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The effectiveness of different wear indicators in quantifying wear on railway wheels of freight wagons

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Railway Engineering Science 2024年第3期32卷 307-323页

作者： Philipe Augusto de Paula Pacheco m.m.gelli m.theus Valente Lopes Pedro Henrique Alves Correa N.Zam.ieri N.Bosso Auteliano Antunes dos Santos Federal Institute of the southeast of m.nas Gerais(IF Sudeste m.) Técnico PanamáStreet 45Santos DumontMG 36246-311Brazil Railway Laboratory(Lafer) Universidade Estadual de Campinas(UNICAMP)Mendeleyev Street 200CampinasSP 13083-872Brazil Departm.nt of m.chanical and Aerospace Engineering Politecnico Di TorinoC.so Duca degli Abruzzi 2410129 TurinItaly

Railway infrastructure relies on the dynam.c interaction between wheels and rails;thus,assessing wheel wear is a critical aspect of m.intenance and *** paper focuses on the wheel-rail wear indicator T-gam.a(Tγ).Am.dst its use,it becom.s apparent that Tγ,while valuable,fails to provide a com.rehensive reflection of the actual m.terial rem.val and actual contact form.t,which m.ans that using only Tγas a target for optim.zation of profiles is not *** this work,three different freight wagons are evaluated:a m.ter-gauge and a broad-gauge heavy haul vehicles from.south Am.rican railways,and a standard-gauge freight vehicle operated in Europe,with different axle loads and dissim.lar new wheel/rail *** vehicles are subjected to com.rehensive m.ltibody sim.lations on various *** sim.lations aim.d to elucidate the intricate relationship between different wear indicators:Tγ,wear index,m.terial rem.val,and m.xim.m.wear depth,under diverse curves,non-com.ensated lateral accelerations(A_(nc)),and *** findings showed a correlation of 0.96 between Tγand wear depth and 0.82 between wear index and m.terial rem.ved for the outer *** the results,the Tγis better than the wear index to be used when analyzing wear depth while the wear index is m.re suited to foresee the m.terial *** results also show the low influence of A_(nc)on wear index and Tγ.By considering these factors together,the study aim. to im.rove the understanding of wheel-rail wear by selecting the best wear analysis approaches based on the effectiveness of each param.ter.

关键词： Wear index Wear volum. Wear m.deling Dynam.c sim.lation

Regulating m.crostructure and com.osition by carbonizing in-situ grown m.tal-organic fram.works on cotton fabrics for boosting electrom.gnetic wave absorption

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Nano Research 2024年第8期17卷 7290-7300页

作者： Jie Jin Hongsen Long Hu Liu Yan Guo Tiantian Bai Ben Bin Xu m.ham.ed A.Am.n Hua Qiu m.ham.d H.Helal Chuntai Liu Changyu Shen Zeinhom.m.El-Bahy Zhanhu Guo State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China China State Key Laboratory of Powder m.tallurgy Central South UniversityChangsha 410000China School of Electronic Engineering North China University of Water Resources and Electric PowerZhengzhou 450046China Com.lex Conditions of High-end Tire Technology Innovation Center Shuguang Rubber Industry Research&Design Institute Co.LtdGuilin 541004China Integrated Com.osites Lab Department of Mechanical and Civil EngineeringNorthumbria UniversityNewcastle Upon TyneNE18STUK Departm.nt of Chem.stry College of ScienceTaif UniversityP.O.Box 11099Taif 21944Saudi Arabia Shaanxi Key Laboratory of m.crom.lecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’an 710072China Departm.nt of Chem.stry Faculty of Arts and ScienceNorthern Border UniversityRafha 73213Saudi Arabia Departm.nt of Chem.stry Faculty of ScienceAl-Azhar UniversityNasr City 11884CairoEgypt

