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Investigation of contact behavior on a model of the dual-mobility artificial hip joint for Asians in different inner liner thicknesses

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World Journal of orthopedics 2024年第4期15卷 321-336页

作者： Taufiq Hidayat Muhammad Imam Ammarullah Rifky Ismail Eko Saputra M danny Pratama Lamura Chethan k n Athanasius Priharyoto Bayuseno J Jamari department of Mechanical Engineering Universitas Muria KudusKudus 59352Central JavaIndonesia department of Mechanical Engineering Universitas DiponegoroSemarang 50275Central JavaIndonesia Undip Biomechanics Engineering&Research Centre Universitas DiponegoroSemarang 50275Central JavaIndonesia Center for Biomechanics Biomaterials Biomechatronics and Biosignal Processing Universitas DiponegoroSemarang 50275Central JavaIndonesia department of Mechanical Engineering Politeknik Negeri SemarangSemarang 50275Central JavaIndonesia department of Aeronautical and Automobile Engineering Manipal Institute of TechnologyManipalManipal Academy of Higher EducationManipal 576104KarnatakaIndia

BACkGRoUnd The four components that make up the current dual-mobility artificial hip joint design are the femoral head,the inner liner,the outer liner as a metal cover to prevent wear,and the acetabular *** acetabular cup and the outer liner were constructed of 316L stainless *** the same time,the inner liner was made of ultra-high-molecular-weight polyethylene(UHMWPE).As this new dual-mobility artificial hip joint has not been researched extensively,more tribological research is needed to predict *** thickness of the inner liner is a significant component to consider when calculating the contact *** To make use of finite element analysis to gain a better understanding of the contact behavior in various inner liner thicknesses on a new model of a dual-mobility artificial hip joint,with the ultimate objective of determining the inner liner thickness that was most suitable for this particular type of dual-mobility artificial hip *** In this study,the size of the femoral head was compared between two diameters(28 mm and 36 mm)and eight inner liner thicknesses ranging from 5 mm to 12 *** the finite element method,the contact parameters,including the maximum contact pressure and contact area,have been evaluated in light of the Hertzian contact *** simulation was performed statically with dissipated energy and asymmetric *** types of interaction were surface-to-surface contact and normal contact *** The maximum contact pressures in the inner liner(UHMWPE)at a head diameter of 28 mm and 36 mm are between 3.7-13.5 MPa and 2.7-10.4 MPa,*** maximum von Mises of the inner liner,outer liner,and acetabular cup are 2.4–11.4 MPa,15.7–44.3 MPa,and 3.7–12.6 MPa,respectively,for 28 mm *** the maximum von Mises stresses of the 36 mm head are 1.9-8.9 MPa for the inner liner,9.9-32.8 MPa for the outer liner,and 2.6-9.9 MPa for the acetabular cup.A head with a diameter of 28 mm should have an inner line

关键词： Contact behavior Contact pressure Finite element analysis dual-mobility Artificial hip joint

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A Learning-based Control Framework for Fast and Accurate Manipulation of a Flexible object

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Journal of Bionic Engineering 2024年第4期21卷 1761-1774页

作者： Junyi Wang Xiaofeng Xiong Silvia Tolu Stanislav n.Gorb department of Electrical and Photonics Engineering Technical University of DenmarkAnker Engelunds Vej 101Kongens LyngbyZealand2800Denmark SdU Biorobotics Mærsk Mc-Kinney Møller InstituteUniversity of Southern Denmark(SDU)Campusvej 55Odense MFunen5230Denmark department Functional Morphology and Biomechanics Zoological InstituteUniversity of KielAm Botanischen Garten 1–9D-24118KielSchleswig-HolsteinGermany

This paper presents a learning-based control framework for fast(3 times of others).Besides,motion tracking errors are greatly reduced to 13.29 and 22.36 of constant impedance control by the oIAC of the proposed *** ad... 详细信息

