Ceramic Bismuth Sodium Samarium Titanate - Barium Titanate at the concentration of samarium 0.04 mol% was preparing by ball mill technique. This research has increased the temperature in the combustion process at different temperatures from 940960 and 970 degrees Celsius for 7 hours. The results showed that firing at different temperatures made the ceramic beads very dense. In addition the study of the crystal structure by XRD technique to study the structure of the ceramic BSNT-BT found that the structure is the same substances in the ceramic group BaTiO3. The results of the study of dielectric properties and ferroelectric properties It was found that the dielectric and P-E hysteresis loops were related and tend to correlate with increasing density with sintering temperature. The mechanical properties of ceramics were tested by measuring the hardness of ceramics at different temperatures with temperatures affecting the changes in various properties of ceramics BSNT-BT.

This research is to develop and experiment the hybrid solar dryer by using cultivated banana as the ingredient in the experiment. The objective is to design create and test the hybrid solar dryer that using heat energy with infrared heater. The result from the experiment of drying cultivated banana at night-time by using heat energy from infrared heater is found that at night-time experiment cultivated bananas moisture is decrease more than at day-times experiment for 61.25 %. The temperature inside the hybrid solar dryer at night when using heat energy from infrared heater is at 49.1-55.0°C. Using heat from sunlight together with infrared heater cause the cultivated bananas moisture to decrease better approximately 27 % when compare to drying with heat energy by only sunlight.

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.

The purpose of this study is to produce the soil improvement materials from food waste and water hyacinth by using a dehydration process. The experiments were divided into two parts : 1) the study of the optimum temperature and time for converting food waste and water hyacinths to soil improvement materials by determining the temperatures of 100 °C 150 °C and 200°C in the periods of 1 hour 2 hours and 3 hours respectively 2) the study of nutrient content in the materials before and after mixing into the soil for 5 days. The soil used in the experiment was sampled from Sai Ma Subdistrict Nonthaburi Province. The parameters used to evaluate the ability to improve the soil quality were soil moisture pH electro conductivity total nitrogen total phosphorus total potassium and organic matter. The results showed that the optimum temperature for drying the food waste was 150°C for 2 hours and the optimum temperature for drying the water hyacinth was 200°C for 3 hours. When the materials were mixed into soil it found that the soil drainage was improved. Mixing the materials into soil could increase the pH value from 5.2 to 5.4 and increase the electrical conductivity from 0.72 mS/cm to 14.78 mS/cm. Besides the plant nutrients including Nitrogen phosphorus and potassium also increased after adding soil improvement materials.

The purposes of this research were to compare the differences of the individual characteristics with performance of employees in state- owned enterprises. To study motivation affecting the work efficiency of the employees in the state enterprise unit. To study the principles of good governance affecting the work efficiency of employees in state enterprise agencies. To study of motivation and good governance principles affecting the efficiency of work performance of employees in state enterprise units The sample used in this study was 56 employees of state enterprise organizations in Thailand. 370 people by distributing questionnaires as data for data collection. The statistics used for data analysis were frequency percentage mean and standard deviation t-test f-test (One Way ANOVA). The relationships were used in Pearson s correlation analysis. Multiple linear regression analysis. The analysis results showed that personal characteristics such as gender age education level Income per month job position job duration. There are no significant differences in the efficiency of the performance of the employees in state enterprise units. Motivation affects the efficiency of work performance (quality of work) of employees in state enterprise units at a moderate level. Motivation affects the efficiency of work performance (quantity of work) of employees in state enterprise units at a moderate level. Motivation affects the efficiency of work performance (time) of employees in state enterprise units at a moderate level. Motivation affects the efficiency of work performance (operating cost) of employees in state enterprise units at a moderate level. Good governance affects work efficiency (quality of work) of employees in state enterprises are at a high level. Good governance affects work efficiency (the quantity of work) of the employees in the state enterprise department is at a medium level. Good governance affects work efficiency (time) of the employees in the state enterprise department was at a medium level. Good governance affects work efficiency (operating expenses) of employees in state enterprise departments are at a medium level. Motivation and good governance principles affect work efficiency (quality of work) of employees in state enterprises are at a high level. Motivation and good governance principles affect work efficiency (the amount of work) of employees in state enterprise departments at a medium level. Motivation and good governance affect the efficiency of work (time) of employees in the department at a moderate level. Motivation and good governance principles affect work efficiency (operating expenses) of employees in state enterprises at a medium level. With a statistical significance of 0.05 .