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Bai Z, Zhao Y, Cui C, Yan J, Qin D, Tong J, Peng H, Liu Y, Sun L, Wu X, Li B, Li X. Multifaceted Materials for Enhanced Osteogenesis and Antimicrobial Properties on Bioplastic Polyetheretherketone Surfaces: A Review. ACS Omega 2024; 9:17784-17807. [PMID: 38680314 PMCID: PMC11044237 DOI: 10.1021/acsomega.4c00923] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 03/05/2024] [Accepted: 03/12/2024] [Indexed: 05/01/2024]
Abstract
Implant-associated infections and the increasing number of bone implants loosening and falling off after implantation have become urgent global challenges, hence the need for intelligent alternative solutions to combat implant loosening and falling off. The application of polyetheretherketone (PEEK) in biomedical and medical therapy has aroused great interest, especially because its elastic modulus close to bone provides an effective alternative to titanium implants, thereby preventing the possibility of bone implants loosening and falling off due to the mismatch of elastic modulus. In this Review, we provide a comprehensive overview of recent advances in surface modifications to prevent bone binding deficiency and bacterial infection after implantation of bone implants, starting with inorganics for surface modification, followed by organics that can effectively promote bone integration and antimicrobial action. In addition, surface modifications derived from cells and related products of biological activity have been proposed, and there is increasing evidence of clinical potential. Finally, the advantages and future challenges of surface strategies against medical associated poor osseointegration and infection are discussed, with promising prospects for developing novel osseointegration and antimicrobial PEEK materials.
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Affiliation(s)
- Ziyang Bai
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Yifan Zhao
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Chenying Cui
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Jingyu Yan
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Danlei Qin
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Jiahui Tong
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Hongyi Peng
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Yingyu Liu
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Lingxiang Sun
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Xiuping Wu
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Bing Li
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
| | - Xia Li
- Shanxi
Medical University School and Hospital of Stomatology, Taiyuan, Shanxi 030001, China
- Shanxi
Province Key Laboratory of Oral Diseases Prevention and New Materials, Taiyuan, Shanxi 030001, China
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Dong L, Ma Y, Jin X, Feng L, Zhu H, Hu Z, Ma X. High-Efficiency Corrosion Inhibitor of Biomass-Derived High-Yield Carbon Quantum Dots for Q235 Carbon Steel in 1 M HCl Solution. ACS Omega 2023; 8:46934-46945. [PMID: 38107954 PMCID: PMC10719925 DOI: 10.1021/acsomega.3c06702] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/01/2023] [Accepted: 11/06/2023] [Indexed: 12/19/2023]
Abstract
Eco-friendly self-doped carbon quantum dots (ZCQDs) with excellent corrosion inhibition ability were prepared via solid-phase pyrolysis only using Zanthoxylum bungeanum leaves as the raw material. Compared with the relevant research, a simpler and higher yield (25%) preparation process for carbon quantum dots was proposed. ZCQDs were characterized by transmission electron microscopy and X-ray photoelectron spectroscopy, and the average size of ZCQDs with multitudes of O- and N-containing functional groups was about 2.53 nm. The prepared ZCQDs were used to inhibit the corrosion of Q235 steel in HCl solution, and the inhibition behavior was investigated through weight loss, electrochemical test, surface analysis, and adsorption thermodynamic analyses. The results showed that the ZCQDs, acted as a mixed corrosion inhibitor, have an effective corrosion inhibition for Q235, the corrosion inhibition efficiency reached 95.98% at 200 mg/L, and at this concentration, effective protection of at least 132h (IE > 90%) is provided. Moreover, the adsorption mechanism of ZCQDs was consistent with that of Redlich-Peterson adsorption, including chemisorption and physisorption. A new corrosion inhibition mechanism of ZCQDs has been thoroughly studied and proposed; ZCQDs have functional groups containing O and N, which can form a protective barrier through physical adsorption and chemisorption, but the coverage of the protective film is low at low concentrations. With the increase of concentration, the protective film formed by ZCQDs on the metal surface will first increase the coverage and then adsorb more ZCQDs on the protective film to form a thicker and denser protective film to protect the metal. The carbon quantum dots prepared in this paper have advantages including a green, renewable precursor, a fast method, high yield, and excellent corrosion inhibition. Therefore, this work can inspire and facilitate, to a certain extent, the future application of doped carbon quantum dots as efficient corrosion inhibitors in HCl solutions.
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Affiliation(s)
- Liming Dong
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
| | - Yuyue Ma
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
| | - Xiaohan Jin
- College
of Chemistry and Chemical Engineering, China
University of Petroleum (East China), Qingdao 266580, China
| | - Li Feng
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
| | - Hailin Zhu
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
| | - Zhiyong Hu
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
| | - Xuemei Ma
- School
of Chemistry and Chemical Engineering, North
University of China, Taiyuan 030051, China
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3
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Wei HM, Wang FJ, Yan HW, Jiao WZ, Wei W. Atmospheric-Pressurized Process for Dimethyl Carbonate/Methanol Separation with and without Heat Integration: Design and Control. ACS Omega 2023; 8:20450-20470. [PMID: 37332782 PMCID: PMC10268619 DOI: 10.1021/acsomega.3c00656] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 05/11/2023] [Indexed: 06/20/2023]
Abstract
Process economy and dynamic controllability are critical for DMC/MeOH separation via the PSD process. In this paper, rigorous steady-state and dynamic simulations of atmospheric-pressurized process for DMC/MeOH separation with no, partial, and full heat integration have been carried out with Aspen Plus and Aspen Dynamics. Further investigations have been conducted into the economic design and dynamic controllability of the three neat systems. Simulation results indicated that: the separation process via full and partial heat integration provided TAC savings of 39.2 and 36.2%, respectively, compared to that of no heat integration; the non-heat-integrated system displays good dynamic performance, critical dynamic penalties were demonstrated for both partial and full heat integration processes, while the partial one exhibited a more robust control except for precisely maintaining XB2(DMC); a PCTC scheme with a CC/TC cascade control was proposed to precisely maintain the product concentration for the fully heat-integrated PSD process. A comparison of the economy between atmospheric-pressurized and pressurized-atmospheric sequences indicated that the former is more energy efficient. Further, a comparison of the economy between atmospheric-pressurized and pressurized-atmospheric sequences indicated that the former is more energy efficient. This study will provide new insights into the energy efficiency and has some implications for design and control of DMC/MeOH separation in the industrialization process.
