Search

The process of overheating in the engine system, particularly in the #10-cylinder shank section, is the only factor considered in the investigation of this damage or failure. As a piece of scientific literature, the goal of this study is to ascertain the primary reason for the connecting rod's failure. Analyzing the results of the thermal simulation produced by the finite element approach is the way for identifying the primary source of the damage. The finite element approach was used to do a thermal simulation of radiation heat transfer in steady-state circumstances based on the findings of the analysis (FEM). According to the average temperature coming out of the exhaust valve, the temperature in the cylinder liner is 442°C, and the heat in the piston rod is 90°C, which is in line with the typical operating temperature of the 3516 B Series diesel engine. According to a finite element simulation, the discoloration in the piston rod is mostly caused by radiation, namely the transmission of heat from the liner wall to the piston rod as a result of the combustion gases being trapped in cylinder #10. The connecting rod parts that changed color are still usable according to the finite element approach and the feasibility test. [ABSTRACT FROM AUTHOR]

Islamic educational institutions' management had never been separated from the political and cultural dynamics of society. In the context of Pesantren, policymaking cannot be separated from political decisions that accommodate the interests of a group. This research was conducted at Darul Amin Islamic Boarding School, one of the Aceh government's boarding schools, which was directly developed by the Dayah Education Office. The purpose of this study was to determine the political policies taken by the leader in resolving conflict in Pesantren during the pioneering system. The research method used was a qualitative approach with the survey diary method. The study resource persons are the boarding school leaders as top managers and several teacher councils involved in the conflict. The results of the research show that the policy practices of the leadership of the Pesantren management process included several aspects (1) structural reforms; (2) replacement of formal education levels; (3) recruitment system; (4) transfer of institutional status; and (5) increasing the independence of Pesantren. The effectiveness of policy politics is inseparable from the leadership's political skills, namely social astuteness, interpersonal influence, networking capability; in this case, the leader of Darul Amin Islamic Boarding School optimizes the Gontor connection network and apparent sincerity. [ABSTRACT FROM AUTHOR]

Understanding the concept of subject matter in depth is one of the most important competencies for teachers to have. However, empirically, there are still many teachers in schools who have not mastered this professional competence properly. For chemistry lessons in high school, for example, almost all concepts on the subject have not been mastered in depth and broadly. This article aims to describe the results of a study on the professional competence of chemistry teachers in Lombok, West Nusa Tenggara. The data source is in the form of teaching materials compiled by chemistry teachers and from the discussions with teachers through meetings in the forum of chemistry teacher (MGMP). The documents studied include syllabus, lesson plans (RPP), student worksheets (LKPD), and practical / demonstration instructions and it was found that there are many problems faced by teachers. The findings were analyzed and presented descriptively and qualitatively. The results of this study suggest strong relationship between mastery of subject matter in depth and success in the implementation of teaching learning process in the classroom. Thus, the need to master subject matter in depth is the pivotal key to improve professional competence of teacher. [ABSTRACT FROM AUTHOR]

Increasing productivity for small-scale manufacturing companies is one of the demands for excellence in facing competition in the industrial era 4.0 because apart from being related to the competitiveness of the company itself, it is also one of the key factors for a company to gain success in the process of achieving its business targets. In this case, high downtime has an impact on the decline in productivity in the company. Generally, the obstacles that are often encountered when implementing OEE are; varying levels of understanding of operators in understanding the factors of the six big losses, understanding of clustering techniques, segregation of data and information that have an impact on the level of accuracy and validity of the output data produced. Misleading this data causes errors in determining the implementation of improvement. Another issue related to the high price of a hardware system and paid integration software from large applicators causes obstacles for small and medium enterprises in implementing OEE systems. This study aims to provide an alternative method of controlling OEE values with the concept of data collection and monitoring dashboards that are simple but comprehensive, and low-cost. From the test results, it is known that the OEE database system makes it easier for stakeholders to see OEE performance and identify six big losses. Another finding related to the storage capacity of the OEE database system is considered to be running normally if the data storage is a maximum of 7 days of production or a total of 21 shifts. so, it requires segmentation of copy system data for 4 times in 1 month. [ABSTRACT FROM AUTHOR]

A Manufacturing plants that use engines and generate heat generally require a cooling system, either with air, water, and other heat transfer methods. The cooling water system in the pipe manufacturing production plant has a functions to supply cooling water for production machines, such as Barrels, VCU, ECU, and the End forming process. Therefore a good cooling system will affect and determine the output and product quality. This research aims to propose a suggestion to improve the flow of cooling water piping system using the system modeling method. The finding in this research it is known that the ratio between the cooling water requirement in the current plant versus the water supplied is not balanced. The minimum water supply requirement for a PVC plant is 744.5m³ / h meanwhile the current flow cooling water piping system is 237.24 m³/h. From the results of comparative calculations using pipe flow software, changes to the pipeline design from above can increase the total water discharge compared to the existing conditions. The qualitative advantage of implementing this design is that the plant is organized more neatly & cleanly. [ABSTRACT FROM AUTHOR]