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Impact of chosen force fields and applied load on thin film lubrication

Friction 2021年第5期9卷 1259-1274页

作者： Thi D.TA hien D.TA Kiet A.TIEU Bach h.tran School of Mechanical MaterialsMechatronicsand Biomedical EngineeringUniversity of WollongongNSW 2522Australia ho Chi Minh City University of Technology and Education Ho Chi Minh City 800010Vietnam

The rapid development of molecular dynamics(MD)simulations,as well as classical and reactive atomic potentials,has enabled tribologists to gain new insights into lubrication performance at the fundamental ***,the impact of adopted potentials on the rheological properties and tribological performance of hydrocarbons has not been researched *** extensive study analyzed the effects of surface structure,applied load,and force field(FF)on the thin film lubrication of *** lubricant film became more solid‐like as the applied load *** particular,with increasing applied load,there was an increase in the velocity slip,shear viscosity,and *** degree of ordering structure also changed with the applied load but rather *** was also significantly dependent on the surface *** chosen FFs significantly influenced the lubrication performance,rheological properties,and molecular *** adaptive intermolecular reactive empirical bond order(AIREBO)potential resulted in more significant liquid‐like behaviors,and the smallest velocity slip,degree of ordering structure,and shear stress were compared using the optimized potential for liquid simulations of united atoms(OPLS‐UAs),condensed‐phase optimized molecular potential for atomic simulation studies(COMPASS),and ***,classical potentials,such as OPLS‐UA and COMPASS,exhibit more solid‐like behavior than reactive potentials ***,owing to the solid‐like behavior,the lubricant temperatures obtained from OPLS‐UA and COMPASS were much lower than those obtained from AIREBO and *** increase in shear stress,as well as the decrease in velocity slip with an increase in the surface potential parameterζ,remained conserved for all chosen FFs,thus indicating that the proposed surface potential parameterζfor the COMPASS FF can be verified for a wide range of atomic models.

关键词： molecular dynamics simulation force fields applied load tribofilm hydrocarbon

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Insurance Plan for Service Assurance in Cloud Computing Market with Incomplete Information

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Journal of Communications and Information Networks 2022年第1期7卷 11-22页

作者： Yanru Zhang Chunxiao Jiang Nguyen h.tran Shengrong Bu FeiRichard Yu Zhu han College of Computer Science and Engineering the University of Electronic Science and Technology of ChinaChengdu 611731China Shenzhen Institute for Advanced Study UESTCLonghuaShenzhen 518110China Tsinghua Space Center Tsinghua UniversityBeijing 10084China School of Computer Science the University of SydneySydneyNew South WalesAustralia Department of Engineering Brock UniversityONCanada School of Information Technology Depart.of Systems and Computer EngineeringCarleton UniversityOttawa K1S 5B6ONCanada Department of Electrical and Computer Engineering the University of HoustonHouston 77004TXUSA

Nowadays,cloud computing has been identified as new opportunities for migrating to the expected agility,reuse,and adaptive capabilities that can support the ever changing IT trends and ***,the rapid evolution of those technologies also comes with open issues such as security,privacy,integrity,quality of services,and their possible detrimental *** this work,the concept of insurance is introduced to compensate the cloud computing customers when encountering those failures if service providers(SPs)have insurance ***,we consider the situation when the insurer is unable to see the system failure risk levels of the SPs,which is usually seen as an incomplete information market,in contrast with the optimal situation in a complete information ***,an insurance-based cloud computing architecture is proposed to build a monetary credit system in which the cloud computing SP pays a premium for a certain coverage to the ***,problem is formulated to solve the optimal insurance plan in complete and incomplete information markets,together with detail analysis of insurance policies in both cases are ***,simulation results show the properties of the two insurance plans and parameters that affect the design of the insurance plan.

