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试验台的三相交流传动技术

大功率变流技术 1994年第6期 15-20页

作者： f.unger-Weber 王渤洪德

系统试验能显著加快机车动车电气传动装置的开发和试验,并改进质量。为此在亨尼希斯多夫建造了用于所有铁路电流制的多功能系统试验台,另一辅助手段是用NETASIM模拟系统的交流器系统的数字模拟。本文对120002机车水冷传动装置的系统试... 详细信息

系统试验能显著加快机车动车电气传动装置的开发和试验,并改进质量。为此在亨尼希斯多夫建造了用于所有铁路电流制的多功能系统试验台,另一辅助手段是用NETASIM模拟系统的交流器系统的数字模拟。本文对120002机车水冷传动装置的系统试验结果作了介绍并与模拟结果作了比较。

关键词：试验台机车动车传动装置模拟试验

On dogs, people, and a rabies epidemic: results from a sociocultural study in Bali, Indonesia

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Infectious Diseases of Poverty 2015年第1期4卷 239-256页

作者： Maria Digna Winda Widyastuti Kevin Louis Bardosh Sunar C Basri E Basuno A.Jatikusumah R.A.Arief A.A.G.Putra A.Rukmantara A.T.S.Estoepangestie I.Willyanto I.K.G.Natakesuma I.P.Sumantra D.Grace f.unger J.Gilbert Center for Indonesian Veterinary Analytical Studies BogorIndonesia School of Social and Political Science The University of EdinburghEdinburghUK faculty of Veterinary Medicine Bogor Agricultural UniversityBogorIndonesia Center for Socio Economic and Agricultural Policy Studies Ministry of AgricultureBogorIndonesia Disease Investigation Centre Denpasar Ministry of AgricultureDenpasarIndonesia Edelman Indonesia JakartaIndonesia faculty of Veterinary Medicine Airlangga UniversitySurabayaIndonesia InI Veterinary Service SurabayaIndonesia Bali Provincial Livestock and Animal Health Services Office DenpasarIndonesia International Livestock Research Institute NairobiKenya

Background:Previously free of rabies,Bali experienced an outbreak in 2008,which has since caused a large number of human *** response,both mass dog culling and vaccination have been *** order to assess potential community-driven interventions for optimizing rabies control,we conducted a study exploring the relationship between dogs,rabies,and the Balinese *** objectives of this study were to:i)understand the human-dog relationship in Bali;ii)explore local knowledge,attitudes,and practices(KAPs)relating to rabies;and iii)assess potential community-driven activities to optimize rabies control and ***:Conducted between february and June 2011,the study combined a questionnaire(n=300;CI=95%;error margin=5%)and focus group discussions(fGDs)in 10 villages in the Denpasar,Gianyar,and Karangasem *** questionnaire included a Likert scale to assess community knowledge and *** the knowledge assessment,three points were given for a correct answer,while wrong answers and uncertain answers were given zero *** the attitudes assessment,three points were given for a positive answer,two points for a neutral answer,and one point for a negative *** knowledge was categorized as good(score>40),fair(score 20–40),or poor(score26),neutral(score 13–26),or negative(scoref ***-gender fGDs in each sub-village(banjar)were conducted,each involving 7–15 participants to complement the questionnaire *** a follow-up research trip in mid-2013,the data analysis was triangulated and validated using semi-structured *** data were analyzed descriptively using SPSS 17.0,while qualitative data from interviews and fGDs were analyzed manually according to accepted methods of coding and memo *** chi-square test was then used to analyze the statistical rel

关键词： Bali Rabies Sociocultural KAPs Community-driven activities

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凸点载带自动焊接工艺(BTAB)实用指南

现代雷达 1981年第2期 108-117页

作者： J.W.Kanz G.W.Braun R.f.unger 王宝善

在混合微电路制造中已经用过好几种群焊接技术来取代线焊法,但至今还没有一种达到普遍接受程度。近几年来,载带技术,典型的称为载带自动焊接工艺(简称 TAB 工艺),获得人们的重视。凸点载带自动焊接工艺(简称 BTAB 工艺)是一项新的发展,... 详细信息

在混合微电路制造中已经用过好几种群焊接技术来取代线焊法,但至今还没有一种达到普遍接受程度。近几年来,载带技术,典型的称为载带自动焊接工艺(简称 TAB 工艺),获得人们的重视。凸点载带自动焊接工艺(简称 BTAB 工艺)是一项新的发展,它除了保留常规 TAB 工艺的优点外,还具有自己的特色,能与常规铝金属化集成电路芯片很好的配合。本文从混合微电路生产实际和性能角度出发来介绍 BTAB 工艺目前的发展情况。

