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Some Characterizations of Spaces with Weak Form of cs-Networks

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Journal of Mathematical research with Applications 2016年第3期36卷 369-378页

作者： v.rENUKADEvI B.prakash Department of Mathematics ANJA College (Autonomous)

In this paper, we introduce the concept of statistically sequentially quotient map:A mapping f : X → Y is statistically sequentially quotient map if whenever a convergent sequence S in Y, there is a convergent sequence L in X such that f(L) is statistically dense in S. Also, we discuss the relation between statistically sequentially quotient map and covering maps by characterizing statistically sequentially quotient map and we prove that every closed and statistically sequentially quotient image of a g-metrizable space is g-metrizable. Moreover,we discuss about the preservation of generalization of metric space in terms of weakbases and sn-networks by closed and statistically sequentially quotient map.

关键词： sequence covering sequentially quotient sn-network cs-network

Analysis of Power in an Argon Filled Pulsed Dielectric Barrier Discharge

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Plasma Science and Technology 2013年第7期15卷 635-639页

作者： U.N.PAL Pooja GULATI ram prakash Mahesh KUMAr v.SrIvASTAvA S.KONAr Microwave Tubes Division CSIR-Central Electronics Engineering Research Institute (CSIR-CEERI)Pilani Rajasthan-333031 India Birla Institute of Technology (BIT) Mesra Ranchi Jharkhand-835215 India

In this paper an argon filled coaxial dielectric barrier discharge （DBD） has been studied to understand the detail of power transfer from a unipolar square pulse to plasma during discharge. A dielectric barrier discharge based diffuse pulse discharge and its electrical charac-teristics are investigated. A quartz coaxial DBD tube filled at different pressures is used in the experiment. A unipolar pulse voltage of different peak voltages and frequencies has been applied to the discharge electrodes for the generation of microdischarges. Two current pulses are used for two consecutive discharges per applied voltage pulse. The second discharge, which occurs at the falling flank of the voltage pulse, is induced by the charges stored on the dielectric barrier during the first discharge. It has been deduced that the power supplied to ignite the first discharge is partly stored to ignite the second discharge when the applied voltage decays. This process ul- timately leads to much improved power transfer to the plasma. The knowledge obtained from dynamic processes of the DBDs in the discharge gap explains quantitatively the mechanism of ignition, development and extinction of the DBDs.

关键词： DBD non-equilibrium plasma non-thermal plasma diffuse pulse discharge,microdischarges

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Power Quality Improvement of Distribution Network Using BESS and Capacitor Bank

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Journal of Modern Power Systems and Clean Energy 2021年第3期9卷 625-632页

作者： F.r.Islam A.Lallu K.A.Mamun K.prakash N.K.roy University of Sunshine Coast Sip-py DownsAustralia University of South Pacific SuvaFiji KJiulna University of Engineering and Technology KhulnaBangladesh

The power demand around the world is increasing *** aging distribution network architectures are used by the existing utility companies to deliver power to the consumers,which significantly affects the reliability,stability and quality of the delivered *** techniques such as compensation devices have been used by power system engineers and researchers to maintain the quality of power transmitted to end *** this paper,wattage and volt-amp reactive(vAr)planning scheme has been proposed by using the combination of battery energy storage systems(BESS)and compensators to deal with the vulnerability of networks to voltage drop and system *** cost-effective combination of BESS and shunt capacitor bank will then be analyzed to indicate the benefit of the proposed scheme.

关键词： Battery energy storage system(BESS) shunt capacitor bank reliability stability quality volt-amp reactive(vAr)planning distribution network

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Free radical scavenging property and antiproliferative activity of rhodiola imbricata Edgew extracts in HT-29 human colon cancer cells

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Asian Pacific Journal of Tropical Medicine 2013年第1期6卷 11-19页

作者： ravichandran Senthilkumar Thangaraj Parimelazhagan Om prakash Chaurasia r.B.Srivastava Bioprospecting Laboratory Department of BotanySchool of Life SciencesBharaihiar University.Coimbatore-641046Tamil NaduIndia DIHAr Defence Research Development OrganizationLeh-LadakhJammu and KashmirIndia Directorate of Life Sciences.DrDO Head Quarters New Delhi-110011India

