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1185篇 您的检索式:作者名="THOMAS G R"
    题名 作者 年代 出处 被引量
1高光谱遥感在农作物长势监测中的应用显示文摘该研究是加拿大Saskatchewan Scott农作物轮作系统(ACS)研究的一部分。研究始于1994年,历时18a,评价9个可耕种农作物产量系统的可靠性。由3种处理水平(organic,reduced,high)和3种作物多样性水平(low,diversified annual grains,diversified annual perennials)结合而产生的9个农作物产量系统,被用于监测和评价加拿大牧场不同处理和不同作物种植轮作下可耕种农作物的产量。在2003年生长季共收集了3次叶面积指数和光谱反射率的数据:生长季前期(6月)、生长季旺盛期(7月)、生长季后期(8月)。叶面积指数是由LAI-2000植物冠层分析仪监测的,光谱测量是由覆盖了350-2500 nm波长范围共2215个波段的ADS便携式高光谱仪完成的。结果显示,光学测量可以用于监测农作物生长状况的差异。从生长季的早期到中期,光谱和叶面积指数在不同处理下有显著差异。7月中期是用遥感资料监测农作物长势的最佳季节;红光波段与近红外波段反射率的比值和基于这两个波段构造的归一化植被指数,是检测农作物长势的最佳植被指数。郑有飞 Guo X Olfert O Brandt S Thomas G Weiss R Sproule L 2007气象与环境科学2007,30,1:22
2Non-invasive means of measuring hepatic fat content显示文摘Hepatic steatosis affects 20% to 30% of the general adult population in the western world. Currently, the technique of choice for determining hepatic fat deposition and the stage of fibrosis is liver biopsy. However, it is an invasive procedure and its use is limited, particularly in children. It may also be subject to sampling error. Non-invasive techniques such as ultrasound, computerised tomography (CT), magnetic resonance imaging (MRI) and proton magnetic resonance spectroscopy (1H MRS) can detect hepatic steatosis, but currently cannot distinguish between simple steatosis and steatohepatitis, or stage the degree of fibrosis accurately. Ultrasound is widely used to detect hepatic steatosis, but its sensitivity is reduced in the morbidly obese and also in those with small amounts of fatty infiltration. It has been used to grade hepatic fat content, but this is subjective. CT can detect hepatic steatosis, but exposes subjects to ionising radiation, thus limiting its use in longitudinal studies and in children. Recently, magnetic resonance (MR) techniques using chemical shift imaging have provided a quantitative assessment of the degree of hepatic fatty infiltration, which correlates well with liver biopsy results in the same patients. Similarly, in vivo 1H MRS is a fast, safe, non-invasive method forthe quantification of intrahepatocellular lipid (IHCL) levels. Both techniques will be useful tools in future longitudinal clinical studies, either in examining the natural history of conditions causing hepatic steatosis (e.g. non-alcoholic fatty liver disease), or in testing new treatments for these conditions.Sanjeev R Mehta E Louise Thomas Jimmy D Bell Desmond G Johnston Simon D Taylor-Robinson 2008World Journal of Gastroenterology2008,14,22:21
3伴炎性肌纤维母细胞肿瘤样特征的去分化脂肪肉瘤显示文摘Lucas D R Shukla A Thomas D G 李岩(摘译 ) 张仁亚(审校) 2010临床与实验病理学杂志2010,26,5:6
4Nat Genet:单基因突变导致过敏性皮炎的发生显示文摘最近,研究者们鉴定出了一类导致神经性皮炎发生的关键基因突变:CARDll。来自美国NIH过敏与传染病研究所的研究者们通过对四个没有血缘关系的患病家庭进行分析,发现了这一导致疾病产生的基因、Chi A Ma, Yuan Zhang, Michael A Weinreich, Jonathan J Lyons, Celeste G Nelson, Thomas DiMaggio, Kelly D Stone, Joshua D Milner Jeffrey R Stinson, Elisa Ruffo, Batsukh Dorjbal, Swadhinya Arjunaraja, Kelsey Voss, Andrew L Snow Jordan K Abbott, Pia J Hauk, Paul R Reynolds, Erwin W Gelfand Elisa Ruffo Salomé Glauzy, Natsuko Yamakawa, Eric Meffre Jennifer Stoddard, Julie Niemela, Sergio D Rosenzweig Yu Zhang, Helen F Matthews Joshua J McElwee Nina Jones Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti Brian Kim Megan A Cooper Neil Romberg 2017现代生物医学进展2017,17,27:3
5Sentinel-lymph-node resection compared with conventional axillary-lymph-node dissection in clinically node-negative patients with breast cancer: overall survival findings from the NSABP B-32 randomised phase 3 trial显示文摘David N Krag Stewart J Anderson Thomas B Julian Ann M Brown Seth P Harlow Joseph P Costantino Takamaru Ashikaga Donald L Weaver Eleftherios P Mamounas Lynne M Jalovec Thomas G Frazier R Dirk Noyes André Robidoux Hugh MC Scarth Norman Wolmark 2010Lancet Oncology2010,,10:3
622-gauge core vs 22-gauge aspiration needle for endoscopic ultrasound-guided sampling of abdominal masses显示文摘AIM To compare the aspiration needle(AN) and core biopsy needle(PC) in endoscopic ultrasound-guided fine needle aspiration(EUS-FNA) of abdominal masses.METHODS Consecutive patients referred for EUS-FNA were included in this prospective single-center trial. Each patient underwent a puncture of the lesion with both standard 22-gauge(G) AN(Echo Tip Ultra; Cook Medical, Bloomington, Indiana, United States) and the novel 22 G PC(Echo Tip Pro Core; Cook Medical, Bloomington, Indiana, United States) in a randomized fashion; histology was attempted in the PC group only. The main study endpoint was the overall diagnostic