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Mechanical properties of ductile iron casting are strongly inclined with metal matrix microstructure, graphite elements presence and impurities rate. Increasing in the number of graphite elements near to sphere shape (nodule), more superior mechanical properties will be realized. Automotive castings normally produced in mass production due to high demand; vertical moulding configuration is one of the best options for producing mass quantity automotive castings. This study aim to discover either the vertical moulding configuration will affects the nodularity properties distribution for different cavity position in the mold. In this study, ductile iron disc brake castings have been produced by in-mold Mg treatment using vertical parted molding method. Samples from different cavity position were taken and analyzed their nodularity distribution. Image processing computer procedure-Lieca was used to characterize the graphite morphology of the samples. The result shows that the different cavity position of vertical orientation disc brake casting produced dissimilar distribution of graphite. Higher position of cavity has higher nodule count and round graphite.

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Zakat is one of the pillars of Islam that must be fulfilled by every Muslim individual. Zakat funds can be distributed to the asnaf, who are a group of people eligible to receive zakat. Despite the increase in zakat funds collected each year, there are still some issues of students dropping out from school due to poverty and miserable living conditions. The findings from this study informed us that 78.3% of teachers were ready and had positive views about the recommendation that the school should be appointed as amil by Majlis Agama Islam dan Adat Melayu Perak (MAIPk) to distribute the zakat funds to eligible students. This study had developed a zakat collection and distribution model with teachers paying zakat to the school (the agent) and the latter would hand over the funds to MAIPk. Next, the MAIPk would return some 25 to 50 percent of the funds to the school to be distributed to the poor and needy students. This zakat localization model aimed to decrease the number of dropouts among the students in the Perak state.