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60篇 您的检索式:作者名="Heather Roberts"
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1Current Status and Future Challenges of Weather Radar Polarimetry: Bridging the Gap between Radar Meteorology/Hydrology/Engineering and Numerical Weather Prediction显示文摘After decades of research and development, the WSR-88 D(NEXRAD) network in the United States was upgraded with dual-polarization capability, providing polarimetric radar data(PRD) that have the potential to improve weather observations,quantification, forecasting, and warnings. The weather radar networks in China and other countries are also being upgraded with dual-polarization capability. Now, with radar polarimetry technology having matured, and PRD available both nationally and globally, it is important to understand the current status and future challenges and opportunities. The potential impact of PRD has been limited by their oftentimes subjective and empirical use. More importantly, the community has not begun to regularly derive from PRD the state parameters, such as water mixing ratios and number concentrations, used in numerical weather prediction(NWP) models.In this review, we summarize the current status of weather radar polarimetry, discuss the issues and limitations of PRD usage, and explore potential approaches to more efficiently use PRD for quantitative precipitation estimation and forecasting based on statistical retrieval with physical constraints where prior information is used and observation error is included. This approach aligns the observation-based retrievals favored by the radar meteorology community with the model-based analysis of the NWP community. We also examine the challenges and opportunities of polarimetric phased array radar research and development for future weather observation.Guifu ZHANG Vivek N.MAHALE Bryan J.PUTNAM Youcun QI Qing CAO ANDrew D.BYRD Petar BUKOVCIC Dusan S.ZRNIC Jidong GAO Ming XUE Youngsun JUNG Heather D.REEVES Pamela L.HEINSELMAN AlexANDer RYZHKOV Robert D.PALMER Pengfei ZHANG Mark WEBER Greg M.MCFARQUHAR Berrien MOORE III Yan ZHANG Jian ZHANG J.VIVEKANANDAN Yasser AL-RASHID Richard L.ICE Daniel S.BERKOWITZ Chong-chi TONG Caleb FULTON Richard J.DOVIAK 2019Advances in Atmospheric Sciences2019,36,6:9
2Understanding the effects of radiative preheat and self-emission from shock heating on equation of state measurement at 100s of Mbar using spherically converging shock waves in a NIF hohlraum显示文摘Over the last six years many experiments have been done at the National Ignition Facility to measure the Hugoniot of materials,such asCHplastic at extreme pressures,up to 800 Mbar.The“Gbar”design employs a strong spherically converging shock launched through a solid ball of material using a hohlraum radiation drive.The shock front conditions are characterized using x-ray radiography.In this paper we examine the role of radiation in heating the unshocked material in front of the shock to understand the impact it has on equation of state measurements and how it drives the measured data off the theoretical Hugoniot curve.In particular,the two main sources of radiation heating are the preheating of the unshocked material by the high-energy kilo-electron-volt x-rays in the hohlraum and the heating of the material in front of the shock,as the shocked material becomes hot enough to radiate significantly.Using our model,we estimate that preheating can reach 4 eV in unshocked material,and that radiation heating can begin to drive data off the Hugoniot significantly,as pressures reach above 400 Mb.Joseph Nilsen Andrea L.Kritcher Madison EMartin Robert E.Tipton Heather D.Whitley Damian C.Swift Tilo Doppner Benjamin L.Bachmann Amy E.Lazicki Natalie B.Kostinski Brian R.Maddox Gilbert W.Collins Siegfried H.Glenzer Roger W.Falcone 2020Matter and Radiation at Extremes2020,5,1:5
3Heart Disease and Stroke Statistics—2011 Update: A Report From the American Heart Association显示文摘Véronique L. Roger Alan S. Go Donald M. Lloyd-Jones Robert J. Adams Jarett D. Berry Todd M. Brown Mercedes R. Carnethon Shifan Dai Giovanni de Simone Earl S. Ford Caroline S. Fox Heather J. Fullerton Cathleen Gillespie Kurt J. Greenlund Susan M. Hailpern 2011Circulation2011,,4:4
4大堡礁和大峡谷世界遗产区的适应性管理显示文摘关于人类和环境相互关系的传统观念正在迅速改变。那种认为人类与自然是相互隔离的,自然资源是取之不尽用之不竭的,而且认为世界是稳定的、可以预测的并且是平衡的旧观点已经过时了。在动态的社会-生态景观中强调学习和灵活性管理为基础的适应性方法的新的理念框架已经迅速初现端倪。我们以两个典型的世界遗产地区(大堡礁和大峡谷)为案例来研究如何在自然资源管理中通过改善科学和社会两个方面的结合来指导多尺度管理系统的变革从而应对和处理人类越来越占据主导的世界中出现的不确定性、风险和变化。Terence P.Hughes Lance H.Gunderson Carl Folke Andrew H.Baird David Bellwood Fikret Berkes Beatrice Crona Ariella Helfgott Heather Leslie Jon Norberg Magnus Nystrm Per Olsson Henrik sterblom Marten Scheffer Heidi Schuttenberg Robert S.Steneck Maria Teng Max Troell Brian Walker James Wilson Boris Worm 丁莉 2007AMBIO-人类环境杂志2007,36,B11:4
