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An Algorithm for the Protection of Distribution Feeders Using the Stockwell and Hilbert Transforms Supported Features

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CSEE Journal of Power and Energy Systems 2021年第6期7卷 1278-1288页

作者： OM Prakash Mahela Jaya Sharma bipul kumar Baseem Khan Hassan Haes Alhelou the Power System Planning Division Rajasthan Rajya Vidyut Prasaran Nigam Ltd.Jaipur-302005India Department of Electrical Engineering Rajasthan College of Engineering for WomenJaipurIndia the Department of Electrical and Computer Engineering Hawassa UniversityHawassa 1530Ethiopia the Department of Electrical Power Engineering Faculty of Mechanical and Electrical EngineeringTishreen UniversityLattakia 2230Syria

Faults’recognition in the distribution feeders(DFs)is extremely important for improving the reliability of the distribution ***,this paper proposes a technique to identify the faults on the DF using the Stockwell Transform(ST)dependent variance feature and Hilbert transform(HT)by utilizing current *** element to element multiplication of the H-index,we compute using HT aided decompositions of current waveforms and VS-index,and calculate through ST aided decomposition of current *** utilizing the decision rules,various faults are *** faults studied in this work are line to ground,double line,double line to ground and 3-Φto *** high fault impedance,this technique is effectively ***,variations in the fault incidence angles are also utilized to test the performance of the proposed *** perform the proposed algorithm,a IEEE-13 bus system is developed in MATLAB/Simulink *** algorithm effectively classified the faults with accuracy greater than 98%.The algorithm is also successfully validated on the IEEE-34 bus test ***,the algorithm was successfully validated on the practical power system *** is recognized that the developed method performed better than the discrete Wavelet transform(DWT)and ruled decision tree based protection scheme reported in various literature.

关键词： Fault classification fault recognition H-index VS-index

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Assessment of self-reacting bobbin tool friction stir welding for joining AZ31 magnesium alloy at inert gas environment

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Journal of Magnesium and Alloys 2019年第4期7卷 661-671页

作者： Prakash kumar Sahu Nikhil P Vasudevan bipul Das Sukhomay Pal Department of Mechanical Engineering and IDM Joint Lab Tsinghua UniversityBeijing 100084China Larsen and Toubro Limited HaziraSuratGujarat 394510India Department of Mechanical Engineering National Institute of Technology Silchar788010 AssamIndia Department of Mechanical Engineering Indian Institute of Technology Guwahati781039 AssamIndia

Research work presented in this study has the primary target of exploring joint attributes of AZ31 magnesium alloys using friction stir welding process with a modified tool referred as bobbin *** of inert and open atmosphere on mechanical properties are evaluated over a wide range of welding speed and tool rotation *** of the research findings from the inert atmosphere bobbin tool were made with the traditional process of friction stir *** results depicted improved joint properties for inert atmosphere *** and intermediate range of tool rotational speed is found to be favorable for bobbin tool friction stir welding without and with an inert medium,*** atmosphere due to inert medium leads to less oxidation of the AZ31 Mg alloy leading to superior joint *** investigations are also made with the aim of evaluating the impact of bobbin tool and inert medium on joint *** each aspect for joining of AZ31 Mg alloy,bobbin tool with inert medium is found to be an effective solution for joining with improved mechanical properties compared to without inert bobbin tool as well as conventional tool friction stir welding.

