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Modelling the potential risk zone of Lantana camara invasion and response to climate change in eastern India

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Ecological Processes 2022年第1期11卷 142-154页

作者： Sharad Tiwari S.N.Mishra Dharmendra kumar Basant kumar S.N.Vaidya Brojo Gopal ghosh Sk Mujibar Rahaman Masjuda Khatun Sanjoy Garai amit kumar Institute of Forest Productivity LalgutwaRanchi 835303JharkhandIndia Department of IT Govt.of JharkhandJharkhand Space Application CentreRanchiIndia Department of Geoinformatics Central University of JharkhandRanchi 835205JharkhandIndia

Background:The aim of this study is to elucidate the potential risk zones prone to the invasion of perennial ornamental plant Lantana camara,which is native to South America and has invasive tendency in Jharkhand,eastern India,for present(2020)and the future(2050)climatic conditions under four different Representative Concentration Pathways scenarios(RCPs).We analysed the current distribution pattern of *** in the plateau region of eastern India and identified potentially suitable habitats prone to its further infestation in the future under the climate change ***:Results showed the presence of *** invasion in~13%of the geographical area of Jharkhand,Cho-tanagpur plateau which may expand up to 20–26%by 2050 depending upon emission scenarios as characterised by the four *** for the current scenario suggests the dominance of *** in sub-zone V(12.77%under high risk zones(HRZ)and 9.5%under critical risk zones(CRZ))followed by sub-zones IV(6.7%:HRZ;4.19%:CRZ)and VI(2.49%:HRZ;2.14%:CRZ).Future projection(2050)indicates a possible expansion of its distribution range across all agro-climatic sub-zones with dominance in sub-zones V and *** Bio_4(temperature seasonality)was observed as the most contributing factor for the distribution of *** for current and future scenarios across all *** habitat for *** mostly occurred under natural vegetation(66.05%of CRZ and 60.71%of HRZ)and agriculture landscape(29.51%of CRZ and 34.48%of HRZ).Conclusions:The study provides an insight of invasion of *** in the plateau region of eastern India,and reveals wide distribution across all the agro-climatic sub-zones of Jharkhand,mostly in open and disturbed areas under natural vegetation and agriculture *** projections for the year 2050 suggest a continuous increase in the expansion range of invasion across Jharkhand and call for urgent initiatives to combat its further invasion.

关键词： Climate change Forest Invasion Lantana camara Maxent RCPs

COVID-19's impacts on dengue transmission:Focus on neighbourhood surveillance of Aedes mosquitoes

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Asian Pacific Journal of Tropical Medicine 2022年第8期15卷 339-340页

作者： Susanta kumar ghosh Chaitali ghosh ICMR-National Institute of Malaria Research BangaloreIndia Tata Institute for Genetics and Society BangaloreIndia

The ongoing COVID-19 pandemic has impacted the entire globe on all fronts,and vector-borne diseases are not an *** are certain similarities between dengue and COVID-19 since both diseases are positive-sense single-stranded RNA virus and have animal origin ***,both the diseases present over 80%asymptomatic *** is the most prevalent and fast-emerging viral infection *** dengue virus(DENV)has four serotypes,namely DENV-1,DENV-2,DENV-3 and DENV-4,and it is possible that the same person can be infected four times before full immunity is established[1];whereas,COVID-19 is an air-borne respiratory disease caused by the severe acute respiratory syndrome coronavirus 2,and several variants have emerged over *** late 2020,the variants posed an increased risk to global public health emergency,which prompted the characterisation of specific Variants of Interest and Variants of Concern to mitigate the COVID-19 pandemic[2].DENV is transmitted by several species of day-biting Aedes *** are highly adaptive and invasive species and are predominantly found in the tropical and subtropical *** recent decades,these mosquitoes have been discovered in all continents except *** aegypti and Aedes albopictus are two major vectors of *** means wherever these mosquitoes make their footprints,dengue creeps in.

