维普中文期刊产品整合服务
196篇 您的检索式:作者名="Arun P"
    题名 作者 年代 出处 被引量
1Climate change adaptation, greenhouse gas mitigation and economic profitability of conservation agriculture: Some examples from cereal systems of Indo-Gangetic Plains显示文摘Achieving sustainability of the cereal system in the Indo-Gangetic Plains(IGP)of India under progressive climate change and variability necessitates adoption of practices and technologies that increase food production,adaptation and mitigation in a sustainable way.This paper examines conservation agriculture(CA)from the perspective of:(i)increased yield and farm income,(ii)adaptation to heat and water stresses,and(iii)reduction in greenhouse gas(GHGs)emissions.The analyses and conclusions are based on the literature and evidences from a large number of on-station as well as farmers’field trials on CA in the cereal systems of IGP.Our analyses show that CA-based system substantially reduces the production cost(up to 23%)but produces equal or even higher than conventional system;thereby increasing economic profitability of production system.CA-based production systems also moderated the effect of high temperature(reduced canopy temperature by 1–4°C)and increased irrigation water productivity by 66–100%compared to traditional production systems thus well adapting to water and heat stress situations of IGP.Our continuous monitoring of soil flux of CO2,N2O and CH4 revealed that CA-based rice-wheat systems emit 10–15%less GHGs than conventional systems.This is the first time that CA and its components are synthesized and analyzed from food security-climate change nexus.From this holistic analysis,we suggest that wide-scale promotion of suitable CA practices by integrating into national agriculture development strategy is a way forward to address food security,climate change adaptation and mitigation challenges faced by present agriculture.Tek B Sapkota M L Jat Jeetendra P Aryal R K Jat Arun Khatri-Chhetri 2015Journal of Integrative Agriculture2015,14,8:4
2脂氧合酶介导的杀虫剂N-位脱甲基作用的体外实验显示文摘目的 探讨细胞色素P450加单氧酶系以外的代谢途径对杀虫剂的脱烷基作用 ,检测脂氧合酶 (LOX)介导的灭害威等的N 位脱甲基作用。方法 通过Nash反应检测大豆脂氧合酶 (SLO)对灭害威作用产生甲醛的量 ,反映其介导杀虫剂的N 位脱甲基反应速率。结果 SLO对灭害威的脱甲基作用与反应时间以及SLO浓度、灭害威和过氧化氢的浓度呈依赖关系。在最佳反应条件下 ,SLO产生甲醛的最大反应速度 (Vmax)为 1 8nmol·min- 1 ·nmol- 1 。SLO对灭害威的米氏常数 (Km)值为 3 .4mmol/L ,对过氧化氢的Km值为 2 35μmol/L。去甲二氢愈创木酸 (NDGA)、棉子醇 (gossypol)和芬宁东(phenidone)对脱甲基反应的强烈抑制作用提示 ,SLO起催化作用。还原型谷胱甘肽 (GSH)或二硫苏糖醇参与反应时 ,甲醛的累积量明显降低 ,表明SLO对灭害威脱甲基作用时 ,产生自由基。丁羟基甲苯(BHT)和丁羧基苯甲醚 (BHA)对甲醛的产生的抑制作用进一步支持这一论点。除灭害威外 ,发现其他的杀虫剂也发生N 位脱甲基作用 ,只是相对反应速率较低。胡建安 Kulkarni Arun P 2002中华劳动卫生职业病杂志2002,20,6:3
3Gastric food retention at endoscopy is associated with severity of liver cirrhosis显示文摘BACKGROUND Gastrointestinal symptoms are prevalent in patients with cirrhosis.Cirrhotic patients have a known predilection to delayed gastric emptying compared to those without cirrhosis.However,the contributing factors have not been fully elucidated.Retained gastric food on esophagogastroduodenoscopy(EGD)has been used as a surrogate marker for delayed gastric emptying with reasonably high specificity.Therefore,we hypothesize that the frequency of retained gastric food contents at EGD will be higher in a cirrhotic population compared to a control population without liver disease.Additionally,we hypothesize that increased frequency of gastric food contents will be associated with increased severity of cirrhosis.AIM To determine the