จำนวน Repository ( 891 )

การพัฒนาบอร์ดไมโครคอนโทรลเลอร์เพื่อใช้ตรวจสอบระดับปริมาตร น้ำบาดาล
การพัฒนาบอร์ดไมโครคอนโทรลเลอร์เพื่อใช้ตรวจสอบระดับปริมาตร น้ำบาดาล

Water became an important factor for propelling production process of any industries or factories and groundwater was option for production cost reduction especially in areas where had no surfacewater. B.Foods Product International Company Limited an affiliate of Betagro Group was located in Lop Buri Province to daily consume huge quantity of groundwater for production process in its factory. Measuring and recording levels of groundwater in 2 ground tanks related to volume of the water at time point of every 3 hours must continually be done every day in order to prevent lack of water fed into the factory that may impact of its production process. The main problem was caused of unexpected non-working of pumps. Knowing fluctuation of water levels could provide their immediate improvement and recover to avoid serious impacts. A microcontroller board could be employed to control groundwater volume in order that the company could closely follow up levels of groundwater in the ground tanks in real time and continuity. This study went on designing the microcontroller board for managing utility system and maintenance by using with level meter and wireless receiver and transmitter for testing working efficiency every 3 hours of each everyday during 1 February 2016 till 11 March 2016 totally 40 days. It was compared with those of same duration done manually. The findings revealed that the figured from 2 methods became similar and had very close relationship with each other. This could indicate that the simulated microcontroller board could be employed to automatically control groundwater volume efficiently. The company could bring it to appropriately trace levels of groundwater in the tanks in accordance with water usage behavior in each period of time for disruption of production process caused of insufficient quantity of groundwater. And this could be adaptable benefits for improvement of any organizations and also for any further studies

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การออกแบบและพัฒนาเทคโนโลยีโซล่าเซลล์ในยานยนต์ไฟฟ้าต้นแบบ
การออกแบบและพัฒนาเทคโนโลยีโซล่าเซลล์ในยานยนต์ไฟฟ้าต้นแบบ

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

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การใช้สารฟีนอลิกจากดอกชมจันทร์ในการผลิตนมพาสเจอไรซ์
การใช้สารฟีนอลิกจากดอกชมจันทร์ในการผลิตนมพาสเจอไรซ์

The fresh moonflower (FM) was dried in hot air oven at 50 C 48 hours as the dried moonflower (DM) 7.37 %. Then DM was extracted by ethanol concentration 95% and using the evaporator to evaporate ethanol solution. This study aimed to study the process which extract phenolic compounds (PC) from FM and formulate PC in pasteurized milk. From the results PC was 68.11±1.44 μg/ml. The final formula of pasteurized milk was added PC 1g /200 ml and was pasteurized at 72 °C 15 s. The (L*) 85.91±0.07 (b *) -1.92±0.06 (a *) 17.13±0.24 pH 6.58±0.00 total soluble solid 12 ˚Brix. It could be stored at 4 C for 7 days.

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การพัฒนากลยุทธ์ทางการตลาดของธุรกิจอาหารคลีนสำเร็จรูปในเขตกรุงเทพมหานคร
การพัฒนากลยุทธ์ทางการตลาดของธุรกิจอาหารคลีนสำเร็จรูปในเขตกรุงเทพมหานคร

This research was aimed to identify personal factors and consumers’ needs of the marketing mix as well as to study of the strategy development of instant clean foods business in Bangkok Metro Metropolis. To obtain the data a questionnaire was designed to gather the information from the 400 samples in the study selected by convenience sampling in five out of 50 districts from 50 districts. In-depth interviews were also arranged among five respondents. The statistical analysis was completed by percentage mean and SD. The hypothesis was tested by the t-test F-test and Oneway ANOVA. To test differences in pairs LSD was applied at the level of statistical significance at the 0.05. This research employed mixed research method: the quantitative research looked into the quantitative data obtained from the respondents who consumed instant clean foods. Qualitative research relied on the data from the indepth interviews of the clean food business operators. Concerning the marketing mix the targets groups and marketing strategies the research revealed most respondents were single female who aged 21-30 years old with bachelor’s degrees. The average incomes were 10000 - 20000 baht. Their needs related to the marketing mix were the importance of products relevant with freshness and cleanness. They highly focused on food prices and made a wide variety of payments (cash credit card online etc.) The consumers also paid attention to distribution channels at a high level (store sale convenience stores various online channels etc.) and convenient to buy from various reasons such as stores that were close to work schools and shopping malls. The consumers also paid high focus on the clean food promotion.

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การออกแบบเครื่องย้อมเส้นด้ายไหมและด้ายฝ้ายแบบกึ่งอัตโนมัติเพื่อพัฒนาผลิตภัณฑ์ชุมชน ศูนย์หัตถกรรมพื้นบ้านนาโพธิ์ บุรีรัมย์
การออกแบบเครื่องย้อมเส้นด้ายไหมและด้ายฝ้ายแบบกึ่งอัตโนมัติเพื่อพัฒนาผลิตภัณฑ์ชุมชน ศูนย์หัตถกรรมพื้นบ้านนาโพธิ์ บุรีรัมย์

The purposes of this research were to design and create dyed silk yarn and cotton yarn machine for community enterprises of Ban Na Pho woven group Na Pho district Buriram province. All materials were made of stainless steel and the principle of rotation of the yarn skein which was hung with spindle yarn inside the dye tank. Dyeing process began by mixing color tanks in the exterior size for diameter ๓๐๐ mm. Adjust the temperature inside the dye bag by the boiler was attached below. Using pump in dye tank for rotating the heat with stainless steel pipe in ๑๑/๒ inches and ๓ inches x ๑/๒ inches and the rectangular tank was ๖๐ cm. wide ๙๐ cm long and ๑๖๐ cm. high. It had ๕ mm. of plastic lid cover in front of and a channel that looked at the attachment of color yarn. The lid had ๒ levels adjustable lift spring lock and ๒-axis spindle yarn. It was triangular shaped drilled holes spray to ๑ mm. on the spindle with a diameter of ๑๕ cm. and ๖๐ cm. long rotating at ๑๐ rpm strength by using electric motor size ๐.๕ HP used ๒๒๐ volts. It could be rotated left and right with the gear ratios around ๒๐:๑ ๒ adjustable that were automatic with programming on the control box and simple pattern. the spray dyed paint had ๑ liter water pump to control pressure valve for opening and closing to dyed water flow regularly by the heat from the LPG gas with a head size of ๓๐ cm. and adjust the temperature up to ๑๒๐ Celsius degree. It was showed the temperature measurement of water dye with pressure gauge and temperature gauge. The efficiency of this dye can be dyed silk yarn and cotton yarn per ๕ kg. to ๑๐ kg. which was a medium-sized textile production to the local community enterprise and applied in the preparation of yarns before dying such as peeling glue and bleaching.

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