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Noise-enhanced dynamic single leg balance in subjects with functional ankle instability

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journal of Sport and Health Science 2012年第2期1卷 102-106页

作者： Scott Ross Brent arnold Virginia commonwealth University

Background:Stochastic resonance stimulation(SRS) transmits subsensory electrical Gaussian white noise into the body to enhance sensorimotor *** therapy has improved static single leg balance in subjects with functional ankle ***,the effect of this stimulation on dynamic single leg balance is not *** in dynamic single leg balance with SRS may have implications For enhancing functional rehabilitation for ankle ***,the purpose of this study was to determine the effects of SRS on dynamic single leg balance in subjects with functional ankle instability. Methods:This study was an experimental research design and data were collected in a sports medicine research *** subjects with functional ankle instability(69±15 kg;173±10 cm;21±2 years) reported a history of ankle sprains and instability at the ankle with physical activity.A single leg jump-landing test was used to assess dynamic *** were required to jump between 50% and 55% of the maximal vertical jump height,land on a single leg atop a force plate,and stabilize as quickly as ***-landing tests were performed with and without *** trials were performed for each treatment condition(SRS and control).A randomized block design was used to determine test ***/posterior and medial/lateral time-to-stabilization were computed to assess dynamic *** time indicated better ***-tailed paired samples t tests were used for analysis(α≤0.05). Results:SRS improved anterior/posterior time-to-stabilization(stochastic resonance = 1.32±0.31 s,control = 1.74±0.80 s,p = 0.03),but did not enhance medial/lateral time-to-stabilization(stochastic resonance = 1.95±0.40 s,control = 1.92±0.48 s,p = 0.07). conclusion:clinicians might use SRS to facilitate balance improvements with sagittal plane dynamic single leg balance exercises that patients may not be able to perform otherwise.

关键词： chronic Posture Sprain Stochastic resonance

The chinese Version of the Pythagorean Theorem and the case of the Missing Diagram:A Memoir

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chinese Annals of History of Science and Technology 2018年第2期2卷 72-85页

作者： arnold Koslow The Graduate center The City University of New YorkNY 10016US

For a long time,it has been something of a mystery why,in joseph Needham’s third volume of Science and civilisation in china,a translation by arnold Koslow of a proof of the Pythagorean Theorem was published,together with an inappropriate diagram indicating how that proof *** story of the origin of the translation,accompanied by the irrelevant diagram,is here recounted by the author of both items,along with the translation accompanied by the appropriate missing diagram for the proof,which was intended for publication but never made it.

关键词： ancient proof of chinese Pythagorean theorem joseph Needham translation the missing diagram Zhoubi suanjing

Magnetic field sensors using arrays of electrospun magnetoelectric janus nanowires

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Microsystems & Nanoengineering 2018年第1期4卷 24-35页

作者： Matthew j.Bauer Xiao Wen Prabal Tiwari David P.arnold jennifer S.Andrew Dept.of Materials Science and Engineering University of FloridaGainesvilleFL 32611-6400USA Dept.of Electrical and computer Engineering University of FloridaGainesvilleFL 32611-6200USA

The fabrication and characterization of the first magnetoelectric sensors utilizing arrays of janus magnetoelectric composite nanowires composed of barium titanate and cobalt ferrite are *** utilizing magnetoelectric nanowires suspended across electrodes above the substrate,substrate clamping is reduced when compared to layered thin-film architectures;this results in enhanced magnetoelectric *** magnetoelectric nanowires are fabricated by sol–gel electrospinning,and their length is controlled through the electrospinning and calcination *** a directed nanomanufacturing approach,the nanowires are then assembled onto pre-patterned metal electrodes on a silicon substrate using *** this process,functional magnetic field sensors are formed by connecting many nanowires in *** observed magnetic field sensitivity from the parallel array of nanowires is 0.514±.027mV Oe^(−1) at 1 kHz,which translates to a magnetoelectric coefficient of 514±27mV cm^(−1) Oe^(−1).

关键词： nanowires composite utilizing

Estimation of j—R curves for Small-Sized cOEc Specimens and Its Application considering crack-Tip cons tr aints

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Acta Mechanica Solida Sinica 2019年第3期32卷 261-276页

作者： G.W.He c.Bao L.X.cai Y.j.Wu Applied Mechanics and Structure Safety Key Laboratory of Sichuan Province School of Mechanics and Engineering Southwest Jiaotong University Chengdu 610031 China

The normalization method has been employed to estimate the j-resistance (j—R) curves for c-shaped outside edge-notched compression (cOEc) specimens of SA-508 steel. The cOEc specimens present the lowest j—R curves in comparison with other three types of specimens. Based on the j—Q—M met hod, the constraint parame ter Q determined at the mid-plane in the through-thickness direction of the specimen is used to approximately quantify the threedimensional crack-tip constraint for cOEc specimens. combining with the previous experiments on j—R curves, the constraint-coirected j—R curves for SA-508 steel specimens are given, which may be used to predict the fracture toughness of actual cracked components in structural integrity assessment.

