The purpose of this research work was to synthesize titanium dioxide supported on activated carbon and used it as a catalyst for dye decolorisation. The effect of preparing factors on titanium dioxide supported on activated carbon such as calcinations temperature and the amount of carbon supports were investigated at 300 400 and 500OC and in range of 5-30 percent by weight respectively. The X-ray diffraction (XRD) technique was used to detect the crystal structure of prepared catalysts. It was found that all peaks were anatase phase. The morphology of these catalysts was analyzed by scanning electron microscope (SEM) and transmission electron microscope (TEM) techniques. The results showed regularly distribution of titanium dioxide supported on activated carbon. The particle size of obtained catalysts was 5-10 nm. The Brunauer-Emmett-Teller (BET) technique was analyzed physical characteristic of catalysts. The specific surface area average pore diameter and pore volume of catalysts was 151.02-784.13 m2/g 26.94-64.35 and 0.24-0.55 cm3/g respectively. Furthermore the activity of obtained catalyst was carried out by using these catalysts to decolourise dye aqueous solution. The titanium dioxide supported on activated carbon 20 percent by weight can obtain 99.78% decolourisation at dye concentration 75 mg/L catalyst concentration 0.5 g/L within 90 minute. Comparison with titanium dioxide P25 (commercial grade) titanium dioxide supported on activated carbon has higher ability. This is because it was not only photocatalytic reaction but it was also absorption

The objective of this work was to study the feasibility of recovery N-Methyl-Pyrrolidone (NMP) and acetone solution in cleaning the slider fabrication process in the manufacturing process of hard disk drive by distillation. The operating parameters such as pressure (50 - 500 mbar) temperature (60 - 110 C) and time (20 - 70 minutes) were investigated. The highest purity of solution was ca 98.12 %of N-Methyl-Pyrrolidone at 110 C 200 mbar with 30 minutes that it is sufficiently purity to be re-used. This solution could be produced with 0.33 Liter/hour with 405 Baht/Liter (excluding investment cost) that would be saved 565 Baht/Liter and environmentally friendly with clean technology.

The objective of this research is to proposed a semi-automatic method for mapping electric poles using the structure from motion technique or SFM. First an epipolar geometry for each image pair is estimated. Then the 3D structures are obtained using incremental SFM technique which will give us both 3D point cloud of the study area and camera parameters. Also vertical 2D lines are extracted from the input images. These 2D lines and the 3D structures are then integreated for estimating the positions of electric pole in 3D space. Finally these 3D electric poles are then geo-registered by estimating 3D rigid transformation from embeded coordinates in the input images.

A research was aimed to investigate appropriate procedures of cabinet drying of flour made from Toddy palm at 60 65 and 70 degree Celsius and employed it as an ingredient in 3 Thai traditional desserts - Kanom-Chun Kanom Num-dok-mai and Kanom Puy-fai respectively. The investigation emphasized on these effects on color and odor of the products. Palm flours at the level of 0% 10% 20% and 30% was added then physical and chemical properties consumer’s acceptance were investigated and their shelf-life of the products packed in polyvinyl chloride and double layer of polyvinyl chloride and polyethylene at room temperature was inspected every day. Drying temperature of 60 ?C and 10% flour addition in the formulation found to be the optimal condition and also produces best quality of the products accepted by consumers as in such conditions overall score of acceptance was statistically significantly highest ( P>0.05) with 7.73 7.95 and 7.62 average scores for Chun Kanom Num-dok-mai and Kanom Puy-fai consecutively. Proximate analysis of these products in terms of moisture ash fat fiber protein and carbohydrate revealed that they were statistically different ( P>0.05). When 100 consumers were asked to taste and rank their acceptances Kanom Puy-fai Kanom Num-dok-mai and Kanom Puy-fai was acceptable by 66 28 and 6 panels successively. However these products should not store for more than a day due to the fact that microbiologically total viable count would be exceeds specified standard by a day.

The objective of this research was to compare the effectiveness of water hyacinth and cootail for wastewater treatment by taking water sample from Klong Bangkhen-mai near King Mongkut’s University of Technology North Bangkok. The results showed that there was no diifference on water temperature changes in tanks between two plants. pH of water in coontail tanks was between pH 8.69 to pH 8.91 and pH of water in water hyacinth tanks was slightly increasing between pH 7.71 to pH 8.26. The more amount of coontail added the higher DO would be between 9.18 mg/L to 10.02 mg/L. Moreover COD of water was decreasing according to the amount of cootail addition and more effective than that in water hyacinth tank especially in 150 grams coontail tanks but TS in water hyacinth tanks was much more decreasing than that in coontail tanks. TS was between 21.73 mg/L to 25.91 mg/L. COD was between 45.30 mg/L to 48.34 mg/L.