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本土化压力管理与心身增弹训练(SMART-C)对提升教师心理弹性与睡眠质量的作用研究

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世界睡眠医学杂志 2018年第7期5卷 808-812页

作者：王芳冯帆 john w.denniger Herbert Benson Gregory L.Fricchione 中国中医科学院广安门医院睡眠心理科北京100053 哈佛大学医学院麻省总医院本森亨利心身医学研究所波士顿02114

关键词：本土化压力管理与心身增弹训练教师心身弹性睡眠质量

Morphology,distribution,and chromosome counts of two varieties of Hedychium villosum(Zingiberaceae)

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Journal of Systematics and Evolution 2010年第5期48卷 344-349页

作者： w.john KRESS Department of Botany National Museum of Natural HistorySmithsonian Institution Key Laboratory of Tropical Forest Ecology Xishuangbanna Tropical Botanical GardenChinese Academy of Sciences

Polyploidy is a major mechanism of adaptation and speciation in *** varieties of Hedychium villosum,*** and ***,primarily differ in plant and flower *** number suggests that *** is diploid(2n=34)and *** is tetraploid(2n=68).Although the flowers of the two varieties do not have any difference in floral shape,each can be easily distinguished morphologically because the shoots,leaves,and flowers of the tetraploid *** are consistently larger than the diploid *** two varieties each possess distinct geographic ranges and habitats,and no sympatric distribution has been *** tetraploid *** has a broader geographic distribution range and more diverse ecological habitats than the diploid *** two varieties are also completely reproductively isolated due to the non-overlap of their flowering *** two varieties should be recognized as two distinct species as they fulfill the requirements of various species ***,we suggested that the tetraploid *** should be kept as Hedychium villosum and the diploid *** should be renewed to Hedychium tenuiflorum.

关键词： distribution Hedychium villosum morphology polyploidy Zingiberaceae.

The petrogenesis of modern and ophiolitic lavas reconsidered:Ti-V and Nb-Th

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Geoscience Frontiers 2022年第2期13卷 90-109页

作者： john w.Shervais Department of Geosciences Utah State UniversityLoganUT 84322-4500United States

Tectonic discrimination diagrams are a key tool for understanding ancient volcanic rock *** this contribution we compile over 15,000 whole rock compositions to re-evaluate the Ti-V discrimination diagram and compare it to another commonly used tool,the Nb/Yb-Th/Yb *** have reformulated the Ti-V diagram into a log-log plot to distinguish samples more clearly at lower *** compilation shows that MORB are dominated by Ti/V=20-43,whereas juvenile arc tholeiites and boninites are characterized by Ti/V43,although there may be significant overlap with MORB-like ratios for ridgecentered OIB and for some oceanic *** 56%of alkaline OIB have Ti/V>***-arc basins are dominantly *** models show that MORB and juvenile arc volcanics most likely formed under different fO;conditions,but are permissive of similar fO_(2)if the arc rocks form by much higher melt *** Nb/Yb ***/Yb plot clearly distinguishes most oceanic basalts(MORB,plateaux,OIB)from subduction-related volcanic rocks(boninite,juvenile arc tholeiite,calc-alkaline)and from flood *** propose here a new two-proxy diagram of Ti/V ***/Nb,which incorporates the advantages of both.

关键词： Ophiolite Discrimination diagrams Trace element geochemistry Vanadium

PRESSURE-VELOCITY EQUILIBRIUM HYDRODYNAMIC MODELS

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Acta Mathematica Scientia 2010年第2期30卷 563-594页

作者： john w.Grove Computational Physics Group Computer Computationaland Statistical Sciences DivisionCCS-2 MS D413Los Alamos National Laboratory

This article describes mathematical models for phase separated mixtures of materials that are in pressure and velocity equilibrium but not necessarily temperature equilibrium. General conditions for constitutive model... 详细信息

关键词： Euler equations multiple phase mixtures non-equilibrium temperature mixtures

The multiple actions of testosterone in men： nature knows best

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Asian Journal of Andrology 2014年第2期16卷 266-267页

作者： john w Funder Prince Henry's Institute Clayton Victoria Australia

In male hormone replacement therapy Finkelstein et aL show that testosterone rather than synthetic ＂pure＂ androgens should be prescribed. Testosterone is converted to the superactive androgen dihydrotestosterone and...

