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Karnwal A.,Bhojia Institute of Life science | Kaushik P.,Gurukula Kangri Vishwavidyalaya
Archives of Phytopathology and Plant Protection | Year: 2011

Free-living bacteria may trigger the plant growth through production of phytohormones viz. gibberellins, auxins and cytokinins. A total 50 isolates of fluorescent Pseudomonas were screened for their ability to produce cytokinins such as isopentenyladenosine (IPA), dihydroxyzeatin riboside (DHZR) and zeatin riboside (ZR) as plant growth-promoting activity. Pseudomonas fluorescens AK1 and Pseudomonas aeruginosa AK2 were found higher phytohormones producing strains. Of the three cytokinins, IPA was the major cytokinin produced by both isolates in pure culture (5.5 and 2.9 pmol/ml, respectively) and with rice root exudates (5.9 and 3.4 pmol/ml, respectively). Production of ZR and DHZR for both organisms was found after 48 and 72 h. Amount of ZR and DHZR increased with time for both isolates in pure culture conditions. In presence of rice, production of ZR was increased 0.8 and 0.6 pmol/ml for P. fluorescence AK1 and P. aeruginosa AK2, respectively, in comparison with controls. There was no significant difference in the production of DHZR with rice exudates. © 2011 Taylor & Francis. Source

Patni J.C.,Mewar University | Aswal M.S.,Gurukula Kangri Vishwavidyalaya
Proceedings on 2015 1st International Conference on Next Generation Computing Technologies, NGCT 2015 | Year: 2015

Rapid growth of internet and other technologies seems more challenging to develop the high speed networks with powerful capabilities in lower computational cost. To cover the above problem grid computing has emerged rapidly. The previous technologies such as distributed computing cluster computing, parallel computing, etc., facing the problem of space utilization. Using Grid Computing technologies the distributed resources can be accessed or used situated around the world without any geographical limitations. Algorithms developed earlier basically focused on homogenous set of computing nodes having homogenous network with higher computational speed. In this paper we are addressing the problem of adaptability, scalability and heterogeneity that creates grid computing environment more challenging. Here covered the important aspects of grid computing; scalability heterogeneity, and allocation of resources dynamically. The proposed multilevel tree architecture that is Hierarchal; Covers scalability and heterogeneity of the resources All the computing resources are independent from the architecture of grid. © 2015 IEEE. Source

Pathak H.,Gurukula Kangri Vishwavidyalaya
ACM International Conference Proceeding Series | Year: 2011

Mobile Agents are no longer a theoretical issue, since different architectures for their realization have already been proposed. Security is an important issue for the widespread deployment of applications based on mobile agent technology. Despite its many practical benefits, without the proper solution to the security problems, use of agent-based applications is severely impeded. This paper identifies the major issues related with the security of mobile agents and presents an architecture which is hybrid in nature i.e. uses different approaches and techniques to solve the security related problems of mobile agents. Proposed architecture is centralized at one level and distributed at other. Pull and push both approaches have been used to detect the host failure. It takes the use of existing security techniques such as digital signature, use of public and private key, intrusion detector system, signed agreement etc. to ensure the security of both mobile agents and the executing hosts. Copyright © 2011 ACM. Source

Patni J.C.,Mewar University | Aswal M.S.,Gurukula Kangri Vishwavidyalaya
Proceedings on 2015 1st International Conference on Next Generation Computing Technologies, NGCT 2015 | Year: 2015

Workload information management and resource management are two key aspects in grid computing to provide the better services to grid environment users. Grid computing also faced other challenging areas like heterogeneous nature of resources, huge number of computing elements, independency of computing resources, different processing capacities of the nodes, different types of load conditions, overloading of jobs at computing nodes, underutilized of resources, etc. A distributed load balancing algorithm is proposed that can handle any kind of grid structure. The proposed algorithm is divided into two steps: To reduce the time taken for executing the jobs or we can say reduce the response time and communication cost between transferring the jobs from one computing node to another in a grid architecture. In proposed algorithm it is shown that the load will be primarily balanced at local level to reduce the communication cost. © 2015 IEEE. Source

Saini R.,Gurukula Kangri Vishwavidyalaya | Ashokan V.,Texas A&M University at Qatar | Indu B.D.,Indian Institute of Technology Roorkee
Superlattices and Microstructures | Year: 2015

The lattice thermal conductivity of InAs/AlSb superlattices is investigated on the basis of modified Callaway model, which successfully explains the inadequacies of Matthiessen's rule. In the new formulation, the relaxation times of various contributing processes have been observed in terms of line widths. The evaluation of line widths is carried out by double time temperature dependent Green's function theory, using a comprehensive Hamiltonian which includes the contribution due to electrons, phonons, impurities, anharmonicities and interactions thereof. The frequency line widths are observed as an extremely sensitive quantity in the transport phenomena of superlattices, as it depends on large number of scattering events, namely; combined boundary, impurity, phonon-phonon and interference scattering processes. It is observed in the present work that the lattice thermal conductivity of superlattices is much less than that of a bulk sample. This can be attributed due to the reduction of phonon group velocity and strong phonon-phonon interactions, which in turn causes the decrease in relaxation times and phonon conductivity. Also, it is remarkable to note that the present theoretical model is equally application to all quantum well structures. © 2015 Elsevier Ltd. All rights reserved. Source

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