This paper presents a learning-based control framework for fast(nd accurate manipulation of a flexible object,i.e.,whip *** framework consists of a motion planner learned or optimized by an algorithm,online Impedance Adaptation Control(oIAC),a sim2real mechanism,and a visual feedback *** experimental results show that a soft actor-critic algorithm outperforms three deep Reinforcement Learning(dRL),a nonlinear optimization,and a genetic algorithm in learning generalization of motion *** can greatly reduce average learning trials(toof others)and maximize average rewards(to>3 times of others).Besides,motion tracking errors are greatly reduced to 13.29 and 22.36 of constant impedance control by the oIAC of the proposed *** addition,the trajectory similarity between simulated and physical whips is *** presented framework provides a new method integrating data-driven and physics-based algorithms for controlling fast and accurate arm manipulation of a flexible object.

关键词： deep reinforcement learning deformable object manipulation Variable impedance control Sim2real Visual tracking

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Two-dimensional magnetic materials for spintronic applications

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nano Research 2024年第2期17卷 743-762页

作者： Shivam n.kajale Jad Hanna kyuho Jang deblina Sarkar MIT Media Lab Massachusetts Institute of TechnologyCambridgeMA 02139USA department of Information Technology and Electrical Engineering ETH ZürichZürich8092Switzerland

Spintronic devices are driving new paradigms of bio-inspired,energy efficient computation like neuromorphic stochastic computing and in-memory *** have also emerged as key candidates for non-volatile memories for embedded systems as well as alternatives to persistent *** meet the growing demands from such diverse applications,there is need for innovation in materials and device designs which can be scaled and adapted according to the ***-dimensional(2d)magnetic materials address challenges facing bulk magnet systems by offering scalability while maintaining device integrity and allowing efficient control of *** this review,we highlight the progress made in experimental studies on 2d magnetic materials towards their integration into spintronic *** provide an account of the various relevant material discoveries,demonstrations of current and voltage-based control of magnetism and reported device systems,while also discussing the challenges and opportunities towards integration of 2d magnetic materials in commercial spintronic devices.

关键词： spintronics van der Waals magnetic tunnel junction(MTJ) spin-orbit torque magnetism

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optimizing laser coupling,matter heating,and particle acceleration from solids using multiplexed ultraintense lasers

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Matter and Radiation at Extremes 2024年第4期9卷 16-28页

作者： Weipeng Yao Motoaki nakatsutsumi Sébastien Buffechoux Patrizio Antici Marco Borghesi Andrea Ciardi Sophia n.Chen Emmanuel d’Humières Laurent Gremillet Robert Heathcote Vojtech Horny Paul Mckenna Mark n.Quinn Lorenzo Romagnani Ryan Royle Gianluca Sarri Yasuhiko Sentoku Hans-Peter Schlenvoigt Toma Toncian olivier Tresca Laura Vassura oswald Willi Julien Fuchs LULI-CnRS CEASorbonne UniversitéEcole PolytechniqueInstitut Polytechnique de ParisF-91128 Palaiseau CedexFrance Sorbonne Université Observatoire de ParisUniversité PSLCNRSLERMAF-75005 ParisFrance InRS-EMT 1650 BoulLionel-BouletVarennesQuebec J3X 1S2Canada Center for Plasma Physics School of Mathematics and PhysicsQueen’s University BelfastBelfast BT71NNUnited Kingdom “Horia Hulubei”national Institute for Physics and nuclear Engineering 30 Reactorului StreetRO-077125 Bucharest-MagureleRomania University of Bordeaux Centre Lasers Intenses et ApplicationsCNRSCEAUMR 5107F-33405 TalenceFrance CEA DAMDIFF-91297 ArpajonFrance Université Paris-Saclay CEALMCE91680 Bruyères-le-ChatelFrance Central Laser Facility STFC Rutherford Appleton LaboratoryDidcotUnited Kingdom SUPA Department of PhysicsUniversity of StrathclydeGlasgow G40NGUnited Kingdom department of Physics University of NevadaRenoNevada 89557USA Institute of Laser Engineering Osaka University2-6 YamadaokaSuitaOsaka 565-0871Japan Institut fur Laser und Plasmaphysik Heinrich Heine Universitat DusseldorfDusseldorfGermany

