The purpose of this research was to construct experimental learning kit on sound velocity finding by resonance method in order to use for a material in Physics Laboratory I. The instruments used in this study included : 1) an experimental learning kit on sound velocity finding by resonance method with the experimental manual and the record forms 2) the pre-studying and the post-studying forms and 3) the questionnaires about students satisfaction in using the kit. The samples consisted of 32 first year students studying in the faculty of Engineering and Architecture. The results showed that the post-test have the higher significant than the pre-test score at level of 0.05. It was found that the sound velocity from both the theoretical and the experimental framework did not significantly different at the level of 0.05. The end correction by experiment higher significant than by calculation at level of 0.01 and students were highly satisfied in using the invented kit.

These researches were to determine the preparing and drying on physical and chemical properties of germinated khaohang rice from KDML105. Two factors on study were preparing germinated khaohang rice (chill at 5 oC and frozen -20 oC) and drying method (tray drier and infrared drier). The results on expansion (%) and texture of cooked rice found that there were not significant influence interaction and two main factors. But main factor on infrared drying method were affected to the highest head rice yield (%) and lowest on Chroma (C*). As same as gamma amino butyric acid (GABA) had the highest 23.37 (mg/100g) and preparing germinated khaohang rice had between 20.50 to 22.21 (mg/100g). The pasting properties reducing sugar total phenolic scavenging activity of DPPH free radical (%) and resistance starch were significant influence interaction.

This research aimed to investigate the effect of rice husk ash blended with fly ash on mechanical properties of concrete including compressive and flexural strengths. The studied parameter was the replacement percentages of cement by rice husk ash blended with fly ash at 0 30 and 50 by weight of cementitious materials. The constant ratio of rice husk ash to fly ash of 1:1 by weight was used in this study. The test results showed that the strength of concrete decreased while the replacement percentages of rice husk ash blended fly ash increased. The compressive strength at the age of 7 days of concrete containing rice husk ash blended with fly ash was lower than the control concrete but concrete containing rice husk ash and fly ash at 30% by weight of cementitious materials had comparable compressive and flexural strengths at the age of 28 days to the control concrete. As for the results the mechanical properties of concrete containing rice husk ash blended with fly ash at 30% by weight of cementitious materials were comparable to the control concrete.

The objectives of this research are to study the operation model for highland development of the Royal Project the model of knowledge extension to the farmers the result of operation to the farmers by the Royal Project and studying of the effective factor of the Royal Project development. This research is use the quantitative by collecting the data by interviewing. The result of the research there are 7 important models of development by the Royal Project to the farmer on the highland; (1) the operation procedures (2) operation plan (3) Format of operations (4) Officers in the center and in the area (5) Values and corporate culture (6) The farmer in the area and (7) Potential of the area. For the knowledge extension to the farmers the advice/visiting to the farmers is in top level. The “support/facilitation to the farmers” there are a purchasing the goods and agricultural products and product quality development in very high level. And the result of operations the Royal Project to the farmers resulting in economy the higher income and increasing the asset in high level the liabilities decreased moderately. In the social the farmers are developing at the high level in every topic. It is shown that the resulting in operation of the Royal Project can help in social development. And in the environmental there is an increasing of a conservation of the upstream area in very high level. The factors that effect to the result of operation by the Royal Project in economy social and environmental are depended on the model of operation support/facilitation and the quality of the officers in the Royal Project.

To determine the impact of breakwater construction on fish assemblages larval and juvenile fishes were used to interpretation. The study was conducted in the inter-tidal zone constructed breakwater and natural sandy habitats of Pakmeng Beach at Sikao District Trang Province. The morphology of water bottom showed that differ between the front areas of breakwater construction and natural beach. The bottom profiles at in front of natural beach is seem to be deep immediately from shore and connect to a flat sand dune whereas in front of breakwater construction area was shallow and flatten. Fish assemblage data had showed the average number of larval and juvenile fishes no differ between the two habitats whereas the number of taxa of juvenile fishes was higher significantly in the inter-tidal zone of breakwater constructed area (Mann-Whitney U=11.5 p=0.017) Even though our study have revealed the application of fish assemblage data to asses the impact of constructed breakwater. Current study have limited on data collection not entire seasonal of larval and juvenile fishes abundance. Using our interpretations in other study sites is necessary to collected more frequency both beach morphological and fish assemblage changes.