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Nano Research 2019年第4期12卷 911-917页

作者： Sohyun Park Jinju Song Seyeon Kim Balaji Sambandam vinod Mathew Sungjin Kim Jeonggeun Jo Seokhun Kim Jaekook Kim Department of Materials Science and Engineering Chonnam National University 300 Ybngbong-dong Buk-gu Gwangju 500-757 Republic of Korea Gwangju Bio/Energy R&D Center Korea Institute of Energy Research (KIER) 270-25 Samso-ro Buk-gu Gwangju 61003 Republic of Korea

In this study,a pseudo-layered Na super-ionic conductor of Na3V2(PO4)2F3 (NVPF)/C cathode for sodium-ion batteries is prepared successfully using a facile polyol refluxing process without any impurity *** X-ray diffraction and Rietveld refinement results confirm that NVPF possesses tetragonal NASICON-type lattice with a space group of P42/*** this preparative method,polyol is utilized as a solvent as well as a carbon *** presence of nanosized NVPF particles in the carbon network is confirmed by field-emission scanning electron microscopy (FE-SEM) and high-resolution transmission electron microscopy (HR-TEM).The existence of carbon is analyzed by Raman scattering and elemental *** applied as a Na-storage material in a potential window of 2.0-4.3 V,the electrode exhibits two flat voltage plateaus at 3.7 and 4.2 V with an electrochemically active V^3+/V^4+ redox *** addition,Na3V2(PO4)2F3/C composite achieved a retention capacity of ~ 88% even after 1,500 cycles at 15 ***,at high current densities of 30 and 50 C,Na3V2(PO4)2F3/C cathode retains the specific discharge capacities of 108.4 and 105.9 mAh·g-1,respectively,revealing the structural stability of the material prepared through a facile polyol refluxing method.

关键词： fluorophosphate Na3V2(PO4)2F3 polyol process sodium ion batteries long life stability

Multi-objective optimization of process parameters in Electro-Discharge Diamond Face Grinding based on ANN-NSGA-Ⅱ hybrid technique

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Frontiers of Mechanical Engineering 2013年第3期8卷 319-332页

作者： Ravindra Nath YADAV vinod YADAVA G.K.SINGH Department of Mechanical Engineering Motilal Nehru National Institute of Technology Department of Mechanical Engineering Galgotias UniversityGr.NoidaIndia

The effective study of hybrid machining processes(HMPs),in terms of modeling and optimization has always been a challenge to the *** combined approach of Artifcial Neural Network(ANN)and Non-Dominated Sorting Genetic Algorithm-II(NSGA-II)has attracted attention of researchers for modeling and optimization of the complex machining *** this paper,a hybrid machining process of Electrical Discharge Face Grinding(EDFG)and Diamond Face Grinding(DFG)named as Electrical Discharge Diamond face Grinding(EDDFG)have been studied using a hybrid methodology of *** this study,ANN has been used for modeling while NSGA-II is used to optimize the control parameters of the EDDFG *** observations of input-output relations,the experiments were conducted on a self developed face grinding setup,which is attached with the ram of EDM *** experimentation,the wheel speed,pulse current,pulse on-time and duty factor are taken as input parameters while output parameters are material removal rate(MRR)and average surface roughness(Ra).The results have shown that the developed ANN model is capable to predict the output responses within the acceptable limit for a given set of input *** has also been found that hybrid approach of ANN-NSGAII gives a set of optimal solutions for getting appropriate value of outputs with multiple objectives.

关键词： hybrid machining processes (HMPs) electrical discharge diamond grinding (EDDG) artificial neural network (ANN) genetic algorithm modeling and optimization

Detection of urinary antigens and their seroreactivity with serum of patients in Leishmania donovani infection

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Asian Pacific Journal of Tropical Medicine 2011年第5期4卷 367-370页

作者： vinod Kumar Jalaj Kumar Gour Surabhi Bajpai Manish Mishra Rakesh Kumar Singh Molecular Immunology Laboratory Department of BiochemistryFaculty of ScienceBanaras Hindu UniversityVaranasi-221005India

Objective:To detect leishmanial antigens in pre and post treated urine of visceral leishmaniasis (VL) ***:Urine and serum sample from three VL patients were collected. Ammonium sulphate precipitation and purification of urine sample was done for proteins *** PAGE of proteins was done followed by western blotting,with the patient’s pre and post treatment ***:Eight proteins of molecular weights 17 kDa,25 kDa,28 kDa,42 kDa, 47 kDa,54 kDa,60 kDa and 85 kDa were detected in the urine of VL patients before treatment. After treatment with miltefosine,none of the above proteins was detected in urine *** western blot analysis with pre treatment serum confirmed the antigenicity of four urinary proteins of molecular weights 25 kDa,28 kDa,54 kDa and 60 *** seropositivity with 25 kDa and 28 kDa antigens was negative with serum obtained after the completion of ***:In the context to unavailability of a prognostic tool,urinary leishmanial antigens may offer a better choice and may also be useful as immunoprophylactic candidates.

