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Impact of chosen force field. and.applied.load.on thin film lubrication

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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.Ed.cation Ho Chi Minh City 800010Vietnam

The rapid.d.velopment of molecular d.namics(Md.simulations,as well as classical and.reactive atomic potentials,has enabled.tribologists to gain new insights into lubrication performance at the fund.mental ***,the impact of ad.pted.potentials on the rheological properties and.tribological performance of hyd.ocarbons has not been researched.*** extensive stud. 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.*** d.gree of ord.ring structure also changed.with the applied.load.but rather *** was also significantly d.pend.nt on the surface *** chosen FFs significantly influenced.the lubrication performance,rheological properties,and.molecular *** ad.ptive intermolecular reactive empirical bond.ord.r(AIREBO)potential resulted.in more significant liquid.like behaviors,and.the smallest velocity slip,d.gree of ord.ring structure,and.shear stress were compared.using the optimized.potential for liquid.simulations of united.atoms(OPLS‐UAs),cond.nsed.phase optimized.molecular potential for atomic simulation stud.es(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 d.crease in velocity slip with an increase in the surface potential parameterζ,remained.conserved.for all chosen FFs,thus ind.cating that the proposed.surface potential parameterζfor the COMPASS FF can be verified.for a wid. range of atomic mod.ls.

关键词： molecular d.namics simulation force field. applied.load tribofilm hyd.ocarbon

Green build.ng research in South Africa:A scoping review and.future road.aps

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Energy and.Built Environment 2024年第2期5卷 316-335页

作者： Favour d.Agbajor Mod.pe Cecilia Mewomo d.partment of Construction Management and.Quantity Surveying Durban University of TechnologySteve Biko CampusDurban4001South Africa

The construction ind.stry is recognised.to pose serious environmental threats d.e to its anthropogenic *** confront this challenge,green build.ng has been famed.as an auspicious strategy to alleviate energy-related.carbon emissions alongsid. climate change ***,it has birthed.d.verse empirical stud.es and.holistic reviews by the research ***,these previous stud.es have been carried.out from a global and.continental viewpoint regard.ess of the green build.ng d.velopment specifically in emerging *** present stud. seeks to fill the sparse research upshots on the synthesis of green build.ng research at the country level with core focus on South *** this light,the current stud. provid.s a scoping overview of the intellectual exploration on green build.ng research in the South African *** stud.’s find.ngs highlight the varying growth regard.ng the subject matter,the d.ivers,d.awbacks,and.socio-economic issues confronting in d.veloping green build.ng projects in the *** optimize the ad.ancement of green build.ng in the region,this stud. recommend. the implementation of financing schemes,utilization of ad.anced.d.gital technologies,and.promotion of green and.sustainable build.ng curricula across the institutions as well as post-occupancy-related.stud.es within the green build.ng spectrum toward. a safe and.salutogenic built-environment in the country.

关键词： Green build.ng Sustainable construction Energy efficiency Review South Africa

Commentary on“The d.terministic cond.tion for the ground.reaction force acting point on the combined.knee valgus and.tibial internal rotation moments in the early phase of cutting maneuvers in female athletes”

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Journal of Sport and.Health Science 2024年第3期13卷 373-375页

作者： Nathan d.Schilaty Nathaniel A.Bates d.partment of Neurosurgery&Brain Repair University of South FloridaTampaFL 33620USA d.partment of Med.cal Engineering University of South FloridaTampaFL 33620USA Center for Neuromusculoskeletal Research University of South FloridaTampaFL 33620USA d.partment of Orthopaed.cs The Ohio State University Wexner Medical CenterColumbusOH 43210USA

*** For d.cad.s,substantial d.sagreement has persisted.as to whether d.namic knee valgus is the cause of the majority of anterior cruciate ligament(ACL)injuries or rather the result of the ACL rupture.1 Consequently,great effort and.expense has gone into capturing 3-d.mensional kinetics and.kinematics from live athletes to d.ive in vitro and.in silico mod.ls of ACL injury in ord.r to elucid.te the actual mechanism of injury,as these factors have been d.monstrated.to be surrogates of intraarticular structural load.ng on the ACL.2,3 The elucid.tion of injury mechanisms for non-contact ACL injuries is of great med.cal value as such knowled.e consequently permits quantified.examination and.valid.tion of interventions and.their respective effectiveness in both prevention and.rehabilitation of these traumatic knee injuries.

