Today Thailand has been facing the energy problems due to the limited sources of natural energy. Meanwhile the power consumption has been growing constantly and the tendency of consumption increases each year. Therefore to solve these energy problems especially in electricity-generating power which have been demanded throughout the country the National Economic and Social Advisory Council had a resolution to submit the Cabinet the comments on nuclear-electricity generation and proposed the government for approval on August 24 2003. The government assigned the National Energy Commission’s policy to set out the electricity production plan by nuclear power plant requiring that the power house during 2020-2021 will be established. The Electricity Generation Authority of Thailand (EGAT) has executed “the Power Development Plan 2007” established the many sets of committees to accommodate the plan and carried out surveying for dominant information for examples parameters and variables issues of resulting effect and economic expansion so that these would be summarized and submitted to the government under the production plan procedure set out by EGAT. According to the production plan for future energy reserves the new power houses have been established. To accommodate the economic expansion some potential factors needed to be taken into consideration included fuel supplied and low cost. Previous researches demonstrated that nuclear power plant was lowest on cost. In present study the appropriate model of unit cost for electricity generation in Thailand was examined. The equation was described below;....

In recently years geopolymer or polysialate composites have been developed and applied for a variety of fields. They are known as inorganic matrices composites which are fabricated and cured at room temperature or thermoseted in a simple autoclave. Geopolymer composites provide an excellent opportunity for achieving the goal of producing low cost high temperature resistant composite. The aim of this study is an investigation and comparing the flexural properties of geopolymer composites after reinforcements were influenced by plasma treatment with original fibre fabric. And preliminary results of the improvement in tensile strength Young’s modulus elongation of E-glass fibre fabric due to plasma treatment are studied in this paper. Many reinforcements and geopolymer matrices are now available but our works are focused on geopolymer composite Q17 Q13K-1 combination with E-glass fibre fabric which was investigated fabrication procedures together with their specific properties of these materials have been evaluated compared and discussed.

Nowadays many robot approaches to robust control problems are applicable only to linear systems for nonlinear systems; we may not be able to easily compute the solution to the optimal control problem as analytical solutions may not be available problem is that statically-stable wheeled mobile robots can easily become dynamically unstable. If the center of gravity is too high or the robot accelerates/decelerates too rapidly or is on a sloping surface so the power supply are necessary for input to actuator robot. This paper presents mode control solutions in power supply for support Omni mobile robot. The performance compare between Continuous Conduction Mode (CCM) and Discontinuous Conduction Mode (DCM) in Power supply. The experiment on the 5V/50W 100 KHZ prototype CCM and DCM converter which have been designed and builted with similar circuit layouts and component. Aspects to be compared are stability voltage and ripple factor. The both operation mode are discussed based on the simulation and experimental result.

The purpose of this research was to development of the apparel product style from Teen Chok Fabric of Mae Chaem District in Chiangmai province and technology relay of the apparel product development for the target group. This research managed by the survey the design the analyze the prepare a apparel pattern the apparel pattern evaluation the target training the training management and the analytical information. The research result were the nine apparel patterns that were decorative casual apparels with Teen Chok Fabric. The technique used patchwork patches gatherings and fillings etc. The opinion of the interested groups in the apparel pattern and evaluation were blouse pattern D B and I were the highest suitable in both patterns and decorations. The participants found that the community group participants in Chang Choeng Village of Mae Chaem district in Chiangmai. Before they were trained they had known in a few design the sewing and the decoration in medium level. After they had been training they know three parts in high level and they would require the next training in the highest level. The average were good level.

This research is aimed at investigating the amount of chromium carbide (Cr23C6) in stainless steel AISI 304 by electrochemical technique testing in calculating the Pa values that corresponding to sensitization stage and the corrosion behavior. The results will carry on to developing the welding process. The specimens were produced with Shielded Metal Arc Welding method. Moreover it was bending at the angle 0 90 and 180 degree and the process finished on post-heat treatment with different cool down conditions are 800ºC annealed in air cooled 1100ºC annealed in water cooled and annealed 1100ºC in air cooled respectively. The results show that: first conditional is appeared the maximum amount of Pa value (Pa > 0.4) indicating that more precipitation of Cr23C6 in heat affected zone (HAZ) of specimen. The second conditional is not found the sensitization stage because when the specimens were annealed at high temperature the chromium carbide will break up and residual stress in HAZ will decrease. At last conditional is found the less amount of Pa value; the reason of using high temperature on annealing process will decrease chromium carbide but slowly air-induced cooling must pass the critical temperature then some Cr23C6 will appear at grain boundary and cause of high corrosion rate. Concerning to the corrosion behavior the second conditional present the lowest corrosion rate corresponding to the better-quality of passive film. Whereas the first conditional shown the highest corrosion rate and low quality of passive film. Thus 1100ºC annealed with water cooled is excellent condition for developing the welding process.