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..
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.
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
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.
Transition metal oxide composites are critical for advancing optoelectronic and sensing applications, yet scalable synthesis methods offering precise control over surface properties remain a challenge. This study presents a costeffective spray pyrolysis technique to fabricate ZnO-RuO2 composite films at a temperature of 300 +/- 10 degrees C with tailored Zn/Ru atomic ratios (100/0, 99/1, 96/4, 92/8). It is demonstrated that RuO2 incorporation fundamentally alters the growth kinetics and surface energy sites of ZnO, triggering a remarkable morphological evolution from spherical particles with dispersed microfibers to fully covered microfibers, flower-like nanosheets and finally RuO2-dominated layered nanosheets. This progression indicates a RuO2-induced alteration of surface energy minimization pathways. The structural analysis reveals wurtzite hexagonal ZnO for 100/0, Ru-doped ZnO without secondary phases for 99/1, a ZnO-RuO2 composite for 96/4, and a multiphase system with ZnO, RuO2, Zn(OH)2 and metallic Ru for 92/8 films, demonstrating progressive structural evolution with increasing Ru content. The interfacial chemical bonding (Zn-O-Ru) and increased oxygen vacancies are also revealed through energy dispersive X-ray analysis. These interfacial modifications directly govern the optoelectronic properties, yielding a significant bandgap reduction from 3.31 eV to 3.09 eV and a reduced electrical resistivity of 2.05 & times; 10- 3 Omega-cm for the 8 at% Ru composite. This work provides important insights into ZnO-RuO2 surface engineering and establishes spray pyrolysis for optoelectronic and gas sensing films.
Growing concerns about food safety and environmental sustainability have prompted the creation of eco-friendly food packaging. In this study, polylactic acid (PLA) based nano mat (PLM) and betel leaf (Piper betle L) infused PLA nano mat (BIPM) were developed by electrospinning. Antibacterial, antifungal, moisture management, force vs. elongation, SEM, FTIR, TGA and DSC characteristics were evaluated. SEM analysis reports that BIPM and PLM had the average fibre diameters of 20.5 +/- 4.79 nm and 16.5 +/- 4.33 nm, respectively, and porosity of 16.65% and 45.48%. BIPM exhibited strong antibacterial and antifungal activity, whereas PLM did not. Its surface can absorb moisture. With an initial degradation temperature of 251 degrees C for BIPM and 242 degrees C for PLM, the resulting nanomats were shown to have improved thermal stability. These findings highlight the potential of BIPM as an eco-friendly and efficient option for food packaging applications.
