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:
Friction stir spot welding a relatively new solid-state joining technique usually used by automotive manufacturers as alternative to rivets and conventional spot welding resistance has led to the development of a fairly new technique a double-sided friction stir spot welding technique, this method was implemented for aluminum alloy AA6061-T6 by 2 mm thick, with rotating anvil, pin less tool for similar weld joints. Using double-sided FSSW technique increased welded joints strength. The design of rotating anvil and pin less tool for welded aluminum AA6061-T6 alloy has achieved a high tensile strength and avoid a defects such as keyhole. The cross-section welded joints, numerical analysis method explains that the material flow between pin less tool and rotating anvil is complex, using a rotating anvil and pin less tool with FSSW operation, suitable method for welding thicker sheets
The particles surface charge is classified among the essential criteria in the coagulation and flocculation treatment. Colloidal particles in suspensions are generally dispersed, electrically charged and do not settle by the gravity due to its stability and repulsion. Good settling can be achieved by disrupting the surface charge in the suspension of unstable particles. The zeta potential (ZP) is an indicator or criterion that represents the electrostatic interactions in a particle dispersion and is a measure of particle surface charges. This paper evaluated the mechanism and the effect of pH, ZP and particle size of colloids on the reduction of colour and suspended solids (SS) in leachate by the positive charge coagulant, Tin tetrachloride (SnCl4). A range of experiments on coagulation and flocculation was undertaken using the standard jar test with ZP measurement. It was found that the addition of positively charged SnCl4 as coagulant increased the leachate surface charge. The maximum ZP before the addition of SnCl4 was -22.4 mV at pH 11, and the surface charge of leachate was closed to the point of zero charges at pH 8 with -0.4 mV after the coagulant was added. Highest colour and SS performance were observed at optimum pH 8 with reductions of 98.9% and 100%, respectively. The reduction of repulsive forces at this pH promoted the collision of particles and thus made the aggregation possible