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Affiliation(s)
- Hong-mei Wei
- Department
of Mechanical Engineering, North University
of China, No.3 Xueyuan Road, Taiyuan 030051, Shanxi, China
| | - Fu-jie Wang
- Department
of Mechanical Engineering, North University
of China, No.3 Xueyuan Road, Taiyuan 030051, Shanxi, China
| | - Hong-wei Yan
- Department
of Mechanical Engineering, North University
of China, No.3 Xueyuan Road, Taiyuan 030051, Shanxi, China
| | - Wei-Zhou Jiao
- Shanxi
Province Key Laboratory of Higee-Oriented Chemical Engineering, North University of China, No.3 Xueyuan Road, Taiyuan 030051, Shanxi, China
| | - Wei Wei
- Low
Carbon Energy Conversion Technology Research Center, Shanghai Advanced
Research Institute, Chinese Academy of Science, Shanghai 201203, P. R. China
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4
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Cheng W, Guo S, Sun Z, Wei XX, Gao L, Cao Y. Distribution of Metallic Elements in Four Group Components of High-Temperature Coal Tar Pitch. ACS Omega 2023; 8:16612-16619. [PMID: 37214714 PMCID: PMC10193538 DOI: 10.1021/acsomega.2c06981] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Accepted: 04/13/2023] [Indexed: 05/24/2023]
Abstract
The metallic elements in high-temperature coal tar pitch (HCTP) will affect the properties of carbon materials produced from the HCTP. The study on the metallic elements in HCTP is essential for the quality improvement of its derived carbon materials. In this paper, the content of 15 metallic elements in HCTP and its four group components, including n-heptane-soluble substance (HS), n-heptane-insoluble-toluene-soluble substance (HI-TS), toluene-insoluble-quinoline-soluble substance (TI-QS), and quinoline-insoluble substance (QI), was determined. The results show that the content of Na, Ca, Fe, Mg, Zn, K, Pb, and Al is more than 100 ppm and is much higher than that of other metallic elements. The content of Ni, V, Cr, Mo, Sb, Cu, and Mn ranges from 0 to 50 ppm. By mass calculation of the contents of four group components in HCTP, it can be concluded that Na and Fe are randomly distributed in the group components. Al, Zn, Pb, V, and Mn are mainly distributed in the inorganic form in the QI component. Ca, Mg, K, Ni, Cr, Mo, Sb, and Cu are mainly distributed in the small molecular group components such as HS and HI-TS.
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5
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Yuan J, Li Q, Ding L, Shi C, Wang Q, Niu Y, Xu C. Carbon Black/Multi-Walled Carbon Nanotube-Based, Highly Sensitive, Flexible Pressure Sensor. ACS Omega 2022; 7:44428-44437. [PMID: 36506197 PMCID: PMC9730765 DOI: 10.1021/acsomega.2c06548] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 11/10/2022] [Indexed: 05/27/2023]
Abstract
Flexible piezoresistive pressure sensors have promising applications in wearable devices, artificial intelligence, and other fields. However, developing low-cost and high-performance pressure sensors still poses a great challenge. Herein, we utilize low-cost carbon black (CB) and multi-walled carbon nanotubes (MWCNTs) mixed in porous polydimethylsiloxane to assemble a flexible piezoresistive pressure sensor combined with interdigitated electrodes. Simultaneously, the COMSOL Multiphysics simulation analysis was performed to predict the sensing behavior of the pressure sensor, which was verified by experiments; the preparation of the pressure sensor was guided according to the prediction. Additionally, we studied the effects of the mixed conductive filler's weight ratio, the shape of the interdigital electrode, and the line width and spacing of the interdigital electrode on the performance of the sensor. Based on the interaction of the 3D porous structure and the synergistic conductive network of CB/MWCNTs, the prepared pressure sensor exhibits a high sensitivity of 3.57 kPa-1 (∼21 kPa), a wide detection range of 0-275 kPa, fast response time (96 ms), fast recovery time (198 ms), good durability (about 3000 cycles), and good flexibility. Moreover, the fabricated sensor can monitor and recognize human activities (such as finger bending and mouse clicking), indicating that it has great potential in flexible wearable devices and other fields. It is worth noting that the preparation process of the entire pressure sensor was simple, low cost, and environmentally friendly, which provides a certain basis for industrial and commercial applications.
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Affiliation(s)
- Jinxia Yuan
- School
of Chemical Engineering and Technology, North University of China, Taiyuan030051, PR China
| | - Qiang Li
- MicroNano
System Research Center, College of Information and Computer &
Key Laboratory of, Advanced Transducers and Intelligent Control System
of Ministry of Education and Shanxi Province, Taiyuan University of Technology, Taiyuan030024, PR China
| | - Lifeng Ding
- School
of Chemical Engineering and Technology, North University of China, Taiyuan030051, PR China
- Department
of Chemistry and Chemical Engineering, Taiyuan
Institute of Technology, Taiyuan030008, PR China
| | - Congcong Shi
- Department
of Chemistry and Chemical Engineering, Taiyuan
Institute of Technology, Taiyuan030008, PR China
| | - Qi Wang
- Department
of Chemistry and Chemical Engineering, Taiyuan
Institute of Technology, Taiyuan030008, PR China
| | - Yulan Niu
- Department
of Chemistry and Chemical Engineering, Taiyuan
Institute of Technology, Taiyuan030008, PR China
| | - Caiyang Xu
- Department
of Chemistry and Chemical Engineering, Taiyuan
Institute of Technology, Taiyuan030008, PR China
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6
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Wu X, Wang L, Li Z. Identification of 3-Phenylquinoline Derivative PQ1 as an Antagonist of p53 Transcriptional Activity. ACS Omega 2022; 7:43180-43189. [PMID: 36467924 PMCID: PMC9713874 DOI: 10.1021/acsomega.2c05891] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Accepted: 11/01/2022] [Indexed: 06/17/2023]
Abstract
Transcription factor p53 regulates cellular responses to environmental perturbations via the transcriptional activation of downstream target genes. Inappropriate p53 activation can trigger abnormal cellular responses, therefore leading to acute or chronic tissue damage, human developmental syndromes, and neurodegenerative diseases. Antagonists of p53 transcriptional activity provide prospective therapeutic applications and molecular probes. In this article, we identified five 3-phenylquinoline derivatives as potential p53 inhibitors through screening a chemical library consisting of 120 compounds, in which PQ1 was the most active compound. PQ1 had no effect on p53 protein levels and decreased the expression of p53 target gene p21. PQ1 thermally stabilizes the wild-type p53 protein. Further, transcriptomics confirmed that PQ1 exposure generated a similar regulatory effect to transcription profiles with a reported p53 transcriptional inhibitor pifithrin-α. However, compared to pifithrin-α, PQ1 increased the sensitivity of SW480 cells to 5FU. Taken together, PQ1 was a novel antagonist of p53 transcriptional activity. We propose that PQ1 could be developed as a chemical tool to pinpoint the physiological functions of p53 and a novel lead compound for targeting dysfunctional p53 activation.