关键词： service assurance cloud computing market incomplete information game theory insurance plan

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Action Research in the English Language Classroom

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基础教育外语教学研究 2020年第5期 31-35页

作者： Thu h.tran 不详

Thu tran explains why action research is beneficial for teacher professional growth..Approaches to research In oral communication,people often use the verb research’to mean'look carefully and closely into a topic,issue,or object',People who plan to buy a new house,vehicle or laptop computer may say that they have done some research on the item of choice prior to purchasing them.

关键词： verb Tra explain

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how to"pick up"colorectal serrated lesions and polyps in daily histopathology practice:From terminologies to diagnostic pitfalls

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World Journal of Clinical Oncology 2024年第9期15卷 1157-1167页

作者： Thai h tran Vinh h Nguyen Diem TN Vo Department of Pathology Da Nang HospitalDa Nang 50000Viet Nam Department of Pathology University Medical Center Ho Chi Minh CityHo Chi Minh 70000Viet Nam Department of histology-Embryology and Pathology University of Medicine and Pharmacy at Ho Chi Minh CityHo Chi Minh 70000Viet Nam

Over the last decade,our knowledge of colorectal serrated polyps and lesions has significantly improved due to numerous studies on this group of precursor *** lesions were misleading as benign before 2010,but they are currently reclassified as precancerous lesions that contribute to 30%of colorectal cancer through the serrated neoplasia *** World health Organization updated the classification for serrated lesions and polyps of the colon and rectum in 2019,which is more concise and applicable in daily *** responsible authors prescribe that“colorectal serrated lesions and polyps are characterized by a serrated(sawtooth or stellate)architecture of the epithelium.”From a clinical standpoint,sessile serrated lesion(SSL)and SSL with dysplasia(SSLD)are the two most significant *** these advancements,the precise diagnosis of SSL and SSLD based mainly on histopathology remains challenging due to various *** review describes the nomenclature and the terminology of colorectal serrated polyps and lesions and highlights the diagnostic criteria and obstacles encountered in the histopathological diagnosis of SSL and SSLD.

关键词： Sessile serrated lesions Sessile serrated lesions with dysplasia Serrated polyps Sessile serrated adenoma Benign hyperplastic polyps Serrated lesions/polyps

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Modeling the Effect of Thermal Diffusion Process from Nuclear Power Plants in Vietnam

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Energy and Power Engineering 2017年第8期9卷 403-418页

作者： tran h. Thai Doan Q. Tri National hydrometeorological Service Hanoi City Vietnam International Association of Lowland Technology Saga City Japan Sustainable Management of Natural Resources and Environment Research Group Faculty of Environment and Labour Safety Ton Duc Thang University Ho Chi Minh City Vietnam

In this study, we evaluate the ecological impact of effluent cooling water from the Ninh Thuan nuclear power plant II, using a two-dimensional hydraulic model to simulate thermal diffusion from the effluent outfall. Sites selected for this study were Ninh Thuan nuclear power plant and Vinh hai seawater in four different scenarios. This paper utilized the relationship between surface water temperature and the water temperature at a depth of -15 m to calculate the water temperature at intake and outlet at a depth of -14 m. A combination between the results of interpolated and results of model showed that effluent cooling water from Ninh Thuan plant affected the largest incidence about 2450 m in the North, 880 m in the South and 960 m in the West. It can be considered as safe distance to not to affect the coral reefs ecosystem in the North and sea turtle conservation area in the South. This study was first in this region to have an integrated approach using two-dimensional model.

关键词： Ninh Thuan Nuclear Power Plant Effluent Cooling Water Ecological System MIKE 21

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The role of ginseng as an anti-asthmatic agent

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Acupuncture and herbal Medicine 2024年第3期4卷 358-366页

作者： Kailynn J.Yang Liana Y.A.Bautista Danielle G.Iben Dana h.tran Loyola University of Chicago Stritch School of Medicine MaywoodILUSA

Introduction Asthma is an inflammatory obstructive respiratory lung disease characterized by limited *** is estimated that more than 300 million people worldwide are affected by asthma,and this number is expected to increase over the next few years[1].Uncontrolled asthma is associated with a severely impaired quality of life and increased mortality rates[2].Other adverse effects of poorly controlled asthma include obesity,pneumonia.

