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Socio-scientific quantification of the comprehensive benefits of debris flow mitigation measures for villages in western Sichuan, China

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Journal of Mountain Science 2024年第5期21卷 1598-1612页

作者： DENG Ting XU Pei LI Ming LU Yafeng WANG Yukuan LI Zhengyang shravan kumar ghimire Institute of Mountain Hazards and Environment Chinese Academy of SciencesChengdu 610299China University of Chinese Academy of Sciences Beijing 100049China

Debris flow hazards seriously threaten thesafety and sustainable development of mountainousareas. Numerous debris flow mitigation measures havebeen implemented worldwide;however, acomprehensive assessment of the specific disasterreduction effects of these measures and their economic,social and ecological benefits is yet to be *** western region of Sichuan Province frequentlysuffers from geohazards such as debris flow, and thegovernment has adopted many mitigation *** study assessed the benefits of debris flowmitigation measures and identified the key influencingfactors via a field-based study conducted in 81 villagesin western Sichuan province, China. A framework forthe evaluation of the benefits of rural debris flowmitigation measures was constructed andquantitatively evaluated using a survey. Snowballsampling was performed to recruit 81 village leadersand 468 farmers. The results showed that managementand engineering measures were the main methodsused to mitigate debris flow;ecological measures wereauxiliary. The average satisfaction scores of farmers forthese three types of measures were 4.07, 3.90, and 3.56,respectively (as measured on a five-point Likert scale).In contrast, in terms of the benefits of these mitigationmeasures, only a small proportion of villages (11.11%)obtained a high level of comprehensive benefits fromthe debris flow mitigation measures, while the majority(88.89%) received medium to low-level benefits. Toimprove this situation, we further studied and foundthat the main factors that restricted villages fromachieving high-level comprehensive benefits were theunpredictable nature of debris flows, labour forceoutflow and remoteness. Effective control measures, agood economic environment and strong governmentassistance were reported as crucial factors forimproving these comprehensive benefits. This studyprovides socio-scientific references for decisionmakingon rural debris flow mitigation measures while keeping villages at the

关键词： Mitigation measures Comprehensive benefit evaluation Debris flow Mountain development Rural areas

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Froth flotation of refuse coal fines and process optimization using 2D surface plots

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Journal of Central South University 2016年第10期23卷 2520-2525页

作者： shravan kumar Veomesh Rawat Department of Fuel and Mineral Engineering Indian School of Mines

Refuse coal fines of size <500 μm was collected from a metallurgical coal preparation plant located in the eastern coalfield region of India. The coal was beneficiated using froth flotation technique to recover clean coal with ash content of about 20% with the highest possible yield. Diesel oil as collector and pine oil as frother were used. Box-Behnken statistical design was followed for analyzing the performance at varying pulp density, collector and frother dosage. Results were discussed using 2D surface plots. Response function predictions determined by the regression analysis show coefficient of correlation(R^2) for yield and the ash content as 0.72 and 0.86, respectively. The highest yield of 45.79% is obtained at pulp density 10%, collector dose 2 kg/t and frother dose 1.5 kg/t. The lowest ash content of 18.9% is obtained at pulp density 10%, collector dose 1 kg/t and frother dose 1 kg/t.

关键词： refuse coal froth flotation Box-Behnken 2D RSM

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Performance analysis of jig for coal cleaning using 3D response surface methodology

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International Journal of Mining Science and Technology 2017年第2期27卷 333-337页

作者： kumar shravan Venugopal R. Department of Fuel and Mineral Engineering Indian Institute of Technology(ISM)Dhanbad826004India

Beneficiation of coal of -4.76 mm + 3 mm size fraction was investigated in a laboratory model Denver *** variables were studied to analyze their effect on the performance of jig in terms of yield and ash content of clean coal. Three-factor three-level Box-Behnken design of experiments with response surface methodology(RSM) was employed to understand the performance behavior of jig. From the study, the bed height was found to be the most significant parameter affecting the yield and ash content of clean coal. It was possible to reduce the ash content from 24.32% in feed to an ash content of 16.55% in clean coal at 2 L/min water flow rate and 10 min jigging time. Influence of operating variables of the jig on responses was presented and discussed in 3D surface plots. The developed model was found to be significant within the range of parameters under investigation with correlation of co-efficient values as 0.99(yield) and 0.98(ash).

