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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

Synergism of co-delivered nanosized antioxidants displayed enhanced anticancer efficacy in human colon cancer cell lines

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Bioactive Materials 2017年第2期2卷 82-95页

作者： Lipika Ray Manish kumar Pal ratan Singh Ray CSIR-Indian Institute of Toxicology Research P.O.Box No.80M.G.MargLucknowUP226001India Academy of Scientific and Innovative Research New Delhi 110001India

Combination of chemopreventive and/or therapeutic agents is the imminent smart approach to cope upwith cancer because it may act on multiple targets through different pathways. In the present study, wehave synthesized multiple chemopreventive and/or therapeutic agents (Curcumin, Quercetin andAspirin) loaded nanoparticles by simple cation-anion interaction among the amine groups of chitosan(CS) and phosphate groups of sodium hexametaphosphate (SHMP). These nanosized bioactive materials(CS-SHMP-CQA-NPs) were well characterized and found most effective in colon cancer cell line (HCT-116)compared to other cancer cell lines. Triplex chemopreventive and/or therapeutic agents-loaded NPs weresynergistically inducing apoptosis in HCT-116 cells compared to two-chemopreventive agents-loadedNPs as evident by an increase in sub-G1 cells (percent), and chromatin condensation along with thedecrease in mitochondrial membrane potential (MMP). Interestingly, ChoueTalalay analysis revealedthat CS-SHMP-CQA-NPs showed strong synergistic effect in its all doses. Thus, our study demonstratesthat nanoparticles based bioactive materials significantly inhibit the growth of HCT-116 cells and thuscould be a promising approach for colon cancer chemoprevention.

关键词： Chemoprevention Therapeutic agent Colon cancer Synergistic effect Apoptosis

Saline-Alkali Tolerance in Rice: Physiological Response, Molecular Mechanism, and QTL Identification and Application to Breeding

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Rice science 2022年第5期29卷 412-434页

作者： ratan kumar GANAPATI Shahzad Amir NAVEED Sundus ZAFAR WANG Wensheng XU Jianlong Institute of Crop Sciences National Key Facility for Crop Gene Resources and Genetic ImprovementChinese Academy of Agricultural SciencesBeijing 100081China Shenzhen Branch Guangdong Laboratory for Lingnan Modern AgricultureAgricultural Genomics Institute at ShenzhenChinese Academy of Agricultural SciencesShenzhen 518120China

Salinity-alkalinity is incipient abiotic stress that impairs plant growth and ***(Oryza sativa)is a major food crop greatly affected by soil salinity and alkalinity,requiring tolerant varieties in the saline-alkali prone *** the molecular and physiological mechanisms of saline-alkali tolerance paves the base for improving saline-alkali tolerance in rice and leads to progress in *** review illustrated the physiological consequences,and molecular mechanisms especially signaling and function of regulating genes for saline-alkali tolerance in rice *** also discussed QTLs regarding saline-alkali tolerance accordingly and ways of deployment for *** efforts are needed to identify and utilize the identified QTLs for saline-alkali tolerance in rice.

关键词： saline-alkali tolerance physiological mechanism molecular mechanism marker-assisted backcrossing rice

Investigation on the Trap Signature in Organic Semiconductor Turmeric Film Through Current-Voltage Analysis

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Transactions of Tianjin University 2020年第4期26卷 265-272页

作者： Kushal Chakraborty Aloke kumar Das ratan Mandal Dulal Krishna Mandal Department of Physics Jadavpur UniversityKolkata 700032India School of Energy Studies Jadavpur UniversityKolkata 700032India Department of Mechanical Engineering Jadavpur UniversityKolkata 700032India

The analytical description of the trap signature in the charge conduction process of turmeric dye-based organic semiconductor has been presented in this *** analytical explanation of the built-in potential Ⅴx-Ⅴ graph that emphasizes the presence of trapping states has been *** analysis of current-voltage(Ⅰ-Ⅴ)characteristics has also been conducted to verify the trap signature of the carrier in the *** non-monotonous decrement of the G(Ⅴ)-Ⅴ plot verifies the trap *** values of trap energy(Et)and trap factor(θ)have been derived from the logarithmic Ⅰ-Ⅴ *** the analysis of the semilogarithmic Ⅰ-Ⅴ plot,the barrier height(ϕbi)of the device has also been *** overallⅠ-Ⅴcurve has been taken into account to examine the Richardson-Schottky and Poole-Frenkel effects on the trap-assisted charge conduction *** the results of the experiment,the Schottky effect has been observed to be effective,which leads to a bulk-limited charge conduction process.

