Techno India University

Kolkata, India

Techno India University

Kolkata, India
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Mukherjee P.,Techno India University | Roychowdhury R.,Techno India University | Roy M.,Techno India University
Clean Technologies and Environmental Policy | Year: 2017

Kans grass (Saccharum spontaneum) is a weed species that is frequently found in many heavy metal-enriched waste dumps including fly ash pond sites. In this study, among a collection of phosphate-solubilizing bacterial strains isolated from the rhizosphere of Saccharum spontaneum present in the abandoned ash pond site of Mejia Thermal Power Station (MTPS-DVC), three strains were characterized for their plant growth-promoting abilities. The isolates identified as Bacillus anthracis strain MHR2, Staphylococcus sp. strain MHR3 and Bacillus sp. strain MHR4 had phosphate solubilization indices of 2.86, 2.31 and 2.40 and they produced soluble phosphates of 700, 600 and 640 mg l−1, respectively, in 4 days. In all the PSBs, pH significantly decreased, indicating the production of various organic acids. They showed other plant growth-promoting features like production of ammonia, siderophore, hydrocyanide and IAA. All of them were resistant to multiple heavy metals and antibiotics. Dry and fresh weight and shoot and root lengths of Brassica juncea L. increased in the presence of these isolates in pot cultures. The strains also increased phytoextraction ability of plants by enhancing the metal accumulation in plant tissues. Thus, the isolated indigenous and stress-adapted rhizobacteria may serve as potential biotechnological tool for the successful ecorestoration of various metal-contaminated sites. © 2017 Springer-Verlag Berlin Heidelberg

Roy K.,Techno India University | Kumar Bairagi A.,Civil Engineering
Asian Journal of Civil Engineering | Year: 2016

This paper presents the study on wind pressure, velocity and force coefficient analysis done in ANSYS software using CFD simulation (k-ε model) for stepped unsymmetrical plan shape tall building for a wind incidence angle ranging from 0° to 360° with an interval of 45° in the ratio of 1:300. The study aims at establishing the similarity between the codes like IS 875-(PART 3)(1987), AS/NZS: 1170.2 (2011), ASCE: 7-02 (2002), and the experimental rectangular model. The flow patterns around the building are considered for different heights and for different wind angles which help to understand the difference in pressure variation for designing purpose of the building.

Roy D.,Techno India University
Foundations and Frontiers in Computer, Communication and Electrical Engineering - Proceedings of the 3rd International Conference on Foundations and Frontiers in Computer, Communication and Electrical Engineering, C2E2 - 2016 | Year: 2016

The difference in Single objective and multi-objective optimizations is primarily in the car-dinality in the optimal set; from a practical standpoint a user needs only one solution, no matter whether the associated optimization problem is single-objective or multi-objective. A multi-objective optimization problem can be converted into a single-objective optimization problem by the method of scalarizing an objective vector into a single composite objective function. This procedure of handling multi-objective optimization problems called Predilection Based MOO and is much simpler, yet still being more subjective than the any other procedure. In the evolutionary approaches the most popular methods are by evolutionary or genetic algorithms. This paper has proposed a new method for deriving Pareto Optimal Front by use of Neural Network. The algorithm has been presented here. A numerical experiment has also been performed to validate the algorithm. © 2016 Taylor & Francis Group, London.

Das P.,Techno India University | Dasgupta T.,Jadavpur University | Bhattacharya S.,Jadavpur University
Proceedings - 2016 2nd IEEE International Conference on Research in Computational Intelligence and Communication Networks, ICRCICN 2016 | Year: 2016

The present work demonstrates a novel scheme for recognising Bengali handwritten consonants by exploring the primitive set of strokes that construct the characters. The Bengali consonants are first manually analysed in order to decompose them into their constituent pattern primitives. Once an exhaustive list of such primitives are prepared, a scheme based on mathematical morphology is devised to identify their existence in the scanned images of the handwritten characters. The characters are identified on the basis of the detected set of primitives. Although, the scheme involves multiple iterations, it runs reasonably fast and doesn't require any kind of training. © 2016 IEEE.

Maity S.,Jadavpur University | Rakshit S.,Techno India University | Das S.,Jadavpur University | Chatterjee K.,Techno India University
AIP Conference Proceedings | Year: 2017

Nanostructured polyaniline doped with organic dopant has been synthesized employing a template based in-situ polymerization. Spectral analysis of the sample shows a more ordered structure. The transport properties are carried out for thermoelectric applications which shows that the template based synthesis plays an important role to influence the electrical transport properties of PANI. This template based synthesis of nanostructured PANI is proposed for enhancement of figure of merit through an increase in the electrical conductivity and thermoelectric power and decrease in thermal conductivity. Compared to the earlier works the figure of merit evaluated is much higher. © 2017 Author(s).