关键词： Coal beneficiation Jigging Bed height 3D-RSM Box-Behnken

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Multipliers on Vector-valued L^1-spaces for Hypergroups

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Acta Mathematica Sinica,English Series 2018年第7期34卷 1059-1073页

作者： R.SARMA N.shravan kumar Vishvesh kumar Department of Mathematics Indian Institute of Technology Delhi

In this article, we extend the well known Wendel＇s theorem to the context of vector-valued L1-spaces on hypergroups. In this regard, various cases have been studied.

关键词： Vector-valued Ll-spaces hypergroups multipliers translation invariant operators Fouriertransform

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Metaheuristics with Vector Quantization Enabled Codebook Compression Model for Secure Industrial Embedded Environment

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Intelligent Automation & Soft Computing 2023年第6期36卷 3607-3620页

作者： Adepu shravan kumar S.Srinivasan Department of Biomedical Engineering Saveetha School of EngineeringSaveetha Institute of Medical and Technical SciencesSaveetha UniversitySaveetha NagarThandalamChennai602105India

At the present time,the Industrial Internet of Things(IIoT)has swiftly evolved and emerged,and picture data that is collected by terminal devices or IoT nodes are tied to the user's private *** use of image sensors as an automa-tion tool for the IIoT is increasingly becoming more *** to the fact that this organisation transfers an enormous number of photographs at any one time,one of the most significant issues that it has is reducing the total quantity of data that is sent and,as a result,the available bandwidth,without compromising the image *** compression in the sensor,on the other hand,expedites the transfer of data while simultaneously reducing bandwidth *** traditional method of protecting sensitive data is rendered less effective in an environment dominated by IoT owing to the involvement of third *** image encryp-tion model provides a safe and adaptable method to protect the confidentiality of picture transformation and storage inside an IIoT *** helps to ensure that image datasets are kept *** Linde–Buzo–Gray(LBG)methodology is an example of a vector quantization algorithm that is extensively used and a rela-tively new form of picture reduction known as vector quantization(VQ).As a result,the purpose of this research is to create an artificial humming bird optimi-zation approach that combines LBG-enabled codebook creation and encryption(AHBO-LBGCCE)for use in an IIoT *** the beginning,the AHBO-LBGCCE method used the LBG model in conjunction with the AHBO algorithm in order to construct the *** Burrows-Wheeler Transform(BWT)model is used in order to accomplish codebook *** addition,the Blowfish algorithm is used in order to carry out the encryption procedure so that security may be attained.A comprehensive experimental investigation is carried out in order to verify the effectiveness of the proposed algorithm in comparison to other *** experimental values ensure that the suggeste

关键词： Codebook compression industrial internet of things lbg model metaheuristics vector quantization

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Predicting the impact of climate change on the distribution of two threatened Himalayan medicinal plants of Liliaceae in Nepal

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Journal of Mountain Science 2017年第3期14卷 558-570页

作者： RANA Santosh kumar RANA Hum Kala ghimire Suresh Kulllar SHRESTHA Krishna kumar RANJITKAR Sailesh Key Laboratory for Plant Diversity and Biogeography of EastAsia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China Central Department of Botany Tribhuvan UniversityKirtipurKathmanduNepal World Agroforestry Centre East and Central Asia 132 Lanhei RdHeilongtanKunming 650201China

Predicting the potential distribution of medicinal plants in response to climate change is essential for their conservation and management. Contributing to the management program, this study aimed to predict the distribution of two threatened medicinal plants, Fritillaria cirrhosa and Lilium nepalense. The location of focal species gathered from herbarium specimen housed in different herbaria and online databases were geo-referenced and checked for spatial autocorrelation. The predictive environmental variables were selected, and MaxEnt software was used to model the current and future distributions of focal species. Four Representative Concentration Pathway （RCP） trajectories of the BCC-CSMI.1 model were used as the future （2050） projection layer. The MaxEnt modelling delineated the potential distribution of F. cirrhosa and L. nepalense. The current suitability is projected towards Central and Eastern Hilly/Mountainous regions. Both species gain maximum suitability in RCP 4.5 which decline towards other trajectories for L. nepalense. Overall, both the focal species shift towards the north-west, losing their potential habitat in hilly and lower mountainous regions by 2050 across all trajectories. Our results highlight the impact of future climate change on two threatened and valuable species. The results can be further useful to initiate farming of these medicinally and economically important species based on climatically suitable zone and for designing a germplasm conservation strategy.

