Regional Institute of Education

Mysore, India

Regional Institute of Education

Mysore, India
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Kaur M.,Guru Nanak Dev University | Agarwal P.C.,Regional Institute of Education | Kaur S.,Guru Nanak Dev University
Laser and Particle Beams | Year: 2017

A s-polarized short-pulse laser impinged obliquely on an overdense plasma slab is shown to produce very significant second harmonic in the direction of specular reflection and transmission. The laser induces a non-linear current on electrons, which is curl free. However, with sharp plasma boundary, it gives rise to electromagnetic radiation at the second harmonic. Our formalism includes multiple reflections of the incident and second-harmonic waves from both the front and rear surfaces. The present work includes finiteness of the slab. The normalized second-harmonic amplitude acquires a sharp peak at some specific angle of incidence for a particular set of parameters dependent on thickness of the slab and plasma density. Copyright © Cambridge University Press 2017

Mastan S.A.,P.A. College | Shaffi S.A.,Regional Institute of Education
Internet Journal of Toxicology | Year: 2010

In the present study, attempts have been made to investigate the sub-lethal effect of Organophosphates on the various enzymes such as phosphate activated glutaminase and L-Keto acid activated glutaminase in the different regions of brain of Labeo rohita. A total of 360 specimens of Labeo rohita (weight 90±5 gms and 18-20 cm in length were used in the present study. They were divided into 6 groups and each group has 30 fishes. They were then exposed to sub-lethal concentrations of dichlorvas, monocrotophos and phosphamidon for acute and chronic studies. In exposed fishes, phosphate glutaminase and X-ketoacid glutaminase registered significant changes in different brain regions under both acute and chronic studies. © Internet Scientific Publications, LLC., 1996 to 2010.

Maski K.,Regional Institute of Education | Vijay S.K.,Institute for Excellence in Higher Education
AIP Conference Proceedings | Year: 2015

Sporadically structured ionosphere (i.e. in-homogeneities in refractive index) can cause fluctuations (due to refraction effects) on the radio signal that is passing through it. These fluctuations are called ionospheric scintillations. Low latitude region is suitable for studying these scintillations. The influence of the ionosphere on the propagation of the radio wave becomes very marked with reference to communication or navigational radio system at very low frequency (VLF) to a high frequency (HF), which operate over the distances of 1000 km or more. Radio wave communication at different frequencies depends on structure of the ionosphere. With the advent of the artificial satellites, they are used as a prime mode of radio wave communication. Some natural perturbation termed as irregularities, are present in the form of electron density of the ionosphere that cause disruption in the radio and satellite communications. Therefore the study of the ionospheric irregularities is of practical importance, if one wishes to understand the upper atmosphere completely. In order to make these communications uninterrupted the knowledge of irregularities, which are present in the ionosphere are very important. These irregularities can be located and estimated with the help of Ionospheric TEC and Scintillation. Scintillation is generally confined to nighttime hours, particularly around equatorial and low latitudes © 2015 AIP Publishing LLC.

Kaur N.,Regional Institute of Education | Mohan R.,Barkatullah University | Gaur N.K.,Barkatullah University | Singh R.K.,MATS University
Journal of Alloys and Compounds | Year: 2010

We have investigated the elastic and thermodynamic properties for MCNi3 (M = Zr, Cd, Ag, Tc, Mg, Zn) probably for the first time, by using the modified rigid ion model (MRIM). The computed elastic constants (C11, C12, C44) are closer to the available experimental agreement. Using these elastic constants, we have computed other related elastic properties (B, G, G′, E, σ, β, B/G ratio, Cauchy pressure (C12 - C44) and Lame's parameters (μ, λ)). These properties have shown a good agreement with the available measured data. Besides, we have reported the thermodynamic properties (φ{symbol}, f, θD, υ0, γ, α). The Debye temperature obtained by us is in reasonably good agreement with the available data. The variations of specific heat with temperature are reported for a wide range and compared with the respective experimental data available in the literature. To our knowledge, some of the properties are being reported for the first report on these materials. © 2009 Elsevier B.V. All rights reserved.

Chand N.,Advanced Materials and Processes | Fahim M.,University of Delhi | Sharma P.,Advanced Materials and Processes | Bapat M.N.,Regional Institute of Education
Wear | Year: 2012

The ever increasing demand for high strength lightweight material is driving the current research efforts to develop advanced materials for a variety of structural applications. Polymer matrix composites form that group of advanced materials which are preferred in structural applications owing to their high specific strength. The concern for a safe environment further demands the optimum utilization of reinforcing agents and fillers that are derived from natural sources. In such a scenario rice husk seems promising as filler for polymer matrix composites. It is an agricultural waste produced in bulk quantity during rice milling. It has proved to be efficient agro filler for developing light weight polymer based composites. The weight of rice husk filled polymer composites can be further reduced if foaming agents are introduced. In the present study the influence of a foaming agent on the mechanical and wear behavior of surface modified rice husk filled polyvinylchloride has been studied. Six composites having 10, 20 and 30 weight percent of unmodified and surface modified rice husk having a small percent of a foaming agent have been studied and compared with foamed PVC. It was observed that with an increase in rice husk content wear resistance as well as compressive strength of composites increased. Surface treatment of rice husk by maleic anhydride improved the wear resistance due to improvement in compatibility between rice husk and PVC compound. © 2012 Elsevier B.V.

