Santiniketan, India
Santiniketan, India

Visva-Bharati University is one of India's major Central Govt. funded autonomous university located in Santiniketan, West Bengal. It was founded by Rabindranath Tagore who called it Visva Bharati, which means the communion of the world with India. In its initial years Tagore expressed his dissatisfaction with the word 'university', since university translates to Vishva-Vidyalaya, which is smaller in scope than Visva Bharati. Until independence it was a college. Soon after independence, in 1951, the institution was given the status of a university and was renamed Visva Bharati University.The English-daily, The Nation notes,"Using the money he received with his Nobel Prize for Literature in 1913, the school was expanded and renamed Visva-Bharati University. It grew to become one of India's most renowned places of higher learning, with a list of alumni that includes Nobel-winning economist Amartya Sen, globally renowned filmmaker Satyajit Ray and the country's leading art historian, R. Siva Kumar, to name just a few" Wikipedia.

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Agency: GTR | Branch: EPSRC | Program: | Phase: Training Grant | Award Amount: 4.34M | Year: 2014

This world-leading Centre for Doctoral Training in Bioenergy will focus on delivering the people to realise the potential of biomass to provide secure, affordable and sustainable low carbon energy in the UK and internationally. Sustainably-sourced bioenergy has the potential to make a major contribution to low carbon pathways in the UK and globally, contributing to the UKs goal of reducing its greenhouse gas emissions by 80% by 2050 and the international mitigation target of a maximum 2 degrees Celsius temperature rise. Bioenergy can make a significant contribution to all three energy sectors: electricity, heat and transport, but faces challenges concerning technical performance, cost effectiveness, ensuring that it is sustainably produced and does not adversely impact food security and biodiversity. Bioenergy can also contribute to social and economic development in developing countries, by providing access to modern energy services and creating job opportunities both directly and in the broader economy. Many of the challenges associated with realising the potential of bioenergy have engineering and physical sciences at their core, but transcend traditional discipline boundaries within and beyond engineering. This requires an effective whole systems research training response and given the depth and breadth of the bioenergy challenge, only a CDT will deliver the necessary level of integration. Thus, the graduates from the CDT in Bioenergy will be equipped with the tools and skills to make intelligent and informed, responsible choices about the implementation of bioenergy, and the growing range of social and economic concerns. There is projected to be a large absorptive capacity for trained individuals in bioenergy, far exceeding current supply. A recent report concerning UK job creation in bioenergy sectors concluded that there may be somewhere in the region of 35-50,000 UK jobs in bioenergy by 2020 (NNFCC report for DECC, 2012). This concerned job creation in electricity production, heat, and anaerobic digestion (AD) applications of biomass. The majority of jobs are expected to be technical, primarily in the engineering and construction sectors during the building and operation of new bioenergy facilities. To help develop and realise the potential of this sector, the CDT will build strategically on our research foundation to deliver world-class doctoral training, based around key areas: [1] Feedstocks, pre-processing and safety; [2] Conversion; [3] Utilisation, emissions and impact; [4] Sustainability and Whole systems. Theme 1 will link feedstocks to conversion options, and Themes 2 and 3 include the core underpinning science and engineering research, together with innovation and application. Theme 4 will underpin this with a thorough understanding of the whole energy system including sustainability, social, economic public and political issues, drawing on world-leading research centres at Leeds. The unique training provision proposed, together with the multidisciplinary supervisory team will ensure that students are equipped to become future leaders, and responsible innovators in the bioenergy sector.

The present study was aimed to find out the prevalence of overweight and obesity and its associated factors among Bengalee children and adolescents in the Kolkata, India. A total of 1061 Bengalee school children and adolescents (610 boys and 451 girls) participated and were divided into three age groups: Group I = 8-11 years; Group II = 12-15 years and Group III = 16-18 years. Overweight and obesity were defined as: Overweight (between ≥85 th and <95 th percentile) and obesity (≥95 th percentile). Multivariate regression analyses (adjusted for age and sex) of body mass index (BMI) revealed that about 18% (R2 = 0.185) of total variance of BMI could be explained by monthly family income, participants think obese, consumption of too much junk foodstuffs, breakfast skip, extra consumption of salt, and computer hours. Sedentary lifestyles, including increasing fast food preferences may be responsible for increasing occurrence of pediatric and adolescent obesity in this population.

Brahmachari G.,Visva Bharati University | Das S.,Visva Bharati University
Tetrahedron Letters | Year: 2012

A simple, straightforward, and highly efficient diastereoselective multicomponent one-pot synthesis of a series of pharmaceutically interesting functionalized piperidine derivatives has been developed based on a low-cost and environmentally benign Bi(NO 3) 3·5H 2O catalyst via tandem reactions of 1,3-dicarbonyl compounds, aromatic aldehydes, and various amines in ethanol at room temperature. High atom-economy, good yields, eco-friendliness, and mild reaction conditions are some of the important features of this protocol. © 2012 Elsevier Ltd. All rights reserved.

Brahmachari G.,Visva Bharati University
ACS Sustainable Chemistry and Engineering | Year: 2015

A simple and energy-efficient green protocol for the synthesis of a series of biologically interesting functionalized bis-lawsone [i.e., 3,3′-(aryl/alkyl-methylene)bis(2-hydroxynaphthalene-1,4-dione)] scaffolds has been developed in the presence of sulfamic acid as an eco-friendly organocatalyst via one-pot pseudomulticomponent reaction at room temperature. The salient features of the present protocol are mild reaction conditions, good to excellent yields, operational simplicity, energy-efficiency, high atom-economy, eco-friendliness, easy isolation of products and no column chromatographic separation. © 2015 American Chemical Society.

