检索结果-南通市图书馆

国外科技新书评介 2015年第6期 12-12页

作者： u c agarwala 聂树真不详中国科学院光电研究院

从20世纪后半段开始，分子红外光谱学的研究得到了快速发展。本书从基本概念入手，全面总结了分子结构和频谱方面理论和实验研究的成果，还介绍了红外频谱数据的统计关系等。

关键词：红外光谱学分子结构统计关系谱数据

Effect of Pressure and Temperature on Phase Transformation and Properties of Titanium Aluminide Obtained through Reaction Synthesis

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2010年第8期26卷 693-704页

作者： R.K.Gupta Bhanu Pant Vijaya agarwala R.c.agarwala P.P.Sinha Vikram Sarabhai Space centre ISROTrivandrum-695 022India Indian Institute of Technology Roorkee

Reaction synthesis process has been used to develop γ titanium aluminide using elemental powders. Powder mixture of Ti-48 at. pct AI was prepared in ball mill and reaction synthesis was carried out in hot press with varying temperature and pressure. Titanium aluminide synthesized under high pressure and temperature resulted in better properties with respect to densification, homogenization response, mechanical properties and oxidation resistance as compared to that synthesized under low pressure and temperature. AI rich phases were observed in as-synthesized condition in all the experiments. However, some Ti rich phases were also found in high pressure-temperature synthesized samples. Density, hardness and tensile strength have been correlated with applied pressure through empirical relations. Variation in density with pressure is found to be logarithmic whereas hardness and tensile strength variation with pressure is polynomial.

关键词： Titanium aluminide Reaction synthesis Phase transformation

Performance and calibration of quark/gluon-jet taggers using 140 fb^(-1) of pp collisions at √s=13 TeV with the ATLAS detector

在线全文

学校读者我要写书评

暂无评论

chinese Physics c 2024年第2期48卷 1-25页

作者： G. Aad B. Abbott K. Abeling N.J. Abicht S.H. Abidi A. Aboulhorma H. Abramowicz H. Abreu Y. Abulaiti B.S. Acharya c. Adam Bourdarios L. Adamczyk S.V. Addepalli M.J. Addison J. Adelman A. Adiguzel T. Adye A.A. Affolder Y. Afik M.N. Agaras J. agarwala A. Aggarwal c. Agheorghiesei A. Ahmad F. Ahmadov W.S. Ahmed S. Ahuja X. Ai G. Aielli A. Aikot M. Ait Tamlihat B. Aitbenchikh I. Aizenberg M. Akbiyik T.P.A. Åkesson A.V. Akimov D. Akiyama N.N. Akolkar K. Al Khoury G.L. Alberghi J. Albert P. Albicocco G.L. Albouy S. Alderweireldt M. Aleksa I.N. Aleksandrov c. Alexa T. Alexopoulos F. Alfonsi M. Algren M. Alhroob B. Ali H.M.J. Ali S. Ali S.W. Alibocus M. Aliev G. Alimonti W. Alkakhi c. Allaire B.M.M. Allbrooke J.F. Allen c.A. Allendes Flores P.P. Allport A. Aloisio F. Alonso c. Alpigiani M. Alvarez Estevez A. Alvarez Fernandez M. Alves cardoso M.G. Alviggi M. Aly Y. Amaral coutinho A. Ambler c. Amelung M. Amerl c.G. Ames D. Amidei S.P. Amor Dos Santos K.R. Amos V. Ananiev c. Anastopoulos T. Andeen J.K. Anders S.Y. Andrean A. Andreazza S. Angelidakis A. Angerami A.V. Anisenkov A. Annovi c. Antel M.T. Anthony E. Antipov M. Antonelli F. Anulli M. Aoki T. Aoki J.A. Aparisi Pozo M.A. Aparo L. Aperio Bella c. Appelt A. Apyan N. Aranzabal S.J. Arbiol Val c. Arcangeletti A.T.H. Arce E. Arena J-F. Arguin S. Argyropoulos J.-H. Arling O. Arnaez H. Arnold G. Artoni H. Asada K. Asai S. Asai N.A. Asbah J. Assahsah K. Assamagan R. Astalos S. Atashi R.J. Atkin M. Atkinson H. Atmani P.A. Atmasiddha K. Augsten S. Auricchio A.D. Auriol V.A. Austrup G. Avolio K. Axiotis G. Azuelos D. Babal H. Bachacou K. Bachas A. Bachiu F. Backman A. Badea P. Bagnaia M. Bahmani A.J. Bailey V.R. Bailey J.T. Baines L. Baines O.K. Baker E. Bakos D. Bakshi Gupta V. Balakrishnan R. Balasubramanian E.M. Baldin P. Balek E. Ballabene F. Balli L.M. Baltes W.K. Balunas J. Balz E. Banas M. Bandieramonte A. Bandyopadhyay S. Bansal L. Barak M. Barakat E.L. Barberio D. Barberis M. Barbero M.Z. Barel K.N. Barends T. Barillari M-S. Barisits T. Barklow P. Baron D.A. Baron Mo The ATLAS collaboration

