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90篇 您的检索式:作者名="R. S. Gupta"
    题名 作者 年代 出处 被引量
1Plant decomposition and soil respiration in terrestrial ecosystems显示文摘J. S. Singh S. R. Gupta 1977The Botanical Review1977,,4:5
2Effect of Alstonia scholaris bark extract on testicular function of Wistar rats显示文摘Aim:To evaluate the antifertility effect of Alstonia scholaris bark extract in male rats.Methods:In male Wistar rats Alstonia scholaris bark extract was given by oral route at a dose of 200mg/day for60days,The fertility and testicular function were assessed by mating tests,sperm motility,sperm concentration,biochemical indices and testicular cell population dynamics.Results:Oral feeding with the extract at a dose of 200mg/day for the period of 60days did not cause body weight loss,while the weights of testes,epididymides,seminal vesicle and ventral prostate were significantly reduced.The production of step-19 spermatids was reduced by 79.6%in treated rats.The popu-lation of preleptotene and pachytene spermatocytes were decrased by61.9%and60.1%,respectively.Spematogo-nia and Sertoli cell population were also affected.The seminiferous tubule and Leydig cell nuclear area were reduced significantly(P<0.01)when compared to the controls..Reduced sperm count and motility yesulted in a total supprs-sion of fertility.A significant fall in the protein and sialic acid content of the testes,epididymides,seminal vesicle and ventral prostate as well as glycogen content of testes were also noticed.The fructose content in the seminal vesicle was lowered whereas the testicular cholesterol was elevated as compared with the controls.The following com-pounds were obtained from the extract with chromatographic separation over Si-gel column;α-amyrin,β-amyrin,lupiol acetate,venenative,rhazine and yohimbine,Conclusion:At the dose level employed,Alstonia scholaris bark extract has a significant antifertility effect in male rast;the primary site of action may be post meiotic germ cells(Step19spermatids).R. S. Gupta Rakhi Sharma Aruna Sharma A.K. Bhatnager M.P. Dobhal Y.C. Joshi M.C. Sharma 2002Asian Journal of Andrology2002,4,3:3
3Prognostic Significance of Extracellular Matrix Degrading Enzymes—Cathepsin L and Matrix Metalloproteases-2 [MMP-2] in Human Pancreatic Cancer显示文摘Nidhi Singh Prasenjit Das Siddhartha Datta Gupta Peush Sahni R. M. Pandey Surabhi Gupta Shyam S. Chauhan Anoop Saraya 2013Cancer Investigation2013,,7:2
4Radiation-induced proctosigmoiditis显示文摘R. Kochhar F. Patel S. C. Sharma S. Ayyagari R. Aggarwal M. K. Goenka B. D. Gupta S. K. Mehta 1991Digestive Diseases and Sciences1991,,:2
5Development and characterization of genic SSR markers for mungbean ( Vigna radiata (L.) Wilczek)显示文摘S. K. Gupta R. Bansal T. Gopalakrishna 2014Euphytica2014,,2:2
6T6热处理对共晶Al-Si合金力学性能、耐磨和抗蚀性能的影响(英文)显示文摘对共晶Al-Si合金的耐磨、抗蚀性能进行研究。通过控制T6热处理参数来改变共晶Al-Si合金的组织,研究组织变化对合金的硬度、强度和拉伸性能的影响,以及对抗冲蚀和腐蚀性能的影响。采用Al-Si合金制备了一典型的农机零部件。并将Al-Si合金与常用的农机用铝材的性能进行比较。结果表明,合金的化学成分、显微组织、载荷、滑动距离和试验环境对材料的耐磨、抗冲蚀和腐蚀性能有很大的影响。铸态Al-Si合金的性能要明显优于传统的铝材,而且T6热处理能够改善Al-Si合金的性能。因此,可采用Al-Si合金来替代传统的铝材制造农机。A. K. GUPTA B. K. PRASAD R. K. PAJNOO S. DAS 2012Transactions of Nonferrous Metals Society of China2012,22,5:2
