Sūrat, India
Sūrat, India
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In this work, ternary Chalcogenide Cu3BiS3(CBS) thin films have been prepared and modified by using spin coating technique. Lucratively, spin coating technique is easy going and simple though it hasn't given an enclosure and extensive focus of researches for Cu3BiS3 thin films formation. The surface smoothness and the homogeneity of the obtained thin films have been optimized throughout varying the annealing temperature, concentration and rotation speed. It had been found that as prepared films the value of the energy band gap is 1.4 eV, the absorption coefficient 105 cm-1. Each values of the EBG (Energy Band Gap) and AC (Absorption coefficient) was found in quite agreement with the published work of CBS thin film formation by other methods as CBD, dip coating etc. It signifies that Cu3BiS3 films can be used as an absorber layer for thin film solar cell. © 2017 Author(s).

Patel P.,VNSGU | Patel S.V.,VNSGU
Advances in Intelligent Systems and Computing | Year: 2016

Volume of digitized Information is growing drastically on web, digital libraries and other archives. Demand for searching a relevant document or data of specific time period over large amount of data has also increased. Therefore, Time dimension has its own importance in any information domain. Despite of the importance of temporal data available in the document, current search engines and searching techniques provide limited search facilities using date of timestamp or document publication date. Existing retrieval models do not take advantage of temporal expressions embedded into a document. This paper describes our framework to exploit temporal expressions in documents in order to add value to the existing information retrieval systems by providing searches like “before elections 2014,” “after Diwali,” etc., and retrieve relevant documents satisfying temporal expression search criteria. © Springer Science+Business Media Singapore 2016.

Patel P.,VNSGU | Patel S.V.,VNSGU
Advances in Intelligent Systems and Computing | Year: 2016

In today’s era, a large amount of digitized information is generated every day. Retrieving information about a specific time period is one of the demands of information retrieval system. Such time-related information can be helpful to add time dimensions in existing information processing and information retrieval systems. In this paper, we represent INDTime, a rule-based system that is aimed to recognize and normalize temporal expressions present within the text document. It is designed to automatically annotate temporal expressions as per TIMEX3 annotation standard. The system has been evaluated on three datasets, one of them is WIKIWAR dataset and the other two are manually annotated datasets. We achieved an average precision of 94.15%, recall of 92.55%, and f-measure of 91.37% on three datasets for recognizing temporal expressions and average precision of 90.95%, recall of 92.55%, and f-measure of 91.37% for normalization. © Springer Science+Business Media Singapore 2016.

Zaveri T.,VNSGU | Bhavesh B.,ADIT | Zaveri N.,C.K.P.C.E.T
2011 IEEE International Electric Machines and Drives Conference, IEMDC 2011 | Year: 2011

Distribution Static Compensator (DSTATCOM) is a custom power device used for power quality improvement in distribution system. The control techniques applied to the DSTATCOM play a major role in its performance. This paper presents comparative study of the reference current generation techniques using voltage source converter based DSTATCOM for reactive power compensation, source current balancing and harmonic mitigation in delta connected load. Different control techniques such as Instantaneous reactive power theory, Synchronous reference Frame theory and Symmetrical component theory have been used in this paper. Reference currents generated by control techniques have been tracked by the compensator in a hysteresis band control scheme. Dynamic simulation of the DSTATCOM for different control strategies has been carried out in MATLAB/Simpower system environment. Simulation results demonstrate the performance and feasibility of various control techniques for DSTACOM. © 2011 IEEE.

Prajapati J.S.,Polytechnic College | Tandel P.V.,V.N.S.G.U | Bhathawala P.H.,V.N.S.G.U
International Journal of Engineering and Technology Innovation | Year: 2016

In this paper well known phenomenon of fingering (Instabilities) has been discussed which occurs in two immiscible phase flow through homogeneous porous media. The flow of two immiscible fluids in a large medium can be investigated fairly simply if it is unidirectional, in other words if the different values such as pressures, saturations, fluid speeds, etc. vary only in a single space direction corresponding to the movement direction.

Patel K.M.,V.N.S.G.U. | Patel K.P.,V.N.S.G.U.
Journal of Industrial Pollution Control | Year: 2010

The experiment was carried out to the study of cytological change in Trigonella foenum-graecum under the zinc stress. Different kinds of chromosomal abnormalities like chromosome bridge, laggard chromosome, micronuclei, vagrant chromosome, C-mitosis etc. were observed during cytological studies. The mitotic index decreased and percentage of aberrant cells increase as concentrations of zinc increases. © EM International.

Dubey M.,VNSGU | Tiwari A.K.,India Barkhatullah University | Manoher S.,India Barkhatullah University | Ujjania N.C.,VNSGU
Ecology, Environment and Conservation | Year: 2014

In the present paper plankton diversity in Kaliasote Reservoir is described. This small sized perianal water body is situated 23°11'50"N latitude and 77°24' 30" E longitudes which is 12 km away from Bhopal (Madhya Parades). The water samples were collected during the June 2006 to November 2006 from 5 preselected sampling stations for the quantitative and qualitative estimation of phytoplankton and zooplankton. Result were depicted that among the phytoplankton, Chlorophyceae 39% (200-4850 cell/1) was dominated group followed by Cyanophyceae 32% (290-4600 cell/1) and Bacillariophyceae 29% (200-4000 cell/1) while among the zooplankton, Cladocera 36% (60-450 org/1) was dominated group followed Protozoa 35% (60-400 org/1) and Rotifers 29% (67-370 org/1). The result indicates the abundance of planktons (phytoplankton and zooplankton) and high level of primary energy which is subjected to sustainably development of reservoir utility. © EM International.

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