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radiation effect on temperature distribution in three-dimensional couette flow with suction or injection

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Applied Mathematics and Mechanics(English Edition) 2007年第3期28卷 309-316页

作者： Bhupendra Kumar Sharma Mamta Agarwal r.c.chaudhary Department of Mathematics University of RajasthanJaipur-302004India

A theoretical analysis of three-dimensional couette flow with radiation effect on temperature distribution has been analysed, when the injection of the fluid at the lower stationary plate is a transverse sinusoidat one and its corresponding removal by constant suction through the upper porous plate is in uniform motion. Due to this type of injection velocity, the flow becomes three-dimensional. The effect of Prandtl number, radiation parameter and injection parameter on rate of heat transfer has been examined by the help of graphs. The Prandtl number has a much greater effect on *** distribution than the injection or radiation parameter.

关键词： couette flow three-dimensional heat transfer radiation incompressible

利用加性主效应和乘积交互作用模型对国际杂交水稻圃数据的分析

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中国水稻科学 1997年第4期11卷 198-204页

作者：王磊曾列先余汉勇 c.G.McLaren r.c.chaudhary 中国水稻研究所杭州310006 广东省农业科学院植物保护研究所广州510640 国际水稻研究所

国际水稻遗传评价网（INGE）的1994年杂交水稻圃（IrHON）采用增广设计，包括了6个国家的17个地点和89个品种。为充分了解这类多点试验中关于品种和地点的交互作用，用加性主效应和乘积交互作用（AMMI）模型，以若干项乘积之和估算品种... 详细信息

国际水稻遗传评价网（INGE）的1994年杂交水稻圃（IrHON）采用增广设计，包括了6个国家的17个地点和89个品种。为充分了解这类多点试验中关于品种和地点的交互作用，用加性主效应和乘积交互作用（AMMI）模型，以若干项乘积之和估算品种和地点的交互作用。借助双标图，可鉴别对地点有特殊适应性的品种。如果有参试地点的环境l因子的数据，AMMI模型还可帮助我们用环境因子解释品种和地点的交互作用。通过本文对1994年杂交水稻圃数据的分析，我们看到AMMI模型是分析多点试验数据的非常n效的工具，能为育种项目和决策部门提供非常有价值的品种适应信息。

关键词：品种适应性加性主效应乘积交互作用水稻

Synthesis and catalytic activity of SBA-15 supported catalysts for styrene oxidation

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chinese Journal of chemical Engineering 2018年第6期26卷 1300-1306页

作者： Vasu chaudhary Sweta Department of chemical Engineering and Technology Indian Institute of Technology(BHU)

cu(II) and Mn(II) metals embedded on mesoporous SBA-15 were synthesized by co-precipitation *** support and catalysts were characterized by SEM–EDX,TEM,BET,XrD and IcP-AES *** catalytic activity of these catalysts was evaluated for styrene oxidation at various reaction conditions such as styrene to TBHP mole ratio,temperature,catalyst amount by using TBHP as an oxidizing *** reaction products were styrene oxide and benzaldehyde and highest styrene conversion(97.3%) was observed at styrene to TBHP mole ratio of 1:4,temperature at 80 °c and 20 mg of ***,the recyclability of the catalysts was observed and found that they can be recycled three times without major loss in their activity and selectivity.

关键词： SBA-15 Styrene Styrene oxide Benzaldehyde Oxidation catalytic oxidation

Influence of site conditions on seismic design parameters for foundations as determined via nonlinear site response analysis

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Frontiers of Structural and civil Engineering 2021年第1期15卷 275-303页

作者： Muhammad Tariq A.chaudhary civil Engineering Department Kuwait UniversityKhalidya 13060Kuwait