关键词： injuries knee prevention

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基于LTCC的3d.质集成低通滤波器

微波学报 2024年第4期40卷 69-73页

作者：曾竞涛沈斌徐金旭沓世我章秀银华南理工大学电子与信息学院广州510641 广东风华高新科技股份有限公司肇庆526060 新型电子元器件关键材料与工艺国家重点实验室肇庆526060

在射频应用中,低温共烧陶瓷(LTCC)技术是关键技术路线之一,然而使用单一介质的LTCC技术的性能很局限。为此,文中对基于LTCC的3d.质集成技术进行研究,通过调节流延配方、烧结速度、烧结温度、保温时间等工艺参数,设计异质匹配共烧的烧... 详细信息

在射频应用中,低温共烧陶瓷(LTCC)技术是关键技术路线之一,然而使用单一介质的LTCC技术的性能很局限。为此,文中对基于LTCC的3d.质集成技术进行研究,通过调节流延配方、烧结速度、烧结温度、保温时间等工艺参数,设计异质匹配共烧的烧结行为控制、界面相容性和组织性能调控方案,开发出稳定可靠的LTCC集成工艺,给出基于LTCC异质集成的器件仿真设计、3d.成制备方法,并制作了一款共烧界面结合完好、性能优越的LTCC异质集成低通滤波器进行验证。验证结果表明,该异质集成技术的瓷粉性能指标和可加工特性满足使用要求,预期能够得到广泛应用。

关键词：低温共烧陶瓷 3d.质集成低通滤波器

Impact of interfacial tension on oil-water flow in a narrow gap

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Petroleum Research 2024年第2期9卷 219-227页

作者： Salim Raza Ian d.Gates Saira Sherin University of Engineering and.Technology PeshawarPakistan d.partment of Chemical and.Petroleum Engineering Schulich School of EngineeringUniversity of CalgaryCanada

Numerous researchers have examined.the co-current flow of oil-water and.aqueous solutions containing polymers and.surfactants in thin gaps for oil *** some have focused.on charges and.forces at the interfaces of oil-surfactant solutions d.ring *** stud. of flow structures,interface behavior,and.relative permeabilities of oil and.aqueous phases of surfactant flow through thin gaps has been less *** the first time,this research aims to comprehensively investigate the flow of oil-water and.oil-surfactant solutions through a thin gap(Hele-Shaw cell)with a particular focus on the impact of sod.um d.d.cyl sulfate(Sd.).The experiments reveal that Sd. forms an emulsion near the oil-water interface,capturing oil d.oplets and.enabling their flow along with the Sd. *** stud.es confirm this,showing that when Sd. contacts oil,it creates channels through the oil phase,lead.ng to the accumulation and.d.vision of oil into small round.shaped.d.oplets,resulting in an oil-in-water *** ad.ition of Sd. to the injecting water significantly enhances relative permeabilities,lead.ng to a remarkable 90%increase in oil recovery from the *** research suggests that the optimal Sd. concentration range for maximum oil recovery is between 1.5 and.2 wt%,as it achieves the minimum interfacial tension between oil and.water.

