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:
The use of powder tempeh in making coconut water soy sauce (CWSS) is an effort in increasing CWSS protein levels. The results of this study indicate that soaking the powder tempeh in coconut water affects the levels of dissolved protein. In addition, the presence of dissolved protein in the substrate is also affected by the tempeh fermentation time. The highest level of dissolved protein was produced from fermented tempeh for 4 days with a protein content (%) of 7.70. The use of powder tempeh also causes low CWSS water content, and increases the taste and aroma of CWSS
The alkaline-chloride solution based pretreatment process is an attempt to get cellulose from sago pulp fiber. The two stages of pretreatment carried out were 500 mesh sago fiber soaking in 15% ammonium hydroxide solution and hydrolysis in 4% chloric acid at a temperature of 95oC. During the pretreatment process, lignin and hemicellulose compounds were released with a percentage of 35% and 74% respectively. The pretreatment stage physically causes discoloration of sago pulp fiber. The acquisition of sago pulp fiber cellulose was strengthened by the appearance of typical peaks on IR absorption at wave number 1429.4 cm-1, 1322.4 cm-1, 1157.3 cm-1, 1110 cm-1, and 897 cm-1. The results of Scanning Electron Microscopy show that the cellulose obtained has a porous, rough and fibrous surface with irregular length and irregular fiber location. In addition, cellulose has a single phase with a crystal size of 15 nm
This paper reveals the different characteristics of stress distribution in center wing box, which is a primary structure of airplanes, using rivet joint and adhesive joint. The wing box model developed by Indonesian Aircraft Industry was simulated by commercial finite element analysis software. Bending load transferred from another set of wing structures was imposed on the model. The characteristics of Von Mises stress, maximum principal stress, and maximum shear stress distributions were investigated in the simulation. Those stress distributions in the wing box with different sets of joint between skin and stiffener, which are the rivet and the adhesion, were then compared under identical bending load conditions. The simulation results showed there is almost no stress concentration in the wing box skins in case of the adhesive joint is used. Furthermore, utilization of the adhesive joint decreases Von Mises stress values in the top skin up to 18%, bottom skin up to 34%, Z-type stiffeners up to 27%, and T-type stiffener up to 19% which can significantly reduce potential damage and failure of the wing box structures. This result shows the superiority of the adhesive to rivet joint in the subsystem component level, which can be a guideline in designing airplane joints and finding their appropriate adhesive materials
Nowadays, the use of smartphones is very widespread due to the various functions provided. Unfortunately, the evolution of smartphone functionality and adoption makes such devices as a tempting target for attackers. The purpose of this study is to investigate the motivational factors of security choices and control on smartphones among undergraduates in Malaysia. This paper adopted a quantitative methodology where data from a survey (N=200) of smartphone users is analyzed. The results of this study conclude that perceived vulnerability, perceived severity, self-efficacy, response efficacy and reward is significantly associates with security choices and control on smartphones. The results of these findings indicate that further research needs to be done to explore other factors that may be associate with security choices and control on smartphones
This study is designed to investigate the role of (0,1,2 and 3.0% by weight) Portland cement, hydrated lime, gypsum and bitumen in the stabilization mechanisms of many lead contaminated Iraqi soils; as measured mechanically by a “mini” JET device and chemically by the gravimetric dispersion ratio method (as DR,%) in 1:2 soil:water solutions. From the “mini” JET results, cement was the best mechanical stabilizer in increasing both the critical shear stress (τc, pa) and the degree of hardness (DH) and hence reducing both the scouring depth (SD, mm) and the erodibility coefficient (kd cm3/N.s); followed by lime and bitumen. Gypsum has proved its failure as a mechanical binder and its calcium produced flocks seem to be very vulnerable against wet conditions and the energy of running water scouring force. To the contrary and as a chemical stabilizer, gypsum was superior in reducing the dispersion ratio (DR,%); followed by lime, cement and bitumen. In the case of lead mobility, gypsum was the best in reducing lead solubility and presumably its mobility in treated soil solutions; followed by bitumen, cement and lime with a stabilization efficiency (SE,%) of 93,90,59 and 54.9% respectively, but the formed gypsum calcium-clay flocks loaded with lead may be easily detached by the running water forces
