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Tripura, India

Tripura University is the main public/central government university of the Indian state of Tripura. Tripura University ranked 4th position in Eastern and 43rd position in all India according to India Today – Nielsen University Ranking Survey 2014 published in India Today on June 30, 2014. Wikipedia.

Langmuir-Blodgett (LB) films of N,N′-dioctadecyl thiacyanine perchlorate (TC18) and octadecyl rhodamine B chloride (RhB18) and their mixtures in the presence and absence ofclay mineral layers were investigated by recording surface pressure-area (π-A) isotherms and by UV-vis and fluorescencespectroscopies. The (π-A) isotherms of TC18, RhB18, and their mixtures are characteristic of liquid expanded state behavior with repulsive interactions between the two cationic dyes. In the presence of laponite, the(π-A) isotherms show liquid expanded and condensed-state behavior. In laponite dispersions and in monolayers, TC18 has a strong tendency to aggregate with formation of H- and J- aggregates. The absorption and fluorescence maxima of the monomers in the films are at 435 nm and at 480 nm; H-dimers have an absorption maximum around 410 nm and do not fluoresce. J-dimers are present in all the films with absorption maximum at461 nm and fluorescence at 463 nm. RhB18 is mainly present as monomers in the LB films with an absorption maximum at 576 nm and fluorescence at 595 nm. Fluorescence resonance energy transferfrom TC18 to RhB18 has been observed in clay dispersions and in films with and without laponite. The optimum condition for TC18→RhB18 fluorescence energy transfer in the films is 90 mol% TC18 p 10 mol % RhB18. © 2010 American Chemical Society. Source

Bhattacharjee S.,Bose Institute of India | Bhattacharjee S.,Tripura University | Bhattacharjee A.,Bose Institute of India | Majumder S.,Bose Institute of India | And 2 more authors.
Journal of Antimicrobial Chemotherapy | Year: 2012

Objectives: The aim of the present study was to characterize glycyrrhizic acid (GA) and assess its immunomodulatory potential in a model of experimental visceral leishmaniasis. Methods: The antileishmanial activity of GA was tested in an amastigote-macrophage model and its non-cytotoxic dose was measured by a cell viability assay. To understand the effector mechanism of GA-treated macrophages against leishmanial parasites, real-time PCR analysis of inducible nitric oxide synthase 2 (iNOS2) was carried out followed by measurement of nitric oxide generation by Griess reagent. The effect of GA on the production of cytokines, such as interleukin (IL)-12, tumour necrosis factor (TNF)-α, IL-10 and transforming growth factor (TGF)-β, was measured by ELISA (protein) and real-time PCR. The expression of iNOS2 and cyclooxygenase-2 (Cox-2) was studied by western blotting. The parasite burden of the liver and spleen following GA treatment was determined by the stamp-smear method, and T cell proliferation was assessed via [. 3H]thymidine uptake, measured by a liquid scintillation counter. Results: Results showed that GA treatment caused an enhanced expression of iNOS2 along with inhibition of Cox-2 in Leishmania donovani-infected macrophages. GA treatment in infected macrophages enhanced the expression of IL-12 and TNF-α, concomitant with a down-regulation of IL-10 and TGF-β. GA increased macrophage effector responses via inhibition of Cox-2-mediated prostaglandin E2 release in L. donovani-infected macrophages. GA also decreased hepatic and splenic parasite burden and increased T cell proliferation in Leishmania-infected BALB/c mice. Conclusions: These results provide a mechanistic understanding of GA-mediated protection against leishmanial parasites within the host. © The Author 2012. Published by Oxford University Press on behalf of the British Society for Antimicrobial Chemotherapy. All rights reserved. Source

Tripathy B.C.,Institute of Advanced Study in Science and Technology | Debnath S.,Tripura University
Journal of Intelligent and Fuzzy Systems | Year: 2013

In this paper we introduce the notion of γ-open sets and γ-continuous functions in fuzzy bitopological spaces. We examine some basic properties and prove some characterization theorems for the said functions. It is observed that every pairwise fuzzy γ-continuous functions is pairwise fuzzy precontinuous but the converse not true. © 2013 - IOS Press and the authors. All rights reserved. Source

Acharya S.,Tripura University
Journal of Pure and Applied Microbiology | Year: 2010

The presence of fungal rot disease in the edible bamboo shoot of Melocanna baccifera in Tripura was reported for first time. The morphological and hierarchical status were also studied in detail. In situ pathogenicity test was carried out according to Koch's postulate through which rot pathogen Pterulicium xylogenum was re-isolated. Source

Folk people of Tripura, a small state of Northeast India, rely on their own traditional knowledge of phenological indicators for predicting the weather, to help plan their agroforestry activities and for disaster prevention. One such prediction relates to the phenology of Nyctanthes arbor-tristis L., night-flowering jasmine, which helps them to forecast the onset of heavy rainfall. During 2007-2009, a comprehensive study was initiated to document the predictive accuracy of this indicator, through conversations and interviews with village members, observation and reviewing the older literature. The researchers found that the flowering of Nyctanthes arbor-tristis is a good indicator of weather lore for the prediction of both short- and long-range precipitation. The information about the prediction of rainfall by observing the flowering phenology was recorded through the interview with village elders. The researchers use interview schedule while interacting with elders. Several small groups of knowledge holders including elder men and women (as focus group) were selected randomly from a wider population of study areas and sampled. A questionnaire was also prepared for knowledge gathering through open conversation and discussion. Prior Informed Consent (PIC) was taken from the knowledge providers time to time. Source

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