relative frequency of delayed gastric emptying among cirrhotics as compared to non-cirrhotics and to identify associated factors.METHODSWe performed a retrospective case-control study of cirrhotic subjects whounderwent EGD at an academic medical center between 2000 and 2015. Threehundred sixty-four patients with confirmed cirrhosis, who underwent a total of1044 EGDs for the indication of esophageal variceal screening or surveillance,were identified. During the same period, 519 control patients without liverdisease, who underwent a total of 881 EGDs for the indication of anemia, wereidentified. The presence of retained food on EGD was used as a surrogate fordelayed gastric emptying. The relative frequency of delayed gastric emptyingamong cirrhotics was compared to non-cirrhotics. Characteristics of patients withand without retained food on EGD were compared using univariable andmultivariable logistic regression analysis to identify associated factors.RESULTSOverall, 40 (4.5%) patients had evidence of retained food on EGD. Cirrhotics weremore likely to have retained food on EGD than non-cirrhotics (9.1% vs 1.4%, P <0.001). Characteristics associated with retained food on univariable analysisincluded age less than 60 years (12.6% vs 5.2%, P = 0.015), opioid use (P = 0.004),Child-Pugh class C (24.1% Child-Pugh class C vs 6.4% Child-Pugh class A, P =0.007), and lower platelet count (P = 0.027). On multivariate logistic regressionanalysis, in addition to the presence of cirrhosis (adjusted OR = 5.83;95%CI: 2.32-14.7, P < 0.001), diabetes mellitus (types 1 and 2 combined) (OR = 2.34;95%CI:1.08-5.06, P = 0.031), opioid use (OR = 3.08;95%CI: 1.29-7.34, P = 0.011), andChild-Pugh class C (OR = 4.29;95%CI: 1.43-12.9, P = 0.01) were also associatedwith a higher likelihood of food retention on EGD.CONCLUSIONCirrhotics have a higher frequency of retained food at EGD than non-cirrhotics.Decompensated cirrhosis, defined by Child-Pugh class C, is associated with ahigher likelihood of delayed gastric emptying.David B Snell Shirley Cohen-Mekelburg Russell Weg Gaurav Ghosh Adam P Buckholz Amit Mehta Xiaoyue Ma Paul J Christos Arun B Jesudian 2019World Journal of Hepatology2019,11,11:2
4Structural and luminescence enhancement properties of Eu^(3+)/Ag nanocrystallites doped SiO_2-TiO_2 matrices显示文摘We reported here the structural and optical characterisation of silver nanocrystallites/Eu3+ :SiO2-TiO2 matrices synthesised through sol-gel route. Structural characterisations were done by using energy dispersive spectroscopy (EDX), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), atomic force microscope (AFM) and transmission electron microscopy (TEM) measurements and optical characterisations were performed by absorption and emission spectroscopy. The TEM and XRD measurements confirmed the presence of nanocrystals. A broad absorption band was observed due to surface plasmon resonance of silver nanocrystals. The effect of silver nanocrystals on the emission spectrum of Eu3+ doped SiO2-TiO2 matrices was discussed. An attempt was made to explain this fluorescence enhancement by invoking phenomena such as energy transfer, asymmetry ratio, surface plasmon, surface roughness, crystallinity and grain boundary. Our analysis, based on the experimental results, suggested that all the phenomena except crystallinity and grain boundary had favourable effects on fluorescence enhancement. We also estimated the relevant parameters associated with the phenomena that affected the fluorescence emission from the Eu3+ ions in the matrix. It was seen that the theoretical estimate of fluorescence enhancement agreed well with the experimental estimate.Arun Kumar K V Revathy K P Prathibha Vasudevan Sunil Thomas Biju P R Unnikrishnan N V 2013Journal of Rare Earths2013,31,5:2