关键词： asthma impaired mortality

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Surveillance tools for detection of recurrent nasopharyngeal carcinoma: An evidence-based review and recommendations

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World Journal of Otorhinolaryngology-head and Neck Surgery 2022年第3期8卷 187-204页

作者： Andrew Thamboo Kim h.tran Annette X.Ye Issraa Shoucair Basel Jabarin Eitan Prisman Cathie Garnis St.Paul's Sinus Centre Otolaryngology Head and Neck Surgery1081Burrard StVancouverV6Z 1Y6BCCanada Department of Biomedical Physiology and Kinesiology SimonFraserUniversity8888 University DrBurnabyV5A1S6BCCanada The University of British Columbia Faculty of Medicine MDProgram317-2194Health SciencesMallVancouverV6T1Z3BCCanada British Columbia Cancer Research Centre Cancer Genetics and Developmental Biology675 W 10th AveVancouverV5Z 1L3BCCanada VancouverGeneral hospital Otolaryngology HeadandNeckSurgery899W12thAveVancouverV5Z 1M9BCCanada

Objective: Nasopharyngeal carcinomas (NPC) are tumors arising from epithelium of the nasopharynx. The 5-year survival rate of primary NPC is 80% with significant risks of recurrence. The objective here is to provide an evidence-based systemic review of the diagnostic value of different modalities in detecting local, regional, and distal recurrent NPC, as well as the associated costs with these ***: MEDLINE, EMBASE, and the Cochrane review database were queried. Two hundred and twenty-three abstracts were generated using the inclusion criteria: patients >18 years of age;histopathological reference standard;and modalities pertaining to imaging or ***: Twenty-four manuscripts fulfilled the inclusion criteria and 5 surveillance tools identified: endoscopy, MR, FDG-PET, Tc-99m MIBI and201TI SPECT, and EBV ***: For local surveillance, endoscopy is the gold standard recommendation, with increased efficacy if Narrow Band Imaging or contact endoscopy are utilized. MRI and FDG-PET is also recommended to help with local to distal spread;however, Tc-99m MIBI and201TI SPECT are options as well. EBV DNA is recommended as a cheap and accessible adjunct surveillance tool if an available as an option.

关键词： EBV DNA FDG-PET Imaging MR Endoscopy Recurrent Nasopharyngeal Carcinoma

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是否可利用1h-MRS匀场值获得31P-MRS频谱

是否可利用1H-MRS匀场值获得31P-MRS频谱

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第十四届全国波谱学学术会议

作者：吴仁华郭岗 tran h terBrugge KG Mikulis DJ 广东省汕头大学医学院第二附属医院多伦多大学西部医院

目的：P 磁共振频谱(MRS)在活体中应用时,理想的匀场非常困难。本研究的目的是应用相同的扫描序列,验证h MRS 的匀场值运用于p 频谱的可行性。材料和方法：本研究采用模型及4名健康志愿者。模型为充满脑代谢物的圆玻璃球。采用3-T GE ...

目的：P 磁共振频谱(MRS)在活体中应用时,理想的匀场非常困难。本研究的目的是应用相同的扫描序列,验证h MRS 的匀场值运用于p 频谱的可行性。材料和方法：本研究采用模型及4名健康志愿者。模型为充满脑代谢物的圆玻璃球。采用3-T GE 磁共振扫描仪。h和 P MRS 均采用同样的定位及同样大小的扫描野,应用 SE MRS 序

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大肠埃希菌临床分离株对喹诺酮类抗菌药的质粒介导耐药

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中国感染与化疗杂志 2006年第4期6卷 217-221页

