Bjb College

Bhubaneshwar, India

Bjb College

Bhubaneshwar, India
Time filter
Source Type

Goi S.K.,Ravenshaw University | Goi S.K.,N C College | Pradhan B.,Bjb College | Behera S.,Bjb College | And 2 more authors.
Solid State Communications | Year: 2017

We have studied the interplay of antiferromagnetism and superconductivity in presence of an applied external magnetic field for the iron based superconductors. For the purpose we have proposed a model Hamiltonian and solved it self-consistently by using the Zubarev's technique of double time Green's function technique. The self-consistent gap equations are solved numerically and interpreted the gap values from the of density of states plots. © 2017 Elsevier Ltd

Pradhan B.,Bjb College | Goi S.K.,Ravenshaw University | Goi S.K.,N C College | Behera S.,Bjb College | And 2 more authors.
Solid State Communications | Year: 2016

We have proposed a theoretical model for the coexistence of superconductivity (SC), antiferromagnetism (AFM) and Jahn-Teller (JT) effect in the mean field approximation for iron based superconductors. The model is solved by using Zubarev's double-time Green's function technique to get their selfconsistent gap equations. Then these gap equations are solved numerically. © 2016 Elsevier Ltd

Palu A.,Utkal University | Palu A.,University of Colorado at Denver | Swain M.M.,Orissa University of Agriculture and Technology | Rath S.,Bjb College
Herpetological Bulletin | Year: 2010

This growth and demographie study of the Fail-throated Lizard Sitana ponticeriana was conducted from 2001-2003 in a tropical environment at Balukhand-Konark Wildlife Sanctuary, Orissa, India. A total of 216 hours (9 hrs/day) of observation were made and 2612 (mean 217.66 ± 88.95) lizards were studied. The size structure between the demographic size classes such as juveniles, subadults and adults changed between the wet (rainy and winter) and dry (summer) seasons. Lizards exhibited a maximum 58-60 mm of SVL. Regression relationships were expressed as linear regression equations and revealed that males were slightly larger than females. Hatchlings were observed in the field between early July and mid-November. For three demographic size classes growth rates varied with season i.e., faster in wet season than dry season. There was no significant sexual dimorphism in growth rate. Lizards reached sexual maturity within a year. On average, die subadult and adult sex-ratio was close lo 1:1 ; however, the data for each group indicated that there was greater abundance of males in the population during the dry than the wet season. Our results indicate that, like other lizard species, growth and demographic characteristics of S. ponticeriana populations fluctuate with the proximate seasons of a tropical environment in natural habitats.

Moharatha D.,Institute of Physics, Bhubaneswar | Roy G.S.,BJB College | Dash U.N.,Siksha ‘O’ Anusandhan University
Advanced Science Letters | Year: 2014

Viscosity and density values of solutions of potassium ferricyanide and potassium ferrocyanide in chitosan solutions of different compositions have been determined at different temperatures ranging from 298.15 K to 313.15 K at an interval of 5 K. Partial molar volume, V 0 Φ is evaluated from apparent molar volume, V Φ. These data have been used to estimate partial molar volumes of transfer ΔV 0 Φ, tr for potassium ferricyanide and potassium ferrocyanide. The viscosity data at various concentrations and at different temperatures have been analysed by the Jone's Dole equation. The nature of solute-solvent and solute-solute interactions have been discussed. The structure breaking and structure making effects of the salts have also been discussed. © 2014 American Scientific Publishers All rights reserved.

Pradhan B.,BJB College | Panda B.K.,Ravenshaw University
Advanced Science Letters | Year: 2014

The effect of irradiation of an intense high-frequency laser field on the electronic structure of a single quantum well based on GaAs/AlxGa1-xAs heterostructures is studied in a non-perturbative approach. In the previous studies the effect of laser field was considered on the confining potential of the well and it showed that the potential is significantly modified by the intensity of the laser field. In this work the position-dependent effective mass is taken into consideration. The Krammers-Henneberger translation and Gauge transformations are applied to reduce the effective mass equation. The Floquet series expansion at sufficiently high frequency yield the so-called laser dressed confining potential and position-dependent effective mass in a time-independent effective mass equation whose solutions are the desired quasi-stationary states. The effect of the dressed effective mass on the electronic properties is quite significant. © 2014 American Scientific Publishers All rights reserved.

