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:
In difficult economic situation, business ability is one main part of business survival. This paper proposes a business ability prediction by using the dataset from the survived SMEs which affected from financial crisis in Indonesia in 1997. We examined 17 features which could be used to predict the business ability by utilized feature rankings. With optimized random forest which obtained by utilizing parameter grid search and feature rankings, we obtained fairly good result in predicting business ability compared with another machine learning approach
Barleria prionitis L. leaf ethanol extract has the potential as an antibiotic. To obtain a simpler compound from ethanol extract, it is necessary to fractionation the antibiotic of landep leaves using hexane and ethyl acetate gradient and to conduct antibiotic testing using Kirby Bauer method on Staphylococcus aureus and Escherichia coli bacteria. Solvent gradients that have the potential as antibiotics include hexaneethylacetate (1: 9) and (2: 8). Analysis of the compounds responsible for the potential antibiotic activity of each fraction using GCMS (Gass Chromathography Mass Spectrum) analysis instruments. The results of the analysis of the hexane-ethylacetate (1: 9) fraction produced 70% similarity of 2 (3H) -Furanone, dihydro- (CAS) Butyrolactone. The solvent gradient of hexane-ethylacetate (2: 8) produced 89% similarity to 6.8-Dioxabicyclo (3.2.1) Octan-2. Beta.-Ol-3.3-D2
In order to measure the concentration of natural radionuclides in soil . The gamma spectrometric method (using 2.5 3.8 cm NaI(Tl) detector) was performed on soil samples .These samples were taken from different soil sites of Ancient Mosul in Mosul City, North of Iraq. Thirty Four soil samples were measured in order to assist specific activities of radionuclides of Ra-226 , Th-232 and K-40 . All of these samples were collected randomly from a depth of about 20cm from the surface using a hand trowel .Then soil samples were dried , crashed and passed through sieve. After that all the samples stored for one month. Before the analysis of soil samples , energy and efficiency calibration were carried out .We analyzed the spectra of samples using multi-channel analyzer (MCA) connected with the measurement system . The results of specific activities of radionuclides Ra-226,Th-232,and K-40 varied from 6.20 to 26.51(Bq/Kg) with A mean value 11.05( Bq/Kg) for Ra-226, 11.33Bq/kg to 40.78(Bq/kg) with A mean value 23.93(Bq/kg) for Th-232 and varied from 82.88 to 482.45(Bq/kg) with A mean value 226.60(Bq/kg) for K-40. Moreover, the results of this study were compared with those reported from other countries and worldwide average
During development and analysis of electrical machines, the electromagnetic field simulation software is used to their design and performance study. Ansys Maxwell, transient solver, is related with serial solution steps to determine machine currents, slot orifice width effect, material saturation and instantaneous rotor position. In this paper, Ansys Maxwell software is employed to design the Linear Induction Motor (LIM) using four types of slot orifice width. Flux density in the air gap with its harmonic analyzed by Fast Fourier Transform (FFT) are simulated. The performance of the mentioned LIM is investigated and compared with each other for the types used, which include the three –phase stator current and force develop
This paper intended to indicate the experimental investigation for presenting the influence of employing many fuel additives on spark ignition (SI) engine performance. Three types of fuel additives comprising, Octane booster, Gasoline booster, and Gasoline additive, are added separately with pure Gasoline for a volumetric addition of 2.5, 5, 10 mL/L, 1.5, 3, 6 mL/L, and 2.5, 5, 10 mL/L respectively, whenever 5, 3, 5 mL/L are the normal volumetric addition respectively. An SI internal combustion engine is used with rotational speed range of 1500 - 2500 rpm, wherever the nine blends and the pure Gasoline itself are employed. The results showed improvements in engine performance when using Octane booster. The brake power rises by 8.3%, 14% and 19.4% respectively at the use of half, double, and normal addition of Octane booster compared to that of using pure fuel of Gasoline. Brake thermal efficiency increases to its maximum value by 18.4% when using normal addition, and to its minimum magnitude for using half addition of 7.3% of Octane booster. It exhibited that the magnitude variations in brake specific fuel consumption through using half, double, and normal addition for using Octane booster was 9%, 14.7% and 20.2% respectively compared to employing pure Gasoline only. The results of using Gasoline booster and Gasoline additives found effect on SI internal combustion engine have similar influence as of using Octane Booster. It is noticed that using of additive type Octane booster and using a normal amount of additives lead to reduction in CO concentration in emissions compared with only pure Gasoline and other additives concentrations