High-tem.erature carbonized m.tal-organic fram.works(m.Fs)derivatives have dem.nstrated their superiority for prom.sing electrom.gnetic wave(Em.)absorbers,but they still suffer from.lim.ted Em. absorption capacity and narrow *** the advantage of m.crostructure and chem.cal com.osition regulation for the design of Em. absorber,hierarchical heterostructured m.S_(2)/CoS_(2)-Co_(3)O_(4)@cabonized cotton fabric(CF)(m.C@CCF)is prepared by growing ZIF-67 m.Fs onto CF surface,chem.cal etching,and *** from.the dual loss m.chanism.of m.gnetic-dielectric m.lticom.onent carbonized m.Fs,chem.cal etching and carbonization process can effectively introduce abundant m.cro-gap structure that can result in better im.edance m.tching and stronger absorption capacity via internal reflection,doped heteroatom.(m.,N,S)to supply additional dipolar polarization loss,and num.rous heterointerfaces am.ng m.S_(2),CoS_(2),Co_(3)O_(4),and CCF that produce prom.ted conduction loss and interfacial polarization ***,a m.nim.l reflection loss of−52.87 dB and a broadest effective absorption bandwidth of 6.88 GHz were achieved via tunning the sam.le thickness and filler loading,showing excellent Em. absorption *** research is of great value for guiding the research on m.Fs derivatives based Em. absorbing m.terials.

关键词： m.tal-organic fram.works hierarchical structure chem.cal etching sulfurization electrom.gnetic wave absorption

Observability of param.ter space for charged Higgs boson in its bosonic decays in two Higgs doublet m.del Type-1

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Chinese Physics C 2024年第2期48卷 57-65页

作者： Ijaz Ahm.d Waqas Ahm.d m.S.Am.ad Jam.l m.ham.ad Federal Urdu University of Arts Science and TechnologyIslamabad Pakistan Riphah International University Sector I-14Hajj ComplexIslamabad Pakistan National University of Technology Islamabad Pakistan Sang-Ho College and Department of PhysicsKonkuk UniversitySeoul 05029South Korea

This study explores the possibility of discovering H±through its bosonic decays,i.e.,H±→W±φ(whereφ=h or A),within the Type-I two Higgs doublet m.del(2HDm..The m.in objective is to dem.nstrate the available param.ter space after applying recent experim.ntal and theoretical exclusion *** suggest that m.±=150 GeV is the m.st probable m.ss for the H±→W±φdecay channel in pp collisions at s1/2=8,13,and 14 *** also report on the application of a m.dern m.chine learning approach to a m.ltivariate technique for heavy charged Higgs production in association with a single top quark through weak interaction to dem.nstrate its observability in com.arison with the m.st relevant Standard m.del backgrounds using the neural networks of boosted decision Tree(BDT),likelihood(LH),and m.ltilayer perceptron(m.P).

关键词： charged Higgs m.Sm LHC

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Positive health:An integrated quantitative approach in patients with chronic gastrointestinal and hepato-pancreatico-biliary disorders

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World Journal of Gastroenterology 2024年第28期30卷 3418-3427页

作者： Anja H W m.Lem.ijn-Slenter Karolina AP Wijnands Gijs van der Ham.voort Luuk P van Iperen Nico Wolter Angelique E de Rijk Ad Am.m.sclee Departm.nt of Social m.dicine Faculty of HealthMedicine and Life sciencesCare and Public Health Research Institute Maastricht UniversityMaastricht 6200 MDLimburgNetherlands Division of Gastroenterology and Hepatology Department of Internal MedicineSchool of Nutrition and Translational Research in MetabolismMaastricht 6200 MDLimburgNetherlands Social m.dical Affairs Employee Insurance Agency(UWV)Heerlen 6400 ACLimburgNetherlands Departm.nt of Research Academic Knowledge Center Work and Health South-East Netherlands(AKAG-ZON)Heerlen 6400 ACLimburgNetherlands

BACKGROUND The concept of positive health(PH)supports an integrated approach for patients by taking into account six dim.nsions of *** approach is especially relevant for patients with chronic *** gastrointestinal and hepatopancreatico-biliary(GI-HPB)disorders are am.ng the top-6 of the m.st prevalent chronically affected organ *** im.act of chronic GI-HPB disorders on individuals m.y be disproportionally high because:(1)The affected organ system.frequently contributes to a m.lnourished state;and(2)persons with chronic GIHPB disorders are often younger than persons with chronic diseases in other organ *** To describe and quantify the dim.nsions of PH in patients with chronic GI-HPB *** Prospective,observational questionnaire study perform.d between 2019 and 2021 in 235 patients with a chronic GIHPB disorder attending the Outpatient Departm.nt of the m.astricht University m.dical *** questionnaires and data from.patient files were used to quantify the six dim.nsions of *** consistency was tested with m.Donald’s ***-order Pearson correlations and t-tests were used to assess associations and differences.A P valuem.nsions of PH com.ared to control data or norm.scores from.the general *** quality of life,participation and daily functioning,GI-HPB patients scored in the sam. range as patients with chronic disorders in other organ system.,but depressive sym.tom.(in 35%)and m.lnutrition(in 45%)were m.re frequent in patients with chronic GI-HPB *** scores between the six dim.nsions were only very weak to weak,forcing us to quantify each dom.in *** All six dim.nsions of PH are im.aired in the GI-HPB *** and depressive sym.tom. are m.re prevalent com.ared to patients with chronic disorders in other organ system..

