North Eastern Hill University

About: North Eastern Hill University is a education organization based out in Shillong, Meghalaya, India. It is known for research contribution in the topics: Population & Catalysis. The organization has 2318 authors who have published 4476 publications receiving 48894 citations.

Ocular Parasitoses and Their Immunology

Abstract: Parasitic infections of the eye are a major cause of ocular diseases in many parts of the globe. The causative agents of ocular parasitoses include several species of unicellular protozoan and metazoan helminth parasites, which have a natural predilection for and utilize the eye as their habitat. At times ocular invasion by accidental or uncommon parasites may result in infections of unusual nature. In this review the authors discuss the various parasitic causal agents of eye diseases and the current status of immunology against ocular parasitoses.

FT-SDN: A Fault-Tolerant Distributed Architecture for Software Defined Network

Abstract: The traditional Software Defined Network (SDN) architecture is based on single controller in the Control Plane. Therefore, network functioning become highly dependent on the performance of the single controller in the Control Plane, which is undesirable for any reliable application. Despite many advantages of SDN, its deployment in the practical field is restricted since reliability and fault-tolerance capabilities of the system are not satisfactory. To overcome these difficulties of SDN, (FT-SDN) architecture has been proposed. The proposed architecture consists of a simple and effective distributed Control Plane with multiple controllers. FT-SDN uses a synchronized mechanism to periodically update the controller’s state within themselves. In case of failure, FT-SDN has the ability to select another working controller based on the distance and delays among different network entities. The performance of the FT-SDN architecture was examined with respect to different specifications in the presence of faults. Experimentation was done in simulation where results were found to be satisfactory.

Periodically driven underdamped periodic and washboard potential systems: dynamical states and stochastic resonance.

Abstract: We have studied the motion of an underdamped Brownian particle in (i) a bistable periodic potential and (ii) washboard potentials subjected to a sinusoidal external field. The particles are shown to be effectively in two dynamical states of their trajectories with distinct amplitudes and phase relationship with the external drive. These dynamical states are stable with fixed energies at low temperatures, but transitions between them take place as the temperature is increased. The average input energy loss to the environment per period of the drive shows a stochastic resonance (SR) peak as a function of temperature for the underdamped system potentials studied. The occurrence of SR in these systems is explained using the statistics of transitions between the two dynamical states.

Pd(0) NPs: a novel and reusable catalyst for the synthesis of bis(heterocyclyl)methanes in water

Abstract: A ligand free, Pd-nanoparticle catalyzed synthesis of bis(heterocyclyl)methane derivatives is described herein. The advantages of this method lie in its simplicity, cost effectiveness and environmentally friendliness. The process is very green, as water is exploited as the reaction medium.