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| 1 | 中国作物低温冷害监测与模拟预报研究进展显示文摘低温冷害是影响中国粮食生产的重要灾害之一,气候变化使中国特别是东北地区的低温冷害时有发生,东北中部冷害每8年发生一次,开展作物低温冷害研究对于中国粮食安全具有重要意义。从冷害形成机理上可以分为延迟型冷害、障碍型冷害及混合型冷害3类,其冷害指标主要针对不同作物有所差别。基于站点的冷害监测小尺度,GIS等新技术提供的精确温度指标可进行区域监测。遥感技术通过监测下垫面温度(LST)和植被指数(如NDVI)可监测障碍型冷害。基于数理统计、气候模式和作物模型耦合、天气预报的发育期和产量预报的低温冷害预报方法已得到应用。作物模型可依据作物发育进程和产量损失等对冷害损失评估,同时与遥感信息等结合可进行区域灾害评估。最后讨论了中国低温冷害监测和预报新技术的发展方向。 | 檀艳静 张佳华 姚凤梅 Vijendra BOKEN | 2013 | 生态学杂志2013,32,7: | 28 |
| 2 | 基于模型模拟气候变化对农业影响评估的不确定性及处理方法显示文摘模型模拟是研究气候波动对作物影响的重要手段,也是评估未来气候变化对农业可能影响的主要途径.由于科学认识和模拟技术上的不确定性,当前的气候变化对农业潜在影响评估结果一致性很差,为农业应对气候变化的决策制定带来了极大困难.基于不同层次的影响评估中不确定性,本文从气候预估、影响评估建模过程及气候模式与作物模型的连接3个方面,系统总结了气候变化对农业影响评估中不确定性的来源及传播过程;并介绍了针对多层次、多样化的不确定性源及不确定性传播的处理技术与方法,指出了当前不确定性处理中的缺陷与不足.最后对如何准确地实施气候变化对农业影响的评估,进一步减小气候变化对农业影响评估潜在的不确定性也提出了改进的建议. | 姚凤梅 秦鹏程 张佳华 林而达 BOKEN Vijendra | 2011 | 科学通报2011,56,8: | 26 |
| 3 | Uncertainties in assessing the effect of climate change on agriculture using model simulation and uncertainty processing methods显示文摘Model simulation is an important way to study the effects of climate change on agriculture.Such assessment is subject to a range of uncertainties because of either incomplete knowledge or model technical uncertainties,impeding effective decision-making to climate change.On the basis of uncertainties in the impact assessment at different levels,this article systematically summarizes the sources and propagation of uncertainty in the assessment of the effect of climate change on agriculture in terms of the climate projection,the assessment process,and the crop models linking to climate models.Meanwhile,techniques and methods focusing on different levels and sources of uncertainty and uncertainty propagation are introduced,and shortcomings and insufficiencies in uncertainty processing are pointed out.Finally,in terms of how to accurately assess the effect of climate change on agriculture,improvements to further decrease potential uncertainty are suggested. | YAO FengMei QIN PengCheng ZHANG JiaHua LIN ErDa BOKEN Vijendra | 2011 | Chinese Science Bulletin2011,56,8: | 21 |
| 4 | 星-地光学遥感信息监测水稻高温热害研究进展显示文摘随着全球气候持续变暖,水稻高温热害的发生频率已经显著加大,这已引起科学家的广泛重视.长江中下游地区水稻生长季受到高温热害的严重影响,直接影响到该区乃至全国的粮食安全,基于卫星遥感信息开展作物高温热害监测和评估具有重要意义.本文重点论述了近年来基于光学遥感信息对水稻高温热害的监测研究进展,包括采用光学卫星遥感信息对稻作区域气温的空间分布研究、基于混合象元分解信息的水稻田混合下垫面温度提取信息、发展野外高光谱和热红外观测试验和模型,以及构建卫星-地面遥感耦合的水稻高温热害监测模型等,最后探讨了基于遥感信息开展水稻高温热害监测的前景和进一步方向. | 张佳华 姚凤梅 李秉柏 延昊 侯英雨 程高峰 Vijendra BOKEN | 2011 | 中国科学:地球科学2011,41,10: | 14 |
| 5 | Progress in monitoring high-temperature damage to rice through satellite and ground-based optical remote sensing显示文摘The occurrence of rice high-temperature damage (HTD) has increased with global warming. Cultivation of rice is seriously affected by the HTD in the middle and lower reaches of the Yangtze River, which directly affects food security in this region and in the whole of China. It is important to monitor and assess crop HTD using