An efficient and straightforward l-proline catalyzed one-pot synthesis of a series of biologically relevant gem-(β-dicarbonyl)arylmethanes has been developed via a three-component reaction between indoles, aldehydes and C-H activated acids by grinding them together under solvent-free conditions at room temperature. Mild reaction conditions, high atom-economy, good yields, and eco-friendliness are some of the salient features of the present protocol. © 2014 The Royal Society of Chemistry.

Ghosh P.K.,Visva Bharati University
Journal of Physics Condensed Matter | Year: 2012

Examples of non-Hermitian quantum systems admitting a topological insulator phase are presented in one, two and three space dimensions. All of these non-Hermitian Hamiltonians have entirely real bulk eigenvalues and unitarity is maintained with the introduction of appropriate inner products in the corresponding Hilbert spaces. The topological invariant characterizing a particular phase is shown to be identical for a non-Hermitian Hamiltonian and its Hermitian counterpart, to which it is related through a non-unitary similarity transformation. A classification scheme for topological insulator phases in pseudo-Hermitian quantum systems is suggested. © 2012 IOP Publishing Ltd.

Ghosh A.,Visva Bharati University
Asia-Pacific Journal of Public Health | Year: 2011

Objectives. To study whether the prevalence of overweight and obesity in children and adolescents is restricted by habitat (urban vs rural). Methods. A total of 753 healthy children and adolescents, out of which 293 (159 boys and 134 girls) were collected Santiniketan (rural area) and 460 (241 boys and 219 girls) were from Calcutta and the suburbs (urban area), aged 8 to 18 years took part in the study. Participants were subsequently divided into 3 age groups: group I, 8 to 12 years; group II, 13 to 15 years, and group III, 16 to 18 years. Results. It was observed that the overall prevalence of overweight and obesity in the study was 9.6% and 5.7%, respectively. Urban residence and high level of parental education are associated with overweight and obesity in children and adolescents (R2 = 40.3%). Conclusion. Prevalence of overweight and obesity among children and adolescents is not restricted to any particular habitat and warrants early intervention if this global epidemic is to be checked. © 2011 Asia-Pacific Academic Consortium for Public Health.

A simple, straightforward, and highly efficient multicomponent one-pot synthesis of a pharmaceutically interesting diverse kind of functionalized 2-amino-3-cyano-4H-pyrans and pyran-annulated heterocycles has been developed based on a low-cost and environmentally benign commercially available urea as a novel organo-catalyst. The reaction occurs via tandem Knoevenagel- cyclocondensation of aldehydes, malononitrile, and C-H-activated acidic compounds in aqueous ethanol at room temperature. Following this protocol, it was possible to synthesize 2-amino-3-cyano-pyrano[3,2-c]chromen-5(4H)-ones (4aa-4al), 2-amino-3-cyano-pyrano[4,3-b]pyran-5(4H)-ones (4ba-4be), 2-amino-3-cyano-7,8-dihydro-4H-chromen-5(6H)-one (4ca-4cr), 1H-pyrano[2,3-d] pyrimidine-2,4(3H,5H)-diones (4da-4dd), 2-amino-3-cyano-5,10-dioxo-5,10-dihydro- 4H-benzo[g]chromenes (4ea-4ec), 2-amino-3-cyano-4H-pyrans (4fa-4fh), and 1,4-dihydropyrano[2,3-c]pyrazoles (4ga-4gb). The salient features of the present protocol are mild reaction conditions, excellent yields, high atom-economy, eco-friendly standards, easy isolation of products, no column chromatographic separation, and reusability of reaction media. Bis-pyranization has also been observed in the reactions of terephthaldehyde. © 2013 American Chemical Society.

Pal D.,Visva Bharati University
Computers and Mathematics with Applications | Year: 2013

The influence of Hall current and thermal radiation on flow and heat transfer characteristics in a viscous fluid over an unsteady stretching permeable surface is studied in this paper. The unsteadiness in the flow and temperature fields is because of the time-dependent stretching velocity and surface temperature. Similarity transformations are used to convert the governing time dependent nonlinear boundary layer equations for momentum and thermal energy to a system of nonlinear ordinary differential equations. These equations are solved numerically by applying shooting method using Runge-Kutta-Fehlberg method and analytically by differential transform method with Padé approximants (DTM-Padé). Comparison of the numerical results and analytical solutions (based on DTM-Padé approximant) is made with the earlier published results. The effects of the unsteadiness parameter, thermal radiation, Hall effects, suction/injection parameter and non-uniform heat source/sink parameter on flow and heat transfer characteristics as well as on the local Nusselt number are shown graphically. © 2013 Elsevier Ltd. All rights reserved.

Ghosh P.K.,Visva Bharati University
Journal of Physics A: Mathematical and Theoretical | Year: 2011

A method to construct a non-Dirac-Hermitian supersymmetric quantum system that is isospectral with a Dirac-Hermitian Hamiltonian is presented. The general technique involves a realization of the basic canonical (anti-)commutation relations involving both bosonic and fermionic degrees of freedom in terms of non-Dirac-Hermitian operators which are Hermitian in a Hilbert space that is endowed with a pre-determined positive-definite metric. A pseudo-Hermitian realization of the Clifford algebra for a pre-determined positive-definite metric is used to construct supersymmetric systems with one or many degrees of freedom. It is shown that exactly solvable non-Dirac-Hermitian supersymmetric quantum systems can be constructed corresponding to each exactly solvable Dirac-Hermitian system. Examples of non-Dirac-Hermitian (i) non-relativistic Pauli Hamiltonian, (ii) super-conformal quantum system, and (iii) supersymmetric Calogero-type models admitting entirely real spectra are presented. © 2011 IOP Publishing Ltd.

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