Science and Commerce College

Chikhaldara, India

Science and Commerce College

Chikhaldara, India
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Kadam R.H.,Materials Research Laboratory | Birajdar A.P.,Materials Research Laboratory | Alone S.T.,Science and Commerce College | Shirsath S.E.,Shinshu University
Journal of Magnetism and Magnetic Materials | Year: 2013

Co0.5Ni0.5CrxFe2-xO4 nanoparticles have been designed by the sol-gel auto combustion method, using nitrates of the respective metal ions, and citric acid as the starting materials. The process takes only a few minutes to obtain as-received Cr-substituted Co-Ni ferrite powders. X-ray diffraction (XRD), vibrational sample magnetometer (VSM), transmission electron microscopy (TEM) are utilized in order to study the effect of variation in the Cr3+ substitution and its impact on particle size, lattice constant, specific surface area, cation distribution and magnetic properties. Lattice parameter, particle size found to decrease with increasing Cr3+ content, whereas specific surface area showed increasing trend with the Cr3+ substitution. Cation distribution indicates that the Cr, Co and Ni ions show preference toward octahedral [B] site, whereas Fe occupies both tetrahedral (A) and octahedral [B] sites. Saturation magnetization (MS) decreased from 65.1 to 40.6 emu/g with the increase in Cr3+ substitution. However, Coercivity increased from 198 to 365 Oe with the Cr3+ substitution. © 2012 Elsevier B.V.

Pardeshi R.,Science and Commerce College | Chaudhuri B.B.,Indian Statistical Institute | Hangarge M.,Science and Commerce College | Santosh K.C.,U.S. National Institutes of Health
Proceedings of International Conference on Frontiers in Handwriting Recognition, ICFHR | Year: 2014

Since OCR engines are usually script-dependent, automatic text recognition in multi-script document requires a pre-processor module that identifies the scripts. Based on this motivation, in this paper, we present a word level handwritten Indian script identification technique. To handle this, words are first segmented by morphological dilation and performed connected component labelling. We then employ the Radon transform, discrete wavelet transform, statistical filters and discrete cosine transform to extract the directional multi-resolution spatial features. We tested the features by using linear discriminant analysis, support vector machine and K-nearest neighbour classifiers over 11 different major Indian scripts (including Roman) in bi-script and tri-script scenario. In our tests, we have achieved maximum accuracies of 98% and 96% for bi-script and tri-scipt respectively. © 2014 IEEE.

Pande P.S.,Science And Commerce College
Der Pharma Chemica | Year: 2013

Polar flavanoids and non polar flavanoids have been isolated from the leaves of Ocimum tenuiflorum by chemical method. The isolated extract was screened for antimicrobial activities against Proteus vulgaris, Staphylococcus aureus, Escherichia coli and Salmonella typhi. The extracts showed good to moderate activity against the pathogens.

Murade P.A.,Rdik And Kd College | Sangawar V.S.,Government Vidarbha Institute of Science and Humanities | Chaudhari G.N.,Nano Technology Research Laboratory | Kapse V.D.,Science and Commerce College | Bajpeyee A.U.,Commerce and Science College
Current Applied Physics | Year: 2011

Nanocrystalline La1-xSrxFeO3 (x = 0, 0.1, 0.2, 0.3 and 0.4) was prepared by sol-gel citrate method. The structural and microstructural characterization has been carried out with the help of X-ray diffraction (XRD) and transmission electron microscopy (TEM), respectively. XRD studies confirm the formation of LaFeO3 with perovskite phase. Further studies by Fourier transform infrared spectroscopy were also conducted. DC electrical properties of the prepared nanoparticles were studied by D.C. conductivity measurements. The gas-sensing performance of the as-prepared La1-xSrxFeO3 nanoparticles was investigated towards different reducing gases like acetone (CH3COCH3), ethanol (C2H5OH), hydrogen sulfide (H2S), hydrogen (H2) and liquefied petroleum gas (LPG). The nanocrystalline La0.7Sr0.3FeO3 exhibited good sensing performance towards acetone gas with rapid response and high sensitivity at 275 °C as compared with LaFeO3. © 2010 Elsevier B.V. All rights reserved.

Surface water samples were collected from substations along Sheva creek and Dharamtar creek mangrove ecosystems of Uran (Raigad), Navi Mumbai, west coast of India. Water samples were collected fortnightly from April 2009 to March 2011 during spring low and high tides and were analyzed for pH, Temperature, Turbidity, Total solids (TS), Total dissolved solids (TDS), Total suspended solids (TSS), Dissolved oxygen (DO), Biochemical oxygen demand (BOD), Carbon dioxide (CO2), Chemical oxygen demand (COD), Salinity, Orthophosphate (O-PO4), Nitrite-nitrogen (NO2-N), Nitrate-nitrogen (NO3-N), and Silicates. Variables like pH, turbidity, TDS, salinity, DO, and BOD show seasonal variations. Higher content of O-PO4, NO3-N, and silicates is recorded due to discharge of domestic wastes and sewage, effluents from industries, oil tanking depots and also from maritime activities of Jawaharlal Nehru Port Trust (JNPT), hectic activities of Container Freight Stations (CFS), and other port wastes. This study reveals that water quality from mangrove ecosystems of Uran is deteriorating due to industrial pollution and that mangrove from Uran is facing the threat due to anthropogenic stress. © 2013 Elsevier Ltd.