Site conditions,including geotechnical properties and the geological setting,influence the near-surface response of strata subjected to seismic *** geotechnical parameters required for the design of foundations include mass density(ρ),damping ratio(β_(s)),shear wave velocity(V_(s)),and soil shear modulus(G_(s)).The values of the last three parameters are sensitive to the level of nonlinear strain induced in the strata due to seismic ground *** this study,the effect of variations in soil properties,such as plasticity index(PI),effective stress(σ′),over consolidation ratio(Ocr),impedance contrast ratio(Icr)between the bedrock and the overlying strata,and depth of soil strata over bedrock(H),on seismic design parameters(β_(s),V_(s),and G_(s))was investigated for National Earthquake Hazards reduction Program(NEHrP)site classes c and D,through 1D nonlinear seismic site response *** Morris one-at-a-time(OAT)sensitivity analysis indicated thatβ_(s),V_(s),and G_(s)were significantly influenced by variations in PI,while Icr affectedβ_(s)more than it affected V_(s)and G_(s).However,the influence of H on these parameters was less *** was also found that variations in soil properties influenced seismic design parameters in soil type D more significantly than in soil type *** relationships forβ_(s),V_(s),and G_(s)were derived based on the 1D seismic site response analysis and sensitivity analysis ***β_(s),V_(s),and G_(s)values obtained from the analysis were compared with the corresponding values in NEHrP to determine the similarities and differences between the two sets of *** need to incorporate PI and Icr in the metrics for determiningβ_(s),V_(s),and G_(s)for the seismic design of foundations was highlighted.

关键词： site effects 1D seismic site response analysis sensitivity analysis foundations shear wave velocity soil shear modulus

Three dimensional couette flow and heat transfer through a porousmedium with variable permeability

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2003年第2期 62-66页

作者： chaudhary r.c. ,SHArMA Pawan Kumar

This paper reports research on the effects of variations in injectio n velocity and perm eability on the heat transfer and flow through a highly porous medium betwee n two horizontal parallel plates situated at constant distance with constant suc tion by the upper *** to this type of variation in injection velocity and in permeability the flow becomes three *** governing equations are sol ved by adopting complex variable notations to obtain the expressions for the ve locity and temperature field. The skin-friction along the main flow direction and rate of heat transfer are discussed with the help of graphs.

关键词： couette flow Porous medium Heat transfer Permeability injection/suction.

High-Throughput Phenotyping:A Platform to Accelerate crop Improvement

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Phenomics 2021年第2期1卷 31-53页

作者： Sumit Jangra Vrantika chaudhary ram c.Yadav Neelam r.Yadav Department of Molecular Biology Biotechnologyand BioinformaticsCCS Haryana Agricultural UniversityHisar 125004India

Development of high-throughput phenotyping technologies has progressed considerably in the last 10 *** 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 ***-throughput phenotyping techniques and platforms help unrave-ling the genetic basis of complex traits associated with plant growth and development and targeted *** review focuses on the advancements in technologies involved in high-throughput,field-based,aerial,and unmanned *** 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.

关键词： High-throughput phenotyping Imaging Technologies Platform crop improvement Biotic and abiotic stress

Influence of tool rotational speed on mechanical and corrosion behaviour of friction stir processed AZ31/Al_(2)O_(3)nanocomposite

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Journal of Magnesium and Alloys 2023年第7期11卷 2585-2599页

作者： Ashish Kumar V.P.Singh Akhileshwar Nirala r.c.Singh rajiv chaudhary Abdel-Hamid I.Mourad B.K.Sahoo Deepak Kumar Department of Mechanical Engineering Delhi Technological UniversityDelhi 110042India Department of Mechanical Engineering Galgotias college of Engineering and Technology Greater Noida 201310India Department of Mechanical Engineering National Institute of Technology MizoramAizawl 796012India Department of Mechanical Engineering IES College of Technology Bhopal462044India Mechanical and Aerospace Engineering Department College of EngineeringUnited Arab Emirates UniversityAl-Ain 15551United Arab Emirates Materials Engineering Division CSIR-National Metallurgical Laboratory(NML)Jamshedpur831007India Department of Mechanical Engineering Carnegie Mellon UniversityPittsburghPA 15213USA