作者：王明贵 Johnh.tran GeorgeA.Jacoby 张婴元汪复 DavidC.hooper 复旦大学附属华山医院抗生素研究所上海200040 美国哈佛医学院麻省总医院感染科美国Lahey医学中心感染科

目的了解近年来发现的质粒介导耐药机制在大肠埃希菌临床株对喹诺酮类耐药中所起的作用。方法78株环丙沙星耐药菌株分离自上海5所教学医院。以克隆斑点杂交及Southern杂交方法筛选质粒介导耐药基因qnr；以接合试验了解喹诺酮耐药的可转... 详细信息

目的了解近年来发现的质粒介导耐药机制在大肠埃希菌临床株对喹诺酮类耐药中所起的作用。方法78株环丙沙星耐药菌株分离自上海5所教学医院。以克隆斑点杂交及Southern杂交方法筛选质粒介导耐药基因qnr；以接合试验了解喹诺酮耐药的可转移性；对qnr基因进行序列分析,以引物步移法对qnr周边质粒DNA进行测序、分析。结果78株大肠埃希菌中,6株(7．7%)qnr检测阳性。在6株阳性菌中,喹诺酮耐药性均可通过质粒转移,接合子对环丙沙星的MIC较受体菌上升16～250倍。qnr基因与最早报道的序列一致,qnr位于In4族的Ⅰ类整合子上,本研究中的2个新整合子命名为In36及In37。结论与qnr相关的质粒介导喹诺酮类耐药性在大肠埃希菌临床分离株中有一定程度流行,这可能是我国细菌对喹诺酮类耐药性上升迅速的原因之一。

关键词：大肠埃希菌质粒介导耐药喹诺酮类 qnr

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满足多款小型化汽油机应用的电动机械增压器性能参数研究

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汽车与新动力 2017年第3期49卷 43-49页

作者： h.h.tran B.Richard K.Gray M.Bassett 陈佳

发动机极度小型化是现代内燃机满足新排放法规的1种措施。发动机小型化程度越高,产生的CO2也越少。如此,发动机就需要更高的增压水平来达到更高的扭矩性能。对于目前的传统增压系统来说,低转速下实现瞬时负荷下的高增压是1个值得关注的... 详细信息

发动机极度小型化是现代内燃机满足新排放法规的1种措施。发动机小型化程度越高,产生的CO2也越少。如此,发动机就需要更高的增压水平来达到更高的扭矩性能。对于目前的传统增压系统来说,低转速下实现瞬时负荷下的高增压是1个值得关注的问题。Aeristech公司已经开发出1款电动机械增压器,与传统涡轮增压器匹配后组成1种新型的两级增压系统,这使得相对简单的小型化汽油发动机可以应用到主流汽车上。鉴于大多数电动增压装置是提供瞬时输出以减轻涡轮迟滞,电动机械增压器更能在稳态下提供空气。因此,电动机械增压器具有双重功能:减轻涡轮迟滞和弥补涡轮增压器或主要增压装置的压气机性能。电动机械增压器既有传统机械增压器的功能,同时又有传统电动增压装置的功能。同时,电动机械增压器可以替代多级涡轮增压器布置中的第一级涡轮增压器。对1款高级的2.0L增压汽油机应用此电动机械增压器进行了仿真,对1款1.2L极度小型化发动机应用此电动机械增压器进行了试验。目前,主要有2种电动机械增压器设计方案:一种使用单独的电动机和控制器(功率电子元件),另一种是将控制器(功率电子元件)和电动机集成为一体。压气机单独作用时有宽广的性能区间和80%的峰值效率,与电动机和控制器(功率电子元件)结合后可以在0.5s以内达到全负荷运行。方案设计时进行了优化使其单位体积最小化和提高其在汽车机舱内布置的灵活性。另外,电动机械增压器已经在MAhLE 3缸直接喷射发动机上进行试验。这款发动机的升功率高达161kW,同时在整个发动机转速区间内扭矩曲线大体上都是平坦的。

关键词：电动机械增压器小型化性能直接喷射

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