Chandrakasem Rajabhat University is a tertiary educational institution in the north of Bangkok, Thailand. It offers a post-diploma certificate and degree level education from the bachelor's degree to master's degree, with a Ph.D offered in several majors.Founded in 1940, Chandrakasem was Thailand's first training college for secondary school teachers. In 1991 Chandrakasem Teachers College was named an outstanding tertiary educational institute by the Ministry of Education. The following year, His Majesty King Bhumibol Adulyadej bestowed the name Chandrakasem Rajabhat Institute on the former college.On 14 June 2004, all Rajabhat institutes nationwide were upgraded by His Majesty the King, who signed the Rajabhat University Act of B.E 2547 , which was announced in the Royal Gazette for implementation from 15 June 2004. This raised all Rajabhat institutes to Rajabhat universities, creating a close-knit group of Thai universities dedicated to preserving the Thai heritage and subject to the National Tertiary Education Commission of the Ministry of Education. Wikipedia.
Chindaprasirt P.,Khon Kaen University |
Rattanasak U.,Burapha University |
Vongvoradit P.,Burapha University |
Jenjirapanya S.,Chandrakasem Rajabhat University
International Journal of Minerals, Metallurgy and Materials | Year: 2012
The Al-rich waste with aluminium and hydrocarbon as the major contaminant is generated at the wastewater treatment unit of a polymer processing plant. In this research, the heat treatment of this Al-rich waste and its use to adjust the silica/alumina ratio of the high calcium fly ash geopolymer were studied. To recycle the raw Al-rich waste, the waste was dried at 110°C and calcined at 400 to 1000°C. Mineralogical analyses were conducted using X-ray diffraction (XRD) to study the phase change. The increase in calcination temperature to 600, 800, and 1000°C resulted in the phase transformation. The more active alumina phase of active θ-Al 2O 3 was obtained with the increase in calcination temperature. The calcined Al-rich waste was then used as an additive to the fly ash geopolymer by mixing with high calcium fly ash, water glass, 10 M sodium hydroxide (NaOH), and sand. Test results indicated that the calcined Al-rich waste could be used as an aluminium source to adjust the silica/alumina ratio and the strength of geopolymeric materials. The fly ash geopolymer mortar with 2.5wt% of the Al-rich waste calcined at 1000°C possessed the 7-d compressive strength of 34.2 MPa. © 2012 University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.
Ratanachotinun J.,Chandrakasem Rajabhat University |
Kasayapanand N.,King Mongkuts University of Technology Thonburi
International Journal of Applied Engineering Research | Year: 2014
This research is to study of the impact on the traffic and energy from the first car policy of the Thai Government in case study Bangkok. The study collected information on the properties and requirements can join this project. An analysis of the impact on traffic conditions occurring in before and after the policy, and the impact fuel energy from vehicles from the policy. The result found that in during 2012-2013 first car policies affect to conditions of traffic and fuel consumption in the Bangkok area. Vehicles that are added to the system since 2012, the average speed on the traveling of automobiles on the roads in Bangkok have decreased in during 2011-2013, the decreased rate of average speed about 3.86 and 3.37 percent in 2012 and 2013 respectively. Impact on energy consumption, oil fuel into Bangkok from the number of cars of this policy, approximately 654, 150 liters/day accounted for about 8, 380, 642, 725 Baht/year, or 0.63 percent of the total value of domestic oil consumption in the 2013. Guidelines to improve both traffic and energy should be promoting the use of mass transit systems. This policy affects the economy and society. Therefore, it should carefully consider if the policy is carried out in this manner in the future, for the ultimate development of country. © Research India Publications.
Chomcheon P.,Chandrakasem Rajabhat University |
Wiyakrutta S.,Mahidol University |
Aree T.,Chulalongkorn University |
Sriubolmas N.,Chulalongkorn University |
And 6 more authors.
Chemistry - A European Journal | Year: 2010
Five new hybrid peptide-polyketides, curvularides A-E (1-5), were isolated from the endophytic fungus Curvularia geniculata, which was obtained from the limbs of Catunaregam tomentosa. Structure elucidation for curvularides A-E (1-5) was accomplished by analysis of spectroscopic data, as well as by single-crystal X-ray crystallography. Curvularide B (2) exhibited antifungal activity against Candida albicans, and it also showed synergistic activity with a fluconazole drug. © 2010 Wiley-VCH Verlag GmbH & Co. KGaA. Weinheim.
Laokietkul J.,Chandrakasem Rajabhat University
Journal of Next Generation Information Technology | Year: 2014
This study was to create course associative classification rules called CourseACRs to evaluate course equivalency for a credit transferring process by using the associative classification technique. The purpose of this study was to create course evaluation tools for evaluating course equivalency. This study used course transfer history records of students in three bachelor's degree programs at Chandrakasem Rajabhat Univeristy, Thailand-- Information Technology, Computer Science and Multimedia Technology-- as a training data set. The result of this study revealed that the CourseACRs performed at a good level of performance with an accuracy rate of 89.63% of the courses equivalency model for the university's credit transferring process. Finally, the research discovered that the CourseACRs can be a guideline for academic staff and students to evaluate course equivalency in the credit transferring process and to manage an appropriate study plan after the credit transferring process in the future as well.
Chindaprasirt P.,Khon Kaen University |
Jenjirapanya S.,Chandrakasem Rajabhat University |
Rattanasak U.,Burapha University
Construction and Building Materials | Year: 2014
Fluidized bed combustion (FBC) is a well-established coal burning process for small factories owing to energy efficiency and low environmental impact. Due to the low burning temperatures at 800-900 °C, FBC fly ash is not suitable for use as pozzolan in concrete mixture and requires proper improvement before utilization. This research proposed the use of FBC fly ash as a source material for geopolymeric composite. Grinding was applied to improve the physical property of FBC fly ash. In addition, the ground FBC fly ash was blended with pulverized coal combustion (PCC) high calcium fly ash to increase its glassy phase. The geopolymeric composites were then prepared using the blended powder mixed with alkali solutions, and thermally-cured to promote the reaction. The hardened specimens were subjected to chemical and physical tests. Resistance to acid and salt attacks of PCC/FBC fly ash composites was also investigated. Results showed the changes in chemical compositions and physical performances of geopolymeric materials. PCC fly ash helped enhance the properties of FBC fly ash based composite and the dense and homogeneous matrix was achieved. Additional CSH was formed resulting in the increase in strength of composites as a function of time. However, the durability was affected with the use of the high calcium PCC fly ash due to the presence of calcium and the associated hydration products. © 2014 Elsevier Ltd. All rights reserved.