satellite remote sensing information. This paper reviews the recent development of monitoring rice HTD using optical remote sensing information. It includes the use of optical remote sensing information to obtain the regional spatial distribution of high temperatures, mixed-surface temperature retrieval for rice fields based on mixed decomposition information, the development of field and thermal infrared testing and modeling, and the satellite/ground-based remote sensing coupled method for monitoring rice HTD. Finally, the prospects for monitoring crop HTD based on remote sensing information are summarized. | ZHANG JiaHua YAO FengMei LI BingBai YAN Hao HOU YingYu CHENG GaoFeng Vijendra BOKEN | 2011 | Science China Earth Sciences2011,54,12: | 11 |
| 6 | 华北地区夏季旱涝的大气环流特征诊断显示文摘利用1960—2009年华北地区17个站点的月平均降水资料以及NCEP/NCAR再分析资料中的月平均位势高度场、风场等资料,研究近50 a中国华北地区夏季旱涝对应的大气环流的异常。华北地区夏季旱、涝年份对应的大气环流存在显著差异。其中,夏季华北旱年的环流特征表现为:中层乌拉尔山附近为低槽区,贝加尔湖地区则为高压脊区,朝鲜半岛附近为槽区,华北地区处于高压控制下且西太平洋副热带高压偏南;低层蒙古反气旋很强,中国东部地区出现了明显的偏北风距平,阻挡了南方暖湿水汽向华北的输送。在涝年,中层乌拉尔山附近以及朝鲜半岛附近为高压脊,贝加尔湖地区则为很深的槽区,华北地区位于贝加尔湖至蒙古的低压槽前,西太平洋副高偏北;低层蒙古附近多低压槽活动,在我国东部地区出现了南风距平,有利于南方暖湿水汽向华北输送。华北旱、涝年前期春季的大气环流形势与同期夏季很相似。 | 邵小路 姚凤梅 张佳华 李先华 陈艳 BOKEN Vijendra | 2014 | 干旱区研究2014,31,1: | 7 |
| 7 | All ileo-cecal ulcers are not Crohn's:Changing perspectives of symptomatic ileocecal ulcers显示文摘AIM To investigated clinical,endoscopic and histopathological parameters of the patients presenting with ileocecal ulcers on colonoscopy.METHODS Consecutive symptomatic patients undergoing colonoscopy,and diagnosed to have ulcerations in the ileocecal(I/C) region,were enrolled.Biopsy was obtained and theirclinical presentation and outcome were recorded.RESULTS Out of 1632 colonoscopies,104 patients had ulcerations in the I/C region and were included in the study.Their median age was 44.5 years and 59% were males.The predominant presentation was lower GI bleed(55,53%),pain abdomen ± diarrhea(36,35%),fever(32,31%),and diarrhea alone(9,9%).On colonoscopy,terminal ileum was entered in 96(92%) cases.The distribution of ulcers was as follows:Ileum alone 40%(38/96),cecum alone 33%(32/96),and both ileum plus cecum 27%(26/96).The ulcers were multiple in 98% and in 34% there were additional ulcers elsewhere in colon.Based on clinical presentation and investigations,the etiology of ulcers was classified into infective causes(43%) and noninfective causes(57%).Fourteen patients(13%) were diagnosed to have Crohn's disease(CD).CONCLUSION Non-specific ileocecal ulcers are most common ulcers seen in ileo-cecal region.And if all infections are clubbed together then infection is the most common(> 40%) cause of ulcerations of the I/C region.Cecal involvement and fever are important clues to infective cause.On the contrary CD account for only 13% cases as a cause of ileo-cecalulcers.So all symptomatic patients with I/C ulcers on colonoscopy are not Crohn's. | Jay Toshniwal Romesh Chawlani Amit Thawrani Rajesh Sharma Anil Arora Hardik L Kotecha Mohan Goyal Vijendra Kirnake Pankaj Jain Pankaj Tyagi Naresh Bansal Munish Sachdeva Piyush Ranjan Mandhir Kumar Praveen Sharma Vikas Singla Rinkesh Bansal Vineet Shah Sunita Bhalla Ashish Kumar | 2017 | World Journal of Gastrointestinal Endoscopy2017,9,7: | 5 |
