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International Journal of Digital Earth 2021年第12期14卷 1882-1896页

作者： laxmi kant sharma Rajani kant Verma Department of Environmental Science School of Earth SciencesCentral University of RajasthanAjmerIndia

Various countries have rapidly implemented strict actions to slow the blowout of *** events were dis-regarded,and anthropogenic activities such as industrial and transport systems were at a *** countries were on lockdown,including the largest emitters of carbon *** to these lockdowns,anthropogenic activities have been reduced and reported that air quality improves at a regional scale in many countries,including ***,the current study using Greenhouse Gases Observing Satellite(GOSAT/IBUKI)datasets to monitor the fluctuation of the average global concentration of dry mole fractions of atmospheric Methane(CH_(4))and Carbon Dioxide(CO_(2))during these pandemic lockdowns from January to June *** emphasize no significant reduction in the average concentration of dry mole fractions of atmospheric CH_(4) over the globe,but a minor reduction was observed in global CO_(2) *** average concentration of both gases compares at each ten-degree *** study reveals that,against the regional breakdowns,these short time lockdowns are not enough to control the concentration of these greenhouse gases at a larger scale,such as 10°latitude and globally,except for a minor reduction in CO_(2) concentration.

关键词： Lockdown pandemic air quality greenhouse gas methane carbon dioxide

High-precision inverse potentials for neutron-proton scattering using piece-wise smooth Morse functions

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Chinese Physics C 2024年第10期48卷 201-213页

作者： Ayushi Awasthi Arushi sharma Ishwar kant O.S.K.S.Sastri Department of Physics and Astronomical Science Central University of Himachal PradeshDharmshala176215India

The aim of this study is to construct inverse potentials for various ℓ-channels of neutron-proton scattering using a piece-wise smooth Morse function as a *** phase equations for single-channel states and the coupled equations of multi-channel scattering are solved numerically using the 5^(th) order Runge-kutta *** employ a piece-wise smooth reference potential comprising three Morse functions as the initial *** a machine learning-based genetic algorithm,we optimize the model parameters to minimize the mean-squared error between simulated and anticipated phase *** approach yields inverse potentials for both single and multichannel scattering,achieving convergence to a mean-squared error≤10^(-3).The resulting scattering lengths"a_(0)"and effective ranges"r"for ^(3)S_(1) and ^(1)S_(0) states,expressed as[a_(0),r],are found to be[5.445(5.424),1.770(1.760)]and[–23.741(–23.749),2.63(2.81)],respectively;these values are in excellent agreement with experimental ***,the calculated total scattering cross-sections are highly consistent with their experimental counterparts,having a percentage error of less than 1%.This computational approach can be easily extended to obtain interaction potentials for charged particle scattering.

关键词： inverse potentials neutron-proton scattering piece-wise smooth Morse function phase function method reference potential approach genetic algorithm

Exploring the Potential of Syzygium cumini(L.)Skeels(Jamun)Seed Powder as an Eco-Friendly Agent for Developing Friction Ridges on Porous and Nonporous Surfaces

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Journal of Forensic Science and Medicine 2024年第2期10卷 75-83页

作者： Vaibhav sharma Abhishek R.Rai Divyansh Jain Poonam Kumari Varad Nagar Anubhav Singh Kumud kant Awasthi Archana Gautam Tina sharma Mahipal Singh Sankhla Anuj sharma Department of Forensic Science Vivekananda Global UniversityJaipurRajasthanIndia School of Forensics Risk Management and National SecurityRashtriya Raksha UniversityLavadGujaratIndia Department of Life Sciences Vivekananda Global UniversityJaipurRajasthanIndia Department of Forensic Science UIAHSChandigarh UniversityMohaliPunjabIndia University Centre for Research and Development Chandigarh UniversityMohaliPunjabIndia Department of Forensic Science ITM UniversityGwaliorM.P.India

Background:Development of obscured fingerprints on a diverse range of surfaces is a crucial aspect of forensic *** and Objectives:In this particular study,the utilization of Syzygium cumini(L.)Skeels(Jamun)seed powder was examined for the purpose of revealing hidden fingerprints on a variety of surfaces,including both permeable and impermeable *** and Methods:The seed powder was extracted using a simple process and was analysed using multiple analytical *** efficacy of the jamun seed powder in developing latent fingerprints was ***:The findings of this investigation demonstrate that the jamun seed powder was capable of producing fingerprint patterns of exceptional quality and clarity on numerous ***:This research highlights the potential use of jamun seed powder as a practical and effective alternative for the development of hidden fingerprints in forensic investigations,while also providing cost-effectiveness.

