Economic Feasibility of Hydroponics Production System under Polyhouse: A Case Study in Gazipur, Bangladesh

Corresponding Author : Farzana Raihan (fraihan-for@sust.edu)

Abstract :

Hydroponics system is more input-intensive that requires a large amount of investment than the conventional crops production system. There is a need for economic analysis of the hydroponics for emerging growers in Bangladesh. The study aims to find out the economic feasibility of this production system and compare it with the traditional system. To do so, this study employed the case-study methodology to evaluate the profitability and feasibility of the farm, which uses this system. A thorough inspection of costs…

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Sacred places and spiritual beliefs can enhance biodiversity conservation: a case study from the north-eastern Bangladesh

Corresponding Author : Fahmida Sultana (fahmida-fes@sust.edu)

Abstract :

Conservation of biological diversity is one of the most challenging issues in the present era. The role of religious beliefs in conserving biodiversity is well appreciated and religious institutions are often integrated into the conservation action plans. However, we still lack an explicit understanding of the efficacy of these religious institutions and different beliefs in conserving biodiversity. We collected vegetation and animal data from the sacred places of north-eastern Bangladesh. Key respondents survey was also carried out to understand the…

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River channel shifting over the last 50 years of Upper Brahmaputra River, Bangladesh

Corresponding Author : Md Shofiqul Islam (shofiq-pme@sust.edu)

Abstract :

River erosion in the Brahmaputra basin is a common phenomenon, but it also causes adverse effects on human beings and the environment. This study illustrates the dynamics of channel shifting and bank erosion for the last five decades of the mighty Brahmaputra River. It was found that the Brahmaputra River was expanding/widening over time and is about 45% from its previous width in 1972. During 1972-2020, a total of 199.00 sq. km of land (agriculture/vegetation) area was eroded by the…

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A Combined BWM & TOPSIS Approach for Supplier Selection: A Case Study of a Pharmaceutical Company in Bangladesh

Corresponding Author : Chowdury Md Luthfur Rahman (clr-ipe@sust.edu)

Abstract :

Supplier selection is a critical activity having a substantial impact on the efficiency and effectiveness of the entire supply chain. As the procurement of pharmaceutical raw materials involves multiple global suppliers, proper evaluation and selection of the best supplier are necessary for optimizing costs, enhancing productivity, and increasing profitability. The purpose of this article is to present a comprehensive method of pharmaceutical supplier selection using the combination of the Best Worst Method (BWM) and the Technique for Order of Preference…

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CFD Analysis of Blood Flow through Bifurcated Carotid Artery (of Human): Newtonian vs. Non Newtonian Blood Model

Corresponding Author : Md. Syamul Bashar (md.syamul-mee@sust.edu)

Abstract :

Blood behaves like either a Newtonian or Non-Newtonian fluid depending on the shear stress it experiences. In the current study, a 3D model of a human bifurcated carotid artery was used to get insights into the differences between Newtonian and Non-Newtonian blood flow. As the experimental or numerical setup will be made simpler by representing blood as a Newtonian fluid. We are interested in whether it makes sense to represent blood as a Newtonian fluid. Fluent (ANSYS, 15) software was…

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Effects of customer satisfaction on Customer Loyalty through Service Quality and Features in a Selected Bank

Corresponding Author : Choudhury Abul Anam Rashed (rashed-ipe@sust.edu)

Abstract :

The loyalty of customers is needed for long-term business. Service quality and service features are certain criteria for customer satisfaction. The research investigates the relationship between customer loyalty with service quality, features, and customer satisfaction. A survey-based analysis based on a semi-structured questionnaire was conducted. SPSS-22 and Microsoft Excel 2016 have analyzed primary data. A conceptual model was developed to testify to the linkage between customer loyalty and satisfaction with service features and quality. The formulated hypotheses were tested. The…

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Determination of Genetic Diversity among Local Mandarin Oranges (Citrus reticulata) Using Mature Seed Derived Calli through RAPD Markers

Corresponding Author : Hammadul Hoque (hammadul-geb@sust.edu)

Abstract : Orange (Citrus reticulata) is cultivated at several districts of Bangladesh but the genetic diversity among cultivars is still unknown. This research aimed to find out the diversity among locally grown nine mandarin orange (C. reticulata) cultivars. For this purpose, calli were initiated and used as a source for genomic DNA. Murashige and Skoog (MS) medium supplemented with phytohormones (2,4-dichlorophenoxyacetic acid, benzyl adenine, 1-naphthalene acetic acid, kinetin, indole-3-butyric acid) and malt extract were used for calli induction. DNA extracted from the…

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Finite element algorithm for solving one-dimensional Richards’ equation

Corresponding Author : M. Sayful Islam (sayful-mat@sust.edu)

Abstract :

Accurate, efficient, robust, and stable numerical solution of Richards’ equation for variably saturated-unsaturated water flow through porous media is an extremely challenging task for any numerical integrator due to its highly nonlinear behavior. In this study, we have solved a one-dimensional Richards’ equation that frequently describes saturated-unsaturated water flow in homogeneous soil layers. The obtained solution is a set of an ordinary differential equation derived from mass conservation principles. We have used the finite element method for domain discretization of…

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Hydrothermal synthesis of a Novel Transition Metal Oxyfluoride compound containing 2-Methylimidazole: Crystal Structure, and Characterization

Corresponding Author : Belal Ahmed (belal-che@sust.edu)

Abstract :

Novel Molybdenum oxyfluoride compound [Zn(C4H6N2)4][MoO2F4] consisting of tetrahedral [Zn(C4H6N2)4]2+ cation, and octahedral [MoO2F4]2- anion have been successfully synthesized by a hydrothermal method in acidic conditions. Single crystal X-ray diffraction analysis confirms that the synthesized compound crystallized in the monoclinic space group, P2/c, and reveals a pseudo–one-dimensional structure through the strong inter-ionic hydrogen bonding interactions. The oxide and fluoride atoms form the inter-ionic hydrogen bonding network with the neighboring nitrogen or carbon atoms of the 2-methylimidazole ligand. The hydrogen bond network…

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Construction worker’s safety measures: A comparative risk analysis of construction sites of City Corporation and municipal areas of Bangladesh

Corresponding Author : Towfiqul Islam Khan (khan-gee@sust.edu)

Abstract :

This study assesses the risk status of construction workers at different levels of municipal and local government. Construction workers perform a crucial function for the structural and financial improvement of the country. This area is much less mechanized, but it requires more effort. Security issues are the main topic of this business. Various information has shown that this discipline is incredibly dangerous. This research attempted to evaluate the threat reputation of manufacturing workers at different levels municipal and municipal level…

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