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Qu J, Zhang T, Zhang X, Zhang W, Li Y, Gong Q, Yao L, Lui S. MRI radiomics for predicting intracranial progression in non-small-cell lung cancer patients with brain metastases treated with epidermal growth factor receptor tyrosine kinase inhibitors. Clin Radiol 2024; 79:e582-e591. [PMID: 38310058 DOI: 10.1016/j.crad.2024.01.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2023] [Revised: 12/04/2023] [Accepted: 01/03/2024] [Indexed: 02/05/2024]
Abstract
AIM To identify clinical and magnetic resonance imaging (MRI) radiomics predictors specialised for intracranial progression (IP) after first-line epidermal growth factor receptor (EGFR) tyrosine kinase inhibitor (TKI) treatment in non-small-cell lung cancer (NSCLC) patients with brain metastases (BMs). MATERIALS AND METHODS Seventy EGFR-mutated NSCLC patients with a total of 212 BMs who received first-line EGFR-TKI therapy were enrolled. Radiomics features were extracted from the BM regions on the pretreatment contrast-enhanced T1-weighted images, and the radiomics score (rad-score) of each BM was established based on the selected features. Furthermore, the mean rad-score derived from the average rad-score of all included BMs in each patient was calculated. Univariate and multivariate logistic regression analyses were performed to identify potential predictors of IP. Prediction models based on different predictors and their combinations were constructed, and nomogram based on the optimal prediction model was evaluated. RESULTS Thirty-three (47.1 %) patients developed IP, and the remaining 37 (52.9 %) patients were IP-free. EGFR-19del mutation (OR 0.19, 95 % CI 0.05-0.69), third-generation TKI treatment (OR 0.33, 95 % CI 0.16-0.67) and mean rad-score (OR 5.71, 95 % CI 1.65-19.68) were found to be independent predictive factors. Models based on these three predictors alone and in combination (combined model) achieved AUCs of 0.64, 0.64, 0.74, and 0.86 and 0.64, 0.64, 0.75, and 0.84 in the training and validation sets, respectively, and the combined model demonstrated optimal performance for predicting IP. CONCLUSIONS The model integrating EGFR-19del mutation, third-generation TKI treatment and mean rad-score had good predictive value for IP after EGFR-TKI treatment in NSCLC patients with BM.
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Affiliation(s)
- J Qu
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - T Zhang
- Department of Computer Science and Engineering, University of Electronic Science and Technology of China, Chengdu, China
| | - X Zhang
- Pharmaceutical Diagnostic Team, GE Healthcare, Life Sciences, Beijing, China
| | - W Zhang
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - Y Li
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - Q Gong
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China
| | - L Yao
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.
| | - S Lui
- Department of Radiology, and Functional and Molecular Imaging Key Laboratory of Sichuan Province, West China Hospital of Sichuan University, Chengdu, China; Huaxi MR Research Center (HMRRC), West China Hospital of Sichuan University, Chengdu, China; Research Unit of Psychoradiology, Chinese Academy of Medical Sciences, Chengdu, China.
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Li L, Zhang H, Zhang J, Xiao Y, Li Y, Qu J. TEMPORARY REMOVAL: The first investigation of a nosocomial outbreak caused by ST80 vancomycin-resistant Enterococci faecium in China. J Hosp Infect 2023:S0195-6701(23)00356-0. [PMID: 37951417 DOI: 10.1016/j.jhin.2023.10.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 10/30/2023] [Accepted: 10/31/2023] [Indexed: 11/14/2023]
Abstract
The publisher regrets that this article has been temporarily removed. A replacement will appear as soon as possible in which the reason for the removal of the article will be specified, or the article will be reinstated. The full Elsevier Policy on Article Withdrawal can be found at https://www.elsevier.com/about/policies/article-withdrawal.
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Affiliation(s)
- L Li
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - H Zhang
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong 518033, China
| | - J Zhang
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Y Xiao
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China
| | - Y Li
- Department of Clinical Laboratory, Shenzhen Traditional Chinese Medicine Hospital, Shenzhen, Guangdong 518033, China.
| | - J Qu
- Department of Clinical Laboratory, Shenzhen Third People's Hospital, National Clinical Research Centre for Infectious Diseases, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, Guangdong Province, China.
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Li W, Li C, Liu T, Wang Y, Ma X, Xiao X, Zhang Q, Qu J. Self-reported sleep disorders and the risk of all cancer types: evidence from the Kailuan Cohort study. Public Health 2023; 223:209-216. [PMID: 37677850 DOI: 10.1016/j.puhe.2023.08.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 06/18/2023] [Accepted: 08/03/2023] [Indexed: 09/09/2023]
Abstract
OBJECTIVES Previous studies that focussed on sleep disturbance have primarily examined specific aspects of sleep disorders rather than considering overall sleep quality. We aimed to investigate different sleep disorders and their combination as risk factors for different types of cancer. STUDY DESIGN Prospective cohort study. METHODS In this prospective cohort study, we included 78,232 participants. A self-reported questionnaire was used to address insomnia, daytime sleepiness, snoring, and sleep duration. Overall sleep quality was evaluated by summarising these four sleep parameters. Cox proportional hazards analysis was used to estimate the hazard ratios and their 95% confidence intervals for determining the effect of the overall sleep-quality score and its components on the risk of incident cancer. RESULTS During a median follow-up of 5.67 years, 1266 participants were diagnosed with incident cancer. Compared to participants in the best sleep-quality score group, participants in the worst sleep-quality score group had a higher subsequent risk of overall cancer, and colorectal, breast, uterine or uterine cervical, prostatic, kidney, and bladder cancer. Participants with insomnia and snoring status had an elevated risk of head and neck, breast, uterine or uterine cervical, prostatic, kidney, bladder cancer, and lymphoma. CONCLUSIONS Poor overall sleep-quality scores as well as poor scores for the scale's components, including insomnia and snoring status, elevated the risk of overall and several specific-site cancers. TRIAL REGISTRATION Kailuan Study, ChiCTR2000029767. Registered 12 February, 2020-Retrospectively registered, https://www.chictr.org.cn/showprojEN.html?proj=48316.
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Affiliation(s)
- W Li
- Department of General Surgery, Aerospace Centre Hospital, Beijing, 100038, China
| | - C Li
- Department of Oncology, Dazu Hospital of Chongqing Medical University, Chongqing, 402360, China
| | - T Liu
- Department of Gastrointestinal Surgery/Clinical Nutrition, Capital Medical University Affiliated Beijing Shijitan Hospital, Beijing, 100038, China
| | - Y Wang
- Department of Hepatological Surgery, Kailuan General Hospital, Tangshan, 063000, China
| | - X Ma
- Department of Hepatological Surgery, Kailuan General Hospital, Tangshan, 063000, China
| | - X Xiao
- Department of Gynecology, Aerospace Center Hospital, 100038, China.
| | - Q Zhang
- Department of General Surgery, Kailuan General Hospital, Tangshan, 063000, China.
| | - J Qu
- Department of General Surgery, Aerospace Centre Hospital, Beijing, 100038, China.
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Ding X, Cui X, Tseng LT, Wang Y, Qu J, Yue Z, Sang L, Lee WT, Guan X, Bao N, Sathish CI, Yu X, Xi S, Breese MBH, Zheng R, Wang X, Wang L, Wu T, Ding J, Vinu A, Ringer SP, Yi J. Realization of High Magnetization in Artificially Designed Ni/NiO Layers through Exchange Coupling. Small 2023:e2304369. [PMID: 37715070 DOI: 10.1002/smll.202304369] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 08/23/2023] [Indexed: 09/17/2023]
Abstract
High-magnetization materials play crucial roles in various applications. However, the past few decades have witnessed a stagnation in the discovery of new materials with high magnetization. In this work, Ni/NiO nanocomposites are fabricated by depositing Ni and NiO thin layers alternately, followed by annealing at specific temperatures. Both the as-deposited samples and those annealed at 373 K exhibit low magnetization. However, the samples annealed at 473 K exhibit a significantly enhanced saturation magnetization exceeding 607 emu cm-3 at room temperature, surpassing that of pure Ni (480 emu cm-3 ). Material characterizations indicate that the composite comprises NiO nanoclusters of size 1-2 nm embedded in the Ni matrix. This nanoclustered NiO is primarily responsible for the high magnetization, as confirmed by density functional theory calculations. The calculations also indicate that the NiO clusters are ferromagnetically coupled with Ni, resulting in enhanced magnetization. This work demonstrates a new route toward developing artificial high-magnetization materials using the high magnetic moments of nanoclustered antiferromagnetic materials.
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Affiliation(s)
- Xiang Ding
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan, 430063, China
| | - Xiangyuan Cui
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Li-Ting Tseng
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Yiren Wang
- School of Materials Science and Engineering, Central South University, Changsha, 410083, P. R. China
| | - Jiangtao Qu
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Zengji Yue
- Institute of Photonic Chips, University of Shanghai for Science and Technology, Shanghai, 200093, P. R. China
| | - Lina Sang
- School of Integrated Circuit Science and Engineering, Tianjin Key Laboratory of Film Electronic & Communication Devices, Tianjin University of Technology, Tianjin, 300384, P. R. China
| | - Wai Tung Lee
- Science Directorate, European Spallation Source Partikelgatan 2, Lund, 224 84, Sweden
| | - Xinwei Guan
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Nina Bao
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - C I Sathish
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Xiaojiang Yu
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Shibo Xi
- Institute of Chemical and Engineering Science, Agency for Science, Technology and Research (A*STAR), 1 Pesek Road, Jurong Island, Singapore, 627833
| | - Mark B H Breese
- Singapore Synchrotron Light Source, National University of Singapore, Singapore, 119260
| | - Rongkun Zheng
- School of Physics, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Xiaolin Wang
- Institute for Superconducting and Electronic Materials, Australian Institute for Innovative Materials, University of Wollongong, Wollongong, NSW, 2500, Australia
- ARC Centre of Excellence in Future Low-Energy Electronics Technologies (FLEET), University of Wollongong, Wollongong, NSW, 2500, Australia
| | - Lan Wang
- School of Physics, Hefei University of Technology, Hefei, 230009, P. R. China
| | - Tom Wu
- School of Materials Science and Engineering, UNSW, Sydney, NSW, 2052, Australia
| | - Jun Ding
- Department of Materials Science and Engineering, National University of Singapore, Singapore, 1192690
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
| | - Simon P Ringer
- School of Aerospace Mechanical & Mechatronic Engineering and Australian Centre for Microscopy & Microanalysis, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials, School of Engineering, University of Newcastle, Callaghan, NSW, 2308, Australia
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Huang S, Tegg L, Qu J, Yang L, McCarroll I, Burr P, Cairney JM. Nanoscale Distribution of Alloying Elements in Optimized ZIRLO Using the Invizo 6000. Microsc Microanal 2023; 29:614-615. [PMID: 37613046 DOI: 10.1093/micmic/ozad067.298] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/25/2023]
Affiliation(s)
- Siyu Huang
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia
| | - Levi Tegg
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
| | - Limei Yang
- School of Civil and Environmental Engineering, University of Technology Sydney, Sydney, NSW, Australia
| | | | - Patrick Burr
- School of Mechanical Engineering, University of New South Wales, Sydney, Australia
| | - Julie M Cairney
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
- School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, Australia
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Su M, Zhu Y, Liu S, Song L, Qu J, Zhang Y, Zhang Q. Median effective dose (ED 50) of esketamine combined with propofol for children to inhibit response of gastroscope insertion. BMC Anesthesiol 2023; 23:240. [PMID: 37464290 PMCID: PMC10354894 DOI: 10.1186/s12871-023-02204-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Accepted: 07/11/2023] [Indexed: 07/20/2023] Open
Abstract
BACKGROUND Propofol is the most commonly used drug for procedural sedation during gastroscopy. However, independent use of propofol can lead to increased dosage and additional side effects. Esketamine was found to be exceptional in combination with propofol for painless gastroscopy. No studies have calculated the median effective dose (ED50) of esketamine combined with propofol in pediatric painless gastroscopy. Here, we designed a research to study the ED50 of esketamine combined with propofol using the Dixon and Massey up-and-down sequential method for inhibiting the response of gastroscope insertion. METHODS Children who met the inclusion and exclusion criteria were included in this study. Propofol and esketamine were used as anesthetics for painless gastroscopy in children. To explore the ED50, the initial propofol dose was set at 3 mg/kg in all children. The first child was given an esketamine dose of 0.1 mg/kg, followed by 30 s of slow bolus injection propofol. If anesthesia induction failed (coughing or body movement of children during gastroscope insertion), the esketamine dose was elevated in the next child, with a interval difference of 0.05 mg/kg. Otherwise, if the anesthesia induction was successful, the next dosage was reduced by 0.05 mg/kg. The study was stopped if nine crossover inflection points were reached. The ED50 of esketamine was calculated using probit regression, and the blood pressure, pulse oxygen saturation, heart rate, recovery time, and side effects were recorded in all children. RESULTS A total of 26 children were included in this study. The ED50 of esketamine combined with 3 mg/kg propofol was 0.143 mg/kg (95% CI 0.047-0.398 mg/kg). The total consumption of propofol was 16.04 ± 5.37 mg. The recovery time was 16.38 ± 8.70 min. Adverse effects recorded were delayed awakening in two cases and increased oral secretions of another child during the examination inducing cough and hypoxemia (86% was the lowest). DISCUSSION The ED50 of esketamine was 0.143 mg/kg when combined with 3 mg/kg propofol for successful sedation in pediatric gastroscope insertion. This sub-anaesthetic dose of esketamine was safe and efficacious with few complications in pediatric painless gastroscopy. TRIAL REGISTRATION The study was registered at the Chinese Clinical Trial Registry ( www.chictr.org.cn ; registration number: ChiCTR2100052830 on 06/11/2021).
