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.
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:
Advanced material such as fibre reinforced polymer (FRP) composite has been known for its lightweight characteristics. However, the performance of the material compare to metal always debatable. Therefore in this paper, it is comparing metal structure used as safety device in automobile with kenaf FRP composite structure. For the composite structure, taper cross-section has been chosen while the kenaf fibre was used as the main constituent and reinforced by epoxy thermoset. As a result, the composite structure able to obtain higher specific energy absorption (SEA) but lower energy absorbed compare to metal
Gedi (Abelmoschus manihot L.) is a tropical plant in the Malvacea family that is used as food and medicinal/herbal plant? This shrub can be found in Sulawesi, Maluku, Nusa Tenggara Barat dan Papua. The objective of this study was to determine the parameters to obtain an optimal extraction yield. As parts of ultrasonic extraction method, the parameters tested were ratios of dried Gedi leaf powder to ethanol and time of sonication. Gedi leaves from North Sulawesi was dried in an oven at 70oC for five hours and followed by grinding and sieving with 40-mesh siever. The first phase of the study was testing different solution ratios (m/v) of 1:10, 1:20, 1:30, 1:40, and 1:50 at a constant time of extraction of 30 minutes. The second phase was varying the time of sonication at 5, 10, 15, 20, and 30 minutes at the constant solution ratio of 1:40 (m/v). Throughout the study, the ultrasonic wavelength was set at 40 kHz and the temperature on the water bath for concentrating the Gedi leaf extract was set at 50 - 60oC. The optimal yields from both phases were 9.866% for the parameters of 1:40 (m/v) ratio and 30-minute sonication. Further analyses of Gedi leaf extract produced antioxidant effectiveness of 86.77% and phenolic content of 24.34 𝜇g/mg