The purposes of this research were to investigate anaerobic digestion of concentrated food waste in biogas production system at mesophilic temperature (37 C). The effect of grinding and pH controlled at 6.20 and 7.00 on methane production were also studied. It was found that the ability of mix bacteria which had initial concentration of 2100 mg/l for digesting concentrated food waste with grinding was higher than that without grinding because of the increase in surface area (about 1.37 time). In this system the optimum condition for bacteria growth was found at pH 7.00. Under optimal condition the digestion efficiency in term of chemical oxygen demand (COD) removal was 18.81% higher corresponding to an increase in methane production rate (19.10%) than other conditions

Objectives of this research are to select concentrated Thai fragrance formula for evaluation by sensory test and quality test using Thai Community Products standard for fragrance and to study consumers’ acceptance. This experimental research used 2 groups of population: 25 specialists and 300 personnel of Rajamangala University of Technology PhraNakhon. Methods used for analysis in this research were sensory test products standard test and questionnaires. Statistical analysis included Percentage Mean and Standard Deviation. Results found Thai fragrance formula 2 received the highest satisfaction when compared with formula 1 3. The evaporation method got higher satisfaction than dried powder method both before and after mixing with water. Overall satisfaction of dissolving 50 g of products in 600 ml of water had the best satisfaction level. The product passed the standard test at very good level Most respondents were female with Bachelor’s degree with civil servant career. The product which had been diluted with water received better acceptance in all aspects than the product which had not been diluted with water. Satisfaction in concentrated Thai fragrance formula had high score because it was easy to use and keep If this product was sold. Most respondents thought that Thai perfume can be used in all Thai ceremonies at the best price of 30 Bath.

The objective of this research is to construct the appropriate forecasting model for the export quantity of concentrated latex by the three time series analysis methods which are Box-Jenkins method Winters’ multiplicative exponential smoothing method and combined forecasting method. Time series data from the website of Office of Agricultural Economics during January 1998 to February 2014 (194 values) are used and divided into two series. The first 182 values from January 1998 until February 2013 for the models prediction and the last 12 values from March 2013 until February 2014 for comparison the performance of forecasting models via the criterion of the lowest root mean squared error and the criterion of the highest correlation coefficient between existing values and forecasted values. Research findings indicated that for all forecasting methods that have been studied the most powerful method is the combined forecasting and the forecasting model is where and represent the single forecasts at time t from Box-Jenkins method and Winters’ multiplicative exponential smoothing method respectively.

The objective of this study was to determine the effects of malate level and yeast in concentrate on ruminal fermentation and digestibility of nutrients in heifers. The results revealed that rumen fermentation ruminal microorganisms and digestibility of nutrients were significantly different (P<0.05) as affected by malate level and yeast. In conclusion the combined use of concentrate containing high level of cassava chip at 70%DM with malate at 1000 g and yeast at 2000 g in concentrate could improve rumen fermentation and digestibility of nutrients in dairy heifers.

This study surveyed seventeen wastewater treatment plants in concentrated latex rubber and seafood industries in southern Thailand. The researchers concerned mainly in the bulking sludge problems caused by filamentous bacteria. Wastewaters from those factories contained high organic contents high BOD5 and TKN concentrations. All of the existing activated sludge process were equipped with other pre- and post-treatments. Sixteen of them were concerned with only carbon and suspended removal. They were operated with high hydraulic retention time (HRT) and low food per microorganism ratio (F/M ratio) which are the main causes of bulking sludge problem. Most operators faced up with this problem but could not realize the reasons and solutions. This study observed their settle ability and presented filamentous bacteria in each plant. It can be evidently seen that some filamentous bacteria such as type 0041 and Nostocoida limicola II appeared at seafood treatment plants only and type 1863 found in rubber treatment plants only. This can be affirmed to the nature of influent composition of wastewater.