Jessore University of Science & Technology

About: Jessore University of Science & Technology is a based out in . It is known for research contribution in the topics: Adsorption & Population. The organization has 811 authors who have published 974 publications receiving 10471 citations.

Performance Evaluation of Multi-layer Barriers for Machine-Induced Low-Frequency Noise Attenuation

Abstract: In this work, the performance of different multi-layer barrier constructions in attenuating noise has been studied experimentally. Machine-induced low-frequency noise within the frequency range of 100–500 Hz is focused in this work. Six different multi-layer barrier constructions have been employed for this purpose. Wood has been used as the rigid, reflective layer while glass wool and PE foam has been used as the soft, absorbing layers. An enclosure with five fixed walls and one flexible wall containing the noise barrier has been constructed to perform the experiments. A CASELLA CEL-62X Sound Pressure Level meter has been used to measure sound pressure at different frequencies. Results indicate that the transmission losses are not higher than 18 dB for the frequency range of interest. Results also reveal that triple-layer wooden barrier has superior performance in attenuating low-frequency noise although sandwich barriers are more suitable for higher frequencies.

Bioequivalence Assessment of Metformin Tablet Formulations of Bangladesh

Abstract: Six marketed oral antidiabetic metformin tablets in Bangladesh have been studied for their drug content, release profile and glucose lowering capacities This sort of study is a good indicator for in vivo evaluation of the quality of an oral antidiabetic preparation Marketed preparations of metformin-HCl from different manufacturers were randomly chosen for this study The drug content was within the United State Pharmacopoeia (USP) specified limit (95-105%) in all cases The blood glucose levels were investigated in streptozotocin-induced diabetic rats (SIDRs) after 5 hours of single dose (110 mg/kg body weight) treatment of the products; significantly ( p <005) reduced blood glucose level by 581, 532, 508, 770, 729 and 491%, respectively; which were consistent with antihyperglycemic effects of standard metformin-HCl (713%) All the products were found to be qualified in lowering blood glucose level It may be inferred that the metformin-HCl tablets of Bangladeshi manufacturers complies with the standard specifications for drug contents, dissolution and antihyperglycemic properties © 2014 JSR Publications ISSN: 2070-0237 (Print); 2070-0245 (Online) All rights reserved doi: http://dxdoiorg/103329/jsrv6i319290 J Sci Res 6 (3), 581-588 (2014)

A Study on Rain Water Harvesting and Comparative Cost Analysis with Withdrawal of Underground Water around Gazipur City

Abstract: Rain water harvesting is a technology used to supply water for domestic purposes in developing countries. During dry weather, dust and other pollutants accumulate on the roof surface and are washed off at the beginning of the next rain. The initial contaminated volume of water flowing from a roof after a rain storm is known as the first flush and research has shown that diverting it from the main supply can improve the quality of stored water. An integrated planning for Rooftop Rain Water Harvesting system for different institutes in the premises an educational complex is done. The main objectives of the study are to estimate the roof top rain water harvesting potential and comparative cost analysis with withdrawal underground water. J. Environ. Sci. & Natural Resources, 8(1): 91-94 2015

Improvement of Electric Heater Design for Household Cooking Application in Developing Countries

Abstract: In this experimental study, the possibility of improvement of conventional electric heater to reduce energy loss has been investigated. In order to do so, a modified electric heater construction has been employed, one covered with glass wool insulation. The temperature profile inside the heater has been measured both in vertical and radial direction with the help of K-type thermocouples. Three different food items, namely, Water, Minicate Rice, and Red Lentil, have been used to test the performance of the modified insulated heater compared to the conventional one. Results indicate that it is possible to save energy up to 43.9%, 32%, and 23.08% for the above-mentioned three food items, respectively, by using the insulated heater. However, inconsistency in the amount of energy-saving is observed. It has also been observed that the energy-saving for boiling water increases with increasing amount of water, suggesting that the insulated heater is more efficient for higher cooking volume compared to the conventional one.