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1248篇 您的检索式:作者名="RATCLIFF"
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1Relationship between dew presence and Bassia dasyphylla plant growth显示文摘Dew has been recognized for its ecological significance and has also been identified as an additional source of water in arid zones.We used factorial control experiment,under dew presence in the field,to explore photosynthetic performance,water status and growth response of desert annual herbage.Bassia dasyphylla seedlings were grown in contrasting dew treatments (dew-absent and dew-present) and different watering regimes (normal and deficient).The effects of dew on the water status and photosynthetic performance of Bassia dasyphylla,grown in a desert area of the Hexi Corridor in Northwestern China,were evaluated.The results indicated the presence of dew significantly increased relative water content (RWC) of shoots and total biomass of plants in both water regimes,and enhanced the diurnal shoot water potential and stomatal conductance in the early morning,as well as photosynthetic rate,which reached its maximum only in the water-stressed regime.The presence of dew increased aboveground growth of plants and photosynthate accumulation in leaves,but decreased the root-to-shoot ratio in both water regimes.Dew may have an important role in improving plant water status and ameliorating the adverse effects of plants exposed to prolonged drought.YanLi ZHUANG Sophia RATCLIFFE 2012Journal of Arid Land2012,4,1:21
2氮素水平对茶树新梢叶片代谢谱及其昼夜变化的影响显示文摘茶树叶片中含有丰富的代谢产物,氨基酸、茶多酚和咖啡碱是决定茶叶品质的重要成分。本文结合基于1H-核磁共振(1H-NMR)的代谢组学非靶标分析与通过高效液相色谱法进行的定量靶标分析两种方法,比较白天和夜晚所取不同施氮水平的茶树新梢第2叶的代谢产物差异,探讨了基于1H-NMR的代谢组学研究方法应用于茶叶品质成分形成机理研究的可行性。结果表明,白天和夜晚所取茶树新梢第2叶代谢组差异较大,可以显著分离,区分两个样本的主要组分为茶氨酸、葡萄糖和蔗糖,而不同施氮水平下茶树新梢第2叶代谢组没有显著差异。高效液相色谱定量分析的结果表明,施氮水平对主要游离氨基酸组分和儿茶素组分均有影响,且存在昼夜差别。杨亦扬 马立锋 黎星辉 R.George Ratcliffe Nicholas J.Kruger 阮建云 2013茶叶科学2013,33,6:19
3Fecal Microbiome and Volatile Organic Compound Metabolome in Obese Humans With Nonalcoholic Fatty Liver Disease显示文摘Maitreyi Raman Iftikhar Ahmed Patrick M. Gillevet Chris S. Probert Norman M. Ratcliffe Steve Smith Rosemary Greenwood Masoumeh Sikaroodi Victor Lam Pam Crotty Jennifer Bailey Robert P. Myers Kevin P. Rioux 2013Clinical Gastroenterology and Hepatology2013,,7:5
4A review of solar type Ⅲ radio bursts显示文摘Solar type Ⅲ radio bursts are an important diagnostic tool in the understanding of solar accelerated electron beams. They are a signature of propagating beams of nonthermal electrons in the solar atmosphere and the solar system. Consequently, they provide information on electron acceleration and transport, and the conditions of the background ambient plasma they travel through. We review the observational properties of type Ⅲ bursts with an emphasis on recent results and how each property can help identify attributes of electron beams and the ambient background plasma. We also review some of the theoretical aspects of type Ⅲ radio bursts and cover a number of numerical efforts that simulate electron beam transport through the solar corona and the heliosphere.Hamish Andrew Sinclair Reid Heather Ratcliffe 2014Research in Astronomy and Astrophysics2014,14,7:4
5Regulation of angiogenesis by hypoxia: role of the HIF system显示文摘Pugh C W Ratcliffe P J 2003Nat Med2003,9,6:2
6Glyphosate toxicity and the effects of long - term vegetation control on soil microbial communities 显示文摘Busse Matt D Ratcliff Alice W Shestak Carol J Powers Robert F 2001Soil Biology and Biochemistry2001,33,:2
7The Expression and Distribution of the Hypoxia-Inducible Factors HIF-1α and HIF-2α in Normal Human Tissues, Cancers, and Tumor-Associated Macrophages显示文摘Katherine L. Talks Helen Turley Kevin C. Gatter Patrick H. Maxwell Christopher W. Pugh Peter J. Ratcliffe Adrian L. Harris 2000The American Journal of Pathology2000,,2:2
8Effect of acute physical and psychological stress on gut autonomic innervation in irritable bowel syndrome显示文摘Charles D.R. Murray Joanna Flynn Laura Ratcliffe Meron R. Jacyna Michael A. Kamm Anton V. Emmanuel 2004Gastroenterology2004,,6:2
9《社区再投资法》:成效显著,但仍需改进显示文摘1977年出台的《社区再投资法》是为了解决外界对金融机构的经济性歧视行为的指责。它引导存款类金融机构通过“安全、稳健运营”来“满足其所服务社区的信贷需求”。‘在这些指导原则和贯彻这些原则的监管方法的引导下,随着时间的推移,《社区再投资法》已被证明具有较好的灵活性和适应性。Roberto Quercia Janneke Ratcliffe Michael A.Stegman 孙天琦 杨岚 张晓东 刘社芳 周彦君 孙炎炜 2010西部金融2010,,2:2
10Regulation of angiogenesis by hypoxia: role of the HIF system显示文摘Pugh CW Ratcliffe PJ 2003Nat Med2003,9,:1
11Comparativc study of hemocytes and associated cells of some medically important dipterans显示文摘KAAYA G P RATCLIFFE N A 1982J Morphol1982,173,3:1
12Albumin mi crospheres for intra articular drug delivery: investigation of their retention in normal and arthritis knee joints of rabbits显示文摘Ratcliffe JH Hunneyball IM Wilson CG 1987J Pharm Pharmacol1987,39,:1
13Regulation of angiogenesis by hypoxia: Role of the HIF system显示文摘Pugh CW Ratcliffe PJ 2003Nat Med2003,9,:1
14Customers as oral participants in a service setting 显示文摘Harris K Baron S Ratcliffe J 1995Journal of Services Marketing1995,9,4:1
15An in vivo nuclear magnetic resonance investigation of ion transport in maize (Zea mays)and spartina anglica roots during exposure to high salt concentrations显示文摘Spichett C M Smirnoff N Ratcliffe R G 0,,:1
16The Expression and Distribution of the Hypoxia-Inducible Factors HIF-1α and HIF-2α in Normal Human Tissues, Cancers, and Tumor-Associated Macrophages显示文摘Katherine L. Talks Helen Turley Kevin C. Gatter Patrick H. Maxwell Christopher W. Pugh Peter J. Ratcliffe Adrian L. Harris 2000The American Journal of Pathology2000,,2:1
17Management of gestational diabetes mellitus显示文摘Turok DK Ratcliffe SD Baxley EG 2003Am Fam Physician2003,68,9:1
18Regulation of angiogenesis by hypoxia role of the HIF system显示文摘Pugh CW Ratcliffe PJ 2003Nat Med2003,9,6:1
19What 'ideas- about-science' school be taught in school science !A Del- phi study of the expert community 显示文摘OsborneJ Collins S Ratcliffe M tal 2003Journal of Re-search in Science Teaching2003,40,7:1
20The von hippel - lindau tumor suppressor, hypoxia - inducible factor - 1 ( HIF - 1 ) degradation and cancer pathogenesis显示文摘Pugh CW Ratcliffe PJ 2003Semin Cancer Biol2003,13,1:1
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