The study of Hydrilla (Hydrilla verticillata) effectiveness in water treatment was investigated using completely randomized designs with 4 Hydrilla densities: 0 (control) 30 50 and 70 plants. Each plot was experimented in round cement tanks added with sandy clay on the bottom. Fifty liters of canal water was then filled in. Along 6 weeks of the experiment each tank was aerated with no water exchanged. Results showed that there were no significant differences in values of temperature pH dissolved oxygen conductivity alkalinity hardness nitrite ammonia phosphate and biochemical oxygen demand in every treatment (p > 0.05). However the experimental plot with 50 hydrilla plants showed the best tendency in eradication of phosphate and improvement of biochemical oxygen demand at 86.00 and 45.73 percent respectively. On the other hand the experimental plot with 70 hydrilla plants showed the best tendency in eradication of ammonia and nitrite at 65.00 and 66.66 percent respectively.

The aims of this research are to review environment of floating market management to analyze potential of sustainable management and to develop strategies for developing sustainable management of Wat Takien Floating Market. Data were gathered by observations interviews focus groups and questionnaires and analyzed with Descriptive Analysis for Means Standard Deviations Factor Analysis and Canonical Correlation Analysis. Results were as follows: 1) Bangkuvieng canal on the eastern side of the market still has a nice natural view. The community cooperated well with each other. The market is organized by the temple committee which was found not to be well arranged at some point. 2) Factors that affect the potential of sustainable management of Wat Takien Floating Market include currect economic condition community local houses along the canal side Bangkuvieng canal geography policy and participation in management temple architecture inland walkway live Thai classical music band food and price of local product. 3) Strategies for developing sustainable management of Wat Takien Floating Market consisted of strategy for developing the floating market along with Buddhist traditions strategy for setting reasonable prices for local goods and strategy for organizing boat trip activity.

The objectives of this research were to study: 1) basic sweet bread recipe; 2) proper amount of ripe palm fruit pulp; 3) proper amount of yeast; 4) product acceptance; and 5) shelf life. A process of sweet bread production was studied with ripe palm fruit pulp supplement and the sweet bread formula was selected by acceptance through sensory test. Four levels of amount ripe palm fruit pulp studied were 15 20 25 and 30 percent of total ingredient weight. Four amounts of yeast were 0.6 1.0 1.4 and 1.8 percent of flour weight. Acceptance of sweet bread with ripe palm fruit pulp supplement was assessed for satisfaction in color smell flavor texture (smoothness) and overall satisfaction by 100 evaluators using hedonic consumer test. A 7-day shelf life was studied. Results showed that: 1) The second formula was the most accepted in color flavor and texture; 2) The proper amount of ripe palm fruit pulp was 15 percent; 3) The proper amount of yeast was 1.8 percent; 4) The product was accepted for 92 percent in color 94 percent in odor 86 percent in flavor 81 percent in texture and 88.6 percent in overall acceptance; and 5) Shelf life of the product was 3 days in room temperature by community product standard for bread with filling.

The purpose of this research was to construct the appropriate forecasting model for the export values of alcoholic beverages using three-time series analysis methods including Box-Jenkins method damped trend exponential smoothing method and combined forecasting method. Time series data from the website of Office of Agricultural Economics with total 199 months from January 1998 to July 2014 were used and divided into two series. The first 192- month data from January 1998 until December 2013 were used to build the forecasting models and the last 7-month data from January to July 2014 were used to compare the forecasting method accuracy via the criteria of the lowest mean absolute percentage error and root mean squared error. Research findings indicated that for all forecasting methods that had been studied combined forecasting method was the most accurate method and this model was when and represent the single forecasts at time t from Box-Jenkins method and damped trend exponential smoothing method respectively.

The purpose of this research was to construct an appropriate forecasting model for the export quantity of frozen and chilled chicken using three time series analysis methods including Box-Jenkins method Holt’s exponential smoothing method and damped trend exponential smoothing method. Time series data from the website of the Office of Industrial Economics with total 130 months during January 2004 to October 2014 were used and they were divided into two series. Fristly 120 months from January 2004 to December 2013 were used to build the forecasting models and lastly 10 months from January until October 2014 were used to compare the forecasting methods accuracies via the criteria of the lowest mean absolute percentage error and root mean squared error. Research findings indicated that all forecasting methods that had been studied damped trend exponential smoothing method were the most accurate method and showed the forecasting model as where m represented the number of periods to forecast ahead with the starting value was January 2014 (m = 1).