| 8 | Intraventricular meningiomas: A surgical challenge显示文摘 | Bernard T. Lyngdoh Pramod J. Giri Sanjay Behari Deepu Banerji Devendra K. Chhabra Vijendra K. Jain | 2006 | Journal of Clinical Neuroscience2006,,5: | 2 |
| 9 | Mature embryo axis-based high frequency somatic embryogenesis and plant regeneration from mult-iple cultivars of barley显示文摘 | SHARMA VIJENDRA K MENDEL RALF R JUTTA SCHULZE | 2005 | Journal of Experimental Botany2005,,7: | 1 |
| 10 | High-Performance Thin-film Transistors Using Semiconductor Nanowires and Nanoribbons 显示文摘 | DUAN X F NIU Chun-ming SAHI Vijendra | 2003 | Nature2003,425,: | 1 |
| 11 | Agricultural water use estimation using geospatial modeling and a geographic information system 显示文摘 | Vijendra K B Gerrit H James E H | 2004 | Agricultural Water Management2004,67,: | 1 |
| 12 | Agrieultural water use estimation using geospatial modeling and a geographie informayion system 显示文摘 | Vijendra K B Getrit H James E H etal | 2004 | Agrieuhural Water Management2004,,67: | 1 |
| 13 | An early warning system for agricultural drought in an arid region using limited data显示文摘 | Vijendra K | 1998 | Journal of Arid Environments1998,40,2: | 1 |
| 14 | Fast density based clustering algorithm显示文摘 | P TRIKHA S VIJENDRA | | 0,,01: | 1 |
| 15 | Speaker Model Cluste-ring for Efficient Speaker Identification in Large Population Applica-tions显示文摘 | Vijendra Raj Apsingekar Phillip L De Leon | 2009 | IEEE Transactions on Audio Speech and Language pro-cessing2009,17,4: | 1 |
| 16 | Mature embryo axis- based high frequency somatic embryogenesis and plant regener- ation from multiple eultivars of barley显示文摘 | VIJENDRA K SHARMA J RALF R | 2005 | Journal of Experi- mental Botany2005,56,7: | 1 |
| 17 | An early warning system for agricultural drought in an arid region using limited data显示文摘 | Vijendra Kumar | 1998 | Journal of Arid Environments1998,40,2: | 1 |
| 18 | A highly efficient plant regeneration system through multiple shoot differentiation from commercial cultivars of barley (Hordeum vulgare L.) using meristematic shoot segments excised from germinated mature embryos显示文摘 | Vijendra K. Sharma Robert H?nsch Ralf R. Mendel Jutta Schulze | 2004 | Plant Cell Reports (-)2004,,1: | 1 |
| 19 | High-performance thin-film transistors using semiconductor nanowires and nanoribbons显示文摘 | DUAN Xiang-feng NIU Chun-ming Sahi Vijendra | 2003 | Nature2003,4225,: | 1 |
| 20 | Craniocervical Tuberculosis: Protocol of Surgical Management显示文摘 | Sanjay Behari Suresh R. Nayak Vyom Bhargava Deepu Banerji Devendra K. Chhabra Vijendra K. Jain | 2003 | Neurosurgery2003,,1: | 1 |