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Asian Journal of Traditional Medicines 2021年第6期16卷 351-366页

作者： ajay kumar meena R.Ilavarasan Arjun Singh Lavkush Sharma Amit Dixit N.Srikanth Regional Ayurveda Research Institute AamkhoGwalior 474009India Captain Srinivasa Murthy Central Ayurveda Research Institute Chennai 600106India Central Ayurveda Research Institute Kolkata 700091India Central Council for Research in Ayurvedic Sciences Ministry of AYUSHGovernment of IndiaNew Delhi 110058India

The present study explored quality control of plant drug and polyherbal formulation using HPTLC and HPLC *** study combined qualitative analysis of Emodin and Rhein biomarker compound in Rhei Emodi *** extract and polyherbal formulation extract by HPTLC method with quantitative estimation of Emodin by HPLC method,aiming to help in accurate identification of Emodin and Rhein in plant materials,polyherbal *** study also checked adulteration,with the purpose of improving bio-efficacy of ayurvedic *** the samples showed characteristic peaks of Emodin at same retention time as that of standard *** to the HPTLC fingerprinting results,the Rf values of Rhein reference standard at 0.42 and Emodin at 0.62 were observed in test solution of Rhei emodi *** extract and polyherbal formulation extract and both were found *** quantitative evaluation of Emodin present in the polyherbal formulation and Rhei emodi *** extracts were 0.0177% and 0.3106% respectively.

关键词： Rhei emodi Emodin Rhein Standardization HPTLC HPLC and quantification

Evaluation of the effect of shodhana(detoxification)process using chromatographic profiling(HPTLC,HPLC,LC-MS,and GC-MS)and estimation of the content of toxic colchicine in Gloriosa superba ***

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Asian Journal of Traditional Medicines 2023年第4期18卷 143-162页

作者： ajay kumar meena Poorna Venktaraman Mohit Motiwale Ravindra Singh Kusuma Ganji N.Srikanth K.S.Dhiman Regional Ayurveda Research Institute AamkhoGwalior 474009India Captain Srinivasa Murthy Central Ayurveda Research Institute Chennai 600106India Central Council for Research in Ayurvedic Sciences Ministry of AYUSHGovt.of IndiaNew Delhi 110058India

Shodhana(purification/detoxification)is an important aspect of *** has been described in several important pieces of *** this study,we performed shodhana process on Langali(Gloriosa superba Linn.)tubers of family Liliaceae,a semi-woody herbaceous climber with significant therapeutic *** compared the unprocessed(before purification)and processed(after purification)samples based on the phytochemical,physicochemical,and chromatographic study,including HPTLC,HPLC,GC-MS and *** changes were observed in profiling after the shodhana *** plant contains colchicine,known for its toxic effects,particularly ***,we quantified colchicine in the unprocessed and processed samples of Gloriosa superba *** using HPLC *** showed that the percentage of colchicine was reduced by 13.67%in chloroform extract and 20.97%in ethanol extracts after the shodhana process.

关键词： Shodhana HPLC LC-MS GC-MS colchicine Gloriosa superba toxicity Ayurveda

Spectroscopic study of strangeness=-3Ω^(-)baryon

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Chinese Physics C 2022年第10期46卷 43-51页

作者： Chandni Menapara ajay kumar Rai Department of Physics Sardar Vallabhbhai National Institute of TechnologySurat-395007GujaratIndia

Ω^(-)baryon with sss quarks has been investigated through many theoretical studies so far but scarcely observed in ***,an attempt has been made to explore properties of Ω with hypercentral Constituent Quark Model(hCQM)with a linear confining *** resonance mass spectra have been obtained for 1S-4S,1P-4P,1D-3D,and *** Regge trajectory has been investigated for the linear nature based on calculated data along with the magnetic *** present work has been compared with various approaches and known experimental findings.

