Electronic load is an importance part of power supplies testing system. For non-electronic load type it is required to replace a resister with a new one leading to complicated working procedure. The modern power electronic technology is employ to solve this problem. The electronic load can vary the value following user command. Imported electronic load is costly leading Thailand to have a balance of trade deficit. This article proposes design and implement of an economical cost 30V 1 k DC-Electronic Load controlled by Microcontroller. The tested results can confirm the validity of this proposed electronic load

The aims of this research was to study the general situation in aspects of productivity and marketing of Mao fruits in Sakonnakon. Cost and return marketing channel and marketing margin of Mao fruits were investigated during 2007–2008 using purposive sampling and descriptive analysis. Twelve gardeners who own the average 7 years Mao orchards in Pupan Kudbak Sawangdandin Nikomnam-oon and Warichapoom District in Sakornnakon province informed that the productivity of Mao fruits was 750 Kg/annum in average. The average price of Mao fruits was 25 Baht/Kg. The net returns of Mao fruits was 7216.89 Baht/rai/annum. Marketing channel of Mao fruits were fresh fruits eaten and used as raw material in fruit juice processing plants. The whole commodity of Mao in orchard was traded and distributed by middleman. Earnest money deposit was required. The price of Mao fruits was 25 -35 Baht/Kg for the processing plants. The profit was 9104.50 Baht/ton or 36.41% of net income.

The purposes of this research were: 1) to develop the database applications requesting the position of scouts at the National Scout Organization of Thailand (NSOT); 2) to validate the efficiency of the database applications; and 3) to measure the user satisfaction towards the database applications. Statistical tools used in this research are twenty – seven of scout supervisors one of personal staff one of system administrator and one of manager. By purposive sampling. Instruments used in the research are the development of database applications request the position of scouts at national scout organization of Thailand assessment form the effectiveness of the developed program and questionnaire to measure the satisfaction of the trial of the application developed. The research found that the efficient of the development of database applications at a good leve (X = 4.38) and the satisfaction of users was at very good (X = 4.60). Therefore the developed program can be applied to used to optimize the application for a position with scouts.

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.

Dipping of Nile Tilapia (Oreochromis niloticus) fillets in the mixture solution of 2.0% sodium pyrophosphate and 0.5%sodium triphosphate and coating with 0.00.30.60.9 % chitosan solutions drained packed in polyethylene bags well sealed stored at 4๐C for 15 days were evaluated. The results showed the moisture of all sample did not statistically difference and quite constant during storage. The pH and TVB-N value increased with the storage period for all sample Coating with low concentration of chitosan resulted in lower pH fillets than higher concentration. The decreasing of pH resulted in decreasing of Water Holding Capacity (WHC) of the fillets. Increasing chitosan concentration increased pH and WHC. The oxidation of the samples revealed that the Thiobarbituric acid(TBA) of 0.3% chitosan was maximum and lower with increasing of chitosan concentration. Increasing of TBA may be because of acidity of chitosan solution activated fat hydrolysis. Nevertheless chitosan coating effectively inhibited growth of microorganism in the fillets.