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7篇 您的检索式:作者名="R.YADAV"
    题名 作者 年代 出处 被引量
1硝基咪唑杂环药物化学研究进展显示文摘硝基咪唑是一类特殊结构的杂环,五元芳香杂环咪唑与硝基的共缀使其衍生物呈现广泛的应用潜力,在药物、人工诊断剂与人工探针等相关领域研究异常活跃,尤其是在医药方面作为人工合成的化学药物已在临床中广泛用于抗癌、抗菌、抗寄生虫等,备受关注.本文结合本课题组相关研究,参考国内外近期文献,系统地综述了硝基咪唑类化合物在药物化学领域的研究与应用,包括抗肿瘤、抗细菌、抗真菌、抗寄生虫、抗结核、抗高血压以及作为人工诊断剂与病理探针、超分子基体等领域的当前现状,展望了其未来可能的发展趋势.希望该评述能为硝基咪唑类杂环化合物的多用途开发提供有益的指导.李珍珍 Maddili Swetha Kameswari TangadanchuVijai Kumar Reddy Bheemanaboina Rammohan R.Yadav 林健梅 杨仁国 蔡桂鑫 周成合 2019中国科学:化学2019,49,2:6
2Long-Term Conservation Agriculture and Intensified Cropping Systems:Effects on Growth,Yield,Water,and Energy-use Efficiency of Maize in Northwestern India显示文摘Conservation agriculture(CA)-based best-bet crop management practices may increase crop and water productivity, while conserving and sustaining natural resources. We evaluated the performance of rainy season maize during 2014 under an ongoing long-term trial(established in 2008) with three tillage practices, i.e., permanent bed(PB), zero tillage(ZT), and conventional tillage(CT) as main plots, and four intensified maize-based cropping systems, i.e., maize-wheat-mungbean, maize-chickpea-Sesbania(MCS), maizemustard-mungbean, and maize-maize-Sesbania) as subplot treatments. In the seventh rainy season of the experiment, maize growth parameters, yield attributes, yield, and water-and energy-use efficiency were highest at fixed plots under ZT. Maize growth parameters were significantly(P < 0.05) superior under ZT and PB compared with CT. Maize yield attributes, including cobs per m^2(7.8), cob length(0.183 m), grain rows per cob(13.8), and grains per row(35.6), were significantly higher under ZT than CT; however, no significant effect of cropping systems was found on maize growth and yield attributes. Zero tillage exhibited the highest maize productivity(4 589 kg ha^(-1)). However, among the cropping systems, MCS exhibited the highest maize productivity(4 582 kg ha^(-1)). In maize, water use was reduced by 80.2–120.9 mm ha-1under ZT and PB compared with CT, which ultimately enhanced the economic water-use efficiency by 42.0% and 36.6%, respectively. The ZT and PB showed a 3.5%–31.8% increase in soil organic carbon(SOC) at different soil depths(0–0.45 m), and a 32.3%–39.9% increase in energy productivity compared with CT. Overall, our results showed that CA-based ZT and PB practices coupled with diversified maize-based cropping systems effectively enhanced maize yield and SOC,as well as water-and energy-use efficiency, in northwestern India.Chiter M.PARIHAR Malu R.YADAV Shankar L.JAT Aditya K.SINGH Bhupender KUMAR Vijay POONIYA Sanatan PRADHAN Rakesh K.VERMA Mangi L.JAT Raj K.JAT Muli D.PARIHAR Hari S.NAYAK Yashpal S.SAHARAWAT 2018Pedosphere2018,28,6:3
3Insight into esterification of eugenol to eugenol benzoate using a solid super acidic modified zirconia catalyst UDCaT-5显示文摘Ganapati D.Yadav Akhilesh R.Yadav 0,,1:1
4环境催化中的陶瓷材料:应用与可能性(英文)显示文摘Environmental catalysis has been steadily growing because of the advances in its scientific and engineering aspects,as well as due to the new environmental challenges in the industrial era.The development of new catalysts and materials is essential for new technologies for various environmental applications.Ceramics play important roles in various environmental applications including the identification,monitoring,and quantification of pollutants and their control.Ceramics have important applications as sensors and photocatalysts,and they are extensively used as catalyst carriers and supports.Many ceramics are being explored as catalysts for pollution control applications.Their low cost,thermal and chemical stability,and capability of being tailored make them especially attractive for pollution control applications.Although a wide variety of materials have been developed as catalyst supports,this area is still of interest with new or modified catalyst supports being frequently reported.It is of equal importance to develop new or modified processes for the loading of catalysts on specific supports.Applications like chemical looping combustion(CLC) and other catalytic combustion processes are raising the demands to a new scale.We have been working on the development of both new and modified support materials,including mesoporous materials without structural order for possible applications in CLC and other catalytic reactions.Successful attempts have been made in the modification of conventional γ-Al2O3 and improved synthesis processes for supporting perovskite type catalysts.Our research on environmental catalysis applications of ceramic materials and processes are also briefly discussed.Nitin LABHSETWAR P.DOGGALI S.RAYALU R.YADAV T.MISTUHASHI H.HANEDA 2012催化学报2012,33,10:1