关键词： mass spectra strange baryon Regge trajectory magnetic moment

Spectroscopic investigation of light strange S=−1Λ and Σ and S=−2Ξbaryons

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Chinese Physics C 2021年第6期45卷 91-108页

作者： Chandni Menapara ajay kumar Rai Department of Physics Sardar Vallabhbhai National Institute of TechnologySurat-395007GujaratIndia

The present study is dedicated to light-strange∧with strangeness S=−1 and isospin I=0,with S=−1 and I=1,andΞbaryon with S=−2 andI=1/*** this study,the hypercentral constituent quark model with linear confining potential has been employed along with a first order correction term to obtain the resonance masses up to approximately 4 *** calculated states include 1S-5S,1P-4P,1D-3D,1F-2F,and 1G(in a few cases)along with all possible spin-parity *** trajectories have been explored for the linearity of the calculated masses for(n,M^(2))and(J,M^(2)).Magnetic moments have been intensively studied for ground state spin 1/2 and,3/2 in addition to the configuration mixing of the first negative parity state ***,the transition magnetic moments and radiative decay widths have been presented.

关键词： mass spectra strange baryon Regge trajectory magnetic moment

Dual-Core Photonic Crystal Fiber Plasmonic Refractive Index Sensor: A Numerical Analysis

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Photonic Sensors 2019年第2期9卷 151-161页

作者： Alok kumar PAUL ajay Krishno SARKAR Department of Electrical & Electronic Engineering Rajshahi University of Engineering & Technology Rajshahi-6204 Bangladesh

A numerical analysis on dual core photonic crystal fiber (DC-PCF) based surface plasmon resonance (SPR) refractive index sensor is presented. The guiding parameters and required sensing performances are examined with finite element method (FEM) based software under MATLAB environment. According to simulation, it is warranted that the proposed refractive index sensor offers the maximum amplitude sensitivity of 554.9 refractive index unit (RIU-1) and 636.5 RIU 1 with the maximum wavelength sensitivity of 5800nm/RIU and 11 500nm/RIU, and the sensor resolutions of 1.72 ×10^-5RIU and 8.7× 10^-6 RIU, at analyte refractive index (RI) of 1.40 for x- and y-polarized modes, respectively. As the sensing performance in different wavelength ranges is quite high, the proposed sensor can be used in simultaneous detection for different wavelength ranges. Therefore, the proposed device is of a suitable platform for detecting biological, chemical, biochemical, and organic chemical analytes.

关键词： Photonic crystal fiber biosensor refractive index sensor finite element method plasmonic material

Spectroscopy and decay properties of charmonium

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Chinese Physics C 2018年第8期42卷 19-33页

作者： Virendrasinh Kher ajay kumar Rai Applied Physics Department PolytechnicThe M.S.University of Baroda Department of Applied Physics Sardar Vallabhbhai National Institute of Technology

The mass spectra of charmonium are investigated using a Coulomb plus linear（Cornell）*** wave functions in position space as well as in momentum space are employed to calculate the expectation values of potential and kinetic energy *** experimental states（X（4660）（5^3S1）,X（3872）（2^3P1）,X（3900）（2^1P1）,X（3915）（2^3P0）and X（4274）（3^3P1）etc.）are assigned as charmonium *** also study the Regge trajectories,pseudoscalar and vector decay constants,electric and magnetic dipole transition rates,and annihilation decay widths for charmonium states.

关键词： potential model mass spectrum decay constant Regge trajectories

Geochemistry and mineral chemistry of the armoor granitoids,eastern dharwar craton: implications for the redox conditions and tectono-magmatic environment

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Acta Geochimica 2024年第1期43卷 110-133页

作者： A.ajay kumar Ch.Ashok Department of Geology Osmania UniversityHyderabad 500007India CSIR-National Geophysical Research Institute UppalHyderabad 500007India

The mineralogical and geochemical characteristics of the K-rich granites from the Armoor granitic rocks in the northeastern portion of the Eastern Dharwar Craton(EDC) are *** order to understand its physicochemical conditions,the petrogenesis of the granitoid was explained from biotite chemistry and geochemical *** of mineral chemistry expose that compositionally,K-feldspar and plagioclase in Armoor granite rocks range from An0,Ab_(3-5.9),Or_(94-96.9) and An_(5-29,-Ab71.9-94.9),Or_(0-1.5),*** mineral chemistry of biotite crystals exhibits composition that varies from primary to re-equilibrated primary *** biotites from the Armoor granites generally exhibit an I-type trend,with calc-alkaline parental magma in a subduction *** chemistry of granites displays magnetite(oxidized)series nature,which has oxygen fugacity(fO_(2))=-15.1 to-16.7(log_(10) bar),under high oxidizing *** and pressure estimates for the crystallization of Armoor granites based on biotite composition are T=612-716 ℃ and 1.0-0.4 kbar,***,these rocks are metaluminous to slightly peraluminous and magnesian,with calc-alkaline potassiumrich *** the chondrite normalized REE diagram,the granites have positive europium anomalies;rich Sr/Y,(Dy/Yb)_(N) ratios and reduced Mg#,Rb/Sr,Rb,Sr indicate that the melting of earlier rocks,crystal accumulation and residual garnet source formed at high *** examined granites show that they are produced from the melting of crustal ***,the extensive analyses of the described Armoor granite suggest that they were produced by crust sources and developed under oxidizing conditions in subduction setting.

