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23篇 您的检索式:作者名="KUMAR Subhas"
    题名 作者 年代 出处 被引量
1Node Coverage Algorithms in Wireless Sensor Networks Using Mobile Agents显示文摘This paper proposes fault tolerant algorithms for routing mobile agents in a single channel wireless sensor network which cover every node in the network. These algorithms use local knowledge (assume no knowledge of global deployment or topology, etc). We propose the algorithms and show mathematical analysis to support our claims. The paper ends with simulation studies and discussion of results.RAINA Manik KUMAR Subhas PATRO Ranjeet 2006自动化学报2006,32,6:9
2Determination of flavonoids,polyphenols and antioxidant activity of Tephrosia purpurea:a seasonal study显示文摘OBJECTIVE:Tephrosia purpurea(Linn.) Pers.is widely used in traditional medicine to treat liver disorders,febrile attacks,enlargement and obstruction of liver,spleen,and kidney.In the present study,investigations were carried out to determine the seasonal impact on the content of flavonoid glycosides and on antioxidant activities so as to identify the optimal time of harvesting.METHODS:The plant materials were collected in different seasons during 2013-2014.Air-dried,powdered plant materials were extracted with 95%ethanol and ethanokwater(1:1) by ultrasound-assisted extraction process.Their chemical composition in terms of total polyphenol and flavonoid contents(TPCs and TFCs) was determined using modified colorimetric Folin-Ciocalteu method and aluminum chloride colorimetric assay respectively.To determine the in vitro antioxidant activity,diphenyl-picryl hydrazyl(DPPH) radical-scavenging assay and total antioxidant capacity by phosphomolybdate antioxidant assay were carried out.High-performance liquid chromatography(HPLC)/photo-diode array(PDA) analysis was used to quantify the flavonoid glycosides in the samples collected in different seasons.Correlation studies were also carried out between antioxidant activities and TPCs.RESULTS:The highest TPC and TFC were found to be in the 95%ethanolic extract of the August sample and the lowest in the 50%hydro-alcoholic extract of the plant sample collected in winter season.It was observed that in both the assays used to determine the antioxidant activity,the 95%ethanolic extracts in all the seasons showed a higher activity than their respective 50%hydroalcoholic extracts with an increase in activity as we go from cold to hot to rainy seasons.Based on correlation analysis,DPPH radical-scavenging activities as well as the spectrophotometrically measured phosphomolybdenum complex were also strongly correlated with TPC of the extracts.The most abundant flavonoid glycoside was quercetin-3-O-rhamnoglucoside in all the seasons.The content of all flavonoids was observed highest in the 95%ethanolic extract of the plant collected in August(TP-3).The 50%hydro-alcoholic extract of the plant collected in December(TP-6) showed the lowest amount of flavonoids and antioxidant activity.CONCLUSION:The findings of this study confirmed that the metabolism and production of flavonoids in T.purpurea are vigorously affected by seasonal factors.Significant differences were observed in the TPC,TFC and flavonoid glycoside composition in the 95%ethanolic as well as 50%hydro-alcoholic extracts of T.purpurea collected in different seasons.Since the 95%ethanolic extract of the August sample(TP-3),which also happens to be its flowering season,exhibited the highest TPC.TFC and antioxidant activities in both DPPH and phosphomolybdate assays as well as contained the highest content of all flavonoids,it could be recommended as the optimal season of harvesting T.purpurea with respect to its pharmaceutically important constituents,i.e.,flavonoids.Madan Mohan Pandey Sayyada Khatoon Subha Rastogi Ajay Kumar Singh Rawat 2016Journal of Integrative Medicine2016,14,6:3
3ASGE Bariatric Endoscopy Task Force systematic review and meta-analysis assessing the ASGE PIVI thresholds for adopting endoscopic bariatric therapies显示文摘Barham K. Abu Dayyeh Nitin Kumar Steven A. Edmundowicz Sreenivasa Jonnalagadda Michael Larsen Shelby Sullivan Christopher C. Thompson Subhas Banerjee 2015Gastrointestinal Endoscopy2015,,3:2