关键词： Surfactant Co-current flow Narrow gap Interface interactions Relative permeability

Oligod.nd.octyes:the forgotten players of d.abetes pathophysiology

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Neural Regeneration Research 2024年第11期19卷 2349-2350页

作者： Juan Antonio López-Villod.es Beatriz García-d.az d.partamento Fisiología Humana Histología HumanaAnatomía Patológica y Educación Física y DeportivaFacultad de MedicinaUniversidad de MálagaMálagaSpain UGC Neurociencia.Instituto d. Investigación Bioméd.ca d. Málaga y Plataforma en Nanomed.cina(IBIMA Plataforma Bionand. MálagaSpain

Oligod.nd.ocytes(OLs),glial cells that provid. myelin sheaths to axons in the central nervous system(CNS),have a d.al ***,this myelin fatty cover around.the axons protects the nerves and.is crucial for the saltatory propagation of action *** and.not less important,OLs provid. trophic support to neurons and.***,OL metabolism is important for OL well-being and.the proper accomplishment of their functions,and.OL metabolism energetics d.rectly affect the energy metabolism of neighboring neurons.

关键词： metabolism nerves myelin

Ad.erence to Physical Measures d.ring the SARS-COV2 Pand.mic by Haemod.alysis Patients in a Burkina Faso Tertiary Hospital: A Cross-Sectional Survey

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Open Journal of Nephrology 2024年第3期14卷 375-385页

作者： Bonzi Y. Juste Zoehinga Patrice Sourabie Oumar Kabore d. d.eud.nne Hien Siebou Sawad.go Amid.u Coulibaly Gerard d.partement of Nephrology and.Haemod.alysis Yalgado Oudraogo Teaching Hospital Ouagadougou Burkina Faso Health Sciences Training and.Research Unit Joseph KI-ZERBO University d.partement of Nephrology and.Haemod.alysis Ouahigouya Regional Teaching Hospital Ouahigouya Burkina Faso d.partement of Psychiatry Souro Sanou Teaching Hospital Bobo Dioulasso Burkina Faso d.partement of Med.cal Oncology Yalgado Oudraogo Teaching Hospital Ouagadougou Burkina Faso Health Sciences Training and.Research Unit of Ld. Bernard.Oud.aogo University Ouahigouya Burkina Faso

Context: COVId.19 can spread.rapid.y in haemod.alysis centres, lead.ng to fatal outcomes. Implementing physical measures is crucial in limiting the spread.of infection. Aims: To assess ad.erence to physical measures against SARS-Cov2 in haemod.alysis patients. Method. and.Material: From 13 to 19 July 2021, we ad.inistered.the questionnaire to haemod.alysis patients d.ring or immed.ately after the d.alysis session. The d.pend.nt variables were ad.erence to wearing masks, hand.washing outsid. the d.alysis centre, social d.stancing of at least 1.5 meters, and.cough and.sneeze hygiene. Statistical Analysis Used. d.ta were analyzed.using Epi info software;d.scriptive statistics were presented.as mean, head.ount, and.percentage;related.factors were d.termined.by multi-logistic regression. The significance level was 5%. The Health Research Ethics Committee approved.the research protocol. Results: 142 patients were includ.d.(mean age: 42.5 ± 14 years). Wearing masks, hand.washing, social d.stancing, and.coughing and.sneezing hygiene were observed.by 88%, 75%, 47%, and.60% of patients, respectively. Conclusion: Wearing masks was the most respected.physical measure, while social d.stancing was the least respected.

关键词： Physical Measures COVId.19 Haemod.alysis SARS-COV2 Tertiary Hospital Sub-Saharan Africa

Global patterns and.ecological d.ivers of taxonomic and.phylogenetic end.mism in angiosperm genera

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Plant d.versity 2024年第2期46卷 149-157页

作者： Hong Qian Brent d.Mishler Jian Zhang Shenhua Qian Research and.Collections Center Illinois State Museum1011 East Ash StreetSpringfieldIL 62703USA University and.Jepson Herbaria Department of Integrative BiologyUniversity of CaliforniaBerkeleyCA 94720-2465USA Center for Global Change and.Complex Ecosystems Zhejiang Tiantong Forest Ecosystem National Observation and Research StationSchool of Ecological and Environmental SciencesEast China Normal UniversityShanghai 200241China Shanghai Institute of Pollution Control and.Ecological Security Shanghai 200092China Key Laboratory of the Three gorges Reservoir Region's Eco-Environment Ministry of EducationChongqing UniversityChongqing 400045China

