http://suspace.su.edu.bd/handle/123456789/41 2026-04-18T12:37:44Z http://suspace.su.edu.bd/handle/123456789/573 Scenario of Safety Issues Prevailing Accident in Rural Engineering Workshop in Bangladesh Rahman, Mahbubur; Hossain, Md. Arafat; Hossain, Md. Mostofa Safety is the condition being protected against any hazardous situation and any other type of failure, error and accidents. As a developing country our technology is growing day by day. But the man who works to develop this technology and works in different industries, factories and rural engineering workshops is deprived of their required safety. The safety issues provided for the workers are not properly maintained in Bangladesh. Almost no safety is providedfor the workers in rural engineering workshop in Bangladesh andfor that they are suffering from various problems such as financial, physical, social, spiritual, occupational etc. Many accidents have already been taken place due to not providing enough safety to the workers. Therefore, safety must be provided minimizing accident hazards and risks. The workshops safety situation in Bangladesh is very severe by international standard. An overview ofthe prevailing accident problem characteristics and some working safety priorities that should be addressed with due urgency are briefly discussed in the paper. In this paper an attempt has been made to highlight the workers safety issues in rural engineering workshops in Bangladesh. 2017-12-10T00:00:00Z http://suspace.su.edu.bd/handle/123456789/572 Energy Storage in an Impure Paraffin Wax Embedded in the Finned-Annulus of Two Horizontal Tubes: Part-Il Tabassum, Tonny; Hasan, Mainul; Begum, Latifa This Part-Il of the manuscript reports on the unsteady two-dimensional numerical investigations of melting of a paraffin wax (phase change material, PCM) which melts over a temperature range of 8.70C. The PCM is placed inside a circular concentric horizontal-finned annulus for the storage of thermal energy. The inner tube is fitted with three longitudinalfins which are placed strategically near the bottom part of the annulus to accelerate the melting process. The non-dimensional conservation equations for mass, momentum, and energy are solved employing a staggered control-volume based finite difference method using the previously verified in-house CFL) code. Under identical geometrical configuration and operating conditions, the melting characteristics of the finned annulus are compared with the annulus without fins presented in Ref [l]. The numerical results show that the average Nusselt number over the inner tube surface, the total melt fraction, the total stored energy all increased at every time instant in the internally finned annulus compared to the annulus without fins. This is due to the fact that in the finned annulus, the fins at the lower part of the annulus promotes buoyancy-driven convection as opposed to the slow conduction melting that prevails at the bottom part of the plain annulus. Fins with two different heights have been considered. It is found that by extending the height of the fin to 50% of the annular gap about 33.05 0 0 more energy could be stored compared to the bare annulus at the melting time of82.37 min for the identical operating conditions. The effects offins with different heights on the temperature distribution are found to be different. The present study can provide some useful guidelines for achieving a better energy storage system and also can aid in the design/optimization ofthe shell-and-tube LHTES devices. 2017-12-10T00:00:00Z http://suspace.su.edu.bd/handle/123456789/571 How Do Domestic Products Help Branding Bangladesh Globally? Kamal, Mushfeka Binte; l Amin, Ruhu; Sarkar, Cathy Bipasha This paper showed how nation branding can help Bangladesh capture the global market with the help of its domestic products. The study was qualitative in nature and based on secondary data only. This study found that nation branding can help the country increase its reputation. Bangladesh can brand the country andperform the nation branding in the outer world through its different domestic products, such as culture, tourism, exports industry, and public figures. These can brand and represent Bangladesh in the global market and thus, can bring more economic growth and more investments by branding the core products ofour country to theforeign countries. According to this study, RMG sector, the tourist sector, the local brands of Bangladesh, and the famous publicfigures are working together to build the popularity ofBangladesh and improve the brand value at the global market. To create Bangladesh as a happening nation to the outer world, our country and local brand should increase its advertising and global promotional activities to create a strong brand value of the country. 2017-12-10T00:00:00Z http://suspace.su.edu.bd/handle/123456789/206 Guide to Scientific Research Mabud, Mohammed A. The central purpose of this paper is to highlight the scientific nature of a basic research in any branches of knowledge. In order to make research really scientific, the researcher needs to religiously follow certain procedures starting from sample selection and data collection down to data analysis and report writing, followed by dissemination of findings for public consumption. The procedures envisaged in this paper are commonly followed by scientists across various fields of study. The paper also emphasizes that in scientific research, common sense and intuition have no place vis-a-vis divine knowledge and experiment. In order to guide the analyses of the data, scientist must bear in mind the unit and focus of his study. 2020-07-15T00:00:00Z