Faculty and Institute (คณะและสถาบัน): Recent submissions
Now showing items 3401-3420 of 3484
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Pore structure changes of blended cement pastes containing fly ash, rice husk ash, and palm oil fuel ash caused by carbonation
(JOURNAL OF MATERIALS IN CIVIL ENGINEERING, 2009)In this paper, the effects of carbonation on pore structure of blended pozzolan cement pastes were investigated. Ordinary Portland cement _OPC_ was partially replaced with ground palm oil fuel ash _POA_, ground rice husk ... -
Effect of grinding on chemical and physical properties of rice husk ash
(International Journal of Minerals, Metallurgy and Materials, 2009-04)The effect of grinding on the chemical and physical properties of rice husk ash was studied. Four rice husk ashes with different finenesses, i.e. coarse original rice husk ash (RHA0), RHA1, RHA2, and RHA3 were used for the ... -
Development of Classified Fly Ash as a Pozzolanic Material
(Asian Network for scientific information, 2008)This research studies the potential for using classified fly ash from Mae Moh power plant in Thailand as a pozzolanic material. Three different fly ash finenesses viz., coarse Original Fly Ash (OFA), Medium Fly Ash (MFA) ... -
An Experimental investigation of the carbonation of blended portland cement palm oil fuel ash mortar in an indoor environment
(SAGE Publications, 2009)In this research, palm oil fuel ash was utilized as a pozzolanic material in blended Portland cement mortar. The mortar was tested on the normal compressive strength and the negative effect of carbonation in indoor environment ... -
Analysis and control of Shunt-Compensator for mitigating Unbalanced Voltages
(IEEE, 2008-08-05)This paper presents the analysis and the control of shunt-compensator for improving unbalanced voltages of power distribution systems in Thailand. The shunt-compensator is connected to the low voltage level in power ... -
การวิเคราะห์ระบบแถวคอย, กรณีศึกษาการรับสมัครนักศึกษามหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร วิทยาเขตพระนครเหนือ
(2008)The objectives of the study were to find the arrival rate of applicants who applied to study at Rajamangala university of Technology Pra Nakhon, North Bangkok Campus, the service rate of admission officers, and to analyze ... -
การวิเคราะห์ความอยู่รอด : การศึกษาการออกกลางคันของนักศึกษา ปวส. สายช่างอุตสาหกรรม มหาวิทยาลัยเทคโนโลยีราชมงคลพระนคร วิทยาเขตพระนครเหนือ
(2008)The objectives of the study were to find the survival probabilities, the hazard rates of dropping out of the technical diploma level students at Rajamangala University of Technology Phra Nakhon, North Bangkok Campus, and ... -
Using Condensate Water to Reduce Heat for Finned-Tube Condenser of Air Conditioning System
(2007)Now a day the mostly air condition are use vapor compression refrigeration system in which R-22 refrigerant is used as a working substance. From the results of study, it found that the quantity of water vapor or moisture ... -
The factors of resource and educational investment affecting to the number of the post graduate students of Rajamangala University of Technology Phra Nakorn
(2008)The objective of this research is to study the factors of resource and investment affecting to the number of post graduate students of Rajamangala University of Technology Phra Nakorn. The samples of this research are to ... -
The Analysis of high-Voltage Electric Field Stress in Lp and Ls coils of Tesla Transformer for studying the efficiency design
(icee2008, 2008)This article presents The Analysis for high-Voltage Electric Stress in Lp and Ls coils of Tesla Transformer for studying the efficiency design. The tesla transformer is designed at 350kV rating Voltage and 120 kHz resonant ... -
Study of Ozone Generator with Electric Fields Distribution on Water Surface
(ISH 2007, 2008-08-27)This paper proposes a study of an Ozone generator. The generator under the study is designed using the electrode with uniform field. The electrode is constructed in the plane shape with positive potential. The transformer ... -
Power Efficient Ant Colony System Wireless Sensor Networks Using Adaptive Node Function
(มหาวิทยาลัยราชภัฎมหาสารคาม, 2008-11-23)Today wireless sensor networks are developed and comprised of a small fully autonomous processing, communication and sensing devices. It has been restricted power supply, low computing power. WSNs work in vast area, ... -
Low Rate Wireless Sensor Network Data Logger with Multi-core Microcontroller
(Multidisciplinary Studies on Sustainable Development, 2009-11-18)This paper presents the development of a data logger which collects interesting data via low rate wireless sensor network, not expensive, low power consumed sensor node. The system is wireless and more flexible to expand ... -
Low Rate Wireless Sensor for Flood Monitoring System
(1st Electrical Engineering Network 2008, EENET 2008, 2008-11-20)This paper presents the development of a low rate wireless sensor. Wireless sensor networks are cheap and comprised of a small fully autonomous processing, communication and sensing devices. The purpose of this study is ... -
Insulator testing set for finding the efficiency in Ozone generator design
(ISH 2007, 2007-08-27)This paper presents a testing of three insulators namely solid, fluid and gas for choosing the best electric insulators. In order to generate the ozone gas, the insulator must be selected in electrode set. Nowadays, the ... -
Finned-Tube Condenser Cleaner Machine
(2007)Now a day the mostly air condition are use the air for reducing the temperature at the condenser unit. Moreover, many dusts are adhering in area of fin coil. From this reason, the heart reduction efficiency is decreased ... -
Electronic Data Capture Improvement by SSL Protocol for Payment Systems
(Ladkrabang Engineering Journal, 2007-09)In this paper, we have analyzed the performance of combining security system (SSL Protocol) with current TCP/IP module by porting security shareware into the EDC (Electronic Data Capture) devices. Finally, in order to ... -
Development program for heat balance analysis fuel to steam efficiency boiler and data wireless transfer
(World Scientific and Engineering Academy and Society (WSEAS), 2009)This research aim to improve a combustion system of boiler within increase combustion efficiency and use all out of the energy. The large boilers were used in the industrial factories which consume a lot of energy for ... -
Design Narrow Slot Antenna for Dual Frequency
(PIERS Online, 2007)The narrow slot loop antenna and linear slot antenna fed by microstrip line are designed for dual frequency at 2.44 GHz and 5.25 GHz on the standard of IEEE 802.11b/g (2.4{2.4835 GHz), IEEE 802.11j/a (5.15{5.35 GHz), and ... -
Design CPW Fed Slot Antenna for Wideband Applications
(PIERS Online, 2007)In this paper, a CPW-fed slot antenna for wideband application was designed and simulated. In order to examine the performances of this antenna, a prototype was designed at frequency 2.4 GHz and simulated with various width ...