关键词： immunity Focus prompt

Simplistic hydrothermal synthesis approach for fabricating photoluminescent carbon dots and its potential application as an efficient sensor probe for toxic lead(II)ion detection

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Frontiers of Chemical Science and Engineering 2023年第5期17卷 536-547页

作者： Trisita ghosh Rajkumar Sahoo Suman kumar ghosh Pallab Banerji Narayan Ch.Das Rubber Technology Centre Indian Institute of Technology KharagpurKharagpur 721302India Department of Chemistry Indian Institute of Technology KharagpurKharagpur 721302India Materials Science Centre Indian Institute of Technology KharagpurKharagpur 721302India

The past decade has witnessed a variety of members of the carbon family along with exposure of carbon dots due to their magnificent properties in sensing,bioimaging,catalytic applications,biomedical fields,and so ***,we report the simple hydrothermal method to fabricate photoluminescent doped carbon quantum dots for the detection of noxious lead(II)***(II)ion is very venomous for both the environment and human health for which its detection is demanded area in the research *** as-prepared carbon dots show excellent photostability,low toxicity and significant photoluminescence properties along with good water *** with these properties,carbon dots have a quantum yield of approximately 15%.In the practical field of application,these carbon dots have been used as sensing probes for the detection of lead(II)ions with a detection limit of 60 nmol·L^(–1).The fluorescence intensity of carbon dots was remarkably quenched in the presence of the lead(II)ion selectively among all the tested metal ***,we have studied the Stern–Volmer relationship for lead(II)quenching along with the explanation of the probable quenching *** of the doped carbon dots in heavy metal ions sensing in an environmental sample was demonstrated.

关键词： carbon dots fluorescence heavy metal sensing practical application photoluminescence

Geochemical signatures of potassium metasomatism in anthracite from the Himalayan fold‑thrust belts of Sikkim,India

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International Journal of Coal Science & Technology 2022年第2期9卷 48-69页

作者： Santanu ghosh Anwita Ojha Atul kumar Varma Coal Geology and Organic Petrology Laboratory Department of Applied GeologyIndian Institute of Technology(Indian School of Mines)DhanbadJharkhand 826004India Department of Earth Sciences Indian Institute of Technology BombayPowaiMumbaiMaharashtra 400076India

The present study focuses on the inorganic geochemical features of the bituminous coal samples from the Raniganj and the Jharia Basins,as well as the anthracite samples from the Himalayan fold-thrust belts of Sikkim,*** SiO_(2)content(48.05 wt%to 65.09 wt%and 35.92 wt%to 50.11 wt%in the bituminous and anthracite samples,respectively)and the ratio of Al_(2)O_(3)/TiO_(2)(6.97 to 17.03 in the bituminous coal samples and 10.34 to 20.07 in the anthracite samples)reveal the intermediate igneous source rock composition of the *** ratio of the K_(2)O/Al_(2)O_(3)in the ash yield of the bituminous coal samples(0.03 to 0.09)may suggest the presence of kaolinite mixed with montmorillonite,while its range in the ash yield of the anthracite samples(0.16 to 0.27)may imply the presence of illite mixed with *** chemical index of alteration values may suggest the moderate to strong chemical weathering of the source rock under sub-humid to humid climatic *** plot of the bituminous coal samples in the A–CN–K diagram depicts the traditional weathering trend of parent rocks,but the anthracite samples plot near the illite feld and are a bit ofset from the weathering *** may imply the plausible infuences of the potassium-metasomatism at post coalifcation stages,which is further supported by high K_(2)O/Na_(2)O ratio(29.88–80.13).The Fourier transform infrared spectra further reveal the hydroxyl stretching intensity of illite in the anthracite samples substantiating the efect of the epigenetic *** decrease in total kaolinite intensity/compound intensity of quartz and feldspar may provide additional evidence towards this epigenetic event.

