Research/Technical Note
Assessment of Materials Management Practices in the Selected Public Service Sectors in the Case of Debre Markos City Administration Bureau
Mekuanint Temesgen*
,
Mekonnen Dibu
Issue:
Volume 13, Issue 5, October 2024
Pages:
81-90
Received:
25 July 2024
Accepted:
4 September 2024
Published:
20 September 2024
Abstract: One of the main life bloods for operating every institutional task are materials. As a result, the objective of this study was to assess materials management practices in the selected public service institution in the case of DMSCAB. The researcher employed mixed research approach with a descriptive and explanatory research design to achieve the objective. The data was obtained from primary and secondary sources of data. the primary data was obtained via prepared closed ended questionnaire and interview. The researcher has used various statistical tests to measure whether the entered variables are explaining the dependent variable or not. Among various tests validity and reliability, normality, autocorrelation, and multi collinearity tests have been employed in this study. The main finding of the study indicated that planning activity, specialized or professional expert, integration activity and policy environment was statistically significant at 5% level of significance in explaining the materials management practices and discovered that there is poor materials management practice in their sector. Finally, the researcher concluded that effective materials management practices is still infant. Therefore, the researcher has extended some recommendations to the targeted sectors. Sectors should form a new structure for introducing and recognizing the basic necessity of materials management practices in their operation.
Abstract: One of the main life bloods for operating every institutional task are materials. As a result, the objective of this study was to assess materials management practices in the selected public service institution in the case of DMSCAB. The researcher employed mixed research approach with a descriptive and explanatory research design to achieve the ob...
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Research Article
Wear Response of Aluminum Using a Mixture of Graphite and Snail Slime as Lubricant
Issue:
Volume 13, Issue 5, October 2024
Pages:
91-100
Received:
16 August 2024
Accepted:
6 September 2024
Published:
20 September 2024
Abstract: This study investigates the effects of a mixture of graphite and snail slime as a lubricant on the wear performance of aluminum. Environmental concerns associated with conventional lubricants have led to current attention on bio-based lubricants. Bio-based lubricants have several positive effects on the environment that include: biodegradability, lower carbon footprint, non-toxicity, and minimal waste generation. The current study considers the prospective of using snail slime as lubricants. The experimental setup involved subjecting aluminum samples to various wear tests, with the use of different graphite and snail slime mixture as lubricant. The wear test was done using a pin on disc tribometer, with aluminum as the pin. Through experimental testing and analysis, it was found that this mixture exhibits promising results in terms of reducing material loss, volume loss and wear rate in aluminum-based systems. Snail slime and graphite ratio of 2: 1 improves the lubricating effect of graphite by 89.84% with the application of 10 kg load. The results show that the wear resistance of aluminum significantly improves with the addition of the graphite and snail slime lubricant, compared to traditional lubricants. The incorporation of graphite and snail slime has shown to improve the lubricating properties of the graphite, thereby enhancing the performance of aluminum in various applications. This innovative lubricant has the potential to revolutionize the field of tribology and contribute to the development of more efficient and environmentally-friendly lubricants. Further research is required to fully understand the mechanism behind the improved lubrication and to optimize the composition of the mixture for different types of aluminum alloys. This study presents a novel and effective solution for improving the wear response of aluminum, making it a valuable contribution to the academic literature on tribology. The results of this research shed light on the potential of using unconventional lubricants, such as snail slime, to enhance the wear performance of aluminum in various applications.
Abstract: This study investigates the effects of a mixture of graphite and snail slime as a lubricant on the wear performance of aluminum. Environmental concerns associated with conventional lubricants have led to current attention on bio-based lubricants. Bio-based lubricants have several positive effects on the environment that include: biodegradability, l...
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