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Affiliation(s)
- Xingkang Wu
- Modern
Research Center for Traditional Chinese Medicine, The Key Laboratory
of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, Shanxi, P. R. China
- Key
Laboratory of Effective Substances Research and Utilization in TCM
of Shanxi Province, No.
92, Wucheng Road, Taiyuan 030006, Shanxi, P.
R. China
- Shanxi
Key Laboratory of Redevelopment of Famous Local Traditional Chinese
Medicines, No. 92, Wucheng
Road, Taiyuan 030006, Shanxi, P. R. China
| | - Lu Wang
- Modern
Research Center for Traditional Chinese Medicine, The Key Laboratory
of Chemical Biology and Molecular Engineering of Ministry of Education, Shanxi University, No. 92, Wucheng Road, Taiyuan 030006, Shanxi, P. R. China
| | - Zhenyu Li
- Department
of Pharmacy, Shandong Provincial Hospital
Affiliated to Shandong First Medical University, Jinan 250021, Shandong, P. R. China
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Cui J, Ren D, Tan J, Zhang H, Guo Y, Huang L. Surface Modification by Amino Group Inducing for Highly Efficient Catalytic Oxidation of Toluene over a Pd/KIT-6 Catalyst. ACS Omega 2022; 7:39950-39958. [PMID: 36385822 PMCID: PMC9648143 DOI: 10.1021/acsomega.2c04331] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/08/2022] [Accepted: 10/14/2022] [Indexed: 06/16/2023]
Abstract
Toluene is one of the typical volatile organic compounds in industry, particularly in energy and fuels production processes, which is required to be eliminated effectively to protect the environment. Catalytic oxidation of toluene is widely studied for its high efficiency, and rational design and synthesis of metal catalysts are keys for toluene oxidation. In this study, an efficient catalyst was designed and synthesized by introducing -NH2 groups on the ordered mesoporous silica (KIT-6) surface to anchor and disperse Pd species, leading to Pd nanoparticles being highly dispersed with uniform particle size distribution. Meanwhile, it was found that the introduction of -NH2 made Pd centers present an electron-rich state, and the active Pd centers could activate O2 molecules to generate more reactive oxygen species and promote the conversion of toluene, which was verified by in situ XPS and O2-TPD characterization. Compared with the catalysts prepared by an impregnation method, the catalytic performance of the Pd/NH2-KIT-6 (0.5 wt %) catalyst was significantly improved. A conversion of 90% for toluene (2400 ppm, 24,000 mL·g-1·h-1) was achieved at 171 °C, and the toluene conversion was maintained above 90% for 900 min, displaying the excellent activity and stability of the Pd/NH2-KIT-6 catalyst.
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Affiliation(s)
- Jinglei Cui
- Yellow
River Laboratory of Shanxi Province, Institute of Resources and Environmental
Engineering, Shanxi University, Taiyuan030006, PR China
| | - Dan Ren
- Yellow
River Laboratory of Shanxi Province, Institute of Resources and Environmental
Engineering, Shanxi University, Taiyuan030006, PR China
| | - Jingjing Tan
- Engineering
Research Center of Ministry of Education for Fine Chemicals, Shanxi University, Taiyuan030006, PR China
| | - Huirong Zhang
- Yellow
River Laboratory of Shanxi Province, Institute of Resources and Environmental
Engineering, Shanxi University, Taiyuan030006, PR China
| | - Yanxia Guo
- Yellow
River Laboratory of Shanxi Province, Institute of Resources and Environmental
Engineering, Shanxi University, Taiyuan030006, PR China
| | - Long Huang
- Beijing
Key Laboratory of Fuels Cleaning and Advanced Catalytic Emission Reduction
Technology, Beijing Institute of Petrochemical
Technology, Beijing102617, China
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Qin H, Guo Y. Targeting Telomerase Enhances Cytotoxicity of Salinomycin in Cancer Cells. ACS Omega 2022; 7:30565-30570. [PMID: 36061682 PMCID: PMC9435028 DOI: 10.1021/acsomega.2c04082] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2022] [Accepted: 08/09/2022] [Indexed: 06/15/2023]
Abstract
Salinomycin exhibits significant systemic adverse reactions such as tachycardia and myoglobinuria in mammals, which hinders its application as a drug for human cancers. Although many strategies aimed at increasing salinomycin's toxicity to cancer cells have been identified to allow a lower dose of salinomycin to be used, they often cause normal cell damage by themselves. Thus, it is urgent to find more effective methods to increase salinomycin's toxicity to cancer cells with little influences on normal cells. Telomerase, which is expressed highly in most cancer cells rather than normal somatic cells, plays central roles in cancer cell fate regulation. Targeting telomerase represents a potential method for enhancing salinomycin's cytotoxicity to cancer cells with little effects on normal cells. Herein, we improve the toxicity of salinomycin against cancer cells by telomerase inhibition BIBR1532 (BIBR), which binds to the active site of telomerase reverse transcriptase. We find that a non-toxic dose of BIBR can enhance cytotoxicity of salinomycin in MCF-7 and MDA-MB-231 cells. Moreover, BIBR enhances mammosphere formation inhibition mediated by salinomycin in MCF-7 and MDA-MB-231 cells. Further studies show that BIBR enhances tumor growth inhibition induced by salinomycin in vivo. To our knowledge, this is the first example that targeting telomerase improves anti-cancer effects of salinomycin.
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Yan J, Wang F, Li Y, Liu H, Gao Y, Li Z. Research on the Effect of Extinction Characteristics of Coal Dust on Visibility. ACS Omega 2022; 7:28293-28303. [PMID: 35990468 PMCID: PMC9386836 DOI: 10.1021/acsomega.2c02739] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 07/25/2022] [Indexed: 06/15/2023]
Abstract
A good knowledge of the reduction mechanism of visibility is fundamental to developing preventive strategies in coal mines. In this work, the Mie theory was selected for investigating the absorption and scattering of coal dust. A prediction model for evaluating the visibility was developed based on the extinction characteristics of coal dust. The optical properties have been discussed to simplify the model and clarify the relationships among the different wavelengths and diameters. Additionally, the variety of extinction coefficients can be reasonably used in guiding the calculated visibility under different conditions. The experimental results demonstrated that the reduction of visibility was attributed to the synergistic effect of the extinction of coal dust and droplet. For the field application of this prediction model, the relative errors of the calculated and measured visibility were 9.8 and 7.1% from models I and II, which reflected the small deviation between the two methods. The prediction model can accurately describe the visibility in mines due to coal dust pollution. The exploration results provide a significant reference for the development and application of air cleaning technology for increased visibility.
