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Journal of Bionic Engineering 2020年第5期17卷 1029-1044页

作者： Harjit Singh Chander prakash Sunpreet Singh School of Mechanical Engineering Lovely Professional UniversityPhagwaraPunjab-144411India Mechanical Engineering National University of SingaporePincode-119244Singapore

In this work,a biomimetic coating of hydroxyapatite(HA)-and titania(TiO2)was deposited on low elastic β-phase Ti-35Nb-7Ta-5Zr(β-TNTZ)alloy by plasma spray deposition technique for orthopedic *** effect of TiO2 reinforcement on microstructure,mechanical properties,and bioactivity was *** morphology,coating thickness,elemental composition,and phase composition of the developed coatings were *** biomechanical behavior of the deposited coatings was investigated in terms of surface hardness,elastic modulus,and adhesion *** was found from the morphological investigation that the TiO2 reinforcement improves the microstructure and prevents the formation of defects in the *** biomimetic HA-TiO2 coated surface possessed pores,size ranging from 200 nm-600 nm that benefits the apatite growth and *** EDS spectrum,mapping,and XRD analysis show that the deposited layerβ-TCP,CaO,TTCP,TiO2 *** HA-TiO2 coating exhibits a very dense and thick layer of 100μm-125am that exhibits excellent adhesion strength to offer mechanical interlocking to prevent *** alloying of TiO2 improves the hardness from 1.67 GPa to 2.95 GPa that enhances the wear *** was found that HA-TiO2 coating exhibits better hydrophilic and biocompatible surface as compared to HA-coating.

关键词： β-phase Ti-35Nb-7Ta-5Zr alloy plasma spray porosities bio-ceramic coating nano-indentation hardness bond strength wettability

Static/dynamic friction and wear of some selected polymeric materials for conformal tribo-pairs under boundary lubrication conditions

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Friction 2013年第3期1卷 232-241页

作者： Daniel NILSSON Braham prakash Bosch Rexroth Mellansel AB MellanselSweden Division of Machine Elements Department of Engineering Sciences and MathematicsLuleåUniversity of TechnologyLuleåSweden

This work is aimed at investigating the friction and wear performance of different polymeric materials having potential for hydraulic system components under lubricated sliding conditions against a steel counter face.A pin-on-disc test configuration was used for the experimental *** different polymeric materials selected for these studies were commercial polyimides(PI),polyether ether ketone(PEEK),and *** of these materials were bulk materials whereas others were used as coatings applied on to the cast iron *** tribological characteristics of the polymers were compared with a reference grey cast *** frictional characteristics were evaluated in both static and dynamic *** results have shown that by using polymeric materials it is possible to reduce breakaway friction by an order of magnitude compared to grey cast ***,the breakaway friction increased significantly after the wear *** polymeric materials having lowest breakaway friction have shown the highest wear with the exception of the PEEK-PTFE coating which showed low *** with graphite fillers also showed low wear but it resulted in relatively high *** carbon fibre reinforced materials resulted in unstable friction as well as higher wear compared to the PI materials with graphite fillers.

关键词： polymer tribology static friction dynamic friction and lubricated wear

Lie Triple Derivations of the Lie Algebra of Dominant Block Upper Triangular Matrices

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Algebra Colloquium 2018年第3期25卷 475-492页

作者： prakash Ghimire Huajun Huang Department of Mathematics and Physical Sciences LSU of Alexandria Alexandria LA 71302 USA Department of Mathematics and Statistics Auburn University Auburn AL 36849 USA

Let N be the Lie algebra of all n x n dominant block upper triangular matrices over a field F. In this paper, we explicitly describe all Lie triple derivations of N when char（F） ≠ 2. As an application, we character... 详细信息

关键词： Lie triple derivation block upper triangular matrix Lie algebra

A Combined Genomics and Phenomics Approach is Needed to Boost Breeding in Sugarcane

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Plant Phenomics 2023年第3期5卷 395-398页