5Oxidative stress markers are associated with persistent atrial fibrillation显示文摘Robert B Heather L Irfan S 2007Clin Chem2007,53,9:1
6Evaluation of CHROMagar Candida for Presumptive Identification of Clinically Important Candida Species显示文摘Heather L Powell Crystal A Sand Robert P Rennie 1998Diagn Microbiol Infect Dis1998,32,4:1
7Systemic RNAi in western corn rootworm, Diabrotica virgifera virgifera, does not involve transitive pathways显示文摘Huarong Li Andrew J. Bowling Premchand Gandra Murugesan Rangasamy Heather E. Pence Robert E. McEwan Chitvan Khajuria Blair D. Siegfried Kenneth E. Narva 2018Insect Science2018,25,1:1
8Risk of heart failure in breast cancer patients after anthracycline and trastuzumab treatment:a retrospective cohort study显示文摘Erin J Aiello Bowles Robert Wellman Heather Spencer 2012Journal of the National Cancer Institute2012,104,17:1
9The value of urban tree cover: A hedonic property price model in Ramsey and Dakota Counties, Minnesota, USA显示文摘Heather Sander Stephen Polasky Robert G. Haight 2010Ecological Economics2010,,8:1
10Oxidative Damage Targets Complexes Containing DNA Methyltransferases, SIRT1, and Polycomb Members to Promoter CpG Islands显示文摘Heather M. O’Hagan Wei Wang Subhojit Sen Christina DeStefano Shields Stella S. Lee Yang W. Zhang Eriko G. Clements Yi Cai Leander Van Neste Hariharan Easwaran Robert A. Casero Cynthia L. Sears Stephen B. Baylin 2011Cancer Cell2011,,5:1
11Muscular adaptations in response to three different resistance-training regimens: specificity of repetition maximum training zones显示文摘Gerson E. Campos Thomas J. Luecke Heather K. Wendeln Kumika Toma Fredrick C. Hagerman Thomas F. Murray Kerry E. Ragg Nicholas A. Ratamess William J. Kraemer Robert S. Staron 2002European Journal of Applied Physiology (-)2002,,1:1
12Assessment and Management of Acute Coronary Syndromes (ACS): A Canadian Perspective on Current Guideline-Recommended Treatment – Part 2: ST-Segment Elevation Myocardial Infarction显示文摘David H. Fitchett Pierre Theroux James M. Brophy Warren J. Cantor Jafna L. Cox Milan Gupta Heather Kertland Shamir R. Mehta Robert C. Welsh Shaun G. Goodman 2011Canadian Journal of Cardiology2011,,6:1
13Certification of SRM 1589a PCBs, pesticides, PBDEs, and dioxins/furans in human serum显示文摘Michele M. Schantz Jennifer M. Keller Stefan Leigh Donald G. Patterson Katherine E. Sharpless Andreas Sj?din Heather M. Stapleton Robert Swarthout Wayman E. Turner Stephen A. Wise 2007Analytical and Bioanalytical Chemistry2007,,4:1
14The central role of the P2T receptor in amplification of human platelet activation, aggregation, secretion and procoagulant activity显示文摘Robert F.Storey Heather M.Sanderson Ann E.White Jane A.May Kathryn E.Cameron StanHeptinstall 2001British Journal of Haematology2001,,:1
15Mechanisms of buffer therapy resistance显示文摘Kate M. Bailey Jonathan W. Wojtkowiak Heather H. Cornnell Maria C. Ribeiro Yoganand Balagurunathan Arig Ibrahim Hashim Robert J. Gillies 2014Neoplasia2014,,4:1
16Germline Mutations in BMPR1A/ALK3 Cause a Subset of Cases of Juvenile Polyposis Syndrome and of Cowden and Bannayan-Riley-Ruvalcaba Syndromes *显示文摘Xiao-Ping Zhou Kelly Woodford-Richens Rainer Lehtonen Keisuke Kurose Micheala Aldred Heather Hampel Virpi Launonen Sanno Virta Robert Pilarski Reijo Salovaara Walter F. Bodmer Beth A. Conrad Malcolm Dunlop Shirley V. Hodgson Takeo Iwama Heikki J?rvinen Il 2001The American Journal of Human Genetics2001,,4:1
17Kisspeptin neurons as central processors in the regulation of gonadotro-pin-releasing hormone secretion显示文摘Heather M D Donald K C Robert A S 2006Endocrinology2006,147,3:1
18Online Auction: Going, Going, Gone显示文摘Hof Robert D Green Heather 1999Business-Week1999,,:1
19Risks of congenital malformations and perinatal events among infants exposed to calcium channel and beta-blockers during pregnancy显示文摘Robert LD David E Heather M 2011Pharmacoepidemiol Drug Saf2011,20,2:1
20Synthesis of Methylphosphonic Acid by Marine Microbes: A Source for Methane in the Aerobic Ocean显示文摘William W. Metcalf Benjamin M. Griffin Robert M. Cicchillo Jiangtao Gao Sarath Chandra Janga Heather A. Cooke Benjamin T. Circello Bradley S. Evans Willm Martens-Habbena David A. Stahl Wilfred A. van der Donk 20122012 (6098)2012,,6098:1
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