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Activation reduction following an eccentric contraction impairs torque steadiness in the isometric steady-state

journal of Sport and Health Science 2018年第3期7卷 310-317页

作者： Nicole Mazara adam j.hess jackey Chen Geoffrey A.Power Department of Human Health and Nutritional Sciences College of Biological Sciences University of Guelph

Background:The isometric steady-state following active lengthening is associated with greater torque production and lower activation,as measured by electromyographic activity(EMG),in comparison with a purely isometric contraction(ISO)at the same joint *** phenomenon is termed residual force enhancement(RFE).While there has been a great deal of research investigating the basic mechanisms of RFE,little work has been performed to understand the everyday relevance of *** purpose of this study was to investigate whether neuromuscular control strategies differ between ISO and RFE by measuring torque steadiness of the human ankle plantar ***:Following ISO maximal voluntary contractions in 12 males(25±4 years),an active lengthening contraction was performed at 15°/s over a 30°ankle excursion,ending at the same joint angle as ISO(5°dorsiflexion;RFE).Surface EMG of the tibialis anterior and soleus muscles was recorded during all *** steadiness was determined as the standard deviation(SD)and coefficient of variation(CV)of the torque trace in the ISO and RFE condition during activation-matching(20%and 60%integrated EMG)and torque-matching(20%and 60%maximal voluntary contraction)***-tailed,paired t tests were used,within subjects,to determine the presence of RFE/activation reduction(AR)and whether there was a difference in torque steadiness between ISO and RFE ***:During the maximal and submaximal conditions,there was 5%-9%RFE with a 9%-11%AR(p0.05).There were no differences in SD and CV of the torque trace for the 20%and60%activation-matching or the 60%and maximal torque-matching trials in either the RFE or ISO condition(p>0.05).During the 20%torquematching trial,there were～37%higher values for SD and CV in the RFE as compared with the ISO condition(p<0.05).A significant moderate-to-strong negative relationship was identified between

关键词： Eccentric Force steadiness History dependence Residual force enhancement Tremor

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Pyrrolizidine Alkaloid content and seed toxicity in Crotalaria species

Pyrrolizidine Alkaloid content and seed toxicity in Crotalar...

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ⅩⅪ International Grassland Congress and the Ⅷ International Rangeland Congress

作者： j.A.Mosjidis I.Khan j.hess Dept.Agronomy and Soils Auburn UniversityAla.Agric.Expt.Stn.AuburnAL 36849 Nat.Center for Natural Products Research School of PharmacyUniv.MississippiMS 38677USA Poultry Science Dept. Auburn UniversityAla.Agric.Expt.Stn.AuburnAL 36849

＜正＞Introduction Crotalaria *** been reported to contain various pyrrolizidine alkaloids（PA） in the *** hemp（C. juncea） is a summer legume with the potential to be valuable as animal fodder in late summer in the Southeast,USA（Mansoer et al.1997）.It has been reported that sunn hemp seeds contain pyrrolizidine alkaloids（PA） that have toxic effects on some

关键词： toxins legumes forage crops

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将气候变化适应能力纳入公共卫生实践--利用适应性管理提升适应能力和增强应变能力

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环境与职业医学 2013年第1期30卷 74-79页

作者： jeremy j.hess julia Z.McDowell George Luber 王仁礼李卫华 Climate and Health Program Division of Environmental Hazards and Health EffectsNational Center for Environmental HealthCenters for Disease Control and Prevention Department of Environmental Health Rollins School of Public Health Departmetn of Emergency Medicine Emory University School of MedicineEmory University

[背景]气候变化被认为会造成一系列健康影响,其中有些影响已显而易见。针对气候变化做出相应的公共卫生策略调整已势在必行,但如何提升公共卫生系统的适应能力与应变能力则少有著述。[目的]探讨适应能力不足的可能原因,总结可能超出公... 详细信息