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Affiliation(s)
- Ming Su
- Binzhou Medical University Hospital, Binzhou, China
| | - Yichao Zhu
- Binzhou Medical University Hospital, Binzhou, China
| | - Shupeng Liu
- Binzhou Medical University Hospital, Binzhou, China
| | - Lijuan Song
- Binzhou Medical University Hospital, Binzhou, China
| | - Jiangtao Qu
- Binzhou Medical University Hospital, Binzhou, China
| | - Yong Zhang
- Binzhou Medical University Hospital, Binzhou, China
| | - Quanyi Zhang
- Binzhou Medical University Hospital, Binzhou, China.
- Department of Anesthesiology, Binzhou Medical University Hospital, Huanghe-Str.2, Binzhou, China.
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Patel V, Jose L, Philippot G, Aymonier C, Inerbaev T, McCourt LR, Ruppert MG, Qi D, Li W, Qu J, Zheng R, Cairney J, Yi J, Vinu A, Karakoti AS. Fluoride-assisted detection of glutathione by surface Ce 3+/Ce 4+ engineered nanoceria. J Mater Chem B 2022; 10:9855-9868. [PMID: 36415972 DOI: 10.1039/d2tb01135b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Nanoceria has evolved as a promising nanomaterial due to its unique enzyme-like properties, including excellent oxidase mimetic activity, which significantly increases in the presence of fluoride ions. However, this significant increase in oxidase activity has never been utilised as a signal enhancer for the detection of biological analytes partly because of the lack of understanding of the mechanism involved in this process. In this study, we show that the surface oxidation state of cerium ions plays a very crucial role in different enzymatic activities, especially the oxidase mimetic activity by engineering nanoceria with three different surface Ce4+/Ce3+ compositions. Using DFT calculations combined with Bader charge analysis, it is demonstrated that stoichiometric ceria registers a higher oxidase mimetic activity than oxygen-deficient ceria with a low Ce4+/Ce3+ ratio due to a higher charge transfer from a substrate, 3,3',5,5' tetramethylbenzidine (TMB), to the ceria surface. We also show that the fluoride ions can significantly increase the charge transfer from the TMB surface to ceria irrespective of the surface Ce4+/Ce3+ ratio. Using this knowledge, we first compare the fluoride sensing properties of nanoceria with high Ce4+ and mixed Ce4+/Ce3+ oxidation states and further demonstrate that the linear detection range of fluoride ions can be extended to 1-10 ppm for nanoceria with mixed oxidation states. Then, we also demonstrate an assay for fluoride assisted detection of glutathione, an antioxidant with elevated levels during cancer, using nanoceria with a high surface Ce4+/Ce3+ ratio. The addition of fluoride ions in this assay allows the detection of glutathione in the linear range of 2.5-50 ppm with a limit of detection (LOD) of 3.8 ppm. These studies not only underpin the role of the surface Ce4+/Ce3+ ratio in tuning the fluoride assisted boost in the oxidase mimetic activity of nanoceria but also its strategic application in designing better colourimetric assays.
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Affiliation(s)
- Vaishwik Patel
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Linta Jose
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Gilles Philippot
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Cyril Aymonier
- Univ. Bordeaux, CNRS, Bordeaux INP, ICMCB, UMR 5026, F-33600 Pessac, France
| | - Talgat Inerbaev
- L. N. Gumilyov Eurasian National University, Nur-Sultan 010008, Kazakhstan.,National University of Science and Technology "MISIS", Moscow 119049, Russia
| | - Luke R McCourt
- School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Michael G Ruppert
- School of Engineering, College of Engineering, Science and Environment, The University of Newcastle, Callaghan, 2308, Australia
| | - Dongchen Qi
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Wei Li
- Centre for Materials Science, School of Chemistry and Physics, Queensland University of Technology, Brisbane, QLD 4001, Australia
| | - Jiangtao Qu
- School of Physics, The University of Sydney, NSW, 2000, Australia
| | - Rongkun Zheng
- School of Physics, The University of Sydney, NSW, 2000, Australia
| | - Julie Cairney
- School of Physics, The University of Sydney, NSW, 2000, Australia
| | - Jiabao Yi
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Ajayan Vinu
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
| | - Ajay S Karakoti
- Global Innovative Center for Advanced Nanomaterials (GICAN), School of Engineering College of Engineering, Science and Environment, The University of Newcastle, Callaghan, NSW, 2308, Australia.
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Smits J, Cunha D, Qu J, Latta L, Szentmary N, Seitz B, Roux L, Aberdam D, van Heeringen S, Zhou H. 553 Multi-omics analysis identifies coordination and hierarchy of transcription factors controlling specific epithelial cell fates in corneal epithelium. J Invest Dermatol 2022. [DOI: 10.1016/j.jid.2022.09.569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Qu J, Beznasyuk DV, Cassidy M, Tanta R, Yang L, Holmes NP, Griffith MJ, Krogstrup P, Cairney JM. Atomic-Scale Characterization of Planar Selective-Area-Grown InAs/InGaAs Nanowires. ACS Appl Mater Interfaces 2022; 14:47981-47990. [PMID: 36222623 DOI: 10.1021/acsami.2c09594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Atomic-scale information about the structural and compositional properties of novel semiconductor nanowires is essential to tailoring their properties for specific applications, but characterization at this length scale remains a challenging task. Here, quasi-1D InAs/InGaAs semiconductor nanowire arrays were grown by selective area epitaxy (SAE) using molecular beam epitaxy (MBE), and their subsequent properties were analyzed by a combination of atom probe tomography (APT) and aberration-corrected transmission electron microscopy (TEM). Results revealed the chemical composition of the outermost thin InAs layer, a fine variation in the indium content at the InAs/InGaAs interface, and lightly incorporated element tracing. The results highlight the importance of correlative microscopy approaches in revealing complex nanoscale structures, with TEM being uniquely suited to interrogating the crystallography of InGaAs NWs, whereas APT is capable of three-dimensional (3D) elemental mapping, revealing the subtle compositional variation near the boundary region. This work demonstrates a detailed pathway for the nanoscale structural assessment of novel one-dimensional (1D) nanomaterials.
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Affiliation(s)
| | - Daria V Beznasyuk
- Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | | | - Rawa Tanta
- Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
| | | | | | | | - Peter Krogstrup
- Center for Quantum Devices, Niels Bohr Institute, University of Copenhagen, 2100 Copenhagen, Denmark
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Zhu J, Qu J, Fan Y, Zhang R, Wang X. Curcumin Inhibits Invasion and Epithelial–Mesenchymal Transition in Hepatocellular Carcinoma Cells by Regulating TET1/Wnt/β-catenin Signal Axis. Bull Exp Biol Med 2022; 173:770-774. [DOI: 10.1007/s10517-022-05629-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Indexed: 11/11/2022]
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Ran J, Zhang H, Fu S, Jaroniec M, Shan J, Xia B, Qu Y, Qu J, Chen S, Song L, Cairney JM, Jing L, Qiao SZ. NiPS 3 ultrathin nanosheets as versatile platform advancing highly active photocatalytic H 2 production. Nat Commun 2022; 13:4600. [PMID: 35933410 PMCID: PMC9357043 DOI: 10.1038/s41467-022-32256-6] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 07/20/2022] [Indexed: 11/09/2022] Open
Abstract
High-performance and low-cost photocatalysts play the key role in achieving the large-scale solar hydrogen production. In this work, we report a liquid-exfoliation approach to prepare NiPS3 ultrathin nanosheets as a versatile platform to greatly improve the light-induced hydrogen production on various photocatalysts, including TiO2, CdS, In2ZnS4 and C3N4. The superb visible-light-induced hydrogen production rate (13,600 μmol h-1 g-1) is achieved on NiPS3/CdS hetero-junction with the highest improvement factor (~1,667%) compared with that of pure CdS. This significantly better performance is attributed to the strongly correlated NiPS3/CdS interface assuring efficient electron-hole dissociation/transport, as well as abundant atomic-level edge P/S sites and activated basal S sites on NiPS3 ultrathin nanosheets advancing hydrogen evolution. These findings are revealed by the state-of-art characterizations and theoretical computations. Our work for the first time demonstrates the great potential of metal phosphorous chalcogenide as a general platform to tremendously raise the performance of different photocatalysts.
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Affiliation(s)
- Jingrun Ran
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
| | - Hongping Zhang
- State Key Laboratory of Environmentally Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Science and Engineering, Southwest University of Science and Technology, 621010, Mianyang, Sichuan, China
| | - Sijia Fu
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
| | - Mietek Jaroniec
- Department of Chemistry and Biochemistry & Advanced Materials and Liquid Crystal Institute, Kent State University, Kent, OH 44242, USA
| | - Jieqiong Shan
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
| | - Bingquan Xia
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia
| | - Yang Qu
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, 150080, Harbin, P. R. China
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW 2006, Australia
| | - Shuangming Chen
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, 230029, Hefei, Anhui, P. R. China
| | - Li Song
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, 230029, Hefei, Anhui, P. R. China
| | - Julie M Cairney
- School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, 150080, Harbin, P. R. China
| | - Shi-Zhang Qiao
- School of Chemical Engineering and Advanced Materials, University of Adelaide, Adelaide, SA 5005, Australia.
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12
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Ren W, Tan X, Jia C, Krammer A, Sun Q, Qu J, Smith SC, Schueler A, Hu X, Zhao C. Electronic Regulation of Nickel Single Atoms by Confined Nickel Nanoparticles for Energy-Efficient CO 2 Electroreduction. Angew Chem Int Ed Engl 2022; 61:e202203335. [PMID: 35315559 DOI: 10.1002/anie.202203335] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2022] [Indexed: 01/12/2023]
Abstract
Modulating the electronic structure of atomically dispersed active sites is promising to boost catalytic activity but is challenging to achieve. Here we show a cooperative Ni single-atom-on-nanoparticle catalyst (NiSA/NP) prepared via direct solid-state pyrolysis, where Ni nanoparticles donate electrons to Ni(i)-N-C sites via a network of carbon nanotubes, achieving a high CO current density of 346 mA cm-2 at -0.5 V vs RHE in an alkaline flow cell. When coupled with a NiFe-based anode in a zero-gap membrane electrolyzer, the catalyst delivers an industrially relevant CO current density of 310 mA cm-2 at a low cell voltage of -2.3 V, corresponding to an overall energy efficiency of 57 %. The superior CO2 electroreduction performance is attributed to the enhanced adsorption of key intermediate COOH* on the electron-rich Ni single atoms, as well as a high density of active sites.
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Affiliation(s)
- Wenhao Ren
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia.,Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015, Lausanne, Switzerland
| | - Xin Tan
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - Chen Jia
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Anna Krammer
- Solar Energy and Building Physics Laboratory, Ecole Polytechnique Fédérale de Lausanne, EPFL LESO-PB, 1015, Lausanne, Switzerland
| | - Qian Sun
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, University of Sydney, 2006, NSW, Sydney, Australia
| | - Sean C Smith
- Department of Materials Physics, Research School of Physics, Australian National University, Canberra, ACT 2601, Australia
| | - Andreas Schueler
- Solar Energy and Building Physics Laboratory, Ecole Polytechnique Fédérale de Lausanne, EPFL LESO-PB, 1015, Lausanne, Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne (EPFL), ISIC-LSCI, 1015, Lausanne, Switzerland
| | - Chuan Zhao
- School of Chemistry, University of New South Wales, Sydney, New South Wales 2052, Australia
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13
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Yuan Y, Qu J, Wei L, Zheng R, Lu Y, Liu R, Liu T, Chen J, Luo L, Du G, You B, Zhang W, Zhang C, Zhu L, Hu Y, Xu Q, Du J. Electric Control of Exchange Bias at Room Temperature by Resistive Switching via Electrochemical Metallization. ACS Appl Mater Interfaces 2022; 14:26941-26948. [PMID: 35666293 DOI: 10.1021/acsami.2c05764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Electric field control of exchange bias (EB) plays an important role in spintronics due to its attractive merit of lower energy consumption. Here, we propose a novel method for electrically tunable EB at room temperature in a device with the stack of Si/SiO2/Ta/Pt/Ag/Mn-doped ZnO (MZO)/Pt/FeMn/Co/ITO by resistive switching (RS) via electrochemical metallization (ECM). The device shows enhanced and weakened EB when set at high-resistance state (HRS) and low-resistance state (LRS), respectively. For the device at LRS, the aberration-corrected scanning transmission electron microscopy (STEM) characterizations unambiguously reveal that the Ag filaments grow initially from the Ag anode and then elongate toward the ITO cathode. It is inferred that at LRS, a small portion of Ag filaments have passed through the MZO and the intervening thin Pt layer and extended into the FeMn layer. After applying reverse voltage, these Ag filaments are electrochemically dissolved and ruptured near the MZO/Pt interface. This is considered to be the main mechanism responsible for RS and switchable EB as well. This work presents a new strategy for designing low-power, nonvolatile magnetoelectric random access memory devices.
