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Intraspecific variation in precipitation responses of a widespread C_(4) grass depends on site water limitation

Journal of Plant Ecology 2017年第2期10卷 310-321页

作者： Michael J.Aspinwall Philip A.Fay Christine V.Hawkes David B.Lowry Albina khasanova Jason Bonnette briana k.whitaker Nicholas Johnson Thomas E.Juenger Hawkesbury Institute for the Environment Western Sydney UniversityHawkesbury CampusLocked Bag 1797PenrithNew South Wales 2751Australia USDA-ARS Grassland Soil and Water Research Laboratory 808 East Blackland RdTempleTX 76502USA Department of Integrative Biology University of Texas at Austin1 University StationAustinTX 78712USA Department of Plant Biology Michigan State University612 Wilson RoadEast LansingMI 48824USA

Aims Variation in precipitation strongly influences plant growth,species distributions and genetic *** variation in pheno-typic plasticity,the ability of a genotype to alter its growth,morphol-ogy or physiology in response to the environment,could influence species responses to changing precipitation and climate *** this,the patterns and mechanisms of intraspecific varia-tion in plasticity to variable precipitation,and the degree to which genotype responses to precipitation are influenced by variation in edaphic conditions,remain poorly ***,we determined whether genotypes of a widespread C_(4) grass(Panicum virgatum L.,switchgrass)varied in aboveground productivity in response to changes in precipitation,and if site edaphic conditions modified genotype aboveground productivity responses to *** also determined if genotype productivity responses to precipitation are related to plasticity in underlying growth and phenological *** Nine *** genotypes originating from an aridity gradient were grown under four treatments spanning the 10th to the 90th percentiles of annual precipitation at two sites in central Texas:one site with deep,fine-textured soils and another site with shallow,coarse-textured *** measured volumetric soil water content(VWC),aboveground net primary productivity(ANPP),tiller pro-duction(tiller number),average tiller mass,canopy height,leaf area index(LAi)and flowering time on all plants at both sites and examined genotype responses to changes in *** Findings Across precipitation treatments,VWC was 39%lower and more variable at the site with shallow,coarse-textured soils compared to the site with deep,fine-textured *** averaged across genotypes and precipita-tion treatments was also 103%higher at the site with deep,fine-textured soils relative to the site with shallow,coarse-textured soils,indicating substantial differences in site water limitation.W

关键词： climate change Panicum virgatum phenology phenotypic plasticity precipitation

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Measurement,associations,patterns,and promotion:Unveiling vital areas in physical activity epidemiology

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Journal of Sport and Health Science 2024年第5期13卷 605-607页

作者： kara M.whitaker Guest editor Michael J.LaMonte Department of Health&Human Physiology University of IowaIowa CityIA 52242USA Department of Epidemiology and Environmental Health University of BuffaloBuffaloNY 14214 USA

Physical activity(PA)epidemiology first emerged as a new field of study around the 1950s with publication of seminal investigations on London civil servants1 and has continued to evolve as a scientific discipline to present *** subdiscipline of epidemiology studies the frequencies,distributions,and dynamics of PA and its impact on human health,morbidity,and *** over the past 75 years has demonstrated numerous health benefits of *** on these research findings,the World Health Organization recommends adults aged 18-64 years engage in at least 150-300 min of moderate-intensity aerobic PA per week,or at least 75-150 min of vigorous-intensity aerobic PA per week,or a combination of both intensities.

关键词： epidemiology promotion continued

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Acoustic Velocities and Elastic Properties of Pyrite (FeS2) to 9.6 GPa

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Journal of Earth Science 2010年第5期21卷 792-800页

作者： Matthew L whitaker Mineral Physics Institute Stony Brook University Geodynamics Research Center Ehime University

Ultrasonic interferometry was utilized in conjunction with synchrotron-based X-ray diffraction and X-radiographic imaging to determine the compressional and shear wave velocities and unlt-cdl volumes of pyrite （FeS2） at room temperature and pressures up to 9.6 GPa. Fitting all of the experimental volume and velocity data to third-order finite-strain equations yielded the adiabatic zero-pressure bulk and shear moduli and their first pressure derivatives： ks0=138.9（7） GPa, Go=U2.3（3） GPa, （δkS0/δP）T=kS0＇=6.0（1）, （δG0/δP）T=G0＇=3.0（〈1）, where the numbers in parentheses represent the 1δ uncertainty in the last significant digit. These results are in good agreement with several previous static compression studies on this material but differ quite strongly from the results obtained via first principles calculations. This study presents the first direct measurement of the bulk shear properties of this material.

