检索结果-南通市图书馆

Rice Heat Tolerance Breeding: A Comprehensive Review and Forward Gaze

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rice science 2024年第4期31卷 375-400,I0022页

作者： ravindran Lalithambika VISAKH Sreekumar ANAND Sukumaran Nair ARYA Behera SASMITA Uday Chand JHA Rameswar Prasad SAH Radha BEENA Department of Genetics and Plant Breeding College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India Crop Improvement Division Indian Council of Agricultural Research-National Rice Research InstituteCuttackOdisha 7530006India Department of Plant Breeding and Genetics Indian Institute of Pulse ResearchKanpur 208024India Department of Plant Physiology College of AgricultureVellayaniKerala Agricultural UniversityThiruvananthapuramKerala 695522India

The yield potential of rice is seriously affected by heat stress due to climate change. Since rice is a staple food globally, it is imperative to develop heat-resistant rice varieties. Thus, a thorough understanding of the complex molecular mechanisms underlying heat tolerance and the impact of high temperatures on various critical stages of the crop is needed. Adoption of both conventional and innovative breeding strategies offers a long-term advantage over other methods, such as agronomic practices, to counter heat stress. In this review, we summarize the effects of heat stress, regulatory pathways for heat tolerance, phenotyping strategies, and various breeding methods available for developing heat-tolerant rice. We offer perspectives and knowledge to guide future research endeavors aimed at enhancing the ability of rice to withstand heat stress and ultimately benefit humanity.

关键词： genetic mechanism high-temperature stress molecular breeding genomics selection

Stroke depression:a concept with clinical applicability

在线全文

学校读者我要写书评

暂无评论

Stroke & Vascular Neurology 2024年第3期9卷 189-193页

作者： Jun Mu Arun V ravindran Pim Cuijpers Yiqing Shen Wensong Yang Qi Li Xinyu Zhou Peng Xie Department of Neurology The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina Campbell Family Mental Health Research Centre Centre for Addiction and Mental HealthDepartment of PsychiatryUniversity of TorontoTorontoOntarioCanada Department of Clinical Neuro and Developmental PsychologyAmsterdam Public Health research instituteVrije Universiteit AmsterdamAmsterdamThe Netherlands NHC Key Laboratory of Diagnosis and Treatment on Brain Functional Diseases The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina Department of Psychiatry The First Affiliated Hospital of Chongqing Medical UniversityChongqingChina

Stroke is a common neurological condition and among the leading causes of death and disability *** is both a risk factor for and complication of stroke,and the two conditions may have a complex reciprocal relationship over ***,the secondary effects of depression on stroke are often overlooked,resulting in increased morbidity and *** the previous concept of‘poststroke depression’,stroke and depression were considered as two independent *** often delays the diagnosis and treatment of *** concept‘stroke depression’proposed in this article will emphasise more the necessity of aggressive treatment of depression in the overall management of stroke,thus to reduce the incidence of stroke and in the meantime,improve the prognosis of ***,it will lead us into a new era of acute stroke intervention.

关键词： diagnosis mortality acute

Effect of age on the standardized ileal amino acid digestibility of soybean meal and canola meal in broilers

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Animal Nutrition 2024年第1期16卷 11-22页

作者： Mukti Barua M.Reza Abdollahi Faegheh Zaefarian Timothy J.Wester Channarayapatna K.Girish Peter V.Chrystal Velmurugu ravindran Monogastric Research Center School of Agriculture and EnvironmentMassey UniversityPalmerston North 4442New Zealand Department of Animal Science and Nutrition Faculty of Veterinary MedicineChattogram Veterinary and Animal Sciences UniversityKhulshiChattogram 4225Bangladesh Nutrition and Care Animal NutritionEvonik(SEA)Pte.Ltd609927 Singapore Complete Feed Solutions Howick 2145AucklandNew Zealand

