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.

Magnesium Trimethoxyphenylporphyrin Chain Controls Energy Dissipation in the presence of Cholesterol

Abstract: A magnesium porphyrin compound, [Mg(TMPP)(H2O)].(CH3COCH3)2H2O 1 (TMPP = 5,10, 15,20-tetrakis(3,4,5-trimethoxyphenyl)porphyrin) has been synthesized and characterized using single crystal X-ray diffraction and other spectroscopic analysis. The luminescence properties of compound 1 were studied at different concentrations. At higher concentration (3 × 10−3 M), treatment of 1 with cholesterol enhanced the luminescence when excited at Soret band, demonstrating the role of lipid in controlling porphyrin-porphyrin interaction for tuning the bulk photophysical properties. However, at lower concentration (10−5 M) of porphyrin, there was no significant change in luminescence intensity in the presence of cholesterol. It suggests some role of lipids in light harvesting systems where chlorophyll is present at higher concentration.

Variability in physico-chemical parameters of Pachin river (Itanagar).

Abstract: The concentration of water quality parameters in river and heavy metals in the bed sediment were measured for Pachin River for the three major flow periods. The pH, temperature (degree C), conducity (microS cm-1), DO, COD, NH3, PO4, total hardeness and alkalinity (mg/L) were found in the range of 12 to 22, 6.90 to 7.69, 25 to 211, 5.0 to 12.5, 10-115, 1.2 to 12.0, 0.05 to 0.62, 14 to 45, and 12 to 35, respectively. The heavy metals as Zn and Se showed an enrichment of 1 to 25, and 5 to 120, with concentration (microgram/g) range of 8 to 385 and 0.5 to 6.0, for the respective metal, in the labile fraction of the bed sediment. The variability in the physico-chemical parameters for different flow periods may be assigned to dilution of river water by direct runoff, human activities and organic load. The correlation study of physico-chemical parameters shows that their source of entering the river system is the same whether it may be a natural or anthropogenic or both.

Performance analysis of a 4-bit comparator circuit using different adiabatic logics

Abstract: In this paper, a 4-bit comparator circuit is designed by using Efficient Charge Recovery Logic (ECRL) and Positive Feedback Adiabatic Logic (PFAL). The designed 4-bit comparator circuit is compared with the conventional CMOS logic in terms of performance parameters like power dissipation and number of transistors used. Simulation results reveal that the 4-bit ECRL comparator is 13.64% more efficient in power consumption as compared to the CMOS comparator, whereas a 4-bit PFAL comparator is 54.54% more efficient in power consumption than the CMOS comparator. All simulations are performed by using cadence virtuoso tool in gpdk 180nm CMOS technology.