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Affiliation(s)
- Jingjing Yan
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
- Center of Shanxi Mine Safety for Graduate Education Innovation, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Fei Wang
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
- Center of Shanxi Mine Safety for Graduate Education Innovation, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Yucheng Li
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
| | - Hongwei Liu
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
- Center of Shanxi Mine Safety for Graduate Education Innovation, Taiyuan University of Technology, Taiyuan 030024, P.R. China
| | - Yabin Gao
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
| | - Ziwen Li
- College of Safety
and Emergency Management Engineering, Taiyuan
University of Technology, Taiyuan 030024, P.R. China
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10
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Guo Z, Cao Y, Zhang Z, Dong S. Geological Controls on the Gas Content and Permeability of Coal Reservoirs in the Daning Block, Southern Qinshui Basin. ACS Omega 2022; 7:17063-17074. [PMID: 35647473 PMCID: PMC9134417 DOI: 10.1021/acsomega.2c00371] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 04/28/2022] [Indexed: 06/15/2023]
Abstract
The gas content and permeability of the coal reservoir are the key factors affecting coalbed methane (CBM) productivity. To investigate the geological controls on the permeability and gas content of coal reservoirs in the Daning block, southern Qinshui Basin, geological surveys combined with laboratory experiments, including coal petrology analysis, proximate analysis, and methane isothermal adsorption experiments, were carried out. The results show that the gas content of coals in the Daning block ranges from 5.56 to 17.57 (avg. 12.83) m3/t, and the coal permeability is generally above 0.1 mD, averaging 0.96 mD. The gas content of coal reservoirs shows decreasing trends with the increase in ash yield and moisture content, while tends to increase with the increase of vitrinite content; however, the correlation coefficients are all extremely low. The gas content presents a strong positive correlation with the burial depth of coal seams, but overall poorly correlates with the coal thickness. The CBM-rich areas are generally located at the hinge zones of secondary synclines, while the lower gas content areas commonly occur at the hinge zones of secondary anticlines. The normal faults are developed in the Daning block, and as expected, the gas content of coal seams that are near the normal faults is commonly lower. It was found that the well testing permeability of coal reservoirs in the Daning block decreases exponentially with the increase of the minimum horizontal stress (σh) and the maximum horizontal principal stress (σH). With the increase of the burial depth, the coal permeability also decreases exponentially. The primary and cataclastic structure coals generally have a higher hydro-fracturing permeability than the granulitic and mylonitic structure coals. This work can serve as a guide for the target area selections of CBM enrichment and high production in the Daning block.
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Affiliation(s)
- Zhiqi Guo
- Key
Laboratory of Coalbed Methane Resources and Reservoir Formation Process,
Ministry of Education, China University
of Mining and Technology, Xuzhou, Jiangsu 221008, China
| | - Yunxing Cao
- School
of Safety Science and Engineering, Henan
Polytechnic University, Jiaozuo 454003, China
| | - Zheng Zhang
- Key
Laboratory of Coalbed Methane Resources and Reservoir Formation Process,
Ministry of Education, China University
of Mining and Technology, Xuzhou, Jiangsu 221008, China
| | - Shi Dong
- Shanxi
Lanhua Sci-tech Venture Co., Ltd., Jincheng 048000, China
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Zhang W, Li S, Chu R, Ma S, Li W, Li Y, Zhang T, Meng X, Zhao J. Slurryability and Influencing Mechanism of Hydrophobic Structures in Additive-Coal-Water Ternary System. ACS Omega 2022; 7:10167-10177. [PMID: 35382318 PMCID: PMC8973066 DOI: 10.1021/acsomega.1c06431] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 03/02/2022] [Indexed: 06/14/2023]
Abstract
This study investigates the effects of additive adsorption onto coal particles on surface properties, hydrophobic groups on the slurryability, and the moisture occurrence form on the performance of coal water slurry (CWS). Mechanisms related to the different hydrophobic structures of the additives are proposed. The adsorption method of sulfonated acetone formaldehyde enhances the adsorption capacity of coal surfaces but is not conducive to slurrying. Sodium lignin sulfonate has hydrophobic ends with nonpolar aromatic groups, three-dimensional macromolecular structures, and complex branched chains, which provide CWS with good stability and slurryability. Naphthalenesulfonate formaldehyde has a double benzene ring structure and provides the thick but nonuniform adsorption layers on coal surfaces. The many amorphous structures and low molecular weights of sodium humic sulfonate lead to nonuniform hydration films and poor slurryability. The results of this paper provide guidance for improving synergism in coal-water-additive systems and enhancing slurry performance.
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Affiliation(s)
- Wenjing Zhang
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Shichao Li
- Faculty
of Materials and Chemical Engineering, Yibin
University, Yibin 644000, China
| | - Ruizhi Chu
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Shaolian Ma
- School
of Chemical and Environmental Engineering, North China Institute of Science and Technology, Langfang, Hebei 065201, China
| | - Weisong Li
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Yulong Li
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Tonghua Zhang
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Xianliang Meng
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
| | - Jianqiao Zhao
- School
of Chemical Engineering and Technology, China University of Mining & Technology, Xuzhou 221116, China
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12
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Li Y, Chen J, Tang S, Zhang S, Xi Z. Biogeochemical Assessment of the Coalbed Methane Source, Migration, and Fate: A Case Study of the Shizhuangnan Block, Southern Qinshui Basin. ACS Omega 2022; 7:7715-7724. [PMID: 35284701 PMCID: PMC8908359 DOI: 10.1021/acsomega.1c06496] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
The exploration and exploitation of coalbed methane (CBM), an essential unconventional gas resource, have received much attention. In terms of shallow groundwater assessment during CBM production, biogenic methane natural formation in situ and methane migration from deep sources into shallow aquifers need to be of most concern. This study analyzes geochemical surveys including ions, isotopes, and dissolved methane concentrations in 75 CBM coproduced water samples in the southern Qinshui Basin. Most of these water samples are weakly alkaline. Some samples' negative oxidation/reduction potential (ORP) values reveal that the CBM reservoir water samples are mainly produced from reductive groundwater environments. Cl-, Na+, and HCO3 - are the dominant ionic constituents of the water samples, which are usually associated with dissolved methane concentrations. The biogeochemical parameters and isotopic features provide an opportunity to assess the origin, migration, and oxidation of biogenic or thermogenic methane. Some water samples suggest biogenic methane formation in situ characterized by negligible SO4 2- and NO3 - concentrations and low δ13CCH4. Only a few water samples indicate the migration of biogenic methane into shallow aquifers without oxidation based on elevated SO4 2-, NO3 -, and δ13CDIC and low δ13CCH4. A few cases characterized by elevated δ13CCH4, negative δ13CDIC values, and negligible SO4 2- and methane concentrations suggest the oxidation of biogenic methane rather than the migration of thermogenic methane. A significant number of cases mean methane migration to shallow aquifers. Partial oxidation of thermogenic or mixed methane is evaluated by negligible SO4 2-, NO3 -, and methane concentrations and elevated δ13CCH4. Dissolved methane isotopic compositions and aqueous biogeochemical features help study methane formation and potential migration in shallow groundwater.