Objective:To investigate the in vitro antioxidant and antiproliferative activity of rhizome extracts of rhodiola imbricata(***) in HT-29 human colon cancer cell ***:The successively extracted rhizome of *** using various solvents was analyzed for their total phenolics,tannins and flavonoid *** vitro antioxidant activity was evaluated by employing different assays,including DPPH,ABTS radical scavenging assays,FrAP, phosphomolybdenum reduction assay,superoxide anion,hydroxyl radical scavenging activities and metal chelating ***:Acetone and methanol extracts recorded higher phenolic content and showed comparable antioxidant activity with standard ***,they also inhibited the proliferation of HT-29 cells upon treatment at higher concentration(200μg/mL) (acetone and methanol,84%and 84%.respectively).On examination acetone extract exhibited antiproliferative activity in a concentration dependent manner whereas,methanol extract showed both dose dependent and lime dependent inhibitory ***:The results obtained justify the traditional usage of *** from their promising antioxidant activity.

关键词： rhodiola imbricata Antioxidant activity Phenolics Flavonoids Adenocarcinoma cell lines

A review on ethnobotany,phytochemistry and pharmacology of Fumaria indica(Fumitory)

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Asian Pacific Journal of Tropical Biomedicine 2012年第8期2卷 665-669页

作者： prakash Chandra Gupta Nisha Sharma Ch v rao University Institute of Pharmacy Chhatrapati Shahu Ji Maharaj University National Botanical research Institute

Fumaria indica(Hausskn.) Pugsley(Fumariaceae),known as "Fumitory",is an annual herb found as a common weed all over the plains of India and *** whole plant is widely used in traditional and folkloric systems of *** traditional systems of medicine,the plant is reputed for its anthelmintic,diuretic,diaphoretic,laxative,cholagoguc,stomachic and sedative activities and is used to purify blood and in liver obstruction in ethnopharmacology. The whole plant is ascribed to possess medicinal virtues in Ayurvedic and Unani systems of medicine and is also used in preparation of important Ayurvedic medicinal preparations and polyhedral liver *** review reveals that phytochemical constituents of wide range have been separated from the plants and it possesses important pharmacological activities like smooth muscle relaxant,spasmogenic and spasmolytic,analgesic,anti-inflammatory, neuropharmacological and antibacterial *** separation of hepatoprotective and antifungal constituents from this plant was also reported *** review highlights the traditional,ethnobotanical,phytochemical,pharmacological information available on Fumaria indica,which might be helpful for scientists and researchers to find out new chemical entities responsible for its claimed traditional uses.

关键词： Fumaria indica Phytochemistry Protopine Hepatoprotective

Pharmacognostic studies of the leaves and stem of Careya arborea roxb.

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Asian Pacific Journal of Tropical Biomedicine 2012年第5期2卷 404-408页

作者： prakash Chandra Gupta Nisha Sharma Ch v rao University Institute of Pharmacy Chhtrapati Shahu Ji Maharaj University Pharmacognosy and Ethnopharmacology Division National Botanical Research Institute

Objective:To study detailed pharmacognostic profile of leaves and stem of Careya arborea(C. arborea) roxb.(Lecthyidaceae),an important medicinal plant in the Indian system of medicine. Methods:Leaf and stem samples of *** were studied by macroscopical,microscopical, physicochemical,phytochemical,fluorescence analysis of powder of the plant and other methods for standardization recommended by ***:Maeroscopieally,the leaves are simple, broadly obovate in shape,acuminate apex with crenate,dentate margin,petioles(0.1-1.8 cm) long. Microscopically,the leaf showed the presence of median large size vascular bundle covered with fibrous bundle sheath,arrangement of xylem in cup shape and presence of cortical vascular bundle, patches of sclerenchyma,phloem fibers in groups and brown pigment containing cells in stem are some of the diagnostic features noted from anatomical *** microscopy of leaf revealed the presence of parenchyma cells,xylem with pitted vessels and epidermis with anisocylic *** investigations also included leaf surface data;quantitative leaf microscopy and fluorescence analysis. Physiochemical parameters such as loss on drying,swelling index,extractive values and ash values were also determined and results showed that total ash of the stem bark was about two times higher than leaf and water soluble extractive value of leaf and stem bark was two limes higher than alcohol soluble extractive *** phytochemical screening showed the presence of triterpenoids, saponins,tannins and ***:The results of the study can serve as a valuable source of information and provide suitable standards for identification of this plant material in future investigations and applications.

