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Do HT, Vu TV, Lavrentyev AA, Cuong NQ, Cuong PV, Tong HD. Electronic structure and interface contact of two-dimensional van der Waals boron phosphide/Ga 2SSe heterostructures. RSC Adv 2022; 12:19115-19121. [PMID: 35865616 PMCID: PMC9244894 DOI: 10.1039/d2ra02748h] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Accepted: 06/12/2022] [Indexed: 11/28/2022] Open
Abstract
In this work, we systematically examine the electronic features and contact types of van der Waals heterostructures (vdWHs) combining single-layer boron phosphide (BP) and Janus Ga2SSe using first-principles calculations. Owing to the out-of-plane symmetry being broken, the BP/Ga2SSe vdWHs are divided into two different stacking patterns, which are BP/SGa2Se and BP/SeGa2S. Our results demonstrate that these stacking patterns are structurally and mechanically stable. The combination of single-layer BP and Janus Ga2SSe gives rise to an enhancement in the Young’s modulus compared to the constituent monolayers. Furthermore, at the ground state, the BP/Ga2SSe vdWHs possess a type-I (straddling) band alignment, which is desired for next-generation optoelectronic applications. The interlayer separation and electric field are effectively used to tune the electronic features of the BP/Ga2SSe vdWH from the type-I to type-II band alignment, and from semiconductor to metal. Our findings show that the BP/Ga2SSe vdWH would be appropriate for next-generation multifunctional optoelectronic and photovoltaic devices. In this work, we systematically examine the electronic features and contact types of van der Waals heterostructures (vdWHs) combining single-layer boron phosphide (BP) and Janus Ga2SSe using first-principles calculations.![]()
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Affiliation(s)
- Hoang-Thinh Do
- Division of Computational Mechatronics, Institute for Computational Science, Ton Duc Thang University Ho Chi Minh City Vietnam .,Faculty of Electrical and Electronics Engineering, Ton Duc Thang University Ho Chi Minh City Vietnam
| | - Tuan V Vu
- Division of Computational Physics, Institute for Computational Science, Ton Duc Thang University Ho Chi Minh City Vietnam
| | - A A Lavrentyev
- Department of Electrical Engineering and Electronics, Don State Technical University 1 Gagarin Square 344010 Rostov-on-Don Russian Federation
| | - Nguyen Q Cuong
- Institute of Research and Development, Duy Tan University Da Nang 550000 Vietnam.,Faculty of Natural Sciences, Duy Tan University Da Nang 550000 Vietnam
| | - Pham V Cuong
- Faculty of Electrical Engineering Technology, Ha Noi University of Industry Ha Noi 100000 Vietnam
| | - Hien D Tong
- Faculty of Engineering, Vietnamese-German University Binh Duong Vietnam
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Bit A, Alblawi A, Chattopadhyay H, Quais QA, Benim AC, Rahimi-Gorji M, Do HT. Three dimensional numerical analysis of hemodynamic of stenosed artery considering realistic outlet boundary conditions. Comput Methods Programs Biomed 2020; 185:105163. [PMID: 31710989 DOI: 10.1016/j.cmpb.2019.105163] [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] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/25/2019] [Accepted: 10/29/2019] [Indexed: 06/10/2023]
Abstract
BACKGROUND AND OBJECTIVE Mortality rate increases globally among which one third is due to diseased blood vessels. Due to late diagnoses of the disease in vessels (severe stenoses), qualitative and rapid assessment becomes difficult. Earlier assessment of stenoses can lead to formulation of effective treatment protocol. It is often found that proliferation of secondary stenoses at downstream of a stenosed vessel depends on the degree of severity of primary stenoses. Numerical investigation of flow dynamics of blood in such condition helps in prediction of distributed field of secondarystenoses. This investigation also requires consideration of rigorous boundary conditions at inlet and outlet of defined flow domain. METHODS Patient-specific geometry of aortic arch with stenoses in descending aorta was considered for numerical estimation of biofluid dynamics. Boundary conditionsat inlet and outlet were extracted from time-resolved pulsed Doppler Ultrasound imaging at appropriate sections of the vessel. Womersley inlet flux was considered. Flow parameters like wall shear stress, oscillatory shear index, etc. were evaluated at upper and lower aortic arch of the vessel at different combinations of boundary conditions at inlet and four outlets respectively. RESULTS Effect of outlet boundary conditions were acknowledged for the progression of secondary stenoses. Severity of primary stenoses was found influencing the progression of secondary stenoses. It was found that the outlets Left Subclavian Artery and Left Common Carotid Artery greatly influence the flow dynamic structure within the stenosed aortic arch. Simultaneously, lower wall of aortic-arch had shown more affinity for secondary stenoses progression. CONCLUSION Aortic arch is a vital anatomical region of circulatory system which is vulnerable to progression of secondary stenoses in presence of primary stenoses in ascending or descending aorta. It also drives the author to speculate the influence of anurysm in descending aorta on this landmark of aortic arch.