关键词： Commercial exploitation Conservation Lily Fritillaria cirrhosa Lilium nepalense MaxEntmodelling Species distribution

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An Optimized Fractional Order PI Controller for Enhancing the Power Quality of Three-phase Solar PV, BESS and Wind Integrated UPQC

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Chinese Journal of Electronics 2023年

作者： shravan kumar Yadav Krishna Bihari Yadav Department of Electrical Engineering National Institute of Technology

This paper focuses on an optimized Fractional order proportional integral(FOPI) Controller for enhancing the power quality of three-phase hybrid energy storage system integrated with Unified Power Quality Conditioner(UPQC). With a view to providing continuous electricity, renewable energy sources(RES) like photovoltaic(PV) array, battery energy storage system(BESS) and wind energy are modeled. To ease the grid’s power quality issues and the harmonics injected by nonlinear loads there endures the UPQC model with series and shunt active filter compensator. Furthermore, PV,wind, and BESS integrated UPQC are capable of solving power quality issues in the event of long voltage interruptions. The shunt compensator of UPQC extracts the power from the hybrid energy systems whereas the load is protected by the series compensator from the grid related power quality issues. Hence, to regulate the voltage of the DC link at the desired level, this paper intends to develop a FOPI controller that exhibits iso-damping properties. Particularly, the gain of the FOPI controller is optimally tuned by a novel hybrid algorithm known as enhanced seagull with rooster update(ES-RU) algorithm that hybrid the concepts of seagull optimization algorithm(SOA) and chicken swarm optimization(CSO).At last, the proposed method was validated during voltage sag/swell, concerning the total harmonic distortion.

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GC-MS analysis of volatile compounds of Perilla frutescens Britton var. Japonica accessions: morphological and seasonal variability

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Asian Pacific Journal of Tropical Medicine 2017年第7期10卷 705-714页

作者： Bimal kumar ghimire Ji Hye Yoo Chang Yeon Yu Ill-Min Chung Department of Applied Life Science Konkuk University Bioherb Research Institute Kangwon National University

Objective: To investigate the composition of volatile compounds in the different accessions of Perilla frutescens(P. frutescens) collected from various habitats of China and Japan. Methods: In the present study, the essential oil from the leaves of P. frutescens cultivars from China and Japan was extracted by hydro-distillation and the chemical composition and concentration of the volatile components present in the oils were determined by gas chromatography–mass spectrometry(GC–MS) analysis. Results: Among the volatile components, the major proportion was of perilla ketone, which was followed by elemicin and beta-caryophyllene in the Chinese Perilla cultivars. The main component in the oil extracted from the Japanese accessions was myristicin, which was followed by perilla ketone and beta-caryophyllene. We could distinguish seven chemotypes, namely the perilla ketone(PK) type, perilla ketone, myristicin(PM) type, perilla ketone, unknown(PU) type, perilla ketone, beta-caryophyllene, myristicine(PB) type, perilla ketone, myristicin, unknown(PMU) type, perilla ketone, elemicine, myristicin, beta-caryophyllene(PEMB) type, and the perilla ketone, limonene, betacryophyllene, myristicin(L) type. Most of the accessions possessed higher essential oil content before the flowering time than at the flowering stage. The average plant height, leaf length, leaf width of the Chinese accessions was higher than those of the Japanese accessions. Conclusion:The results revealed that the harvest time and geographical origin caused polymorphisms in the essential oil composition and morphological traits in the Perilla accessions originating from China and Japan. Therefore, these chemotypes with desirable characters might be useful for industrial exploitation and for determining the harvest time.