关键词： Organic semiconductor Trap energy Trap factor Turmeric Schottky effect

Pressure-Induced Instability Characteristics of a Transient Flow and Energy Distribution through a Loosely Bent Square Duct

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Energy Engineering 2022年第1期119卷 429-451页

作者： Sreedham Chandra Adhikari ratan kumar Chanda Sidhartha Bhowmick Rabindra Nath Mondal Suvash Chandra Saha Department of Mathematics Jagannath UniversityDhaka1100Bangladesh School of Mechanical and Mechatronic Engineering University of Technology SydneyNew South WalesAustralia

Due to widespread applications of the bent ducts in engineering fields such as in chemical,mechanical,bio-mechanical and bio-medical engineering,scientists have paid considerable attention to invent new characteristics of fluid flow in a bent duct(BD).In the ongoing study,a spectral-based numerical technique is applied to explore flow characteristics and energy distribution through a loosely bent square duct(BSD)of small *** is accelerated due to combined action of the non-dimensional parameters;the Grashof number Gr(=1000),the curvatureδ(=0.001),and the Prandtl number Pr(=7.0)over a wide domain of the Dean number 0

关键词： Square-shaped duct curvature secondary flow energy distribution chaos

Optical Character Recognition for printed Tamil text using Unicode

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2005年第11期6卷 1297-1305页

作者： SEETHALAKSHMI R. SREERANJANI T.R. BALACHANDAR T. Abnikant Singh Markandey Singh Ritwaj ratan Sarvesh kumar Shanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu IndiaShanmugha Arts Science Technology and Research Academy Thirumalaisamudram Thanjavur Tamil Nadu India

Optical Character Recognition (OCR) refers to the process of converting printed Tamil text documents into software translated Unicode Tamil Text. The printed documents available in the form of books, papers, magazines, etc. are scanned using standard scanners which produce an image of the scanned document. As part of the preprocessing phase the image file is checked for skewing. If the image is skewed, it is corrected by a simple rotation technique in the appropriate direction. Then the image is passed through a noise elimination phase and is binarized. The preprocessed image is segmented using an algorithm which de- composes the scanned text into paragraphs using special space detection technique and then the paragraphs into lines using vertical histograms, and lines into words using horizontal histograms, and words into character image glyphs using horizontal histograms. Each image glyph is comprised of 32×32 pixels. Thus a database of character image glyphs is created out of the segmentation phase. Then all the image glyphs are considered for recognition using Unicode mapping. Each image glyph is passed through various routines which extract the features of the glyph. The various features that are considered for classification are the character height, character width, the number of horizontal lines (long and short), the number of vertical lines (long and short), the hori- zontally oriented curves, the vertically oriented curves, the number of circles, number of slope lines, image centroid and special dots. The glyphs are now set ready for classification based on these features. The extracted features are passed to a Support Vector Machine (SVM) where the characters are classified by Supervised Learning Algorithm. These classes are mapped onto Unicode for recognition. Then the text is reconstructed using Unicode fonts.

关键词：光学性质识别支撑向量人工神经网络编码系统软件翻译

Integrative assessment of biomarker responses in teleostean fishes exposed to glyphosate-based herbicide(Excel Mera 71)

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Emerging Contaminants 2016年第4期2卷 191-203页

作者： Sukhendu Dey Palas Samanta Sandipan Pal Aloke kumar Mukherjee Debraj Kole Apurba ratan Ghosh Ecotoxicology Lab Department of Environmental ScienceThe University of BurdwanGolapbagBurdwan 713104West BengalIndia Division of Environmental Science and Ecological Engineering Korea UniversityAnam-dongSungbuk-guSeoul 02841Republic of Korea Department of Environmental Science Aghorekamini Prakashchandra MahavidyalayaSubhasnagarBengaiHooghly 712611West BengalIndia P.G.Department of Conservation Biology Durgapur Govt.CollegeDurgapur 713214West BengalIndia

