A small plasma system using microwave oven was developed for the application of surface modification and cleaning in thin films research. The microwave oven with 800-Watt power generates 2.45-GHz frequency. The vacuum chamber was inserted into the microwave oven from the top of oven wall and it was evacuated by a rotary pump to less than 7 x 10-3 Torr. This system can generate argon and oxygen plasma at a pressure of 0.2 – 3.0 Torr. This small plasma system was applied to clean a surface of microscope glass slide using argon and oxygen plasma. To reveal the effects of argon and oxygen plasma on material surface the glass slide was measured by contact angle tensiometer. The results show that the contact angle between a water droplet and glass surface decreases with increasing the exposure time. This result indicates that the cleanness of material surface was improved by using the small plasma system.

The relativity of the Downy Mildew (45 and 60 days after transplanting) for 109 lines in both yield and yield components of cucumber from July 2012 to March 2013 was studied at Agricultural Technology Research Institute of Rajamangala University of Technology Lanna Lampang. It is discovered that the correlation coefficient of downy mildew levels at 45 and 60 days after transplanting correlated well at 0.78 (r = 0.73). Furthermore it is also found out that the correlation coefficient of downy mildew levels at 60 days after transplanting was negatively correlated with fresh yield per rai at 0.58 (r = -0.58). When considering from the path coefficient it is found that the number of fruits per plant had high total effects and direct influence on yields per rai (0.84 and 0.70 respectively). Whereas the downy mildew levels at 60 days after transplanting had negative total effects at -0.58 indirectly with number of fruits per plant at -0.27. Thus the cucumber with high downy mildew at 60 days after transplanting will lead to 58 percent of yield reduction that it will reduce the number of fruits per plant which caused yields reduction.

The purposes of this research were: 1) to develop web-based instruction (WBI) on CAI course using project-based learning technique; 2) to evaluate if the WBI meets an 80/80 efficiency criterion; 3) to compare the students’ learning achievements by pre-test and post-test; and 4) to examine student satisfaction towards the WBI. The sampling group selected by purposive sampling was 30 grade 12 students who registered in the 2nd semester of academic year 2012 at Sarasas Witaed Bangbon School. The research instruments consisted of ten units of WBI; a learning achievement test administered before and after the instruction; and the evaluation form of the student projects. The statistical tests employed to verify the efficiency of the WBI were the E1/E2 efficiency index and t-test. The result of this research found that the efficiency of WBI was 84.56/82.33 which was higher than standard criterion 80/80. There was significantly higher learning achievement of the students in the post-test than in the pre-test at .05 levels. The learners’ opinion after using the WBI was very satisfactory.

The purposes of this research were 1) to study the school academic administration of Rajamangala University of Technology Isan 2) to study the correlation between the administrative factors of school academic administration and the university academic administration of Rajamangala University of Technology Isan 3) to study Factors Effecting on the Administration of Academic Affairs of Rajamangala University of Technology Isan 4) to analyze the multiple regression of Factors Effecting on the Administration of Academic Affairs of Rajamangala University of Technology Isan. The sample groups were Teachers and Administrator in Rajamangala University of Technology Isan. The sample groups were 402 Teachers and Administrators selected through Simple Sampling. The research instrument was a 5 level-rating scales questionnaire with the reliabilities of part 2 and 3 were 0.89 and 0.91 respectively. The statistical Techniques employed in data analysis were percentage mean standard deviation Pearson Product Moment Correlation Coefficient and Enter and stepwise Multiple Regression Analysis by using the Computer program. The results were as follows 1. A whole and each part of the University academic administration of Rajamangala University of Technology Isan were high level. 2. The positive relationship of the administrative factors and the school academic administration of Rajamangala University of Technology Isan were high level and significantly at 0.05 3. A whole factors and each part of the academic administration of Rajamangala University of Technology Isan were high level. 4. For the forecast of best factor Enter and stepwise Multiple Regression Analysis it was found that the budget management(x5) characteristics of teachers(x2) University atmosphere(x6) the relationship between University and community (x3) Performance of administrator(x1) and the readiness of University of administration at 0.05 level significance (x4). If showed a stepwise Multiple Regression (R) of 0.80 finally the forecast for the University academic administration was at 64.40 percent. The forecast equations for the University academic administration were as follows: Equation of raw score: Y^ = 0.121+0.234(x5) +0.228(x2)0.113(x6) +0.134(x3) +0.136(x1) +0.112(x4) Equation of standard score: Z^ = 0.297(x5) +0.187(x2) +0.160(x6) +0.163(x3) +0.139(x1) +0.133(x4)

The study of loss of the tensile stress of the steel bar by rust corrosion was proceeded by select the sample steel bars which be corroded to analyze the physical character and find the percentage of weight decrease. Then made the comparison with the steel bar – weight of Thai Industrial Standard 20-2543 (RB) and 24-2536 (DB) and tested the resistance of tensile force. The result found that the steel bar that had percentage of weight decrease at 1-2% would had percentage of tensile stress decreased at 9-15% and had percentage of stretch at 9-39%. When they were compared with the Thai Industrial Standard 20-2543 (RB) and 24-2536 (DB). Overall if the percentage of the weight of the steel bar was decreased at 1-2% the steel bar would can be used in building with unimportant structure such as ground slab by rub the rust off and had the sampling random for the strictly standard test