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Agartala, India

Chakrabarti S.,MBB College | Sahu K.K.,NGO Working for Psychosocial Rehabilitation of Persons with Mentally Illness | Hazra S.,Bangabasi College
Indian Journal of Forensic Medicine and Toxicology | Year: 2010

The objective of the present study is to compare hopelessness, self-esteem and reaction to frustration between alcohol dependent and normal controls. The control group was screened by General Health Questionnaire-5 (GHQ 5) and Alcohol Use Disorder Identification Test (AUDIT). Hamilton Depression Rating Scale (HDRS) was administered on the alcohol dependent group to rule out depression. Socio-demographic and clinical data were collected from the alcohol dependent group and Beck's Hopelessness Scale, Rosenberg's Self-esteem Scale and Rosenzweig's Picture Frustration study were administered to all 60 subjects. Result showed that alcohol dependent individuals are more hopeless and they possess lower self-esteem than their normal counterparts and their aggression is mostly directed toward external direction. Source


Nath R.K.,Tripura University | Singh Th.C.,Ddm College | Dasgupta S.,Tripura University | Mitra A.,MBB College | Panda A.K.,North Bengal University
Materials Science and Engineering C | Year: 2010

Physico-chemical studies on the interaction of capsular polysaccharide (SPS) isolated from Klebsiella K18, with cationic dyes and surfactants have been reported. SPS is an integral component of gram-negative bacteria and having glucuronic acid as the potential anionic site, induced strong metachromasy (blue shift ∼ 110 nm) in the cationic dye pinacyanol chloride (PCYN). Reversal of metachromasy was observed upon addition of co-solvents which provides a qualitative measurement of stability and nature of metachromatic compound associated with PCYN-SPS interaction. Thermodynamic parameters such as association constant, changes in free energy, enthalpy and entropy of dye-polymer interaction, were evaluated which revealed the nature of interaction. Studies on fluorescence quenching of acridine orange (AO) was also performed. The interaction of SPS with cationic and cationic-non-ionic mixed surfactant systems have been studied by turbidimetry, spectrophotometry, spectrofluorometry and viscosity measurements. The studies could provide an understanding on the effects of the surfactants on binding with the polymer. The binding was found to be electrostatic in origin and also hydrophobic in nature to a certain extent. © 2010 Elsevier B.V. All rights reserved. Source


This paper deals with the mirror rotation problem and the problem of rotation of refracting surface in ray optics. These two problems of rotation in ray optics have been dealt with on the basis of the generalized vectorial laws of reflection and refraction discovered by the author in 2005. In addition to the development of many interesting physical insights to the aforesaid rotation problems in ray optics, the most remarkable fact that has been discovered in the present study is that the proposition 'Velocity of light is unattainable' is not correct. Rather, it is possible to have velocity exceeding the velocity of light a result not in agreement with the special theory of relativity. © 2009 Elsevier GmbH. All rights reserved. Source


Pal P.,MBB College | Bhowmik A.,Tripura University | Roy R.,Tripura University | Ali R.,Tripura University | And 3 more authors.
Indian Journal of Physics | Year: 2010

Diurnal and seasonal behavior of amplitude of NWC 22.3 kHz signal transmitted from Australia (22°49′S, 114°23′E), and received at Kolkata (22°34′N, 88°24′E), India have been investigated The signal amplitude is remarkably low in October. The variations of daily maximum and daily minimum of signal amplitude have been analyzed. The signal on the present propagation path showed non-correlation with Ap index, but showed a moderate but negative correlation with 10.7 cm solar flux. © 2010 IACS. Source


Dinda B.,Tripura University | Debnath S.,MBB College | Banik R.,Tripura University | Sato N.,Kitasato University | Harigaya Y.,Kitasato University
Natural Product Communications | Year: 2011

A new iridoid glucoside, 8-O-(E)-caffeoylmussaenosidic acid (1), together with ixoside (2), was isolated from the roots of Wendlandia tinctoria. The structure of the new compound was established on the basis of detailed spectroscopic (2D NMR) and chemical analysis. Source

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