关键词： Forensic investigation jamun seed latent fingerprints medicinal value

Characterization of saline soil for the halophytes of largest inland saline wetland of India using geospatial technology

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Journal of Oceanology and Limnology 2023年第4期41卷 1277-1291页

作者： Naik RAJASHREE sharma laxmi kant Singh AVINASH Department of Environmental Science School of Earth SciencesCentral University of RajasthanBandarsindriAjmer 305817India

About 23%of the surface area and 44%of the volume of all the lakes are occupied by saline lakes in the ***,agricultural diversion,illegal encroachment,pollution,and invasive species could cause these lakes to dry up completely or partially by *** saltpan encroachment is causing Sambhar,India’s largest saline lake,to shrink by 4.23%every *** study aims to characterize the soil parameters where halophytes are growing.A literature survey was conducted for halophytes and soil *** study area was divided into four zones for stratified random *** sampling was conducted in February *** soil indicators for halophyte selected were pH,electrical conductivity,moisture,salinity,organic carbon,and organic *** obtained results were interpolated in the geospatial platform for soil characteristic *** is found that no research is conducted on halophytes of the *** on soil are also inconsistent and only six common parameters could be *** show that the pH ranged 9.37-7.66,electrical conductivity was 16.1-0.38,moisture 23.37%-1.2%,organic carbon 3.29%-0.15%,organic matter 5.6%-0.2%,and salinity 8.86%-0.72%.Though these results show improved condition as compared to last few years,in long term,the lake is *** the UN Decade of Ecosystem Restoration(2021-2030),if these causes are not addressed,the ecosystem may completely dry up.

关键词： halophytes inland lakes saline wetlands soil geospatial mapping interpolation

A new lignan rhamnoside from Bauhinia retusa seed pods(Caesalpiniaceae)

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Chinese Chemical Letters 2011年第9期22卷 1081-1083页

作者： Sushma Semwal Rajni kant sharma Department of Chemistry HNB Garhwal Central University SrinagarUttarakhandIndia Department of Chemistry University of Cape TownCape TownRondebosch 7701South Africa

A new lignan rhamnoside identified as 2,6-di（4＇,5＇-dihydroxyphenyl）-3,7-dioxabicyclo[3.3.0]octane-1-hydroxy-5-O-rhamnopyranoside （1） has been isolated from the ethanolic extract of seed pods of Bauhinia retusa. ... 详细信息

关键词： Bauhinia retusa Caesalpiniaceae Lignan rhamnoside

Tectonic significance of dykes in the Sarnu-Dandali alkaline complex,Rajasthan, northwestern Deccan Traps

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Geoscience Frontiers 2016年第5期7卷 783-791页

作者： Anjali Vijayan Hetu Sheth Kamal kant sharma Department of Earth Sciences Indian Institute of Technology Bombay (IITB) Department of Geology Government Postgraduate College

Whether swarms of preferentially oriented dykes are controlled by regional stress fields, or passively exploit basement structural fabric, is a much debated question, with support for either scenario in individual case studies. The Sarnu-Dandali alkaline complex, near the northwestern limit of the Deccan Traps continental flood basalt province, contains mafic to felsic alkaline volcano-plutonic rocks and carbonatites. The complex is situated near the northern end of the 600 km long, NNWe SSE-trending Barmer-Cambay rift. Mafic enclave swarms in the syenites suggest synplutonic mafic dykes injected into a largely liquid felsic magma chamber. Later coherent dykes in the complex, of all compositions and sizes,dominantly strike NNWe SSE, parallel to the Barmer-Cambay rift. The rift formed during two distinct episodes of extension, NWe SE in the early Cretaceous and NEe SW in the late Cretaceous. Control of the southern Indian Dharwar structural fabric on the rift trend, as speculated previously, is untenable,whereas the regional Precambrian basement trends（Aravalli and Malani） run NEe SW and NNEe *** therefore suggest that the small-scale Sarnu-Dandali dykes and the much larger-scale BarmerCambay rift were not controlled by basement structure, but related to contemporaneous, late Cretaceous regional ENEe WSW extension, for which there is varied independent evidence.

关键词： Dyke swarms Alkaline magmatism Deccan Traps Sarnu-Dandali Barmer-Cambay rift

A new flavone C-glucoside from Glycosmis arborea(Rutaceae)

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Chinese Chemical Letters 2010年第12期21卷 1443-1445页

作者： Rajni kant sharma Sushma Semwal Devendra Singh Negi Department of Chemistry HNB Garhwal Central University SrinagarUttarakhandIndia Department of Chemistry University of Cape TownCape TownRondebosch 7701South Africa

A new C-glycosyl flavone 7,4＇-dihydroxy-5-methoxyflavone-6-C-β-D-glucopyranoside 1 has been isolated and characterized form ethanolic extract of leaves part of Glycosmis *** structure of compound was verified by mea... 详细信息

关键词： Glycosmis arborea Rutaceae Flavone C-glucoside

MRMR Based Feature Vector Design for Efficient Citrus Disease Detection

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Computers, Materials & Continua 2022年第9期72卷 4771-4787页

作者： Bobbinpreet Sultan Aljahdali Tripti sharma Bhawna Goyal Ayush Dogra Shubham Mahajan Amit kant Pandit Department of Electronics&Communication Engineering Chandigarh UniversityMohali140413India Department of Computer Science College of Computers and Information TechnologyTaif UniversityTaif21944Saudi Arabia Ronin Institute Mont ClairNJ07043USA School of Electronics&Communication Engineering Shri Mata Vaishno Devi UniversityKatra182320India

