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2077篇 您的检索式:作者名="Walther"
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1塔里木河中游胡杨与灰叶胡杨气体交换特性对比研究显示文摘在自然条件下利用Li-6400光合作用系统对塔里木河中游地区的天然胡杨、灰叶胡杨净光合速率(Pn)、气孔导度(Gs)、胞间CO2浓度(Ci)、蒸腾速率(Tr)和水分利用效率(WUE)等生理指标进行测定分析,探讨它们对外界干旱环境适应的生理特性,为进一步研究胡杨、灰叶胡杨的光合水分生理特性,以及保护恢复塔里木河流域的天然胡杨林提供依据。结果表明:(1)在整个光合日变化进程中,胡杨的日平均Pn、Gs、Tr以及WUE均高于灰叶胡杨。(2)胡杨和灰叶胡杨的净光合速率日变化均呈'双峰'曲线并存在光合'休眠'现象。(3)胡杨、灰叶胡杨在正午时分出现的Pn下降主要是受到气孔限制的影响既气孔限制值增大、胞间CO2浓度减小;傍晚时分出现的光合速率下降主要是因受到外界光照强度减弱,既受非气孔限制影响较大。(4)决定胡杨和灰叶胡杨Pn日变化的环境因子作用大小均为:光量子通量密度(PPFD)>气孔导度(Gs)>空气相对湿度(RH)>气温(Tair);决定胡杨与灰叶胡杨Tr日变化的环境因子作用大小顺序分别为:气温(Tair)>光量子通量密度(PPFD)>气孔导度(Gs)>空气相对湿度(RH)和光量子通量密度(PPFD)>气温(Tair)>气孔导度(Gs)>空气相对湿度(RH)。研究认为,胡杨与灰叶胡杨为适应干旱半干旱区的环境,在长期适应过程中形成了不同的生理生态对策,胡杨主要是通过调节Gs来有效控制蒸腾失水,提高WUE,进而适应干旱环境;灰叶胡杨主要是通过高蒸腾耗水,降低WUE来减少干旱环境对自身的伤害。张志刚 李宏 DENNY WALTHER 杨婵婵 郭光华 2012西北植物学报2012,32,12:19
2One stop shop:backbones trees for important phytopathogenic genera:Ⅰ(2014)显示文摘Many fungi are pathogenic on plants and cause significant damage in agriculture and forestry.They are also part of the natural ecosystem and may play a role in regulating plant numbers/density.Morphological identification and analysis of plant pathogenic fungi,while important,is often hampered by the scarcity of discriminatory taxonomic characters and the endophytic or inconspicuous nature of these fungi.Molecular(DNA sequence)data for plant pathogenic fungi have emerged as key information for diagnostic and classification studies,although hampered in part by non-standard laboratory practices and analytical methods.To facilitate current and future research,this study provides phylogenetic synopses for 25 groups of plant pathogenic fungi in the Ascomycota,Basidiomycota,Mucormycotina(Fungi),and Oomycota,using recent molecular data,up-to-date names,and the latest taxonomic insights.Lineagespecific laboratory protocols together with advice on their application,as well as general observations,are also provided.We hope to maintain updated backbone trees of these fungal lineages over time and to publish them jointly as new data emerge.Researchers of plant pathogenic fungi not covered by the present study are invited to join this future effort.Bipolaris,Botryosphaeriaceae,Botryosphaeria,Botrytis,Choanephora,Colletotrichum,Curvularia,Diaporthe,Diplodia,Dothiorella,Fusarium,Gilbertella,Lasiodiplodia,Mucor,Neofusicoccum,Pestalotiopsis,Phyllosticta,Phytophthora,Puccinia,Pyrenophora,Pythium,Rhizopus,Stagonosporopsis,Ustilago and Verticillium are dealt with in this paper.Kevin D.Hyde R.Henrik Nilsson S.Aisyah Alias Hiran A.Ariyawansa Jaime E.Blair Lei Cai Arthur W.A.M.de Cock Asha J.Dissanayake Sally L.Glockling Ishani D.Goonasekara Michal Gorczak Matthias Hahn Ruvishika S.Jayawardena Jan A.L.van Kan Matthew H.Laurence C.AndréLévesque Xinghong Li Jian-Kui Liu Sajeewa S.N.Maharachchikumbura Dimuthu S.Manamgoda Frank N.Martin Eric H.C.McKenzie Alistair R.McTaggart Peter E.Mortimer Prakash V.R.Nair Julia Pawlowska Tara L.Rintoul Roger G.Shivas Christoffel F.J.Spies Brett A.Summerell Paul W.J.Taylor Razak B.Terhem Dhanushka Udayanga Niloofar Vaghefi Grit Walther Mateusz Wilk Marta Wrzosek Jian-Chu Xu JiYe Yan Nan Zhou 2014Fungal Diversity2014,,4:3
3Towards a versatile point-of-care systemcombining femtosecond laser generatedmicrofluidic channels and direct laserwritten microneedle arrays显示文摘Microneedle-based microfluidic systems have a great potential to become well-accepted medical devices for simple,accurate,and painless drug delivery and lab-on-a-chip diagnostics.In this work,we report on a novel hybrid approach combining femtosecond direct laser written microneedles with femtosecond laser generated microfluidic channels providing an important step towards versatile medical point-of-care systems.Hollow microneedle arrays are fabricated by a laser system designed for two-photon polymerization applications.Compression tests of two different types of truncated cone-shaped microneedle arrays prepared from OrmoComp^(■)give