5High-Throughput Phenotyping:A Platform to Accelerate Crop Improvement显示文摘Development of high-throughput phenotyping technologies has progressed considerably in the last 10 years.These technologies provide precise measurements of desired traits among thousands of field-grown plants under diversified environments;this is a critical step towards selection of better performing lines as to yield,disease resistance,and stress tolerance to accelerate crop improvement programs.High-throughput phenotyping techniques and platforms help unrave-ling the genetic basis of complex traits associated with plant growth and development and targeted traits.This review focuses on the advancements in technologies involved in high-throughput,field-based,aerial,and unmanned platforms.Development of user-friendly data management tools and softwares to better understand phenotyping will increase the use of field-based high-throughput techniques,which have potential to revolutionize breeding strategies and meet the future needs of stakeholders.Sumit Jangra Vrantika Chaudhary Ram C.Yadav Neelam R.Yadav 2021Phenomics2021,1,2:0
6Genetic linkage mapping and QTL identification for salinity tolerance in Indian mustard(Brassica juncea L.Czern and Coss.)using SSR markers显示文摘Soil salinity is one of the major environmental constraints that limits crop yield and nearly 7%of the total area worldwide is affected by salinity.Salinity-induced oxidative stress causes membrane damage during germination and seedling growth.Indian mustard is a major oilseed crop in India and its production and productivity are severely affected by salt stress.Breeding Brassica cultivars for salinity tolerance by conventional means is very difficult and time-consuming.Therefore,understanding the molecular components associated with salt tolerance is needed to facilitate breeding for salt tolerance in Brassica.In this investigation,quantitative trait loci(QTLs)associated with salt tolerance were identified using F_(2:3)mapping population developed from a cross between CS52(salinity tolerant)and RH30(salinity sensitive).Parents and F_(2:3)were evaluated under controlled and salinity stress conditions for 14 morpho-physiological traits for two consecutive generations(F2 and F_(2:3)),explaining proportion of the phenotypic variance under control condition.Simple sequence repeat(SSR)markers were used for mapping studies.A genetic linkage map based on 42 simple sequence repeats(SSRs)markers was constructed covering 2298.5 cM(Haldane)to identify the loci associated with salt tolerance in Brassica juncea.Forty-one SSRs showing polymorphism in the parents(CS52 and RH30)were mapped on 8 linkage groups(C1–C8).One marker(nga 129)did not map to any of the linkage group and was excluded from mapping.Linkage group 5(C5;317.9 cM)was longest and linkage group 1(C1,255.0 cM)was shortest.Further,we identified 15 QTLs controlling 8 traits using F_(2:3)population.These QTLs explained 12.44–60.63%of the phenotypic variation with a LOD score range of 3.62–5.97.Out of these QTLs,QMI4.1 related to membrane injury showed 51.28%phenotypic variance with a LOD score of 3.34.QTL QBYP8.1 related to biological yield per plant showed 60.63%phenotypic variance at a LOD score of 3.62.The highest LOD score of 5.97 was recorded for QTL related to seed yield per plant(QSYP4.1).Major QTLs were QTL for biological yield per plant(QBYP8.1),QTL for siliquae per plant(QSP4.1),QTL for primary branches(QPB4.1),QTLs for seed per siliqua(QSS4.1,QSS4.2),QTL for seed yield per plant(QSYP4.1),and QTL for membrane injury(QMI8.1)which showed more than 50%phenotypic variance.These QTLs identified in our study need to be confirmed in other populations as well so that these can be used in marker-assisted selection and breeding to enhance salt tolerance in Brassica juncea.Rekha Patel Sumit Jangra Ram Avtar Neelam R.Yadav Ram C.Yadav 2023Oil Crop Science2023,8,3:0
7Origin and diversification of Indian Ceropegieae(Apocynaceae)and its possible relation to the Indian monsoon显示文摘The Indian subcontinent has experienced a major shift in climatic regime from a wet tropical regime to increased seasonal rainfall,since the late Miocene.This shift has been attributed to the intensification of monsoons,which led to opening up of dry habitats in humid forests and formation of deciduous forests.We explored the role of this climatic shift in the origin and diversification of dry-adapted plant genera Ceropegia and Brachystelma(Ceropegiae,Asclepiadoideae,Apocynaceae).We sampled Ceropegia and Brachystelma from across India and used five markers(two nuclear and three plastid regions)to reconstruct a global phylogeny of this group.Indian members of the tribe Ceropegiae were derived from Africa through at least four independent dispersal events.All dispersal events occurred in late Miocene after establishment of a monsoon climate.One of these early dispersing lineages underwent rapid radiation in peninsular India,giving rise to around 50 species.Thus,both dispersal and diversification events coincided with the intensification of monsoons and concomitant aridification.The role of environment in the evolution of floral characteristics and root type in the Indian radiation is also discussed.This is one of the first reports on a dry-adapted endemic radiati on of plants in India.Siddharthan Surveswaran Sharad S.Kambale Mansa Srivastav Sachin A.Punekar Shrirang R.Yadav K.Praveen Karanth 2021Journal of Systematics and Evolution2021,59,1:0
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