作者： Ting Luo Xiaoyan Liu prakash Lakshmanan Key Laboratory of Sugarcane Biotechnology and Genetic Improvement(Guangxi) Ministry of Agriculture and Rural AffairsSugarcane Research InstituteGuangxi Academy of Agricultural SciencesGuangxi Key Laboratory of Sugarcane Genetic ImprovementGuangxi Academy of Agricultural SciencesNanning 530007China Interdisciplinary Research Center for Agriculture Green Development in Yangtze River Basin College of Resources and EnvironmentSouthwest UniversityChongqing 400716China Queensland Alliance for Agriculture and Food Innovation University of QueenslandSt Lucia 4067QLDAustralia

Sugarcane is a major food and bioenergy crop *** pro-duces~80%of sugar consumed worldwide,with Brazil and India together accounting for 61%of world sugarcane produc-tion in 2021[1].Globally,sugarcane is the 5th largest crop by production value and acreage,and it is also the second largest bioenergy crop[1,2].Modern sugarcane is an interspecific hybrid(Saccharum species hybrid)of wild progenitor species Saccharum officinarum(2n=80;x=10)andSaccharumspon-taneum(2n=40 to 130;x=8)[3].This genetically complex polyploid crop with varied chromosome numbers(100 to 130)has one of the largest genomes(~10 kb)among plants,making sugarcane breeding considerably slow and challenging.

关键词： breeding sugar globally

Structural, Optical, and Ferroelectric Behaviors of Cu_(1-x)Li_xO(0≤x≤0.09) Nanostructures

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Acta Metallurgica Sinica(English Letters) 2014年第2期27卷 306-312页

作者： prakash Chand Anurag Gaur Ashavani Kumar Department of Physics National Institute of Technology Kurukshetra

We report structural, optical, and ferroelectric behaviors of lithium-doped copper oxide （CU1-xLixO with x = 0.0, 0.05, 0.07, and 0.09） nanostructures synthesized by hydrothermal method. The XRD pattern indicates the pure phase formation of CuO without any impurity, and the crystallite size is found to be increases for x = 0-0.07 and decreases for x = 0.09. FESEM analysis shows that the average size of Cul xLixO nanostructures increases with the increasing the Li-doping concentrations up to 7% and then decreases for 9% Li doping concentration. Moreover, Raman and photoluminescence spectrum also confirm the phase formation of CuO. A significant reduction in optical band gap is observed up to x = 0.07, and then band gap increases for x ~ 0.09 due to segregation of the impurities on the surface or grain boundaries, which may suppress the grain growth and results the enhancement in optical band gap. Moreover, a weak ferroelectricity is observed in CuO nanostructures for pure and 9% Li doping through polarization versus electric field （P- E）.

关键词： CuO nanostructure Optical properties PL and Raman spectroscopy

Simulation and optimization approach for uncertainty-based short-term planning in open pit mines

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International Journal of Mining Science and Technology 2018年第2期28卷 153-166页

作者： Shiv prakash Upadhyay Hooman Askari-Nasab Department of Civil and Environment Engineering School of Mining and Petroleum Engineering University of Alberta

Accuracy in predictions leads to better planning with a minimum of opportunity lost. In open pit mining,the complexity of operations, coupled with a highly uncertain and dynamic production environment,limit the accuracy of predictions and force a reactive planning approach to mitigate deviations from original plans. A simulation optimization framework/tool is presented in this paper to account for uncertainties in mining operations for robust short-term production planning and proactive decision making. This framework/tool uses a discrete event simulation model of mine operations, which interacts with a goalprogramming based mine operational optimization tool to develop an uncertainty based short-term schedule. Using scenario analysis, this framework allows the planner to make proactive decisions to achieve the mine's operational and long-term objectives. This paper details the development of simulation and optimization models and presents the implementation of the framework on an iron ore mine case study for verification through scenario analysis.