关键词： mineral physics ultrasonic interferometry high pressure iron sulfide elastic property equation of state.

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GUEST EDITORIAL

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Journal of Systems Science and Systems Engineering 2006年第2期15卷 129-130页

作者： Rozann whitaker Creative Decisions Foundation Pittsburgh PA USA

The papers included in this issue were selected from numerous original works delivered at the Eighth international Symposium of the Analytic Hierarchy Process （ISAHP） in Honolulu, Hawaii, in the summer of 2005. They have been carefully edited and refined so that the reader will find them to be both informative and enjoyable reading. Due to space limitations other papers presented at that meeting may appear in subsequent issues of this distinguished journal. ,

关键词： AHP ANP GUEST EDITORIAL

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Development of biovigilance in the United States

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中国输血杂志 2010年第10期23卷 762-763页

作者： B.I.whitaker American Association of Blood Banks

Background Hemovigilance systems have been in existence for over 10 years,a consequence of the transmission of HIV through the blood supply and the recognition of the impact of other serious adverse events associated with transfusion on the safety of blood *** systems now have been implemented globally in most developed countries,with a few exceptions,to monitor the adverse events and incidents associated with blood donation and transfusion.'Biovigilance' broadens the scope beyond blood to incorporate monitoring of adverse events associated with tissue,organs and cellular *** the USA,while numerous separate programs existed to ensure biological safety,there was no comprehensive national Hemovigilance or broader biovigilance system. Beginning with the promulgation of the term 'biovigilance',the framework for a national biovigilance program began.

关键词：美国 ce系统血液供应艾滋病毒输血事件

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The influence of metabolic syndrome and its components on the development of nephrolithiasis

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Asian Journal of Urology 2018年第4期5卷 215-222页

作者： Carter Boyd kyle Wood Dustin whitaker Dean G.Assimos Department of Urology University of Alabama-BirminghamBirminghamALUSA University of Alabama-Birmingham School of Medicine BirminghamALUSA

The prevalence of kidney stone disease is increasing,afflicting 7%-11% of the United States *** systemic conditions,including obesity and diabetes,are also on the ***,the literature has demonstrated a strong association between metabolic syndrome,its components,and kidney stone *** this article,we aim to review the associations of metabolic syndrome and nephrolithiasis,discussing the pathophysiology,urinary parameters,and clinical *** this knowledge,urologists will have a more comprehensive understanding of this complex population of metabolic stone formers enabling improved patient management and treatment of stone disease.

关键词： Diabetes kidney stone Metabolic syndrome Obesity Oxalate Uric acid Urolithiasis

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解析贝蒂·弗里丹《女性的奥秘》

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2020年

作者： Elizabeth whitaker

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PIM kinase inhibition:co-targeted therapeutic approaches in prostate cancer

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Signal Transduction and Targeted Therapy 2020年第1期5卷 2430-2439页

作者： Sabina Luszczak Christopher kumar Vignesh krishna Sathyadevan Benjamin S.Simpson kathy A.Gately Hayley C.whitaker Susan Heavey Molecular Diagnostics and Therapeutics Group University College LondonLondonUK Trinity Translational Medicine Institute St.James’s Hospital DublinDublin 8DublinIreland

PIM kinases have been shown to play a role in prostate cancer development and progression,as well as in some of the hallmarks of cancer,especially proliferation and *** upregulation in prostate cancer has been correlated with decreased patient overall survival and therapy *** efforts to inhibit PIM with monotherapies have been hampered by compensatory upregulation of other pathways and drug toxicity,and as such,it has been suggested that co-targeting PIM with other treatment approaches may permit lower doses and be a more viable option in the ***,we present the rationale and basis for cotargeting PIM with inhibitors of PI3k/mTOR/AkT,JAk/STAT,MYC,stemness,and RNA Polymerase I transcription,along with other therapies,including androgen deprivation,radiotherapy,chemotherapy,and *** combined approaches could potentially be used as neoadjuvant therapies,limiting the development of resistance to treatments or sensitizing cells to other *** determine which drugs should be combined with PIM inhibitors for each patient,it will be key to develop companion diagnostics that predict response to each co-targeted option,hopefully providing a personalized medicine pathway for subsets of prostate cancer patients in the future.

关键词： targeted doses viable

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Video and Television Engineering 3rd Edition

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2000年

作者： k. Blair Benson Jerry C. whitaker

来源：畅想之星图书光盘版（南... 评论

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动画的时间掌握

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作者： whitaker等

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