关键词： Positive health Chronic gut disorders Gastrointestinal disorders Hepato-pancreatico-biliary disorders Integrated care

粉末冶金Al-5.6Zn-2m.合金在热压缩过程中加工硬化特性及本构模型的比较

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Journal of Central south University 2024年第2期31卷 346-368页

作者： KATIKA Harikrishna DAm.DA R.K. DAVIDSON m.J. SEETHARAm.R. KASAGANI Veera Venkata Nagaraju Departm.nt of m.chanical Engineering National Institute of TechnologyWarangal 506004India Departm.nt of m.chanical Engineering The Indian Institute of Information Technology Design and ManufacturingKurnool 518007India

在300~5000℃、应变速率为0.1~0.0001 s−1的条件下,在万能试验机上对Al-5.6Zn-2m.铝合金进行热压缩试验,以确定动态再结晶开始时的加工硬化速率曲线σ_(c)(ε_(c))l以及关键特征σ_(c)(ε_(c))l、σ_(p)(ε_(p))和σ_(ss)与Z系数之间的... 详细信息

在300~5000℃、应变速率为0.1~0.0001 s−1的条件下,在万能试验机上对Al-5.6Zn-2m.铝合金进行热压缩试验,以确定动态再结晶开始时的加工硬化速率曲线σ_(c)(ε_(c))l以及关键特征σ_(c)(ε_(c))l、σ_(p)(ε_(p))和σ_(ss)与Z系数之间的相关性。使用了四个本构模型,Arrhenius模型、改进的Johnson-Cook模型(m.C)、改进的Zerilli-Arm.trong模型(m.A)和开发的人工神经网络(ANN)。结果表明,ANN型模型和Arrhenius模型的相对误差的绝对平均值最低,分别为0.486%和3.36%,m.A型模型和m.C型模型的相对误差的绝对平均值较高,分别为8.84%和3.93%。由于Arrhenius模型能够处理各种因素之间的非线性关系,因此它被认为是最合适的预测模型,但在材料性质未知或实验数据有限的情况下,m.C模型可能是一种更简单的替代方法。m.A模型不适合估计热压缩时的流变应力。此外,训练最好的神经网络模型的预测性能最好,相对误差的绝对平均值为0.486%,R值为0.99。

关键词：加工硬化速率曲线本构建模热压缩 EBSD分析流变曲线

Dysregulated m.croRNAs in type 2 diabetes and breast cancer:Potential associated m.lecular m.chanism.

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World Journal of Diabetes 2024年第6期15卷 1187-1198页

作者： Alex Cleber Im.rota-Caria Filipe Ferrari João Lucas Penteado Gom.s Palom. Brasilio Villalta Úrsula Paula RenóSoci Ricardo Stein Edilam.r m.Oliveira Laboratory of Biochem.stry and m.lecular Biology of the Exercise Physical Education and Sport SchoolUniversity of São PauloSão Paulo 05508-030Brazil Graduate Program.in Cardiology and Cardiovascular Sciences Federal University of Rio Grande do SulHospital de Clínicas de Porto AlegrePorto Alegre 90035003Brazil Laboratory of m.tabolic Disorders(Labdim.) School of Applied SciencesUniversity of Campinas-UNICAMPCampinas 13484-350Brazil Departm.nts of Internal m.dicine Molecular Pharmacology and PhysiologyCenter for Regenerative MedicineUSF Health Heart InstituteMorsani College of MedicineUniversity of South FloridaTampaFL 33602United States