关键词： Careya arborea Microscopy Macroscopy Pharmacognosy Stomata Xylem Phloem Physicochemical

3D radiative convective flow of ZnO-SAE50nano-lubricant in presence of varying magnetic field and heterogeneous reactions

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Propulsion and Power research 2019年第4期8卷 339-350页

作者： M.K.Nayak J.prakash D.Tripathi v.S.Pandey Department of Physics IHSESiksha"O"Anusandhan Deemed to be UniversityBhubaneswar751003OdishaIndia Department of Mathematics Avvaiyar Government College for WomenKaraikal609602Puducherry-U.T.India Department of Mathematics National Institute of TechnologyUttarakhand246174India Department of Physics National Institute of Technology DelhiNew DelhiIndia

A numerical simulation is presented to investigate the effect of an exponentially varying magnetic field on three dimensional flow of Zinc Oxide-Society of Automotive Engineers 50 nanolubricant(ZnO-SAE50nano-lubricant)past a stretching *** the impact of homogenous and heterogeneous reactions on the flow of nanolubricant concerned has also taken into *** study has been strengthened by introducing the convection mechanism and the effect of thermal *** transformations are employed to transform the set of partial governing equations into the set of ordinary differential *** suitable boundary conditions are used to obtain the numerical *** numerical results are simulated using Matlab bvp4c solver and validated with the existing *** flow characteristics,thermal characteristics,nanoparticle concentration and some non-dimensional numbers are computed under the influence of the pertinent *** valuable outcome of the current study is that augmented magnetic field strength is the root cause of diminishing axial as well as transverse velocities and growing trend of fluid ***,the coeffi-cients of homogenous and heterogeneous reactions are boons for ascending concentration boundary layer.

关键词： MHD 3D flow ZnO-SAE50nanolubricant Exponential stretching sheet Convective heating mechanism Thermal radiation Heat generation/absorption

Shielding measures of power transformer to mitigate stray loss and hot spot through coupled 3D FEA

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High voltage 2017年第4期2卷 267-273页

作者： Sujana Dasara vineet prakash Mishra Department of Electrical&Electronics Engineering Jawaharlal Nehru Technological UniversityKukatpallyHyderabadIndia High voltage Engineering Department Bharat Heavy Electricals Limited(BHEL)R&DVikas NagarHyderabadIndia

Leakage flux generated in the power transformers cause stray losses in metallic parts of the *** losses largely affect the transformer hot spot which leads to thermal *** is necessary to mitigate the impact of leakage flux on metallic parts by employing magnetic shunts and eddy current *** clamping structures like flitch plate and end frames experience substantial losses,hence combinations of shielding can be used for better loss *** this study,a case study is performed on a 315 MvA,420/27 kv single-phase generator power *** work is based on coupled three-dimensional(3D)finite-element analysis(FEA)of the transformer model.A new type of magnetic shunt is explored;also different design combinations of shielding are specified in this work for efficient mitigation of hot spots as well as tank walls.

关键词： power walls hence

First time-resolved CCD photometry and time-series analysis of NSv 13601

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research in Astronomy and Astrophysics 2020年第3期20卷 142-149页

作者： virabhadrasinh A.Gohil Sachchidanand prakash Bhatnagar Department of Physics M.K.Bhavnagar UniversityBhavnagar-364001GujaratIndia

We present the first results of a time-resolved CCD photometric and time-series analysis of NSv 13601,a variable star in the constellation *** 14′′Schmidt-Cassegrain telescope of Maharaja Krishnakumarsinhji Bhavnagar University(MKBU)was used for *** was performed both in vStar and Period04 software,and their results were *** main results are as follows:From data analysis,its has period^77.784 d(MKBU data v)(vStar),~77.632 d(MKBU data Ic)(vStar),~77.058 d(MKBU data v)(Period04)and^49.560 d(MKBU data Ic)(Period04).Its v and I mean magnitudes for MKBU data are 12.203(v)and 11.292(I)mag *** confirm it to be a variable star.

关键词： Stars individual NSv 13601-stars oscillations-techniques photometric

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