Present study deals with the effects of glyphosate-based herbicide,Excel Mera 71 on Anabas testudineus,Heteropnestes fossilis and Oreochromis niloticus in field conditions(1.85 kg/ha)based on anti-oxidative,metabolic and digestive *** this study following biomarkers viz.,acetylcholinesterase(AChE),lipid peroxidation(LPO),catalase(CAT),glutathione-S-transferase(GST),alkaline phosphatase(ALP),aspartate aminotransferase(AST),alanine aminotransferase(ALT),amylase,lipase and protease were investigated in gill,stomach,intestine,liver,kidney,brain,muscle and spinal cord of the concerned fish *** activities were significantly altered by glyphosate exposure after 30 days,these activities were tissue as well as species *** results suggested that these biomarkers could be used to assess the ecological risks of glyphosate on *** factor(BAF)studied in different aquatic natural macrophytes showed order of Alternanthera philoxeroides>Azolla pinnata>Lemna sp.(Minor)>Lemna sp.(Major)>Pistia stratiotes,while transfer factor(TF)showed the order of Pistia stratiotes>Alternanthera philoxeroides>Lemna *** factor(BCF)study showed maximum accumulation of glyphosate in liver,kidney or intestine,and minimum either in bone or stomach irrespective of fish *** integrated biomarker response(IBR),which uses a battery of biomarkers to calculate the standardized scores for each biomarker responses ranging from physiological to biochemical/molecular responses,was evaluated by combining the multiple biomarkers into a single value to evaluate quantitatively the toxicological effects of *** general,the multiple indices exhibited variations and *** was more affected than other fish species;maximum IBR value was observed for LPO and minimum in case of *** order of integrated biomarkers caused by glyphosate treatment was recorded as follows:LPO>Amylase>CAT>AST>Protease>Lipase>ALP>GST>AChE>ALT for ***,LP

关键词： Excel Mera 71 Biomarker Bioaccumulation factor(BAF) Bioconcentration factor(BCF) Transfer factor(TF) Integrated biomarker response(IBR)

pharmacognostical study and establishment of quality parameters of aerial parts of Costus speciosus-a well known tropical folklore medicine

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Asian Pacific Journal of Tropical Biomedicine 2014年第6期4卷 486-491页

作者： Pradeep Singh ratan Lal Khosa Shruti Srivastava Garima Mishra Keshri Kishor Jha Sourabh Srivastava Sangeeta Ramesh kumar Verma Mohd Adil Tahseen Department of Pharmacognosy Teerthanker Mahaveer College of PharmacyTeerthanker Mahaveer University Department of Pharmacy Bharat Institute of TechnologyPartapur BypassDelhi Road MeerutUttar PradeshIndia

Objective:To evaluate the diagnostic pharmacognostical characters of Costus speciosus(aerial parts)along with their physico-chemical parameters and fluorosence ***:The pharmacognostical characters were determined in terms of macroscopy,microscopy,powder microscopy,leaf constant,fluorescence analysis and preliminary phytochemical ***:The findings of macroscopy revealed that leaves elliptic to oblong or oblong-lancoelate,thick,spirally arranged,with stem clasping sheaths up to 4 cm,flowers large,white,conelike terminal spikes,with bright red *** section of leaflet showed the presence of cuticularised epidermis with polygonal cells on adaxial surface and bluntly angled cells on abaxial surface of lamina,mesophyll cells differentiated in to single layered palisade cells on each surface and 2-3 layered spongy parenchyma,unicellular and uniseriate multicellular covering trichomes,paracytic stomata and vascular bundles surrounded by sclerenchymatous multicellular *** phytochemical screening exhibited the presence of various phytochemical groups like alkaloids,glycosides,steroids,phenolic ***,the leaf constants,powder microscopy and fluorescence characteristics indicated outstanding results from this investigation Conclusions:Various pharmacognostical and physico-chemical parameters have pivotal roles in identification,authentication and establishment of quality parameters of the species.

关键词： Costus speciosus Quality control Physico-chemical parameters Microscopy Fluorescence analysis

Face Recognition Using LDA with Wavelet Transform Approach

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Computer Technology and Application 2011年第5期2卷 401-405页

作者： Neeta Nain Akshay kumar Amlesh kumar Mohapatra Ashok kumar ratan Das Nemi Chand Singh Department of Computer Engineering Malaviya National Institute of Technology Jaipur 302017 India Government Engineering College Jhalawar India

Linear Discriminant Analysis （LDA） is one of the principal techniques used in face recognition systems. LDA is well-known scheme for feature extraction and dimension reduction. It provides improved performance over the standard Principal Component Analysis （PCA） method of face recognition by introducing the concept of classes and distance between classes. This paper provides an overview of PCA, the various variants of LDA and their basic drawbacks. The paper also has proposed a development over classical LDA, i.e., LDA using wavelets transform approach that enhances performance as regards accuracy and time complexity. Experiments on ORL face database clearly demonstrate this and the graphical comparison of the algorithms clearly showcases the improved recognition rate in case of the proposed algorithm.

关键词： Face recognition principal component analysis (PCA) linear discriminant analysis (LDA) relevance weighted LDA (RW-LDA) LDA/QR wavelet transform sub-bands.