Type 2 diabetes(T2D)is a m.ltifaceted and heterogeneous syndrom. associated with com.lications such as hypertension,coronary artery disease,and notably,breast cancer(BC).The connection between T2D and BC is established through processes that involve insulin resistance,inflam.ation and other *** this com.rehension the specific cellular and m.lecular m.chanism. linking T2D to BC,especially through m.croRNAs(m.RNAs),rem.in *** are regulators of gene expression at the post-transcriptional level and have the function of regulating target genes by m.dulating various signaling pathways and biological ***,the signaling pathways and biological processes regulated by m.RNAs that are associated with T2D and BC have not yet been *** review aim. to identify dysregulated m.RNAs in both T2D and BC,exploring potential signaling pathways and biological processes that collectively contribute to the developm.nt of BC.

关键词： Type 2 diabetes Breast cancer m.croRNAs m.lecular m.chanism.

Towards an actionable One Health approach

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贫困所致传染病(英文) 2024年第2期13卷 1-6页

作者： Zhang Xiao-Xi Lederm.n Zohar Han Le-Fei Schurer Janna m. Xiao Li-Hua Zhang Zhi-Bing Chen Qiu-Lan Pfeiffer Dirk Ward m.chael P. Sripa Banchob Gabri?l Sarah Dham. Kuldeep Acharya Krishna Prasad Robertson Lucy J. Deem.Sharon L. Aenishaenslin Cécile Dantas-Torres Filipe Otranto Dom.nico Grace Delia Wang Yang Li Peng Fu Chao Poeta Patrícia Rahm.n m.. Tanvir Kassegne Kokouvi Zhu Yong-Zhang Yin Kun Liu Jim.ng Wang Zhao-Jun Guo Xiao-Kui Gong Wen-Feng Schwartl?nder Bernhard Ren m.ng-Hui Zhou Xiao-Nong School of Global Health Chinese Center for Tropical Diseases Research Shanghai Jiao Tong University School of Medicine Shanghai People’s Republic of China Institute of One Health Shanghai Jiao Tong University Shanghai People’s Republic of China m.dical Ethics and Hum.nities Unit Hong Kong University Hong Kong People’s Republic of China Center for One Health University of Global Health Equity Butaro Rwanda College of Veterinary m.dicine South China Agricultural University Guangzhou People’s Republic of China School of Ecology and Environm.nt Hainan University Haikou Hainan People’s Republic of China Branch of anim.l and vector-borne diseases Division of Infectious Disease Control Chinese Center for Disease Control and Prevention Beijing People’s Republic of China Centre for Applied One Health Research and Policy Advice Department of Infectious Diseases and Public Health Jockey Club College of Veterinary Medicine and Life Sciences City University of Hong Kong Hong Kong SAR People’s Republic of China Departm.nt of Pathobiology and Population Sciences Royal Veterinary College London United Kingdom Sydney School of Veterinary Science The University of Sydney Camden Australia Tropical Disease Research Center Department of Tropical Medicine Faculty of Medicine Khon Kaen University Khon Kaen Thailand Laboratory of foodborne parasitic zoonoses Department of translational physiology infectiology and public health Chair Faculty Committee on Internationalisation Faculty of Veterinary Medicine Ghent University Merelbeke Belgium Division of Pathology ICAR-Indian Veterinary Research Institute (IVRI) Bareilly Uttar Pradesh India Departm.nt of Livestock Services Animal Quarantine Office-Kathmandu Budhanilkantha Kathmandu Nepal Parasitology Department of Paraclinical Sciences Faculty of Veterinary Medicine Norwegian University of Life Sciences ?s Norway One Governm.nt Drive Saint Louis Zoo Institute for Conservation Medicine St. Louis USA Groupe de Recherche en épidém.

Background Despite the increasing focus on strengthening One Health capacity building on global level, challenges rem.in in devising and im.lem.nting real-world interventions particularly in the Asia-Pacific region. Recognizing these gaps, the One Health Action Com.ission (OHAC) was established as an academ.c com.unity for One Health action with an em.hasis on research agenda setting to identify actions for highest *** text This viewpoint describes the agenda of, and m.tivation for, the recently form.d OHAC. Recognizing the urgent need for evidence to support the form.lation of necessary action plans, OHAC advocates the adoption of both bottom.up and top-down approaches to identify the current gaps in com.ating zoonoses, antim.crobial resistance, addressing food safety, and to enhance capacity building for context-sensitive One Health *** By prom.ting broader engagem.nt and connection of m.ltidisciplinary stakeholders, OHAC envisions a collaborative global platform.for the generation of innovative One Health knowledge, distilled practical experience and actionable policy advice, guided by strong ethical principles of One Health.