Realizing the full potential of ultrahigh-intensity lasers for particle and radiation generation will require multi-beam arrangements due to technology ***,we investigate how to optimize their coupling with solid ***,we show that overlapping two intense lasers in a mirror-like configuration onto a solid with a large preplasma can greatly improve the generation of hot electrons at the target front and ion acceleration at the target *** underlying mechanisms are analyzed through multidimensional particle-in-cell simulations,revealing that the self-induced magnetic fields driven by the two laser beams at the target front are susceptible to reconnection,which is one possible mechanism to boost electron *** addition,the resistive magnetic field generated during the transport of the hot electrons in the target bulk tends to improve their *** simulations also indicate that such effects can be further enhanced by overlapping more than two laser beams.

关键词： laser acceleration particle

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Reference gene panel for urinary exosome-based molecular diagnostics in patients with kidney disease

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World Journal of nephrology 2024年第3期13卷 62-72页

作者： deendayal d Mishra Pramod k Maurya Swasti Tiwari department of Molecular Medicine and Biotechnology Sanjay Gandhi Postgraduate Institute of Medical SciencesLucknow 226014Uttar PradeshIndia

BACkGRoUnd kidney disease is a severe complication of diabetes that often leads to end-stage renal *** diagnosis is crucial for prevention or ***,the current diagnostic methods,with their limitations in detecting the disease in its early stages,underscore the urgency and importance of finding new *** encapsulated inside urinary exosomes(UEs)have potential as early biomarkers for kidney *** need for reference miRnAs for accurate interpretation currently limits their translational *** To identify consistently expressing reference miRnAs from UEs of controls and patients with type 2 diabetesmellitus(T2dM)and biopsy-confirmed kidney *** miRnA profiling was performed on UEs from 31 human urine samples using a rigorous and unbiased *** UEs were isolated from urine samples collected from healthy individuals(n=6),patients with T2dM(n=13),and T2dM patients who also had kidney diseases(including diabetic nephropathy,n=5;membranous nephropathy,n=5;and IgA nephropathy,n=2)through differential *** characterizing the UEs,miRnA expression profiling using microarray technology was *** Microarray data analysis identified 14 miRnAs that were consistently expressed in UEs from 31 human samples,representing various kidney conditions:diabetic controls,diabetic nephropathy,membrane nephropathy,IgA nephropathy,and healthy *** in silico analysis,we determined that 10 of these miRnAs had significant potential to serve as reference genes in *** We identified uniformly expressing UE miRnAs that could serve as reference genes kidney disease biomarkers.

关键词： miRnA Microarray Urinary exosomes diabetic nephropathy Type 2 diabetes mellitus kidney disease

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The relationship between dnA fragmentation and the intensity of morphologically abnormal human spermatozoa

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Asian pacific Journal of Reproduction 2024年第1期13卷 22-27页

作者： Mercedes González-Martínez Pascual Sánchez-Martín Carmen López-Fernández Stephen d.Johnston Jaime Gosálvez Clínica Ginemed Unidad de ReproducciónSevillaSpain department of Biology Universidad Autónoma de MadridCantoblancoMadridSpain School of Environment The University of QueenslandGattonAustralia School of Veterinary Science The University of QueenslandGattonAustralia

objective:To determine the relationship between teratozoospermia and sperm dnA fragmentation(SdF)in the human ***:This retrospective study included 100 normozoospermic men as a control cohort(abnormal forms>14%),210 patients with a high level of abnormal forms(≤4%)and 65 patients presenting with a moderate level of abnormal forms(>4%to≤14%)based on the World Health organization *** morphology was assessed using bright field *** dnA fragmentation was assessed using the sperm chromatin dispersion ***-parametric analyses were conducted to examine the relationship between abnormal sperm morphology and sperm dnA fragmentation;receiver operating characteristic(RoC)analyses were conducted to assess sensitivity and specificity of this ***:A correlation analysis revealed that the higher the proportion of abnormal spermatozoa in the ejaculate,the higher the level of SdF(Spearman's Rho=-0.230;Pnificant differences in the proportion of SdF were found when all cohorts were compared(Pnificant differences were also retained when the different cohorts were compared *** analysis showed a moderate but significant predictive value for SdF to differentiate patients with different levels of ***:Although analysis of a more continuous range of values for teratozoospermia would help further clarify any causal relationship with SdF,there is clearly a synergistic or coincident affiliation between these variables that needs to be acknowledged by the clinician when interpreting the spermiogram.

