Amolakchand Mahavidyalaya

Yavatmāl, India

Amolakchand Mahavidyalaya

Yavatmāl, India
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Shaikh Kalim S.H.,Amolakchand Mahavidyalaya | Lad A.B.,Amolakchand Mahavidyalaya | Pawar B.H.,Sant Gadge Baba Amravati University
International Journal of ChemTech Research | Year: 2014

The experimental results of the influence of low and high concentration of potassium chloride dopant on ADP crystals are presented. The dopant results to an enhance crystal growth rate. Further high concentration of dopant improves the quality of the crystal with better transparency in UV- visible region of electromagnetic spectrum. FTIR spectra confirmed the presence of dopant in pure ADP crystal. UV-Visible spectroscopic studies reveal that on increasing the dopant concentration in ADP, the lower cut of wavelength increases, it is 250nm and crystal shows good transparency in UV- Visible region. The dielectric constant measured indicates that the crystal is less defective and has high value of damage threshold. The dielectric constant decreased with increase in frequency and temperature of crystal. The crystal developed has low value of dielectric constant proves to be a good in NLO property. The powder SHG measurement showed that the efficiency increased with increase in concentration of KCl in ADP crystal than the pure ADP crystal and efficiency high at the high concentration of KCl in ADP crystal.

Mishra R.A.,Amolakchand Mahavidyalaya | Raut N.B.,Vidya Bharati Mahavidyalaya
Proceedings - ISPTS-1, 1st International Symposium on Physics and Technology of Sensors | Year: 2012

The output of transducers which are used in physiological measuring is observed to be nonlinear. This nonlinear characteristic of transducers fails to measure the actual value of physiological parameter like temperature, pulse rate, heart beats, etc. the researcher has developed the body temperature measuring transducer using time base oscillating circuit and thermister as temperature sensing element. The time base circuit, phototransistor and LED are used for designing quick recovery heart beat sensor. The design technique of these transducers, their characteristics and comparisons with existing sensors in similar kind of biomedical instruments is discussed in this paper. © 2012 IEEE.

Dudhe C.M.,Government Institute of Science | Nagdeote S.B.,Amolakchand Mahavidyalaya | Chaudhari C.P.,Government Science College
Ferroelectrics | Year: 2015

Ferroelectric domains in Sr0.5Ba0.5Nb2O6 (SBN50) at nanolevel have been investigated by means of temperature dependence of dielectric permittivity, hysteresis study and the transmission electron microscopy (TEM). The temperature dependence of dielectric constants of SBN50 measured at 100Hz confirmed a relaxor nature of the material. The Curie temperature range was found to be shifted towards the room temperature side. Spontaneous polarization values, obtained from the hysteresis loop, were found to be very small. The discrepancy in the observed behavior from the literature reported one was interpreted and correlated to the domain formation in SBN50 nanoparticles. Physical evidences of domain like structures in SBN50 nanoparticles were also reported. © 2015 Copyright © Taylor & Francis Group, LLC.

Rajput P.R.,Vidyabharti Mahavidyalaya Camp | Gajbhiye A.V.,Mgvs Asc College | Bhade M.W.,Amolakchand Mahavidyalaya
Asian Journal of Chemistry | Year: 2012

Thiazines are very useful units in the fields of medicinal and pharmaceutical chemistry and have been reported to exhibit a variety of biological activities. This has directed us to synthesize chloro-substituted thiazines from 2'-hydroxy-3',5'-dichloro-4-4'-chlorophenyl chalcone with thiourea, phenyl thiourea and diphenyl thiourea. In this series, we have synthesized 4-(2'-hydroxy-3',5'-dichlorophenyl)-6- (4'-chlorophenyl)-2-imino-1, 3-thiazine and 4-(2'-hydroxy-3',5'-dichlorophenyl)-6-(4'-chlorophenyl)-2- iminophenyl-1,3-thiazine from thiourea and phenyl thiourea respectively and 4-(2'-hydroxy-3',5'-dichlorophenyl)-6-(4'-chlorophenyl)-2-iminophenyl-3-phenyl- 1,3- thiazine from diphenyl thiourea. The newly synthesized chloro-substituted 1,3-thiazines were screened for their antibacterial activities against Gram positive pathogens Staphylococcus aureus and Streptococcus sp. and Gram negative pathogens Pseudomonas sp. and Salmonella typhi. All these compounds have been characterized on the basis of their UV, IR and NMR spectral studies.

Rajurkar A.V.,Sant Gadge Baba Amravati University | Tidke J.A.,Sant Gadge Baba Amravati University | Jadha S.S.,Amolakchand Mahavidyalaya
International Journal of Pharma and Bio Sciences | Year: 2013

Pollen morphology of eight genera belonging to sub-family Mimosaceae of Leguminosae have been examined by Light and Scanning Electron Microscope (SEM). The Sub-family Mimosaceae is referred to as eurypalynous family because of the great variety of pollen types found in its members. Pollen morphological characters are found to be significantly helpful at generic or species level. The morphological variation in size, shape, surface structure and surface pattern occurs in all studied acetolysed and unacetolysed pollen grains. The present reports gives an account of pollen morphological variations in eight genera of Mimosaceae growing in Amravati University campus.

Dudhe C.M.,Government Institute of Science | Nagdeote S.B.,Amolakchand Mahavidyalaya | Atram R.G.,Government Institute of Science
Materials Letters | Year: 2016

In this paper, we report the existence of polymorphic tetragonal phase in BaNb2O6 (BN) nanoparticles for the first time. Polymorphic tetragonal tungsten bronze (TTB)-like and orthorhombic phases of BN compound were obtained by a citrate-gel method. The obtained TTB-like phase was not solely confirmed by means of X-ray diffraction (XRD) pattern because of the admixture of two phases. However, by the additional characterizations such as morphology of the synthesized particles, well-defined ferroelectric hysteresis loops, and presence of 180° domains the TTB-like phase was identified. © 2016 Elsevier B.V. All rights reserved.

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