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Patil V.S.,University of Mumbai | Patil N.S.,Pratap College | Timol M.G.,Veer Narmad South Gujarat University
International Journal of Non-Linear Mechanics | Year: 2015

A similarity analysis of three-dimensional boundary layer equations of a class of non-Newtonian fluid in which the stress, an arbitrary function of rates of strain, is studied. It is shown that under any group of transformation, for an arbitrary stress function, not all non-Newtonian fluids possess a similarity solution for the flow past a wedge inclined at arbitrary angle except Ostwald-de-Waele power-law fluid. Further it is observed, for non-Newtonian fluids of any model only 90° of wedge flow leads to similarity solutions. Our results contain a correction to some flaws in Pakdemirli's [14] (1994) paper on similarity analysis of boundary layer equations of a class of non-Newtonian fluids. © 2014 Elsevier Ltd. All rights reserved.


Pawar S.,Pratap College | Patil D.A.,S S V P Ss L K Dr P R Ghogrey Science College
Indian Journal of Natural Products and Resources | Year: 2014

The ethnobotanical surveys were conducted during June 1997 to 2004 in Jalgaon district of Maharashtra. The tribes such as Bhil, Pawara, Tadvi and Vanjari inhabit in the district, apart from other rural people. Information on 37 angiospermic species belonging to 31 genera of 22 families was gathered on ethnomedicinal uses of barks. This paper reports their botanical identity, family, local names, parts used, preparations and doses, if any. It was observed that tribal people use barks of various trees in the form of decoction, infusion, extract, paste, poultice, powder, etc. Various human diseases treated were verified from the local tribal medicine men, elder ladies, head of hamlets and other rural informants. Further research on scientific line is, however, desirable to improvise their authenticity which would lead to discovery of new molecules and potential sources of drugs. © 2014 National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.


Heterocyclic base adducts of copper (II) complexes have been synthesized by the reaction of copper (II) chloride with 5-chloro-2-hydroxy acetophenone N(4) methyl thiosemicarbazone in presence of heterocyclic base like pyridine (py), 2, 2'-bipyridine (bipy), 1, 10-phenanthroline (Phen), α/β-picoline. Thiosemcarbazone has been characterized by 13C, 1H NMR as well as IR, electronic spectra. The magnetic and spectroscopic data indicate a square planner geometry for the four coordinate and a distorted square pyramidal for five coordinate complexes. The thiosemicarbazone and its copper (II) complexes show growth inhibitory activity against Pseudomonas Putida, Escherichia Coli, Aspergillus Niger and Candida Albicans. Thiosemicarbazone and its copper (II) complexes have been found antioxidant.


We have synthesized heterocyclic base adducts [pyridine (py), 2, 2'-bipyridine (bipy), 1, 10-phenanthroline (Phen), α/ß-picoline] of Nickel (II) complexes by the reaction of Nickel (II) chloride with 5-chloro-2-hydroxy acetophenone N(4) methyl thiosemicarbazone in presence of heterocyclic base. Ligand was characterized by 13C, 1H NMR as well as IR, electronic spectra. The synthesized adducts were characterized by IR, ESI-MS, UV-visible, magnetic measurement, molar conductivity, TGA and DSC. The magnetic and spectroscopic data indicate a square planner geometry for the four coordinate and a distorted square pyramidal for five coordinate complexes. The Nickel (II) bipy and Nickel (II) ß-pico adducts show higher antioxidant activity.


Patil T.K.,Arts And Com College | Saraf K.B.,Pratap College
Journal of Nano- and Electronic Physics | Year: 2011

In the present investigation, crystals of bismuth Tri Sulphide (Bi 2S 3) were grown by a simple gel technique using single diffusion method. The optimum growth conditions were established by varying various parameters such as pH of gel solution, gel concentration, gel setting time, concentration of reactant etc. Gel was prepared by mixing sodium meta silicate (Na 2SiO 35H 2O), glacial acetic acid (CH 3COOH) and supernant bismuth chloride (BiCl 3) at pH value 4.4 and transferred in glass tube of diameter 2.5 cm and 25 cm in length. The mouth of test tube was covered by cotton plug and kept it for the setting. After setting the gel, it was left for aging. After 13 days duration the second supernant H 2S water gas solution was poured over the set gel by using pipette then it was kept undisturbed. After 72 hours of pouring the second supernatant, the small nucleation growth was observed at below the interface of gel. The good quality Orthorhombic or Rhombus Bi 2S 3 crystals were grown in 31 days. These grown crystals were characterized by Magnetic Susceptibility, Electrical Conductivity, EDAX and SEM. © 2011 SumDU.

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