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Affiliation(s)
- Yang Li
- School
of Earth and Environment, Anhui University
of Science and Technology, Huainan 232001, Anhui, China
- State
Key Laboratory of Mining Response and Disaster Prevention and Control
in Deep Coal Mines, Anhui University of
Science & Technology, Huainan 232001, Anhui, China
| | - Jian Chen
- School
of Earth and Environment, Anhui University
of Science and Technology, Huainan 232001, Anhui, China
- State
Key Laboratory of Mining Response and Disaster Prevention and Control
in Deep Coal Mines, Anhui University of
Science & Technology, Huainan 232001, Anhui, China
| | - Shuheng Tang
- School
of Energy Resource, China University of
Geosciences, Beijing 100083, China
- Key
Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment
Mechanism, Ministry of Education, Beijing 100083, China
- Key
Laboratory of Strategy Evaluation for Shale Gas, Ministry of Land and Resources, Beijing 100083, China
| | - Songhang Zhang
- School
of Energy Resource, China University of
Geosciences, Beijing 100083, China
- Key
Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment
Mechanism, Ministry of Education, Beijing 100083, China
- Key
Laboratory of Strategy Evaluation for Shale Gas, Ministry of Land and Resources, Beijing 100083, China
| | - Zhaodong Xi
- School
of Energy Resource, China University of
Geosciences, Beijing 100083, China
- Key
Laboratory of Marine Reservoir Evolution and Hydrocarbon Enrichment
Mechanism, Ministry of Education, Beijing 100083, China
- Key
Laboratory of Strategy Evaluation for Shale Gas, Ministry of Land and Resources, Beijing 100083, China
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13
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Wang D, Zhang P, Zhang Y, Tu S, Wang J, Hao Z. Distribution Characteristic and Migration Mechanism of Toxic Gases in Goafs during Close-Distance Coal Seam Mining: a Case Study of Shaping Coal Mine. ACS Omega 2022; 7:7403-7413. [PMID: 35252730 PMCID: PMC8892677 DOI: 10.1021/acsomega.2c00339] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
It is imperative to have an in-depth understanding of the gas migration mechanism during close-distance coal seam mining, not only to prevent fires in the coal industry but also to propose safety strategies for controlling toxic gases. The 1818 working face of the Shaping Coal Mine was used as an exemplary close-distance coal seam mine. Through the construction of boreholes and the arrangement of bundle pipes in the two parallel grooves of the working face and the upper goaf at the corresponding positions in the working face, the gases in the upper and lower goafs were monitored online timely. The firsthand information about the gas distribution was obtained through on-site tests, which provided the robust data for studying the migration mechanism of toxic gases during close-distance coal seam mining. By studying the spatial distribution of harmful gases in the upper goaf without mining the overlying coal, the static distribution law of gas was obtained. By discussing the spatial distribution and migration of harmful gases in the goaf of the overlying coal seam during mining, the dynamic distribution law of the gas was obtained. By studying the spatial distribution and migration of toxic gases in the mined-out area of the lower coal seam during mining, the dynamic distribution of gases in the mined-out area of the lower coal seam was obtained. Moreover, the migration mechanism of gas emission from the goafs in the close-distance coal seam was explored. By analyzing the factors responsible for the accumulation of toxic gases in the return air corner, feasible safety measures were also proposed to prevent this hazard during close-distance coal seam mining.
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Affiliation(s)
- Dapeng Wang
- School
of Mines, China University of Mining and
Technology, Xuzhou 221116, China
- Shanxi
Jinshen Shaping Coal Industry Company Limited, Xinzhou 036500, China
| | - Pengming Zhang
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Yulong Zhang
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shihao Tu
- School
of Mines, China University of Mining and
Technology, Xuzhou 221116, China
| | - Junfeng Wang
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Zijing Hao
- College
of Safety and Emergency Management Engineering, Taiyuan University of Technology, Taiyuan 030024, China
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14
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Guo Y, Yang Z, Fan J, Wang S, Chen F, Yang L, Liu Y, Liu K. Effects of Pellet Basicity on the Simulated Deposit Formation in Coal-Fired Rotary Kilns for Iron Ore Pellet Production. ACS Omega 2022; 7:4640-4647. [PMID: 35155955 PMCID: PMC8829868 DOI: 10.1021/acsomega.1c06800] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Accepted: 01/17/2022] [Indexed: 06/14/2023]
Abstract
Deposit formation in the coal-fired rotary kiln is frequently found in the production of fluxed iron ore pellets by the grate-kiln process and affects normal production. In this paper, the effects of pellet basicity (CaO/SiO2 mass ratio) on the simulated deposit formation were investigated. The results show that the porosity of deposits samples increases from 30.8 to 41.5% as the pellet basicity increases from 0.6 to 1.2, and most of the holes are irregular in shape. The contents of CaO and Fe2O3 in the silicates of the deposit samples increased with increasing basicity. The primary phase of the deposit samples changed from the M2O3 phase region to the clinopyroxene phase region with a lower melting point. As the basicity increased, the calculated proportions of the liquid phases in the deposit samples had an increasing trend. Moreover, the deposit sample adhesion to the refractory brick increases with the increase in pellet basicity.