Mal B.,Techno India University | Ray S.,Jadavpur University | Shamanna J.,University of Calcutta
AIP Conference Proceedings | Year: 2017

Random deposition model with surface diffusion over several next nearest neighbours is studied. Several extensions of diffusion models to include multistep diffusion gives Family's surface diffusion model in the nearest neighbour diffusion limit. The results for the various extensions agree with the results obtained by Family for the case of nearest neighbour diffusion. However, for larger allowed diffusion length, the growth exponent and roughness exponent show interesting dependence on diffusion length. The variation of values of exponents are fitted to empirical equations. The probable mechanism for dependence of exponents on the diffusion length is discussed. © 2017 Author(s).

Mondal A.,Saha Institute of Nuclear Physics | Adhikari S.,Techno India University | Basu C.,Saha Institute of Nuclear Physics
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics | Year: 2017

The angular distribution of the 12C(Li6,d) reaction populating the 6.92 and 7.12 MeV states of 16O at sub-Coulomb energy (E=cm3 MeV) are analysed in the framework of the Distorted Wave Born Approximation (DWBA). Recent results on excitation function measurements and backward angle angular distributions derive ANC for both the states on the basis of an alpha transfer mechanism. In the present work, we show that considering both forward and backward angle data in the analysis, the 7.12 MeV state at sub-Coulomb energy is populated from Compound nuclear process rather than transfer process. The 6.92 MeV state is however produced from direct reaction mechanism. © 2017 The Authors

Das P.,Techno India University | Dasgupta T.,Jadavpur University | Bhattacharya S.,Jadavpur University
Advances in Intelligent Systems and Computing | Year: 2018

The present paper describes the development of a novel scheme for recognising Bengali handwritten vowels using mathematical morphology where the characters are first categorised on the basis of their anatomical features. The scanned images of the characters are passed through a weighted decision tree which is designed to analyse the feature set present in them. Based on the detected features, the algorithms easily recognise the individual characters. The extraction of some features has been carried out by generating the curvature scale spaces for the characters. The treatment is performed on scanned binary images of the handwritten characters to detect anatomical features such as ‘bowl’, ‘lobe’ and ‘arm’. The scheme developed here is very fast and it does not need training samples to work. © Springer Nature Singapore Pte Ltd. 2018.

Ghosh R.,Jogesh Chandra Chaudhury College | Mitra A.,Techno India University
Indian Journal of Geo-Marine Sciences | Year: 2015

The biochemical composition of salt marsh grass, Porteresia coarctata was investigated in this present study along with subsequent analysis of relevant physico-chemical variables. In this study, the relationship between the nutritive components of the species and the ambient environmental parameters was established. P. coarctata collected from regions of high salinity showed significant decrease in protein content. © 2015, National Institute of Science Communication and Information Resources (NISCAIR). All rights reserved.

Roy M.,Techno India University | Giri A.K.,Indian Institute of Science | Dutta S.,Techno India University | Mukherjee P.,Techno India University
Environment International | Year: 2015

Arsenic (As), cited as the most hazardous substance by the U.S. Agency for Toxic Substance and Disease Registry (. ATSDR, 2005), is an ubiquitous metalloid which when ingested for prolonged periods cause extensive health effects leading to ultimate untimely death. Plants and microbes can help mitigate soil and groundwater As problem since they have evolved elaborate detoxification machineries against this toxic metalloid as a result of their coexistence with this since the origin of life on earth. Utilization of the phytoremediation and bioremediation potential of the plants and microbes, respectively, is now regarded as two innovative tools that encompass biology, geology, biotechnology and allied sciences with cutting edge applications for sustainable mitigation of As epidemic. Discovery of As hyperaccumulating plants that uptake and concentrate large amounts of this toxic metalloid in their shoots or roots offered new hope to As phytoremediation, solar power based nature's own green remediation. This review focuses on how phytoremediation and bioremediation can be merged together to form an integrated phytobial remediation which could synergistically achieve the goal of large scale removal of As from soil, sediment and groundwater and overcome the drawbacks of the either processes alone. The review also points to the feasibility of the introduction of transgenic plants and microbes that bring new hope for more efficient treatment of As. The review identifies one critical research gap on the importance of remediation of As contaminated groundwater not only for drinking purpose but also for irrigation purpose and stresses that more research should be conducted on the use of constructed wetland, one of the most suitable areas of application of phytobial remediation. Finally the review has narrowed down on different phytoinvestigation and phytodisposal methods, which constitute the most essential and the most difficult part of pilot scale and field scale applications of phytoremediation programs. © 2014 Elsevier Ltd.

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