In this study The paper aims to produce extracts from guava leaves. For use in food packaging. And to test their ability to inhibit bacteria. Staphylococcus aureus paper extracts from guava leaves. Because the bacteria Staphylococcus aureus to live in the air dust waste water food and milk supplies. The strain also grows well in climates with oxygen. The test extracts from guava leaves. A chemical properties of guava leaf extract has a pH of 5.4 + 0.02 acid content (% citric acid) was 1.2 ± 0.1 and the amount of phenolic total (mg gallic acid / g) levels. 63.1: 1.9 The performance of guava leaf extract in inhibiting bacteria. Staphylococcus aureus by means paper disc diffusion on agar Nutrient agar at 36 ° C for 24 hours diameter clear zone (cm.) Was 1.3 ± 0.5 and tested for the Minimum Inhibitory Concentration (MIC) by Broth Dilution Technique with. equal to 1.56% of extract of guava leaves

This project aims to study an effect of stabilizer on the ground pumpkin forming. There were 4 types of stabilizer used in this study which were carrageenan pectin flour and agar with a ratio of 10 20 and 30 percentage by mass. The physical and chemical properties of the sample such as color texture moisture content and sensory test were compared with a commercial streamed pumpkin. The results showed that the ground pumpkin could be formed using carrageenan and agar but the flour and pectin had no effect on the forming. Therefore the sample of ground pumpkin mixed with agar and carrageenan was further observed by measuring the physical and chemical properties. It was found that the properties of ground pumpkin mixed with 30% w/w of agar were the most similar to the commercial steamed pumpkin. The color of L* a* and b* of the sample were 46.15±1.23 11.42±0.51 and 29.75±2.46 respectively. The sensory test was analyzed by weight quality score the overall acceptance was 62.50%. In conclusion 30% w/w agar was the best stabilizer using in the ground pumpkin forming therefore this result would be used to develop a new product.

The objectives of this research aimed to study the appropriate ratio for making light weight brick which composed of the sawdust and water hyacinth and to study the efficiency of light weight brick. The research method was done by study the mechanical properties the compressive strengths and the physical properties with water absorption. The main materials were as follows: type 1-normal Portland cement lime gypsum aluminum powder ratio 30:9:9:2 and researchers determined 5 levels including of sand sawdust and water hyacinth according to the following proportions 40:5:5 30:10:10 20:15:15 10:20:20 and 0:25:25. The results revealed that the most appropriated ratio of the light weight brick was 40:5:5. The maximum compressive strength was 1.63 N/mm2. It is close to 2 N/mm2 from class 2 light weight brick standards value. The lowest value of water absorption was 514.29 kg/m3. It is close to 500 kg/m3 from water absorption of light weight brick standard value. Therefore these results supported the environmental conservation objective by increasing the economics values of sawdust and water hyacinth.

Design and development of solar cells in electric vehicle prototype intended to Design and development of solar cells in electric vehicle prototype Case study electric cars of Rajamangala University of Technology Phra Nakhon. The research process begins with the solar experiment model Solar Thin Film a bent size 19.2 x 9.5 cm technology has applications in Unmanned Aerial Vehicle install to a source of clean electricity generation using 80 Solar Thin Film Cells controlled by Arduino mega size 101.52x 53.3 mm Programming software by Arduino-1.6.9-Windows and Show the result at LCD Solar Monitor Charger from batteries store the electrical energy size 12V/28AH 6 pack for the results showed that such a circuit can charge electricity 5A to 1 hour and to expand the use of rechargeable battery electric prototype instead of using electric vehicle prototype from charging normally Requires 480 Solar Thin Film Cells in trial period hypothesis 6 hour/day. In term of investment evaluation simple payback period is expected to be 4 years. Considering sensitivity analysis it is found that the most sensitive factor is electricity cost cost Solar Thin Film and the cost of Evlink Fast Charge Solution respectively. The results of this study can be used to support decision making in design and development of electric vehicle prototype in the next generation more efficiently

This research was conducted with the aim to identify personal factors and the factors of the marketing mix that influenced the decision to buy beauty drinks. It also looked at the marketing mix factors that were associated with the decision to buy beauty drinks. A sample of 400 people was selected through purposive sampling and snowball sampling. The instrument used to collect data was a rating scale questionnaire and interviews categorized by their professions. The statistics used in this research were statistical hypothesis testing Pearson Correlation Coefficient qualitative analysis (interviews) t-test Independent and F-test at the level of statistical significance of .05. The results were as follows. 1) The analysis of individual factors showed that the majority were females between 26-30 years old with diplomas with an average income per month from 10001 to 20000 baht. 2) Personal factors influencing the decision to purchase beauty drinks were high in the overall purchasing decisions. 3) The result of the study to examine the relationship between the marketing mix associated with the decision to purchase beauty drinks was positively and moderately correlated with the marketing mix in 7 aspects.