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Affiliation(s)
- Yufeng Guo
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Zhuang Yang
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Jianjun Fan
- Technology
Center, Taiyuan Iron Steel (Group) Co.,
Ltd (TISCO), Taiyuan, Shanxi 030003, China
| | - Shuai Wang
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Feng Chen
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Lingzhi Yang
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Yajing Liu
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
| | - Kuo Liu
- School
of Minerals Processing and Bioengineering, Central South University, Changsha, Hunan 410083, China
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15
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Jia Y, Zhang R, Zhang T, Fan Z. Coordinated Control of the Fuel Cell Air Supply System Based on Fuzzy Neural Network Decoupling. ACS Omega 2021; 6:34438-34446. [PMID: 34963929 PMCID: PMC8697385 DOI: 10.1021/acsomega.1c04578] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/24/2021] [Accepted: 11/24/2021] [Indexed: 06/14/2023]
Abstract
In order to achieve the goal of carbon neutralization, hydrogen plays an important role in the new global energy pattern, and its development has also promoted the research of hydrogen fuel cell vehicles. The air supply system is an important subsystem of hydrogen fuel cell engine. The increase of air supply can improve the output characteristics of a fuel cell, but excessive gas supply will destroy the pressure balance of the anode and cathode. In the actual operation of a proton-exchange membrane fuel cell, considering the load change, it is necessary not only to ensure the stability of reactor pressure but also to meet the rapid response of inlet pressure and flow in the process of change. Therefore, the coordinated control of the two is the key to improving fuel cell output performance. In this paper, the dynamic model of the intake system is built based on the mechanism and experimental data. On this basis, the double closed-loop proportion integration differentiation (PID) control and feedforward compensation decoupling PID control are carried out for the air supply system, respectively. Then, the fuzzy neural network decoupling control strategy is proposed to make up for the shortcomings that the double closed-loop PID cannot achieve decoupling and the feedforward compensation decoupling does not have adaptability. The results show that the fuzzy neural network control can realize the decoupling between air intake flow and pressure and ensure that the air intake flow and pressure have a good follow-up, and the system's response speed is fast.
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Affiliation(s)
- Yuru Jia
- Taiyuan
University, Taiyuan 030032, China
| | - Ruiliang Zhang
- Department
of Vehicle Engineering, Taiyuan University
of Technology, Taiyuan 030024, China
- Shanxi
Automotive Design Engineering Technology Research Center, Taiyuan 030024, China
| | - Tao Zhang
- Department
of Vehicle Engineering, Taiyuan University
of Technology, Taiyuan 030024, China
| | - Zhengwu Fan
- Department
of Vehicle Engineering, Taiyuan University
of Technology, Taiyuan 030024, China
- Shanxi
Automotive Design Engineering Technology Research Center, Taiyuan 030024, China
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16
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Pan B, Lu X, Han X, Huan J, Gao D, Cui S, Ju X, Zhang Y, Xu S, Song J, Wang L, Zhang H, Niu Q. Mechanism by Which Aluminum Regulates the Abnormal Phosphorylation of the Tau Protein in Different Cell Lines. ACS Omega 2021; 6:31782-31796. [PMID: 34870001 PMCID: PMC8637959 DOI: 10.1021/acsomega.1c04434] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2021] [Accepted: 11/02/2021] [Indexed: 06/04/2023]
Abstract
Aluminum (Al) is an environmental neurotoxin to which humans are extensively exposed; however, the molecular mechanism of aluminum toxicity is unclear. Several studies have indicated that exposure to aluminum can cause abnormal phosphorylation of the tau protein. The purpose of this study was to investigate respectively the special molecular mechanism of abnormal regulation on synthesis and degradation of the tau protein induced by AlCl3 in cells of different species. The results of tau protein showed that the sites of abnormal tau phosphorylation induced by AlCl3 are Thr231, Ser262, and Ser396 in N2a cells. Meanwhile, the expressions of Thr181, Thr231, and Ser262 increased abnormally in SH-SY5Y cells. The result of the study showed that PP2A expression was high in N2a cells, while GSK-3β and PP2A in SH-SY5Y cells were involved in the synthesis process of abnormal tau phosphorylation induced by AlCl3. In N2a cells, the ubiquitin-proteasome pathway (UPP) mainly regulated tau phosphorylation at Ser262 and Ser396. Meanwhile, in SH-SY5Y cells, the UPP mainly regulated tau phosphorylation at Thr231 and Ser396. In summary, the UPP is involved in the degradation of Tau that is abnormally phosphorylated induced by AlCl3, but this process is site-specific and differs in cells of different species.
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Affiliation(s)
- Baolong Pan
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
- Sixth
Hospital of Shanxi Medical University (General Hospital of Tisco), Taiyuan 030001, China
| | - Xiaoting Lu
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Xiao Han
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Jiaping Huan
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Dan Gao
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Shuangjie Cui
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Xiaofen Ju
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Yunwei Zhang
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Shimeng Xu
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Jing Song
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Linping Wang
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Huifang Zhang
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
| | - Qiao Niu
- Department
of Occupational Health, School of Public Health, Shanxi Medical University, Taiyuan 030001, China
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17
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Guo Z, Cao Y, Dong S, Zhang Z. Experimental Studies on the Enhancement of Permeability of Anthracite by Acidizing: A Case Study in the Daning Block, Southern Qinshui Basin. ACS Omega 2021; 6:31112-31121. [PMID: 34841153 PMCID: PMC8613850 DOI: 10.1021/acsomega.1c04539] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Accepted: 11/03/2021] [Indexed: 06/13/2023]
Abstract
As the most active and top producing area of coalbed methane (CBM) in China, the southern Qinshui Basin (SQB) is dominated by anthracite. Due to the low permeability of coals, plenty of non-gas-producing and low production CBM wells exist in the SQB. The permeability enhancement through some technological means is the key to increasing the CBM production of this area. In this paper, some typical anthracites were selected from the Daning block of the SQB to assess the effect of acidification treatments on permeability enhancement. The maceral composition determination shows that approximately 15% of minerals exist in the collected coal samples, and the X-ray diffractometer (XRD) results reveal that the minerals consist primarily of clay minerals, along with a little amount of quartz, calcite, and dolomite. Two types of acidizing fluids were used to conduct acidification treatments on the anthracites for different lengths of time. The N2 permeability of the anthracites before and after acidification was measured and compared. The results show that the original samples exhibit low permeability. As the acidification time increases, the permeability of all of the samples shows an increasing trend, and the acid sensitivity index I a increases rapidly first and then levels off, and finally approaches 1. After 48 h of acidification, the samples show an increase ranging from 8.75 to 22.67 times (avg. 14.3 times) the original permeability. The permeability enhancement of the SQB anthracites is mainly attributed to the dissolution of acid-soluble minerals in the cleat system of coal. The minerals in the cleats are completely or partially dissolved by the acids, generating some soluble and insoluble substances; when the fluid flows through, the cleat space is reallocated. Overall, the cleat demineralization by acids frees up a lot of cleat spaces, leading to an increase in cleat connectivity. As a result, the fluid movement becomes smooth and the permeability of coal improves.