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Affiliation(s)
- Yuan Yuan
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Jiangtao Qu
- School of Physics and Nano Institute, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Lujun Wei
- New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210046, P. R. China
| | - Rongkun Zheng
- School of Physics and Nano Institute, The University of Sydney, Camperdown, NSW 2006, Australia
| | - Yu Lu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Ruobai Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Tianyu Liu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Jiarui Chen
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Lanchun Luo
- New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210046, P. R. China
| | - Guanxiang Du
- New Energy Technology Engineering Laboratory of Jiangsu Provence & School of Science, Nanjing University of Posts and Telecommunications (NUPT), Nanjing 210046, P. R. China
| | - Biao You
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Wei Zhang
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
| | - Chenyu Zhang
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Lin Zhu
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Yong Hu
- College of Sciences, Northeastern University, Shenyang 110819, P. R. China
| | - Qingyu Xu
- School of Physics, Southeast University, Nanjing 211189, P. R. China
| | - Jun Du
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, P. R. China
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14
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Sathish CI, Kothandam G, Selvarajan P, Lei Z, Lee J, Qu J, Al‐Muhtaseb AH, Yu X, Breese MBH, Zheng R, Yi J, Vinu A. Ordered Mesoporous Boron Carbon Nitrides with Tunable Mesopore Nanoarchitectonics for Energy Storage and CO 2 Adsorption Properties. Adv Sci (Weinh) 2022; 9:e2105603. [PMID: 35384377 PMCID: PMC9165510 DOI: 10.1002/advs.202105603] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 12/30/2021] [Indexed: 05/10/2023]
Abstract
Porous boron carbon nitride (BCN) is one of the exciting systems with unique electrochemical and adsorption properties. However, the synthesis of low-cost and porous BCN with tunable porosity is challenging, limiting its full potential in a variety of applications. Herein, the preparation of well-defined mesoporous boron carbon nitride (MBCN) with high specific surface area, tunable pores, and nitrogen contents is demonstrated through a simple integration of chemical polymerization of readily available sucrose and borane ammonia complex (BAC) through the nano-hard-templating approach. The bimodal pores are introduced in MBCN by controlling the self-organization of BAC and sucrose molecules within the nanochannels of the template. It is found that the optimized sample shows a high specific capacitance (296 F g-1 at 0.5 A g-1 ), large specific capacity for sodium-ion battery (349 mAg h-1 at 50 mAh g-1 ), and excellent CO2 adsorption capacity (27.14 mmol g-1 at 30 bar). Density functional theory calculations demonstrate that different adsorption sites (BC, BN, CN, and CC) and the large specific surface area strongly support the high adsorption capacity. This finding offers an innovative breakthrough in the design and development of MBCN nanostructures for energy storage and carbon capture applications.
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Affiliation(s)
- CI Sathish
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Gopalakrishnan Kothandam
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Premkumar Selvarajan
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Zhihao Lei
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Jangmee Lee
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Jiangtao Qu
- School of PhysicsThe University of SydneySydneyNew South Wales2006Australia
| | - Ala'a H. Al‐Muhtaseb
- Department of Petroleum and Chemical EngineeringCollege of EngineeringSultan Qaboos UniversityMuscat33Oman
| | - Xiaojiang Yu
- Singapore Synchrotron Light SourceNational University of SingaporeSingapore117603Singapore
| | - Mark B. H. Breese
- Singapore Synchrotron Light SourceNational University of SingaporeSingapore117603Singapore
- Department of PhysicsNational University of SingaporeSingapore117542Singapore
| | - Rongkun Zheng
- School of PhysicsThe University of SydneySydneyNew South Wales2006Australia
| | - Jiabao Yi
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
| | - Ajayan Vinu
- Global Innovative Centre for Advanced Nanomaterials (GICAN)College of EngineeringScience and EnvironmentThe University of NewcastleCallaghanNSW2308Australia
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15
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Ren W, Tan X, Jia C, Krammer A, Sun Q, Qu J, Smith SC, Schueler A, Hu X, Zhao C. Electronic Regulation of Nickel Single Atoms by Confined Nickel Nanoparticles for Energy‐Efficient CO
2
Electroreduction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202203335] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Wenhao Ren
- School of Chemistry University of New South Wales Sydney New South Wales 2052 Australia
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne (EPFL) ISIC-LSCI 1015 Lausanne Switzerland
| | - Xin Tan
- Department of Materials Physics Research School of Physics Australian National University Canberra ACT 2601 Australia
| | - Chen Jia
- School of Chemistry University of New South Wales Sydney New South Wales 2052 Australia
| | - Anna Krammer
- Solar Energy and Building Physics Laboratory Ecole Polytechnique Fédérale de Lausanne EPFL LESO-PB 1015 Lausanne Switzerland
| | - Qian Sun
- School of Chemistry University of New South Wales Sydney New South Wales 2052 Australia
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis University of Sydney 2006 NSW Sydney Australia
| | - Sean C. Smith
- Department of Materials Physics Research School of Physics Australian National University Canberra ACT 2601 Australia
| | - Andreas Schueler
- Solar Energy and Building Physics Laboratory Ecole Polytechnique Fédérale de Lausanne EPFL LESO-PB 1015 Lausanne Switzerland
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis Institute of Chemical Sciences and Engineering Ecole Polytechnique Fédérale de Lausanne (EPFL) ISIC-LSCI 1015 Lausanne Switzerland
| | - Chuan Zhao
- School of Chemistry University of New South Wales Sydney New South Wales 2052 Australia
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16
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Li YX, Li G, Qu J, Ren X, Zheng L. Finger touching combined X-ray-guided percutaneous nephrolithotomy in 640 cases: an 8-years' experience. Eur Rev Med Pharmacol Sci 2022; 26:2867-2874. [PMID: 35503631 DOI: 10.26355/eurrev_202204_28617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE We aimed to evaluate the safety and efficacy of finger touching combined X-ray-guided percutaneous nephrolithotomy, and the feasibility of avoiding damage in medical staff caused by X-ray. PATIENTS AND METHODS From January 2013 to December 2020, 640 cases of percutaneous nephrolithotomy were performed through the 18-24-F channel. Among those cases, 22 (3.4%) cases were double-sided kidney stones surgeries, 294 (45.8%) cases were on the right side and 324 (50.5%) cases were on the left side. The targeted renal calyceal puncture was carried out under the combined guidance of the doctor's finger and X-ray. We assessed the X-ray exposure time of patients and doctors, average number of punctures, postoperative hospitalization, calculus removal rates, and complications. RESULTS The average number of punctures was 2.8 ± 1.4. Average X-ray exposure time during procedure: 2.8 s (range: 2-8 s). Average surgical time: 106.5 ± 49.4 min. Postoperative hospitalization: 6.8 ± 4.2 d. Average reduced hemoglobin level: 5.9 g/day. Stone-free rate 4 weeks after surgeries: 95.6%. Patients with upper ureteral calculi: 395 cases (61.72%). The calculus residual rate of patients with staghorn renal calculi or multiple renal calculi complementary treatments was 82.9%, including 0 patients who received shock wave lithotripsy, 2 cases of repeated percutaneous nephrolithotomy (PCNL), and 18 cases of ureteroscopy. Postoperative placement of renal drainage tube occurred in 52 cases. As for complications, no perirenal infection occurred, two severe bleeding complication cases occurred, and one case of colon perforation occurred. CONCLUSIONS Finger touching combined X-ray-guided percutaneous nephrolithotomy in patients with renal calculus is safe and can accurately guide the puncture without radiation hazards. The placement of a renal drainage tube was beneficial to reduce renal effusion, hematocele, and infections.
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Affiliation(s)
- Y-X Li
- Department of Urology, Institute of Tongji Medical College of Huazhong University of Science and Technology, Wuhan, China.
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17
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Qu J, Yang W, Wu T, Ren W, Huang J, Yu H, Zhao C, Griffith MJ, Zheng R, Ringer SP, Cairney JM. Atom probe specimen preparation methods for nanoparticles. Ultramicroscopy 2022; 233:113420. [PMID: 34775241 DOI: 10.1016/j.ultramic.2021.113420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Revised: 10/26/2021] [Accepted: 10/31/2021] [Indexed: 11/17/2022]
Abstract
Revealing the position of materials with chemical selectivity at atomic scale within functional nanoparticles is essential to understand and control their performance and cutting-edge atom probe tomography is a powerful tool to undertake this task. In this paper, we demonstrate three effective methods to prepare the needle-shaped specimens required for atom probe tomography measurements from nanoparticles of different sizes and provide examples of how atom probe can be used to provide data that is critical to their functionality. Samples measured include lithium-ion batteries (LIBs) cathode nanoparticles (300 - 500 nm), nickel-doped silicon dioxide (Ni@SiO2) catalytic nanoparticles (100 - 200 nm) and tin-doped copper (Sn@Cu) catalytic nanoparticles (<100 nm). The methods presented can be used to address the ongoing challenge of specimen preparation from particle samples for atom probe measurement, and they provide high quality data. These methods will broaden the application of atom probe tomography and will provide alternative option for researchers to assess the performance/structure of their functional nanomaterials.
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Affiliation(s)
- Jiangtao Qu
- Australian Centre for Microscopy & Microanalysis
| | - Wenjie Yang
- School of Chemical and Biomolecular Engineering
| | - Tianhao Wu
- Key Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100124 China
| | - Wenhao Ren
- School of Chemistry, University of New South Wales, 2052 NSW, Australia
| | - Jun Huang
- School of Chemical and Biomolecular Engineering
| | - Haijun Yu
- Key Laboratory of Advanced Functional Materials, Beijing University of Technology, Beijing 100124 China
| | - Chuan Zhao
- School of Chemistry, University of New South Wales, 2052 NSW, Australia
| | | | - Rongkun Zheng
- Australian Centre for Microscopy & Microanalysis; the School of Physics
| | - Simon P Ringer
- Australian Centre for Microscopy & Microanalysis; School of Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney, 2006, Australia
| | - Julie M Cairney
- Australian Centre for Microscopy & Microanalysis; School of Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney, 2006, Australia.
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18
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Hao Y, Sun S, Du X, Qu J, Li L, Yu X, Zhang X, Yang X, Zheng R, Cairney JM, Lu Z. Boosting Oxygen Reduction Activity of Manganese Oxide Through Strain Effect Caused By Ion Insertion. Small 2022; 18:e2105201. [PMID: 34837322 DOI: 10.1002/smll.202105201] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2021] [Revised: 09/30/2021] [Indexed: 06/13/2023]
Abstract
Transition-metal oxides with a strain effect have attracted immense interest as cathode materials for fuel cells. However, owing to the introduction of heterostructures, substrates, or a large number of defects during the synthesis of strain-bearing catalysts, not only is the structure-activity relationship complicated but also their performance is mediocre. In this study, a mode of strain introduction is reported. Transition-metal ions with different electronegativities are intercalated into the cryptomelane-type manganese oxide octahedral molecular sieves (OMS-2) structure with K ions as the template, resulting in the octahedral structural distortion of MnO6 and producing strains of different degrees. Experimental studies reveal that Ni-OMS-2 with a high compressive strain (4.12%) exhibits superior oxygen reduction performance with a half-wave potential (0.825 V vs RHE) greater than those of other reported manganese-based oxides. This result is related to the increase in the covalence of MnO6 octahedral configuration and shifting down of the eg band center caused by the higher compression strain. This research avoids the introduction of new chemical bonds in the main structure, weakens the effect of eg electron filling number, and emphasizes the pure strain effect. This concept can be extended to other transition-metal-oxide catalysts.
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Affiliation(s)
- Yixin Hao
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Shuo Sun
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Xihua Du
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Lanlan Li
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Xiaofei Yu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Xinghua Zhang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Xiaojing Yang
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
| | - Rongkun Zheng
- The School of Physics, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Julie M Cairney
- Australian Centre for Microscopy and Microanalysis, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Zunming Lu
- School of Materials Science and Engineering, Hebei University of Technology, Tianjin, 300130, P. R. China
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19
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Yang T, Jin C, Qu J, Darvish AA, Sabatini R, Zhang X, Chen H, Ringer SP, Lakhwani G, Li F, Cairney J, Liu X, Zheng R. Solution Epitaxy of Halide Perovskite Thin Single Crystals for Stable Transistors. ACS Appl Mater Interfaces 2021; 13:37840-37848. [PMID: 34314169 DOI: 10.1021/acsami.1c08800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Halide perovskites hold promise for energy and optoelectronic applications due to their fascinating photophysical properties and facile processing. Among various forms, epitaxial thin single crystals (TSCs) are highly desirable due to their high crystallinity, reduced defects, and easy epitaxial integration with other materials. However, a cost-effective method for obtaining TSCs with perfect epitaxial features remains elusive. Here, we demonstrate a direct epitaxial growth of high-quality all-inorganic perovskite CsPbBr3 TSCs on various substrates through a facile solution process under near-ambient conditions. Structural characterizations reveal a high-quality epitaxy between the obtained perovskite TSCs and substrates, thus leading to efficiently reduced defects. The resultant TSCs display a low trap density (∼1011 cm-3) and a long carrier lifetime (∼10.16 ns). Top-gate/top-contact transistors based on these TSCs exhibit high on/off ratios of over 105, an optimal hole mobility of 3.9 cm2 V-1 s-1, almost hysteresis-free operation, and high stability at room temperature. Such a facile approach for the high-yield production of perovskite epitaxial TSCs will enable a broad range of high-performance electronic applications.