关键词： Teratozoospermia Sperm morphology Sperm dnA fragmentation Male factor Human reproduction Human fertility

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ovarian Tumors in Senegalese Women: Impact of d-Loop Mutations between Healthy and Cancerous Tissues

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open Journal of Genetics 2024年第2期14卷 37-46页

作者： Rouguiyatou ka Fatimata Mbaye Bineta kénéme Mbacké Sembène Genomics Laboratory Department of Animal Biology Faculty of Science and Technology Cheikh Anta Diop University Dakar Senegal

In Senegal in particular, ovarian cancer, which is one of the most common gynecological cancers, accounts for 2.8% of deaths. The most important risk factor is genetic, with 10% of cases occurring in a context of genetic predisposition. The sequencing of the human genome, which has led to the discovery of millions of sequence variations, makes it possible to study variations within sequences. These variations are limited to Single nucleotide Polymorphisms (SnPs) and this common form of polymorphism occurs approximately every 1000 bases in the human genome and 1.8 million SnPs are currently listed according to [1]. The aim of this study is to gain a better understanding of the impact of mutations in the d-loop region of mtdnA on ovarian cancer in Senegalese women. This study involved searching for mutations in our study population after dnA extraction and sequencing. Mutations were found after a comparison of our sequences with the Cambridge reference sequence (nC_012920). The mutations found in the dnA studied extend from position 7 to position 16568 and most of these mutations are located in the hypervariate zones (HV1 and HV2). Heteroplasmy with three mutant alleles was also found in certain variants. Common mutations were found in both healthy and cancerous tissues, with almost identical frequencies in both types of tissue. This enabled us to understand the spread of tumor cells throughout the ovary.

关键词： ovarian Cancer Mutations d-Loop Heteroplasmy

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Ground-based and additional science support for SMILE

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Earth and Planetary Physics 2024年第1期8卷 275-298页

作者： J.A.Carter M.dunlop C.Forsyth k.oksavik E.donovon A.kavanagh S.E.Milan T.Sergienko R.C.Fear d.G.Sibeck M.Connors T.Yeoman X.Tan M.G.G.T.Taylor k.McWilliams J.Gjerloev R.Barnes d.d.Billet G.Chisham A.dimmock M.P.Freeman d.-S.Han M.d.Hartinger S.-Y.W.Hsieh Z.-J.Hu M.k.James L.Juusola k.kauristie E.A.kronberg M.Lester J.Manuel J.Matzka I.McCrea Y.Miyoshi J.Rae L.Ren F.Sigernes E.Spanswick k.Sterne A.Steuwer T.Sun M.-T.Walach B.Walsh C.Wang J.Weygand J.Wild J.Yan J.Zhang Q.-H.Zhang Planetary Sciences Group School of Physics and AstronomyUniversity of LeicesterUniversity RoadLeicesterLE17RHUK Rutherford Appleton Laboratory Space Science Technology Facilities CouncilOxfordshireUK School of Space and Environment Beihang UniversityBeijing 100191China key Laboratory of Space Environment Monitoring and Information Processing Ministry of Industry and Information TechnologyBeijing 100017China department of Space and Climate Physics UCLMullard Space Science LaboratoryHolmbury St.MaryDorkingSurreyRH56NTUK Birkeland Centre for Space Science Department of Physics and Technology.University of BergenBergenNorway department of Physics and Astronomy University of Calgary2500 University DriveCalgaryAlbertaCanada T2N 1N4 British Antarctic Survey CambridgeUK Swedish Institute of Space Physics KirunaSweden West Highfield Campus University of SouthamptonUniversity RoadSO171BJUK Goddard Space Flight Center NASAGreenbeltMarylandUSA Athabasca University AthabascaCanada ESTEC European Space AgencyNetherlands University of Saskatchewan SaskatoonCanada The Johns Hopkins University Applied Physics Laboratory LaurelMarylandUSA Swedish Institude of Space Physics UppsalaSE 75121Sweden Tongji University Shanghai 200092China Center for Space Plasma Physics Space Science Institute4765 Walnut Street Suite BBoulderColorado80301USA Polar Research Institute of China Shanghai 200136China Finnish Meteorological Institute(FMI) Finland department of Earth and Environmental Sciences(Geophysics) Ludwig Maximilian University of Munich(LMU)MunichTheresienstr.41MunichD-80333Germany Canadian Space Agency MontrealCanada GFZ German Research Centre for Geosciences PotsdamGermany nagoya University Institute for Space Earth Environment ResearchCenter for Integrated Data ScienceNagoyaAichiJP 464-8601 northumbria University Newcastle upon TyneTyne and WearUK NE18ST national Space Science Center Chinese Academy SciencesBeijing 100190China Arctic Geophysics University Centre in Svalbard