关键词： Visceral leishmaniasis Urinary antigens Seroreactivity

A Positive Solution of Mixed Non-Linear Fractional Delay Differential Equations with Integral Boundary Conditions

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Journal of Mathematical Research with Applications 2023年第2期43卷 213-226页

作者： Dayanand K.VYAVAHARE vinod V.KHARAT Department of Mathematics Punyashlok Ahilyadevi Holkar Solapur University Department of Mathematics N.B.Navale Sinhgad College of Engineering

In this paper, we study mixed non-linear fractional delay differential equations with integral boundary conditions. We obtain an equivalence result between the proposed problem and non-linear Fredholm integral equation of the second kind. Further, we establish existence and uniqueness of positive solutions for the problem using Guo-Krasnoseleskii’s fixed point theorem and Banach contraction principle.

关键词： Guo-Krasnoseleskii’s fixed point theorem Banach contraction principle mixed nonlinear fractional delay differential equations integral boundary conditions existence uniqueness

Scrupulous recognition of biologically important acids by fluorescent ＂turn off-on＂ mechanism of thaicalix reduced silver nanoparticles

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Chinese Chemical Letters 2017年第2期28卷 312-318页

作者： Savan M.Darjee Keyur D.Bhatt Urvi S.Panchal vinod K.Jain Department of Chemistry School of Sciences Gujarat University Ahmedabad 380009 India Department of Chemistry C.U. Shah University Wadhwan 363030 India

Water dispersible silver nanoparticles（AgNps） were prepared using thiacalix[4]arene tetrahydrazide（TCTH） as a reducing and stabilizing ***-AgNps were characterized by surface plasmon resonance（SPR）,transmission electron microscopy（TEM） and energy dispersive X-ray（EDX）.Relatively uniform 20 nm spherical particles of TCTH-AgNps were efficiently formed over a pH range of 5-9 and from 10-40 ℃.The interaction behavior of TCTH-AgNps with different amino acids was investigated using spectrophotometry and *** the amino acids tested,only tryptophan and histidine showed fluorescence quenching and fluorescence enhancement,*** linear detection range by Stern-Volmer plot was 5 nmol/L to 0.48 μmol/L for tryptophan and 4 nmol/L to 0.54 μmol/L for ***-AgNps were able to effectively reduce the levels of gram-positive bacteria,gram-negative bacteria,and *** properties argue for the potential use of TCTH-AgNps as detectors of histidine and tryptophan and as antibiotics.

关键词： Silver nanoparticles Fluorescent sensor Colorimetric sensor Thiacalixarene

Non-perturbative multiphoton excitation studies in an excitonic coupled quantum well system using high-intensity THz laser fields

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Chinese Physics B 2019年第8期28卷 355-363页

作者： Monica Gambhir vinod Prasad Department of Physics Swami Shraddhanand CollegeUniversity of DelhiDelhi 110036India Departmento de Quimica Universidad Autonoma MetropolitansSan Rafael Atlixco No186IztapalapaMexico DF 09340Mexico

Multiphoton excitations and nonlinear optical properties of exciton states in GaAs/AlxGa1-xAs coupled quantum well structure have been theoretically investigated under the influence of a time-varying high-intensity terahertz(THz)laser ***-perturbative Floquet theory is employed to solve the time-dependent equation of motion for the laser-driven excitonic quantum well *** response to the field parameters,such as intensity and frequency of the laser electric field on the state populations,can be used in various optical semiconductor device applications,such as photodetectors,sensors,all-optical switches,and terahertz emitters.

关键词： quantum well excitons terahertz non-perturbative multiphoton laser Floquet

Effect of Chlorophytum Borivilianum Santapau and Fernandes on Sexual Dysfunction in Hyperglycemic Male Rats

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Chinese Journal of Integrative Medicine 2009年第6期15卷 448-453页

作者： Mayank Thakur Shilpi Bhargava Werner Praznik Renate Loeppert vinod K Dixit Department of Pharmaceutical Sciences Dr. Hari Singh Gour University Department of Chemistry University of Natural and Applied Life Sciences Dr.Hari Singh Gour University

Objective:To investigate the effects of Chlorophytum borivilianum(CB) on sexual dysfunction, loss of body weight,and lack of libido in hyperglycemic rats induced with streptozotocin or ***: Wistar strain male albino rats were divided into five groups of six animals each:the control group(2% polyvinylpyrollidone solution),the streptozotocin control group(50 mg/kg),the alloxan control group(100 mg/kg), the streptozotocin + CB treated group(200 mg/kg),and the alloxan + CB treated group(200 mg/kg).O...

