This research presents a study of the compressive strength chloride penetration and resistance to corrosion of concrete containing bottom ash. Fine and coarse aggregate is partially replaced with bottom ash 25 50 75 and 100% by weight of the aggregate. The results show that the compressive strength and low chloride penetration of concrete improves substantially with partial replacement of aggregate with bottom ash. Concrete mix cement containing 25 and 50% of bottom ash can be used to make coarse aggregate. In addition Concrete mix cement containing 100% of bottom ash can be used to make fine aggregate. The use of bottom ash produces concrete mix with good compressive strength and resistance to chloride and corrosion.

This research proposes reliability analysis in order to find the probability that a machine will work properly the failure rates of a machine and the factors related to the failure rates. The data were collected from 8 types of machines in an autoparts manufacturing factory. They consist of the times measured from the first day of the study until the machine produces defective product workers and production steps. The study duration is 90 days. The results show that the probability that the machine type 4 will work properly more than days is 0.40 machine type 5 more than 68 days is 0.32 machine type 6 more than 72 days is 0.31 machine type 8 more than 85 days is 0.26 machine type 9 more than 109 days is 0.80 machine type 10 at more than 52 days is 0.38 machine type 11 more than 71 days is 0.32 and the probability that the machine type 12 will work properly more than 85 days is 0.26. The failure rate of the machine type 4 at day 51 is 6.61 machine type 5 at day 68 is 1.61 machine type 6 at day 72 is 0.77 machine type 8 at day 85 is 1.26 machine type 9 at day 109 is 1.31 machine type 10 at day 52 is 0.92 machine type 11 at day 71 is 1.24 and the failure rate of the machine type 12 at day 85 is 2.15. The factors influencing on the failure rates are worker group 2 and production step 3 at the significance of 0.05.

This research focuses on development of Multimedia and Interactive System through Network for Learning of Opportunities School. This system used as a channel for students to learn outside the classroom and used as a teaching management tool for teacher. Tools for system development were program Microsoft Visual Studio. Database management system with MySQL. Write commands to work with PHP and Java scripts. For evaluating efficiency of the developed system this research used Sample group to answer questionnaires. The population of research is teachers and students of the Bankamwa school (Weboonratsamakee) in totals 97 people. The result of experiment shows that group is recognized the performance of system in the higher level and the system has efficiency of working.

The climate change is a natural phenomenon and effect on atmospheric which is the media of wireless communication. For the high performance in the telecommunication system this study therefore aimed to study the variables affecting to signal strength of wireless networks. The values of temperature humidity pressure and the signal strength of wireless networks 5 GHz were measured. The sample of this study was 148 access-points of TOT in Yasothon Province. For statistical analyses Pearsons correlation and regression were employed. The findings revealed that: 1) the average level of signal strength was 69.44 –dBm. The average levels of temperature humidity and pressure were 28.085 ?C 73.145% and 1004.246 hPa respectively 2) variables that had great influences on signal strength of wireless networks consisted of temperature humidity and pressure and 3) ambient variables of temperature humidity and pressure could predict the level of signal strength at 76.8%

For one-part adhesive systems a long working-life adhesive which can be cured rapidly at processing temperature is required in industrial applications because it provides assembly process versatility. The aim of this research was to study the methods for extending the working-life of an epoxy-based adhesive with anhydride curing agent. This adhesive formulation is used as an underfill material in electronic industry. The scope of this study was divided into two parts: 1) modification of adhesive formulation process 2) determination of the component in adhesive which causes the adhesive viscosity increased at ambient temperature. The results showed that the adhesive working-life extended from 2 hours to 6 hours with reducing formulation process time removing the moisture in filler and reducing fluxing precursor loading in adhesive. In addition the fluxing precursor loading also affects the thermo-mechanical properties of adhesive. For characterization the working-life and thermo-mechanical properties of this formulation were investigated using rheological technique and dynamic mechanical analysis (DMA) respectively.