Department of Mathematics and Natural Sciences (MNS): Recent submissions
Now showing items 621-640 of 687
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Characterization of phytoconstituents, in vitro antioxidant activity and pharmacological investigation of the root extract of typhonium trilobatum
(BRAC University, 2015-08-25)In the present study, the phytochemical screening, in vitro antioxidant activity, thrombolytic activity, membrane stabilizing activity, acute toxicity and anti-depressant activity were evaluated using Forced Swimming Test ... -
Antibacterial resistance: A comparative study between clinical and environmental isolates based on whole cell protein profiling by SDS-PAGE
(BRAC University, 2015-08)This study of comparison was conducted to examine the existence of antibiotic resistant and sensitive bacteria in various environmental samples of Bangladesh with specific clinical strain obtained from ICDDR,B. From the ... -
Studies on isolation of yeasts from natural sources for bioethanol production from vegetable peels and the role of cellulose degrading bacteria (Bacillus subtilis) on ethanol production
(BRAC University, 2015-08)The requirement of an alternative clean energy source is increasing with the elevating energy demand of modern age. Microbial production of bioethanol can replace the conventional fossil fuel with green energy. In this ... -
Development of improved quality Yogurt in terms of texture, flavor, food value and low cost
(BRAC University, 2015-03-14)The present study is concerned with how to develop improved quality yogurt in terms of texture, flavor, food value and low cost. Natural flora and traditional flavor in yogurt of indigenous varieties have been continuously ... -
Isolation of shiga toxin producing Escherichia coli O157:H7 from Bovine samples of Dhaka, Bangladesh
(BRAC University, 2015-04)Shiga toxin producing Escherichia coli (STEC) have recently emerged as important food-borne pathogens especially serotype O157:H7. Human diseases ranging from mild diarrhea to hemorrhagic colitis, hemolytic uremic syndrome ... -
Antibacterial resistance : a comparative study between clinical and environmental isolates
(BRAC University, 2015-04)This comparative study was carried out to investigate the presence of antibiotic sensitive and resistant bacteria in different environmental samples of Bangladesh with specific clinical strain obtained from ICDDR, B .The ... -
Isolation and study of the optimum growth conditions of diesel degrading bacteria from soil
(BRAC University, 2015-04)The rise in industrialization and globalization has made oil spills an environmental threat all over the world. Bioremediation can be considered as an effective aid to the clean-up process of spilled oil aside from expensive ... -
Isolation of Kerosene degrading bacteria from soli samples and determination of optimum growth conditions
(BRAC University, 2015-04)Oil spills are global catastrophes transpiring annually from minute to substantial amounts, threatening the lives of plants, animals and the health of human. Current physical and chemical management systems are very costly ... -
Immune response to shiga toxin producing Escherichia coli : detection of antibodies against outer membrane proteins of the bacteria in healthy population of Bangladesh
(BRAC University, 2015-04)Escherichia coli O157:H7, a serotype of Shiga toxin producing E. coli (STEC) is responsible for numerous food and waterborne outbreaks more reported in industrialized countries than from developing countries. Until recently, ... -
Isolation of Shiga toxin producing Escherichia coli 0157:H7 from street food and raw vegetables in Dhaka city
(BRAC University, 2015-04)E. coli O157:H7, a Shiga toxin producing microbe was first acknowledged as a virulent organism in 1982 during an analysis of an outbreak of haemorrhagic colitis associated with consumption of hamburgers from a fast food ... -
Study on SOD1 GENE +35A>C polymorphism in impaired glucose regulation patients of Bangladeshi origin
(BRAC University, 2014-07)Superoxide dismutase 1 (SOD1), located at the cytosol has been postulated to represent between 50%-80% of the total SOD activity. The SOD gene is located at 21q22.1. Polymorphisms in the genes encoding these enzymes found ... -
Optimization of alkaline protease production by Bacillus licheniformis MZK05M9 in batch culture using response surface methodology
(BRAC University, 2014-09)Bacterial alkaline protease has got its particular eco friendly technical applications in leather processing, detergent and feathers digestion to feed in Bangladesh. The present study is aimed at the optimization of major ... -
Evaluation of the antioxidant and in vitro cytotoxic activity of Averrhoa carambola, Aegle marmelos and Spondias pinnata leaf extracts
(BRAC University, 2015-04)Three typically grown Bangladeshi fruit trees, Averrhoa carambola L, Spondias pinnata and Aegle marmelos possess various therapeutically important properties and their different parts have been experimented for antioxidant ... -
Association of comorbidities with the survival of non small cell lung cancer
(BRAC University, 2014-12-01)Lung cancer constitutes the major mortality in the world and incidence of the disease varies considerably among different ethnic population throughout the world. Palliative chemotherapy has been a choice in advance ... -
Development of a cost effective medium for enhanced production of Bacillus thuringiensis δ-endotoxin
(BRAC University, 2014-10)The control of pest populations by using bacteria as insect pathogens has been an attractive alternative to the application of chemical pesticides. As chemicals cause damage to the environment, biological control is ... -
In vitro culture establishment from Cotyledon and Embryonic Axis Explants of two Bangladeshi Sunflower (Helianthus annus L.) varieties
(BRAC University, 2015-03)Sunflower is considered as source of cholesterol free edible oil. Because of cross pollinating nature of this plant, it is difficult to identify true breeding homozygous line, thus, breeding becomes intricate. Besides, ... -
IN VITRO culture establishment from hypocotyl and cotyledon explants of two Bangladeshi sunflower (Helianthus annuus L. ) varieties
(BRAC University, 2015-03)Sunflower (Helianthus annuus.L) is the world’s second most important oilseed crop. Plant tissue culture and gene transformation are the important tools for improvement of this crop. The purposes of this study are to optimize ... -
'O antigenic' polysaccharide specific memory B cell responses in Bangladeshi Cholera patients infected with Vibrio cholerae O1
(BRAC University, 2015-03)Cholera, caused by Vibrio cholerae O1/O139, is an acute dehydrating enteric disease with high mortality rate if untreated. Several efforts have been made to develop effective vaccines, and effort is still continuing. The ... -
Optical characterisation of single junction monocrytalline silicon solar cell
(BRAC University, 2015-01)In this paper the character of a solar cell in terms of minority carrier diffusion length through surface photovoltage (SPV) technique is studied. SPV is measured with respect to wavelength where the spectral range is ... -
The vela pulsar and its behavioural variance
(BRAC University, 2015-01)This study includes detailed exploration of Vela pulsar magnetosphere and glitches—including recent studies that compare Vela pulsar with other pulsars such as: PSR B0329+54, an optical pulsar (the Crab pulsar, PSR B0531+21), ...