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Boonsap Witchayangkoon

Boonsap Witchayangkoon

Thaïlande
 
Membre depuis 17 mois
 
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Influence of Carbon in Iron on Characteristics of Surface Modification by EDM in Liquid Nitrogen

Many surface modification technologies have been proposed and carried out practically by CVD, PVD et.al. Carbonized layer has been made using EDM method. In this paper, to make the nitride layer by EDM some new trials were carried out using a titanium electrode in liquid nitrogen. Experiments were carried out on carbon steel (S45C),... Plus

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Publiée le 11 Jan. 2012

Pages: 15

Lectures: 18

Téléchargements: 1

A Land Data Assimilation System Utilizing Low Frequency Passive Microwave Remote Sensing: A Case Study of the Tibetan...

To address the gap in bridging global and smaller modelling scales, downscaling approaches have been reported as an appropriate solution. Downscaling on its own is not wholly adequate in the quest to produce local phenomena, and in this paper we use a physical downscaling method combined with data assimilation strategies, to obtain... Plus

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Publiée le 24 Mai 2012

Pages: 22

Lectures: 1

Téléchargements: 0

Validating Measurements of Perceived Ease Comprehension and Ease of Navigation of an Online Learning Technology:...

Many universities are realizing that the implementation and use of online learning tool become a competitive advantage to address the actual learning needs. The purpose of this study is to determine the factors that influence users’ perceived ease of use of Webct an online learning tool. We administrated a questionnaire to... Plus

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Publiée le 24 Mai 2012

Pages: 15

Lectures: 0

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Fuzzy Logic Modeling Approach for Risk Area Assessment for Hazardous Materials Transportation

The assessment of area in risk of HazMat transportation is very beneficial for the planning of the management of such area. We prioritized the affected area using HazMat-Risk Area Index (HazMatRAI) developed on the basis of Fuzzy Logic. The purpose of such development is to reduce limits of the criteria used for the assessment which we... Plus

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Publiée le 3 Mai 2012

Pages: 16

Lectures: 0

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Computer Modeling of Internal Pressure Autofrettage Process of a Thick-Walled Cylinder with the Bauschinger Effect

In this paper, the internally pressure overloading autofrettage process of a thick-walled cylinder has been numerically investigated. The corresponding axi-symmetric and plane-stress finite element model has been employed. The elasto-plastic material model with nonlinear strain-hardening and kinematic hardening (the Bauschinger effect)... Plus

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Publiée le 4 Mai 2012

Pages: 19

Lectures: 3

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Types of Media for Seeds Germination and Effect of BA on Mass Propagation of Nepenthes mirabilis Druce

Nepenthes mirabilis Druce Seeds need light for their germination. The best medium for seeds germinated was half strength MS medium supplemented with 0.1 % activated charcoal. The organic substance such as coconut water, potato, and banana were not enhanced seed germinated. Shoot tip of N. mirabilis about 1 cm. long were cultured on... Plus

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Publiée le 4 Mai 2012

Pages: 9

Lectures: 1

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Numerical Analysis of Turbulent Diffusion Combustion in Porous Media

Turbulent methane-air combustion in porous burner is numerically investigated. Several computed field variables considered include temperature, stream function, and species mass fractions. The one-step reaction considered consists of 4 species. The analysis was done through a comparison with the gas-phase combustion. Porous combustion... Plus

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Publiée le 4 Mai 2012

Pages: 10

Lectures: 1

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Production of Hydrocarbons from Palm Oil over NiMo Catalyst

Catalytic hydrodeoxygenation of palm oil in dodecane over NiMo/Al2O3 has been investigated in a 300mL Parr’s reactor. Triglycerides have been converted to hydrocarbons with various molecular sizes due to the compositions of fatty acids in palm oil. In this experiment, parameters of interest are temperature, pressure and turbine... Plus

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Publiée le 4 Mai 2012

Pages: 12

Lectures: 4

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A Detailed Analysis of Capillary Viscometer

The purpose of this paper is to understand how a capillary viscometer is able to measure the viscosity of a fluid, which equals time required to empty a given volume of liquid through an orifice. A fluid analysis was done on a capillary viscometer in order to derive equations to theoretically describe the viscometer. In addition,... Plus

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Publiée le 20 Jan. 2012

Pages: 20

Lectures: 15

Téléchargements: 1

SAFARILAB: A Rugged and Reliable Optical Imaging System Characterization Set-up for Industrial Environment

This work proposes a rugged and reliable set-up to characterize incoherently illuminated optical imaging systems. It complies with the ISO 12233 standard and is suitable for industrial applications. The standard has been implemented taking advantage of the allowed degrees of freedom to optimize noise robustness. Key points of the... Plus

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Publiée le 20 Jan. 2012

Pages: 15

Lectures: 35

Téléchargements: 6

 
49 Publications
354 Lectures

International Transaction Journal of Engineering, Management, & Applied Sciences & Technologies

International Transactio...

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