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Affiliation(s)
- Tiebin Yang
- School of Physics, Australian Centre for Microscopy and Microanalysis, Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Chao Jin
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Processing Technology, School of Science, Tianjin University, Tianjin 300350, China
| | - Jiangtao Qu
- School of Aerospace, Mechanical and Mechatronic Engineering, Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Amir Asadpoor Darvish
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Randy Sabatini
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Xingmo Zhang
- School of Physics, Australian Centre for Microscopy and Microanalysis, Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Hansheng Chen
- School of Aerospace, Mechanical and Mechatronic Engineering, Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Simon P Ringer
- School of Aerospace, Mechanical and Mechatronic Engineering, Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Girish Lakhwani
- ARC Centre of Excellence in Exciton Science, School of Chemistry, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Feng Li
- School of Physics, Australian Centre for Microscopy and Microanalysis, Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Julie Cairney
- School of Aerospace, Mechanical and Mechatronic Engineering, Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Xiaogang Liu
- Department of Chemistry, National University of Singapore, Singapore 117543, Singapore
| | - Rongkun Zheng
- School of Physics, Australian Centre for Microscopy and Microanalysis, Sydney Nano Institute, The University of Sydney, Sydney, New South Wales 2006, Australia
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20
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Ran J, Zhang H, Qu J, Shan J, Davey K, Cairney JM, Jing L, Qiao SZ. Significantly Raised Visible-Light Photocatalytic H 2 Evolution on a 2D/2D ReS 2 /In 2 ZnS 4 van der Waals Heterostructure. Small 2021; 17:e2100296. [PMID: 34270858 DOI: 10.1002/smll.202100296] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 06/03/2021] [Indexed: 06/13/2023]
Abstract
Owing to dwindling fossil fuels reserves, the development of alternative renewable energy sources is globally important. Photocatalytic hydrogen (H2 ) evolution represents a practical and affordable alternative to convert sunlight into carbon-free H2 fuel. Recently, 2D/2D van der Waals heterostructures (vdWHs) have attracted significant research attention for photocatalysis. Here, for the first time a ReS2 /In2 ZnS4 2D/2D vdWH synthesized via a facile physical mixing is reported. It exhibits a highly promoted photocatalytic H2 -evolution rate of 2515 µmol h-1 g-1 . Importantly, this exceeds that for pristine In2 ZnS4 by about 22.66 times. This, therefore, makes ReS2 /In2 ZnS4 one of the most efficient In2 ZnS4 -based photocatalysts without noble-metal cocatalysts. Advanced characterizations and theoretical computations results show that interlayer electronic interaction within ReS2 /In2 ZnS4 vdWH and atomic-level S active centers along the edges of ReS2 NSs work collaboratively to result in the boosted light-induced H2 evolution. Results will be of immediate benefit in the rational design and preparation of vdWHs for applications in catalysis/(opto)electronics.
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Affiliation(s)
- Jingrun Ran
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Hongping Zhang
- State Key Laboratory of Environmental Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Science and Engineering, Southwest University of Science and Technology, Mianyang, Sichuan, 621010, China
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, University of Sydney, Sydney, NSW, 2006, Australia
| | - Jieqiong Shan
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Kenneth Davey
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
| | - Julie M Cairney
- School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW, 2006, Australia
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Material Chemistry (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Shi-Zhang Qiao
- School of Chemical Engineering and Advanced Materials, The University of Adelaide, Adelaide, SA, 5005, Australia
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21
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Leverett J, Daiyan R, Gong L, Iputera K, Tong Z, Qu J, Ma Z, Zhang Q, Cheong S, Cairney J, Liu RS, Lu X, Xia Z, Dai L, Amal R. Designing Undercoordinated Ni-N x and Fe-N x on Holey Graphene for Electrochemical CO 2 Conversion to Syngas. ACS Nano 2021; 15:12006-12018. [PMID: 34192868 DOI: 10.1021/acsnano.1c03293] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
In this study, we propose a top-down approach for the controlled preparation of undercoordinated Ni-Nx (Ni-hG) and Fe-Nx (Fe-hG) catalysts within a holey graphene framework, for the electrochemical CO2 reduction reaction (CO2RR) to synthesis gas (syngas). Through the heat treatment of commercial-grade nitrogen-doped graphene, we prepared a defective holey graphene, which was then used as a platform to incorporate undercoordinated single atoms via carbon defect restoration, confirmed by a range of characterization techniques. We reveal that these Ni-hG and Fe-hG catalysts can be combined in any proportion to produce a desired syngas ratio (1-10) across a wide potential range (-0.6 to -1.1 V vs RHE), required commercially for the Fischer-Tropsch (F-T) synthesis of liquid fuels and chemicals. These findings are in agreement with our density functional theory calculations, which reveal that CO selectivity increases with a reduction in N coordination with Ni, while unsaturated Fe-Nx sites favor the hydrogen evolution reaction (HER). The potential of these catalysts for scale up is further demonstrated by the unchanged selectivity at elevated temperature and stability in a high-throughput gas diffusion electrolyzer, displaying a high-mass-normalized activity of 275 mA mg-1 at a cell voltage of 2.5 V. Our results provide valuable insights into the implementation of a simple top-down approach for fabricating active undercoordinated single atom catalysts for decarbonized syngas generation.
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Affiliation(s)
- Josh Leverett
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Rahman Daiyan
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Lele Gong
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Kevin Iputera
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Zizheng Tong
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Zhipeng Ma
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Qingran Zhang
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Soshan Cheong
- Electron Microscope Unit, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Julie Cairney
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, New South Wales 2006, Australia
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
| | - Xunyu Lu
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Zhenhai Xia
- Department of Materials Science and Engineering, University of North Texas, Denton, Texas 76203, United States
| | - Liming Dai
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
| | - Rose Amal
- School of Chemical Engineering, UNSW Sydney, Sydney, NSW 2052, Australia
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Azimi Z, Gagrani N, Qu J, Lem OLC, Mokkapati S, Cairney JM, Zheng R, Tan HH, Jagadish C, Wong-Leung J. Understanding the role of facets and twin defects in the optical performance of GaAs nanowires for laser applications. Nanoscale Horiz 2021; 6:559-567. [PMID: 33999985 DOI: 10.1039/d1nh00079a] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
GaAs nanowires are regarded as promising building blocks of future optoelectronic devices. Despite progress, the growth of high optical quality GaAs nanowires is a standing challenge. Understanding the role of twin defects and nanowire facets on the optical emission and minority carrier lifetime of GaAs nanowires is key for the engineering of their optoelectronic properties. Here, we present new insights into the microstructural parameters controlling the optical properties of GaAs nanowires, grown via selective-area metal-organic vapor-phase epitaxy. We observe that these GaAs nanowires have a twinned zinc blende crystal structure with taper-free {110} side facets that result in an ultra-low surface recombination velocity of 3.5 × 104 cm s-1. This is an order of magnitude lower than that reported for defect-free GaAs nanowires grown by the vapor-liquid-solid technique. Using time-resolved photoluminescence and cathodoluminescence measurements, we untangle the local correlation between structural and optical properties demonstrating the superior role of the side facets in determining recombination rates over that played by twin defects. The low surface recombination velocity of these taper-free {110} side facets enable us to demonstrate, for the first time, low-temperature lasing from bare (unpassivated) GaAs nanowires, and also efficient room-temperature lasing after passivation with an AlGaAs shell.
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Affiliation(s)
- Zahra Azimi
- Department of Electronic Materials Engineering, Research School of Physics, The Australian National University, Canberra, Australia.
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Eder K, Bhatia V, Qu J, Van Leer B, Dutka M, Cairney JM. A multi-ion plasma FIB study: Determining ion implantation depths of Xe, N, O and Ar in tungsten via atom probe tomography. Ultramicroscopy 2021; 228:113334. [PMID: 34102569 DOI: 10.1016/j.ultramic.2021.113334] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2021] [Revised: 05/18/2021] [Accepted: 05/27/2021] [Indexed: 10/21/2022]
Abstract
In this study atom probe tomography was used to determine the implantation depth of four different plasma FIB ion species - xenon, argon, nitrogen, and oxygen - implanted at different acceleration voltages. It was found that lowering the beam energy reduces the implantation depth, but significant implantation was still observed for N, O and Ar at beam energies as low as 2 kV. Furthermore, nitrides and oxides were observed that were formed when using N and O. Xe had the lowest implantation depth compared to Ar, N and O when using the same conditions. No Xe ions were detected in the sample prepared at 2 kV. Experimentally-determined implantation depths were compared to calculated implantation depths. The experiments exhibited deeper-than-predicted ion implantation into the microstructure, but lower-than-predicted ion concentrations.
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Affiliation(s)
- Katja Eder
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney Australia; School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney Australia.
| | - Vijay Bhatia
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney Australia
| | - Jiangtao Qu
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney Australia; School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney Australia
| | - Brandon Van Leer
- Thermo Fisher Scientific, 5350 NE Dawson Creek Drive, Hillsboro OR USA
| | | | - Julie M Cairney
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney Australia; School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney Australia
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You H, Li M, Zhao JL, Wu L, Duan X, Luo H, Zhao C, Zhan F, Wu Z, Li H, Yang M, Xu J, Wei W, Wang Y, Shi J, Qu J, Wang Q, Leng X, Tian X, Zhao Y, Zeng X. POS0754 DEVELOPMENT OF A RISK PREDICTION MODEL FOR VENOUS THROMBOEMBOLISM IN PATIENTS WITH SYSTEMIC LUPUS ERYTHEMATOSUS: THE SLE-VTE SCORE. Ann Rheum Dis 2021. [DOI: 10.1136/annrheumdis-2021-eular.2769] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Patients with systemic lupus erythematosus (SLE) have a substantially increased risk of venous thromboembolism (VTE). An individual VTE risk assessment is important to ensure that all patients are assessed and given adequate thromboprophylaxis.Objectives:We conducted this study to develop a risk score for VTE in patients with SLE.Methods:Patients with SLE who participated in the Chinese SLE Treatment and Research group were enrolled in this study. Patient baseline information and clinical laboratory indicators were obtained, and VTE events were recorded every 3-6 months during follow-up visits. The risk prediction model was created and internally validated using the bootstrap methods, and a scoring system was established (Figure 1).Figure 1.Flow chart of study design.Results:Out of 4,502 patients included in this study, 135 had a VTE event. After univariate analysis and Lasso regression, the following 11 variables were identified and included in the risk prediction model: male sex, age, BMI ≥25 kg/m2, hyperlipidemia, hypoalbuminemia, hsCRP>3 mg/L, renal involvement, nervous system involvement, anti-β2-glycoprotein I antibody positivity, lupus anticoagulant positivity, and no use of hydroxychloroquine. The AUC for the SLE-VTE score (Table 1) was 0.947 (95% CI, 0.9249-0.9694). The SLE-VTE score’s sensitivity and specificity with the optimal cutoff value of 13 were 0.919 and 0.881, respectively. The SLE-VTE score was superior to the GAPSS system in predicting the risk of VTE in patients with SLE (AUC= 0.947 vs. 0.680, P< 0.001; integrated discrimination improvement (IDI)= 0.6652, P< 0.001; net reclassification improvement (NRI)= 0.6652, P< 0.001).Table 1.Final multivariable analysis for venous thromboembolism risk in patients with SLE β coefficientsOdds ratio* (95% CI)P-valuePoints in scoring systemMale0.6211.86(0.953-3.503)0.0612Age at study entry(≥50)0.8372.308(1.339-3.915)0.0023BMI02(kg/m20.7922.209(1.333-3.627)0.0023Hyperlipemia0.8382.313(1.246-4.166)0.0063Hypoalbuminemia2.1638.697(5.185-14.794)< 0.0017hsCRP>3 mg/L1.4524.272(2.618-6.968)< 0.0015Anti β2GPI1.0132.754(1.543-4.853)0.0013LA1.5594.752(2.799-8.072)< 0.0015Nervous system2.38210.832(6.163-18.998)< 0.0018Lupus nephritis0.8352.305(1.414-3.756)0.0013No use of hydroxychloroquine1.7715.876(3.722-9.401)< 0.0016BMI: body mass index; hsCRP: Hypersensitive c-reactive protein; ACL: anticardiolipin, antiβ2GPI: anti-β2-glycoprotein I, LA: lupus anticoagulantm;Values in bold are statistically significant at p <0.05.Conclusion:Various factors are related to the occurrence of VTE in patients with SLE. The proposed SLE-VTE risk score can accurately predict the risk of VTE and help identify SLE patients with a high risk of VTE who may benefit from thromboprophylaxis.References:[1]Ramirez GA, Efthymiou M, Isenberg DA, Cohen H. Under crossfire: thromboembolic risk in systemic lupus erythematosus. Rheumatology. 2018;58:940-952.[2]Chung WS, Lin CL, Chang SN, Lu CC, Kao CH. Systemic lupus erythematosus increases the risks of deep vein thrombosis and pulmonary embolism: a nationwide cohort study. J Thromb Haemost. 2014;12:452-458.[3]Liew NC, Alemany GV, Angchaisuksiri P, et al. Asian venous thromboembolism guidelines: updated recommendations for the prevention of venous thromboembolism. Int Angiol. 2017;36:1.[4]Savino S, Giovanni S, Veronica M, Dario R, Khamashta MA, Laura BM. GAPSS: the Global Anti-Phospholipid Syndrome Score. Rheumatology. 2013:8.[5]Konstantinides SV, Meyer G, Becattini C, et al. 2019 ESC Guidelines for the diagnosis and management of acute pulmonary embolism developed in collaboration with the European Respiratory Society (ERS). Eur Heart J. 2020;41:543-603.[6]Moghadamyeghaneh Z, Hanna MH, Carmichael JC, Nguyen NT, Stamos MJ. A Nationwide Analysis of Postoperative Deep Vein Thrombosis and Pulmonary Embolism in Colon and Rectal Surgery. J Gastrointest Surg. 2014;18:2169-2177.Disclosure of Interests:None declared
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Song D, Jiang JH, Chen YZ, Zhou WH, Zhang SD, Ye C, Liang YB, Qu J. [Quality of life of patients with primary open-angle glaucoma based on EQ-5D in Wenzhou]. Zhonghua Yan Ke Za Zhi 2021; 57:207-214. [PMID: 33721960 DOI: 10.3760/cma.j.cn112142-20201020-00693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the quality of life of patients with primary open-angle glaucoma (POAG) and its related factors in Wenzhou. Methods: Cross-sectional analysis. A total of 339 POAG patients diagnosed in the Wenzhou glaucoma progression study conducted in the Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University from March 2014 to October 2019 were included. Quality of life of POAG patients was assessed by EQ-5D including the visual analogue scale (VAS). The effects of gender, age, visual field loss (VFL), family history of glaucoma, hypertension, diabetes, migraine, sleep quality, and amateur exercise on the quality of life were analyzed. The utility value (UV) and VAS score were expressed as the median (P25, P75), and Mann-Whitney U was used for the comparison between two groups. Kruskal-Wallis H was performed to compare the differences among multiple groups. Results: A total of 339 POAG patients were included in the study; 164 were males (48.4%), and 175 were females (51.6%). The mean age was (63±10) years. Thirty-four patients (10.0%) had received medication (including one with combined surgical treatment), while the remaining 305 patients (90.0%) had received no anti-glaucoma treatment. Among the patients, 10.5% (32/305) had no VFL, 68.9% (210/305) had mild VFL, 17.0% (52/305) had moderate VFL, and 3.6% (11/305) had severe VFL. In all patients, the median of UV was 1.000 (1.000, 1.000), the mean of UV was 0.964, and the median of VAS score was 80 (75, 90), the mean of VAS score was 81.58. Anxiety or depression and pain or discomfort occurred in 45.7% (43/94) and 34.1% (32/94), respectively, of POAG patients with decreased UVs, as well as mobility constraints in 13.8 % (13/94) and usual activity constraints in 6.4% (6/94). The median of UV of the eye with a better visual field in the group without VFL or with mild or moderate VFL was 1.000 (1.000, 1.000), and in the group with severe VFL was 1.000 (0.862, 1.000), but there was no significant difference in the UV and the VAS score of the eye with a better visual field among groups with different degrees of VFL (both P>0.05). There was statistically significant difference in the UV among groups with different sleep qualities (H=17.465; P<0.01). Using pairwise comparison, the median of UV of the very good sleep group was 1.000 (1.000, 1.000), significantly different to the slightly poor sleep group 1.000 (0.866, 1.000) (z=3.613; P<0.05). The median of UV in patients with migraine was 1.000 (0.875, 1.000), without migraine 1.000 (1.000, 1.000), and in patients with hypertension was 1.000 (0.875, 1.000), without hypertension 1.000 (1.000, 1.000), and in patients with diabetes was 1.000 (0.875, 1.000), without diabetes was 1.000 (1.000, 1.000), the difference was statistically significant (Z=-2.189, -3.864, -2.417; all P<0.05). The UV was not related to age, gender, family history of glaucoma, amateur exercise, alcohol and tobacco, and history of anti-glaucoma medication (all P>0.05). Conclusions: VFL is related to the UV of POAG patients in Wenzhou. Quality of life in mild POAG patients is good but decrease in advanced POAG patients. Sleep quality, systemic complications and physical or psychological discomfort impact on quality of life in POAG patients. (Chin J Ophthalmol, 2021, 57: 207-214).
