http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/9746 2026-04-27T00:31:46Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/9828 Study on the Dyeing Performances of Jute Fabrics Dyed with Extracted Natural Dyes from Jackfruit Leaf and Teak Leaf Islam, Ariful; Iqbal, Asib; Khatun, Mahmuda; Sultana, Nayer Firstly, used hydrogen peroxide in traditional method for Scouring and bleaching process. Then for grey jute fabrics are dyed by individually natural colors which was extracted from jackfruit and teak leaves. After that, lighter shade is being obtained without any adding mordant and then observed that amount of dye taking up being increased with increasing percentage of mordant. The color output was enhanced by mordanting potash Alum. We know small entrepreneurs’ craftsmen are very much interested to make some aesthetic products by jute fibre and fabric as since as those are being lucrative in small cottage, nest, sandal etc. by jute fibre and fabric. So here color fastness is much necessary and color fastness work are compared between teak leafs and jackfruits leafs. 2023-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/9766 An Implementation of Sustainable Solar Powered Mosquito Trap Device Ahmad, Kanij; Arefin, Shamsul Mosquito control is an ongoing problem that must be constantly monitored and achieved. This is due to the creature's ability to transmit a variety of deadly diseases, and mosquitoes kill one million people each vear. Traditional insecticide and bug zapper prevention methods are ineffective and have an adverse effect on the environment in a diverse range of ways, including the extinction of beneficial insects, mosquito biological evolution, and climate change. A solar-powered mosquito trap is developed in this study to attract mosquitos into the trap by sucking them toward a shock net while they are drawn to an SMD LED light. 0023-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/9765 Preference on Quality Dimensions when Purchasing Undergarments: A Case Study of Dhaka City in Bangladesh Chowdhury, Tanvir Ahmed; Rahman, Md. Mominur; Hossain, Alamgir; Majumder, S.M. Mahbub Ul Haque The Bangladeshi garments manufacturers are emphasizing on local market besides exporting with reputation. Undergarments are a very common product for both male and female. The main objective of this study was to find out the perception of consumers of Dhaka city while buying undergarments. Specifically, this study tried to discover the impact of gender and age group of customers on dimensions of quality during purchasing undergarments in Dhaka city, Bangladesh. To conduct this work, Dhaka city was divided into two parts-DNCC and DSCC. A total 766 male and 750 female customers were interviewed faceto- face perfectly. To get the desired objectives of this study, logistic regression analysis was done. It was found that about 75% of female customer prefers fiber type, hand feel and outer appearance. Again, about 80% male favor fiber type and hand feel like female but unlike female they prefer elasticity instead of outer appearance. Most of the customers of aged 12 to 18 years prefer hand feel, outer appearance and elasticity whereas greater share of age group (19 to 30) years, (31 to 50) years and above 50 years prefer fiber type instead of outer appearance although the percentages of customer are different in choosing the mentioned aspects of quality. This study discovered that the preferences to dimensions of quality differ not only among genders but also among customers of different ages. As a result, manufacturers should take it into consideration while producing undergarments. 0023-01-01T00:00:00Z http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/9764 Shehu Transform Homotopy Analysis Method for the Solution of Nonlinear Initial Value Ordinary and Partial Differential Equations Yisa, B. M.; Baruwa, M. A. In this paper, we propose a method of solution for both nonlinear Ordinary Differential Equations (ODEs) and Partial Differential Equations (PDEs). Shehu Transform is combined with Homotopy Analysis Method (HAM) to handle both homogeneous and nonhomogeneous problems in the family of differential equations considered. The properties of homotopy derivatives are exploited while handling the nonlinear terms encountered. Several examples are solved using HAM and the Shehu Transform Homotopy Analysis Method (STHAM) proposed in this work, and the effectiveness of the proposed method is obvious in terms of reduction in the volume of computations and time. All computations are carried out with the aid of Mathematica 12.0. 0023-01-01T00:00:00Z