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:
This paper presents the study on the surface roughness model of workpiece in grinding. Based on the analysis of some previous studies, this research identifies the most outstanding model. After analyzing and evaluating its advantages, that model is considered in order to improve. The development of the model is implemented by putting into the roughness model two parameters that significantly affect the surface roughness in grinding, namely the elastic module of grinding wheel and workpiece material. The results of the application of the improved model to the prediction of surface roughness are compared with the roughness values when using CBN grinding wheel to grind C45 steel. It shows that the predictive roughness values are greatly close to the experiment results. The average discrepancy between predictive results with experiment results is approximately 8.11%. This study offers a promising ability to predict the surface roughness of a detail in grinding
The objective of this work is to investigate the effect of aqueous ammonia concentrations and pretreatment temperatures of rice hull to produce bioethanol. Aqueous Ammonia Soaking (AAS) and dilute acid were used to pretreat rice hull. The rice hull composition was analyzed by SEM and Chesson methods. AAS pretreatment was carried out at various aqueous ammonia concentrations of 5, 10, 15, 20, 25 % (v/v) and temperatures of 60, 70, 80 90, 100 oC. The result showed that the highest lignin reduction and glucan recovery were about 61.97%, 88.39%, respectively at ammonia concentration of 20% (v/v) and pretreated temperature of 100 oC. Furthermore, the result produced the highest glucose of about 241.8 mg g-1 and the bioethanol yield of 5.86%