关键词： Armoor granites Oxygen fugacity Crystal accumulation Remelting Subduction

Spectroscopy of the ?_(ccb) baryon in the hypercentral constituent quark model

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Chinese Physics C 2018年第5期42卷 25-29页

作者： Zalak Shah ajay kumar Rai Department of Applied Physics Sardar Vallabhbhai National Institute of Technology

We extract the mass spectrum of the triply heavy baryon ?ccbusing the hypercentral constituent quark model. The first order correction is also added to the potential term of the Hamiltonian. The radial and orbital exc... 详细信息

关键词： baryons potential model Regge trajectories

A robust deep structured prediction model for petroleum reservoir characterization using pressure transient test data

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Petroleum Research 2022年第2期7卷 204-219页

作者： Rakesh kumar Pandey Anil kumar ajay Mandal Department of Petroleum and Energy Studies School of Engineering and TechnologyDIT UniversityDehradun248009India Data Science Research Group School of ComputingDIT UniversityDehradun248009India Department of Petroleum Engineering Indian Institute of Technology(Indian School of Mines)Dhanbad826004India

A robust deep learning model consisting of long short-term memory and fully connected neural net-works has been proposed to automatically interpret homogeneous petroleum reservoirs having infinite,no flow,and constant pressure outer boundary *** pressure change data recorded during the well test operation along with its derivative is input into the model to perform the classification for identifying the reservoir model and,further,regression to estimate output *** noise was added to analytical models while generating the synthetic training *** hyperparameters were regulated to perform model optimization,resulting in a batch size of 64,Adam optimization algorithm,learning rate of 0.01,and 80:10:10 data split ratio as the best choices of *** perfor-mance accuracy also increased with an increase in the number of samples during *** classification and regression metrics have been used to evaluate the performance of the *** paper also demonstrates the prediction performance of the optimized model using simulated and actual oil well pressure drawdown test *** proposed model achieved minimum and maximum relative errors of 0.0019 and 0.0308,respectively,in estimating output for the simulated test cases and relative error of 0.0319 for the real test case.

关键词： Well test Reservoir characterization Automatic interpretation Prediction model Hyperparameter tuning Performance indicator

Anthrax: A disease of biowarfare and public health importance

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World Journal of Clinical Cases 2015年第1期3卷 20-33页

作者： ajay kumar Goel Biotechnology Division Defence Research and Development Establishment Gwalior 474002 India

Bioterrorism has received a lot of attention in the first decade of this century. Biological agents are considered attractive weapons for bioterrorism as these are easy to obtain, comparatively inexpensive to produce and exhibit widespread fear and panic than the actual potential of physical damage. Bacillus anthracis(B. anthracis), the etiologic agent of anthrax is a Gram positive, spore forming, non-motile bacterium. This is supposed to be one of the most potent BW agents because its spores are extremely resistant to natural conditions and can survive for several decades in the environment. *** spores enter the body through skin lesion(cutaneous anthrax), lungs(pulmonary anthrax), or gastrointestinal route(gastrointestinal anthrax) and germinate, giving rise to the vegetative form. Anthrax is a concern of public health also in many countries where agriculture is the main source of income including India. Anthrax has been associated with human history for a very long time and regained its popularity after Sept 2001 incidence in United States. The present review article describes the history, biology, life cycle, pathogenicity, virulence, epidemiology and potential of B. anthracis as biological weapon.

关键词： Anthrax Bacillus anthracis Biological warfare Epidemiology Infection Public health