7The expression of proteins involved in digestion and detoxification are regulated in Helicoverpa armigera to cope up with chlorpyrifos insecticide显示文摘Helicoverpa armigera 是在许多重要庄稼的一个关键害虫,它被化学策略主要控制。为了设法,这个害虫对杀虫药剂由于它抵抗的能力和进化正在变得挑战性。进一步,它 nonhost 植物上的随后的传播在最近的时间是显著的。因此,对 phytochemicals 和合成杀虫药剂译码抵抗机制是主要挑战。现在的工作描述消化,辩护和豁免联系了酶,这在 H 与 chlorpyrifos 抵抗被联系。armigera。H 的 Proteomic 分析。在在用 nano 液体层析团 spectrometry 包含饮食(CH ) 和人工的饮食(广告) 的 chlorpyrifos 上喂之上的 armigera 内脏织物鉴别在 CH 的 upregulated 23 蛋白质喂了幼虫。与基因本体论分析相结合的数据库搜索表明识别内脏蛋白质在消化,为免疫关键的蛋白质,强调的适应回答,和 detoxification 占去。候选人蛋白质的生物化学、量的即时聚合酶链反应分析显示昆虫正在努力在 CH 的存在得到营养素和精力,当同时努力使 chlorpyrifos 产生代射变化时。而且,我们在 H 建议了 chlorpyrifos 的一条潜在的处理小径。由用煤气的层析团 spectrometry 检验代谢物的 armigera 勇气。H。到由调整蛋白质的表示的杀虫药剂的吸引人的行为的、词法改编和电阻的一个范围在消化和 detoxification 机制包含了处理在上面的 armigera 展览与 chlorpyrifos。在这些上下文,作为内脏是生物信息的一个富有的仓库;内脏纸巾的深刻分析能在昆虫给 detoxification 和抵抗机制的线索。Vishal V. Dawkar Yojana R. Chikate Tushar H. More Vidya S. Gupta Ashok P. Giri 2016Insect Science2016,23,1:2
8Biomass and Carbon Sequestration Potential of Poplar-Wheat Inter-cropping System in Irrigated Agro-ecosystem in India显示文摘S. K. Chauhan N. Gupta R. Walia S. Yadav R. Chauhan P. S. Mangat 2011Journal of Agricultural Science and Technology(A)2011,1,4X:2
9Genetic diversity and phylogenetic relationship as revealed by inter simple sequence repeat (ISSR) polymorphism in the genus Oryza显示文摘S. P. Joshi V. S. Gupta R. K. Aggarwal P. K. Ranjekar D. S. Brar 2000TAG Theoretical and Applied Genetics2000,,8:1
10MR imaging and angiography in tuberculous meningitis显示文摘R. K. Gupta S. Gupta D. Singh B. Sharma A. Kohli R. B. Gujral 1994Neuroradiology1994,,2:1
11Enhancement of Peroxidase, Polyphenol Oxidase and Superoxide Dismutase Activities by Triadimefon in NaCl Stressed Raphanus Sativus L.显示文摘M. Muthukumarasamy S. Dutta Gupta R. Panneerselvam 2000Biologia Plantarum2000,,2:1
12Design, development and performance characteristics of a large aperture disc amplifier for high power Nd: Glass laser chain显示文摘M. P. Kamath P. K. Tripathi A. P. Kulkarni R. Chandra A. S. Joshi C. P. Navathe P. D. Gupta 2008Sadhana2008,,4:1
13Glioma grading: sensitivity, specificity, positive and negative predictive values of diffusion and perfusion imaging显示文摘H. R. Arvinda C. Kesavadas P. S. Sarma B. Thomas V. V. Radhakrishnan A. K. Gupta T. R. Kapilamoorthy S. Nair 2009Journal of Neuro - Oncology2009,,1:1
14Endoscopic ultrasound rendezvous for bile duct access using a transduodenal approach: cumulative experience at a single center. A case series显示文摘Y. Kim K. Gupta S. Mallery R. Li T. Kinney M. Freeman 2010Endoscopy2010,,:1
15Nonwetting flow of a liquid through a packed bed with gas cross-flow显示文摘G. S. Gupta J. D. Litster E. T. White V. R. Rudolph 1997Metallurgical and Materials Transactions B1997,,4:1
16Urgent endovascular revascularization for symptomatic intracranial atherosclerotic stenosis显示文摘R. Gupta H.C. Schumacher S. Mangla P.M. Meyers H. Duong A.G. Khandji R.S. Marshall J.P. Mohr J. Pile-Spellman 2003Neurology2003,,12:1
17The use of microsatellites for detecting DNA polymorphism, genotype identification and genetic diversity in wheat显示文摘M. Prasad R. K. Varshney J. K. Roy H. S. Balyan P. K. Gupta 2000TAG Theoretical and Applied Genetics (-)2000,,3:1
18Phytochemical evaluation and antispermatogenic activity of Thevetia peruviana methanol extract in male albino rats显示文摘Rajnish Gupta Jai B. S. Kachhawa R. S. Gupta Anil Kumar Sharma M. C. Sharma M. P. Dobhal 2011Human Fertility2011,,1:1
19Glioma grading: sensitivity, specificity, positive and negative predictive values of diffusion and perfusion imaging显示文摘H. R. Arvinda C. Kesavadas P. S. Sarma B. Thomas V. V. Radhakrishnan A. K. Gupta T. R. Kapilamoorthy S. Nair 2009Journal of Neuro - Oncology2009,,1:1
20Mapping QTLs for popping ability in a popcorn × flint corn cross显示文摘R. Babu S. K. Nair A. Kumar H. S. Rao P. Verma A. Gahalain I. S. Singh H. S. Gupta 2006Theoretical and Applied Genetics2006,,7:1
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