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:
Electronic gadgets nowadays have become an essential part of daily human life. Electronic devices are increasing in popularity because of the convenience to use, and it can provide many kinds of information with a single touch from the web. However, it needs electrical energy source operation. With the increasing demand for electrical power, all countries face some technical issues with the consistency of current power sources and tend to fail from time to time. Several alternative power systems are proposed; the piezoelectric power system is the best choice since it is a low cost and one-time investment. This paper explores how to create an electrical source by using a piezoelectric transducer. Piezoelectric transducers (PZT) are particular types of materials that can convert mechanical energy into electrical energy. For this specific, this project has proposed the concept of piezoelectric power generation to use shoe pressure. Whenever someone walks by wearing this specialized shoe, the pressure is exerted on the shoe sole due to weight and muscular tension. The piezoelectric generator embedded into the shoe's sole converted the mechanical energy into electrical energy. A rechargeable battery stored management system will keep the power as electrical energy for further uses. The proposed approach has been designed and implemented the shoe sole, and the result shows good compliance with theory and design. These results will help the other researchers who are working in this field.
In this work, PMMA (Poly methyl methacrylate) microfluidic system was used as a micro-reactor for urea hydrolysis by urease enzyme with use conductivity principle and utilize sound level meter(SLM) App in smartphone as a novel detector by considering the peak height in the App as an indicate for urea concentration. the advantage of use small volume and how the reaction carried on in the microfluidic system with simple and low cost are discussed, and the results were analyzed and statically determine. The linearity, detection limit (3×noise) and Correlation Coefficient, 62.5-500 ppm, 31.25 ppm and 0.992 respectively also, recovery studied were between (98.5-100.13%).
The West Middle Cheliff watershed is located in the north-west of Algeria. It has an enormous potential alluvial groundwater and belongs to three sub-watersheds named: Wadi Ras Ouahrane, Wadi Sly and Wadi Cheliff Ouarizane. The Sidi Yakoub dam water releases on Wadi Sly for agricultural purposes have influence on the wadi flow and on the piezometric groundwater outside the flood seasons. The study region piezometric fluctuations of both time and space allows showing a general groundwater flow direction from East to West and in the South from Wadi Sly to the centre, suggests a connection of groundwater recharge by Sidi Yakoub releases. To these effects, it is undoubtedly a piezometric dome appearance on the wadi Sly left bank and water concentrations become diluted in the low water period of 2015.
Enlargement of the channel dimension is difficult to build in a land of densely residential buildings. Therefore, some open channels are only possible to be built holes’ intakes. In some studies, hole intake was building in the channel wall. This study researched a circular hole intake built at the bottom of an open channel at ten small slopes variation and three variations of the diameter of the hole’s intakes based on flume experiments. The purpose of this research was found a new simple equation to found the coefficient discharge value of a hole intake at the bottom of the channel based on the flume experiment of the variables that were estimated to has the most influence on this discharge coefficient parameter. So it can make it easier to calculate or find the discharge value of hole intake at the bottom of the open channel. Methods of data analysis used the linear regression graph and the multiple linear regression graph. The first result obtained four variables that affected the coefficient of discharge value of the circular hole intakes at the bottom of an open channel, namely a cross-section area channel, an area of hole intake, channel slope, and Froude numbers. Then other result obtained precision percentage for the discharge value of hole intake from the calculation used the new equation of the discharge coefficient compared with the discharge value of hole intake from manual measurement was 99.23%.
In this study, copper oxide nanostructures were prepared by an easy, simple, short time and economical electrochemical method using polyvinyl pyrrolidone (PVP) and polyvinyl alcohol (PVA) as stabilizing agents. Copper is used as precursors as melt anode electrodes during electrolysis to prepare CuO particles. The characterization of the prepared CuO NPs was studied by field emission scanning (FE-SEM), transmission electron microscopy (TEM) and atomic force microscopy (AFM). The FE-SEM images of CuO / PVA and CuO / PVP were both rectangle and regular cube shapes respectively. TEM images were prepared from CuO / PVA and CuO / PVP. They had an average size of 30-50 nm. The XRD results revealed the hexagonal structure of CuO nanoparticles. The optical properties of the prepared CuO / PVA and CuO / PVP nanoparticles were studied through UV / VIS spectroscopy. The optical band gap was found to be 3.60 eV and 3.75 eV for CuO / PVP and CuO / PVA. Dye solar cells were designed using CuO / PVA and CuO / PVP as positive electrodes (front electrode) and graphite as cathode (back electrode) deposition on the surface of ITO glass in the presence of two types of natural dyes, these are cabbage and spinach dyes, and iodine / iodine electrolyte solution. The PV cells prepared using spinach dye were more efficient. It is noticed from the data that the dye has a very important role in increasing the efficiency of the solar cell, as the cells made from spinach gave a much higher efficiency than the cells prepared from the red cabbage dye in all cases.