Hangarge M.,Science and Commerce College | Santosh K.C.,University of Lorraine | Pardeshi R.,Science and Commerce College
Proceedings of the International Conference on Document Analysis and Recognition, ICDAR | Year: 2013

This paper presents directional discrete cosine transform (D-DCT) based word level handwritten script identification. The conventional discrete cosine transform (DCT)emphasizes vertical and horizontal energies of an image and de-emphasizes directional edge information, which of course plays a significant role in shape analysis problem, in particular. Conventional DCT however, is not efficient in characterizing the images where directional edges are dominant. In this paper, we investigate two different methods to capture directional edge information, one by performing 1D-DCT along left and right diagonals of an image, and another by decomposing 2D-DCT coefficients in left and right diagonals. The mean and standard deviations of left and right diagonals of DCT coefficients are computed and are used for the classification of words using linear discriminant analysis (LDA) and K-nearest neighbour (K-NN). We validate the method over 9000 words belonging to six different scripts. The classification of words is performed at bi-scripts, triscripts and multi-scripts scenarios and accomplished the identification accuracies respectively as 96.95%, 96.42% and 85.77% in average. © 2013 IEEE.

Bhagat D.J.,Science and Commerce College | Dhokane G.R.,Science and Commerce College
Materials Letters | Year: 2014

This letter reports the UV-VIS spectroscopic studies of novel one pot synthesized polyindole/poly(vinyl acetate) (PIN/PVAc) composite films chemically using an oxidant nickel nitrate. The surface morphology of the prepared sample was analyzed through field emission scanning electron microscope (FE-SEM), which shows irregular, non-porous structure and spongy amorphous morphology. The UV-VIS spectroscopy was performed to study optical parameters of PIN/PVAc composite films. These polymeric composite films exhibited strong absorption below 250 nm with a well-defined absorption peak at around 225 nm. The optical band gap energy values of the prepared samples range over 3.924-5.146 eV. However, the maximum optical conductivity of PIN/PVAc composite film was found to be 2.92×108 s-1 at 350 nm. © 2014 Elsevier B.V.

Deokate R.J.,Science and Commerce College | Lokhande C.D.,Shivaji University
Sensors and Actuators, B: Chemical | Year: 2014

Undoped and Ga-doped cadmium oxide thin films were prepared by chemical spray pyrolysis technique using (CH3COO)2Cd·2H 2O as a precursor solution without or with (Ga (NO3) 3-x·H2O) as a doping solution, respectively. The dopant concentration (at% Ga to Cd) was varied from 0 to 2.5 at%. X-ray diffraction (XRD) analyses reveals all the films are of polycrystalline cadmium oxide, possessing cubic structure. The film shows the (2 0 0) preferential orientation for undoped CdO and Ga-doped CdO films. The crystallite size for the 1.5 at% Ga-doped film is found to be minimum (15 nm) among all the films. At a higher doping concentration of 2.5 at%, the disorder produced in the lattice causes an increase in the resistivity of the film. It is found that compared to the undoped CdO film, Ga-doped films show high response to LPG. Among all the doped films studied, the 1.5 at% Ga-doped CdO film shows the maximum response (63%) to 1040 ppm of LPG in air at 673 K. Further, the response and recovery times of the films to LPG become shorter at higher operating temperatures. A possible mechanism of LPG sensing has been explained. The photoluminiscence (PL) studies reveal UV emission in pure CdO which shifts to green emission on doping of Ga. © 2013 Elsevier B.V.

Abhang A.R.,Science and Commerce College
International Journal of Pharma and Bio Sciences | Year: 2013

Investigation to study the effect of Blue-green algal extract, Bioforce, Amruta (19:19:19) and recommended dose (NPK) as foliar sprays on growth of chilli Phule-Jyoti was carried out on farmers field at Yeole Akhada village of Ahmednagar district. The experiment was laid out in randomized block design with three replication. This experiment consists of eight foliar spray treatments. Among the treatments, foliar application of blue-green algal extract was significantly superior to other treatments in increasing the yield of chilli fruits. The highest yield of chilli 171 q/ha. was recorded with the application of blue-green algal extract.

Bhagat D.J.,Science and Commerce College | Dhokane G.R.,Science and Commerce College
Chemical Physics Letters | Year: 2014

Novel one pot synthesis of polyindole/poly(vinyl acetate) composite films was prepared chemically. The monomer indole was polymerized using oxidant cupric chloride. As-synthesized composites were analyzed by X-ray diffraction, Fourier transform infrared spectroscopy and field emission scanning electron microscope equipped with energy dispersive X-ray spectroscopy. The DC conductivity measurements were done through two probe technique. The DC conductivity value was found to be 8.648 × 10-6 S/cm at 383 K. The transference number measurement shows that ionic conductivity was dominant over electronic conductivity. © 2014 Elsevier B.V. All rights reserved.

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