[背景]气候变化被认为会造成一系列健康影响,其中有些影响已显而易见。针对气候变化做出相应的公共卫生策略调整已势在必行,但如何提升公共卫生系统的适应能力与应变能力则少有著述。[目的]探讨适应能力不足的可能原因,总结可能超出公共卫生应对能力的气候变化对健康的挑战,思考提升公共卫生适应能力的实践改革。[方法]以公共卫生对气候变化的适应能力、社会学习和显示动态复杂性的社会经济体系管理为重点,进行大规模跨学科文献评述。[讨论]关于公共卫生应如何适应气候变化有两种不同观点。两种观点的区别在于气候变化是否从根本上放大了现有灾害,因而需要加强现有公共卫生的功能,或者说气候变化直接造成其特有的危害,需要制定新型的处理策略。在有些情况下,气候敏感性对健康的威胁显然超出了公共卫生的适应能力。应对这些威胁需要进一步加强制度学习、创新管理策略以及研发新型改良工具。适应性管理可能是一种有用的方法,这个迭代框架接纳不确定性,使用模型并结合实践不断改进。本文对其在极端高温天气下都市环境中的应用于以阐述。[结论]提升公共卫生应对某些气候之健康威胁的能力是必要的。集中力量提高特定地区的适应能力,促进制度学习,采取适应性管理以及研发相应的促进工具为优先重点,可以提高当地公共卫生系统对气候变化的应变能力。

关键词：适应性管理气候变化适应气候变化公共卫生公共卫生管理

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作者： hess David j.

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Lucio Fontana 1899-1968

Lucio Fontana 1899-1968

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作者： Barbara hess.

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Is it necessary to fuse to the pelvis when correcting scoliosis in cerebral palsy?

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World journal of Orthopedics 2022年第4期13卷 365-372页

作者： Shane F Strom Matthew C hess Achraf H jardaly Michael j Conklin Shawn R Gilbert Department of Orthopaedics University of Alabama at BirminghamBirminghamAl 35294United States Department of Orthopaedics The Hughston Clinic/Hughston FoundationColumbusGA 31908United States

BACKGROUND Neuromuscular scoliosis is commonly associated with a large pelvic *** in children with cerebral palsy is most commonly managed with posterior spinal instrumentation and *** consensus is reached regarding the proximal starting point of fusion,controversy exists as to whether the distal level of spinal fusion should include the pelvis to correct the pelvic *** To assess the role of pelvic fusion in posterior spinal instrumentation and fusion,particularly it impact on pelvic obliquity correction,and to assess if the rate of complications differed as a function of pelvic *** This was a retrospective,cohort study in which we reviewed the medical records of children with cerebral palsy scoliosis treated with posterior instrumentation and fusion at a single *** follow-up was six *** were stratified into two groups:Those who were fused to the pelvis and those fused to L4/*** major outcomes were complications and radiographic *** former were stratified into major and minor complications,and the latter consisted of preoperative and final Cobb angles,L5-S1 tilt and pelvic *** The study included 47 *** correction of the L5 tilt was 60%in patients fused to the pelvis and 67%in patients fused to L4/L5(P=0.22).The pelvic obliquity was corrected by 43%and 36%in each group,respectively(P=0.12).Regarding complications,patients fused to the pelvis had more total complications as compared to the other group(63.0%vs 30%,respectively,P=0.025).After adjusting for differences in radiographic parameters(lumbar curve,L5 tilt,and pelvic obliquity),these patients had a 79%increased chance of developing complications(Relative risk=1.79;95%CI:1.011-3.41).CONCLUSION Including the pelvis in the distal level of fusion for cerebral palsy scoliosis places patients at an increased risk of postoperative *** added value that pelvic fusion offers in terms of correcting

关键词： Cerebral palsy Scoliosis Pelvic fusion Pelvic obliquity Spinal fusion Distal lumbar level

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Elevated plasma levels of N-terminal pro-brain natriuretic peptide in patients with chronic hepatitis C during interferon-based antiviral therapy

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World journal of Gastroenterology 2006年第36期12卷 5875-5877页

作者： jrg Bojunga Christoph Sarrazin Georg hess Stefan Zeuzem Internal Medicine Ⅱ Saarland University Hospital 66421 Homburg/Saar Germany Roche Diagnostics 68305 Mannheim Germany

AIM: To investigate plasma levels of N-terminal pro-brain natriuretic peptide (NT-proBNP), an established marker of cardiac function, in patients with chronic hepatitis C during interferon-based antiviral therapy. METHODS: Using a sandwich immunoassay, plasma levels of NT-proBNP were determined in 48 patients with chronic hepatitis C at baseline, wk 24 and 48 during antiviral therapy and at wk 72 during ***: Plasma NT-proBNP concentrations were significantly increased (P < 0.05) at wk 24, 48 and 72 compared to the baseline values. NT-proBNP concentrations at baseline and wk 24 were closely correlated (r = 0.8; P < 0.001). At wk 24, 7 (14.6%) patients had NT-proBNP concentrations above 200 ng/L compared to 1 (2%) patient at baseline (P = 0.059). Six of these 7 patients had been treated with high-dose IFN-α induction therapy. In multiple regression analysis, NT-proBNP was not related to other clinical parameters, biochemical parameters of liver disease or virus load and response to ***: Elevated levels of NT-proBNP during and after interferon-based antiviral therapy of chronic hepatitis C may indicate the presence of cardiac dysfunction, which may contribute to the clinical symptoms observed in patients during therapy. Plasma levels of NT-proBNP may be used as a diagnostic tool and for guiding therapy in patients during interferon-based antiviral therapy.

