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392篇 您的检索式:作者名="Shah MA"
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1Object-based classification approach for greenhouse mapping using Landsat-8 imagery显示文摘Suburban greenhouses with intensive agricultural productivity have increasingly influenced the daily diet and vegetable supply in Chinese cities.With their enormous input of fertilizers and pesticides,greenhouses have considerably changed the local soil quality and environmental risk factors.The ability to obtain timely and accurate information regarding the spatial distribution of greenhouses could make an important contribution to local agricultural management and soil protection.This paper attempts to present a practical framework for extracting suburban greenhouses,integrating remote sensing data from Landsat-8 and object-oriented classification.Inheritance classification was implemented,and various properties,including texture and neighborhood features in addition to spectral information,were investigated through the popular random forest technique for feature selection prior to SVM classification to improve the mapping accuracy.The results demonstrated that object-based classification incorporating non-spectral features yielded a significant improvement compared with the classification results obtained using only the spectral information in traditional per-pixel classification.Both the producer’s and user’s accuracy were higher than 85%for greenhouse identification.Although it remained a challenge to completely distinguish greenhouses from sparse plants,the final greenhouse map indicated that the proposed object-based classification scheme,providing multiple feature selections and multi-scale analysis,yielded worthwhile information when applied to a continuous series of the freely available Landsat-8 imagery data.Wu Chaofan Deng Jinsong Wang Ke Ma Ligang Amir Reza Shah Tahmassebi 2016International Journal of Agricultural and Biological Engineering2016,9,1:7
2Change of soil productivity in three different soils after long-term field fertilization treatments显示文摘Soil productivity(SP) without external fertilization influence is an important indicator for the capacity of a soil to support crop yield.However,there have been difficulties in estimating values of SPs for soils after various long-term field treatments because the treatment without external fertilization is used but is depleted in soil nutrients,leading to erroneous estimation.The objectives of this study were to estimate the change of SP across different cropping seasons using pot experiments,and to evaluate the steady SP value(which is defined by the basal contribution of soil itself to crop yield) after various longterm fertilization treatments in soils at different geographical locations.The pot experiments were conducted in Jinxian of Jiangxi Province with paddy soil,Zhengzhou of Henan Province with fluvo-aquic soil,and Gongzhuling of Jilin Province with black soils,China.Soils were collected after long-term field fertilization treatments of no fertilizer(control;CK-F),chemical fertilizer(NPK-F),and combined chemical fertilizer with manure(NPKM-F).The soils received either no fertilizer(F0) or chemical fertilizer(F1) for 3-6 cropping seasons in pots,which include CK-P(control;no fertilizer from long-term field experiments for pot experiments),NPK-P(chemical fertilizer from long-term field experiments for pot experiments),and NPKM-P(combined chemical and organic fertilizers from long-term field experiments for pot experiments).The yield data were used to calculate SP values.The initial SP values were high,but decreased rapidly until a relatively steady SP was achieved at or after about three cropping seasons for paddy and fluvo-aquic soils.The steady SP values in the third cropping season from CK-P,NPK-P,and NPKM-P treatments were 37.7,44.1,and 50.0% in the paddy soil,34.2,38.1,and 50.0% in the fluvo-aquic soil,with the highest value observed in the NPKM-P treatment for all soils.However,further research is required in the black soils to incorporate more than three cropping seasons.The partial least squares path mode(PLS-PM) showed that total N(nitrogen) and C/N ratio(the ratio of soil organic carbon and total N) had positive effects on the steady SP for all three soils.These findings confirm the significance of the incorporation of manure for attaining high soil productivity.Regulation of the soil C/N ratio was the other main factor for steady SP through fertilization management.LIU Kai-lou HAN Tian-fu HUANG Jing ZHANG Shui-qing GAO Hong-jun ZHANG Lu Asad Shah HUANG Shao-min ZHU Ping GAO Su-duan MA Chang-bao XUE Yan-dong ZHANG Huimin 2020Journal of Integrative Agriculture2020,19,3:5