Standardized ileal digestibility coefficients(SIDC)of nitrogen(N)and amino acids(AA)in two protein sources(soybean meal[SBM]and canola meal[CM])were investigated at six broiler ages(d 7,14,21,28,35,and 42).Two assay diets were formulated to contain either SBM(413 g/kg)or CM(553 g/kg)as the sole dietary AA *** dioxide(5 g/kg)was added as an indigestible marker.A total of 696 male broilers at 1 d old were allotted to 12 replicate cages per age *** assay diet was offered to birds for 4 d prior to the ileal digesta collection on d 7(14 birds/cage),14(12 birds/cage),21(10 birds/cage),28(8 birds/cage),35(8 birds/cage)and 42(6 birds/cage),*** apparent digestibility coefficients were standardized using age-specific basal endogenous AA *** the SBM group,though the SIDC of N tended to be influenced(quadratic;P=0.075)by age,no linear or quadratic response of age effect was observed on the average SIDC of indispensable(IAA)and total AA(TAA).An age effect(quadratic;P<0.05)was observed on the average SIDC of dispensable AA(DAA)in SBM with the highest value recorded at d 7,followed by a decrease from d 14 to 28,which increased beyond d *** SIDC of some individual AA(Arg,Thr,Trp,Cys,Pro)were affected(P<0.05 or P<0.001)in a quadratic manner by *** the CM,the SIDC of N,average SIDC of IAA,DAA and TAA were influenced(quadratic;P<0.05 or P<0.001)by *** SIDC of N and average SIDC of DAA and TAA were higher from d 7 to 14,declined at d 21,and then increased beyond d *** average SIDC of IAA was low between d 7 and 28 and increased *** SIDC of individual AA were affected(linear or quadratic;P<0.05 or P<0.001)by different magnitudes by *** age influence on the SIDC AA was variable,depending on the protein source and *** results demonstrate that age-specific SIDC AA data might need consideration in broiler feed formulations.

关键词： Age Amino acid Broiler Digestibility Protein source

Seismic behavior of batter pile groups embedded in liquefiable soil

在线全文

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2021年第3期20卷 583-604页

作者： J.S.rajeswari Rajib Sarkar Department of Civil Engineering Indian Institute of Technology(ISM)DhanbadDhanbad 826004India

A comparative study of the seismic performance of 2×1 pile groups considering different degrees of batter(0°for vertical,10°and 20°)embedded in single homogeneous liquefiable sand through fully coupled three-dimensional dynamic analyses is *** effects of inertial interaction are considered with structures having two different *** performance of pile groups is investigated for the fixed and pinned pile to cap connections for both floating and end bearing types of pile *** ratios of piles were also varied to enable a comprehensive *** have been carried out for three earthquake motions having varied dominant *** is observed that batter pile groups in liquefiable soils provide beneficial effects on piles and superstructure responses for both fixed and pinned head pile to cap connections for long period ***,for short period structures,a beneficial effect is most evident for fixed head connection.

关键词： batter pile liquefaction period of structure pile to cap connection slenderness ratio

Progress in ileal endogenous amino acid flow research in poultry

在线全文

学校读者我要写书评

暂无评论

Journal of Animal Science and Biotechnology 2021年第2期12卷 415-425页

作者： V.ravindran Monogastric Research Centre School of Agriculture and EnvironmentMassey UniversityPalmerston North 4442New Zealand

The progress in our understanding of the endogenous protein concept over the past century is *** proteins found in the digesta at the terminal ileum of poultry,known as endogenous protein loss,are comprised of digestive secretions,mucus and sloughed gut epithelial *** measurement of this loss is of fundamental importance because it is an indicator of gut metabolism and is essential to adjust apparent estimates of ileal amino acid *** ileal endogenous amino acid losses comprise of two components,namely basal and specific *** basal losses are fixed and associated with feed dry matter intake,whereas the specific losses are variable and induced by the presence of dietary components such as fibre and *** there is no methodology available to directly measure the specific endogenous losses and these losses are calculated by determining the basal and total(basal plus specific)losses and,then subtracting the basal losses from total *** seminal features,specific applications and shortcomings of available methodologies are briefly outlined as well as the practical challenges faced in using the published endogenous amino acid loss values for true digestibility *** relevance of taurine as a component of endogenous protein flow in poultry is identified for the first time.

关键词： Basal loss Digestible amino acids Endogenous amino acid losses Poultry Specific loss

Hybrid Metaheuristics Web Service Composition Model for QoS Aware Services

在线全文

学校读者我要写书评

暂无评论

Computer Systems Science & Engineering 2022年第5期41卷 511-524页

作者： P.rajeswari K.Jayashree Department of Computer Science and Engineering Rajalakshmi Engineering CollegeChennai602105India