关键词： Ductile fracture toughness cOEc specimen Dimensionless load separation principle Normalization method crack-tip constraint j-Q-M method

Biomechanical thrombosis: the dark side of force and dawn of mechano-medicine

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Stroke & Vascular Neurology 2020年第2期5卷 185-197页

作者： Yunfeng chen Lining arnold ju Molecular Medicine Scripps Research InstituteLa JollaCaliforniaUSA School of Biomedical Engineering Heart Research Institute and Charles Perkins CentreThe University of SydneyCamperdownNew South WalesAustralia

Arterial thrombosis is in part contributed by excessive platelet aggregation,which can lead to blood clotting and subsequent heart attack and *** are sensitive to the haemodynamic *** haemodynamcis and disturbed blood flow,which occur in vessels with growing thrombi and atherosclerotic plaques or is caused by medical device implantation and intervention,promotes platelet aggregation and thrombus *** such situations,conventional antiplatelet drugs often have suboptimal efficacy and a serious side effect of excessive *** the mechanisms of platelet biomechanical activation provides insights distinct from the classic views of agonist-stimulated platelet thrombus *** this work,we review the recent discoveries underlying haemodynamic force-reinforced platelet binding and mechanosensing primarily mediated by three platelet receptors:glycoprotein Ib(GPIb),glycoprotein IIb/IIIa(GPIIb/IIIa)and glycoprotein VI(GPVI),and their implications for development of antithrombotic‘mechano-medicine’.

关键词： aggregation implantation primarily

Emerging role of A-kinase anchoring protein 5 signaling in reward circuit function

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Neural Regeneration Research 2025年第10期20卷 2913-2914页

作者： William j.Flerlage Mark L.Dell’Acqua Brian M.cox Fereshteh S.Nugent Uniformed Services University of the Health Sciences Department of Pharmacology and Molecular TherapeuticsBethesdaMDUSA Department of Pharmacology University of Colorado School of MedicineAnschutz Medical CampusAuroraCOUSA

There is a strong evidence supporting the hypothesis of synaptic dysfunction as a major contributor to neural circuit and network disruption underlying emotional and mood dysregulation in psychiatric disorders(Simmons et al.,2024).Diverse sets of distinct molecular signaling pathways converge on the synapse to regulate synaptogenesis,synaptic function,and synaptic plasticity in brain regions and circuits through complex interactions organized by numerous multivalent protein scaffolds,including the family of proteins known as A-kinase anchoring proteins(AKAPs).

关键词： function supporting

Low-carbon,Mn-Si cast Steel Structure Modification by Fluidized Bed Heat Treatment

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journal of Iron and Steel Research International 2011年第S1期18卷 541-545页

作者： jasiński józef Podsiad Piotr jasiński jaroslaw Bul arnold Kaczmarczyk Andrzej czestochowa University of Technology Materials Science InstituteArmii Krajowej Av.1942-200 CzestochowaPoland HSW Stalowa Wola E.Kwiatkowskiego St.137-450 Stalowa WolaPoland

The effect of fluidized bed heat treatment (FBHT) on low-carbon Mn-Si cast steel strength properties improvement,strictly ductility is shown in this *** bed heat treatment variants are chosen in order to eliminate the structure defaults after a crystallization *** parameters are set considering an initial state material chemical composition,structure morphology and application criterion after heat *** results are verified according with the standard BS 3100:1991 *** bed heat treatment variants are chosen mainly in order to the Widmanst tten ferrite structures elimination,carbides morphology modification and matrix optimum performance properties *** ZG35SiMn (EN:L30GS) FBHT processes results are verified by the metallographic researches,hardness/microhardness measurements and tensile strength examination.

关键词： cast steel heat treatment modification fluidized bed

Harnessing artificial intelligence for identifying conflicts of interest in research

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World journal of Methodology 2025年第1期15卷 6-8页

作者： Abdulqadir j Nashwan Department of Nursing&Midwifery Research Hamad Medical CorporationDoha 3050Qatar

This editorial explores the transformative potential of artificial intelligence(AI)in identifying conflicts of interest(cOIs)within academic and scientific *** harnessing advanced data analysis,pattern recognition,and natural language processing techniques,AI offers innovative solutions for enhancing transparency and integrity in *** editorial discusses how AI can automatically detect cOIs,integrate data from various sources,and streamline reporting processes,thereby maintaining the credibility of scientific findings.

关键词： Artificial intelligence conflicts of interest Transparency Research integrity Natural language processing

Direct impacts of climatic warming on heat stress in endothermic species: seabirds as bioindicators of changing thermoregulatory constraints

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Integrative Zoology 2012年第2期7卷 121-136页

作者： Stephen A.OSWALD jennifer M.arnold Division of Science Pennsylvania State UniversityBerks CampusReadingPennsylvaniaUSA

There is now abundant evidence that contemporary climatic change has indirectly affected a wide-range of species by changing trophic interactions,competition,epidemiology and ***,direct physiological impacts of changing climates are rarely reported for endothermic species,despite being commonly reported for ec*** review the evidence for changing physiological constraints on endothermic vertebrates at high temperatures,integrating theoretical and empirical perspectives on the morphology,physiology and behavior of marine *** for increasing heat stress exposure depends on changes in multiple environmental variables,not just air temperature,as well as organism-specific morphology,physiology and *** breeding at high latitudes are vulnerable to the forecast,extensive temperature changes because of the adaptations they possess to minimize heat ***-latitude species will also be challenged as they currently live close to their thermal limits and will likely suffer future water ***,highly-active species,particularly aerial foragers,are acutely vulnerable as they are least able to dissipate heat at high ***,direct physiological impacts of climatic change appear underrepresented in the published literature,but available data suggest they have much potential to shape behavior,morphology and distribution of endothermic spe*** between future heat stress events and other energetic constraints on endotherms remains largely unexplored but will be key in determining the physiological impacts of climatic ***-scale,biophysical modeling,informed by experiments that quantify thermoregulatory responses of endotherms to heat stress,is an essential precursor to urgently-needed analyses at the population or species level.

关键词： climatic change direct effects of climate physiology seabirds thermoregulation