Tamlūk, India
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Majumdar D.,Tamralipta Mahavidyalaya | Surendra Babu M.S.,Gandhi Institute of Technology and Management | Das S.,Circle Technology | Biswas J.K.,Kalyani University | And 2 more authors.
Journal of Molecular Structure | Year: 2017

A unique thiocyanato linked 1D chain of Zn(II) coordination polymer [Zn2L1(μ1,3-SCN)(η1SCN)]n (1) has been synthesized using potential multisite compartmental N,O donor Schiff base blocker ligand (L1H2) in presence of Zn(OAc)2 and KSCN. The Schiff base ligand [N, N′-bis(3-methoxysalicylidenimino)-1,3-daminopropane] (L1H2) is 2:1 M ratio condensation product of O-vaniline and 1,3-diaminopropane in methanol medium. The characterization of Complex 1 was accomplished by means of different micro analytical techniques like elemental analyses, IR, UV–Vis, 1H NMR, emission spectroscopy and Single X-ray crystallographic study. Complex 1 crystallizes in Orthorhombic system, space group Pbca, with values a = 11.579(2), b = 18.538(3), and c = 22.160(4) Å; α = β = γ = 90.00°; V = 4756.6(14) and Z = 8. The single crystal X-ray revealed that the one dimensional chain system with the repeating unit [Zn2(μ1,3-SCN)(η1SCN)(L1)]n bridge by an end to end μ1,3 thiocyanate anion. Within each repeating unit two different types of Zn(II) ions are present. One of these is five-coordinate in a square pyramidal geometry while the other is six-coordinate in an octahedral geometry. A brief but lucid comparative approach has been demonstrated in between Schiff base (L1H2) and complex 1 with respect to their photoluminescence activities. Active luminescence behavior of complex 1 in presence of ligand (L1H2) is due to quenching of PET process which is mediated by ‘chelating effect’. Complex 1 exhibits strong antimicrobial efficacy against some important Gram + ve and Gram -ve bacteria. Apart from antimicrobial potential, a combined experimental and theoretical investigation has been performed via DFT on molecular structure of complex 1 with respect to Hirshfeld surface analysis. © 2017 Elsevier B.V.

Panda A.,Sonakhali Girlss High School | Das C.B.,Tamralipta Mahavidyalaya
Journal of Uncertain Systems | Year: 2014

In this paper we represent a two-vehicle cost varying transportation model. In this model the transportation cost is vary due to capacity of vehicles as well as amount of transport quantity. At first we propose an algorithm to determine unit transportation cost with initial allocation to the basic cells by North-west corner rule. Then solve it. The unit transportation cost vary during optimality test when allocations are changed. Numerical examples are presented to illustrate the two-vehicle cost varying transportation problem(TVCVTP). Finally, comparison is given to show better effective of this model. © 2014 World Academic Press, UK. All rights reserved.

Panda A.,Sonakhali Girls's High School | Das C.B.,Tamralipta Mahavidyalaya
Journal of Uncertain Systems | Year: 2015

In this paper, we focus on the problem formulation and solution procedure of the multi-objective interval transportation problem(MOITP) where the source and destination parameters are expressed as interval values by the decision maker. This problem is a cost varying multi-objective interval transporta- tion problem(CVMOITP). The intervals cost coefficients of the objective functions of this problem are determined by fixed single trip transportation costs of vehicles. After that, this problem is converted into a classical multi-objective transportation problem(MOTP) where to minimize the interval objective function, the order relations that represent the decision marker's preference between interval is defined by the right limit, centre and half-width of an interval. Finally, the equivalent transformed problem is solved by Zimmerman's fuzzy programming technique. © 2015 World Academic Press, UK. All rights reserved.

Sarkar S.,Haldia Institute of Technology | Patra S.,Haldia Institute of Technology | Bera S.K.,Tamralipta Mahavidyalaya | Paul G.K.,Jalpaiguri Government Engineering College | Ghosh R.,Indian Central Mechanical Engineering Research Institute
Physica E: Low-Dimensional Systems and Nanostructures | Year: 2012

We report on the rectifying behavior of sol-gel synthesized Al (1 and 3 at):ZnO/Si (N-n) thin film isotype heterojunctions. The films were dense and uniform over the substrate and show polycrystalline morphology with defined grain boundaries. The current-voltage (I-V) characteristics of the junctions at room temperature and high temperature in air ambient were found to be asymmetric with an increase in rectification ratio (I f/I r) from 1.29 to 3.70 for 1 at and from 0.60 to 2.54 for 3 at of Al (at a bias voltage of 5 V) for increase in temperature upto 150 °C. The I-V characteristics of the junctions were explained on the basis of high temperature carrier injection and single carrier dynamics. © 2012 Elsevier B.V.