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Affiliation(s)
- Zhiqi Guo
- Key
Laboratory of Coalbed Methane Resources and Reservoir Formation Process,
Ministry of Education of China, China University
of Mining and Technology, Xuzhou 221116, China
| | - Yunxing Cao
- School
of Safety Science and Engineering, Henan
Polytechnic University, Jiaozuo 454003, China
| | - Shi Dong
- Shanxi
Lanhua Sci-tech Venture Co., Ltd., Jincheng 048000, China
| | - Zheng Zhang
- Key
Laboratory of Coalbed Methane Resources and Reservoir Formation Process,
Ministry of Education of China, China University
of Mining and Technology, Xuzhou 221116, China
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18
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Su W, Wang Y, Yin Z, Fan Q, Guo X, Yu L, Li Y, Hou L, Zhang M, Peng Q, Li Y, Wang E. 13.4 % Efficiency from All-Small-Molecule Organic Solar Cells Based on a Crystalline Donor with Chlorine and Trialkylsilyl Substitutions. ChemSusChem 2021; 14:3535-3543. [PMID: 34057293 PMCID: PMC8518815 DOI: 10.1002/cssc.202100860] [Citation(s) in RCA: 3] [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: 04/16/2021] [Revised: 05/27/2021] [Indexed: 05/29/2023]
Abstract
How to simultaneously achieve both high open-circuit voltage (Voc ) and high short-circuit current density (Jsc ) is a big challenge for realising high power conversion efficiency (PCE) in all-small-molecule organic solar cells (all-SM OSCs). Herein, a novel small molecule (SM)-donor, namely FYSM-SiCl, with trialkylsilyl and chlorine substitutions was designed and synthesized. Compared to the original SM-donor FYSM-H, FYSM-Si with trialkylsilyl substitution showed a decreased crystallinity and lower highest occupied molecular orbital (HOMO) level, while FYSM-SiCl had an improved crystallinity, more ordered packing arrangement, significantly lower HOMO level, and predominant "face-on" orientation. Matched with a SM-acceptor Y6, the FYSM-SiCl-based all-SM OSCs exhibited both high Voc of 0.85 V and high Jsc of 23.7 mA cm-2 , which is rare for all-SM OSCs and could be attributed to the low HOMO level of FYSM-SiCl donor and the delicate balance between high crystallinity and suitable blend morphology. As a result, FYSM-SiCl achieved a high PCE of 13.4 % in all-SM OSCs, which was much higher than those of the FYSM-H- (10.9 %) and FYSM-Si-based devices (12.2 %). This work demonstrated a promising method for the design of efficient SM-donors by a side-chain engineering strategy via the introduction of trialkylsilyl and chlorine substitutions.
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Affiliation(s)
- Wenyan Su
- Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsSiyuan Laboratory, Department of PhysicsJinan UniversityGuangzhou510632P. R. China
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborg412 96Sweden
| | - Yang Wang
- Laboratory of Advanced Optoelectronic Materials, College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123P. R. China
| | - Zhihong Yin
- Laboratory of Advanced Optoelectronic Materials, College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123P. R. China
| | - Qunping Fan
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborg412 96Sweden
| | - Xia Guo
- Laboratory of Advanced Optoelectronic Materials, College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123P. R. China
| | - Liyang Yu
- School of Chemical Engineering, and State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Yuxiang Li
- School of Materials Science and EngineeringXi'an University of Science and TechnologyXi'an710054P. R. China
| | - Lintao Hou
- Guangzhou Key Laboratory of Vacuum Coating Technologies and New Energy MaterialsSiyuan Laboratory, Department of PhysicsJinan UniversityGuangzhou510632P. R. China
| | - Maojie Zhang
- Laboratory of Advanced Optoelectronic Materials, College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123P. R. China
| | - Qiang Peng
- School of Chemical Engineering, and State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu610065P. R. China
| | - Yongfang Li
- Laboratory of Advanced Optoelectronic Materials, College of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123P. R. China
| | - Ergang Wang
- Department of Chemistry and Chemical EngineeringChalmers University of TechnologyGöteborg412 96Sweden
- School of Materials Science and EngineeringZhengzhou UniversityZhengzhou450001P. R. China
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19
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Zhao Y, He S, Guo Q, Li G, Wang L, Liu Y, Zhang Y. Role of FeS Catalyst in the Hydromodification of Lignite in a Subcritical Water-CO System. ACS Omega 2021; 6:21160-21168. [PMID: 34423224 PMCID: PMC8375094 DOI: 10.1021/acsomega.1c03120] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Accepted: 07/23/2021] [Indexed: 06/13/2023]
Abstract
The impacts of FeS catalysts on the hydromodification and structural evolution of lignite were investigated using Fourier transform infrared spectroscopy, nuclear magnetic resonance, and X-ray photoelectron spectroscopy. The results indicate that the caking property of lignite can be significantly improved in the presence of the FeS catalyst. When 6.0 wt % FeS was added, the maximum caking index (G RI) of modified coal reached 95. During the hydromodification, FeS has little effect on the intrinsic water gas shift reaction, but it can increase the CO conversion by promoting the decomposition and hydrogenation of coal so that more active hydrogen is generated and introduced into modified coal. FeS is conducive to the rupture of distal aliphatic groups in the extractible solutes, which promotes the entrance of hydrogen into the aromatic nucleus (Har) and α positions (Hα) of asphaltenes and β positions (Hβ) of preasphaltenes. After the catalytic hydromodification, the longer side chains or bridge bonds break and are hydrogenated to form the aliphatic structures with a shorter chain or a higher branched degree. Meanwhile, more oxygen-containing functional groups were removed along with the reduction of volatiles in the modified coal. The synergistic effect of FeS on these factors is favorable for the generation of plastic materials, which contributes to the development of the caking property of lignite.
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Affiliation(s)
- Yuqiong Zhao
- State
Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
| | - Shouqi He
- State
Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
| | - Qingxiang Guo
- State
Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
| | - Guoqiang Li
- State
Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
| | - Liping Wang
- Shanxi
Guoxin Gas Energy Institute Co., Ltd., Taiyuan 030024, China
| | - Yunbo Liu
- College
of Chemistry and Chemical Engineering, Taiyuan
University of Technology, Taiyuan 030024, China
| | - Yongfa Zhang
- State
Key Laboratory of Clean and Efficient Coal Utilization, Taiyuan University of Technology, Taiyuan 030024, China
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20
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Ji X, Song D, Shi W, Li Y. Influence of Nanopore Structure Deformation on Gas Migration in Coal. ACS Omega 2021; 6:19115-19126. [PMID: 34337249 PMCID: PMC8320132 DOI: 10.1021/acsomega.1c02442] [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] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 06/29/2021] [Indexed: 06/13/2023]
Abstract
To better understand the influence and control of nanopore characteristics on gas migration, three kinds of coal samples with different metamorphic degrees were selected for the experiments including high-pressure isothermal gas adsorption, low-pressure CO2 adsorption, and low-pressure Ar adsorption. The changes of the pore volume (PV) and specific surface area (SSA) of coal samples before and after adsorption-desorption were compared and analyzed. The adsorption data of all coal samples at a low pressure stage (<8 MPa) conformed to the Langmuir equation, and the adsorption capacity of powdered coal samples was higher than that of columnar coal samples. Some adsorption data deviated from the original fitting curve at a high pressure stage (>8 MPa), and this was the most remarkable in columnar coal samples. There was a positive correlation between the cumulative SSA of pores and adsorption capacity of coal samples. When the adsorption time was more than 10 min, the adsorption efficiency of 200 mesh coal samples from YJL was lower than those of 200 mesh coal samples from CZ and WY, which was due to the good development and connectivity of micro-fissures and nanopores in YJL coal samples. The pore size distribution of coal samples had changed after adsorption-desorption, and the cumulative deformation of the nanopore structure was anisotropic. As a result of the swelling or shrinkage deformation of the coal matrix, the PV and SSA with the same pore size presented many forms, such as almost unchanged, increased, or decreased. There are two types of deformation mechanisms: the whole collaborative deformation and partial deformation. Both gas adsorption and desorption can lead to the shrinkage or swell deformation of nanopores and fissures. In brief, the research provides theoretical and technical support for reservoir evaluation, fine drainage, and efficient development of coalbed methane.
