The narrow slot loop antenna and linear slot antenna fed by microstrip line are designed for dual frequency at 2.44 GHz and 5.25 GHz on the standard of IEEE 802.11b/g (2.4{2.4835 GHz) IEEE 802.11j/a (5.15{5.35 GHz) and IEEE 802.16d (5.7{5.9 GHz). These structures are easy to adjust the length of slot antenna for dual frequency band. It can control the higher frequency band around 4.9 GHz to 5.8 GHz by linear slot antenna. Adjusting some parameters of narrow slot loop antenna will influence on the resonance frequency and bandwidth. By using IE3D software [1] the characteristics of antenna are investigated and analyzed including instance input impedance return loss and far field radiation patterns.

This paper presents a testing of three insulators namely solid fluid and gas for choosing the best electric insulators. In order to generate the ozone gas the insulator must be selected in electrode set. Nowadays the insulators do not have the optimal test procedure for getting total efficiency. Therefore in this paper a design of ozone generator is proposed by using the fundamental of electric field stress. The ozone generator is a coaxial cylindrical electric type that has solid insulator in center of glass tube. This solid insulator will be dielectric among the high voltage electrodes. Ozone gas will generate in this air gap. This paper also focuses on the insulator testing of three insulators. It will find the efficiency of 3 insulators and compares them with the density and stress of ozone gas. The experimental results show the performance and ensure the optimal ozone generator design.

This research aims to investigate the efficiency and quality of young rice planting machine which is suitable for the North Eastern part of Thailand. The investigation applies the notions of planting young rice manually by farmers into the design of a battery-driven young rice planting machine. The researcher started with the study of transplanting methods of agriculturists in the North Eastern part and the design principles of young rice planting machine. Next the components were calculated and engineering design was drawn. Then the machine was tested in terms of its efficiency and quality. The data were analyzed in terms of means. The results show that the efficiency of the machine regarding planting performance is 90 % the appearance of the machine functions applications engineering and safety achieve the average point of 3.70 which is considered satisfactory.

This article describes an efficient approach to the implementation of bit-serial lattice wave digital filters based on field programmable gate array (FPGA). In this paper a time schedule of all of the bit-serial two-port adaptors is presented as a bridge between conception and completion. Finally with the satisfying frequency response the filter is successfully tested by both computer simulation and real signal measured from the programmed FPGA.

The purposes of this study were 1) to study the basic recipe of Khanom Gleeb- Lamduan. 2) To study the types of Job’s Tears flour used as a substitute for wheat flour in the recipe of Khanom Gleeb-Lamduan. 3) To study the quantity of supplemented xanthan gum was studied in the recipe of Khanom Gleeb-Lamduan from Job’s Tears flour to improve texture. 4) To study the chemical composition of Khanom Gleeb-Lamduan from Job’s Tears flour. The results of the sensory quality evaluation with a 9-point Hedonic scale favorability score by 30 taste panelists found that the basic formula of Khanom Gleeb-Lamduan that was selected contained 55% of the ingredients including wheat flour soybean oil and icing sugar 27.50% and 17.50% respectively. The results of a study on the type of Job’s Tears flour suitable for substitute for wheat flour for the development of gluten-free Khanom Gleeb- Lamduan recipe. It was found that Khanom Gleeb-Lamduan made from dried milled job’s Tears flour had a higher score on the tasters favor than that made from commercial milled Job’s Tears flour and boiled Job’s Tears flour (p≤0.05). Tasters rated their preference for Khanom Gleeb-Lamduan from Jobs Tears flour with added xanthan gum to improve texture characteristics in the amount of 1% of millet flour preferring it over Khanom Gleeb-Lamduan with Jobs Tears flour added at the rate. 0.5% and at a rate of 2%. Khanom Gleeb-Lamduan had average liking scores in terms of appearance color smell taste texture (crusty) and overall liking was 7.33 7.40 7.86 7.53 7.76 and 8.10 respectively which were in moderate to high liking level. The approximate chemical composition of 100 g of Khanom Gleeb-Lamduan from JobsbTears flour contains 6.75 g of protein 27.46 g of fat 2.64 g of moisture 62.21 g of carbohydrates 0.94 g of ash and 522.98 kcal of energy which is similar to that of the basic recipe of Khanom Gleeb-Lamduan using wheat flour but it has a higher ash content than the basic formula. This is because Jobs Tears contains high amounts of many minerals. Khanom Gleeb-Lamduan from Jobs Tears flour is therefore a healthy snack for general consumers. In particular consumers with gluten intolerance can also eat it.