accuracy, including the contribution of histology to the final diagnosis. Secondary outcome measures included material adequacy, number of needle passes, and complications.RESULTS Fifty six consecutive patients(29 men; mean age 68 years) with pancreatic lesions(n = 38), lymphadenopathy(n = 13), submucosal tumors(n = 4), or others lesions(n = 1) underwent EUS-FNA using both of the needles in a randomized order. AN and PC reached similar overall results for diagnostic accuracy(AN: 88.9 vs PC: 96.1, P = 0.25), specimen adequacy(AN: 96.4% vs PC: 91.1%, P = 0.38), mean number of passes(AN: 1.5 vs PC: 1.7, P = 0.14), mean cellularity score(AN: 1.7 vs PC: 1.1, P = 0.058), and complications(none). A diagnosis on the basis of histology was achieved in the PC group in 36(64.3%) patients, and in 2 of those as the sole modality. In patients with available histology the mean cellularity score was higher for AN(AN: 1.7 vs PC: 1.0, P = 0.034); no other differences were of statistical significance.CONCLUSION Both needles achieved high overall diagnostic yields and similar performance characteristics for cytological diagnosis; histological analysis was only possible in 2/3 of cases with the new needle.William Sterlacci Athanasios D Sioulas Lothar Veits Pervin G?nüllü Guido Schachschal Stefan Groth Mario Anders Christos K Kontos Theodoros Topalidis Andrea Hinsch Michael Vieth Thomas R?sch Ulrike W Denzer 2016World Journal of Gastroenterology2016,22,39:2
7Athens Insomnia Scale: validation of an instrument based on ICD-10 criteria显示文摘Constantin R Soldatos Dimitris G Dikeos Thomas J Paparrigopoulos 2000Journal of Psychosomatic Research2000,,6:2
8Novel dihydropyridines with positive inotropic action through activation of Ca2+ channels显示文摘Schramm M Thomas G Towart R 1983Nature1983,303,:2
9Morbidity and mortality in compensated cirrhosis type C: A retrospective follow-up study of 384 patients显示文摘G Fattovich G Giustina F Degos F Tremolada G Diodati P Almasio F Nevens A Solinas D Mura JT Brouwer H Thomas C Njapoum C Casarin P Bonetti P Fuschi J Basho A Tocco A Bhalla R Galassini F Noventa SW Schalm G Realdi 1997Gastroenterology1997,,2:2
10Technical outcomes of sentinel-lymph-node resection and conventional axillary-lymph-node dissection in patients with clinically node-negative breast cancer: results from the NSABP B-32 randomised phase III trial显示文摘David N Krag Stewart J Anderson Thomas B Julian Ann M Brown Seth P Harlow Takamaru Ashikaga Donald L Weaver Barbara J Miller Lynne M Jalovec Thomas G Frazier R Dirk Noyes André Robidoux Hugh MC Scarth Denise M Mammolito David R McCready Eleftherios P Mamo 2007Lancet Oncology2007,,10:2
11Differential splintage for flexor tendon rehabilitation:an experimental study of its effect on strength显示文摘Savage R Pritchard M G Thomas M 2005J Hand Surg Br2005,30,2:1
12A hydrogen-bonded channel structure formed by a complex of uracil and melamine 显示文摘Thomas R Kulkarni G U 2007Beilstcin Journal of Organic Chemistry2007,3,:1
13Gold recovery from refractory carbonaceous ores by pressure oxidation, thiosulphate leaching and resin-in- pulp adsorption显示文摘THOMAS K G FLEMING C MARCHBANK A R 1998Patent1998,,57:1
14Mechanism of cellulose synthesis in Agrobacterium tumefaciens 显示文摘MATTHYSSE A G Thomas D L White A R 1995Journal of Bacteriology1995,,:1
15Pharmacological stimulation of the cholinergic antiinflammatory pathway显示文摘Bernik Thomas R Friedman Steven G Ochani Mahendar 2002J Exp Med2002,195,6:1
16Multiple processes in prospective memory retrieval: factors determining monitoring versus spontaneous retrieval 显示文摘Einstein G O McDaniel M A Thomas R 2005J Exp Psychol Gen2005,134,3:1
17Invasive Pneumococcal Disease in Children 5 Years After Conjugate Vaccine Introduction - Eight States, 1998-2005显示文摘Reingold A Hadler J Farley M M Harrison L Lynfield R Lexau C Bennett N Thomas A Craig A S Smith P J Beall B Whitney C G Moore M Pilishvili T 2008MMWR Morbidity and Mortality Weekly Report2008,,6:1
18Using a emulsion membrane system for the encapsulation of organic and inorganic substrates within inorganic microcapsule显示文摘Thomas G A Seton L Davoy R G 2002Chem Commun2002,,:1
19Sampling errors in the estimation of empirical orthogonal functions显示文摘North G B Thomas L B Cahalan R F 1982Men Wen Bey1982,110,:1
2016S rRNA based T-RFLP analysis of methane oxidizing bacteria Assessment, critical evaluation of methodology performance and application for landfill site cover soils显示文摘NANCY S LEVENTE B THOMAS G R 2006Applied Soil Ecology2006,31,:1
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