Nagaraja P.,University of Mysore | Honnur Krishna,University of Mysore | Shivakumar A.,Regional Institute of Education | Shrestha A.K.,University of Mysore
Clinical Biochemistry | Year: 2012

Objective: To develop a simple, rapid, sensitive and affordable assay method for the determination of glucose in blood samples using a novel approach. Design and methods: A spectrophotometric method for glucose quantification in human serum samples based on self-coupling of activated 2,5-dimethoxyaniline (DMA) in the presence of peroxidase (POD)/glucose oxidase (GOD) and H 2O 2 is described. H 2O 2 generated in situ by catalytic reaction between GOD and glucose, activates DMA in the presence of POD to form a green-colored product, which has a strong absorption at λ max=740nm at room temperature (30°C) in a 100mmol/L acetate/acetic acid buffer of pH 4.2. Results: The linearity ranges for the quantification of glucose by rate and one-time detection method are 0.017-0.740 and 0.017-0.478. mmol/L, respectively. Within-day and day-to-day precision were 0.98-1.4% (n = 10) and 1.33-2.89% (n = 15), respectively. Glucose recoveries ranged from 96.6 to 102%, indicating minimal interference by commonly present interferants in serum samples. Accuracy results were between 90 and 102%. The detection and quantification limits of glucose were 2.376 and 7.923 μmol/L, respectively. The proposed method has good correlation coefficient of 0.999 with the enzymatic kit method. Conclusions: This is a rapid and convenient method to determine serum glucose using simple spectrophotometer with excellent recovery and minimal interference by interferants in serum samples with low detection limit. Therefore, this method can be considered for adoption by the clinical diagnostic laboratories. © 2011 Elsevier B.V..

Tanwar P.,Regional Institute of Education
Energy Sources, Part A: Recovery, Utilization and Environmental Effects | Year: 2015

The photogalvanic cell containing sodium Lauryl sulphate as micellar species, mannitol as an electron donor, and methylene blue as photo sensitizer has been used for solar energy conversion and storage. The electrical output of the cell was 999.0 mV, 85.0 A, and 849.15 W, respectively, as photopotential, photocurrent, and power at power point of the cell. The current voltage characteristics of the cell have been studied; observed conversion efficiency was 0.2664% and determine fill factor was 0.32. The performance of the cell in the dark was 45.0 min. © Taylor and Francis Group, LLC.

Sharma P.,Regional Institute of Education | Tiwary L.K.,Regional Institute of Education
Oriental Journal of Chemistry | Year: 2012

Cefuroxime Axetile (CA) is a semi-synthetic broad-spectrum cephalosporin antibiotic for oral administration. The critical micelle concentration (CMC) of this drug determined by spectrophotometric method is found to be 0.2 mM and this value decreases in presence of sodium dodecyl sulphate (SDS) and cetyltrimethylammonium bromide (CTAB). The CMC of CA decreases from 0.2 to 0.12 mM by increasing the concentration of SDS from 0.05 to 5.0 mM.This trend is not regular with CTAB. There is remarkable decrease in CMC of CA from 0.2 to 0.15 mM by increasing concentration of CTAB up to 0.1 mM beyond which it acquires a constant value of 0.14 mM. The effect of CA on micellization of SDS and CTAB has also been investigated in detail in the premicellar region of drug. The CMC of SDS decreases from 7.8 mM to 2.5 mM by increasing the concentration of CA from 0.02 to 0.1 mM. Similar trend has also been observed in case of CTAB where its CMC decreases from 0.86 mM to 0.27 mM within the same concentration range of CA. Effect of temperature on micellization of SDS - CA and CTAB - CA mixed micellar systems has been studied at 303, 313 and 323 K. Physicochemical parameters have been calculated using biphasic model.

Mandal J.,Regional Institute of Education
Journal of Herbs, Spices and Medicinal Plants | Year: 2013

An optimized protocol for micropropagation of Hyptis suaveolens was developed. A 100% shoot regeneration frequency and 16.9 shoots per node explant were achieved on Murashige and Skoog medium (MS) containing 1.0 mg.L -1 N6-benzylaminopurine (BAP) and 0.5 mg.L-1 gibberellic acid (GA3). Node explants of microshoots could be induced for proliferation of a large number of harvestable shoots on the same medium. The shoots developed in vitro inflorescences and 8.5 flowers per shoot on MS medium supplemented with 2.0 mg.L-1 indole-3-butyric acid (IBA). Rooting of microshoots was induced on MS medium containing 1.0 mg.L-1 indole-3-acetic acid (IAA). The plantlets were acclimatized, transplanted to natural soil, and evaluated. The regeneration protocol may provide a means of ex situ germplasm conservation and for research of active constituents. © 2013 Taylor and Francis Group, LLC.

Tiwary L.K.,Regional Institute of Education
Oriental Journal of Chemistry | Year: 2013

Microemulsions are psuedohomogeneous mixtures which may show special performance towards reaction equilibria, nanoscale synthesis and reaction dynamics. Rate of reaction are most often accelerated in microemulsion media compared to that in water. This study is an effort to review some important reaction kinetics measured in reverse micro emulsion media. In the same time some pioneering research works concerned with the synthesis of nanoscale material in inverted (w/o) microemulsion have also been reviewed.

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