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1117篇 您的检索式:作者名="Subrahmanyam"
    题名 作者 年代 出处 被引量
1基于遥感图像增强的海岸线提取方法显示文摘在人类活动和自然环境的影响下,海岸带长期处于变化状态,准确提取和实时监测海岸线变化对我国海岸带的利用与开发具有重要意义。文章利用Landsat TM遥感图像和ERDAS IMAGINE遥感图像处理软件的监督分类和图像增强方法,提出两种海岸线获取方法,完成海岸线的自动提取,实现海岸带的大面积同步和动态监测。郭碧云 潘磊剑 Mantravadi.Venkata subrahmanyam 2020海洋开发与管理2020,37,7:6
2Bismuth Modified Porous Silica Preparation,Characterization and Photocatalytic Activity Evaluation for Degradation of Isoproturon显示文摘Porous silica prepared by using an acrylic emulsion has been impregnated with bismuth ion resulting in Bi_2SiO_5 species containing surface.The as-prepared materials have been characterized by X-ray diffraction spectroscopy (XRD),X-ray photoelectron spectroscopy(XPS),UV-Vis diffuse reflectance spectroscopy(UV-Vis DRS), scanning electron microscopy(SEM),energy dispersive analysis of X-ray(EDAX),transmission electron microscopy(TEM),Fourier transform infrared spectroscopy(FTIR) and N_2 adsorption/desorption techniques. EDAX analysis confirms the penetration of bismuth ions into the framework of silica to form Bi_2SiO_5,which is substantiated by XRD.The UV—Vis DRS shows that the catalysts are optically active and XPS confirms the inclusion of bismuth into the framework of silica.FTIR spectra illustrate the formation of Bi—O—Si linkages in the porous silica framework.SEM and TEM show the spherical morphology,whereas N_2 adsorption/desorption study confirms the porosity of the prepared materials.The photocatalytic activity of the material is evaluated for the degradation of isoproturon herbicide and it is found that the material is active as compared to the commercial P-25 Degussa TiO_2.Anil Kumar Reddy Police Srinivas Basavaraju Durga Kumari Valluri Subrahmanyam Machiraju 2013Journal of Materials Science & Technology2013,29,7:4
32000—2015年夏秋季孟加拉湾湾口区涡流相互作用能量学特征显示文摘文章主要使用全球简单海洋资料同化分析系统(Simple Ocean Data Assimilation,SODA)产出的海洋再分析数据产品和美国国家环境预报中心(National Centers for Environmental Prediction,NCEP)发布的风场资料,通过能量学方法分析了2000—2015年夏季至秋季(6—11月)孟加拉湾涡-流相互作用特征在不同印度洋偶极子(Indian Ocean Dipole,IOD)事件发生年的表现。结果表明,在IOD负位相年更强的西南季风背景下,涡动能和涡势能的量值均较大,海洋不稳定过程更多地将平均流场的能量输向涡旋场,IOD正位相年反之。另外,研究发现孟加拉湾湾口区的涡动能在个别年份会发展出一种与气候态存在显著异常的空间分布,即在个别年份湾口中央海域异常出现涡动能极大值。通过对出现该异常现象最显著的2010年进行个例分析,发现当年的孟加拉湾海表风场发展出一个气旋式环流异常,显著地改变了海洋上层环流形态,极大地影响了平均流场与涡旋场之间的相互作用。进一步对维持涡动能平衡的各做功项进行诊断后发现,湾口异常海域涡动能年际变化的主要影响因素为海洋内部的压强做功,其次是正压不稳定过程和平流的做功,海表风应力做功项贡献较小。乐洲 黄科 Venkata Subrahmanyam Mantravadi 2020热带海洋学报2020,39,2:2
4Market microstructure and asset pricing: On the compensation for illiquidity in stock returns显示文摘Michael J. Brennan Avanidhar Subrahmanyam 1996Journal of Financial Economics1996,,3:2
5Predictability of low frequency modes显示文摘Krishnamurti T N Subrahmanyam M Osterhof D K 1990Meteorol Atmos Phys1990,44,1:2
6A theory of overconfidence, self-attribution, and security market under- and over-reaction显示文摘Daniel K Hirshleifer D Subrahmanyam A 1998Journal of Finance1998,53,:1
7The 30--50 day mode at 850 mb during MONEX显示文摘Krishnamurti I N and Subrahmanyam D 1982J Atmos Sci1982,39,:1
8Feedback and the success of irrational investors显示文摘HIRSHLEIFER D SUBRAHMANYAM A TITMANS 2006Journal of Financial Economics2006,81,2:1
9Long-lived private information and imperfect competition显示文摘Holden C W Subrahmanyam A 1992Journal of Finance1992,47,:1
10Commonality in liquidity显示文摘Chordia T Roll R Subrahmanyam A 2000Journal of Financial Economics2000,56,:1
11, An empirical analysis of stock and bond market liquidity 显示文摘Chordia T Sarkar A Subrahmanyam A 2005Review of Financial Studies2005,18,1:1
12Trading activity and expected stock returns显示文摘CHORDIA T SUBRAHMANYAM A ANSHUMAN V R 0,,01:1
13Investor psychology and security market under-and overreactions显示文摘Daniel K Hirshleifer D Subrahmanyam A 1998Journal of Finance1998,53,6:1
14Online Communication and Adolescent Relationships 显示文摘Subrahmanyam K Patricia G 2008The Future of Children2008,18,1:1
15Market im- perfections, capital asset equilibrium and corporation fi- nanee显示文摘STAPLETON R C SUBRAHMANYAM M G 1977Journal of finance1977,32,2:1
16Investor Psychology and Security Market Under-and Over-Reactions显示文摘Daniel Kent David Hirshleifer Avanidhar Subrahmanyam 1998Journal of Finance1998,53,6:1
17Enhanced photocatalytic H2 production over Cd-ZnS supported on super basic oxides显示文摘Tambwekar SV Subrahmanyam M 1998International Journal of Hydrogen Energy1998,23,9:1
18Overconfidence,arbitrage,and equilibrium asset pricing显示文摘Daniel Kent David Hirshleifer and Avanidhar Subrahmanyam 2001Journal of Finance2001,,56:1
19Studies on the Formation of TiB2 through Carbothermal and B203 Reduction of TiO2 显示文摘Krishnarao R V Subrahmanyam J 2003Materials Science and Engineering2003,362,:1
20Market microstruc- ture and asset pricing:On the compensation for illiqui- dity in stock returns显示文摘Brennan M J Subrahmanyam A 1996Journal of Financial Eco- nomics1996,41,3:1
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