31 articles in this issue
Kolela Joseph Nyembwe, Mamookho Elizabeth Makhatha, Kulani Mageza
The metal casting industry discharges huge volumes of waste foundry sand yearly. It was estimated to be 250 thousand tons of spent silica foundry sand for the existing 200 casting facilities in South Africa. Even though, establish documents exist in regar... see more
Parinya Khongprom, Unchalee Suwanmanee
Under the 2012 - 2050, the International Energy Agency (IEA) and the World Business Council for Sustainable Development (WBCSD) have developed a roadmap for the reduction of energy and carbon intensities in cement production. The aim of this research is t... see more
Takdir Syarif, Hary Sulistyo, Wahyudi Budi Sediawan, Budhijanto Budhijanto
One of the method to utilize coal as a source of fuel is to convert the coal into a synthetic gas through the process of gasification. The composition of the gas formed greatly depends on the gasification agent and the process conditions. Currently, some ... see more
Bunjerd Jongsomjit, Jakrapan Janlamool
In the present work, the effects of Ti addition on the characteristics and catalytic properties of the different silica-based supported nickel (Ni) catalysts were investigated. The different supports, such as the spherical silica particle (SSP), MCM41, Ti... see more
Yin Mon Naing, Vilas Nitivattananon, Oleg V. Shipin
Retrofitting becomes the priority action for existing buildings under uncertain economic times and increasing environmental awareness. Before retrofitting, it is necessary to evaluate the feasibility of the buildings to minimize the risks. The challenge i... see more
Nazila Kardan, Habib Hakimzadeh, Yousef Hassanzadeh
Scouring around cylinders is greatly affected by the value of bed shear stress entered on sediment materials of the bed. Regarding the importance of the bed shear stress fluctuations and their influence on the initiation and development of scouring around... see more
Jirattinart Thungngern, Thavivongse Sriburi, Saowanee Wijitkosum
This paper focuses on the applying the Analytic Hierarchy Process (AHP) to Integrated Water Resource Management (IWRM) to develop a model for water resource management in the Pranburi watershed by using stakeholder participation. The hierarchy model struc... see more
Hanifrahmawan Sudibyo, Jasman Jasman, Himawan Tri Bayu Murti Petrus, Agus Prasetya, Donny Widianto, Chusnul Hidayat, Satoshi Harashima, Irfan Dwidya Prijambada
In this study, kinetics of bioethanol production by fermentation of three different substrates, which were artificial substrate and the juice of two sweet sorghum varieties (FS501 and KCS105) using Saccharomyces steineri, were examined using two proposed ... see more
Sittiporn Channumsin, Prakasit Udomthanatheera, Chotika Kositratpatcharasuk, Manop Aorpimai
Since Thailand successfully launched the first earth observation satellite (Thaichote) in 2008, the Geo-Informatics and Space Technology Development Agency (GISTDA) has started developing an orbit analysis tool called “EMERALD” to be used for the current ... see more
Sureewan Jangjit, Mahasak Ketcham
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Sabah K. Hussein, Abdulmuhssan N. Mhessan, Mustafa A. Alwan
The hot press method is used to join a poly-ethylene plate of thickness 4 mm with an aluminium alloy AA6061-T6 plate of thickness 1.5 mm. A preanodizing process is crucial for the success of such joint. The anodizing was performed under a current density ... see more
Thanyathorn Niyomthai, Bunjerd Jongsomjit, Piyasan Praserthdam
Effect of hydrogen and alkoxysilanes as external donor were investigated using two commercial Ziegler-Natta catalysts (TiCl4/MgCl2•nEtOH and TiCl4/phthalate type/MgCl2) in ethylene polymerization. These catalysts were analyzed by EDX, FTIR and XRD measure... see more
Theera Leeudomwong, Tayard Deesudchit, Chedsada Chinrungrueng
This paper proposes an alternative method for pulse oximetry processing based on time-frequency analysis. Instead of using the fast Fourier transform (FFT), the continuous wavelet transform (CWT) together with the median calculation was proposed for... see more
Charinee Limsawasd, Nathee Athigakunagorn
This paper presents a comprehensive model with an application of discrete-event simulation (DES) that facilitates an estimation of CO2 emissions resulting from equipment operation in flexible pavement construction. While there are a number of past studies... see more
Veerasak Likhitruangsilp, Sy Tien Do, Masamitsu Onishi
Large transportation projects such as highways are expensive, complex, and dynamic in nature. Acquiring large investment capitals for these projects is always a major challenge for every nation. To solve this problem, Vietnamese government has called for ... see more
Totsawat Daungwilailuk, Thi Nguyen Cao, Withit Pansuk, Phoonsak Pheinsusom