End.mism of lineages lies at the core of und.rstand.ng variation in community composition among geographic regions because it reflects how speciation,extinction,and.d.spersal have influenced.current ***,we investigated.geographic patterns and.ecological d.ivers of taxonomic and.phylogenetic end.mism of angiosperm genera across the *** id.ntify centers of paleo-end.mism and.neo-end.mism of angiosperm genera,and.show that they are mostly located.in the Southern Hemisphere in tropical and.subtropical regions,particularly in Asia and.*** categories of phylogenetic end.mism centers can be d.fferentiated.using current climate *** climate,historical climate change,and.geographic variables together explained.80%of global variation in taxonomic and.phylogenetic end.mism,while 42-46%,1%,and.15%were ind.pend.ntly explained.by these three types of variables,*** our find.ngs show that past climate change,current climate,and.geography act together in shaping end.mism,which are consistent with the find.ngs of previous stud.es that higher temperature and.topographic heterogeneity promote *** stud. showed.that many centers of phylogenetic end.mism of angiosperms,includ.ng regions in Amazonia,Venezuela,and.west-central tropical Africa that have not previously been id.ntified.as biod.versity hotspots,are missed.by taxon-based.measures of end.mism,ind.cating the importance of includ.ng evolutionary history in biod.versity assessment.

关键词： Angiosperm Current climate End.mism Historical climate change Topographic heterogeneity

Influence of Heavy Fuel Oil on the Thermo-Physical and.Erod.bility Properties of Earthen Materials

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Journal of Minerals and.Materials Characterization and.Engineering 2024年第1期12卷 37-48页

作者： Ohind.mi G. Yameogo d.nzala d. Some Souleymane Oued.aogo Philbert Nshimiyimana Sié Kam d.eud.nné J. Bathiebo Laboratoire d.Energies Thermiques Renouvelables (L.E.T.RE) Unité de Formation et de Recherche en Sciences Exactes et Appliquées (UFR-SEA) University Joseph Ki-Zerbo of Ouagadougou Ouagadougou Burkina Faso Ministry in Charge of Infrastructures Ouagadougou Burkina Faso d.partment of Civil Engineering and.Architectural d.sign Graduate School of Science and Engineering Saga University Saga Japan Laboratoire Eco-Matériaux et Habitats d.rables (LEMHad. Institut International d’Ingénierie de l’Eau et de L’Environnement (Institut 2iE) Ouagadougou Burkina Faso

This stud. focuses on the use of heavy fuel oil in construction material in Burkina Faso. Its mixture with silty or clayey soil is used.as a coating to reinforce the walls of raw earth constructions which are very sensitive to water. The interest of this stud. is to d.termine erod.bility, water content, while highlighting the influence of the porosity accessible by water on thermal d.ffusion in construction material containing heavy fuel oil. The heavy fuel oil was mixed.with a silty-clayey soil, in d.fferent proportions, and.water to make bricks samples on which tests were carried.out. At the end.of the experimental tests, it appears that the water content increases grad.ally, but not significantly with the ad.ition of heavy fuel oil, which causes a slight increase in the speed.of heat propagation through the material with red.ced.porosity, particularly those containing higher quantities of heavy fuel oil. Conversely, we note a good.performance of heavy fuel oil in terms of water resistance properties such as porosity accessible by water and.erod.bility. This allows us to conclud. that the mixture of heavy fuel oil and.silty-clayey soil used.as a coating material could.greatly red.ce water infiltration into the walls of housing constructions with raw earthen materials.

关键词： Porosity Accessible by Water Erod.bility Water Content Thermal d.ffusion