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Affiliation(s)
- Arindam Bit
- Department of Biomedical Engineering, National Institute of Technology, Raipur, India.
| | - Adel Alblawi
- Mechanical Engineering Department, College of Engineering, Shaqra University, Dawadmi P.O. 11911, Ar Riyadh, Saudi Arabia.
| | | | - Qurratul Ain Quais
- Department of Biomedical Engineering, National Institute of Technology, Raipur, India
| | - Ali Cemal Benim
- Faculty of Mechanical and Process Engineering, Duesseldorf University of Applied Sciences, Germany
| | - Mohammad Rahimi-Gorji
- Experimental Surgery Lab, Faculty of Medicine and Health Science, Ghent University, Ghent 9000, Belgium; Biofluid, Tissue and Solid Mechanics for Medical Applications Lab (IBiTech- bioMMeda), Ghent University, Ghent, Belgium.
| | - Hoang-Thinh Do
- Division of Computational Mechatronics, Institute for Computational Science, Ton Duc Thang University, Ho Chi Minh City, Vietnam; Faculty of Electrical & Electronics Engineering, Ton Duc Thang University, Ho Chi Minh City, Vietnam.
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Takemae N, Nguyen PT, Le VT, Nguyen TN, To TL, Nguyen TD, Pham VP, Vo HV, Le QVT, Do HT, Nguyen DT, Uchida Y, Saito T. Appearance of reassortant European avian-origin H1 influenza A viruses of swine in Vietnam. Transbound Emerg Dis 2018; 65:1110-1116. [PMID: 29512309 DOI: 10.1111/tbed.12849] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [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: 11/20/2017] [Indexed: 11/26/2022]
Abstract
Three subtypes-H1N1, H1N2 and H3N2-of influenza A viruses of swine (IAVs-S) are currently endemic in swine worldwide, but there is considerable genotypic diversity among each subtype and limited geographical distribution. Through IAVs-S monitoring in Vietnam, two H1N2 influenza A viruses were isolated from healthy pigs in Ba Ria-Vung Tau Province, Southern Vietnam, on 2 December 2016. BLAST and phylogenetic analyses revealed that their HA and NA genes were derived from those of European avian-like H1N2 IAVs-S that contained avian-origin H1 and human-like N2 genes, and were particularly closely related to those of IAVs-S circulating in the Netherlands, Germany or Denmark. In addition, the internal genes of these Vietnamese isolates were derived from human A(H1N1)pdm09 viruses, suggesting that the Vietnamese H1N2 IAVs-S are reassortants between European H1N2 IAVs-S and human A(H1N1)pdm09v. The appearance of European avian-like H1N2 IAVs-S in Vietnam marks their first transmission outside Europe. Our results and statistical analyses of the number of live pigs imported into Vietnam suggest that the European avian-like H1N2 IAVs-S may have been introduced into Vietnam with their hosts through international trade. These findings highlight the importance of quarantining imported pigs to impede the introduction of new IAVs-S.
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Affiliation(s)
- N Takemae
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan
- Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - P T Nguyen
- Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
| | - V T Le
- Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
| | - T N Nguyen
- Epidemiology Division, Department of Animal Health, Hanoi, Vietnam
| | - T L To
- National Centre for Veterinary Diagnostics, Department of Animal Health, Hanoi, Vietnam
| | - T D Nguyen
- National Centre for Veterinary Diagnostics, Department of Animal Health, Hanoi, Vietnam
| | - V P Pham
- Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
| | - H V Vo
- Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
| | - Q V T Le
- Regional Animal Health Office No. 6, Department of Animal Health, Ho Chi Minh City, Vietnam
| | - H T Do
- National Centre for Veterinary Diagnostics, Department of Animal Health, Hanoi, Vietnam
| | - D T Nguyen
- Epidemiology Division, Department of Animal Health, Hanoi, Vietnam
| | - Y Uchida
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan
- Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
| | - T Saito
- Division of Transboundary Animal Disease, National Institute of Animal Health, NARO, Tsukuba, Japan
- Thailand-Japan Zoonotic Diseases Collaboration Center, Bangkok, Thailand
- United Graduate School of Veterinary Sciences, Gifu University, Gifu, Japan
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Adámek P, Olejníček J, Hubička Z, Čada M, Kment Š, Kohout M, Do HT. System for time-resolved laser absorption spectroscopy and its application to high-power impulse magnetron sputtering. Rev Sci Instrum 2017; 88:023105. [PMID: 28249530 DOI: 10.1063/1.4975175] [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] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
This paper deals with the development and construction of an apparatus for time-resolved tunable diode laser absorption spectroscopy (LAS) for the diagnostics of pulsed plasma. A detailed description of the extension of a progressive method of laser absorption spectroscopy in continuous regime to a direct triggering method of the time-resolved laser absorption spectroscopy (TR-LAS) is presented. The main advantage of the developed method is its capability to measure the time evolution of the whole absorption profile with a preset time resolution, which can be less than 1 μs. Therefore, the presented method of repetitive sampling applied on LAS in plasma processes is capable of simultaneous measurement of the density and kinetic temperature of selected particles. Its appropriate applications are to periodical processes in technological plasma, namely pulsed plasma discharges. The developed method of TR-LAS was applied to measurements of the temporal evolution of density and kinetic temperature of argon metastable species during high-power impulse magnetron sputtering of titanium and titanium dioxide thin films.
