The objective of this research was to design and development of a continuous flow paddy dryer with infrared radial radiation technique. The prototype of dryer consists of two concentric circular cylinders cylinders which the paddy drying chamber is height of 1 m. The inner cylinder has diameter of 26.5 cm made from glasses and outer cylinder has diameter of 29.5 cm made from perforated (1.75 mm) steel sheet. At the center of cylinders installed 1200 w of electric infrared heater. A hopper was installed on the top of the chamber while 120 w of blower and paddy flow control were installed at bottom of chamber. The performance of the dryer in terms of specific energy consumption (SED) drying rate (DR) and quality of paddy i.e. head rice yield (HRY) and whiteness index (WI) were evaluated by drying 15 kg of paddy with initial moisture content of 23-26% (w.b.) by using the drying conditions of 80oC of drying chamber temperature 1.075 m3/min of air flow rate and 0.837 1.228 1.875 and 2.308 kg/min of paddy flow rate. The results found that paddy flow rate at 1.875 kg/min is the optimum condition because gave the highest DR lowest SEC and rice qualities (HRY and WI) closely to control.

The research purposes were aimed to study the demand for Thai scented popped rice packaging to develop Thai scented popped rice products of a handicraft community in Bang Kaew Sub-district Bang Phli District Samutprakarn Province and transfer the obtained knowledge to the interested one and community. The population and samples of the research study on the demand for Thai scented popped rice packaging product development from a handicraft community in Bang Kaew SubdistrictBang Phli District Samutprakarn Province were 50 handicraft workers including 38 womenmostly housewives and 12 men. Most of their professions were labors aged between 31 and 60years old. The samples that were 31-40 years old were accounting for 20 percent 41-50 years oldaccounting for 44 percent and 51-60 years old accounting for 20 percent of the group. The research tools used to collect data was the questionnaire administered to evaluate the satisfaction of the Thai scented popped rice packaging. The results of the study revealed their needs on these following features: the materials used in the production of Thai scented popped rice packaging to have a mixture of paper and plastic accounting for 54 percent and the environmental -friendly packaging accounting for 26 percent. In terms of the packaging size 64 percent of the group agreed with the size of 21.0x29.7 cm (A4) and 36 percent for 14.85x21.0 cm (A5). Concerning the objectives of the use of the Thai scented popped rice products 66 % was used as presents and 34% as souvenirs. In relation to the distributing location 54 percent believed the products should be available in the provincial souvenir shop and pricing should base on the size of Thai scented popped rice packaging: 21.0x29.7 cm. (A4) priced 500-800 Baht accounting for 36% and 14.85x21.0 cm. (A5) priced 200-300 baht or accounting for 30 percent. The majority of the 30 participants were female accounting for 10.00% aged 46-55 years old or 46.67% revealed in the evaluation that their satisfaction regarding the project was at the highest level with the mean of 4.65 or 91.67%.

The objectives of this research were to study the cost structure of rice cultivation with the activity-based costing method and to compare the cost structure of rice cultivation with the activity-based costing method in Chaiyaphum Province. The sample of this research was 50 rice farmers in Ban Khwao District and 50 rice farmers in Khon Sawan District. A questionnaire was used to collect data. Data were analyzed using descriptive statistics including percentage average standard deviation and t-test dependent samples. The results of this study showed that the cost structure of rice cultivation using the activity-based costing system method in Chaiyaphum province consisted of direct material cost direct labor cost and production cost. The direct material cost structure of Ban Khwao district was 232945 baht meanwhile the direct material cost structure of Khon Sawan district was 167850 baht. The direct labor cost of Ban Khwao district was 503600 baht meanwhile direct labor cost of Khon Sawan district was 473250 baht. The production cost of Ban Khwao district was 122610 baht meanwhile the production cost of Khon Sawan district was 121320 baht. The comparison of cost structure of rice cultivation with the activity-based costing method of Chaiyaphum Province showed that total cost of Ban Khwao district was 861605 baht meanwhile total cost of Khon Sawan district was 764970 baht. This implied that total cost of Ban Khwao district was higher than that of Khon Sawan district.

The aims of research were to study (1) a basic formula of rice noodles’ production. (2) the production of jobs tears flour and rice flour in rice noodles’ production. (3) the quantities of using jobs tears substituting for rice flour in noodles’ production. And (4) consumers’ acceptance of rice noodles product from jobs tears flour. The results showed that the first formula was chosen to be the basic formula. This formulation containing 10% rice flour 3% tapioca flour 26% water and 0.5% vegetable oil. The results of physical qualification between jobs tears flour and rice flour showed that the lightness (L) of jobs tears flour lower than the lightness (L) of rice flour (p≤0.05). And the value (a*) showed redness and the value (b*) showed yellowness higher than rice flour (p≤0.05). Humidity and water activity (aw) of general rice flour is not different from jobs tears flour considered by sensory test with ratio of jobs tears flour to rice flour of 20:80. This ratio got more preference the ratio 40:60 and 60:40 (p≤0.05). According to the consumer test (100 consumers) the Noodles by Partially Substituting Rice Flour with Jobs tears Flour was accepted as the novel and delicious product by 98% consumers. Moreover and 92% of consumers decided to buy the product containing 250 g in the plastic bag with the price of 25 Baht.

The objectives of this research are to propose a model for estimating and detecting rice yields in Thailand to investigate the factors related to the rice yields to find the trend and to construct the maps of rice yields in Thailand. A linear mixed model (LMM) including the spatial effects which follow the conditional autoregressive model (CAR) and the time effects which follow the first-order linear autoregressive (AR(1)) model is proposed. The estimated rice yields are used to construct the rice yield maps in Thailand. The dependent variables are the rice yield in each month of each province. The factors considered are rainfall average temperatures and regions. The results indicate that the factors enfluencing the rice yields are rainfall average temperatures and regions (North Northeast South East West Central region is a refrence region). The trend also effects the rice yields. The rice yeilds maps are easy for readers to identify which areas have high or low yields and easy to compare the yields among areas by looking at their different colors.