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Affiliation(s)
- D Song
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J H Jiang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Y Z Chen
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - W H Zhou
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - S D Zhang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - C Ye
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - Y B Liang
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
| | - J Qu
- The Eye Hospital, School of Ophthalmology and Optometry, Wenzhou Medical University, Wenzhou 325027, China
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Ren W, Tan X, Qu J, Li S, Li J, Liu X, Ringer SP, Cairney JM, Wang K, Smith SC, Zhao C. Isolated copper-tin atomic interfaces tuning electrocatalytic CO 2 conversion. Nat Commun 2021; 12:1449. [PMID: 33664236 PMCID: PMC7933149 DOI: 10.1038/s41467-021-21750-y] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 02/10/2021] [Indexed: 02/06/2023] Open
Abstract
Direct experimental observations of the interface structure can provide vital insights into heterogeneous catalysis. Examples of interface design based on single atom and surface science are, however, extremely rare. Here, we report Cu-Sn single-atom surface alloys, where isolated Sn sites with high surface densities (up to 8%) are anchored on the Cu host, for efficient electrocatalytic CO2 reduction. The unique geometric and electronic structure of the Cu-Sn surface alloys (Cu97Sn3 and Cu99Sn1) enables distinct catalytic selectivity from pure Cu100 and Cu70Sn30 bulk alloy. The Cu97Sn3 catalyst achieves a CO Faradaic efficiency of 98% at a tiny overpotential of 30 mV in an alkaline flow cell, where a high CO current density of 100 mA cm-2 is obtained at an overpotential of 340 mV. Density functional theory simulation reveals that it is not only the elemental composition that dictates the electrocatalytic reactivity of Cu-Sn alloys; the local coordination environment of atomically dispersed, isolated Cu-Sn bonding plays the most critical role.
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Affiliation(s)
- Wenhao Ren
- School of Chemistry, University of New South Wales, Sydney, NSW, Australia
| | - Xin Tan
- Integrated Materials Design Laboratory, Department of Applied Mathematics, Research School of Physics, The Australian National University Canberra, Canberra, ACT, Australia
| | - Jiangtao Qu
- Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, Australia
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
| | - Sesi Li
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Jiantao Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, China
| | - Xin Liu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Simon P Ringer
- Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, Australia
| | - Julie M Cairney
- Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW, Australia
- Australian Centre for Microscopy and Microanalysis, The University of Sydney, Sydney, NSW, Australia
| | - Kaixue Wang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, China
| | - Sean C Smith
- Integrated Materials Design Laboratory, Department of Applied Mathematics, Research School of Physics, The Australian National University Canberra, Canberra, ACT, Australia
| | - Chuan Zhao
- School of Chemistry, University of New South Wales, Sydney, NSW, Australia.
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Huang ZX, Qu J, Zhou YK, Li YX, Huo MR, Li C, Huang Q, Zhou B, Li YC. [The efficacy of hemostatic powder for chronic rhinosinusitis in endoscopic sinus surgery: a prospective, randomised, controlled and single blinded clinical trial]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:144-149. [PMID: 33548944 DOI: 10.3760/cma.j.cn115330-20200814-00673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To study the efficacy and patient comfort of absorbable hemostatic powder after endoscopic sinus surgery (ESS). Methods: A total of 21 (17 males, 4 females) patients with an average age of 42(ranging from 18 to 65) underwent bilateral ESS for chronic rhinosinusitis(CRS) in Beijing Tongren Hospital, Capital Medical University between October 2015 and July 2019 were enrolled to compare the effect of absorbable hemostasis powder with Nasopore using an intrapatient control design. A randomized controlled trial was conducted in the left and right nasal cavities of the same patient. If hemostatic powder was applied in the experiment nasal cavity, the Nasopore was applied in the control nasal cavity. The mean preoperative sinus computed tomography (CT) score was 6.25. All patients competed for symptom diaries using a visual analog scale (VAS, score out of 10) at baseline, through 1, 7, 14 and 30 days. Outcomes including bleeding, facial pain, nasal obstruction, nasal discharges using VAS were recorded separately for both sides. Postoperative endoscopic scores were also investigated. SPSS 22 and Graphpad prism 8.0 statistical softwares were used for the analysis. Paired t-test or nonparametric test was used between the test side and the control side. The difference was statistically significant (P<0.05). Results: The bleeding score and total nasal symptom VAS scores at postoperative days (POD) 1, 7, 14 and 30 were not significantly different(t=1.341, 0.552, 0.631, 0.158, all P>0.05;t=0.944, 1.471, 1.612, 2.251, all P>0.05). There was no significant difference between absorbable hemostasis powder and Nasopore side on POD 1, 7, 14 and 30 in terms of each nasal symptom VAS scores(all P>0.05). On POD 1, 7 and 14, the packing material degeneration scores of the absorbable hemostasis powder side were significantly lower than those of the Nasopore side [(1.33±0.21)vs(2.00±0.00),(0.38±0.18) vs (1.95±0.22), 0 vs (1.80±0.13), all P<0.01]. There were significant differences between absorbable hemostasis powder and Nasopore side on POD 1, 7, 14 and 30 in terms of endoscopic scores (edema, crusting, discharges, scar, polyps and material degeneration, t=3.07, 7.00, 6.41, 2.69, all P<0.05). Conclusions: The absorbable hemostasis powder and Nasopore has similar postoperative hemostasis effect. The absorbable hemostasis powder is rapidly cleared and without negative effects on mucosal wound healing 14 days postoperatively.
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Affiliation(s)
- Z X Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - J Qu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y K Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y X Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - M R Huo
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Q Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - B Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
| | - Y C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Beijing 100730, China
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Zhang S, Qu J, Wang L, Li M, Zeng X. AB0147 GENE EXPRESSION PROFILES OF PRIMARY SJÖGREN’S SYNDROME ASSOCIATED THROMBOCYTOPENIA IN B-LYMPHOCYTE USING HIGH-THROUGHPUT SEQUENCING. Ann Rheum Dis 2020. [DOI: 10.1136/annrheumdis-2020-eular.2253] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
Background:Primary Sjögren’s syndrome(pSS) is a classical systemic autoimmune disease. Thrombocytopenia is one of the hematological manifestations of pSS with great challenges in clinic.Objectives:To identify the candidate genes and functionally enriched pathways in the immune genesis and progression of primary Sjögren’s syndrome (pSS) associated thrombocytopenia.Methods:High-throughput sequencing was performed on 3 patients with pSS, 3 patients with pSS associated thrombocytopenia and 3 healthy individuals. The differentially expressed genes (DEGs) were identified, and function enrichment analyses were processed. The protein-protein interaction network (PPI) was constructed, followed by calculation of topological characteristics and sub-module analysis in order to obtain hub DEGs. The expression of some hub genes was verified by Real-Time PCR in 24 pSS patients.Results:A total of 19 DEGs were identified. The enriched functions and pathway of the DEGs include Toll-like receptor signaling pathway, Salmonella infection, Viral protein interaction with cytokine and cytokine receptor, NF-kappa B signaling pathway and Human cytomegalovirus infection. Seven hub genes (TNF, IL1B, CXCL8, CCL3, CCL4, CCL3L1, CCL4L1) were identified and pathway enrichment analysis revealed that these genes were mainly enriched in toll-like receptor pathway. The relative expression of the CXCL8 mRNA in B-lymphocytes in patients with pSS associated thrombocytopenia was higher than that in the pSS without thrombocytopenia group. No differences were observed in the IL-1β or TNFα expression between these two groups.Conclusion:PSS associated thrombocytopenia might be a subset characterized by a systemic inflammatory state. The identification of upregulated genes involved in thrombocytopenia of pSS provides insight in disease pathogenesis and opens avenues for the design of novel therapeutic strategies.References:[1] Fox RI: Sjögren’s syndrome. Lancet, 2005; 366: 321–31.[2]Baldini C, Ferro F, Elefante E, Bombardieri S. Biomarkers for Sjögren’s syndrome. Biomark Med. 2018;12(3):275-286.[3]Hua F, Li Y, Zhao X, et al. The expression profile of toll-like receptor signaling molecules in CD19(+) B cells from patients with primary immune thrombocytopenia. Immunol Lett. 2016, 176:28-35.Table 1.Differentially expressed genes among patients with pSS associated thrombocytopenia, pSS without thrombocytopenia, and healthy controlsGeneLogFCin group2FDRin group 2LogFCin group1FDRin group 1TNF4.961.29E-034.554.98E-05CXCL88.881.29E-039.743.23E-05CCL35.654.54E-035.611.70E-05G0S27.384.54E-0312.331.09E-05LILRA38.427.23E-0310.264.31E-05IER35.449.53E-037.712.98E-06DUSP23.509.53E-033.918.12E-05TNFAIP32.639.53E-032.241.36E-03CCL44.531.19E-025.423.35E-06CCL4L26.721.40E-028.925.19E-05CCL4L14.721.40E-025.943.94E-06IL1B5.541.66E-0210.233.27E-06METRNL3.551.80E-024.022.08E-04ID22.932.43E-023.786.57E-03PER12.332.99E-022.427.68E-04EGR12.983.09E-022.931.80E-04CCL3L15.863.20E-026.665.94E-03FFAR24.944.09E-028.401.34E-05FOSB3.234.86E-023.491.39E-03Figure 1.DEGs in pSS associated thrombocytopenia. 183 DEGs (31 up- and 151 down- regulated) between pSS patients with and without thrombocytopenia(a, c). 459 DEGs between pSS associated thrombocytopenia patients and healthy individuals were identified (2up- and 457 down- regulated) (b, d). The overlap among the 2 groups contained 19 genes represents the DEGs specified in pSS associated thrombocytopenia (e).Figure 2.KEGG pathway analysis.Acknowledgments:The authors apologize to all colleagues whose work has not been separately cited or discussed here due to limitations in space or knowledge.Disclosure of Interests:SHUO ZHANG: None declared, Jingge Qu: None declared, Li Wang: None declared, Mengtao Li: None declared, Xiaofeng Zeng Consultant of: MSD Pharmaceuticals
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Tu H, Wang J, Huang Z, Zhai Y, Zhu Z, Zhang Z, Qu J, Zheng R, Yuan Y, Liu R, Zhang W, You B, Du J. Large anisotropy of magnetic damping in amorphous CoFeB films on GaAs(001). J Phys Condens Matter 2020; 32:335804. [PMID: 32294634 DOI: 10.1088/1361-648x/ab8984] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Amorphous CoFeB films grown on GaAs(001) substrates demonstrating significant in-plane uniaxial magnetic anisotropy were investigated by vector network analyzer ferromagnetic resonance. Distinct in-plane anisotropy of magnetic damping, with a largest maximum-minimum damping ratio of about 109%, was observed via analyzing the frequency dependence of linewidth in a linear manner. As the CoFeB film thickness increases from 3.5 nm to 30 nm, the amorphous structure for all the CoFeB films is maintained while the magnetic damping anisotropy decreases significantly. In order to reveal the inherent mechanism responsible for the anisotropic magnetic damping, studies on time-resolved magneto-optical Kerr effect and high resolution transmission electron microscopy were performed. Those results indicate that the in-plane angular dependent anisotropic damping mainly originates from two-magnon scattering, while the Gilbert damping keeps almost unchanged.
