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:
DMF is a common solvent using for HKUST-1 synthesis in solvothermal process. As solvent it is commonly believed that DMF to a certain degree will play role on the quality of final product. This research explores the possibility to enhance HKUST-1 quality by optimizing the usage of DMF during synthesis process. The experiment was performed by preparing solvent that consist of aquadest, ethanol, and DMF. Three samples (A,B, and C) were prepared using DMF that has volume fraction of 0.222; 0.333; and 0.444, respectively. Synthesis was done by heating the autoclave reactor at 100°C for 24 hours. The final products are prussian blue solid material. Sample analysis was performed to examine the properties of the final product. First, SEM analyis was performed and the microstructure of bipyramide crystal was observed. This structure is resembles the HKUST-1. XRD test also confirms that all the samples have peaks at around 6.70°, 9.48°, and 11.62° that is unique for HKUST-1. Additional process, i.e. heating process is done on one of the samples as the representative of the others (sample B) to examine if there is remaining solvent that is trapped. Not all samples are checked for activation process because all samples show similarities during SEM and XRD test. Sample B is then heated at 29°C (B1), 75°C (B2), 115°C (B3), 155° (B4), and 170°C (B5), respectively. The result from SEM and XRD test showed that sample B1, B2, B3, B4, and B5 could endure additional heating process and the remaining solvent that is trapped on the pore is succesfuly removed. Another test is BET adsorption measurement. The measurement concludes that samples A, B, and C are fall within microporous material category because they have pore diameter less than 2 nm and the pore diameter is getting smaller as the DMF volume fraction increases. Specific pore volume and specific surface area calculation also reveal that samples tend to have higher specific pore volume and specific surface area when DMF volume fraction increases. From the result of this experiment it can be concluded that DMF volume fraction has significant impact in controlling the properties of HKUST-1 that is produced during solvothermal synthesis process.
The dynamic load resistance of the Darrieus type wind turbine to changeable wind speed is investigated in this study, and the value of the force received by the wind turbine blades is calculated. Using Autodesk Inventor Professional 2019 software, the analysis was done quantitatively. The Darrieus turbine was tested at 2.5 m/s with a force value of 0.195 N, 3.5 m/s with a force value of 0.274 N, 4.5 m/s with a force value of 0.352 N, and 5.5 m/s with a force rating of 0.430 N. From the simulation results using the Autodesk Inventor Pro 2019 software, the effect of gravitational force is greater than the wind force in, so stress analysis is mainly caused by gravity while the wind force has no significant impact. The simulation results also have a characteristic that the higher the wind speed, the lower the stress value. In addition to the dynamic load simulation, the author also tries to implement the Darrieus wind turbines. The wind turbine blade rotation will be faster, and the Wind Generator will produce a greater voltage if it is supported by sufficient wind speed.
This paper presents a study on the English-majored students’ interests in the standard American accent while studying at university and the difficulty they might have in understanding American accents in listening comprehension tasks in particular and in real-life situations in general. The study also addressed the same problem in order to help a group of school teachers to improve their level of English. The findings reveal that most of the students and teachers surveyed have been mainly exposed to the standard British English accent and that’s why they somehow have difficulty in understanding the standard American accent which is quite different. It is suggested that the standard American accent should be taken into account more seriously, especially at schools and universities. As a result, it is expected that those institutions should try to raise English learners’ awareness in the difference among English accents and gradually improve their listening skills.
PhIP (2-Amino-1-methyl-6-phenylimidazo[4,5-b] pyridine), MeIQx (2-Amino-3,8-dimethylimidazo[4,5-f] quinoxaline) are among the most abundant heterocyclic aromatic amines (HAAs) in cooked meals, particularly rich in protein and lipid. HAAs is formed from the reaction of creatine or creatinine, aminoacidic and reducing sugar at high temperature (> 150oC), in approximately 10 min. International Agency for Research of Cancer has mentioned PhIP as a cancer precursor and it was assessed to be 100 times, and more than 2000 times more mutant than aflatoxin B1 and benzo [a] pyrene, respectively. National Cancer Center (Japan) and Harvard University have reported on the relation between consuming meat cooked at high temperature and risk of cancer. In Vietnam, consumption of fried food, fast food is increasing steady during recent year, with the CAGR of more than 15%, however, there is no data on this issue on cooked meat. The aim of this study was to analyze PhIP and MeIQx in fried food regularly presented in the daily meals of people from the North of Vietnam; and to analyze PhIP in the hair of selected meat eaters to check the presence of this HCA accumulated in hair. A survey has performed on the daily meals of 300 individuals from Hanoi, and outside of Hanoi (Ha Nam and Hung Yen provinces). In Hanoi, more than 65% of surveyors have consumed more than 85g of pork, beef, poultry, freshwater and sea fish, while in Ha Nam and Hung Yen only poultry and freshwater fish were eaten >85g per meal by more than 65% population. In Ha Nam and Hung Yen, people prefer eating fried to grilled meat except poultry among surveyors. In Hanoi, adversely, people prefer grilled to fried meat; half of population consumed grilled or fried food more than 1-3 times/month. LC/MS/MS has been carried out to analyze PhIP and MeIQx in 14 fried and grilled food samples (represented the regular meals) and 9 hair samples, from 3 groups of 25-39 years old, 40-49 years old and 50-59-year-old of meat-eaters. The max contain of PhIP of 77.21 ng/g has been found in grilled beef (surface sample), but it was not detected in fried sea fish and freshwater fish. MeIQx has been found in few samples and it was of 20.4 ng/g in grilled beef as well. In hair samples only PhIP has been studied as it has been mentioned as a good biomarker for HAA accumulation in the body [6]. In this study PhIP was detected at the max level of 21.22ng/g among meat eaters, however, it was not detected in the hair of the eldest group, 50-59-year-old.
Traditional areas represent the present of the past reality, which is reflected in its buildings and spaces. They are places of continuous life; carrying the history of the city in all its physical and objective dimensions, making them living areas that form an essential part of the city, and giving it a vision of another era. This paper explores the changes that occurred in the urban fabric of the traditional areas of disconnection, isolation and deterioration in the internal spaces. These changes led to the incompatibility of the characteristics of the fabric with the areas’ function (residential use), as a result of changing the movement axes systems, where the streets and roads penetrated the urban fabric in light of the change of planning priorities from fulfilling human requirements to trying to fulfill the machine requirements that has come to dominate contemporary planning thinking. The traditional Sarshaqam district of Suleimani was chosen as a case study, as it is an area that has undergone changes in its traditional fabric at the local and global levels. This was done by adopting a spatial analytical methodology based on 'space syntax' method and techniques, and the application of (GIS) program to quantitatively investigate the spatial organization of a traditional area and its transformation. The research examines the need for a clear and accurate perception of the change in the traditional urban fabric of the traditional (historical) urban areas, resulting from the changes in movement axes and the penetration of modern streets within the fabric. Accordingly, the hypothesis was formulated as follows: The syntactic properties of traditional urban areas, including the urban fabric, have been subjected to change due to the formal changes represented in penetrating parts of the traditional fabric by the modern streets. Results showed that the construction of the new streets or expanding them have clearly affected traditional urban areas. Also, many of its features have changed, causing them to lose parts of their traditional fabric, or losing the fabric's privacy and its distinctive identity.