Das C.B.,Tamralipta Mahavidyalaya | Roy S.K.,Vidyasagar University
International Journal of Uncertainty, Fuzziness and Knowlege-Based Systems | Year: 2010

In this paper, we propose a new mathematical model to analyze bimatrix goal game under entropy environment. This new approach incorporates the entropy function of the players as an objective to the bimatrix game. The solution concepts behind this game are based on getting the probability to achieve some specified goals. We consider the solution, not only by the payoff values, but also by the probability to get them. Numerical examples are presented to illustrate the methodology in the paper. © 2010 World Scientific Publishing Company.

Goswami S.,Global Group Of Institutions | Das C.B.,Tamralipta Mahavidyalaya
Journal of Uncertain Systems | Year: 2016

The growing use of IP devices in portable applications has created the demand for mobility support for entire networks of IP devices. Network Mobility solves this problem by extending Mobile IP. The protocol is an extension of Mobile IPv6 and allows session continuity for every node in the mobile network as the network moves. The Mobile Router, which connects the network to the Internet, runs the Network Mobility Basic Support protocol with its Home Agent. The protocol is designed so that network mobility is transparent to the nodes inside the mobile network. This paper targets to analyze network mobility issues and requirements. The aim is to explore the idea of route optimization in Network mobility. We classify the schemes established on the basic method for route optimization, and equal the schemes based on protocol overhead, such as header overhead, amount of signaling, and memory requirements. After discussing the need of route optimization in Network mobility, different solutions provided so far are discussed and analyzed. Lastly the performance of the classes of different schemes has to be estimated under norms such as available bandwidth, topology of the mobile network and mobility type. All these issues are explained to provide a future scope of studies in this field. © 2016 World Academic Press, UK. All rights reserved.

Das C.B.,Tamralipta Mahavidyalaya | Roy S.K.,Vidyasagar University
OPSEARCH | Year: 2013

Here, we propose a mathematical model to analyze the multi-objective bimatrix game under entropy environment. In this new approach, the entropy function of each player is considered as an objective to the multi-objective bimatrix game. This model is named as multi-objective entropy bimatrix game model. The formulated model is a multi-objective non-linear programming problem. To solve this model, we have introduced a solution procedure, which determines the feasibility of multi-objective non-linear programming problem using fuzzy programming approach and revised Genetic Algorithm (GA). By a real coded GA we have obtained the bounds of the objectives of the said model. Then we have determined the solutions of our proposed model. Finally, numerical examples are presented to illustrate the methodology. © 2012 Operational Research Society of India.

Sarkar S.,Haldia Institute of Technology | Patra S.,Haldia Institute of Technology | Bera S.K.,Tamralipta Mahavidyalaya | Paul G.K.,Haldia Institute of Technology | Ghosh R.,Haldia Institute of Technology
Materials Letters | Year: 2010

The authors report on the water repellent properties of quasialigned zinc oxide (ZnO) nanowire arrays grown by low-temperature solvothermal technique. The uniform and dense ZnO nanowires of average diameter ∼ 75 nm have been found to have hexagonal wurtzite type structure. The as synthesized ZnO nanowire surfaces have hydrophilic nature with a water contact angle of 73° ± 3°. The superhydrophobic behavior with a water contact angle of 145° ± 3° of the nanowire arrays has been realized due to the reduction of surface free energy after being coated with an octadecyltrichlorosilane (OTS) monolayer. This work may be of huge importance from the viewpoint of both the understanding of the mechanisms involved and industrial applications. © 2009 Elsevier B.V. All rights reserved.

Mandal M.,Tamralipta Mahavidyalaya | Majumdar D.,Tamralipta Mahavidyalaya
Radiochemistry | Year: 2015

A radiotracer technique has been used to achieve the separation of micro quantities of Ag(I) from nitric acid solution using a chromatographic column packed with TODGA-impregnated silica gel. Adsorption of spiked silver on such a column was studied at different acid concentrations and different temperatures. Effects of diverse ions in the adsorption process were also studied. The sorption is adequately described by the classical Freundlich adsorption isotherm over the concentration range from 4 × 10-4 to 60 × 10-4 M. © 2015 Pleiades Publishing, Inc.

Roy S.K.,Vidyasagar University | Das C.B.,Tamralipta Mahavidyalaya
Journal of Uncertain Systems | Year: 2013

This paper analyzes the multicriteria bimatrix goal game under the light of entropy environment. In this approach, the entropy functions of the players are considered as objectives to the bimatrix game. The solution concepts behind this game are based on getting the probability to achieve some specified goals by determining G-goal security strategies (GGSS). We deffne the real coded Genetic Algorithm (GA) to obtain the bounds of the objectives of the proposed game. Then formulated model is solved by fuzzy programming technique. Finally a numerical example is included to illustrate the methodology. © 2013 World Academic Press, UK. All rights reserved.

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