The purpose of this research was to design and develop an internet management system using radius protocol for a school. The system was developed by PHP language MySQL database and radius protocol. It allowed an administrator to grant users permission to access the internet manage their accounts check their status and record their usage history in files in addition to teachers being able to limit the use of the internet in their classrooms. The system evaluation process was divided into two parts. First the efficiency of the system was evaluated by the administrator and it was found that the system can work as required. Second the system performance was evaluated in terms of network security functional requirement and processing speed by the completion of a questionnaire by five experts. User-friendliness was evaluated by the completion of a questionnaire by 115 teachers and students. Results showed that the average efficiency was 4.22 with a standard deviation of 0.07. It can be concluded that the effectiveness of the developed system was at a high level and its application was beneficial for other organizations

There has been an extensive use of fiberboards in the furniture industry. Therefore materials containing glue are applied to develop these fiberboards. This research investigated sawdust-produced fiberboards using lac as the binder and aimed to; (1) study the appropriate mixture proportions of sawdust and lac as the binder and; (2) explore the physical and mechanical properties of different mixture proportions of sawdust and lac at 5 wt% 10 wt% 15 wt% 20 wt% 30 wt% and 40 wt%. The research methods involved selecting sizes of dried sawdust and grinding with lac and alcohol. Then the mixture was pressed in a hot-pressing machine. After that the produced fiberboards were tested using medium-density fibreboards Thai Industrial Standard (TIS 966-2547) in a laboratory. The results showed that the appropriate proportions was 15 wt% which met the standard defined in Thai Industrial Standard (TIS 966-2547). The fiberboards could replace medium-density plywood and could be used in furniture and the home decorative product industry.

The research aimed to analyze and compare contents of accumulated residue of chlorpyrifos chromium lead and cadmium in five varieties of vegetables in Loei River Loei Province. Five varieties of vegetables such as Vegetable fern (Diplazium esculentum Limnocharis flava (L.)) Limnocharis flava (L.) Buch Lasia spinosa (L.) Thwaites swamp cabbge (Ipomoea aquatica Forsk) and water mimosa (Neptunia oleracea Lour.) were collected during winter summer and rainy seasons from Phu Luang Mueang Loei and Chiang Khan District. Chlorpyrifos was analyzed by high performance liquid chromatography (HPLC). The results showed that the highest chlorpyrifos contents were found in vegetables in winter and summer season in the amount of 0.04±0.00 mg/kg. Analysis of all three heavy metals were carried out dry ashing at 500C and acid digestion with nitric acid prior to analyzing by flame atomic absorption spectrophotometry (FAAS). The results showed that cadmium accumulation in the highest content among all metals in water mimosa (Neptunia oleracea Lour.) in summer season from Phu Luang District (1.83±0.01 mg/kg). The second highest metal content was lead which has found in swamp cabbge (Ipomoea aquatica Forsk) in summer from Mueang Loei District (1.40±0.08 mg/kg). chromium showed the lowest content in Limnocharis flava (L.) Buch in winter from Mueang Loei District (0.47±0.04 mg/kg). The contents of chlorpyrifos and heavy metals were not exceed the legal limits set by International Standard Food and Ministry of Republic Health No.98 of Thailand except Ipomoea aquatica Forsk which collected in summer that showed the lead content higher than the legal limits.

The purpose of this study was to produce catfish Som-fug for compare some characteristics between and three commercial brands of Som-fug (brand A B and C) which produced from other fresh water fish as a guide to develop Som-fug from catfish. For physical properties catfish Som-fug were 3.54±0.20 cm (width) 6.38±0.25 cm (length) 1.34±0.10 cm (height) and 2.50±1.4 g (weight) which is similar to that of brand C. Color analysis of un-fried catfish Som-fug showed light color that L* was 70.78±0.13 a* and b* were 5.06±0.53 and 11.50±0.31 respectively. Hue value was 74.42±0.25 value and chroma were 6.84±0.39 and 16.20±0.11 respectively. Som-fug from different brands were different in term of texture. The gumminess and chewiness values were significantly higher in brand B (p≤0.05) whereas the hardness and springiness did not differ significantly among the four different brands (p>0.05). For physio-chemical properties Som-fug produced from catfish had 1.70 % total acidity pH value was 4.50 and moisture content was 70.28% which was not different from that of brand B. However aw value did not differ among all of the Som-fug (p>0.05). The microbiological quality of the four Som-fug products analyses revealed the presence of Salmonella spp. Staphylococcus aureus Escherichia coli and mold count not more than standard (Thai Community Product Standard 471/2555) except brand B and C mold count was more than 100 CFU/g. For Sensory evaluation no differences in color flavor and taste were observed between catfish Som-fug brand A and brand B (p>0.05). Whereas catfish Som-fug gained the highest score in texture attribute which no differ from brand C (p>0.05).

This paper presents an efficient algorithm for optimization of radial distribution systems by a feeder reconfiguration to balance feeder loads and eliminate overload conditions. The system load-balancing index is used to determine the loading conditions of the system and maximum system loading capacity. The index value has to be minimum in the optimal feeder reconfiguration of load balancing. A method based on Tabu search algorithm The Tabu search algorithm is employed to search for the optimal feeder reconfiguration. Simulation results for a radial 69-bus system with reconfiguration and capacitors placement. The study results show that the distribution system with capacitor placement and optimal on/off patterns of the switches feeders reconfiguration can be load balancing in distribution systems.