关键词： Himalayan fold-thrust belts Anthracite Potassium metasomatism Kaolinite to quartz-feldspar intensity ratio Montmorillonite stretching and bending intensities Illite-stretching frequency

COVID-19 therapeutics:Clinical application of repurposed drugs and futuristic strategies for target-based drug discovery

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Genes & Diseases 2023年第4期10卷 1402-1428页

作者： Sunny kumar Malini Basu Pratyasha ghosh Uttam Pal Mrinal K.ghosh Cancer Biology and Inflammatory Disorder Division Council of Scientific and Industrial Research-Indian Institute of Chemical Biology(CSIR-IICB)TRUE CampusCN-6SectoreVSalt LakeKolkata-700091&4Raja S.C.Mullick RoadJadavpurKolkata 700032India Department of Microbiology Dhruba Chand Halder CollegeDakshin BarasatWest Bengal 743372India Department of Economics Bethune CollegeUniversity of CalcuttaKolkata 700006India

Severe acute respiratory syndrome coronavirus-2(SARS-CoV-2)causes the compli-cated disease *** are continuously facing huge problems in the treatment of patients,as COVID-19-specific drugs are not available,hence the principle of drug repurpos-ing serves as a one-and-only ***,the repurposing of many drugs is underway;few of them are already approved by the regulatory bodies for their clinical use and most of them are in different phases of clinical *** in this review,our main aim is to discuss in detail the up-to-date information on the target-based pharmacological classification of repurposed drugs,the potential mechanism of actions,and the current clinical trial status of various drugs which are under repurposing since early *** last,we briefly proposed the probable phar-macological and therapeutic drug targets that may be preferred as a futuristic drug discovery approach in the development of effective medicines.

关键词： Clinical trials COVID-19 Drug discovery Pharmacology Repurposing of drugs SARS-CoV-2

Adaptive relay co-ordination using a busbar splitting approach for a system integrity protection scheme

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Protection and Control of Modern Power Systems 2022年第1期7卷 189-200页

作者： Rajesh Saikrishna Nilesh kumar Rajalwal Debomita ghosh Birla Institute of Technology Mesra Ranchi India

Power system faults can often result in excessively high *** sustained for a long time,such high currents can damage system ***,it is desirable to operate the relays in the minimum possible *** this paper,a busbar splitting approach is used for adaptive relay setting and co-ordination purposes for a system integrity protec-tion scheme(SIPS).Whenever a fault occurs,the busbar splitting scheme splits a bus to convert a loop into a radial *** splitting schemes are chosen such that the net fault current is also *** splitting elimi-nates the dependency upon minimum breakpoints set(MBPS)and reduces the relay operating time,thus making it *** proposed methodology is incorporated into the IEEE 14-bus and IEEE 30-bus systems with single and multiple fault *** modeling and simulation carried out in ETAP,and the results of the proposed busbar splitting-based relay co-ordination are compared with the MBPS splitting-based relay co-ordination.

关键词： System integrity protection scheme(SIPS) Relay co-ordination Minimum breakpoint set(MBPS) Ward equivalent method Busbar splitting Wide area monitoring system(WAMS) ETAP

Parallel inverter control using different conventional control methods and an improved virtual oscillator control method in a standalone microgrid

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Protection and Control of Modern Power Systems 2022年第1期7卷 393-405页

作者： Vikash Gurugubelli Arnab ghosh Anup kumar Panda Department of Electrical Engineering National Institute of Technology RourkelaRourkelaOdisha 769008India

Partly because of advances in power electronic converters,the share of renewable energy in power generation is steadily *** main medium of interface for integrating renewable energy sources to the utility grid is the power electronic *** oscillator control(VOC)is a time-domain approach for controlling parallel inverters in a standalone microgrid(MG).The concept is to simulate nonlinear deadzone oscillator dynamics in a system of invert-ers to ensure a stable AC MG in the absence of *** is a time-domain and self-synchronizing control-ler that simply requires the measurement of filter current,whereas traditional droop control and the virtual synchro-nous machine(VSM)require low pass filters for active and reactive power *** this work,a particle swarm optimization(PSO)-based VOC method(VOC-PSO)is proposed,in which the parameters of the VOC are designed using the PSO *** system performance using droop,VSM,VOC,and VOC-PSO controllers are investigated using MATLAB and Opal-RT real-time digital simulator *** results show that the proposed VOC-PSO gives improved performance over other control *** efficacy of the proposed VOC-PSO control method is also demonstrated by the experimental results.

