The objective of this research is to study the combustion characteristic of a low-pressure vertical port burner using computational fluid dynamics (CFD). The simulation model was created using Fluent 6.3 in 3D-model of the same size of the burner. The CFD results were verified by measuring the temperature around the burner head and a vessel. Moreover the results of conventional vertical port burner having the swirl angle of 90o and the inclination angle of 90o (CB-S90I90) and two swirl port burners (SB) being SB-S90I13 and SB-S30I90 were compared. The temperatures obtained from CFD and experiments were similar which the error was less than 9%. From the CFD’s results the temperature and heat flux of the SB-S90I13 burner were higher than those of the CB-S90I90 burner. The maximum temperature and heat flux of SB-S90I13 burner were 1445 K and 5291 W/m2 respectively. It was implied that the combustion characteristic and heat transfer to the vessel of SB-S90I13 burner was better than that of CB-S90I90 burner. It was resulted that the thermal efficiency of SB-S90I13 burner was better than that of CB-S90I90 burner which was the percentage energy saving of 6.93%.

The development product of dried pickled passion fruit peel aimed to study appropriate production process of dried pickled passion fruit peel to study the preservation and examine the acceptance from the customers. The result showed that the appropriate way to produce dried pickled passion fruit peel was the 30% 40% and 50% of intensity in syrup. With the intensity of syrup started from 30% the appearance color and smell of final product got highest average score. Therefore the production should be slow pickled with 30% of syrup intensity. In terms of preservation there was no microorganism over Thai industrial standard institute of fruits and vegetables 161/2015. Finally most of the customers accepted this product

The purpose of this Participatory Action Research (PAR) was to study the guidelines for creating recreational activities to promote health for the elderly and to create a practical guide for organization of recreational activities for senior citizens in Thamakham Subdistrict Municipality Mueang Kanchanaburi Kanchanaburi. This research project had a sample group of 40 volunteer participants who were aged 60 or over were able to take care of themselves and were inhabitants of Moo 1 Moo 2 and Moo 5 in Thamakham Subdistrict Municipality Mueang Kanchanaburi Kanchanaburi. The data-collecting instruments for this research were 12 recreational activity programs for promoting health for the elderly and structured interviews of the participants. Data analysis was performed by calculating percentages means and standard deviations. The results of the research project: 1. Most of the seniors were female married have no career have one to three family members and have medical problems. Most of them participated in community activities. 2. Most of the seniors have a medium level of basic knowledge in promoting health for the elderly people. 3. The level of point of view of the seniors about the purpose of creating recreational activities to promote health for the elderly was much more than average. 4. The level of satisfaction of the seniors about managing recreational activities to promote health for the elderly was much more than average. 5. The level of overall satisfaction of the seniors about recreational activities to promote health for the elderly was much more than average. 6. Suggestions were received from the senior citizens that the schedule for the activities should be Monday to Friday between 8.00 A.M. to 12.00 A.M. and that the venues for the activities should be dependent on the organizers and that there should be field trips. 7. Creation of a practical guide containing 12 activities to organize recreational activities for seniors in Thamakham Subdistrict Municipality Mueang Kanchanaburi Kanchanaburi.

The development of students mathematical ideas of under

This quantitative research aimed 1) to study operation performance of Thai Gem Businesses. 2) To study factors affecting firm performance of Thai Gem Businesses. The research was collected data by using questionnaire with 452 participants from production group of Thai Gem Businesses. The samples were collected conveniently and analyzed by frequency percentage mean standard deviation Pearson’s correlation coefficient and analysis confirmatory with Structural Equation Modeling: SEM. It was one of all statistic techniques to test for causal relationship of variables. The results found that database information management systems have positively affect strategic management and firm performance of Thai Gem Businesses with significant level 0.05. Database information management systems also have positive affect on strategic management of Thai Gem Businesses with significant level α < 0.05. Besides this research results found that database information management systems has positively direct and indirect affecting firm performance by pass strategic management with direct affect on firm performance equal to 0.346 and indirect affect by pass strategic management equal to 0.575. And total affect was equal to 0.921 with significant level. It showed that overall affect of database information management system on firm performance was more than strategic management affect to Firm Performance (0.603) with significant level 0.05. The analysis of correlation coefficient model showed that measurement between latent variables have positive correlation with significant level α < 0.05. The analysis of Structural Equation Model revealed that it wassuitable harmonize with empirical data ( χ2 / df = 1.489 CFI = 0.997 AGFI = 0.957 RMSEA = 0.08 RMR = 0.004) and consistent with the define hypothesis. The research results described the environmental of firm performance approach to strategic management by TOWS Matrix and recommendation on strategic management to solve problems on firm performance of Thai Gem Businesses in order to develop continuous firm performance for competitive advantage.