This research was study the optimum condition for chitosan film forming from preparing the chitosan solution 2% (w/w) that added with acetic acid 1% (w/w). The solution viscosity was adjusted by glycerol at 15 30 and 45 % (w/w) and Tween 10% (w/w). From the experimental results in case of the chitosan solution that adding with glycerol 45 % (w/w) Tween 10% (w/w) and drying which final moisture content at 23 % (d.b.) affected the highest viscosity of the chitosan film that compared with other condition. The ultimate tensile strength of chitosan film was 4.14 MPa. For banana storage testing the banana was wrapped with chitosan film for 10 days at room temperature the first five days the color of banana peel was yellow normally after that the peel was slightly increased with dark color. The total soluble solid of the banana was in the range of 19-28 Brix.

This research studied the factors that affect the efficiency of phosphate reduction in the wastewater of the washing process with CaCO3 and CaO produced from eggshell and mussel shell. The study found that the optimum condition for adsorption when using CaCO3 from eggshell is to adjust the pH to be equal to 10 take 15 minutes to absorb and add 1 gram of sorbent which can reduce the phosphate content by 25 percent and when changing the adsorbent to CaO the optimum condition for phosphate removal is to adjust the pH to 7 take 15 minutes to absorb and add 1 gram of adsorbent which can reduce the phosphate content by 24 percent. The optimum conditions for adsorption when using CaCO3 from mussel shell were to adjust the pH to 10 take 45 minutes to absorb and add 1 gram of sorbent which can reduce the phosphate content by 25 percent and when changing adsorbents to CaO the optimum condition for phosphate removal is to adjust the pH to 10 take 15 minutes to absorb and add 3 grams of adsorbents which can reduce the phosphate content by 24 percent. In addition when studying the adsorption of impurities in the wastewater such as conductivity turbidity COD and BOD it is found that the optimum reduction conditions can reduce the impurities of the parameters that mentioned above were 19.32 2.60 54.77 and 16.67 percent respectively. CaCO3 and CaO produced from eggshell and mussel shell can be used to absorb impurities in wastewater before releasing into natural water sources.

This aims of special project are study about method reduce astringent of ripening suitable products of carunda pasteurized juice we are study the changes during storage of carunda pasteurized juice and study cosumer acceptance of products of carunda pasteurized juice. From method revealed that the methods of ripening carunda the most suitable method is method 3 the method of ripening Cassia Tree in 3 days we are found physical quality in the value L* a* and b* (peel) is equal to 38.03±0.26 29.44±0.17 13.43±0.35 the value L* a* and b* (the meat) is equal to 35.43±0.10 36.86±0.08 19.87±0.07 Chemical found °Brix values were 8.83±0.29 and 2.97±0.02. The pH of the test scores in most aspects. The difference was statistically significant (p<0.05) and then study the dynamics between the preservation of products carunda pasteurized juice and found that L* a* decreased statistically significantly (p<0.05) and b* values were increased statistically significantly (p<0.05). The bacteriological quality of carunda pasteurized juice found that microorganisms not exceed 1x104 cfu/sample 1 ml yeast andmold must not exceed 100 CFU/sample 1 ml S. Cheryl Shea coli must be less than 3 MPN/sample 1 ml and Coliform less than 2.2 MPN/100 ml Which does not exceed the prescribed standards of the Ministry of Health. Can be stored at room temperature 4+2 °c storage for 3 weeks The study on the adoption products Karanda Pasteurized found that consumers agree 100 percent.

Corrosion of steel reinforcements in concrete is one of the main causes of early deterioration and reduction of service loads of reinforced concrete (RC) structures. This paper reports the results of an experimental program that was carried out to evaluate the effect of reinforcement corrosion on the flexural performance of RC beams and to investigate the efficiency of externally bonded carbon fiber reinforced polymer (CFRP) sheets to repair the corrosion-damaged RC beams. Seven RC beams with the same cross section and reinforcement details were prepared including the control beam (B0). First tension reinforcements of six RC beams were corroded by using an accelerated impress-current process to obtain corrosion levels of 15% 30% and 50% of weight loss according to Faraday’s law. Then three beams were repaired using CFRP sheets attached to the bottom surface leaving the other three unrepaired. All beams were subjected to the four-point bending load test. The experimental results show that the corrosion specimens demonstrated a significant deterioration on the structural performance and the integrity by decreasing in their ultimate load capacity stiffness and ductility. The deterioration by corrosion of tension reinforcements can be successfully overcome using CFRP sheets as the repair material. The technique can restore the beam strength to its original design strength except specimen B50F2 having severe steel-corrosion damage of 50%. A conservative value of the ultimate bending capacity of the beams with low corrosions (15%-30%) can be predicted by using RC conventional models as suggested in ACI 318. However the opposite trend is obtained for the high corrosion beam (50%). Appling ACI 440.2R provision to predict the ultimate flexural capacity of corroded beams repaired with CFRP sheets shows rather fair values for low corrosions (15%-30%) but significantly overestimates the strength of the high corrosion beam (50%).

In this study the wind speed characteristic and evaluation of wind power generation at Samoeng district Chiang Mai were investigated using wind speed data and wind direction data during time of January 2011 to December 2011 and measured at a height of 20 40 and 80 m above ground level. It was found that the mean wind speed of 3.8 3.92 and 4.30 m/s. While the mean wind direction of 20.73% and indicating from the southwest. The mean of power density of 107 W/m2 the shape parameter (k) was 1.715 1.633 and 1.783 scale parameter (c) of 3.649 3.651 and 4.092 m/s the mean of wind shear coefficient was 0.19. The evaluation of wind energy for electricity generation by install the wind turbine of Nordex N50 from Germany and Vestas V90 from Denmark were capacity of 800 kW and 3 MW. It could produce annual electricity of 1761379 kWh and 3772400 kWh and the capacity factor show 25.13% and 14.35% respectively. Finally the results showed the northern area of Thailand was suitable for wind power development in further.