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Affiliation(s)
- P Adámek
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - J Olejníček
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - Z Hubička
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - M Čada
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - Š Kment
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - M Kohout
- Institute of Physics v.v.i., Academy of Sciences of the Czech Republic, Na Slovance 2, 182 21 Prague 8, Czech Republic
| | - H T Do
- Institute of Physics, Vietnam Academy of Science and Technology, No.18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Cigler T, Singer O, Moore A, Chuang E, Vahdat L, Reichman B, Levine AB, Do HT, Mandl LA. Abstract P3-15-06: No Correlation between Endocrine Symptoms and Musculoskeletal Symptoms in Women Receiving Adjuvant Aromatase Inhibitor Therapy. Cancer Res 2010. [DOI: 10.1158/0008-5472.sabcs10-p3-15-06] [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] [Indexed: 11/16/2022]
Abstract
Abstract
Background:
The etiology of Aromatase Inhibitor (AI) associated musculoskeletal symptoms remains unclear. It has been proposed that musculoskeletal side effects are related to the estrogen depletion achieved on AI therapy. Estrogen depletion with AI therapy is known to result in endocrine side effects. The 18-item Functional Assessment of Cancer Therapy Breast Cancer-Endocrine Subscale (FACTB-ES) is a reliable and well validated quality of life questionnaire shown to be sensitive to changes in endocrine symptoms in breast cancer patients. The objective of this study was to determine whether among women with breast cancer treated with adjuvant AI therapy, self reported musculoskeletal side effects correlate with increased hormonal side effects as measured by the FACTB-ES. Methods:
In this 6 month, single center, prospective cohort study, post-menopausal women with hormone-sensitive, non-metastatic breast cancer prescribed AIs by their treating oncologist were evaluated by a rheumatologist at baseline (before starting the AI) and at 6 months. Women who reported new or worsening musculoskeletal symptoms since starting the AI were classified as symptomatic. The FACTB-ES was administered at each visit.
Changes in scores between baseline and 6 months were compared between
the symptomatic and asymptomatic groups
Results:
Thirty-five subjects completed the 6 month follow up period. Nineteen (54%) were symptomatic and n=2 (5.7%) discontinued the AI due to these musculoskeletal symptoms. Mean time to onset of symptoms was 6 weeks (range 2 to 18 weeks). Baseline characteristics including age, ethnicity and body mass index did not differ between the groups. There was no significant difference in hormonal symptoms between groups. Both groups had equivalent worsening of their endocrine symptoms as seen by the reduction in their FACTB-score. The mean change in FACTB-ES score was -2.52 (range: -31.00, 23.00) in the symptomatic women versus -2.06 (range: -19.00, 22.21) in the asymptomatic women (Wilcoxon rank sum p=0.95). Conclusions:
These data suggest that endocrine symptoms as measured by the FACTB-ES do not correlate with the development of musculoskeletal pain in women treated with adjuvant AI therapy for breast cancer. Though larger studies are necessary to confirm these results, the musculoskeletal symptoms associated with AI use may not be estrogen-dependent.
Citation Information: Cancer Res 2010;70(24 Suppl):Abstract nr P3-15-06.
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Affiliation(s)
- T Cigler
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - O Singer
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - A Moore
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - E Chuang
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - L Vahdat
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - B Reichman
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - AB Levine
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - HT Do
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
| | - LA. Mandl
- Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY
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