The joint European Space Agency and Chinese Academy of Sciences Solar wind Magnetosphere Ionosphere Link Explorer(SMILE)mission will explore global dynamics of the magnetosphere under varying solar wind and interplanetary magnetic field conditions,and simultaneously monitor the auroral response of the northern Hemisphere *** these large-scale responses with medium and fine-scale measurements at a variety of cadences by additional ground-based and space-based instruments will enable a much greater scientific impact beyond the original goals of the SMILE ***,we describe current community efforts to prepare for SMILE,and the benefits and context various experiments that have explicitly expressed support for SMILE can offer.A dedicated group of international scientists representing many different experiment types and geographical locations,the Ground-based and Additional Science Working Group,is facilitating these *** include constructing an online SMILE data Fusion Facility,the discussion of particular or special modes for experiments such as coherent and incoherent scatter radar,and the consideration of particular observing strategies and spacecraft *** anticipate growing interest and community engagement with the SMILE mission,and we welcome novel ideas and insights from the solar-terrestrial community.

关键词： magnetosphere ionosphere magnetosphere-ionosphere coupling ground-based experimentation SMILE conjunctions missions

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Ion emission from warm dense matter produced by irradiation with a soft x-ray free-electron laser

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Matter and Radiation at Extremes 2024年第1期9卷 71-84页

作者： Josef krása Tomás Burian Vera Hájková Jaromír Chalupský Šimon Jelínek katerina Frantálová Michal krupka Zuzana kuglerová Sushil kumar Singh Vojtech Vozda Ludek Vysín MichalŠmíd Pablo Perez-Martin Marion kühlman Juan Pintor Jakub Cikhardt Matthias dreimann dennis Eckermann Felix Rosenthal Sam M.Vinko Alessandro Forte Thomas Gawne Thomas Campbell Shenyuan Ren YuanFeng Shi Trevor Hutchinson oliver Humphries Thomas Preston Mikako Makita Motoaki nakatsutsumi Xiayun Pan Alexander köhler Marion Harmand Sven Toleikis katerina Falk Libor Juha department of Radiation and Chemical Physics Institute of PhysicsCzech Academy of SciencesNa Slovance 218221 Prague 8Czech Republic Laser Plasma department Institute of Plasma PhysicsCzech Academy of SciencesZa Slovankou 318200 Prague 8Czech Republic department of Surface and Plasma Science Faculty of Mathematics and PhysicsCharles University in PragueV Holesovi ckách 218000 Prague 8Czech Republic department of Physical Electronics Faculty of Nuclear Science and Engineering PhysicsCzech Technical University in PragueV Holesovi ckách 218000 Prague 8Czech Republic Helmholtz-Zentrum dresden-Rossendorf Bautzner Landstraße 40001328 DresdenGermany dESY Photon Science Notkestraße 85D-22607 HamburgGermany Institut de Minéralogie de Physique des Matériaux et de CosmochimieUMR 7590–UPMC/CNRS/IRD/MNHNSorbonne Université4 place Jussieu75005 ParisFrance department of Physics Faculty of Electrical EngineeringCzech Technical University in PragueTechnická216627 Prague 6Czech Republic Center for Soft nanoscience University of MünsterBusso-Peus-Straße 10D-48149 MünsterGermany department of Physics Clarendon LaboratoryUniversity of OxfordParks RoadOxford OX13PUUnited Kingdom Central Laser Facility STFC Rutherford Appleton LaboratoryDidcot OX110QXUnited Kingdom Lawrence Livermore national Laboratory 7000 East AvenueLivermoreCalifornia 94550USA European XFEL GmbH Holzkoppel 4D-22869 SchenefeldGermany Technische Universität dresden 01062 DresdenGermany