关键词： Mg FSW Bobbin tool Process parameters Mechanical properties Fractography Microstructural characterization

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Chemotherapy and drug resistance status of malaria parasite in northeast India

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Asian Pacific Journal of Tropical Medicine 2013年第7期6卷 583-588页

作者： Diganta Goswami Indra Baruah Sunil Dhiman bipul Rabha Vijay Veer Lokendra Singh Dhirendra kumar Sharma Division of Medical Entomology Defence Research LaboratoryTezpurAssam.India Directorate of Life Sciences DRDO HQNew DelhiIndia Department of Zoology Gauhati UniversityGuwahatiIndia

India reports the highest number of malaria cases in Southeast Asia,of which Plasmodium falciparum contribute more than half of the cases every *** eastern states of India contribute only 3.96%of country’s population but account for>10%of total reported malaria cases.11%of Plasmodium falciparum cases and 20%of malaria related deaths *** India,chloroquine resistance was reported for the first time from northeast region and since then chloroquine treatment failure is being reported from many parts of the *** chloroquine treatment failure has led to change of the drug policy to artemisinin combination therapy as first line of malaria treatment in the ***,replacing chloroquine to artemisinin combination therapy has not shown significant difference in the overall malaria incidence in the region,The present review addresses the current malaria situation of northeastern region of India in the light of antimalarials drug resistance.

关键词： Malaria Chemotherapy Antimalarials Drug resistance

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A model study on the stacking interaction of phenanthroline ligand with nucleic acid base pairs: An ab initio, MP2 and DFT studies

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Journal of Biophysical Chemistry 2011年第2期2卷 153-158页

作者： Pankaj Hazarika bipul Bezbaruah Pranjali Das Okhil kumar Medhi Chitrani Medhi Chemistry Department Gauhati University P.O Gauhati University Guwahati-781014 INDIA

The stacking of phenanthroline(phen) ligand within base pair sequences is one of the important factors for the stabilization of metalphen complex within DNA. The stacking ability of this ligand has been assessed to deduce the base pair selectivity as well as to identify the favored region of intercalation. Different level of theories have been used to predict the favorable regions for stacking interaction of phen ligand with base pair, but the results of MP2/6-31+G(d,p) is found to be reasonably good for monitoring such interactions.

关键词： Intercalation Stacking Interaction Phenanthroline Ligand Ab initio Basis set

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Preliminary Variations in Physiological Modules When <i>sub</i>1<i>A</i>QTL Is under Soil-Moisture Deficit Stress

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American Journal of Plant Sciences 2018年第4期9卷 732-744页

作者： Indraneel Saha Arnab kumar De Arijit Ghosh bipul Sarkar Narottam Dey Malay kumar Adak Department of Botany University of Kalyani Kalyani India Department of Biotechnology Visva-Bharati University Santiniketan India

The present investigation embodies with some distinct physiological responses of rice seedlings bearing sub1A allele when cultured under soil moisture deficit condition. In order to estimate the extent of variation of sub1A allele in cv. Swarna Sub1, few specific responses were recorded. Ongoing days (2, 4 and 8) of water stress, rice seedlings were mostly concerned with regulation of root growth through 1.24%, 4.10% and 8.96% as compared to control. When relative growth rate (RGR) of the biomass was considered, it recorded a significant down regulation maximum by 27.27% over non-stressed plants. The light absorbing capacity of foliages in terms of leaf mass ratio (15.62%) and specific leaf weight (8.45%) was also curtailed under stress contiguously with total dry matter accumulation. For light harnessing mechanism, the contributing pigments were most significantly (p ≤ 0.05) affected with maximum variation for chlorophyll (31.29%), lycopene (79.31%) and carotenoids (55.31%) over control. NAR was strikingly differed by 32.72% under water stress in average. To support the water stress related depletion of moisture tension, plants recorded RWC with a ranges of 6.62% to 21.57% under stress than control. In balance of cellular dehydration rice seedlings were recorded 6.72% loss of proline, but up-regulated the release of free amino acids by 1.35 fold. In expression of generic potential for sub1A allele, the growth inhibition even under water deficit was evident from carbohydrate depletion by 10.93%, 11.42% and 24.35% through days of treatments. This was supported by depletion of apoplastic and cellular invertase activities by 90.90% and 72.91%. The possibility for sub1A in tolerance of deficit water status in rice culture has been discussed in more details.

关键词： sub1A Rice Water Deficit Growth Metabolism

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