National Institute of Technology, Meghalaya

About: National Institute of Technology, Meghalaya is a education organization based out in Shillong, India. It is known for research contribution in the topics: Control theory & Electric power system. The organization has 503 authors who have published 1062 publications receiving 6818 citations. The organization is also known as: NIT Meghalaya & NITM.

A Single-Source High-Gain Switched-Capacitor Multilevel Inverter with Inherent Voltage Balancing

Abstract: Design of multilevel inverters (MLIs) using switched-capacitor (SC) is emerging due to suitability in renewable power conversion systems, high-frequency power distribution, etc. Using the SC technique, the number of dc sources can be significantly reduced, and required voltage levels can be created by utilizing the capacitor voltage along with the dc source. In addition to the source reduction, switch count reduction than the conventional MLIs while enhancing the boosting ability is another challenging task. Unlike the SC MLIs presented earlier with a low voltage gain, this paper proposes a new single-source high-gain SC MLI using a reduced number of switches. The proposed topology can synthesize 13-levels in the output utilizing two different modules, i.e., a cross-switched unit and a traditional H-bridge. The capacitors are self-regulated using the integral switching pulse logic used for the switches. The capacitors are charged in parallel and discharged in series to create the required voltage steps. A comparison of the SC MLIs is carried out to confirm the novelty of the proposed topology. The fundamental switching modulation scheme is used to generate the required pulses for controlling the switches. Various simulation tests are conducted to validate the working in a transient environment, and the results are further obtained in real-time using a setup developed in the laboratory.

Monitoring fluorescence emission behaviors of dietary polyphenols in a serum albumin environment

Abstract: The fluorescence emission behavior of bioactive dietary polyphenols in serum albumin has been explored in order to understand their spectroscopic properties along with their binding characteristics using multi-spectroscopic and molecular docking studies. The dual emission character of kaempferol (KMP) within the serum albumin environment suggests that it can be used as a multi-wavelength fluorescent probe.

Data-Driven Extraction of Quantitative Multi-dimensional Associations of Cardiovascular Drugs and Adverse Drug Reactions

Abstract: Early detection of adverse drug reactions as a part of post-marketing surveillance is very crucial for saving a number of persons from unwanted consequences of drugs. Along with the drug, patient’s traits such as age, gender, weight, location are key factors for occurrence of adverse effects. The relationship between drug, patient attributes and adverse drug effects can be precisely represented by quantitative multi-dimensional association rules. But discovery of such rules faces the challenge of data sparsity because of the large number of possible side effects of a drug and fewer number of corresponding data records. In this paper, to address the data sparsity issue, we propose to use variable support based LPMiner technique for detecting quantitative multi-dimensional association rules. For experimental analysis, data corresponding to three cardiovascular drugs namely Rivaroxaban, Ranolazine and Alteplase has been taken from U.S. FDA Adverse Event Reporting System database. The experimental results show that based on LPMiner technique a number of association rules have been detected which went undetected in case of constant support based apriori and FP-Growth technique.

An Implicit Scheme for Shallow Water Flow with Wet Dry Interface

Abstract: A finite difference implicit scheme is presented in this paper for solution of the shallow water equations in one dimensional (1D) form. The present model has many advantages like, handling of discontinuous and complex bed topography, satisfying C-property (preservation of motionless water surface over a wet or dry bed) and capability of handling large value of temporal step etc. Another very important feature of the present model is that, no special treatment of the source vector of the governing equations is required here to deal with very less water depth. To investigate the performance of the present model in diverse situations, it is used to replicate four different problems of known analytical solution, and the model is found to be quite capable for varied situations.

Raman and FTIR Study of a 2, 3'-difluoro-4''-isothiocyanato-4-propyl-1,1':4',1''-terphenyl compound or C3P(3F)P(3F)P-NCS

Abstract: A vibrational spectroscopy study of a laterally fluorinated terphenyl liquid crystalline (LC) compound is presented in this paper. The study consists of temperature dependent Raman study and room t...