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Bordoloi M.,CSIR - Central Electrochemical Research Institute | Bordoloi P.K.,CSIR - Central Electrochemical Research Institute | Bordoloi P.K.,Jorhat Institute of Science and Technology | Dutta P.P.,CSIR - Central Electrochemical Research Institute | And 7 more authors.
Journal of Functional Foods

Twelve classical edible herbs of Assam were studied, among which, Fagopyrum esculentum, Paederia scandens and Amaranthus viridis showed strong antioxidant potential with high phenolic contents. Rutin and gallic acids were the most abundant phenolic compounds. α-Tocopherol was present in all herbs, while ascorbic acid was found only in some. Leucas aspera and Hydrocotyle sibthorpioides were good sources of both α-tocopherol and ascorbic acid. All twelve herbs were devoid of Pb and Cd. Pouzolzia indica was a rich source of Ca, Fe and Zn. Further, the plants were found to be moderately active against mycotoxin producing fungus Alternaria tenuissima. © 2016 Elsevier Ltd. Source

Bhuyan S.I.,University of Science and Technology, Meghalaya | Tripathi O.P.,North Eastern Regional Institute of Science and Technology | Khan M.L.,Dr Hari Singh Gour University
Journal of Tropical Agriculture

N-mineralization, nitrification and ammonification rates were studied in the major land use patterns viz., Jhum, agroforestry, vegetable and millet agro-ecosystems (AES) in East Siang district of Arunachal Pradesh, north-east India. Study was conducted for an annual cycle from June 2011 to May 2012 following standard methodology. N-mineralization showed significant variations between the sites and seasons. Greater amount of N-mineralization was recorded during the rainy season for agroforestry, and winter season for Jhum, vegetable and millet AES. Lowest mineralization rates were found during the spring for Jhum AES and during the rainy season for millet and vegetable AES. Ammonification rate was positively correlated with soil pH, soil organic carbon, NH4 +-N and NO3 --N whereas, nitrification rate was negatively correlated with ammonium and nitrate concentrations which suggest that available nitrogen concentration was not saturated in these systems. © 2014 Kerala Agricultural University. All Rights reserved. Source

Mondal S.K.,University of Science and Technology, Meghalaya | Tahbildar H.,Assam Engineering Institute
International Journal of Software Engineering and its Applications

Regression testing remains one of the most laborious and costly software testing activities in software maintenance. Its laboriousness and costing increases with increasing number of test suits: need to changed re-testing strategy. The strategy should identify and eliminate redundant test cases in order to minimize the test cases from test suites. The aim of regression testing is to reduce the retesting effort and achieve the adequate testing coverage. An important research problem, in this context, is the new developed algorithm is needed to reduce the retesting effort, cost and time without disturbance of thoroughness. The traditional optimal page replacement algorithm is used for managing the virtual memory. Our approach has been showing that the novel optimal page replacement algorithm reducing the redundant test cases during retesting of modified object oriented program. Our testing approach is on unit level. The logic based transitive relationship model achieves the adequate testing coverage to the modified object oriented program. Hybridization of clock page replacement-counting based algorithm is used for making the logic based transition relationship model. An Illustrative example has been presented to establish the effectiveness of our methodology coupled with logic based transitive relationship model. © 2014 SERSC. Source

Kulshrestha M.J.,National Physical Laboratory India | Singh R.,National Physical Laboratory India | Duarah R.,CSIR - Central Electrochemical Research Institute | Rao P.G.,CSIR - Central Electrochemical Research Institute | Rao P.G.,University of Science and Technology, Meghalaya
International Journal of Environmental Studies

A total of 42 rain water samples were collected for a period of one year, March 2005 to February 2006, at Jorhat, a rural site of North-East India. The pH of the samples varied from 4.1 to 7.1 with a mean 5.5 showing the acidic nature of rainwater with reference to 5.6 (natural pH of rain water due to CO2 equilibrium in the atmosphere). More than 50% of the rain events have been found to be acidic. Mean concentrations of major ions in the rain water followed the order SO > Ca2+ > NH > NO > PO > H+ > HCO > Na+ > Mg2+ > Cl- > K+ > F-. Ca2+, NH and Mg2+ have shown a neutralization factor less than 1, indicating partial neutralization of anions. EFSoil indicated that soil plays a major role in rain water composition. Maximum concentration for most of the ionic species has been observed during winter followed by summer, post-monsoon and monsoon periods, respectively. Occurrence of acid rain events has been observed throughout the year suggesting that the soil is acidic. © 2014 © 2014 Taylor & Francis. Source

Mondal S.K.,University of Science and Technology, Meghalaya | Tahbildar H.,Assam Engineering Institute
Lecture Notes in Electrical Engineering

Large library-based regression test cases minimization technique for object-oriented programs has been depicted in this paper. These works have been carried out in three steps. In the first step, the original program is instrumented and executed with test cases. Library is made on the basis of these test cases, coverage of codes, and then the program is modified. In the second step, the modified program is analyzed by latent semantic analysis. It is making the latent semantic matches automatically between users given values and linear combination of its small text objects or variables or database of the software. Therefore, modified code is recorded by latent semantic analysis. Data flow sensitivity and context sensitivity are used for statically and dynamically analyzing the affected and unaffected objects along with the recorded modified codes. After precision data flow analysis, test cases are generated from affected objects with same test cases coverage and affected objects with new test cases coverage. Therefore, redundant test cases are reduced by new opti- mal page replacement algorithm and updated the library along with code coverage records. In the third step, the test cases of former and modified program are collected and sent to the test cases repository. Now the new optimal page replacement algorithm is implemented on the test cases repository and reduced the regression test suites. An Illustrative example has been presented to establish the effectiveness of our methodology. © Springer India 2015. Source

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