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Orissa, India

The North Orissa University is a public and open university located in the regional city of Baripada in the state of Orissa, India. The Government of Orissa under the Section 32 of the Orissa University Act, 1989 , established the North Orissa University and notified vide notification No. 880 dated 13 July 1998. The University is included in the list of Universities maintained under section 2 of the University Grants Commission Act, 1956, to impart higher education in the Tribal base area of Northern Orissa. The jurisdiction of the University extends over two districts, Mayurbhanj and Keonjhar. There are 80 affiliated colleges, both general and professional, catering to the demand of higher education. This university mainly provided higher education through the on-campus as well as distance education mode. It aims to provide job oriented technical courses in various fields. Wikipedia.

Swain S.K.,North Orissa University
Journal of Polymer Engineering | Year: 2011

Polymer/clay nanocomposites were prepared by the single screw extruder with an attached die to an ultrasound of variable amplitude. The structure and morphology of nanocomposites were studied by X-ray diffraction (XRD) and transmission electron microscopy (TEM). Mechanical properties such as Young's modulus, elongation, breaking stress, toughness, yield stress and yield stain of ultrasonically treated nanocomposites were changed significantly in comparison to untreated nanocomposites. From rheology data, it was found that the complex viscosities of nanocomposites were increased with clay loading and decreased after ultrasonic treatment. It was found that both clay and ultrasonic intensity played a vitalrole in the dispersion of clay in the polymer matrix. From the differential scanning calorimeter (DSC) results it was found that the addition of clay in the nylon 6 matrix leads to a decrease of crystallization and this property increased ultrasonic amplitude. The oxygen permeability of PA6/clay nanocomposites was measured and it was found that a substantial reduction in oxygen permeability was observed by increasing clay loading. © 2011 by Walter de Gruyter. Berlin. Boston.

Sahu B.,North Orissa University
Physical Review C - Nuclear Physics | Year: 2011

An approach we have proposed recently for calculation of Q α energy and decay half-life T1/2α on the α decay of radioactive heavy ions is applied to the evaluation of these two important parameters for the nuclei in the superheavy region Z = 112-118 for which experimental data are not available. It is shown that the α + nucleus potential represented by an exactly solvable potential used in the calculation could be expressed in terms of proton (Z) and neutron (N) numbers of the α emitter so that varieties of α-emitting nuclei differing in their Z and N values could be addressed for their decay properties without the help of any adjustable parameter and the results of Qα and T1/2α for a nucleus are estimated without any prior knowledge of any one of these quantities. This procedure to obtain the values of Qα and T1/2α works well to reproduce the known experimental results for superheavy nuclei and hence, the procedure is expected to provide proper information about these parameters in experiments on α decay of new nuclei in the superheavy region. © 2011 American Physical Society.

Mallick P.,North Orissa University
Proceedings of the National Academy of Sciences India Section A - Physical Sciences | Year: 2014

Cu2O/CuO nanocomposite has been synthesised by sol–gel route. The microstructural and optical absorption analyses were carried out using X-ray diffraction (XRD) and UV–visible spectrophotometer. The presence of Cu2O in Cu2O/CuO nanocomposite did not affect the microstructure of CuO. However, the optical absorption band of CuO was influenced in the presence of Cu2O in Cu2O/CuO nanocomposite. The values of indirect and direct band gap of CuO in Cu2O/CuO nanocomposite showed higher red shift and lower blue shift when compared with the corresponding reported values of CuO nanoparticles. © 2014, The National Academy of Sciences, India.

Mallick P.,North Orissa University
Materials Science-Poland | Year: 2014

Composites of hematite (α-Fe2O3) nanoparticles with different materials (NiO, TiO2, MnO2 and Bi 2O3) were synthesized. Effects of different materials on the microstructure and optical band gap of α-Fe2O3 nanoparticles were studied. Crystallite size and strain analysis indicated that the pure α-Fe2O3 nanoparticles were influenced by the presence of different materials in the composite sample. Crystallite size and strain estimated for all the samples followed opposite trends. However, the value of direct band gap decreased from ∼2.67 eV for the pure α-Fe2O3 nanoparticles to ∼2.5 eV for α-Fe2O3 composites with different materials. The value of indirect band gap, on the other hand, increased for all composite samples except for α-Fe2O3/Bi2O 3. © 2013 Versita Warsaw and Springer-Verlag Wien.

Sahu B.,North Orissa University
Physical Review C - Nuclear Physics | Year: 2012

We account for the extremely long (∼1018 yr) as well as short (∼10 -4 s) lifetimes of α decay in the cases of naturally occurring heavy α emitters with proton number Z=58-82 and successfully predict the results via an analytical expression for the decay half-life, developed by using an exactly solvable global potential in the theory of potential scattering. © 2012 American Physical Society.

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