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43篇 您的检索式:作者名="Spreer"
    题名 作者 年代 出处 被引量
1Assessing crop water stress of winter wheat by thermography under different irrigation regimes in North China Plain显示文摘Thermal imaging can be used as an indicator of water stress due to the closure of stomatal aperture.In this paper,we analyzed the robustness and sensitivity of thermography of winter wheat in the North China Plain.The seasonal and diurnal variations of Crop Water Stress Index(CWSI)were evaluated.Five treatments were applied by means of irrigation,with plots receiving 100%of ETo(DI),50%(D50),16%(D16)and no irrigation(NI).A high correlation was found between stomatal conductance(gs)and CWSI,depending on the phenological stage of the crop with R2=0.44 at pre-heading stage and R2=0.77 at post-heading stage.In addition,a high correlation between yield and CWSI at different growth stages indicates that thermography can predict yield.Hourly measurements of canopy temperature were taken to study the effect of the time of day on image acquisition and it was found that midday was the most appropriate time.These results should assist in designing precision irrigation scheduling for setting the threshold values.Shamaila Zia Du Wenyong Wolfram Spreer Klaus Spohrer He Xiongkui Joachim Müller 2012International Journal of Agricultural and Biological Engineering2012,5,3:4
2Monitoring physiological responses to water stress in two maize varieties by infrared thermography显示文摘Water stress is one of the main causes of yield reductions in crops,especially in arid and semi-arid regions where the water supply is limited.Plant water status is frequently assessed by pre-dawn leaf water potential(ΨPD)or leaf stomata conductance(gL)measurements,in support of advanced irrigation scheduling.However,both methods are time and labour consuming.A non-invasive approach to water status detection is the use of infrared thermography(IRT).This experiment was conducted in a greenhouse on two potted maize varieties under irrigated and non-irrigated conditions,and the measurements began when the crop had reached its twelve leaf stage.In order to establish the IRT measurements for detecting the water status of maize,an IRT-based crop water stress index(CWSI)was calculated and compared with simultaneously measuredΨPD and gL data.Good correlations were found between CWSI and gL data(r2=0.71&0.81),as well between CWSI andΨPD data(r2=0.53&0.81).These results highlight the appropriateness of infrared thermal imagery to detect and differentiate between the crop water statuses of different genotypes.Shamaila Zia Klaus Sophrer Du Wenyong Wolfram Spreer Giuseppe Romano He Xiongkui Joachim Müller 2011International Journal of Agricultural and Biological Engineering2011,4,3:3
3Valproate-induced encepha lopathy: assessment with MR imaging and 1H MR spectros copy显示文摘Ziyeh S Thiel T Spreer J eta| 2002Epilepsia2002,43,9:1
4Radialogical and histological findings in spinal intramedullary angiolipoma显示文摘Klisch J Spreer J Bloss HG 1999Neuroradiology1999,41,8:1
5Rapid and fully automated visualization of subdural electrodes in the presurgical evaluation of epilepsy patients显示文摘Kovalev D Spreer J Honegger J 2005AJNR Am J Neuroradiol2005,26,:1
6Unsuspected atypical hemispheric dominance for language as determined by fMRI显示文摘Spreer J Quiske A Altenmuller DM 2001Epllepsia2001,42,:1
7Differential effect of side of temporal lobe epilepsy on lateralization of hippocampal, temporolateral, and inferior frontal activation patterns during a verbal episodic memory task显示文摘WAGNER K FRINGS L SPREER J 2008Epilepsy Behay2008,12,:1
8Parkes Weber or Klippel-Trenaunay syndrome? Non-invasive diagnosis with MR projection angiography显示文摘Ziyeh S Spreer J R(o)ssler J 2004Eur Radiol2004,14,11:1
9Radiological and histological findings in spinal intramedullary angiolipoma显示文摘Klisch J Spreer J Bloss HG 1999Neuroradiology1999,41,8:1
10Matrix metalloproteinase- 9 deficiency impairs host defense mechanisms against Streptococcus pneumoniae in a mouse model of bacterial meningitis 显示文摘B6ttcher T Spreer A Azeh I 2003Neurosci Lett2003,338,3:1
11Modelling the relationship between peel colour and the quality of fresh mango fruit using Random Forests显示文摘Shinji Fukuda Eriko Yasunaga Marcus Nagle Kozue Yuge Vicha Sardsud Wolfram Spreer Joachim Müller 2014Journal of Food Engineering2014,,:1
12Unsusjpected atypical hemispheric dominance for language as detemained by tMRI显示文摘Spreer J Quske A Ahenmuller DM 2001Epilepsia2001,42,7:1
13A probable cause of paradoxical thrombosis in zygomycosis显示文摘RUCHEL R ELSNER C SPREER A 2004Mycoses2004,47,:1
14Valproate- induced encepha- lopathy: assessment with MR imaging and 1H MR spectroscopy 显示文摘Ziyeh S Thiel T Spreer J 2002Epilepsia2002,43,9:1
15Remote effects of hippocampal damage on default network connectivity in the human brain显示文摘Frings L Schulze-Bonhage A Spreer J 0,,:1
16Photochemical reduction of CO2 to CO in water using a nickel(Ⅱ) tetra-azamacrocycle complex as catalyst 显示文摘Grant J L Goswarni K Spreer L O 1987J Chem Soc Dalton Trans1987,,9:1
17Photochamieal reduction of carbon dioxide using nickel tetraazamaerocycles 显示文摘Craig C A Spreer L O Otovos J W 1990J Phys Chem1990,94,20:1
18Valproate-induced encepha-lopathy : assessment with MR imaging and 1H MR spectroscopy 显示文摘ZIYEH S THIEL T SPREER J 2002Epilepsia2002,43,9:1
19Rapid and fully automated visualization of subdural electrodes in the presurgical evaluation of epilepsy patients显示文摘Kovalev D Spreer J Honegger J 2005AJNR Am J Neuroradiol2005,26,5:1
20Valproate-inducedencephalopathy: assessment with MR imaging and 1H MRspectroscopy显示文摘Ziyeh S Thiel T Spreer J 2002Epilepsia2002,43,9:1
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