3T Helper 17 Lineage Differentiation Is Programmed by Orphan Nuclear Receptors RORα and RORγ显示文摘Xuexian O. Yang Bhanu P. Pappu Roza Nurieva Askar Akimzhanov Hong Soon Kang Yeonseok Chung Li Ma Bhavin Shah Athanasia D. Panopoulos Kimberly S. Schluns Stephanie S. Watowich Qiang Tian Anton M. Jetten Chen Dong 2008Immunity2008,,1:3
4抑郁治疗和急性心肌梗死后1年死亡率的相关性:TRIUMPH注册研究显示文摘在急性心肌梗死(acute myocardial infarction,AMI)患者中,抑郁症是很普遍的,并且与不良的生活质量和预后相关。尽管一些国家组织提出了筛选抑郁症的建议,但尚不清楚AMI患者的抗抑郁治疗是否与更好的预后相关。该研究的目的是确定接受抗抑郁治疗是否对患者的预后有影响。方法:刘莉 叶鹏 Smolderen KG Buchanan DM Gosch K Whooley MA Chan PS Vaccarino V Parashar S Shah AJ Ho PM Spertus JA 2017中华高血压杂志2017,25,2:2
5Postoperative adjuvant chemoradiotherapy in high risk stomach carcinoma显示文摘Shah MA Kelsen DP 2002Chirurg2002,73,4:1
6Treatment of metastatic esophagus and gas- tric cancer 显示文摘Shah MA Schwartz GK 2004Semin Oncol2004,31,4:1
7Multicenter phase Ⅱ study of irinotecan,cisplatin,and bevacizumab in patients with metastatic gastric or gastroesophageal junction adenocarcinoma显示文摘Shah MA Ramanathan RK Ilson DH 2006J Clio Oncol2006,24,33:1
8Treatment of metastatic esophagus and gastric cancer显示文摘Shah MA Schwartz GK 2004Sere in Oncol2004,31,4:1
9Brg - 1 is required for maximaltranscription of the human matrix metalloproteinase - 2 gene 显示文摘Ma Z Chang MJ Shah R 2004J Biol Chem2004,279,46:1
10Bevacizumab in com- bination with chemotherapy as first-line therapy in advanced gas- tric Cancer: a randomized, double-hund, placebo-controlled phase Ⅲ study显示文摘Ohtsu A Shah MA van Cutsem E 2011J Clin Oncol2011,29,30:1
11The pregnane X receptor gene-humanized mouse:a model for investigating drug-drug interactions mediated by cytochromes P450 3A显示文摘Ma X Shah Y Cheung C 2007Drug Metab Dispos2007,35,2:1
12Glial growth factor restricts mammalian neural crest stem cells to a glial fate 显示文摘 Marchionni MA Isaacs I 1994Cell1994,77,3:1
13Transplanted human fetal neural stem cells survive,migrate,anddifferentiate in ischemic rat cerebral cortex显示文摘Kelly S Bliss TM Shah AK Sun GH Ma M Foo WC 2004Proc Natl AcadSci U S A2004,101,11:1
14Environmental regulation and geographical adaptation of diapause in Cotesia plutellae (Hymenoptera: Braconidae) , a parasitoid of the diamondback moth larvae 显示文摘Shah MA Setsuya M 1994Applied Entomology and Zoology1994,29,1:1
15Small-cell carcinoma of the gastrointestinal tract:a retrospective study of 64 cases显示文摘Brenner B Shah MA Gonen M 2004Br J Cancer2004,90,9:1
16Bevacizumab in combination with chemotherapy as first-line therapy in advanced gastric cancer: a randomized, double-blind, placebo-controlled phase HI study 显示文摘Ohtsu A Shah MA Van Cutsem E 2011J Clin Oncol2011,29,30:1
17Bevacizumab in combination with chemotherapy as first-line therapy in advanced gastric cancer:a randomized,double-blind,placebo-controlled phase III study显示文摘Ohtsu A Shah MA Van Cutsem E 2011J Clin Oncol2011,29,30:1
18A multi- centre analysis of the impact of updated risk stratification on follow-up of gastric gastro-intestinal stromal turnouts in the post-imatinib era 显示文摘Reece- Smith AM MacGoey P Shah MA 2012European Journal of Surgical Oncology the Journal of the European Society of Surgical Oncology & the British Association of Surgical Oncology2012,38,6:1
19Comparative evaluation of flow for pharmaceutical powders and granules 显示文摘Shah RB Tawakkul MA Khan MA 2008AAPS Pharm Sci Tech2008,9,1:1
20Isolation of Helicobacter pylori from dental plaque in healthy volunteers显示文摘 Shah SM Dhunjibhory KR 1990indian J Gastroentterol1990,9,4:1
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