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Affiliation(s)
- Hongqing Tu
- National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, People's Republic of China. Department of Mathematics and Physics, Nanjing Institute of Technology, Nanjing 211167, People's Republic of China
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Qu J, Yang R, Song L, Kamel IR. Atypical lung feature on chest CT in a lung adenocarcinoma cancer patient infected with COVID-19. Ann Oncol 2020; 31:825-826. [PMID: 32165205 PMCID: PMC7126344 DOI: 10.1016/j.annonc.2020.03.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 12/29/2022] Open
Affiliation(s)
- J Qu
- Department of Radiology, the Affiliated Cancer Hospital of Zhengzhou University & Henan Cancer Hospital, Zhengzhou, Henan, China.
| | - R Yang
- Department of Medical Imaging, Henan Chest Hospital, Zhengzhou, Henan, China
| | - L Song
- Department of Radiology, the Sixth People Hospital of Zhengzhou, Zhengzhou, Henan, China
| | - I R Kamel
- Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
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Daiyan R, Chen R, Kumar P, Bedford NM, Qu J, Cairney JM, Lu X, Amal R. Tunable Syngas Production through CO 2 Electroreduction on Cobalt-Carbon Composite Electrocatalyst. ACS Appl Mater Interfaces 2020; 12:9307-9315. [PMID: 32023413 DOI: 10.1021/acsami.9b21216] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Controllable concomitant production of CO and H2 (syngas) during electrochemical CO2 reduction reactions (CO2RR) is expected to improve the commercial feasibility of the technology to mitigate CO2 emissions as the generated syngas can be converted into useful chemicals using the commercial Fischer-Tropsch (FT) process. Herein, we demonstrate the ability of a Co single-atom-decorated N-doped graphitic carbon shell-encapsulated cobalt nanoparticle electrocatalyst (referred as Co@CoNC-900) to controllably produce syngas at low overpotentials during CO2RR. Through the engineering and modulation of dual active sites for CO2RR (modified carbon shell with encapsulated Co) and hydrogen evolution reaction (Co-N4 moieties) within Co@CoNC by varying the annealing temperature, we are able to tune the H2: CO ratio from 1: 2 to 1: 1 to 3: 2 over a wide range of applied potentials (-0.5 V to -0.8 V versus reversible hydrogen electrode, RHE). This versatile control of H2: CO ratio in CO2RR reaction brings up significant opportunity of using CO2 and H2O and renewable energy for producing a range of chemicals.
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Affiliation(s)
- Rahman Daiyan
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Rui Chen
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Priyank Kumar
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Nicholas M Bedford
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Jiangtao Qu
- Aerospace, Mechanical and Mechatronic Engineering , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Australian Centre for Microscopy and Microanalysis , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Julie M Cairney
- Aerospace, Mechanical and Mechatronic Engineering , The University of Sydney , Sydney , New South Wales 2006 , Australia
- Australian Centre for Microscopy and Microanalysis , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Xunyu Lu
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
| | - Rose Amal
- Particles and Catalysis Research Laboratory, School of Chemical Engineering , The University of New South Wales , Sydney , New South Wales 2052 , Australia
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Liu H, Li J, Sun M, Qu J, Zheng R, Cairney JM, Zhu M, Li Y, Li W. Carbon-Coating Layers on Boron Generated High Critical Current Density in MgB 2 Superconductor. ACS Appl Mater Interfaces 2020; 12:8563-8572. [PMID: 31972090 DOI: 10.1021/acsami.9b20673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Boron particles with a homogeneous carbon-coating layer were employed as the precursor to fabricate MgB2 superconductors to generate artificial two-dimensional (2D) flux-pinning centers. Systematic microstructure investigation reveals that the carbon layers are well-distributed in the MgB2 matrix without agglomeration. The thickness of the carbon layers is smaller than the MgB2 coherent length, which makes them transparent to supercurrent. The critical current density is increased because of the strong flux-pinning effects of the 2D carbon layers in the superconductor as highly efficient flux-pinning centers and the increased irreversibility field due to the carbon-doping effects.
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Affiliation(s)
- Haobo Liu
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
| | - Jiancheng Li
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
| | - Mingjie Sun
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
| | | | - Rongkun Zheng
- School of Physics , the University of Sydney , Sydney , New South Wales 2006 , Australia
| | | | - Mingyuan Zhu
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
| | - Ying Li
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
- Institute for Sustainable Energy , Shanghai University , Shanghai 200444 , China
| | - Wenxian Li
- Institute of Materials, School of Materials Science and Engineering , Shanghai University , Shanghai 200072 , China
- Institute for Sustainable Energy , Shanghai University , Shanghai 200444 , China
- Shanghai Key Laboratory of High Temperature Superconductors , Shanghai 200444 , China
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Chepurna OM, Yakovliev A, Ziniuk R, Nikolaeva OA, Levchenko SM, Xu H, Losytskyy MY, Bricks JL, Slominskii YL, Vretik LO, Qu J, Ohulchanskyy TY. Core-shell polymeric nanoparticles co-loaded with photosensitizer and organic dye for photodynamic therapy guided by fluorescence imaging in near and short-wave infrared spectral regions. J Nanobiotechnology 2020; 18:19. [PMID: 31973717 PMCID: PMC6979398 DOI: 10.1186/s12951-020-0572-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Accepted: 01/07/2020] [Indexed: 01/09/2023] Open
Abstract
BACKGROUND Biodistribution of photosensitizer (PS) in photodynamic therapy (PDT) can be assessed by fluorescence imaging that visualizes the accumulation of PS in malignant tissue prior to PDT. At the same time, excitation of the PS during an assessment of its biodistribution results in premature photobleaching and can cause toxicity to healthy tissues. Combination of PS with a separate fluorescent moiety, which can be excited apart from PS activation, provides a possibility for fluorescence imaging (FI) guided delivery of PS to cancer site, followed by PDT. RESULTS In this work, we report nanoformulations (NFs) of core-shell polymeric nanoparticles (NPs) co-loaded with PS [2-(1-hexyloxyethyl)-2-devinyl pyropheophorbide-a, HPPH] and near infrared fluorescent organic dyes (NIRFDs) that can be excited in the first or second near-infrared windows of tissue optical transparency (NIR-I, ~ 700-950 nm and NIR-II, ~ 1000-1350 nm), where HPPH does not absorb and emit. After addition to nanoparticle suspensions, PS and NIRFDs are entrapped by the nanoparticle shell of co-polymer of N-isopropylacrylamide and acrylamide [poly(NIPAM-co-AA)], while do not bind with the polystyrene (polySt) core alone. Loading of the NIRFD and PS to the NPs shell precludes aggregation of these hydrophobic molecules in water, preventing fluorescence quenching and reduction of singlet oxygen generation. Moreover, shift of the absorption of NIRFD to longer wavelengths was found to strongly reduce an efficiency of the electronic excitation energy transfer between PS and NIRFD, increasing the efficacy of PDT with PS-NIRFD combination. As a result, use of the NFs of PS and NIR-II NIRFD enables fluorescence imaging guided PDT, as it was shown by confocal microscopy and PDT of the cancer cells in vitro. In vivo studies with subcutaneously tumored mice demonstrated a possibility to image biodistribution of tumor targeted NFs both using HPPH fluorescence with conventional imaging camera sensitive in visible and NIR-I ranges (~ 400-750 nm) and imaging camera for short-wave infrared (SWIR) region (~ 1000-1700 nm), which was recently shown to be beneficial for in vivo optical imaging. CONCLUSIONS A combination of PS with fluorescence in visible and NIR-I spectral ranges and, NIR-II fluorescent dye allowed us to obtain PS nanoformulation promising for see-and-treat PDT guided with visible-NIR-SWIR fluorescence imaging.
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Affiliation(s)
- O M Chepurna
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - A Yakovliev
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - R Ziniuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - O A Nikolaeva
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - S M Levchenko
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - H Xu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China
| | - M Y Losytskyy
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine
| | - J L Bricks
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, 02094, Ukraine
| | - Yu L Slominskii
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Kyiv, 02094, Ukraine
| | - L O Vretik
- Taras Shevchenko National University of Kyiv, Kyiv, 01601, Ukraine.
| | - J Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
| | - T Y Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, 518060, P. R. China.
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Zhang D, Jin N, Sun W, Li X, Liu B, Xie Z, Qu J, Xu J, Yang X, Su Y, Tang S, Han H, Chen D, Ding J, Tan M, Huang M, Geng M. Correction: Phosphoglycerate mutase 1 promotes cancer cell migration independent of its metabolic activity. Oncogene 2020; 39:2451-2452. [PMID: 31900417 PMCID: PMC8075972 DOI: 10.1038/s41388-019-1148-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- D Zhang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - N Jin
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - W Sun
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - X Li
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - B Liu
- The Chemical Proteomics Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Z Xie
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Qu
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Xu
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - X Yang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - Y Su
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - S Tang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - H Han
- Laboratory of Pharmaceutical Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - D Chen
- Laboratory of Pharmaceutical Analysis, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - J Ding
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - M Tan
- The Chemical Proteomics Center, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
| | - M Huang
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China.
| | - M Geng
- Division of Antitumor Pharmacology, State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai, China
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Feng D, Qu J, Zhang R, Sun X, Zheng L, Liu H, Zhang X, Lu Z, Lu F, Wang W, Dong H, Cheng Y, Liu H, Zheng R. ITO regulated high-performance n-Si/ITO/α-Fe2O3 Z-scheme heterostructure towards photoelectrochemical water splitting. J Catal 2020. [DOI: 10.1016/j.jcat.2019.11.033] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Yun F, Swain MV, Chen H, Cairney J, Qu J, Sha G, Liu H, Ringer SP, Han Y, Liu L, Zhang X, Zheng R. Nanoscale pathways for human tooth decay - Central planar defect, organic-rich precipitate and high-angle grain boundary. Biomaterials 2019; 235:119748. [PMID: 31978841 DOI: 10.1016/j.biomaterials.2019.119748] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 12/02/2019] [Accepted: 12/25/2019] [Indexed: 02/01/2023]
Abstract
Understanding the pathways and mechanisms of human tooth decay is central to the development of both prophylaxes and treatments, but only limited information is presently available about the initiation of caries at the nanoscale. By combining atom probe tomography and high-resolution electron microscopy, we have found three distinct initial sites for human dental enamel dissolution: a) along the central dark line (CDL) within carbonated apatite nanocrystals, b) at organic-rich precipitates and c) along high-angle grain boundaries. 3D maps of the atoms within hydroxyapatite nanocrystallites in sound and naturally-decayed human dental enamel reveal a higher concentration of Mg and Na in the CDL. The CDL is therefore thought to provide a pathway for the exchange of ions during demineralization and remineralization. Mg and Na enrichment of the CDL also suggests that it is associated with the ribbon-like organic-rich precursor in amelogenesis. Organic-rich precipitates and high-angle grain boundaries were also shown to be more vulnerable to corrosion while low-angle grain boundaries remained intact. This is attributed to the lower crystallinity in these regions.
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Affiliation(s)
- Fan Yun
- School of Physics, The University of Sydney, NSW, 2006, Australia; Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Michael V Swain
- School of Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Hansheng Chen
- School of Physics, The University of Sydney, NSW, 2006, Australia; Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Julie Cairney
- Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia; School of Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Jiangtao Qu
- School of Physics, The University of Sydney, NSW, 2006, Australia; Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia
| | - Gang Sha
- School of Materials Science and Engineering, Herbert Gleiter Institute of Nanoscience, Nanjing University of Science and Technology, Nanjing, Jiangsu, 210094, China
| | - Hongwei Liu
- Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia
| | - Simon P Ringer
- The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia; School of Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney, Sydney, NSW, 2006, Australia
| | - Yu Han
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Lingmei Liu
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Xixiang Zhang
- Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, 23955-6900, Saudi Arabia
| | - Rongkun Zheng
- School of Physics, The University of Sydney, NSW, 2006, Australia; Australian Center for Microscopy and Microanalysis, The University of Sydney, NSW, 2006, Australia; The University of Sydney Nano Institute, The University of Sydney, Sydney, NSW, 2006, Australia.