关键词：载带引线 BTAB 凸点自动焊接工艺

Control and vibration analyses of a sandwich doubly curved micro-composite shell with honeycomb, truss, and corrugated cores based on the fourth-order shear deformation theory

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Applied Mathematics and Mechanics(English Edition) 2024年第10期45卷 1773-1790页

作者： f.SHIRDELAN M.MOHAMMADIMEHR f.BARGOZINI Department of Solid Mechanics Faculty of Mechanical Engineering University of Kashan

Curved shells are increasingly utilized in applied engineering due to their shared characteristics with other sandwich structures, flexibility, and attractive appearance. However, the inability of controlling and regulating vibrations and destroying them afterward is a challenge to scientists. In this paper, the curve shell equations and a linear quadratic regulator are adopted for the state feedback design to manage the structure vibrations in state space forms. A five-layer sandwich doubly curved micro-composite shell, comprising two piezoelectric layers for the sensor and actuator, is modeled by the fourth-order shear deformation theory. The core(honeycomb, truss, and corrugated) is analyzed for the bearing of transverse shear forces. The results show that the honeycomb core has a greater effect on the vibrations. When the parameters related to the core and the weight percentage of graphene increase, the frequency increases. The uniform distribution of graphene platelets results in the lowest natural frequency while the natural frequency increases. furthermore, without taking into account the piezoelectric layers,the third-order shear deformation theory(TSDT) and fourth-order shear deformation theory(fOSDT) align closely. However, when the piezoelectric layers are incorporated,these two theories diverge significantly, with the frequencies in the fOSDT being lower than those in the TSDT.

关键词： 74f15 corrugate core doubly curved shell honeycomb micro-composite O343 truss vibration and control

Bolstering integrity in environmental data science and machine learning requires understanding socioecological inequity

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frontiers of Environmental Science & Engineering 2024年第5期18卷 171-179页

作者： Joe f.Bozeman III School of Civil and Environmental Engineering Georgia Institute of TechnologyAtlantaGA30332USA School of Public Policy Georgia Institute of TechnologyAtlantaGA30332USA

Socioecological inequity in environmental data science—such as inequities deriving from data-driven approaches and machine learning(ML)—are current issues subject to debate and *** is growing consensus around embedding equity throughout all research and design domains—from inception to administration,while also addressing procedural,distributive,and recognitional ***,practically doing so may seem onerous or daunting to *** current perspective helps to alleviate these types of concerns by providing substantiation for the connection between environmental data science and socioecological inequity,using the Systemic Equity framework,and provides the foundation for a paradigmatic shift toward normalizing the use of equity-centered approaches in environmental data science and ML *** the integrity of environmental data science and ML is just beginning from an equity-centered tool development and rigorous application *** this end,this perspective also provides relevant future directions and challenges by overviewing some meaningful tools and strategies—such as applying the Wells-Du Bois Protocol,employing fairness metrics,and systematically addressing irreproducibility;emerging needs and proposals—such as addressing data-proxy bias and supporting convergence research;and establishes a ten-step path ***,the work that environmental scientists and engineers do ultimately affect the well-being of us all.

关键词： Equity Bias Machine Learning Data Science Justice Systemic Equity

Premature axon-oligodendrocyte interaction contributes to stalling of experimental axon regeneration after injury to the white matter

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Neural Regeneration Research 2024年第3期19卷 469-470页

作者： Ephraim f.Trakhtenberg Department of Neuroscience University of Connecticut School of MedicineFarmingtonCTUSA

Studies from nearly 3 decades ago suggested that,in the central nervous system(CNS),myelination of axons by oligodendrocytes not only helps improve axonal conductivity but also stabilizes circuitry(Colello and Schwab,1994).Over the years,myelin sheaths produced by oligodendrocytes have been found to contain multiple molecules that are inhibitory to axonal growth(e.g.,MAG,NogoA,OMgp,Semaphorins)(Yiu and He,2006;Silver et al.,2014).After white matter injury in the adult CNS,myelin debris from damaged axons and dead oligodendrocytes accumulates in the forming glial scar and exposes these myelin-associated axon growth-inhibitory molecules to the injured axonal stumps,thereby contributing to the inhibition of axonal *** development,CNS axons reach their postsynaptic targets and stop growing before oligodendrocytes appear and myelinate them(foran and Peterson,1992;Dangata et al.,1996).Therefore,myelin-associated axon growth-inhibitory molecules interacting with already grown axons during myelination were thought to block axons from promiscuous sprouting and miswiring,thereby stabilizing neural circuitry in the CNS(Colello and Schwab,1994).

