This study was undertaken to determine effect of bio-extract fermented from pig placenta and effect of wood vinegar solutions on seed germination percentage and speed of germination of 2 rice cultivars Chai Nat 1 and Sang Yod Phattalung. The experiment was conducted in factorial in completely randomized design with 2 factors and 4 replications. The first factor was ratios of the solutions to water and the second was duration for seed incubation. The results demonstrated that wood vinegar showed more positive effect on rice seed germination performances than that of bio-extract. Speed of germination was affected by an inter-action between the dilutions of the solutions and the duration for seed incubation. In Chai nat 1 experiment the seed soaked in 20 times dilution of bio-extract and subsequently incubated for 24 hrs increased speed of germination of the seed. While soaking the seed in 400 times dilution of wood vinegar and incubated for 24 hrs could enhance both percentage and speed of the seed germination. In Sang Yod Phattalung experiment soaking the seed in 50 times dilution of bio-extract and subsequently incubated for 48 hrs or soaking the seed in 300 times dilution of wood vinegar and incubated for 48 hrs could enhance both percentage and speed of seed germination. According to the results we concluded that soaking rice seed in bio-extract of pig placenta fermentation or in wood vinegar solutions could enhance the seed quality.

This paper presents a design of the control system to control AC/DC converter. Algorithm of a control system design consists of the output voltage loop control used a fuzzy gain scheduling of PI control and the current loop control used a hysteresis control which is described in this paper. The evaluation of the proposed control system is used to control an isolated CUK AC/DC converter operation with a 250W load and a -48V output voltage. The system is achieved as the following; the tight output voltage both the steady state operation and the transient response a power factor is nearly unity and the waveform of input current is nearly sinusoidal. In addition the control system design is simple and uncomplicated

The objectives of this study are to develop a management system for examination bank and an online examination. Working procedures were performed by analysis a traditional working system and problems study of user requirements design of a new working system and a development of the new system. PHP and JAVA programming language operating with MySQL for developments and a database management were used. The new system consists of 6 systems by operating as web application. Users are 3 groups that are teachers students and administrator. In the items analysis stem a reliability value was calculated using KR-20 and KR-21 of Kuder-Richardson. The level of difficulty and discriminating power were identified using choice analysis with 27 percentages of upper and lower technique. The new system was tested with 3 groups of teachers students and administrator. The evaluation was performed using questionnaires. The results of the evaluation shown the contentment is in good level. Accuracy of the system was measured by comparison between a traditional item analysis and the new system. The comparison results were not different. However the accuracy of item analysis results depends on knowledge of the students who are in testing.

The Applicability of the Royal Sufficiency Economy Principles to Community Enterprises Management in Surin. The objective was the possibility of applying the Royal Sufficiency Economy Principles. And compare investigate the possibility of applying the Royal Sufficiency Economy Principles. The sample is 316 firm from Community Enterprises in Surin is 1440 firm. The research found that Most of business was industry enterprise. Has capital an average of ฿146606 from private and relatives. The size of the enterprise community (NAV) of less than one million employs up to 10 people with qualifications below bachelor degree have annual sales of less than 2 million settlement enterprise in their local distributor. And supply of raw materials and equipment used in the production of their own local. The possibility of the application the Royal Sufficiency Economy Principles there is at a high level. And Compared to the possibility of applying found that communities that are difference characteristic there is a possibility of the application no difference on the 0.05 significance level.

The optimum conditions of extracting pectin from vegetables and fruits are apples grapefruit lemons and bananas were studied. It was found that pectin from grapefruit peel gave good physical property white and has a relatively highest yield. Therefore in this study was interested to choose grapefruit peel as raw materials to optimum the conditions of pectin extraction. In the process of pectin extraction the temperatures of the extraction were studied at various 50 60 70 80 and 90 ?C by using hydrochloric acid for 24 hours. It was found that when the temperature increased the pectin extract was increased while at 80 and 90 ?C have a similar effect. After that pH conditions of the extraction were studied by various acids such as hydrochloric acid nitric acid and acetic acid at the same concentration of 1.0 molar at 80 C for 24 hours (1440 minutes). The results found that hydrochloric acid gave maximum pectin extracted yield. Finally the extraction times were studied at 30 60 90 120 and 1440 minutes using 1.0 M hydrochloric acid. From this work can optimized the pectin extraction condition as of 80 C and the extraction time was 90 minutes that gave maximum yield of pectin. At the otherwise the times of extraction have no effect to the amount of pectin. The potential from this study had satisfactory results can be used to improve the extraction of pectin system.