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 rare earth elements (REE) form the largest chemically coherent group in the periodic table. The versatility and specificity of the REE have given them a level of technological, environmental, and economic importance considerably greater than might be expected. The objective of this work was to determine the concentration of rare earth elements in phosphate samples from Egypt and Saudi Arabia, using both instrumental neutron activation analysis (INAA). The samples were prepared together with standard reference material and simultaneously irradiated in a neutron flux of 7 x 1012 n.cm-2 s -1 at ACTLAB activation laboratories Canada. Irradiated samples were measured using gamma-ray spectrometer based on HPGe detector. The choice of the nuclear reaction, irradiation and decay times and of the proper gamma ray measurement to determine the concentrations are presented and discussed
The work characterized the bright-band and estimated attenuation for Lagos using space-borne precipitation radars (GPM) and Dissanayake melting layer model. Furthermore, the impact of the melting layer on satellite communication signals was investigated. The rain height, freezing height, bright-band thickness and attenuation due to rain and melting layer were estimated. Three years monthly (January 2014 to December 2016) rain precipitation data was sourced from GPM air-borne dual frequency precipitation radar (PR) equipment. GPM DPR L3 precipitation data was selected from a group of products list under the physical quantities from the database of JAXA Earth Observation Research Center. The vertical reflectivity profiles (VRP) were thereafter constructed from these processed data. Results obtained indicated that, at 0.1%, 0.01% and 0.001%, the attenuation exceedance due to melting layer are 13.43 dB, 28.34 dB and 40.40 dB respectively. Without taking melting layer into account, attenuation exceeded are 8.34 dB, 18.31 dB and 34.80 dB at 0.1%, 0.01% and 0.001% percentages of time, respectively. This will provide useful information for use in the design and manufacture of satellite communication equipment with acceptable quality of service for domestic, commercial and military applications