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Generalizing J_2 flow theory: Fundamental issues in strain gradient plasticity

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Acta Mechanica Sinica 2012年第4期28卷 1078-1086页

作者： john w. Hutchinson School of Engineering and Applied Sciences Harvard University

It has not been a simple matter to obtain a sound extension of the classical J2 flow theory of plasticity that incorporates a dependence on plastic strain gradients and that is capable of capturing size-dependent behaviour of metals at the micron scale. Two classes of basic extensions of classical J2 theory have been proposed： one with increments in higher order stresses related to increments of strain gradients and the other characterized by the higher order stresses themselves expressed in terms of increments of strain gradients. The theories proposed by Muhlhans and Aifantis in 1991 and Fleck and Hutchinson in 2001 are in the first class, and, as formulated, these do not always satisfy thermodynamic requirements on plastic dissipation. On the other hand, theories of the second class proposed by Gudmundson in 2004 and Gurtin and Anand in 2009 have the physical deficiency that the higher order stress quantities can change discontinuously for bodies subject to arbitrarily small load changes. The present paper lays out this background to the quest for a sound phenomenological extension of the rateindependent J2 flow theory of plasticity to include a de- pendence on gradients of plastic strain. A modification of the Fleck-Hutchinson formulation that ensures its thermo- dynamic integrity is presented and contrasted with a comparable formulation of the second class where in the higher or- der stresses are expressed in terms of the plastic strain rate. Both versions are constructed to reduce to the classical J2 flow theory of plasticity when the gradients can be neglected and to coincide with the simpler and more readily formulated J2 deformation theory of gradient plasticity for deformation histories characterized by proportional straining.

关键词： Strain gradient plasticity Deformation plasticity J2 flow theory of plasticity

An Improved Evolvable Oscillator and Basis Function Set for Control of an Insect-Scale Flapping-wing Micro Air Vehicle

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Journal of Computer Science & Technology 2012年第5期27卷 966-978页

作者： john C.Gallagher Michael w.Oppenheimer Department of Computer Science and Engineering Wright State University Control Sciences Branch Air Force Research Laboratory

This paper introduces an improved evolvable and adaptive hardware oscillator design capable of supporting adaptation intended to restore control precision in damaged or imperfectly manufactured insect-scale flapping-wing micro air vehicles. It will also present preliminary experimental results demonstrating that previously used basis function sets may have been too large and that significantly improved learning times may be achieved by judiciously culling the oscillator search space. The paper will conclude with a discussion of the application of this adaptive, evolvable oscillator to full vehicle control as well as the consideration of longer term goals and requirements.

关键词： evolvable and adaptive hardware micro air vehicle evolutionary algorithm

Normal compression wave scattering by a permeable crack in a fluid-saturated poroelastic solid

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Acta Mechanica Sinica 2017年第2期33卷 356-367页

作者： Yongjia Song Hengshan Hu john w. Rudnicki Department of Astronautics and Mechanics Harbin Institute of Technology Harbin 150001 China Department of Civil and Environmental Engineering Northwestern University Evanston Illinois 60208 USA Department of Mechanical Engineering Northwestern University Evanston Illinois 60208 USA

A mathematical formulation is presented for the dynamic stress intensity factor (mode I) of a finite permeable crack subjected to a time-harmonic propagating longitudinal wave in an infinite poroelastic solid. In particular, the effect of the wave-induced fluid flow due to the presence of a liquid-saturated crack on the dynamic stress intensity factor is analyzed. Fourier sine and cosine integral transforms in conjunction with Helmholtz potential theory are used to formulate the mixed boundary-value problem as dual integral equations in the frequency domain. The dual integral equations are reduced to a Fredholm integral equation of the second kind. It is found that the stress intensity factor monotonically decreases with increasing frequency, decreasing the fastest when the crack width and the slow wave wavelength are of the same order. The characteristic frequency at which the stress intensity factor decays the fastest shifts to higher frequency values when the crack width decreases.

关键词： Poroelasticity Biot's theory Finite crack Dynamic stress intensity factor

Complement:a global immunometabolic regulator in amyotrophic lateral sclerosis

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Neural Regeneration Research 2021年第6期16卷 1210-1211页

作者： Martin w.Lo john D.Lee School of Biomedical Sciences Faculty of MedicineThe University of QueenslandSt LuciaQueenslandAustralia

Recently,McDonald et al.(2020)proposed that complement causes a metabolic switch to lipid consumption in amyotrophic lateral sclerosis(ALS),which raises the possibility of complement as a global immunometabolic *** ALS,neuromuscular degeneration occurs concurrently with complement-mediated inflammation,glucose intolerance,and elevated lipid ***,complement is being increasingly recognized as a metabolic regulator that can induce insulin resistance and alter fuel source ***,the authors propose that chronic complement activation may be driving metabolic reprogramming in ALS,which has broad implications for the field of immunometabolism and would be the first mechanistic explanation of the“lipid switch”in ***,it suggests that complement can drive a global shift in resources during inflammation,in which glucose is redirected from peripheral tissues to immune cells to support their inflammatory actions.

关键词： inflammation metabolism elevated