The identification of jets originating from quarks and gluons,often referred to as quark/gluon tagging,plays an important role in various analyses performed at the Large Hadron collider,as Standard Model measurements and searches for new particles decaying to quarks often rely on suppressing a large gluon-induced *** paper describes the measurement of the efficiencies of quark/gluon taggers developed within the ATLAS collaboration,using √s=13 TeV proton–proton collision data with an integrated luminosity of 140 fb^(-1) collected by the ATLAS *** taggers with high performances in rejecting jets from gluon over jets from quarks are studied:one tagger is based on requirements on the number of inner-detector tracks associated with the jet,and the other combines several jet substructure observables using a boosted decision tree.A method is established to determine the quark/gluon fraction in data,by using quark/gluon-enriched subsamples defined by the jet *** in tagging efficiency between data and simulation are provided for jets with transverse momentum between 500 GeV and 2 TeV and for multiple tagger working points.

关键词： ATLAS JET QuARK GLuON TAGGING

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

杧果缺锰、锌、硼的研究

国外农学(果树) 1988年第4期 24-27页

作者： agarwala S.c. 王仁玑

将杧果品种‘Dashehsri’植株栽植于纯砂中。分别提供完全营养藏以及缺锰(0.0055mg/l和0.055mg/l)、缺锌(0.0013mg/l和0.0065mg/l)、缺硼(0.0033mg/l和0.033mg/l)营养液。缺锌症状首先出现,缺硼和缺锰症状出现较迟。缺锌及缺锰两种症状... 详细信息

将杧果品种‘Dashehsri’植株栽植于纯砂中。分别提供完全营养藏以及缺锰(0.0055mg/l和0.055mg/l)、缺锌(0.0013mg/l和0.0065mg/l)、缺硼(0.0033mg/l和0.033mg/l)营养液。缺锌症状首先出现,缺硼和缺锰症状出现较迟。缺锌及缺锰两种症状均呈现在幼叶和中龄叶上,但两者的症状显然不同。缺硼可见症状首先在幼叶出现,然后顶端生长点枯死,继而大量副芽也枯死。缺素植株叶片的含锰、锌、硼量减少,且随着症状的如重而下降。移植124周后,严重缺素的植株,其叶片含锰量为3.8μg/g、含锌量为<7.0μg/g、含硼量为20μg/g(干重);对照(完全营养液)叶片的含锰、锌和硼量分别为22.28μg/g和100μg/g(干重)。

关键词：缺锰幼叶缺硼叶片植株杧果

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

芒果的缺锰、锌症和缺硼症

世界热带农业信息 1989年第2期 26-29页

作者： S.c.agarwala 张云贵

在营养完全和缺锰(0.0055和0.055毫克/升)、锌(0.0013和0.0065毫克/升)以及缺硼(0.0033和0.033毫克/升)的细沙中分别种植芒果栽培品种塔斯卡里(Dashehari)。试验过程中首先出现缺锌症,其次是缺硼和锰。缺锌和锰时,嫩叶和中等叶受影响但... 详细信息

在营养完全和缺锰(0.0055和0.055毫克/升)、锌(0.0013和0.0065毫克/升)以及缺硼(0.0033和0.033毫克/升)的细沙中分别种植芒果栽培品种塔斯卡里(Dashehari)。试验过程中首先出现缺锌症,其次是缺硼和锰。缺锌和锰时,嫩叶和中等叶受影响但症状大相径庭;缺硼症最先在嫩叶上出现,而后顶端生长坏死,继而大量副芽坏死。叶片缺锰、锌和硼越严重,其病症就越严重。缺养分的植株124周后,其叶每克干物质含锰3.8毫克、锌少于7.0毫克、硼20毫克,而完全养分的植株叶片每克干物质含锰22毫克、锌28毫克和硼100毫克。