关键词： Hepatitis C N-terminal pro-brain natriuretic peptide Interferon Cardiomyopathy Treatment side effects

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Einstein-Local Counter-Arguments and Counter-Examples to Bell-Type Proofs

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journal of Modern Physics 2023年第2期14卷 89-100页

作者： Karl hess Center for Advanced Study University of Illinois Urbana USA

j. S. Bell’s well-known proofs of inequalities (and related work) are shown to be invalidated by two counter-arguments (-examples) that are based on Einstein-local propositions: Bell-type inequalities of Einstein-Podolsky-Rosen experiments must include, as virtually all physical theories do, elements of physical reality and their mathematical representations that relate to continua as opposed to exclusively finite numbers. Furthermore, Bell-type inequalities must be valid for all possible experimental geometries that lead to the quantum result. Based on these propositions, violations of Bell-type inequalities are demonstrated without violating Einstein locality, without conspiracy type theories and even for the case that all known “loopholes” are closed.

关键词： Bell’s Inequalities Quantum Entanglement EPR Experiments

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Kolmogorov’s Probability Spaces for “Entangled” Data-Subsets of EPRB Experiments: No Violation of Einstein’s Separation Principle

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journal of Modern Physics 2020年第5期11卷 683-702页

作者： Karl hess Center for Advanced Study University of Illinois Urbana Illinois USA

It is demonstrated that the use of Kolmogorov’s probability theory to describe results of quantum probability for EPRB (Einstein-Podolsky-Rosen-Bohm) experiments requires extreme care when different subsets of measurement outcomes are considered. j. S. Bell and his followers have committed critical inaccuracies related to spin-gauge and probability measures of such subsets, because they use exclusively a single probability space for all data sets and sub-sets of data. It is also shown that Bell and followers use far too stringent epistemological requirements for the consequences of space-like separation. Their requirements reach way beyond Einstein’s separation principle and cannot be met by the major existing physical theories including relativity and even classical mechanics. For example, the independent free will does not empower the experimenters to choose multiple independent spin-gauges in the two EPRB wings. It is demonstrated that the suggestion of instantaneous influences at a distance (supposedly “derived” from experiments with entangled quantum entities) is a consequence of said inaccuracies and takes back rank as soon as the Kolmogorov probability measures are related to a consistent global spin-gauge and permitted to be different for different data subsets: Using statistical interpretations and different probability spaces for certain subsets of outcomes instead of probability amplitudes related to single quantum entities, permits physical explanations without a violation of Einstein’s separation principle.

关键词： Bell’s Theorem Einstein’s Separation Principle EPRB Experiments

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An efficient method for unfolding kinetic pressure driven VISAR data

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High Power Laser Science and Engineering 2015年第3期3卷 50-58页

作者： M.hess K.Peterson A.Harvey-Thompson Sandia National Laboratories

Velocity Interferometer System for Any Reflector(VISAR) [Barker and Hollenbach, j. Appl. Phys. 43, 4669(1972)]is a well-known diagnostic that is employed on many shock physics and pulsed-power experiments. With the VISAR diagnostic, the velocity on the surface of any metal flyer can be found. For most experiments employing VISAR, either a kinetic pressure [Grady, Mech. Mater. 29, 181(1998)] or a magnetic pressure [Lemke et al., Intl j. Impact Eng. 38,480(2011)] drives the motion of the flyer. Moreover, reliable prediction of the time-dependent pressure is often a critical component to understanding the physics of these experiments. Although VISAR can provide a precise measurement of a flyer's surface velocity, the real challenge of this diagnostic implementation is using this velocity to unfold the timedependent pressure. The purpose of this paper is to elucidate a new method for quickly and reliably unfolding VISAR data.

关键词： laser driven blast wave pulsed-power VISAR

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