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Li C, Zhou B, Qu J, Sun XZ, Huang Q, Zhang GM, Wang MJ, Cui SJ. [Effect of anatomical changes of frontal recess and frontal sinus on airflow after nasalisation by image reconstruction and numerical simulation]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:805-812. [PMID: 31795540 DOI: 10.3760/cma.j.issn.1673-0860.2019.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To describe the influence of post-operative anatomical structure changes on nasal airflow characteristics by 3D reconstruction and numerical simulation in real cases after nasalisation with Draf Ⅲ so as to explore the correlation between the changes of anatomical structure and subjective symptoms as well as airflow characteristics. Methods: Ten patients underwent nasalization with Draf Ⅲ in Department of Rhinology in Beijing Tongren Hospital from 2006 to 2018 were selected retrospectively. Postoperative follow-up of all patients was more than 1 year. All patients had no abnormalities in their paranasal sinus CT scans and Lund-Kennedy scores were 0 except scar. VAS scores including nasal obstruction, stimulation in frontal sinus, and headache were collected at the same period. The control model was a normal person. Numerical simulation was used for calculating airflow characteristics in deep inspiratory period of both models. Independent sample Mann-Whitney U test and Spearman correlation test were used by software SPSS 22.0. Results: The airflow pressure in frontal sinus ostium was (7.21±1.39)×10(4) Pa (Mean±SD), which was lower than that in normal subjects (8.99×10(4) Pa) under deep inspiratory simulation. But, the velocities in frontal sinus ostium and frontal sinus were (40.10±2.46) m/s and (28.19±1.73) m/s respectively, which were higher than those in normal one (2.70 m/s, 0.73 m/s). The airflow patterns of the two models were basically similar. There was no significant difference in the opening size and volume of frontal sinus between different groups after grouped by three symptoms respectively. No correlation could be found between the opening size and volume of the frontal sinus with the appearance and severity of three subjective symptoms. Conclusions: The airflow pattern and distribution after nasalisation with Draf Ⅲ are like those of normal person. There is no correlation between the changes of anatomy in frontal recess and frontal sinus and nasal airflow characteristics as well as subjective symptoms.
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Affiliation(s)
- C Li
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - B Zhou
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - J Qu
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - X Z Sun
- Department of Otorhinolaryngology Head and Neck Surgery, Second Affiliated Hospital of Dalian Medical University, Dalian 116023, China
| | - Q Huang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - G M Zhang
- Department of Otorhinolaryngology Head and Neck Surgery, Tianjin First Central Hospital, Tianjin 300192, China
| | - M J Wang
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
| | - S J Cui
- Department of Otorhinolaryngology Head and Neck Surgery, Beijing Tongren Hospital, Capital Medical University, Key Laboratory of Otolaryngology Head and Neck Surgery, Ministry Education, Beijing 100730, China
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Qu J, Hsiao TC, DePeters EJ, Zaccaria D, Snyder RL, Fadel JG. A goal programming approach for balancing diet costs and feed water use under different environmental conditions. J Dairy Sci 2019; 102:11504-11522. [PMID: 31587901 DOI: 10.3168/jds.2019-16543] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 08/14/2019] [Indexed: 11/19/2022]
Abstract
Water is essential in livestock production systems. In typical dairy production systems, 90% of the total water used by a dairy farm is attributed to feed production. Theoretically, ration manipulation is a method to potentially reduce the irrigation water needed for feed crops without dramatically increasing diet costs. However, published quantitative studies on the relationship between feed production and water use that are integrated with linear programming models are scarce. The overall objective of this study was to develop an optimization framework that could achieve a balance between minimization of dietary costs and dietary irrigation water usage, and that could be used as a framework for future research and models for various livestock production systems. Weighted goal programming models were developed to minimize the dietary costs and irrigation water usage for a hypothetical cow under 8 different environmental scenarios. The environmental conditions used a 2 × 2 × 2 factorial design, including 2 atmospheric CO2 concentrations (400 and 550 ppm), 2 water years (dry and wet), and 2 irrigation methods (furrow and drip). A systematic weighting scheme was used to model the trade-off between minimizing diet cost and minimizing irrigation water use for feedstuffs. Each environmental condition generated a set of distinct diets, which each met the same nutrient requirements of the hypothetical cow but had a different water usage when the weighting scheme was changed from weighting minimum diet costs to minimum irrigation water usage. For water resource planning in areas of dairy production, this set of unique solutions provides the decision maker with different feeding options according to diet cost, water usage, and available feeds. As water was more constrained, dietary dry matter intake increased, concentrations of neutral detergent fiber, ether extract, and energy decreased, and the concentration of lignin increased because less nutritive but more water-saving feedstuffs were included in the diet. Mitigation costs of water usage were calculated from goal programming results and indicated that the potential value of water under water-limited conditions (e.g., in a drought region) was higher than that under water-sufficient conditions. However, a smaller increase in feed costs can initially significantly reduce water usage compared with that of a least-cost diet, which implies that the reduction of water usage through ration manipulation might be possible. This model serves as a framework for the study of irrigation water usage in dairy production and other livestock production systems and for decision-making processes involved in water resources planning in the broader area of animal production.
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Affiliation(s)
- J Qu
- Department of Animal Science, University of California, Davis 95616
| | - T C Hsiao
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - E J DePeters
- Department of Animal Science, University of California, Davis 95616
| | - D Zaccaria
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - R L Snyder
- Department of Land, Air and Water Resources, University of California, Davis 95616
| | - J G Fadel
- Department of Animal Science, University of California, Davis 95616.
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Shang S, Ye J, Dou W, Luo X, Qu J, Zhu Q, Zhang H, Wu J. Validation of Zero TE-MRA in the Characterization of Cerebrovascular Diseases: A Feasibility Study. AJNR Am J Neuroradiol 2019; 40:1484-1490. [PMID: 31467242 DOI: 10.3174/ajnr.a6173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2019] [Accepted: 07/02/2019] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE Zero TE-MRA is less sensitive to field heterogeneity, complex flow, and acquisition noise. This study aimed to prospectively validate the feasibility of zero TE-MRA for cerebrovascular diseases assessment, compared with TOF-MRA. MATERIALS AND METHODS Seventy patients suspected of having cerebrovascular disorders were recruited. Sound levels were estimated for each MRA subjectively and objectively in different modes. MRA image quality was estimated by 2 neuroradiologists. The degree of stenosis (grades 0-4) and the z-diameter of aneurysms (tiny group ≤3 mm and large group >3 mm) were measured for further quantitative analysis. CTA was used as the criterion standard. RESULTS Zero TE-MRA achieved significantly lower subjective perception and objective noise reduction (37.53%). Zero TE-MRA images showed higher signal homogeneity (3.29 ± 0.59 versus 3.04 ± 0.43) and quality of venous signal suppression (3.67 ± 0.47 versus 2.75 ± 0.46). The intermodality agreement was higher for zero TE-MRA than for TOF-MRA (zero TE, 0.90; TOF, 0.81) in the grading of stenosis. Zero TE-MRA had a higher correlation than TOF-MRA (zero TE, 0.84; TOF, 0.74) in the tiny group and a higher consistency with CTA (intraclass correlation coefficient, 0.83; intercept, -0.5084-1.1794; slope -0.4952 to -0.2093) than TOF-MRA (intraclass correlation coefficient, 0.64; intercept, 0.7000-2.6133; slope -1.0344 to -0.1923). Zero TE-MRA and TOF-MRA were comparable in the large group. Zero TE-MRA had more accurate details than TOF-MRA of AVM and Moyamoya lesions. CONCLUSIONS Compared with TOF-MRA, zero TE-MRA achieved more robust performance in depicting cerebrovascular diseases. Therefore, zero TE-MRA was shown to be a promising MRA technique for further routine application in the clinic in patients with cerebrovascular diseases.
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Affiliation(s)
- S Shang
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Ye
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - W Dou
- MR Research China (W.D., J.Q.), GE Healthcare, Beijing China
| | - X Luo
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Qu
- MR Research China (W.D., J.Q.), GE Healthcare, Beijing China
| | - Q Zhu
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - H Zhang
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
| | - J Wu
- From the Department of Radiology (S.S., J.Y., X.L., Q.Z., H.Z., J.W.), Clinical Medical College, Yangzhou University, Yangzhou, Jiangsu, China
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Abstract
Myopia prevention and control is an important health issue related to children and adolescents, general public physical fitness and national defense security. In 2018, General Secretary Xi Jinping gave instructions on students' myopia. Ministry of Education and other seven ministries and commissions issued the Implementation Plan of the Myopia Prevention and Control for Children and Adolescents. As the myopia prevalence continues to develop into an urgent situation, myopia prevention and control has become a national strategy. In the battle fighting against prevalent myopia, medical and scientific researchers, as professionals, play a key role in guiding the effective implementation of the project and coordinating among five parties including government, schools, medical institutions, families and individual students. It is of great significance to effectively prevent and control myopia for children and adolescents and to achieve the overall goal of prevention and control. This article summarizes the potential effective methods in myopia prevention and control, hoping to provide useful reference and help for the national prevention and control work. (Chin J Ophthalmol, 2019, 55: 81-85).
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Affiliation(s)
- J Qu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, Engineering Research Center For Myopia Control and Management, Ministry of Education, Wenzhou 325000, China
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Yakovliev A, Ziniuk R, Wang D, Xue B, Vretik LO, Nikolaeva OA, Tan M, Chen G, Slominskii YL, Qu J, Ohulchanskyy TY. Hyperspectral Multiplexed Biological Imaging of Nanoprobes Emitting in the Short-Wave Infrared Region. Nanoscale Res Lett 2019; 14:243. [PMID: 31325079 PMCID: PMC6642248 DOI: 10.1186/s11671-019-3068-x] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Accepted: 07/01/2019] [Indexed: 05/19/2023]
Abstract
Optical bioimaging with exogenous luminophores emitting in short-wave infrared spectral region (SWIR, ~ 1000-1700 nm) is a rapidly developing field, and the development of multiple SWIR-photoluminescent nanoprobes has recently been reported. In this regard, hyperspectral imaging (HSI), combined with unmixing algorithms, is a promising tool that can allow for efficient multiplexing of the SWIR-emitting nanoagents by their photoluminescence (PL) spectral profiles. The SWIR HSI technique reported here is developed to multiplex two types of nanoprobes: polymeric nanoparticles doped with organic dye (PNPs) and rare-earth doped fluoride nanoparticles (RENPs). Both types of nanoprobes exhibit PL in the same spectral range (~ 900-1200 nm), which hinders spectral separation of PL with optical filters and limits possibilities for their multiplexed imaging in biological tissues. By applying SWIR HSI, we exploited differences in the PL spectral profiles and achieved the spectrally selective and sensitive imaging of the PL signal from every type of nanoparticles. Unmixing of acquired data allowed for multiplexing of the spectrally overlapping nanoprobes by their PL profile. Both quantitative and spatial distribution for every type of nanoparticles were obtained from their mixed suspensions. Finally, the SWIR HSI technique with unmixing protocol was applied to in vivo imaging of mice subcutaneously injected with PNPs and RENPs. The applicability of hyperspectral techniques to multiplex nanoprobes in the in vivo imaging was successfully demonstrated.
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Affiliation(s)
- A. Yakovliev
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - R. Ziniuk
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - D. Wang
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - B. Xue
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - L. O. Vretik
- Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - O. A. Nikolaeva
- Taras Shevchenko National University of Kyiv, Kyiv, 01601 Ukraine
| | - M. Tan
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 People’s Republic of China
| | - G. Chen
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001 People’s Republic of China
| | | | - J. Qu
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
| | - T. Y. Ohulchanskyy
- Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen, Guangdong Province, 518060 People’s Republic of China
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Ran J, Zhang H, Qu J, Xia B, Zhang X, Chen S, Song L, Jing L, Zheng R, Qiao SZ. Atomically Dispersed Single Co Sites in Zeolitic Imidazole Frameworks Promoting High-Efficiency Visible-Light-Driven Hydrogen Production. Chemistry 2019; 25:9670-9677. [PMID: 31069880 DOI: 10.1002/chem.201901250] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Revised: 04/28/2019] [Indexed: 12/31/2022]
Abstract
As photocatalysis technology could transform renewable and clean solar energy into green hydrogen (H2 ) energy through solar water splitting, it is regarded as the "Holy Grail" in chemistry field in the 21st century. Unfortunately, the bottleneck of this technique still lies in the exploration of highly active, cost-effective, and robust photocatalysts. This work reports the design and synthesis of a novel zeolitic imidazole framework (ZIF) coupled Zn0.8 Cd0.2 S hetero-structured photocatalyst for high-performance visible-light-induced H2 production. State-of-the-art characterizations and theoretical computations disclose that the interfacial electronic interaction between ZIF and Zn0.8 Cd0.2 S, the high distribution of Zn0.8 Cd0.2 S on ZIF, and the atomically dispersed coordinately unsaturated Co sites in ZIF synergistically arouse the significantly improved visible-light photocatalytic H2 production performance.