Nano-sized reinforcements improved the mechanical characteristics efficiently by promoting more implicit particle hardening mechanisms compared to micron-sized ***-sized particles lessen the critical particle solidification velocity for swamp and thus offers better *** the present investigation,the friction stir processing(FSP)is utilized to produce AZ31/Al_(2)O_(3)nanocomposites at various tool rotation speeds(i.e.,900,1200,and 1500 rpm)with an optimized 1.5%volume alumina(Al_(2)O_(3))reinforcement *** mechanical and corrosion behavior of AZ31/Al_(2)O_(3)-developed nanocomposites was investigated and compared with that of the AZ31 base *** AZ31 alloy experienced a comprehensive dynamic recrystallization during FSP,causing substantial grain ***-size strengthening is the primary factor contributed to the enhancement in the strength of the fabricated *** strength and yield strength values were lower than those for the base metal matrix,although an upward trend in both values has been observed with an increase in tool rotation *** 19.72%increase in hardness along with superior corrosion resistance was achieved compared to the base alloy at a tool rotational speed of 1500 *** corrosion currents(Jcorr)of all samples dropped with increase in the rotational speed,in contrast to the corrosion potentials(Ecorr),which *** values of Jcorr of AZ31/Al_(2)O_(3)were 42.3%,56.8%,and 65.5%lower than those of AZ31 alloy at the chosen rotating speeds of 900,1200,and 1500 rpm,*** corrosion behavior of friction stir processed nanocomposites have been addressed in this manuscript which has not been given sufficient attention in the existing ***,this work offers an effective choice for the quality assurance of the FSP process of AZ31/Al_(2)O_(3)*** obtained results are relevant to the development of lightweight automobile and aerospace structures and components

关键词： Friction stir processing AZ31 alloy Al_(2)O_(3) Nanocomposite Mechanical properties corrosion resistance

Hazardous chemicals in Drinking Groundwater of District Meerut,UP,India

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地学前缘 2009年第S1期16卷 54-55页

作者： Veena chaudhary Mukesh Kumar renu chaudhary c.S.S.S.PG college S.V.B.P.U.A.& T. Modipuram c.c.S.University

Water is an essential natural resource for sustaining life and *** groundwater contributes only 0.6%of the total water resources on earth, it is the major and preferred source of drinking water in rural as well as urb... 详细信息

关键词： groundwater India Meerut pesticide toxic metal Uttar Pradesh wastage

Performance optimization of tri-gate junctionless FinFET using channel stack engineering for digital and analog/rF design

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Journal of Semiconductors 2023年第11期44卷 89-100页

作者： Devenderpal Singh Shalini chaudhary Basudha Dewan Menka Yadav Department of Electronics and communication Engineering Malaviya National Institute of TechnologyJaipurRajasthan-302017India

This manuscript explores the behavior of a junctionless tri-gate FinFET at the nano-scale region using SiGe material for the *** the analysis,three different channel structures are used:(a)tri-layer stack channel(TLSc)(Si-SiGe-Si),(b)double layer stack channel(DLSc)(SiGe-Si),(c)single layer channel(SLc)(S_(i)).The I−V characteristics,subthreshold swing(SS),drain-induced barrier lowering(DIBL),threshold voltage(V_(t)),drain current(ION),OFF current(IOFF),and ON-OFF current ratio(ION/IOFF)are observed for the structures at a 20 nm gate *** is seen that TLSc provides 21.3%and 14.3%more ON current than DLSc and SLc,*** paper also explores the analog and rF factors such as input transconductance(g_(m)),output transconductance(gds),gain(gm/gds),transconductance generation factor(TGF),cut-off frequency(f_(T)),maximum oscillation frequency(f_(max)),gain frequency product(GFP)and linearity performance parameters such as second and third-order harmonics(g_(m2),g_(m3)),voltage intercept points(VIP_(2),VIP_(3))and 1-dB compression points for the three *** results show that the TLSc has a high analog performance due to more gm and provides 16.3%,48.4%more gain than SLc and DLSc,respectively and it also provides better *** the results are obtained using the VisualTcAD tool.

关键词： short channel effects(ScEs) junctionless FinFET analog and rF parameters SiGe