Dhaka University of Engineering & Technology, Gazipur (Bengali: ঢাকা প্রকৌশল ও প্রযুক্তি বিশ্ববিদ্যালয়, গাজীপুর) or DUET is a public university in Gazipur, Bangladesh which focuses on the study of engineering and architecture. It is one of the nine PhD granting research universities of Bangladesh.Most of the existing 13 departments under 4 faculties offer both undergraduate and postgraduate degrees, including PhD programs. Apart from the faculties, there are also 03 institutes that offer postgraduate degrees and emphasize research.About a total of 3500 students are currently pursuing undergraduate and postgraduate studies. The current per year intake of undergraduate students is around 880, and graduate students in Masters and PhD programs are about 240. The university also has a cell (Institutional Quality Assurance Cell – IQAC) to enhance and ensure quality education and research.In addition to its own research the university undertakes collaborative research programs with different national and international universities, industries, and organizations. Every year, around 660+ students enroll in undergraduate programs to study engineering and architecture.In the undergraduate admission test, only about top 5% students can get admitted among 12,000 selected candidates. The number of teachers is about 300+. Only the Diploma in engineering holders can avail themselves of enrolling here for bachelor's degree in Engineering and Architecture..
The increasing environmental concerns associated with petroleum-based plastics have accelerated the development of sustainable, biodegradable packaging materials derived from biodegradable and renewable packaging materials with improved functional properties. The study aimed to develop a biodegradable barley starch-based plastic with antimicrobial properties for packaging applications. The novelty lies in using barley as a matrix for making bioplastic functionalized with Ocimum tenuiflorum (holy basil) was developed as an environmentally friendly active packaging material. The bioplastics were prepared using the solution-casting method, with water, glycerin, and vinegar as plasticizers. The effects of adding basil extract on the structural, mechanical, thermal, moisture-management, antibacterial, and biodegradation properties of the bioplastics were systematically studied. Scanning electron microscopy (SEM) showed that the bioplastic had a dense and homogenous morphology without significant pores or defects. Fourier-transform infrared (FTIR) spectroscopy confirmed the incorporation of basil-derived functional groups into the starch matrix. Thermal analysis showed improved thermal stability with increasing basil extract content. The glass transition temperature (Tg) increased from 65.4°C to 80.2°C, while the total mass loss decreased from 90.86% to 84.94%. The basil-enriched bioplastics also showed a higher residual mass (5.92–6.20%) than the control sample (2.41%), indicating improved thermal resistance. The developed bioplastics showed a bursting strength ranging from 3.5 to 5.14 kg/cm² and controlled moisture absorption. Soil burial testing showed 42% biodegradation after 12 weeks. In addition, the films demonstrated antibacterial activity against Staphylococcus aureus. These findings highlight the potential of barley starch-based bioplastics enriched with holy basil as environmentally friendly materials for active and sustainable packaging applications.
The increasing environmental concerns associated with petroleum-based plastics have accelerated the development of sustainable, biodegradable packaging materials derived from biodegradable and renewable packaging materials with improved functional properties. The study aimed to develop a biodegradable barley starch-based plastic with antimicrobial properties for packaging applications. The novelty lies in using barley as a matrix for making bioplastic functionalized with Ocimum tenuiflorum (holy basil) was developed as an environmentally friendly active packaging material. The bioplastics were prepared using the solution-casting method, with water, glycerin, and vinegar as plasticizers. The effects of adding basil extract on the structural, mechanical, thermal, moisture-management, antibacterial, and biodegradation properties of the bioplastics were systematically studied. Scanning electron microscopy (SEM) showed that the bioplastic had a dense and homogenous morphology without significant pores or defects. Fourier-transform infrared (FTIR) spectroscopy confirmed the incorporation of basil-derived functional groups into the starch matrix. Thermal analysis showed improved thermal stability with increasing basil extract content. The glass transition temperature (Tg) increased from 65.4°C to 80.2°C, while the total mass loss decreased from 90.86% to 84.94%. The basil-enriched bioplastics also showed a higher residual mass (5.92–6.20%) than the control sample (2.41%), indicating improved thermal resistance. The developed bioplastics showed a bursting strength ranging from 3.5 to 5.14 kg/cm² and controlled moisture absorption. Soil burial testing showed 42% biodegradation after 12 weeks. In addition, the films demonstrated antibacterial activity against Staphylococcus aureus. These findings highlight the potential of barley starch-based bioplastics enriched with holy basil as environmentally friendly materials for active and sustainable packaging applications.
This study presents a comprehensive and comparative first-principles analysis of cubic-phase perovskite (MgBO 3 ) and anti-perovskite (Mg 3 BO) compounds, where B = Si, Ge, Sn, Pb, with a focus on their physical properties.
This study investigates the self-assembly of cetyltrimethylammonium bromide (CTAB) with sodium alginate (SA) in presence of anionic and nonionic hydrotropes (HYDTs) using conductometric technique. The research focused on determining critical micelle concentration (CMC) and degree of micelle ionization (alpha) of the CTAB + SA mixture by analyzing conductivity versus CTAB concentration plots. Results indicated that introduction of HYDTs significantly impeded micelle formation compared to aqueous medium. The CMC values also displayed a clear dependency on temperature variation. Notably, spontaneous micelle formation is confirmed by the negative Gibbs free energy (Delta G0m) values across all solvents examined, suggesting favorable thermodynamic conditions for micellization. Additionally, magnitudes of enthalpy (Delta H0m) and entropy changes (Delta S0m) provided significant insights into underlying interaction forces, indicating that hydrophobic and electrostatic interactions play vital roles in the self-assembly process. These findings influence a deeper understanding of surfactant behavior in complex systems and may have expressive implications for industrial formulations, markedly in drug delivery and pharmaceutical design.
The escalating global water crisis underscores the urgent need to evaluate groundwater potential, particularly in regions like Bangladesh where safe drinking water is increasingly constrained. This study delineates groundwater potential zones (GPZ) in the Gazipur District by integrating fuzzy logic techniques with Geographic Information System (GIS) analysis. Twelve thematic layers such as slope gradient, drainage density, roughness, profile curvature, plan curvature, topographic wetness index (TWI), geology, lithology, rainfall, soil texture, land use/land cover, and aspect were utilized to generate a composite groundwater potential model. Each parameter was converted into a fuzzy membership value, and the layers were subsequently combined using a fuzzy overlay approach. The final GPZ map indicates that 44.29