In recent times,the images and videos have emerged as one of the most important information source depicting the real time *** images nowadays serve as input for many applications and replacing the manual methods due to their capabilities of 3D scene representation in 2D *** capabilities of digital images along with utilization of machine learning methodologies are showing promising accuracies in many applications of prediction and pattern *** of the application fields pertains to detection of diseases occurring in the plants,which are destroying the widespread *** the disease detection process was done by a domain expert using manual examination and laboratory *** is a tedious and time consuming process and does not suffice the accuracy *** creates a room for the research in developing automation based methods where the images captured through sensors and cameras will be used for detection of disease and control its *** digital images captured from the field’s forms the dataset which trains the machine learning models to predict the nature of the *** accuracy of these models is greatly affected by the amount of noise and ailments present in the input images,appropriate segmentation methodology,feature vector development and the choice of machine learning *** ensure the high rated performance of the designed system the research is moving in a direction to fine tune each and every stage separately considering their dependencies on subsequent *** the most optimum solution can be obtained by considering the image processing methodologies for improving the quality of image and then applying statistical methods for feature extraction and *** training vector thus developed is capable of presenting the relationship between the feature values and the target *** this article,a highly accurate system model for detecting the diseases occurring in citrus fruits

关键词： Citrus diseases classification feature vector design plant disease detection redundancy reduction

NiCo2O4 decorated PANI–CNTs composites as supercapacitive electrode materials

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Journal of Energy Chemistry 2017年第1期26卷 175-181页

作者： Gunjana Chaudhary Ashok K.sharma Preetam Bhardwaj Kamal kant Indu Kaushal Ajay K.Mishra Thin Film Laboratory Department of Materials Science and NanotechnologyDeenbandhu Chhotu Ram University of Science and TechnologyMurthal 131039India Nanotechnology and Water Sustainability Research Unit College of ScienceUniversity of South AfricaUnisa Science CampusJohannesburgSouth Africa

Hierarchical Ni CoO/PANI/CNTs hybrid composites were designed and fabricated having a layer of Ni CoOon the surface of PANI encapsulated CNTs with different morphologies. Physicochemical attributes of the synthesized composites were examined by FTIR, UV–visible and X-ray diffraction（XRD）techniques. Morphological aspects were evaluated by field-emission scanning microscopy（FESEM）,electron diffraction spectroscopy（EDS）, high resolution transmission electron microscopy（HRTEM） and selected area electron diffraction（SAED） studies. Electrochemical measurements revealed an improved specific capacitance of 2250 F/g at a scan rate of 5 m V/s and 2000 F/g at a current density of 1 A/g with good rate capability using a three-electrode system. These enhanced features are achieved from the well designed nanostructure and the synergistic contributions of individual components in the electrode material.

关键词： Polyaniline Carbon nanotubes Nickel cobaltite Supercapacitor

A review on emerging materials with focus on BiI_(3) for room-temperature semiconductor radiation detectors

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Radiation Detection Technology and Methods 2023年第4期7卷 465-483页

作者： Ritu Chaudhari Chhaya Ravi kant Alka Garg Surender Kumar sharma Department of Applied Sciences and Humanities Indira Gandhi Delhi Technical University for WomenKashmere GateDelhi110006India Gargi College University of DelhiSiri Fort RoadNew Delhi110049India Delhi Skill and Entrepreneurship University New DelhiIndia

Purpose Considerable advances in the fundamental knowledge and applications of radiation science have led to significant progress and development of room-temperature semiconductor radiation detectors(RTSD).The RTSDs technologies are continuously evolving with accelerated research and material engineering in the last *** scientific and technological advancements have led to development of high-performance radiation detectors with high signal-to-noise ratio(SNR),better sensitivity,faster response and higher-resolution with capability of desired room-temperature *** paper is a review on emerging semiconductor radiation detector materials with a deeper insight into the prospective role of Bismuth tri-iodide(BiI_(3))for room-temperature radiation *** An introduction of the state of art of most developed semiconductor materials,i.e.,cadmium telluride(CdTe),mercury iodide(HgI_(2)),lead iodide(PbI_(2)),etc.,and a critical examination of properties,shortcomings and challenges related to their synthesis have been ***-semiconductor composites with desirable properties and their integration into detector devices is also *** sections discuss the role of BiI_(3) as an emerging radiation detector material for room-temperature operation with an in-depth discussion on the role of defects in charge transportation and electrode ***,the current challenges along with the future prospects of these materials for radiation detection to promote continuous innovation and practical applications are also *** The comprehensive review on latest developments in room-temperature radiation detector materials is expected to help establish a technological roadmap for the synthesis,fabrication and commercialization of novel materials for development of efficient radiation detectors.

关键词： Radiation detector Defects Electrical properties Bismuth tri-iodide Semiconductor Toxicity