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Affiliation(s)
- Xiaofeng Ji
- School
of Energy and Materials Engineering, Taiyuan
University of Science and Technology, Taiyuan 030024, P. R. China
- Institute
of Resource and Environment, Henan Polytechnic
University, Jiaozuo 454000, P. R. China
| | - Dangyu Song
- Institute
of Resource and Environment, Henan Polytechnic
University, Jiaozuo 454000, P. R. China
| | - Wenfang Shi
- School
of Materials Science and Engineering, Taiyuan
University of Science and Technology, Taiyuan 030024, P. R. China
| | - Yanfei Li
- Shanxi
Province Mineral Resources Investigation and Monitoring Center, Taiyuan 030024, P. R. China
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21
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Yu Y, Meng Z. Geothermal Distribution Characteristics in the Qinshui Basin and Its Significance to the Production of Coalbed Methane. ACS Omega 2021; 6:18914-18927. [PMID: 34337231 PMCID: PMC8320166 DOI: 10.1021/acsomega.1c02147] [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] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/30/2021] [Indexed: 06/02/2023]
Abstract
Temperature significantly affects the storage and transport of coalbed methane (CBM). Studies of geothermal distribution characteristics are important for the exploration and exploitation of CBM. In this study, more than 150 heat flow temperature data from coalbed methane wells in the Qinshui Basin were analyzed to investigate the geothermal distribution and its controlling factors. The results show that the geothermal gradient of the no. 3 coal seam ranges from 0 to 3.7 °C/hm with an average of 1.6 °C/hm, and the terrestrial heat flow of the no. 3 coal reservoir ranges from 0.9 to 94.6 mW/m2 with an average of 41.5 mW/m2. The reservoir temperature shows high values in the central and northwest parts of the basin, while the east and west edges of the basin show negative geothermal anomalies. It is found that groundwater has significant effects on the geothermal distribution in the Qinshui Basin, and with the increase of the groundwater level, the geothermal gradient decreases linearly. In addition, the geothermal gradient and terrestrial heat flow first increase and then tend to be stable with the increase in value of the total dissolved substances. Besides, with an increase in floor elevation, the geothermal gradient first increases linearly and then decreases linearly, obtaining a maximum value at about 450 m (transition floor elevation). This phenomenon is the result of the balance between heat supplying and heat losing. The geothermal distribution characteristics in the Qinshui Basin determine the reservoir temperature of the coalbed methane, and in turn, the reservoir temperature affects the adsorption, desorption, and diffusion behaviors of coalbed methane in situ.
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Affiliation(s)
- Yina Yu
- College
of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P. R. China
| | - Zhaoping Meng
- College
of Geosciences and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, P. R. China
- State
Key Laboratory of Coal and CBM Co-Mining, Shanxi Jincheng Anthracite Mining Group Company, Ltd., Jincheng 048000, Shanxi, P. R. China
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22
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Pan Z, Liu Y, Wang F, Lu G, Yang F, Cheng F. Al 2O 3 Dispersion-Induced Micropapillae in an Epoxy Composite Coating and Implications in Thermal Conductivity. ACS Omega 2021; 6:17870-17879. [PMID: 34308022 PMCID: PMC8295999 DOI: 10.1021/acsomega.1c01282] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/10/2021] [Accepted: 06/25/2021] [Indexed: 06/13/2023]
Abstract
Al2O3 particles with different sizes were dispersed into an epoxy precursor to improve the thermal conductivity (TC) of the epoxy coating. Al2O3 particles tend to aggregate in epoxy, and the aggregation becomes more apparent (formation of micropapillae when the particle size is larger than 1 μm) with the increase of particle size. The calculated fast aggregation rates of various-size Al2O3 particles in epoxy showed that the fast aggregation rate increased to a maximum rate of 6.37 × 10-20 m3·s-1 at a particle size of 200 nm and then decreased to a plateau value with the increase of particle size. The high fast aggregation rate caused the aggregation and the formation of nano- and micropapillae, causing the heterogeneous distribution of Al2O3 particles. These micropapillae were separated by epoxy, which made formation of continuous pathways fail, causing the reduction of TC and heterogeneous heat distribution. The highest thermal conductivity of 2.52 W/m·K and uniform heat distribution were observed at the optimum filler size of 30 nm. The research findings provide the knowledge of optimizing particle size on constructing a thermally conductive polymer composite.
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23
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Su J, Zhang S, Wang C, Li M, Wang J, Su F, wang Z. MACA Fast and Efficient Method for Detecting H 2O 2 by a Dual-Locked Model Chemosensor. ACS Omega 2021; 6:14819-14823. [PMID: 34151063 PMCID: PMC8209827 DOI: 10.1021/acsomega.1c00384] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 05/17/2021] [Indexed: 05/05/2023]
Abstract
A pentafluorobenzene-containing fluorescent probe GW-1 was designed and synthesized for monitoring hydrogen peroxide. The probe's fluorescence was activated by a dual-locked model system that consists of a spiro location and a target analyte, which avoids the "alkalizing effect." The smart GW-1 exhibited high selectivity toward hydrogen peroxide over other reactive oxygen species (ROS) by a dual-controlled molecular switch. These features are favorable for H2O2 sensing and pH changes in bioanalytical and biomedical applications.
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Affiliation(s)
- Jing Su
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Shuping Zhang
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Cairong Wang
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Min Li
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Jiajia Wang
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Feng Su
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
| | - Zhijun wang
- Department of Chemistry, Changzhi University, Changzhi 046011, P. R. China
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