Kumar R.,Allenhouse Institute of Technology |
Singh S.,Brahmanand College |
Mishra A.K.,Nanak Chand Anglo Sanskrit College
Journal of Polymer Materials | Year: 2010
The pulsed-plasma polymerization technique has been use to prepare the polyaniline (PANI) thin film. The effects of substrate position, pressure and number of plasma pulses on the film growth rate were monitored and established ideal conditions. The structural and optical behaviors of the PANI thin film were characterized using UV-vis, FTIR and optical absorption spectra. The electrical conductivity measurements were also carried out at different conditions. © MD Publications Pvt. Ltd.
Awasthi R.,Brahmanand College |
Shikha D.,Brahmanand College
Research Journal of Pharmaceutical, Biological and Chemical Sciences | Year: 2014
Green chemistry, also called sustainable chemistry, is a chemical philosophy encouraging the design of products and processes that reduce or eliminate the use and generation of hazardous substances. Whereas environmental chemistry is the chemistry of the natural environment, and of pollutant chemicals in nature, green chemistry seeks to reduce and prevent pollution at its source.
Misra A.K.,Banaras Hindu University |
Mishra S.N.,Brahmanand College |
Pathak A.L.,Brahmanand College |
Misra P.,DAV Post Graduate College |
Naresh R.,Uttar Pradesh Technical University
Applied Mathematics and Computation | Year: 2012
A delay mathematical model for the control of cholera epidemic is proposed and analyzed. It is assumed that the disease spreads through carriers, which makes the human food contaminated by transporting bacteria from the environment. It is also assumed that insecticides are used to control the carriers with the rate proportional to the density of carriers. The analysis of model shows that the disease may be controlled by spraying insecticides but a longer delay in spraying insecticides may destabilize the system. Simulation is also carried out to support the analytical results. © 2012 Elsevier Inc. All rights reserved.
Yadav E.,Janta College Bakewar |
Singh M.,Brahmanand College |
Saxena P.N.,Dr. M.G.R. Educational and Research Institute
National Academy Science Letters | Year: 2014
Synthetic pyrethroids form a group of widely used insecticides in agriculture and home formulations. The widespread use of these pyrethroids and the corresponding increase in animal and human exposure had led to sustained interest in their toxicology. α-cypermethrin and λ-cyhalothrin are two important type-II pyrethroids which intensively control a wide range of pests. Most of the SAR studies done so far on pyrethroids are based on the consideration of stereochemical properties and very little attention has been given to SAR studies based on electronic properties. An effort has been made to explain the activity and preferred sites of electrophilic attack in α-cypermethrin and λ-cyhalothrin on the basis of atomic charges, molecular electrostatic potentials at surfaces, distribution of frontier molecular orbitals, highest occupied molecular orbital energy (E-HOMO), lowest unoccupied molecular orbital energy (E-LUMO) and HOMO-LUMO gap of two molecules. © 2014 The National Academy of Sciences, India.
Malik S.,Brahmanand College |
Chaudhary R.,Brahmanand College |
Pathak A.,Brahmanand College |
Chakraborty P.S.,Brahmanand College
Procedia Computer Science | Year: 2015
In this paper, an analytic model is present for evaluating the MAC layer Collision Probability and mean delay at wireless nodes using the Distributed Coordination Function of IEEE 802.11 MAC Model. This model is valid for finite loads and can account for arbitrary arrival patterns, packet size distributions and number of nodes. Each node is modeled as a discrete time M/G/1 queue and impact of packet collisions, the resulting back-offs as well as the packet size distribution. We analyze this Model for different number of nodes in any network. The impact of arrival pattern on collision probability and delay is also analyzed. © 2015 The Authors. Published by Elsevier B.V.