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Namboonruang W.,Muban Chombueng Rajabhat University
Advanced Materials Research | Year: 2014

In this paper the scope of the study is grounded on the conceptual ideas of Cradle to Grave and discussion on the full process of the local pozzolanics soil blocks or Muban Chombueng Product, MCP. First, the raw materials extraction and acquisition process, followed by using an end product and the process of natural degradation. The goal of this carbon footprint, CF study is to be compare the best products between MCP and commercial cement block, CB with the least effect on the environment and to guide the development of masonry unit towards a net reduction of resource requirement and emissions. © (2014) Trans Tech Publications, Switzerland. Source


Sitthikhankaew R.,King Mongkuts University of Technology Thonburi | Sitthikhankaew R.,Muban Chombueng Rajabhat University | Chadwick D.,Imperial College London | Assabumrungrat S.,Chulalongkorn University | And 2 more authors.
Fuel Processing Technology | Year: 2014

In the present work, low grade activated carbon was upgraded by steam activation to improve its surface properties and further impregnated with potassium hydroxide (KOH) to promote the H2S chemisorption for desulfurization applications. The H2S adsorption performance of these prepared samples was tested at ambient temperature under various operating conditions i.e. in the presence of isolated and integrated relative humidity (70%), O2 (2%), and CO2 (40%). It was found that the KOH impregnated activated carbons provide significantly higher H2S adsorption capacity and breakthrough time than the non-impregnated sample. Importantly, the presence of O2 in the gas stream greatly increases the breakthrough time of H2S adsorption, while the presence of humidity significantly increases the H2S adsorption capacity; these positive effects are related to the promotion of H2S oxidation to elemental sulfur and H2S dissociation. In contrast, the presence of CO2 strongly inhibited H2S adsorption due to competitive adsorption and reaction between CO2 and H2S, particularly for the KOH impregnated samples. Nevertheless, it was revealed from the study that the presence of O2 and humidity along with CO2 can efficiently minimize this negative effect; therefore, this highlights the importance of O2 and humidity addition for biogas purification. © 2014 Elsevier B.V. All rights reserved. Source


Kongkakul M.,Muban Chombueng Rajabhat University | Jeerungsuwan N.,King Mongkuts University of Technology Bangkok
International Journal of Technologies in Learning | Year: 2014

The objective of the research study was to design an instructional model using a digital classroom communication network through AAA model for improving the 21st century learning skills of undergraduate students. The researchers divided the methodology into two steps: 1) the design of the instructional model and 2) the evaluation of the design of the instructional model. The subjects in the research study included five experts in the fields of instructional media design, digital media, and communication, and information technology. All experts were derived from purposive sampling. The research tool was the evaluation form of the model. The instructional model consisted of three main factors, which were: 1) Analysis, 2) Activities, and 3) Assessment of Skills. The learner, device, needs, content, and context were analyzed. Activities consisted of virtual presentations, social media, jigsaw puzzles, cooperative learning, and games. Assessments were made through tests, oral, practice, training, and authentic assessment. The results of model evaluation in terms of suitability by the experts showed that the model was very suitable. © Common Ground, MettaKongkakul, NamonJeerungsuwan, All Rights Reserved. Source


Ketcham M.,KING.INFO | Yimyam W.,Phetchaburi Rajabhat University | Chumuang N.,Muban Chombueng Rajabhat University
Advances in Intelligent Systems and Computing | Year: 2016

The segmentation is the first important step for optical character recognition (OCR) system. It separate the image text documents into line, characters and word. The accuracy of the recognition system mainly rely on the algorithm in segmentation. The challenge of segmentation is overlapping therefore this paper presents a new high performance algorithm in the segmentation on Palm leaf manuscript’s Isan Dhamma overlap characters. © Springer International Publishing Switzerland 2016. Source


Narin B.,Muban Chombueng Rajabhat University | Narin B.,King Mongkuts University of Technology Bangkok | Jeerungsuwan N.,King Mongkuts University of Technology Bangkok
International Journal of Technologies in Learning | Year: 2014

The objective of this research study was to develop a learning model using augmented reality in a digital learning playground to develop information technology and communication skills for primary education students. The sample group used in the study consisted of five experts in producing learning materials in augmented realities and information technologies, selected by purposive sampling. For the research methodology, the researcher divided the operation of research for the development into two phases. The first phase was the design of a learning model using augmented reality in a digital learning playground. The second phase was the presentation of this model to the experts in producing learning materials in augmented realities and information technologies for evaluation; a form was used to evaluate the appropriateness of the model. The research results revealed that this learning model using augmented reality in a digital learning playground consisted of 4 steps which were 1) Input, 2) Process, 3) Output, and 4) Feedback. The results on the appropriateness of the model revealed that the appropriateness of the model was of a high level. © Common Ground, Burin Narin, Namon Jeerungsuwan All Rights Reserved. Source

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