This paper is a case study of reliability assessment with field warranty data of Clutch Master Cylinder(CMC) in hydraulic clutch system. We estimate lifetime distribution using field warranty data which contain much useful information for understanding reliability of the system in the real-world environments. However, the estimated parameters are far from existing reference values, which seems to be caused right censored field warranty data. To modify the parameters, we use the information of the durability test which is performed to verify that the lifetime of the item meets the required level. After that, we can observe that the modified parameters are closer to the existing reference values. This case study shows a possible idea to supplement lack of right censored field warranty data and its applicability

Small and medium companies have few dedicated employees for process planning and analyzing. They have many defects in their operational processes which result in less productivity. This research analyze a process of small company, which makes a hole and a round for gear parts. We found that the drilling operation is a bootle-neck operation and propose a revised general machine for drilling operation. The legacy drilling operation is performed as follows. First, a operator drills a half hole of a part and turns the part upside down. Then he drills a rest hole of the part. The operation needs more efforts than other operations. Therefore a productivity of the factory depends on that of the drilling operation. We developed a horizontal multi-drilling machine for the drilling operation. The machine has the drilling tool heads and takes three parts and makes a hole at the same time. It eliminates human operation in the middle of drilling, We also developed clamping jig for holding parts tightly. The proposed machine reduces the total operation time and enhances the productivity of the factory. The process capability index also increased from 6.8 to 9.6.

Background : Angelica acutiloba is a perennial herb from the family Umbelliferous. The root was used as a substitute for the crude drug. As a by-product of making cheese from whey, it has many proteins and nutritional components, but it has a drawback in that it must be stored in a refrigerator because the storage facility is short. In order to solve such problems, an attempt is made to solve the environmental and economic problems by producing a liquid fertilizer fermented with a large amount of whey. Methods and Results : In this study, we studied the fermentation of wheat germ with lactic acid bacteria (Lactobacillus brevis) and yeast (Saccharomyces cerevisiae). The preliminary experiment was conducted to determine the test concentration of 300 fold dilution and 500 fold dilution. As a result, the application of 300 times dilution liquid prepared by fermentation of whey using lactic acid bacteria showed higher growth and higher growth rate with higher number of leaves and branches. Growth response of the 500 fold dilution was higher than that of the control, but the growth of 300 fold dilution showed the highest. Conclusion : Therefore, it is considered that the 300 fold dilution of Lactobacillus can be used as a substitute for compost when cultivating medicinal plants.

In this study, the antimicrobial, antioxidant activities and α-glucosidase inhibitory activities of Amphidinium carterae ethanol extract (AE) was evaluated for using as a functional food ingredient. Chlorella ethanol extract (CE) was used to the comparison as a control. Anticancer activities of the AE and CE were analyzed by HepG2 and HT-29 human cancer cell. The AE showed antimicrobial activities for all tested bacterial strains. Whereas, CE showed antimicrobial activities for several tested bacterial strains only. The CE showed higher total phenolics contents, DPPH and ABTS radical-scavenging activities (47.36 mg/g, 22.42% and 28.58%, respectively) than those of AE (8.88 mg/g, 20.16% and 17.69%, respectively). AE showed anti-diabetic effect on α-glucosidase inhibitory activity with dose-dependantly manner. The cell viability of AE (125 μg/mL) on HepG2 and HT-29 human cancer cells were 38.12% and 11.27%, respectively. It was demonstrated that ethanol was efficient solvent for extracting functional components from A. carterae. These results indicated that AE can be described as a good candidate for using as a functional food ingredient.

This study was carried out to investigate the quality characteristics of fermented milk containing Rhus verniciflua seed (RVS) extracts (0.0%, 0.1%, 0.3% and 0.5%) and antioxidant activity of RVS extracts. The proximate composition of RVS was moisture (4.76%), crude ash (1.40%), crude fat (5.33%) and crude protein (11.10%). A total polyphenol content of 70% ethanol extract of RVS (554±2.64 mg/g) was higher than that of RVS water extract (145±3.47 mg/g). 70% ethanol extract (1103±6.42 mg/g) of RVS showed higher content in the total flavonoids (37±2.30 mg/g) and activities on DPPH free radical scavenging (73.23%) and ABTS free radical scavenging (83.47%) when compared with water extracted of RVS. The quality characteristics, such as pH, titratable acidity, and the number of lactic acid producing bacteria were not remarkably different between the fermented milk samples subjected to treatments with and without the addition of RVS extracts.