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The purpose of the current study is to investigate the effects of adding nano-natural powders to the unsaturated polyester. The method: nano-pumpkin powders with different weight fractions of (3, 6, and 9) were used to improve the mechanical properties of a matrix of polymer for composite materials. The Hand Lay-Up method casting was used to cast the composite samples in this study, which were made of polyester resin reinforced with nano-pumpkin powder. Tensile, flexural, impact, and hardness tests were performed on the composite materials prepared in this research. The result showed the amounts of the flexural modulus, the impact of strength, and the hardness feature were raised to the rising weight fraction of the nano-pumpkin powders. In contrast, the tensile strength amount, tensile modulus, the percentage of elongation, and flexural strength were reduced. This work publicized the assets of nano-pumpkin powder hybrid reinforced polyester composites, which have not been tried up to now. [ABSTRACT FROM AUTHOR]

The research was conducted at the Tirta Sembada Regional Public Water Company which produces DAXU packaged mineral water. There is a problem with the company, DAXU packaged mineral water started production in December 2020, still does not have a production schedule. Whereas production scheduling is important for production planning and planning the inventory future. The method used to solve this problem is Holt Winter Multiplicative forecasting and Moving Average-4 to provide forecasting data for the next period and results forecasting can be continued to determine the production schedule for each product using the Master Production Schedule (MPS). The result of this research is the best forecasting method for each product is different and the scheduling is according to field conditions where the ordering policy uses lot for lot. [ABSTRACT FROM AUTHOR]