จำนวน Repository ( 255 )

ผลกระทบของระบบความปลอดภัยในงานก่อสร้างที่มีผลต่ออัตราผลผลิต กรณีศึกษา : งานบุผิวผนังกระเบื้อง
ผลกระทบของระบบความปลอดภัยในงานก่อสร้างที่มีผลต่ออัตราผลผลิต กรณีศึกษา : งานบุผิวผนังกระเบื้อง

The purpose of this research is to study the effect of a safety system provided for wall tile external building activity on productivity. The safety system composed of (1) stable scaffolding system (2) providing clean and not slip walkways on the scaffold (3) installation of handrails not less than 0.90 meters in height along sides of the scaffold (4) installing safety nets around outside perimeters of the scaffolding (5) indicating working area (6) installing stairs (7) providing protection for people who works below (8) providing tools and equipments for transporting material which are safe and ready for using and (9) providing personal protective equipment for workers. Cost of the safety system is 79318 baht for a wall tile area of 385 m2 or approximately 206 baht/m2. Productivity rates for prior and after the used of safety system are 1.91 and 1.85 m2/person/day respectively. The productivity declines for approximately 3 %. In addition our study found an impact of work is a height of Building the wall tile external productivity could decrease for 6 %.

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การศึกษาและพัฒนาระบบการอบแห้งข้าวเปลือกด้วยพาหะลมและเกลียวลำเลียง
การศึกษาและพัฒนาระบบการอบแห้งข้าวเปลือกด้วยพาหะลมและเกลียวลำเลียง

Moisture content has a marked influence on all aspects of paddy and rice quality. These issues also have significantly importance for rice industry and economy of Thailand. Many drying process such as spouted bed technique and fluidized bed technique are extremely studied in terms of instrument design and energy consumption. However these drying processes were not suitable for high economic rice. Because of these processes performed highly damaged kernels during drying process. The objective of this project we proposed the alternative drying system that perform low damaged paddy kernels. We also were design and fabrication drying system for paddy in terms of conveyer pipe. This machine have the performance including feed rate approximately 22.83 kg/hr. drying temperature 30-120ºC air velocity 0-1.5 m/s drying time 14.64-16.91 min and energy consumption 6.02 baht/hr. We improved our machine by drying the RD41 paddy at moisture content 28 (%w.b.). We also setup drying temperatures 40°C 45°C 50°C 55°C and 60°C with air velocities 0.7m/s 1.0m/s and 1.5m/s. We found that all drying temperatures have the final moisture content lower than 15 (%w.b.) and percentage of complete paddy after drying (HRY-paddy) more than 96%. For the kernels quality we found that HRY-Brown rice tend to increase with drying temperature increased. We also found that HRY-Unbroken kernels for polishing tend to decrease between drying temperature 40°C - 50°C for air velocities 0.7m/s and 1.5m/s. Therefore these results obtained can be such a high potential approach that can be used for further developing into rice economy and industry of Thailand.

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VDO online management system
VDO online management system

Video File Online Managing System Project is developing for improve management of video file in internal database. This system would be comfortable and reachable for all users of Faculty of Science and Technology. The system could be reachable sequence and input comments to video file. File Storage system has been developed on web application by PHP scripting language MySQL and FFMpeg for adjustment file. Video File Online Managing System could beachieve target of project

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Photo online management system
Photo online management system

Photo Online Management System. The System was developed to facilitate the management of photo within The Faculty of Science and Technology Rajamangala University of Technology Phra Nakhon. Such as photo uploading and downloading. This system is developed by using PHP AJAX CSS and jQuery including MySQL Data Base Management System. Development system by Web applications. To help Resource management a photo and to share the photo with anyone who wishes. By admin as administrator. The system integrity test. Test results was correspond to all defined scopes and the system performance. Test results can upload photo.

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แบบจำลองการควบคุมแรงดันเกินในระบบสายส่งกำลังไฟฟ้ำ
แบบจำลองการควบคุมแรงดันเกินในระบบสายส่งกำลังไฟฟ้ำ

This thesis offers the design of the impulse generator 1.2 / 50 μs which applies for studying and generating the lightning impulse to test the endurance of the electricity transmission line. Moreover this study analyses the factors which affects the impulse waveform by using Orcad program. The parts of prototype device can find in the general market. After the efficiency test of the electricity transmission line the result shown that the device should have the high capability to endure the temporarily high impulse. This minimizes the dangerous from the electricity system.

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