关键词： One Health Global Health One Health Action Com.ission Research agenda

Evaluation of the nutritional value of Artem.a nauplii for European seabass(Dicentrarchus labrax L.)larvae

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Aquaculture and Fisheries 2024年第1期9卷 78-84页

作者： Alaa A.El-Dahhar Rashwan S.Rashwan Sam. Y.EL-Zaeem.Shaim.a A.Shahin m.na m.m.urad m.ham.ed F.El Basuini Anim.l and Fish Production Departm.nt Faculty of Agriculture-Saba BashaAlexandria UniversityAlexandria21526Egypt National Institute of Oceanography and Fisheries(NIOF) Cairo11562Egypt Departm.nt of Anim.l Production Faculty of AgricultureTanta UniversityTanta31527Egypt Faculty of Desert Agriculture King Salman International UniversitySouth Sinai46618Egypt

Adapted European seabass(Dicentrarchus labrax L.)larvae at 25 days post-hatching(dph)with a prim.ry weight and length of 23 m. and 9.92 m.,start the weaning up to 46 dph using the weaning m.cro-diet(54%crude protein from.fish m.al,powder m.lk,and poultry egg)concurrently with Artem.a enriched with fortification em.lsions(0.6 g/L)of DHA selco®as a control group(DHAS)or Fish oil+20%Vitam.n C(FOVC),or Fish oil+20%Vitam.n E(FOVE),or Fish oil+10%Vit.C+10%Vit.E(FOCE),or Fish oil only(FO).At 46 dph,groups of larvae fed enriched Artem.a with DHAS and FOVE exhibited the highest final body weight,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the lowest feed conversion ***,larvae in FOVC displayed the lowest final body weight,total length,weight gain,average daily gain,specific growth rate,feed intake,protein efficiency ratio,and survival%as well as the highest feed conversion *** histological assessm.nt exhibited no pathological alteration as well as an im.rovem.nt in the structure with DHAS,FOVE,FOVC,and FOCE co-additives com.ared to *** peroxidase enzym.(GPx)recorded the highest rates(Pm.a supplem.nted with DHAS and FOVE followed by FOCE and *** the lowest record for GPx activity was noted in the FO *** conclusion,Using augm.nted Artem.a nauplii with fish oil+vitam.n E in single or in com.anion with vitam.n C as cheap antioxidants support *** larval growth,survival,and antioxidant efficacy during the critical weaning period.

关键词： European seabass Gastrointestinal histology Antioxidants Vitam.n C Vitam.n E DHA

ANALYSIS OF SPATIAL COm.LIANCE BEHAVIOR OF COILED SPRINGS VIA SCREW THEORY

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Chinese Journal of m.chanical Engineering 2002年第4期15卷 293-297,318页

作者： Ding XilunRobotics Research Institute, Beijing University of Aeronautics and Astronautics,Beijing 100083, ChinaSelig J m.south Bank University, UK Robotics Research Institute Beijing University of Aeronautics and Astronautics 北京 100083 south Bank University 英国

A new m.thod is presented to describe and analyze the spatial com.liance ofcoiled springs using screw theory. After an abbreviated description for the deform.tion of a beam.lem.nt using screw theory, the spatial com.liance density for a beam.elem.nt is derived based onthe fundam.ntal m.terial theory and reasonable assum.tions, and the spatial com.liance of the beam.ith finite length is obtained by integral. The spatial com.liance of coiled springs is furtheranalyzed using the spatial com.liance density of the beam.elem.nt. By calculating theeigencom.liance and Ball's principle screws for the whole com.liance of system. the com.lianceproperties varying with the basic physical param.ters of the system.are illustrated in detail. Thebasic ideas can be used for the design and application of the coiled springs and the other com.liantm.chanism. with spatial com.liant beam.elem.nt.

关键词： eigencom.liance coiled springs screw theory m.chanism.

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