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Baviskar P.,North Maharashtra University | Chavan P.,University of Pune | Kalyankar N.,Yeshwant Mahavidyalaya | Sankapal B.,North Maharashtra University | Sankapal B.,Visvesvaraya National Institute of Technology
Applied Surface Science | Year: 2012

Simple and inexpensive solution chemistry is applied for decoration/formation CdS nanoparticles on multiwall carbon nanotubes (MWCNT's). Simple ion-by-ion mechanism is utilized for the deposition of CdS nanoparticles on MWCNT's. The size of the nanoparticles is controlled by tuning the preparative parameters which is most favorably based on ion-by-ion mechanism. The use of alkaline medium is completely avoided. Complete decoration of CdS nanoparticles on MWCNT's with cubic structure is observed by structural and surface morphological studies. The photoluminescence spectroscopy shows the two intense luminescence bands, i.e. blue and green, evidencing the presence of small size and agglomerated big size particles of CdS over MWCNT's (size-effect). The modification of MWCNT's with CdS presented in this study opens up new avenues in the design of optoelectronic and light-energy conversion devices. © 2012 Elsevier B.V. All rights reserved.

Baig M.M.V.,Yeshwant Mahavidyalaya
Saudi Journal of Biological Sciences | Year: 2014

Cell cultures of Psoralea corylifolia L. were established from the leaf disk derived callus. The effect of different biotic elicitors prepared from the fungal extract (. Aspergillus niger and Penicillium notatum), yeast extract and chitosan with different concentrations was studied. The increased synthesis of psoralen in 16-day old cell cultures under 16. h of light and 8. h of dark period was studied. Elicitation of psoralen in A. niger elicitor treated cells was found 9-fold higher over control cells. Treating the cells with P. notatum, yeast extract and chitosan elicitors lead to four to seven-fold higher psoralen accumulation over control cells. The extract of A. niger at 1.0% v/v increased the significant accumulation of psoralen (9850. μg/g DCW) in the cultured cells. Our study clearly shows that all the elicitors had the potential to increase the accumulation of psoralen but the A. niger elicitor at 1.0% v/v induced maximum accumulation. © 2014.

Tasneem S.,Yeshwant Mahavidyalaya
Nature Environment and Pollution Technology | Year: 2011

The fish population of aquatic systems plays a significant role in the economy, and India has vast potential for development of Inland fisheries. Barul earthen dam is a freshwater reservoir having catchment area of 1560 hectares has been constructed on Manar riverfordrinking, irrigation and pisciculture purposes. Literally there is no report on the fish fauna of Barul reservoir, hence to fill the gap, present work was undertaken. The reservoir was found to have a fauna of 24 fish species belonging to 11 Families and 4 different Orders.

Godavari is life line for people living on the bank of the river. Godavari river is termed as southern Ganges, which is the main source of drinking water for the people living on the bank of the river. The present investigation was undertaken to determine the pollution strength of industrial effluents in terms of temperature and dissolved oxygen, that will be required for aquatic biota to maintain aerobic condition. The water samples were collected over a period of two year monthly from February 2000 to January 2002. In the present study values of temperature were maximum in May is 38 °C and minimum in December is 23 °C and values of Dissolved Oxygen, were maximum 7.8 mg/L in winter and minimum 8.0 mg/L in summer. The values show that temperature and D.O. content are inversely proportional to each other. Copyright © EM International.

Patil A.T.,P.A. College | Patil S.D.,Yeshwant Mahavidyalaya | Shaikh K.A.,P.A. College
Journal of Liquid Chromatography and Related Technologies | Year: 2011

A sensitive stability indicating reverse phase high performance liquid chromatographic method was developed for the simultaneous determination of formoterol fumarate and ciclesonide in dry powder inhaler. The chromatographic separation was achieved on Hypersil BDS C 8 250×4.6mm, 5um column using a mobile phase consisting of 0.1% orthophospheric acid and acetonitrile in the ratio of 35:65 (v/v), at a flow rate of 2.0mLmin -1. The column compartment temperature was set at 40°C. The typical HPLC chromatograms were extracted at 214nm using photodiode array detector (PDA). The described method shows excellent linearity over a range of 3.6μgmL -1 to 1.1ngmL -1 for formoterol fumarate and 120μgmL -1 to 34ngmL -1 for ciclesonide. The correlation coefficient for formoterol fumarate and ciclesonide was 0.9998. The limit of detection and limit of quantification for formoterol fumarate was 0.33ngmL -1, 1.1ngmL -1 and for ciclesonide 10.2ngmL -1, 34ngmL -1, respectively. The proposed method was found to be very sensitive and accurate for the determination of Formoterol Fumarate and ciclesonide indry powder inhaler. Copyright © Taylor & Francis Group, LLC.

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