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Affiliation(s)
- Jingrun Ran
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Hongping Zhang
- State Key Laboratory of Environmentally Friendly Energy Materials, Engineering Research Center of Biomass Materials (Ministry of Education), School of Materials Science and Engineering, Southwest University of Science and Technology, Sichuan, 621010, P. R. China
| | - Jiangtao Qu
- School of Physics, The University of Sydney, New South Wales, 2006, Australia
| | - Bingquan Xia
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
| | - Xuliang Zhang
- Key Laboratory of Functional Inorganic Material Chemistry, (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Shuangming Chen
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230029, P. R. China
| | - Li Song
- National Synchrotron Radiation Laboratory, CAS Center for Excellence in Nanoscience, University of Science and Technology of China, Hefei, Anhui, 230029, P. R. China
| | - Liqiang Jing
- Key Laboratory of Functional Inorganic Material Chemistry, (Ministry of Education), School of Chemistry and Materials Science, International Joint Research Center for Catalytic Technology, Heilongjiang University, Harbin, 150080, P. R. China
| | - Rongkun Zheng
- School of Physics, The University of Sydney, New South Wales, 2006, Australia
| | - Shi-Zhang Qiao
- School of Chemical Engineering, The University of Adelaide, Adelaide, SA 5005, Australia
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Liang YB, Wu HX, Liao N, Li M, Zhang Q, Wang PJ, Zheng JW, Fang AW, Qu J. [Changing trends of topical anti-glaucoma medications in the Eye Hospital of Wenzhou Medical University during the past ten years]. Zhonghua Yan Ke Za Zhi 2019; 54:520-525. [PMID: 29996614 DOI: 10.3760/cma.j.issn.0412-4081.2018.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the changing trends of topical anti-glaucoma medications in the outpatient of the Eye Hospital of Wenzhou Medical University over the decade 2005-2014. Methods: Retrospective case series study. The medications data of glaucoma outpatients in the Eye Hospital of Wenzhou Medical University were collected for the period of January 1(st) 2005 to December 31(st) 2014. SPSS 20.0 statistical software was used, mainly for statistical description of the data. The main outcome measures were the proportions of the prescriptions of different medications, and the proportions of the monotherapy and combination therapies. Results: During the 10 years, the number of glaucoma outpatients increased year by year, from 994 in 2005 to 3 266 in 2014, the gender ration was close to 1∶1, and the age were (57±18) years. The proportion of β-blockers decreased from 56.7% (750/1 323) in 2005 to 33.1% (2 120/6 407) in 2014. The proportion of cholinergic agents decreased from 17.2% (227/1 323) in 2005 to 10.3% (663/6 407) in 2014. While the proportion of prostaglandins increased from 13.3% (176/1 323) in 2005 to 36.8% (1 916/5 209) in 2011, which was close to the 37.9% (1 972/5 209) of β-blockers in 2011. In 2012, the prostaglandins proportion increased to 41.9% (2 435/5 810) exceeding the 37.2% (2 161/5 810) of β-blockers, and became the most prescribed medication. The proportion of prostaglandins continued to increase to 46.9% (3 008/6 407) in 2014. The proportion of α(2)-agonists increased from 17.0% (225/1 323) in 2005 to 22.8% (1 460/6 407) in 2014. The proportion of carbonic anhydrase inhibitors increased from 9.6% (127/1 323) in 2005 to 24.1% (1 546/6 407) in 2014.The proportion of monotherapy decreased from 78.0% (1 032/1 323) in 2005 to 58.6% (3 757/6 407) in 2014. The proportion of two drugs combination increased from 20.0% (264/1 323) in 2005 to 26.7% (1 709/6 407) in 2014. The proportion of three drugs combination increased from 2.0% (26/1 323) in 2005 to 12.3% (788/6 407) in 2014. The proportion of four drugs combination increased from 0.1% (1/1 323) in 2005 to 2.3% (150/6 407) in 2014. Conclusions: The changes of the proportions of topical anti-glaucoma medications were remarkable from 2005 to 2014 in the outpatient of the Eye Hospital of Wenzhou Medical University. The β-blockers and cholinergic agents were declining, while the prostaglandins, α(2)-agonists and carbonic anhydrase inhibitors were increasing, and the prostaglandins became the most prescribed medication since 2012. The proportion of combination therapy was increasing. (Chin J Ophthalmol, 2018, 54: 520-525).
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Affiliation(s)
- Y B Liang
- The Eye Hospital of Wenzhou Medical University, Wenzhou 325000, China
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Chen SR, An YY, Zhan Y, Qu J, Lei XW. [Quantitative evaluation of the relationship between femoral trochlear dysplasia and the degeneration of the patellofemoral cartilage by using T2mapping]. Zhonghua Yi Xue Za Zhi 2019; 99:1651-1655. [PMID: 31189265 DOI: 10.3760/cma.j.issn.0376-2491.2019.21.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Objective: To evaluate the relationship between the femoral trochlear dysplasia(FTD) and the degeneration of the patellofemoral cartilage by using MR T2mapping technique. Methods: Sixty two subjects with FTD(aged 18-45 years) were enrolled in Tianjin First Center Hospital from January 2016 to December 2017,the controls which both age and gender were matched.T2mapping scan were aquired for each subject and control. Compare the differences of the T2mapping values for each area between subjects and controls, and compare Dejour types of femoral trochlear in different age groups, respectively. Results: The T2mapping value of subjects was significant lower than controls: the superficial-femoral-lateral layer (sFL) (P=0.000) and the superficial-patella-lateral layer (sPL) (P=0.009). In the group of age less than 30 years, the T2mapping value of subjects was significant lower than controls:sFL (P=0.001) and sPL (P=0.015). In group of age greater than 30 years, the T2mapping value of subjects was significant lower than controls: sFL (P=0.035). In difference Dejour types of FTD, the T2mapping value of type B-D was lowest in sFL(P=0.014),sPL(P=0.000), the superficial-patella-medial layer (sPM) (P=0.020) and the the T2mapping value of type B-D was highest in the deep-femoral-medial layer (dFM) (P=0.006). The difference was statistically significant, P<0.05. Conclusion: The FTD might cause the early degeneration of patellofemoral cartilage, which significantly appear in the young age; The type B-D of FTD is more likely to cause the wider range of superficial cartilage injure and involved some part of deep layer; the injure shows dehydration change in superficial cartilage and edema in deep layer.
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Affiliation(s)
- S R Chen
- Tianjin University of Traditional Chinese Medicine, Tianjin 300110, China
| | - Y Y An
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - Y Zhan
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - J Qu
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
| | - X W Lei
- Department of Radiology, Tianjin First Center Hospital, Tianjin 300110, China
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Liu XQ, Chen QW, Feng HL, Wang B, Qu J, Sun Z, Heng MD, Pan SX. [Oral hygiene maintenance of locator attachments implant overdentures in edentulous population: A longitudinal study]. Beijing Da Xue Xue Bao Yi Xue Ban 2019; 51:136-144. [PMID: 30773558 DOI: 10.19723/j.issn.1671-167x.2019.01.024] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
OBJECTIVE To investigate the oral hygiene status of edentulous patients with locator attachments implant overdentures (IOD) and to analyze the relationship among daily hygiene behavior, oral hygiene status and peri-implant diseases. METHODS Edentulous patients who received IOD treatment with locator attachments from January 2012 to May 2016 were recruited. Clinical and radiographic examinations were conducted to assess the peri-implant tissue status. Modified plaque index (mPLI), sulcus bleeding index (SBI), gingival index (GI), and probing depth (PD) were recorded and peri-implant marginal bone loss (MBL) was measured using paralleling projection technique. Patients' peri-implant oral hygiene maintainence habits were investigated. The correlation between peri-implant diseases and oral hygiene status and behaviors was analyzed. RESULTS Fifty patients (125 implants) with an average follow-up time of 22 months (6-54 months) were enrolled. The mean values of mPLI, SBI, and GI were 1.4±1.2, 0.8±0.7, and 0.7± 0.6, respectively. Average PD was (2.2±0.7) mm. Mesial and distal maginal bone resorptions were (1.1±1.1) mm and (0.9±0.9) mm, respectively. The prevalance of mucositis and peri-implantitis of the implants were 49.6% and 0. The prevelance of mucositis in the patients with poor oral hygiene (mPLI≥2) was 11.9 times as much as that of those with adequate oral hygiene (mPLI<1). The patients who performed oral hygiene procedure on attachments at least twice a day achieved much lower mPLI scores than those who cleaned less than twice a day. CONCLUSION Oral hygiene condition in the group of patients with implant overdentures was poor, and it contributed to increased risk of peri-implant mucositis. The prevelance of musositis of the paitients with poor oral hygiene was 11.9 times as much as that of those with proper oral hygiene. Patients wearing IOD should pay more attention to the hygiene of the attachments.
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Affiliation(s)
- X Q Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Q W Chen
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - B Wang
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Qu
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Z Sun
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - M D Heng
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S X Pan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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Qu J, Chen H, Khan M, Yun F, Cui X, Ringer SP, Cairney JM, Zheng R. Quantitative Determination of How Growth Conditions Affect the 3D Composition of InGaAs Nanowires. Microsc Microanal 2019; 25:524-531. [PMID: 30773161 DOI: 10.1017/s1431927619000114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Covering a broad optical spectrum, ternary InxGa1-xAs nanowires, grown by bottom-up methods, have been receiving increasing attention due to the tunability of the bandgap via In composition modulation. However, inadequate knowledge about the correlation between growth and properties restricts our ability to take advantage of this phenomenon for optoelectronic applications. Here, three different InGaAs nanowires were grown under different experimental conditions and atom probe tomography was used to quantify their composition, allowing the direct observation of the nanowire composition associated with the different growth conditions.
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Affiliation(s)
- Jiangtao Qu
- School of Physics,Camperdown, New South Wales,Australia
| | - Hansheng Chen
- School of Physics,Camperdown, New South Wales,Australia
| | - Mansoor Khan
- School of Physics,Camperdown, New South Wales,Australia
| | - Fan Yun
- School of Physics,Camperdown, New South Wales,Australia
| | - Xiangyuan Cui
- Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney,2006 NSW,Australia
| | - Simon P Ringer
- Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney,2006 NSW,Australia
| | - Julie M Cairney
- Aerospace, Mechanical and Mechatronic Engineering, the University of Sydney,2006 NSW,Australia
| | - Rongkun Zheng
- School of Physics,Camperdown, New South Wales,Australia
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Qu J, Liu L, Heng J, Zhou C, Xiong Y, Jiang W, Yang N. A study evaluating the different treatment modalities for EGFR mutation positive advanced NSCLC patients that acquire c-MET amplification after EGFR TKI therapy resistant. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz063.031] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Li W, Kang J, Liu Y, Zhu M, Li Y, Qu J, Zheng R, Xu J, Liu B. Extrinsic Two-Dimensional Flux Pinning Centers in MgB 2 Superconductors Induced by Graphene-Coated Boron. ACS Appl Mater Interfaces 2019; 11:10818-10828. [PMID: 30785258 DOI: 10.1021/acsami.8b19645] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Extrinsic two-dimensional flux pinning centers, via graphene-encapsulated boron powder as precursors, have been introduced into MgB2 superconductors by means of in situ and diffusion sintering methods. Uniform graphene encapsulation of the boron powders was achieved by the hydrothermal method with highly dispersed graphene oxide as the precursor. The graphene coating layers induce remaining graphene layers and other defects acting as flux pinning centers in the matrix as well as improved connectivity in between grains. The increased critical current density ( Jc) is attributed to the enhanced flux pinning force and improved connectivity. Two-dimensional flux pinning centers provided by thin graphene layers and grain boundaries in MgB2 possess high flux pinning efficiency without suppressing the connectivity of the MgB2 superconductor.
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Affiliation(s)
- Wenxian Li
- Shanghai Key Laboratory of High Temperature Superconductors , Shanghai 200444 , China
| | | | | | | | | | - Jiangtao Qu
- School of Physics , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Rongkun Zheng
- School of Physics , The University of Sydney , Sydney , New South Wales 2006 , Australia
| | - Jianyi Xu
- Ningbo Jansen NMR Technology Co., Ltd. , 427 Gaoke Avenue, Cixi New Industrial Area, Zonghan Street , Cixi , Zhejiang 315301 , China
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Lv Z, Zhu Y, Qu J, Yuan N, Ding J. Carbon Coated SnO2 Hollow Nanocubes with Superior Sodium Storage Performance. Russ J Phys Chem 2019. [DOI: 10.1134/s0036024418130204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Chai JY, Liu JZ, Wang B, Qu J, Sun Z, Gao WH, Guo TH, Feng HL, Pan SX. [Evaluation of the fabrication deviation of a kind of milling digital implant surgical guides]. Beijing Da Xue Xue Bao Yi Xue Ban 2018; 50:892-898. [PMID: 30337754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To evaluate the deviation of digital implant surgical guides during fabrication process in the Organical Dental Implant (ODI) system. METHODS This study included two parts. The first part was the in vitro study. A resin block with a diagnostic template was used for the planning. After cone beam computed tomography (CBCT) scanning, a surgical guide with eight implants was virtually designed using the ODI system. The guide was milled by a 5-axial numerical controlled milling machine, and an optical scanning was taken to digitalize the guide to a standard tessellation language (STL) form. The STL data were then imported into an ODI software and registered with the original design. The deviation of the sleeves between the design and the STL was measured in the ODI software and set as the golden standard. Then the ODI examination table was used to measure the deviation of the guide during fabrication. Examiners A and B measured 10 times separately. The reliability and the validity of the examination table was calculated. The second part was the in vivo study: The deviation during fabrication of 12 guides designed and fabricated by the ODI system were measured using the examination table. RESULTS The standard deviation of the deviation measured using the examination table by examiners A and B were all below 0.40 mm (for the shell reference points) and 0.71 degree (for the angles). No significant difference was found between the two examiners for any implant sites. The result of the examination table was larger than that of the software for the shell reference point (t-test, P<0.05), but no significant difference was found for the angle deviation (t-test, P>0.05). The 45 implants positions in the 12 guides for the in vivo study were examined using the examination table. The deviations at the shell reference points were (1.06±0.29) mm (0.42-1.75 mm), and at the implant tip were (1.12±0.48) mm (0.41-2.44 mm). The angle deviations were (1.42±0.70) degree (0.29-2.96 degree). CONCLUSION Deviation is unavoidable during the fabrication process of the guides. The examination table of the ODI system is a reliable and valid tool to measure the deviation during fabrication of the ODI guides. More studies should be designed to research the relationship between the fabrication deviation and the implant insertion deviation.
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Affiliation(s)
- J Y Chai
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Z Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - B Wang
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - J Qu
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - Z Sun
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - W H Gao
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - T H Guo
- Dental Laboratory, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - H L Feng
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
| | - S X Pan
- Department of Prosthodontics, Peking University School and Hospital of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology & Beijing Key Laboratory of Digital Stomatology, Beijing 100081, China
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