关键词： Scheduling Simulation optimization Short-term planning Mine operational planning Truck-shovel allocation

ntrinsically disordered proteins and prostate ancer： pouring new wine in an old bottle

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Asian Journal of Andrology 2016年第5期18卷 659-661页

作者： prakash Kulkarni ProteinBiophysics&StructuralBiologyLaboratory InstituteforBioscienceandBiotechnologyResearchUniversityofMarylandRockvilleMD20850USA

An inconvenient truth in urology is that .despite decades of intense research,prostate cancer （PCa） has remained one of the most prevalent cancers and leading cause of cancer-related deaths in men, particularly in t... 详细信息

关键词： ACTIVE SURVEILLANCE ANDROGEN RECEPTOR PROMISCUITY NETWORKS

Fusion of Medical Images in Wavelet Domain:A Hybrid Implementation

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Computer Modeling in Engineering & Sciences 2020年第1期122卷 303-321页

作者： Satya prakash Yadav Sachin Yadav Department of Information Technology ABES Institute of Technology(ABESIT)GhaziabadIndia Department of Computer Science and Engineering G.L.Bajaj Institute of Technology and Management(GLBITM)Greater NoidaIndia

This paper presents a low intricate,profoundly energy effective MRI Images combination intended for remote visual sensor frameworks which leads to improved understanding and implementation of treatment;especially for *** is done by combining the original picture which leads to a significant reduction in the computation time and *** proposed technique conquers the calculation and energy impediment of low power tools and is examined as far as picture quality and energy is *** are performed utilizing MATLAB 2018a,to quantify the resultant vitality investment funds and the reproduction results show that the proposed calculation is very quick and devours just around 1%of vitality decomposition by the hybrid combination ***,the effortlessness of our proposed strategy makes it increasingly suitable for continuous applications.

关键词： Medical image fusion wavelet transform DWT DCT ICA fusion techniques multimodal fusion

Shielding measures of power transformer to mitigate stray loss and hot spot through coupled 3D FEA

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High Voltage 2017年第4期2卷 267-273页

作者： Sujana Dasara Vineet prakash Mishra Department of Electrical&Electronics Engineering Jawaharlal Nehru Technological UniversityKukatpallyHyderabadIndia High Voltage Engineering Department Bharat Heavy Electricals Limited(BHEL)R&DVikas NagarHyderabadIndia

Leakage flux generated in the power transformers cause stray losses in metallic parts of the *** losses largely affect the transformer hot spot which leads to thermal *** is necessary to mitigate the impact of leakage flux on metallic parts by employing magnetic shunts and eddy current *** clamping structures like flitch plate and end frames experience substantial losses,hence combinations of shielding can be used for better loss *** this study,a case study is performed on a 315 MVA,420/27 kV single-phase generator power *** work is based on coupled three-dimensional(3D)finite-element analysis(FEA)of the transformer model.A new type of magnetic shunt is explored;also different design combinations of shielding are specified in this work for efficient mitigation of hot spots as well as tank walls.

关键词： power walls hence

First time-resolved CCD photometry and time-series analysis of NSV 13601

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Research in Astronomy and Astrophysics 2020年第3期20卷 142-149页

作者： Virabhadrasinh A.Gohil Sachchidanand prakash Bhatnagar Department of Physics M.K.Bhavnagar UniversityBhavnagar-364001GujaratIndia

We present the first results of a time-resolved CCD photometric and time-series analysis of NSV 13601,a variable star in the constellation *** 14′′Schmidt-Cassegrain telescope of Maharaja Krishnakumarsinhji Bhavnagar University(MKBU)was used for *** was performed both in VStar and Period04 software,and their results were *** main results are as follows:From data analysis,its has period^77.784 d(MKBU data V)(VStar),~77.632 d(MKBU data Ic)(VStar),~77.058 d(MKBU data V)(Period04)and^49.560 d(MKBU data Ic)(Period04).Its V and I mean magnitudes for MKBU data are 12.203(V)and 11.292(I)mag *** confirm it to be a variable star.

关键词： Stars individual NSV 13601-stars oscillations-techniques photometric