Pattnayak N.,Bjb College | Bhuyan N.K.,Bjb College | Behera J.,Bjb College | Biswal U.K.,Bjb College
Indian Journal of Environmental Protection | Year: 2010

A study was conducted for the determination of inorganic anions, such as chloride, fluoride, nitrate, sulphate, sulphide and phosphate in the drinking water collected from five different sources of Balasore town planning area of Balasore a coastal district of Odisha. The observations were made over a period of one year from December 2008 to November 2009. The anion concentration in the drinking water from borewell (the source of municipality water supply) tubewell, openwell was compared with that of surface water. Results showed seasonal fluctuations, however, the concentrations of inorganic anions were found within permissible limits recommended by WHO and Indian Council of Medical Research (ICMR). © 2010 - Kalpana Corporation.

Sarangi P.K.,Orissa University of Agriculture and Technology | Sarangi P.K.,Central Agricultural University | Sahoo H.P.,BJB College | Das M.,Orissa University of Agriculture and Technology
Journal of Pure and Applied Microbiology | Year: 2014

A study was carried out on the population study of Staphylococcus aureus with different carbon sources during the course of ferulic acid catabolism The treatments in the study involved ferulic acid (FA), ferulic acid + glucose (FAG) and ferulic acid + biosludge (FAB) during catabolism process towards production of vanillin. Results revealed that S. aureus consumed ferulic acid rapidly with more than 4-fold increased accumulation of vanillin (45.7 mg/l) on day 2 in FAG treatment, whereas 9.8 mg/l of vanillin accumulation was found on day 7 in FA treatment. FAB treatment gave an intermediate effect on day 4 with vanillin accumulation of 22.8 mg/l. The population of bacteria in FAG medium was highest followed by FAB medium. In FA treatment, their population was lowest among all conditions. Hence, as per the production of vanillin and bacterial population, the treatments can be ranked as FAG > FAB > FA.

Puhan P.,BJB College | Thirunavoukkarasu M.,CSIR - Regional Research Laboratory
African Journal of Biotechnology | Year: 2011

Cotyledon segments from in vitro seedlings of Aegle marmelos were cultured on Murashige and Skoog (MS) medium supplemented with different concentration and combination of growth regulators. Highest regenerative response was observed in the medium containing 1.5 mg/l BA + 0.2 mg/l IAA in which 80% of the explant produced shootlets. After 2 sub-cultures in the same media composition, the shoot bud clusters that developed from cotyledon segments had started elongation of shootlets to a reasonable length of 3 -5 cm. Elongated shoots could be rooted onto half-strength MS medium supplemented with 4 mg/l IBA with 0.2% activated charcoal. © 2011 Academic Journals.

Pradhan B.,Bjb College | Goi S.K.,Ravenshaw University | Goi S.K.,Nc College | Mishra R.N.,Ravenshaw University
Solid State Communications | Year: 2016

We have presented a theoretical study for the coexistence of superconductivity (SC) and Jahn–Teller (JT) effect with applied magnetic field on iron based high-Tc superconductors in s-wave symmetry. The analytic expressions for the temperature dependence of the SC and JT order parameters are derived by Zubarev's technique of double time single particle Green's function method and solved self-consistently. It is observed that in the interplay region, both the gap parameters exhibit very strong dependence of their gap values. The effect of external magnetic field on the gap parameters and the electronic density of states (DOS) is studied. © 2016 Elsevier Ltd

Raj B.K.,Government of Odisha | Pradhan B.,Bjb College | Rout G.C.,Physics Enclave
Solid State Communications | Year: 2015

We report a model study of the phonon response due to the interplay of the superconducting (SC) gap, both static and dynamic Jahn-Teller (DJT) distortions and predict the appearance of the Jahn-Teller (JT) distorted SC excitation peaks in the Raman spectra of high-Tc superconductors. The static JT and s-wave type SC interactions in the conduction band are introduced in this model. The phonons are coupled to the conduction electron density as well as to the JT split conduction bands giving rise to DJT interaction, which is the main objective of this communication. The phonons are considered in a harmonic approximation. The phonon Green's function and hence the phonon self-energy arising due to normal electron-phonon (EP) interaction and DJT interaction are calculated using Zubarev's technique. The phonon self-energy is calculated from the electron response function in the coexistence phase of the two order parameters. Two excitation peaks due to the SC gap and the JT distortion are predicted by phonon density. The evolution of these excitation peaks is investigated by varying different model parameters of the system. © 2015 Elsevier Ltd. All rights reserved.

Loading Bjb College collaborators
Loading Bjb College collaborators