We report on an experiment performed at the FLASH2 free-electron laser(FEL)aimed at producing warm dense matter via soft x-ray isochoric *** the experiment,we focus on study of the ions emitted during the soft x-ray ablation process using time-of-flight electron multipliers and a shifted Maxwell–Boltzmann velocity distribution *** find that most emitted ions are thermal,but that some impurities chemisorbed on the target surface,such as protons,are accelerated by the electrostatic field created in the plasma by escaped *** morphology of the complex crater structure indicates the presence of several ion groups with varying *** find that the ion sound velocity is controlled by the ion temperature and show how the ion yield depends on the FEL radiation attenuation length in different materials.

关键词： electrostatic emitted chemi

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Aerosol jet printing of surface acoustic wave microfluidic devices

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Microsystems & nanoengineering 2024年第1期10卷 231-242页

作者： Joseph Rich Brian Cole Teng Li Brandon Lu Hanyu Fu Brittany n.Smith Jianping Xia Shujie Yang Ruoyu Zhong James L.doherty kanji kaneko Hiroaki Suzuki Zhenhua Tian Aaron d.Franklin Tony Jun Huang department of Biomedical Engineering Duke UniversityDurhamNC 27708USA department of Electrical and Computer Engineering Duke UniversityDurhamNC 27708USA department of Mechanical Engineering Virginia Polytechnic Institute and State UniversityBlacksburgVA 24061USA Thomas Lord department of Mechanical Engineering and Materials Science Duke UniversityDurhamNC 27708USA deptartment of Precision Mechanics Faculty of Science and EngineeringChuo UniversityTokyo 112-8551Japan department of Chemistry Duke UniversityDurhamNC 27708USA

The addition of surface acoustic wave(SAW)technologies to microfluidics has greatly advanced lab-on-a-chip applications due to their unique and powerful attributes,including high-precision manipulation,versatility,integrability,biocompatibility,contactless nature,and rapid ***,the development of SAW microfluidic devices is limited by complex and time-consuming micro/nanofabrication techniques and access to cleanroom facilities for multistep photolithography and vacuum-based *** simplify the fabrication of SAW microfluidic devices with customizable dimensions and functions,we utilized the additive manufacturing technique of aerosol jet *** successfully fabricated customized SAW microfluidic devices of varying materials,including silver nanowires,graphene,and poly(3,4-ethylenedioxythiophene)polystyrene sulfonate(PEdoT:PSS).To characterize and compare the acoustic actuation performance of these aerosol jet printed SAW microfluidic devices with their cleanroom-fabricated counterparts,the wave displacements and resonant frequencies of the different fabricated devices were directly measured through scanning laser doppler ***,to exhibit the capability of the aerosol jet printed devices for lab-on-a-chip applications,we successfully conducted acoustic streaming and particle concentration ***,we demonstrated a novel solution-based,direct-write,single-step,cleanroom-free additive manufacturing technique to rapidly develop SAW microfluidic devices that shows viability for applications in the fields of biology,chemistry,engineering,and medicine.

关键词： printing wave fluid

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