After a severe fire, concrete structures are generally capable of being repaired rather than demolished. To determine whether the fire-damaged structure can be repaired, an assessment of structural integrity must be conducted. In this research, a laborato... see more
Pipop Thienprapasith, Athasit Surarerks
A number system that is well-designed can affect the computational time and the hardware implementation. An interesting number system called Round-to-Nearest coding (RN-coding) was proposed to reduce a time consuming in a rounding process. Rounding to the... see more
Antonio Mageroski, Abeer Alsadon, Chandana Withana, Linh Pham
Over the last three decades, there has been a dramatic rise in ageing populations in most countries. Older people are remaining in nursing home care due to the fact that general services and medical support are provided. However, these environments often ... see more
Anan Sutapun, Viboon Sangveraphunsiri
We developed a robot, CUREs (Chulalongkorn University Rehabilitation Robotic Exoskeleton system), for upper extremity rehabilitation. The active assistive control strategy based on the impedance force control is developed and implemented to obtain assisti... see more
Ponnada Markandeya Raju, Ravindra Vipparthy
The economy of a prestressed steel beam can be realized only when relevant parameters of optimum magnitude are chosen. The present work aims at finding out the optimum dimensions of a simply supported, laterally unsupported, prestressed steel I-beam for a... see more
Paisan Kittisupakorn, Preeya Somsong, Mohd Azlan Hussain, Wachira Daosud
A main difficult task in batch crystallization is to control the size distribution of crystal products. Complexity and highly nonlinear dynamic behavior directly affect to model-based control strategies which heavily depend on the rigorous knowledge of cr... see more
Chung Nguyen Van, Jaroon Rungamornrat, Phoonsak Pheinsusom
This paper presents an efficient and accurate numerical technique, based on a scaled boundary finite element method (SBFEM) that is capable of solving two-dimensional, second-order, linear, multi-field boundary value problems. Basic governing equations ar... see more
Naragain Phumchusri, Phuntira Kitpipit
The case-study company faces the limited space situation. Thus, the company decides to uninstall their temporary warehouses and re-locate products in two permanent warehouses. The objective of this research is to design the layouts of the two permanent wa... see more
Sompong Nakornburi, Taratip Suwannasart
Pairwise testing is a widely used technique for software testing with the reduced size of the test suite and able to detect interactions that trigger the system’s faults. In addition, pairwise testing test suites must be able to take constraints between i... see more
Sami Azam, Mirjam Jonkman, Friso De Boer
Normal binaural hearing allows the auditory system to determine the direction and distance of sound sources and to detect certain sounds at much lower intensity levels. Different stimuli may have different impact on binaural processing and may generate di... see more
Amornrat Kaewpradap, Annop Noppharatana, Sumrerng Jugjai
To compare the effects of biogas compositions, cellular premixed flames of synthetic biogas on flat burner was investigated. As the variation of main composition of biogas such as methane (CH4) and carbon dioxide (CO2), the biogas produced from agricultur... see more
Kullapat Theerarangsarit, Chanat Ratanasumawong
Gear tooth strength is mainly considered in gear design to ensure the ability to transmit power. With the design process, various sets of gear parameters are probably selected to meet the tooth strength. However the efficiencies of various designed gears ... see more
Sinichi Kinoshita, Atsumasa Yoshida
In order to develop a moxibustion treatment device that can heat appropriately by radiation while lowering the risk of burning by the moxa, a local radiative heating device for skin was fabricated and the unsteady response of the skin surface and internal... see more
Manop Masomtob, Rawitat Sukondhasingha, Jan Becker, Dirk Uwe Sauer
This work was designed to study the effects of influencing parameters in series/parallel gap spot welding process and determine the optimized parameters setting for spot welding between 18650 Li-ion battery cells and sheet metal connectors. The welding pa... see more
Arom Boekfah
Precision positioning plays a significant role in nonminimum-phase systems, especially toward biomedical applications. Precision output-tracking for a pre-specified output-trajectory can be obtained by iteratively modifying the control input based on prev... see more
Narin Koolnapadol, Panuwat Hoonpong, Sompol Skullong, Pongsak Kammul, Pongjet Promvonge
Thermal and friction loss characteristics in a square-duct heat exchanger fitted with inclined-baffles are experimentally examined. Air as the test fluid enters the test duct having a uniform surface heat-flux. The baffles are placed repeatedly on both si... see more