关键词：芒果叶片缺锰缺硼症移植栽培品种缺素症状植株生长坏死幼叶

在线全文

学校读者我要写书评

暂无评论

芒果、番石榴和菠萝蜜的缺铜研究

世界热带农业信息 1993年第1期 28-30页

作者： S.c.agarwala 莫治雄

在最低水平铜处理中,分别从移栽后的第35周(芒果)、24周(番石榴)和48周(菠萝蜜)开始观察到缺铜对芒果、番石榴和菠萝蜜的影响。缺铜引起的干物质减少以菠萝蜜最多,番石榴最少。在严重缺铜时(0.00065mg cu/l),芒果叶片含4mg cu/g),番石... 详细信息

在最低水平铜处理中,分别从移栽后的第35周(芒果)、24周(番石榴)和48周(菠萝蜜)开始观察到缺铜对芒果、番石榴和菠萝蜜的影响。缺铜引起的干物质减少以菠萝蜜最多,番石榴最少。在严重缺铜时(0.00065mg cu/l),芒果叶片含4mg cu/g),番石榴叶片含2.1—3.0mg cu/g,菠萝蜜叶片含4.2—5.7mg cu/g(干物质),而在铜充足时(0.065mg cu/l),芒果、番石榴和菠萝蜜的叶片铜含量分别为7.4—10.2、9.6—12.4和13.5—19.1mg/g,

关键词：番石榴老叶水平处理铜浓度失绿微量营养元素亚热带果树砂培法干物质产量消煮

Isolation of Functional RNA from Heavily Infested, Wilted and Necrotic Leaf Tissues of Tea with High Polyphenol content

在线全文

学校读者我要写书评

暂无评论

Journal of Agricultural Science and Technology(B) 2012年第1期2卷 121-127页

作者： Tirthankar Bandyopadhyay Raju Bharalee Bomali Gohain Sushmita Gupta Niraj agarwala H. RanjitSingh Setu chakrabarty Priyadarshini Bhorali Mohan c. Kalita Sudripta Das Department of Biotechnology Tea Research Association Tocklai Jorhat 785008 Assam India Department of Biotechnology Gauhati University Guwahati 781014 Assam India

A procedure is described to isolate intact RNA from tissues not previously undertaken–highly infested and wilted apical buds and leaves of tea [camellia sinensis (L.) O. Ktze.]. The protocol uses a final concentration of 450 mM β mercaptoethanol (βME) and 10% Polyvinylpyrrolidone (PVP) to circumvent problems associated with large amounts of polyphenols, polysaccharides, pigments and other secondary metabolites not easily removed by conventional procedures. Furthermore, the proposed protocol is applicable to normal tissues and other plant tissues with similar stresses, containing compounds that interfere with RNA extractions. Total RNA could be used for downstream applications such as mRNA isolation, reverse transcription, quantitative Polymerase chain Reaction (PcR), cDNA library construction and Rapid amplification of cDNA ends (RAcE).

关键词： mRNA分离 RNA提取植物组织 cDNA末端快速扩增技术多酚含量茶叶枯萎聚乙烯吡咯烷酮

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

番木瓜的锰、铜和钼营养元素

福建热作科技 1992年第1期17卷 45-48页

作者： agarwala s.c. 潘一山

蜜露番木瓜(***)分别种在锰、铜和钼元素完全的砂里面和种在这三种元素缺乏的砂里,植株缺钼和缺钢症状的出现比缺锰症状早,由于缺素症所出现的生长受阻和制造的干物质减少的现象,缺锰的植株表现较不明显,而缺钼和缺铜的植株表现较明显... 详细信息

蜜露番木瓜(***)分别种在锰、铜和钼元素完全的砂里面和种在这三种元素缺乏的砂里,植株缺钼和缺钢症状的出现比缺锰症状早,由于缺素症所出现的生长受阻和制造的干物质减少的现象,缺锰的植株表现较不明显,而缺钼和缺铜的植株表现较明显.缺锰、缺铜和缺钼会减少这些元素在柏林组织中的含量和降低树体过氧化氢的活性,增强过氧化物酶和核糖核酸酶的活性.缺钼和缺铜的植株磷酸酶活性受促进,细胞色素c氧化酶的活性降低.除缺锰、缺铜和缺钼引起可溶性蛋白减少外,缺钼植株叶片硝酸还原酶的活性也下降.

关键词：番木瓜锰铜钼营养元素