The purposes of the research were; 1) to develop the detection of the transparency of air dried rubber sheet (ADS) using solar cell module 2) to find the average voltage according to the standard ADS grade market level and 3) to construct predictive equation of output voltage of the transparency machine. Samples of this study obtained by a purposive sampling technique was the standard ADS of 652 sheets. The instruments consisted of a multi-meter and transparency machine. For statistical analysis t-test (independent samples) and f-test (one-way ANOVA) were employed. The findings revealed that: 1) The ADS transparency machine consists of solar cell module at the error of 6% 2) The average voltage according to the standard ADS classify market level of 1 2 3 and 4 are 3.41 2.80 2.49 and 1.91 V. respectively 3) The market level and thickness of ADS altogether were the variables that could predict the output voltage of the transparency machine at 86.5 %

This experiment was conducted to study on single cell protein production from copra meal residue by Saccharomyces cerevisiae and Bacillus subtilis as animal feedstuffs. The experimental design was 4x3 factorial in CRD experiment with two factors were design to experiment. The first factor was comprised of fermented period (0 15 30 and 45 days). While the second factor B was comprised of microorganism type (Saccharomyces cerevisiae Bacillus subtilis and Saccharomyces cerevisiae combined with Bacillus subtilis). The results showed that interaction between factor A and B on pH (4.00-4.53) and percentage yield (29.21-33.80) were highly significantly different (P<0.01). However Incubation temperature were not related between factor A and B. Additional both factor have no effect to incubation temperature (P?0.05). For nutrients composition the group was fermented Saccharomyces cerevisiae combined with Bacillus subtilis showed higher Crude Protein than other treatments (P<0.01). Optimum of period at days 45 showed that crude protein 14.77 percent was significantly (P<0.01) and pepsin digestibility 66.60 percent was significantly (p<0.01)

This research was aimed to study the effect of binders on cracking behavior of high strength concrete under restrained shrinkage condition. The cracking behaviors of concrete that study were cracking age in uniaxially restrained shrinkage test shrinkage rate free shrinkage crack propagation and strength of concrete. The binders used in this study were fly ash and limestone powder. The weight percentage of replacement of cement by fly ash and limestone powder were 30 and 10% respectively. The water to binder ratios was 0.35. The results indicated that the influence parameters of shrinkage cracking were type of binder amount of free shrinkage shrinkage rate and tensile creep of concrete. The use of fly ash and limestone powder could reduce free shrinkage and shrinkage rate of concrete and result in the longer cracking age than cement-only concrete. The tensile creep of cement-only concrete was higher than that of limestone powder concrete and fly ash concrete respectively

The objectives of this study was to evaluate effects of cryoprotectants on Dorab wolf herring gel qualities using sucrose (3 and 6%) with sodium tripolyphosphate (STPP 0.3%) as cryoprotectants at 0 3 and 6 freeze-thaw cycle (-18 C 18 hr. freezing and 5 C 6 hr. thawing). The results showed that added 3 and 6% sucrose in combination with 0.3% STPP to washed minced fish resulted in whiter gel than washed minced fish with no cryoprotectants and unwashed minced fish at 0 3 and 6 freeze-thaw cycles (P0.05). Besides expressible moisture of washed minced fish with cryoprotectants added was found lower than washed minced fish with no cryoprotectants and unwashed minced fish at 0 3 and 6 freeze-thaw cycle (P 0.05). Textural properties i.e. washed minced fish with cryoprotectants gel strength (breaking force g) was higher than washed minced fish with no cryoprotectants at 0 freeze-thaw cycle but gel elasticity (deformation cm.) was not statistically different (P>0.05).

This research aims to collect and analyze financial data as well as assess financial feasibility and analyze business environment for investment in rice seed production of rice community center in Muang district Phitsanulok. Primary data in financial information used in the study were collected from rice seed center and rice community center. Secondary data were collected from documents and information of both government and private agencies. The research found that rice community center in Muang district Phitsanulok gained rice seed support from the Rice Department for seed production. However there were problems in production management that were not in accordance with rice seed production standard. Therefore the center had to change it operation from manufacturer to be buyers of rice seeds for its members. Financial analysis revealed that in terms of rice seed production cost the total cost per rai was 3800 to 7500 baht depending on the method of rice growing. Income from sale could be classified as sale price per sack (25 kg) at 575 baht per sack and sales price per ton from 11000 to 15000 baht. Analysis of business environment of the community center showed that the existing condition did not support business performance. Thus the possibility of investing in rice seed production was low.