关键词： VOC VSM Droop control Particle swarm optimization Parallel inverters Standalone microgrid

Robust backstepping global integral terminal sliding mode controller to enhance dynamic stability of hybrid AC/DC microgrids

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Protection and Control of Modern Power Systems 2023年第1期8卷 139-151页

作者： Tushar Kanti Roy Subarto kumar ghosh Sajeeb Saha Department of Electronics&Telecommunication Engineering Rajshahi University of Engineering and TechnologyRajshahi 6204Bangladesh Department of Electrical and Electronic Engineering Rajshahi University of Engineering and TechnologyRajshahi 6204Bangladesh School of Science Technology and EngineeringUniversity of the Sunshine CoastMoreton Bay CampusQueenslandAustralia

In this paper,a Backstepping Global Integral Terminal Sliding Mode Controller(BGITSMC)with the view to enhancing the dynamic stability of a hybrid AC/DC microgrid has been *** proposed approach controls the switch-ing signals of the inverter,interlinking the DC-bus with the AC-bus in an AC/DC microgrid for a seamless interface and regulation of the output power of renewable energy sources(Solar Photovoltaic unit,PMSG-based wind farm),and Battery Energy Storage *** proposed control approach guarantees the dynamic stability of a hybrid AC/DC microgrid by regulating the associated states of the microgrid system to their intended *** dynamic stabil-ity of the microgrid system with the proposed control law has been proved using the Control Lyapunov Function.A simulation analysis was performed on a test hybrid AC/DC microgrid system to demonstrate the performance of the proposed control strategy in terms of maintaining power balance while the system’s operating point ***,the superiority of the proposed approach has been demonstrated by comparing its performance with the existing Sliding Mode Control(SMC)approach for a hybrid AC/DC microgrid.

关键词： Dynamic stability Hybrid AC/DC microgrids Power balance Robust backstepping controller Global integral terminal sliding mode controller Switching control signals

Reliability and efficiency enhancement of a radial distribution system through value-based auto-recloser placement and network remodelling

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Protection and Control of Modern Power Systems 2023年第1期8卷 1-14页

作者： Bratati ghosh Ajoy kumar Chakraborty Arup Ratan Bhowmik Department of Electrical Engineering National Institute of Technology AgartalaJiraniaTripura 799046India

The electric distribution system(EDS)is prone to faults leading to power *** present energy market demands that electricity utilities invest more in different measures to improve the performance of the *** approach proposed here details a composite dual-phased methodology to improve the reliability and efficiency of the power delivered by the *** the first phase,the optimal allocation of auto-reclosers(AR)is undertaken by employing a newly formulated *** determination of the total number and location for AR placement is based on the economic analysis of two factors,i.e.,AR investment-maintenance cost and total benefit earned in terms of reliability improvement due to AR *** analysis also takes into account the impact of power outages on different load types,the load growth rate,and the inflation ***,to enhance the efficiency of the AR-incorpo-rated EDS,the technique of Radial Distribution System Remodelling is employed in the second *** method searches for a radial configuration that delivers power at minimum line *** phases comprising complex combinatorial operations are aided by a fresh hybrid of the Sine Cosine Algorithm,Krill Herd Algorithm,and a genetic operator of Differential *** results obtained from its application on the IEEE 69-bus distribution test system prove the credibility of the suggested formulation.

关键词： Auto-recloser placement Load flow Metaheuristic optimization algorithm Power loss minimization Reconfiguration Reliability assessment