关键词： ayurvedic rasayana Chlorophytum borivilianum diabetes induced sexual dysfunction Safed Musli

Metal organic framework-combustion: A one-pot strategy to NiO nanoparticles with excellent anode properties for lithium ion batteries

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Journal of Energy Chemistry 2018年第1期27卷 300-305页

作者： Vaiyapuri Soundharrajan Balaji Sambandam Jinju Song Sungjin Kim Jeonggeun Jo Pham Tung Duong Seokhun Kim vinod Mathew Jaekook Kim Department of Materials Science and Engineering Chonnam National University

NiO nanoparticles with average particles size of 30 nm are synthesized using a one-pot metal–organic framework-combustion（MOF-C） technique, for use as an anode material in rechargeable lithium ion batteries（LIBs）. The structural and electronic properties of these nanoparticles are studied using various techniques, including powder X-ray diffraction（PXRD）, transmission electron microscopy（TEM）, scanning electron microscopy（SEM）, X-ray photoelectron spectroscopy（XPS）, and N_2 adsorption/desorption studies. The as-synthesized NiO nanoparticles sustained reversible stable capacities of 748 and 410 mAh/g at applied current densities of 500 and 1000 m A/g, respectively, after 100 cycles. Furthermore, the anode displays a notable rate capability, achieving a stable capacity of ~200 mAh/g at a high current density of10 A/g. These results indicate that the size of the NiO nanoparticles and their high surface area influence their electrochemical properties. Specifically, this combustion strategy is clearly favorable for improving the cyclability and rate capability of various metal oxides in rechargeable battery electrodes.

关键词： Metal-organic frameworks Combustion NiO nanoparticles Lithium ion batteries High rate capability

Intuitive approach towards detection of attention tunneling while using a head-up display

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Chinese Optics Letters 2015年第8期13卷 45-49页

作者： vinod Karar Divya Agrawal Smarajit Ghosh Optical Devices and Systems Central Scientific Instruments Organisation Electrical and Instrumentation Engineering Department Thapar University

Head-up display （HUD）, a primary cockpit display, helps in optimizing a pilot＇s attention towards aircraft and outside events. Slight mismatch in the balance may cause missed events; this phenomenon is called attention tunneling and affects the situational awareness of the pilot. This work reports an intuitive approach to detect attention tunneling while use of HUD in aircrafts. Texture analysis of a composite HUD camera video provided three distinguishing parameters, viz., contrast, correlation, and homogeneity. These three texture parameters are used as inputs for a fuzzy inference-based assistive detection system which could be used for distinguishing tunneled and nontunneled HUD operation.

关键词： Intuitive approach towards detection of attention tunneling while using a head-up display GLCM

Using fuzzy-AHP and parametric technique to assess soil fertility status in Northeast of Iran

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Journal of Mountain Science 2020年第4期17卷 931-948页

作者： Ali KESHAVARZI Henry Oppong TUFFOUR Ali BAGHERZADEH Leo Paapa TATTRAH vinod KUMAR Amin GHOLIZADEH Jesús RODRIGO-COMINO Laboratory of Remote Sensing and GIS Department of Soil ScienceUniversity of TehranKaraj 31587-77871Iran Department of Mining Engineering Hacettepe University06800 BeytepeAnkaraTurkey Department of Crop and Soil Sciences Kwame Nkrumah University of Science and TechnologyKumasi 00233Ghana Department of Agriculture Islamic Azad UniversityMashhad BranchP.O.Box:91735-413Mashhad 91735-413Iran Department of Computer Science Kumasi Technical UniversityKumasi 00233Ghana Government Degree College Ramban-182144 Jammu and KashmirIndia Physical Geography Trier University54286 TrierGermany Soil Erosion and Degradation Research Group.Department of Geography Valencia UniversityBlasco Ibànez2846010 ValenciaSpain

A good understanding of the levels and distribution patterns of soil properties and/or quality indicators is a prerequisite for developing sustainable agricultural land management programs. Traditional assessments of these parameters of soil fertility status are somewhat costly, in both economics and time aspects. Different modelling techniques have been proposed as a useful tool for determination of soil quality indicators and development of soil fertility maps, but to what extent these results are reliable remains under-quantified in many regions worldwide. To address this uncertainty, Fuzzy-Analytical Hierarchy Process(Fuzzy-AHP) and Parametric analyses were conducted to ascertain the soil fertility status of a semiarid region in the Northeast of Iran for some selected crops: alfalfa, corn silage, potato, sugar beet, tomato and wheat. The Fuzzy-AHP and Parametric techniques using soil suitability indices were estimated for each crop and each soil delineation was achieved by Ordinary Kriging. The Technique for Order of Preference by Similarity to Ideal Solution(TOPSIS) was used as a compensatory method to allow tradeoffs among the selected criteria. Our results demonstrated that from the Fuzzy-AHP analysis, the soil fertility indices ranged from moderate to high for production of alfalfa;from low to high for production of corn silage and sugar beet;moderate to high for production of potato and tomato;and from low to moderate for production of wheat. However, the parametric analysis showed soil fertility classes ranging from very low to high for production of all the selected crops. High correlations were also observed between soil fertility indices predicted by both models. Similarly, the capacities of both models to predict soil fertility status for production of the selected crops were also highly correlated. The preference for the cultivation of the selected crops based on the Fuzzy-AHP analysis was sugar beet > corn silage > wheat > alfalfa > tomato > potato.

关键词： Soil fertility Agricultural land management Parametric model Geographic information systems Analytic Hierarchy Process