Technology Reports of Kansai University (ISSN: 04532198) is a monthly peer-reviewed and open-access international Journal. It was first built in 1959 and officially in 1975 till now by kansai university, japan. The journal covers all sort of engineering topic, mathematics and physics. Technology Reports of Kansai University (TRKU) was closed access journal until 2017. After that TRKU became open access journal. TRKU is a scopus indexed journal and directly run by faculty of engineering, kansai university. Asia Life Sciences
Technology Reports of Kansai University (ISSN: 04532198) is a peer-reviewed journal. The journal covers all sort of engineering topic as well as mathematics and physics. the journal's scopes are
in the following fields but not limited to:
For athletes who play adventure sports such as baseball, hockey, or in the military, they often use helmets that require high strength. Consequently, helmets are often designed with additional bearing frames. Conventional collisions come from the direct collision of the helmet's shell, transmitting force onto the load-bearing frame of the helmet then shifting force to the head of the helmet. Therefore, the bearing frame structure significantly plays a vital role in human safety. This paper investigates a simulation solution to minimize the impact on the head of a person when the helmet frame is impacted with a rigid object moving at high velocity. The metal frame structure is calculated to provide the best bearing capacity, combined with Foams/Styrofoam material to absorb energy. From that, we propose solutions to improve the structure and select the appropriate materials to minimize the impact on the head of the helmet when the collision occurs. In this study, the authors used finite element analysis (FEA) and performed on ABAQUS software
Increased population and urbanization is one of the changes in the use of the Wadaslintang Reservoir catchment area, this condition has the potential to cause pollution of some heavy metals that can accumulate in this aquatic biota. This study aims to determine the concentration and bioconcentration of Pb, Zn, Cu, and Cd heavy metals in Anodonta woodiana Lea (freshwater shellfish), Pomacea canaliculata Lamarck (golden apple snail), and Cherax quadricarinatus Von Martens (crayfish) in the Wadaslintang Reservoir. Samples of freshwater shellfish, snails, and crayfish were randomly collected in an area of + 100 m2 in three research stations at a depth of 0.0 - 0.5 m. Sampling was conducted in August - October 2018. The results showed that the three aquatic organisms contained heavy metals Cu, Cd, Pb, and Zn. The highest concentration is in A. woodiana, then P. canaliculata and the lowest concentration is in C. quadricarinatus. The results of the BCF value calculation showed the highest bioaccumulation values found in A. woodiana and P. canaliculata were Zn, which included in the category of moderate accumulation. Whereas in C. quadricarinatus the highest bioaccumulation value is Pb, but it is still included in the low accumulation category