Recent advancements in cloud computing(CC)technologies signified that several distinct web services are presently developed and exist at the cloud data ***,web service composition gains maximum attention among researchers due to its significance in real-time *** of Service(QoS)aware service composition concerned regarding the election of candidate services with the maximization of the whole *** these models have failed to handle the uncertainties of *** resulting QoS of composite service identified by the clients become unstable and subject to risks of failing composition by *** the other hand,trip planning is an essential technique in supporting digital map *** aims to determine a set of location based services(LBS)which cover all client intended activities quantified in the *** the available web service composition solutions do not consider the complicated spatio-temporal *** resolving this issue,this study develops a new hybridization of the firefly optimization algorithm with fuzzy logic based web service composition model(F3L-WSCM)in a cloud environment for location *** presented F3L-WSCM model involves a discovery module which enables the client to provide a query related to trip planning such as flight booking,hotels,car rentals,*** the next stage,the firefly algorithm is applied to generate composition plans to minimize the number of composition *** by,the fuzzy subtractive clustering(FSC)will select the best composition plan from the available composite ***,the presented F3L-WSCM model involves four input QoS parameters namely service cost,service availability,service response time,and user *** extensive experimental analysis takes place on CloudSim tool and exhibit the superior performance of the presented F3L-WSCM model in terms of accuracy,execution time,and efficiency.

关键词： Web service composition trip planning hybrid models firefly algorithm QoS aware services fuzzy logic

Unsteady mixed convection flow over stretching sheet in presence of chemical reaction and heat generation or absorption with non-uniform slot suction or injection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2015年第10期36卷 1253-1272页

作者： R.ravindran N.SAMYUKTHA Department of Mathematics National Institute of Technology

The article examines the unsteady mixed convection flow over a vertical stretching sheet in the presence of chemical reaction and heat generation or absorption with non-uniform mass transfer. The unsteadiness is caused by the time dependent free stream velocity varying arbitrarily with time. Non-similar solutions are obtained nu- merically by solving the coupled nonlinear partial differential equations using the quasi- linearization technique in combination with an implicit finite difference scheme. To reveal the tendency of the solutions, typical results for the local skin friction coefficient and the local Nusselt and Sherwood numbers are presented for different values of parameters. The effects of various parameters on the velocity, temperature, and concentration distributions are discussed here. The present numerical results are compared with the previously published work, and the results are found to be in excellent agreement.

关键词： unsteady mixed convection non-similar solution non-uniform slot suction,stretching sheet chemical reaction heat generation

Structure and Properties of Functionalized Polyfluorenone Containing Hetero Aromatic Side Chains

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2014年第5期32卷 667-674页

作者： R.Venkatesan N.Somanathan N.rajeswari Department of Printing Technology College of Engineering Guindy Anna University Polymer lab Central Leather Research institute

The optical properties of substituted fluorenones with diverse structures have been analyzed using molecular orbital calculations in order to understand the structure-property relations. Based on theoretical predictions, synthesis of some model compounds has been attempted. The experimentally obtained optical properties are in close agreement with the theoretically obtained results.

关键词： Conjugated polymer UV-Visible spectroscopy Band gap Structure and properties Molecular orbital calculations.

Sammon Quadratic Recurrent Multilayer Deep Classifier for Legal Document Analytics

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第8期72卷 3039-3053页

作者： Divya Mohan Latha ravindran Nair School of Engineering Cochin University of Science and TechnologyKeralaIndia

In recent years,machine learning algorithms and in particular deep learning has shown promising results when used in the field of legal *** legal field is strongly affected by the problem of information overload,due to the large amount of legal material stored in textual *** text processing is essential in the legal domain to analyze the texts of the court events to automatically predict smart *** an increasing number of digitally available documents,legal text processing is essential to analyze documents which helps to automate various legal domain *** document classification is a valuable tool in legal services for enhancing the quality and efficiency of legal document *** this paper,we propose Sammon Keyword Mapping-based Quadratic Discriminant Recurrent Multilayer Perceptive Deep Neural Classifier(SKM-QDRMPDNC),a system that applies deep neural methods to the problem of legal document *** SKM-QDRMPDNC technique consists of many layers to perform the keyword extraction and ***,the set of legal documents are collected from the *** the keyword extraction is performed using SammonMapping technique based on the distance *** the extracted features,Quadratic Discriminant analysis is applied to performthe document classification based on the likelihood ratio ***,the classified legal documents are obtained at the output *** process is repeated until minimum error is *** experimental assessment is carried out using various performance metrics such as accuracy,precision,recall,F-measure,and computational time based on several legal documents collected from the *** observed results validated that the proposed SKM-QDRMPDNC technique provides improved performance in terms of achieving higher accuracy,precision,recall,and F-measure with minimum computation time when compared to existing methods.

关键词： Legal document data analytics recurrent multilayer perceptive deep neural network sammon mapping quadratic discriminant analysis likelihood ratio test