关键词： Perilla frutescens Essential oil GC–MS analysis Morphological character Harvesting time

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Evaluation of Pre-Emergence and Post-Emergence Herbicides for Weed Management in Miscanthus sacchariflorus and Miscanthus sinensis

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Phyton-International Journal of Experimental Botany 2023年第5期92卷 1439-1467页

作者： Bimal kumar ghimire Chang Yeon Yu Seung Hyun Kim Ill Min Chung Department of Crop Science College of Sanghuh Life ScienceKonkuk UniversitySeoul05029Korea Bioherb Research Institute Kangwon National UniversityChuncheon24341Kore

Miscanthus,is a promising bioenergy crop,considered superior to other bioenergy crops because of its higher water and nutrient use efficiency,cold tolerance,and higher production of *** weeds and grass weeds,cause major problems in the Miscanthus field.A field experiment was conducted in 2018 and 2019,to assess the effects of pre-emergence(alachlor and napropamide)and post-emergence herbicides(nicosulfuron,dicamba,bentazon,and glufosinate ammonium)on broadleaf and grass weeds in *** and *** *** weed control efficiency and phytotoxicity of pre-and post-emergence herbicides were evaluated at 30 days after treatment(DAT)and compared to those of the control *** results showed wide variations in the susceptibility of the weed species to the treated *** with nicosulfuron 40 ***^(-1) provided the most effective overall weed control(with 10%visual injury),without affecting the height and biomass of neither Miscanthus species in the ***-emergence herbicides such as glufosinate ammonium 400 ***^(-1) and dicamba 482 ***^(-1) were effective and inhibited the growth and density of the majority of weeds to a 100%;however,they showed significant phytotoxicity(toxicity scale of 1-10)to both species of *** application of glufosinate ammonium caused severe injuries to the foliar region(90%visual injury)of both Miscanthus ***,*** showed a slightly higher tolerance to the herbicides nicosulfuron,bentazon and napropamide with 10%visual injury at the recommended dose than *** present study clearly showed that infestation of broadleaf and grass weeds in Miscanthus fields can cause significant damage to the growth and biomass of Miscanthus and applying pre-emergence and post-emergence herbicides effectively controls the high infestation of these weeds.

关键词： miscanthus herbicides weeds biomass chlorophyll visual injury

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The conserved ubiquitin-like protein Hub1 plays a critical role in splicing in human cells

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Journal of Molecular Cell Biology 2014年第4期8卷 312-323页

作者： Tim Ammon shravan kumar Mishra Kaja Kowalska Grzegorz M. Popowicz Tad A. Holak Stefan Jentsch Department of Molecular Cell Biology Max Planck Institute of Biochemistry Am Klopferspitz 18 82152 Martinsried Germany NMR Spectroscopy Max Planck Institute of Biochemistry Am Klopferspitz 18 82152 Martinsried Germany Department of Biological Sciences Indian Institute of Science Education and Research (IISER) Mohali Knowledge City Sector 81 SAS Nagar 140306 Punjab India Institute of Structural Biology Helmholtz Zentrum MLinchen Ingolst~idter Landstrasse 1 85764 Neuherberg Germany Faculty of Chemistry Jagiellonian University Ingardena 3 30-060 Cracow Poland

Different from canonical ubiquitin-like proteins, Hub1 does not form covalent conjugates with substrates but binds proteins noncovalently. In Socchoromyces cerevisioe, Hub1 associates with spUceosomes and mediates alternative splicing of SRCI, without affecting pre-mRNA splicing generaity. Human Hub1 is highty similar to its yeast homotog, but its cellular function remains largely unexplored. Here, we show that human Hub1 binds to the spliceosomal protein Snu66 as in yeast; however, unlike its 5. cerevisioe homolos, human Hub1 is essential for viability. Prolonged in vivo depletion of human Hub1 leads to various cellular defects, including splicing speckle abnormalities, partial nuclear retention of mRNAs, mitotic catastrophe, and consequently cell death by apoptosis. Early consequences of Hub1 depletion are severe splicing defects, however, only for specific splice sites leading to exon skipping and intron retention. Thus, the ubiquitin-iike protein Hub1 is not a canonlcal spliceosomal factor needed generally for splicing, but rather a modulator of spliceosome performance and facilitator of alternative splicing.

关键词： apoptosis Hubl splicing spliceosome ubiquitin-like proteins

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