North Eastern Regional Institute of Science and Technology

About: North Eastern Regional Institute of Science and Technology is a education organization based out in Itanagar, India. It is known for research contribution in the topics: Population & Raman spectroscopy. The organization has 813 authors who have published 1429 publications receiving 16122 citations.

Molecular characterization of phytoplasma of 16SrI-B group association with Acalypha indica in India.

Abstract: The typical phytoplasma symptoms of little leaf, yellowing, chlorosis, witches’ broom, and stunting growth were observed on Acalypha indica plants during the field survey conducted at Lucknow and surrounding districts in year 2015–2016. To confirm the association and possibility of phytoplasma etiology, PCR assays were performed using universal primer pairs (P1/P6) and nested primer pairs (R16F2n/R2) in a total of five diseased samples along with control. A ~1.2 Kb amplicon was observed in nested PCR assay in diseased sample; however, no band was observed in control sample. The positive amplicons were sequenced for 16S rDNA and used for the virtual RFLP analysis and phylogenetic studies. BLASTn search showed 99–100% sequence identities with the ‘Candidatus phytoplasma asteris’ members (16SrI group) and phylogenetic analysis showed closest relationship with member of 16SrI group. The virtual RFLP assigned it as a member of 16SrI-B subgroup. This is the first record of phytoplasma association of ‘Ca. P. asteris’ subgroup B with A. indica in the world.

Study of Stability Analysis using Lyapunov Function for IEEE-9 Bus System

Abstract: In the present work, IEEE 9 bus has been studied, and its stability is estimated via kinetic energy at critical clearing time. In power system, instability is the main reason, which disturbs the main characteristics of the system of multi-machine such as synchronism, critical clearing time of fault, etc. In the given system, faults disrupt the rotor-angle stability, resulting un-synchronism in the machines. The parameters rotor-angle, speed and kinetic energy are estimated with the help of Lyapunov function and the Newton-Raphson method to obtain the stability limits of the system. The detection of stability is improved significantly near to stability limit with the help of kinetic energy, and it is verified by the simulation results.