5碱炉高效运行与维护实践显示文摘随着当前能源需求量的急速增长以及对环保要求的不断增强,造纸厂已经将安全和环保问题纳入到方针和行动的各个方面,如造纸厂着力于探索一些能够增强碱炉安全、环保、高效、高开机率的全局性改善措施。探索实践的内容如:熔融物抽取系统、自动清理风口系统、利用安全检修平台进行检修、有味气体的处理和焚烧、先进的工艺控制、先进的安全联锁等都在本文中有相关介绍。于英民 Chandrasekaran R Arun A Mishra Anshul Raju R Ravishangar P S 2013中华纸业2013,34,14:2
6Antioxidant enzymes in freshwater prawn Macrobrachium malcolmsonii during embryonic and larval development 显示文摘Arun S Subramanian P 1998Comp Biochem Physiol Part B: Biochem Mol Biol1998,121,3:1
7Distinct patterns of expression of traumatic brain injury biomarkers after blast exposure: role of compromised cell membrane integrity显示文摘Arun P Abu-Taleb R Oguntayo S 2013Neurosci Lett2013,27,552:1
8Fabrication of antibacterial silver nanopartiele--sodium alginate - chitosan composite films 显示文摘Sharma S Sanpui P Arun Chattopadhyay 2012The Royal Society of Chemistry2012,2,13:1
9Phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities显示文摘CHEN Y P REKHA P D ARUN A B 2006Applied Soil Ecology2006,34,1:1
10Antioxidant formation by γ-irradiation of glucose-amino acid model systems显示文摘S P Chawla Ramesh Chander Arun Sharma 2007Food Chem2007,103,:1
11Phosphate solubilizing bacteria from subtropical soil and their tricalcium phosphate solubilizing abilities显示文摘Chen Y P Rekha P D Arun A B 2006Applied Soil Ecology2006,34,1:1
12The role of the sales employee in securing customer satisfaction显示文摘HEINER E ARUN S CATJA P 2013Journal of Marketing2013,115,3:1
13Defective N - acety- laspartate catabolism reduces brain acetate levels and myelin lipid synthesis in Canavan's disease 显示文摘Madhavarao C N Arun P Moffett J R 2005Proc Natl Acad Sci U S A2005,102,14:1
14Enhancing the functionality of food proteins by enzymatic modification显示文摘Dinakar P Arun K 0,,01:1
15Nuclear NF-κB p65 Phos-phorylationat Serine 276 by Protein KinaseA Contributes to the MalignantPhenotype of Head and Neck Cancer显示文摘ARUN P BROWN M B EHSANIAN R 2009Clin Cancer Res2009,15,:1
16Unusual presentation of warthin variant of papillary thyroid carcinoma with lymph nodal metastases in a patient of graves’ disease显示文摘Padma S Sundaram P S Arun B R 2015J Cancer Res Ther2015,11,3:1
17Polycyclic aromatic hydrocarbons (PAHs) biodegradation by basidiomycetes fungi, pseudomonas isolate, and theircocuhures: Comparative in vivo and in silico approach 显示文摘ARUN A RAJA P P ARTHI R 2008Applied Biochemistry and Biotechnology2008,151,23:1
18Regulation of N- acetylaspartate and N-acetylaspartylglutamate biosynthesis by protein kinase activators 显示文摘Arun P Madhavarao CN Moffett JR 2006J Neurochem2006,98,6:1
19Replacement of virgin rubbers by waste ground vulcanizates in blends of silicone rubber and fluororubber based on tetrafluoroethylene/propylene/vinylidene fluoride terpolymer显示文摘Arun Ghosh P Antony 2001Journal of Applied Polymer Science2001,82,:1
20Fine-grained parallel genetic algorithms in Charm++显示文摘Martin P Prasanna P Arun R 2002ACM Crossroads Magazine: Parallel Computing2002,8,3:1
返回顶部 每页显示:
共10页 首页 上一页 第1页 下一页 末页 /10 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费