关键词： thereby white injury

An unexpected cellular fountain of youth:platelets provide factors rejuvenating brain functions

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Signal Transduction and Targeted Therapy 2024年第1期9卷 16-18页

作者： Harald f.Langer Department of Cardiology AngiologyHaemostaseology and Medical Intensive CareUniversity Medical Centre MannheimMedical Faculty MannheimHeidelberg UniversityMannheimGermany German Centre for Cardiovascular Research(DZHK) Partner Site Heidelberg/MannheimMannheimGermany European Center for Angioscience Medical Faculty MannheimHeidelberg UniversityMannheimGermany Cardiovascular systems biology Medical Clinic IUniversity Heart Center LübeckLübeckGermany

In a recent manuscript published in Nature,Schroer et *** that platelets and in particular platelet derived Pf-4(CXCL4)are a novel factor,which can rejuvenate the mammalian neuronal system.1 These findings have the potential to trigger an entire new field of research opening new platelet-derived candidate effector molecules for supporting regeneration.

关键词： supporting platelets finding

The viscous strip approach to simplify the calculation of the surface acoustic wave generated streaming

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Applied Mathematics and Mechanics(English Edition) 2024年第4期45卷 711-724页

作者： f.JAZINI DORCHEH M.GHASSEMI fuel Cells and Nano Systems(fCNS)Laboratory Department of Mechanical EngineeringK.N.Toosi University of TechnologyTehran 19697Iran

In recent decades,the importance of surface acoustic waves,as a biocompatible tool to integrate with microfluidics,has been proven in various medical and biological *** numerical modeling of acoustic streaming caused by surface acoustic waves in microchannels requires the effect of viscosity to be considered in the equations which complicates the *** this paper,it is shown that the major contribution of viscosity and the horizontal component of actuation is concentrated in a narrow region alongside the actuation *** the inviscid equations are considerably easier to solve,a division into the viscous and inviscid domains would alleviate the computational load *** particles'traces calculated by this approximation are excellently alongside their counterparts from the completely viscous *** is also shown that the optimum thickness for the viscous strip is about 9-fold the acoustic boundary layer thickness for various flow patterns and amplitudes of actuation.

关键词： surface acoustic wave microfluidics numerical simulation particle tracing acoustic streaming

Langmuir-Schaefer film Investigation and Density functional Theory Band Gap Calculations of Calix[n]arene-Para-Aminobenzoic Acid for Drug Nanosensor Application

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Journal of Wuhan University of Technology(Materials Science) 2024年第5期39卷 1311-1318页

作者： WONG Yeong Yi f L Supian A Radzwan M Musa N f N Abd Karim Department of Physics Sultan Idris Education UniversityTanjong Malim 35900Malaysia Department of Chemistry Sultan Idris Education UniversityTanjong Malim 35900Malaysia

Calix[n]arenes was utilized to detect PABA,the primary sunscreen *** study investigates the interaction of calix[4]arene(C4),calix[6]arene(C6),and PABA using the Langmuir method and first-principle density functional theory(DfT).Using the Langmuir-Schaefer(LS)technique,an ultrathin film composed of calix[n]arenes and their complexes with PABA was deposited on various *** on the Langmuir study,the PABA molecule was bonded to the lower rims of both C4 and C6 with the host-guest ratio of 1:*** of the LS films formed were then characterized by ultravioletvisible spectroscopy(UV-Vis),fourier-transform infrared spectroscopy(fTIR)and carbon,hydrogen,nitrogen,sulfur elemental analyzer(CHNS).The band gap reduction obtained in the DfT study denotes the charge transfer interaction with promising reactivity between the calix[n]arenes and *** sensing of PABA by C4 and C6 is successful based on the formation of bonding between them due to the hosts’effective trapping *** outcomes of this study could be applied to drug delivery systems for future pharmaceutical and medical applications.

关键词： calix[n]arenes band gap density functional theory Langmuir-Schaefer PABA sensor