4Endoscopic bariatric therapies显示文摘Barham K. Abu Dayyeh Steven A. Edmundowicz Sreenivasa Jonnalagadda Nitin Kumar Michael Larsen Shelby Sullivan Christopher C. Thompson Subhas Banerjee 2015Gastrointestinal Endoscopy2015,,5:2
5Agile soft- ware development practices: Evolution, principles and criticisms 显示文摘Subhas misra Vinod Kumar Urea Kumar 2012International Journal of Quality & Reliability Management2012,29,9:1
6NR-EPDM covulcanization:A novel approach显示文摘Ghosh Arup Kumar Debnath Subhas Chandra Naskar Nityananda Basu Dipak Kumar 2001Journal of Applied Polymer Science2001,81,4:1
7NR-EPDM Covulcanization: A Novel Approach 显示文摘Arup Kumar Ghosh Subhas Chandra Debnath Journal of Applied Polymer Science0,81,:1
8Effect of long term administration of dietaryβ-glucan on immunity,growth and survival of Labeo rohita fingerlings显示文摘Chandra Kanta Misra Basanta Kumar Das Subhas Chandra Mukherjee 2006Aquaculture2006,255,14:1
9Status of groundwater arsenic contamination in Bangladesh: A 14-year study report显示文摘Dipankar Chakraborti Mohammad Mahmudur Rahman Bhaskar Das Matthew Murrill Sankar Dey Subhas Chandra Mukherjee Ratan Kumar Dhar Bhajan Kumar Biswas Uttam Kumar Chowdhury Shibtosh Roy Shahariar Sorif Mohammad Selim Mahmuder Rahman Quazi Quamruzzaman 2010Water Research2010,,19:1
10Saussurea costus : botanical, chemical and pharmacological review of an ayurvedic medicinal plant 显示文摘Pandey Madan Mohan Rastogi Subha Rawat Ajay Kumar Singh 2007J Ethnopharmacol2007,110,3:1
11Sol–gel derived nano zinc oxide for the reduction of zinc oxide level in natural rubber compounds显示文摘Kumarjyoti Roy Md. Najib Alam Swapan Kumar Mandal Subhas Chandra Debnath 2014Journal of Sol-Gel Science and Technology2014,,3:1
12An efficient chemo and regioselective oxidative nuclear bromination of activated aromatic compounds using lithium bromide and ceric ammonium nitrate显示文摘Subhas Chandra Roy Chandrani Guin Kalyan Kumar Rana 2001Tetrahedron Letters2001,42,:1
13Identifying some important success factors in adopting agile software development practices 显示文摘Subhas Chandra Misra Vinod Kumar Uma Kumar 2009Journal of Systems and Software2009,82,11:1
14Novel carbohydrate polymeric blend membranes in pervaporation dehydration of acetic acid显示文摘Krishna Rao K S V Vijaya Kumar Naidu B Subha M C S 2006Carbohydr Polym2006,66,:1
15NR-EPDM covulcanization:A novel approach显示文摘Arup Kumar Ghosh Subhas Chandra Debnath Nityananda Naskar 2001J appl Polym Sci2001,81,4:1
16Monitored natural attenuation of a long-term petroleum hydrocarbon contaminated sites: a case study显示文摘Ravi Naidu Subhas Nandy Mallavarapu Megharaj R. P. Kumar Sreenivasulu Chadalavada Zuliang Chen Mark Bowman 2012Biodegradation2012,,6:1
17Toxicity of cypermethrin in Labeo rohita fingerlings: biochemical, enzymatic and haematological consequences显示文摘Basanta Kumar Das Subhas Chandra Mukherjee 2002Comparative Biochemistry and Physiology Part C2002,,1:1
18Novel chitosan-based pH-sensifive interpenetrating network mierogels for the controlled release of cefadroxil 显示文摘Krishna Rao KSV Vijaya Kumar Naidu B Subha MCS 2006Carbohyd Polym2006,66,3:1
19Short and stereoselective total synthesis of furano lignans ( ± )-dihydrosesamin, ( ± )-lariciresinol dimethyl ether, (± )-aeuminatin methyl ether, (± )- sanshodiol methyl ether, ( ± )-lariciresinol, ( ± )- acuminatin, and ( ± )-lariciresinol monomethyl ether and furofuran lignans ( ±)-sesamin, ( ± )-eudesmin, (± )-piperitol methyl ether, ( ±)-pinoresinol, ( ± )- piperitol, and ( ± )-pinoresinol monomethyl ether by radical cyelization of epoxides using a transition-metal radical source 显示文摘Subhas Chandra Roy Kalian Kumar Rana Chandrani Guin 2002J Org Chem2002,67,10:1
20Toxicity of cy Perme thrinin Labeorohl tafinger lings: biochemical, enzymatic and haematol ogieal consequences 显示文摘Basanta Kumar Das Subhas Chandra Mukherjee 2003ComParative Biochemistry and Physiology Part C2003,2,:1
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