information about the microneedle mechanical strength,and the results are compared to skin insertion forces.Three-dimensional microchannels are directly created inside PMMA bulk material by an ultrashort pulse laser system with vertical channels having adjustable cross-sectional areas,which allow attaching of microneedles to the microfluidic system.A comprehensive parameter study varying pulse duration and repetition rate is performed on two-photon polymerization to identify an optimal laser power range for fabricating microneedles using the same pulse duration and repetition rate as for microchannels.This addresses the advantage of a single laser system process that overcomes complex fabrication methods.A proof of concept flow test with a rhodamine B dye solution in distilled water demonstrates that the combination of microneedles and microchannels qualifies for microfluidic injection and extraction applications.Anika Trautmann Gian-Luca Roth Benedikt Nujiqi Thomas Walther Ralf Hellmann 2019Microsystems & Nanoengineering2019,5,1:3
4Composition and Three-Dimensional Architecture of the Dengue Virus Replication and Assembly Sites显示文摘Sonja Welsch Sven Miller Ines Romero-Brey Andreas Merz Christopher K.E. Bleck Paul Walther Stephen D. Fuller Claude Antony Jacomine Krijnse-Locker Ralf Bartenschlager 2009Cell Host & Microbe2009,,:2
5The life of lipid droplets显示文摘Tobias C. Walther Robert V. Farese 2008BBA - Molecular and Cell Biology of Lipids2008,,6:2
6Do security analysts exhibit persistent differences in stock picking ability?显示文摘Michael B. Mikhail Beverly R. Walther Richard H. Willis 2004Journal of Financial Economics2004,,1:2
7The financial reporting environment: Review of the recent literature显示文摘Anne Beyer Daniel A. Cohen Thomas Z. Lys Beverly R. Walther 2010Journal of Accounting and Economics2010,,2:2
8Basecalling with LifeTrace显示文摘Walther D Bantha G Morris M 0,,:2
9Mitochondrial Genome Instability and ROS Enhance Intestinal Tumorigenesis in APC Min/+ Mice显示文摘Dong Kyun Woo Paula D. Green Janine H. Santos Anthony D. D'Souza Zenta Walther W. David Martin Brooke E. Christian Navdeep S. Chandel Gerald S. Shadel 2012The American Journal of Pathology2012,,1:2
10Acceleration time in cerebral arteries of preterm and term infants显示文摘Bor M Walther FJ Sims ME 1990J Clin Ultrasound1990,18,3:1
11The natural history of renal lesions in VHL disease: a serial CT study in 28 patients 显示文摘Choyke PL Walther MM Zbar B 1992ARJ1992,159,6:1
12Downregulation of the reduced folate carrier transport activity by Phenobarbital type cytochrome P450 inducers and protein kinase C activators显示文摘Sandra H Carsten K Walther H 2007Biochimica et Biophysica Acta (BBA)-Biomembranes2007,3,23:1
13Co-regulation of Salmonella enterica genes required for virulence and resistance to antimicrobial peptides by SlyA and PhoP/PhoQ显示文摘Navarre WW Halsey TA Walthers D 2005Mol Microbiol2005,56,2:1
14MACC1 controls Met:what a difference an Sp1 site makes显示文摘Stein U Smith J Walther W 2009Cell Cycle2009,8,15:1
15Tumor necrosis factoralpha and expression of the multidrug resistance-associated genes LRP and MRP显示文摘Stein U Walther W Laurencot C M 1997J Natl Cancer Inst1997,89,11:1
16The effects of hypoxia,alkalinity and neurochemicals on hatching of Atlantic salmon (Salmo salar) eggs显示文摘OppenhBerntsen D O Bogsnes A Walther B T 1990Aquaculture1990,86,:1
17Synchronous multicentric extra-adrenal pheochromocytoma:Implications for management 显示文摘Avila N A Doppman J L Walther M M 1999Clin Radiol1999,54,11:1
18Pheochromocytoma:evaluation,diagnosis,and treatment 显示文摘Walther MM Keiser HR Linehan WM 1999World Journal of Urology1999,17,:1
19Selective Visual Attention Enables Learning and Recognition of Multiple Objects in Cluttered Scenes显示文摘Walther D Rutishauser U Koch C 2005Computer Vision and Image Understanding2005,100,12:1
20Total endoscopic off-pump coronary artery bypass grafting显示文摘Falk V Diegeler A Walther T 2000Heart Surg Forum2000,31,1:1
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