The objective of this research is to increase the tool life of trimming process by surface coating technology. The procedure of this research consists of two sections. In the first section the friction coefficient was investigated with the ball on disk technique by using a tribometer. Steel ball was produced from cold work tool steel grade SKD11 (JIS) hardened to 60±2 HRC. Two types of surface coating namely AlCrN and TiAlN were conducted by PVD technique. Disk material used in this experiment was made by stainless steel JIS; SUS 304 of 2 mm thickness. For the second section the wear tests of trimming die were performed by using flat punch and inclined punch 45 degrees without surface coating as well as the inclined punch 45 degrees coated with AlCrN and TiAlN (PVD). Workpiece material used for the wear test was stainless steel JIS; SUS 304 of 2 mm thickness. Additionally the finite element analysis was carried out for explanation the deformation of the workpiece during trimming operation. Although the friction coefficient of the surface coating was higher than non-coating it could be extended the tool life ostensibly. As the result of FEM the inclined punch 45 degrees could be generated the long sheared surface more than the flat punch. This is due to the internal stress of workpiece that did not connect from the punch to the die so the crack propagation would be delayed. The inclined punch 45 degrees coated TiAlN has a highly durable which can be used up to 5000 strokes.

The system of recording time in - out through the online system will help facilitate those who enter - leave the agency. That can record the time to attend activities anywhere and help people work easier by bringing information from a central database to connect with users. Nowadays the way of work has begun to go into a digital format that only requires fast accurate and convenient data linking. Entering or importing more than necessary data will result in delays. Authentication when entering and exiting an agency is useful in identifying identity and location by storing it as a database for further analysis. Therefore this research presents the application of technology to study and develop an online time attendance system. instead of scanning this hand clock machine and signing of time stamps

At present augmented reality (AR) technology has an essential role in peoples daily life. It has widely established in medicine commerce education just to name a few. This work presents the development of educational media in astronomy using augmented reality (AR) technology via website. It supports an inquiry-based learning (IBL) which is the one of pedagogy approaches for the 21st century education. Applying AR in educational media creating a 3D astronomy environment in the topic of solar systems making learners more motivated and eager in astronomy inquiry in order to construct scientific knowledge. Furthermore a post-test is conducted to observe the learning outcome from the educational media. To evaluate the development of educational media in astronomy using augmented reality (AR) technology the results showed the overall average satisfaction score of the system was 4.63 with a very satisfied level. Moreover it performs properly according to its mentioned objectives.

The objectives of the research on the application of dry ice in making chocolate mousse for the cold western dessert competition were to study the appropriate time for freezing chocolate mousse and test the physical quality of frozen chocolate mousse using randomized complete block design (RCBD) method at 95% reliability. The quality of senses sight color smell taste and texture and the overall preference were evaluated. The difference of mean was compared with by Duncan New Multiple Rang Test (DMRT) using a computer program to find the appropriate time to freeze chocolate mousse. 15 testers applied the 5 – point hedonic scale to test the product. Research results showed that the testers preferred the product that was frozen for 40 minutes the most. In terms of color smell taste and overall preference the mean was 4.50 4.41 4.00 4.35 4.25 and 4.21 respectively. The physical quality test results indicated that the texture of the mousse frozen for 30 minutes had the best hardness adhesion and flexibility 27.53 3.17 0.43 and 1.21 respectively. The product frozen at 40 minutes had the highest lightness (L*) yellowness (b*) and redness (a*) 40.15 13.03 and 22.31 respectively with the statistical significance (p≤0.05).

In this article the construction of a high-frequency high-voltage commercial flyback transformer to supply an input voltage for a tesla transformer is proposed. The purpose of a demonstration is a breakdown through the air gap of electrode. To confirm the proposed method the design of control of a flyback converter by using a commercial flyback transformer is rated with a 10 to 15 kV output voltage to supply a tesla transformer at a rated 30 kV and 120 kHz. The experimental results of an output breakdown design of the electrode and the setting for a 1 cm space are constructed. The electrodes consisted of the following: sphere–sphere electrode plane–plane electrode sphere–plane electrode and rod–plane electrode. It was found that there was a breakdown at the output electrode in all cases. Accordingly there was a breakdown with a 2 cm sphere diameter with reference to the IEC 60052-2002 standard; after that it was compared with the standard table and the atmospheric and temperature at the laboratory were adjusted resulting to a high voltage equal to 31.5 kV.