http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/10977 2026-04-27T00:31:52Z 2026-04-27T00:31:52Z Rizv, Md. Sakhawat Hossain Haque, Md. Mahbubul Shahrior, Fahim Ferdous Majumder, Subrata Hossain, Md Farhad http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/11177 2023-10-22T21:00:59Z 2023-07-10T00:00:00Z

Estimation of Warp and Weft Crimp in Denim Fabric Using Various Methods Rizv, Md. Sakhawat Hossain; Haque, Md. Mahbubul; Shahrior, Fahim Ferdous; Majumder, Subrata; Hossain, Md Farhad For professionals working in the weaving industries worldwide, accurate estimation of warp and weft consumption is a crucial procedure. Both underestimating and overestimating have negative commercial and economic effects. The work presented here is an effort to determine the crimp percentage of denim fabric utilizing a variety of techniques, including marking, set length, and standard crimp tester methods. The investigation was place at a denim weaving facility close to Dhaka, Bangladesh. In this regard, the crimp percentage of denim fabrics with various structures was examined. The set length approach appears to be the most accurate one for calculating crimp%. The study indicates that depending on the fabric construction 10% to 13% crimp is imparted on warp at grey stage, but after finishing it becomes as high as 27% to 30%. This is due to the deliberate length wise shrinkage carried out in the finishing section after weaving. The warp crimp was found to be substantially lower than the warp crimp in denim, as expected, but the completed crimp was significantly greater than the grey crimp. We discovered that warp had a lower crimp% than weft. It's because weaving maintains tension on the warp yarns. Additionally, they are better and stronger yarn than weft. So they stop extending further. Weft yarns, on the other hand, are maintained with low tension and poor quality. in order to stretch farther. Their crimp percentage is higher as a result. Keywords: Crimp percentage, warp crimp, weft crimp, methods to determine crimp, crimp in denim.

2023-07-10T00:00:00Z Islam, Md. Ariful Chowdhury, Dr. Nazmina Mia, Md. Shohel http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/11092 2023-08-31T21:00:48Z 0023-07-01T00:00:00Z

Study on Reducing Shrinkage Characteristics Through Woolenized Jute Knitted Fabric Islam, Md. Ariful; Chowdhury, Dr. Nazmina; Mia, Md. Shohel The purpose of this study was to investigate the impact of various treatments to solve the problem of considerable shrinking in jute knitted textiles. Without any treatment, jute knit materials naturally shrinks a lot. In this study, firstly 8/1 lb/spindle white tossa jute yarn was selected and a scouring process was applied. Subsequently, the jute yarns were woolenized through 23% sodium hydroxide treatment. After completing the knitting process, the woolenized jute knitted fabrics exhibited a weight of 300- 350 GSM (Grams per square meter). The data were analyzed based on stitch length, compaction, and stentering. The single jersey woolenized jute knitted fabric showed a shrinkage of 4 to 4.5 after the experiment, however, 1x1 woolenized jute knitted Lycra Rib (double jersey) fabrisc showed a more shrinkage range from 4.7 to 5. These findings demonstrate that the proposed treatment method can help reduce the shrinkage of jute knitted fabrics, making it a promising approach for achieving enhanced performance in jute knitted products. The study was conducted at the pilot plant and processing division of the Bangladesh Jute Research Institute. Keywords: Jute wool, shrinkage effect, Jute knitted fabrics, woolenisation effect .

0023-07-01T00:00:00Z Biplob, Khalid Been Md. Badruzzaman Hashim, Mohd Azman Islam, Yousuf M. Hassan, Syed Najihuddin Bin Syed Bitto, Abu Kowshir Hossain, Md. Kamrul http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/11091 2023-08-31T21:00:46Z 0023-07-01T00:00:00Z

Pivotal Factors for Online Learning in Bangladesh During COVID-19 Emergency Biplob, Khalid Been Md. Badruzzaman; Hashim, Mohd Azman; Islam, Yousuf M.; Hassan, Syed Najihuddin Bin Syed; Bitto, Abu Kowshir; Hossain, Md. Kamrul This study aims to comprehensively identify key factors influencing the acceptance of online education in Bangladesh. A sample of 198 students with prior experience in online education was surveyed using a well-designed semi-structured questionnaire, and the reliability of questionnaire was ensured through a pilot survey. The study employed factor analysis, which revealed three critical factors impacting the acceptance of online education during the COVID-19 pandemic in Bangladesh: accessibility, satisfaction, and flexibility. The analysis found that accessibility and satisfaction, represented by five items each, explained 35.75% and 42.67% of the variance, respectively, highlighting their significance in shaping students' acceptance of online education. Moreover, the dimension of flexibility, encompassing course flexibility, mental health flexibility, and internet access, proved to be a crucial factor, explaining a substantial 57.09% of the total variance. The study provides valuable insights into the factors that enhance online learning experiences for students in Bangladesh. These findings offer guidance to educators and decision-makers seeking to improve the quality and accessibility of online learning opportunities. By understanding the factors that influence student experiences with online education, institutions can devise more effective strategies to promote student learning and engagement in the online environment. Keywords: Online Education; Statistical Analysis; Accessibility; Satisfaction; Flexibility

0023-07-01T00:00:00Z Asaduzzaman, Md. Ghosh, Apu Kumar Alam, Md. Khorshed http://dspace.daffodilvarsity.edu.bd:8080/handle/123456789/10998 2023-08-02T21:00:53Z 0023-07-01T00:00:00Z

Adsorption of Co on Pt3, Pd3, Pd Doped Pt2 and Pt Doped Pd3 Clusters Asaduzzaman, Md.; Ghosh, Apu Kumar; Alam, Md. Khorshed The adsorption of carbon monoxide (CO) on nanoscale clusters is a topic of significant interest for catalytic and gas sensing applications. Quantum mechanical density functional theory (DFT) and molecular mechanics (MM) simulations were employed to investigate the interactions between carbon monoxide (CO) and Pt3, Pd3, Pd-doped Pt2, and Pt-doped Pd2 clusters. The aim of this research was to study the adsorption of CO on these clusters and understand the resulting changes in geometric and electronic properties. Our methodology involved performing DFT calculations to determine the adsorption energies, examining the bond lengths and binding energies of CO, and analyzing the electronic properties of the clusters. The key findings of our study revealed favorable adsorption of CO on all clusters, with notable modifications in bond lengths and binding energies. Among the clusters, Pt-doped Pd2 exhibited the highest adsorption energy, suggesting its potential as an efficient catalyst for CO removal and oxidation. Furthermore, the electronic properties of the clusters provided insights into their suitability for CO sensing applications. Overall, our research contributes to the understanding of CO adsorption behavior on nanoscale clusters and highlights the significance of Pt-doped Pd2 in CO-related applications, such as catalysis and gas sensing.

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