http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5535 2026-04-17T12:04:46Z 2026-04-17T12:04:46Z Bamigboye, Mercy O. Ejidike, Ikechukwu P. Obaleye, Joshua A. Lawal, Misitura http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5558 2021-04-08T21:00:30Z 2021-01-18T00:00:00Z

Synthesis, Characterization and Biological Activity of Mixed hydroxyl Bamigboye, Mercy O.; Ejidike, Ikechukwu P.; Obaleye, Joshua A.; Lawal, Misitura A series of new mixed anthranilic acid – ethambutol complexes [Co(ETB)(Ant)Cl2] (1), [Cd(ETB)(Ant)Cl2] (2), and [Cu(ETB)(Ant)Cl2] (3) where ETB= Ethambutol and Ant= Anthranilic acid, were synthesized by refluxing method and characterized using spectroscopic techniques such as infrared and ultraviolet/visible, elemental analysis, conductivity measurement and magnetic susceptibility. The ligands act as bidentate type coordinating to the central metal ion through the oxygen of the hydroxyl group and nitrogen of the amine group. Octahedral, square planar and tetrahedral geometry has been assigned to the Co(II), Cd(II) and Cu(II) complexes respectively. Towards the in vitro biological potentials, the ligands and the metal complexes were screened for antibacterial, antioxidant and antitubercular activities. The complexes were found to have an increased activity compared to their free parent ligands. This research work concluded that the mixed metal complexes of anthranilic acid – ethambutol showed promising activity against the selected organisms and as such exhibit candidates for the treatment of ailments.

2021-01-18T00:00:00Z Khatun, Mst. Murshida Akter, Sharmin Jahan, Nusrat http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5541 2021-03-31T21:00:33Z 2021-01-18T00:00:00Z

Statistical Analysis on Garments Finishing Process for Minimization of Production Gap Khatun, Mst. Murshida; Akter, Sharmin; Jahan, Nusrat This article represents the statistical analysis of the knit garments finishing process. In this work, quality check report of a Knit T-Shirt was analyzed for 7 days by SPSS analysis to find out the alter percentage of total quality passes of 7 line knit garments. After analysis, it is found that the alter percentage from day 1 to day 7 is 5.78, 7.26, 6.38, 6.60, 6.07, 5.99, 5.44 accordingly. The analysis is carried out in 95% tolerance limit. This research helps to get an idea about correlation between quality control (QC) pass and alter garments percentage. Through continuous analysis manufacturer will be able to find out the optimum workload of worker in finishing section as well as find out the reason of production gap.

2021-01-18T00:00:00Z Mumtaz, Mardia Shahriar, K.M Bipul Barua, Saurav http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5540 2021-03-31T21:00:32Z 2021-01-18T00:00:00Z

Characterization of High Plastic Clay Under Varying Proportion Ordinary Portland Cement for Soil-cement Stabilization Mumtaz, Mardia; Shahriar, K.M Bipul; Barua, Saurav The study investigates the influence of varying proportion of Ordinary Portland Cement (OPC) in high plastic clay soil while soil-cement stabilization of road embankment. Since, high plastic clay is unsuitable as subbase material of road embankment, our study provided as a guideline for the mixing ratios of OPC in soil-cement stabilization in this regard. Unconfined compressive strength (UCS) of soil samples were increased significantly with the addition of OPC to the soil. Optimum moisture content increased with higher percentage of cement added to soil. Besides, UCS of soil-cement mixture were improved with the increase of curing period. On contrary, increasing %OPC in soil-cement stabilization is costly. The test results recommended that the addition of 10% cement was sufficient enough to gain adequate UCS within 1- day curing.

2021-01-18T00:00:00Z Barua, Saurav Khan, Mohammad Hannan Mahmud Akhter-Uz-Zaman, Md. http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/5539 2021-03-31T21:00:31Z 2021-01-18T00:00:00Z

Time Dependent Route Selection for Courier Vehicle Using Ant Colony Optimization Barua, Saurav; Khan, Mohammad Hannan Mahmud; Akhter-Uz-Zaman, Md. The study delves to estimate the fastest route for courier vehicle routing in Dhaka city for different times of a day. It identifies the fastest route through Ant Colony Optimization (ACO) considering real time traffic scenarios. ACO mimics forging behavior of ant colonies to search for the route among various paths which requires minimum travel time. The study road network comprises with five locations, i.e. nodes which are interconnected with links i.e. roads. Travel time requires for each link are estimated and total travel time requires for different routes under four times of a day, such as, morning, afternoon, evening and night time are estimated. The result shows that optimized route obtained by ACO can decrease travel time by 6.12% to 18.37% and delay by 13.64% to 40.91% compare to those of actual route. Night time (7:00-10:00PM) trip requires the lowest travel time and less delay compare to other times of a day, and hence, courier vehicle routing should be scheduled accordingly. The proposed technique in this study can be incorporated with large scale transportation route planning and scheduling.

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