3,541 results
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Journal Article Full text
Applying decision trial and evaluation laboratory as a decision tool for effective safety management system in aviation transport
In recent years, in the aviation industry, the weak engineering controls and lapses associated with safety management systems (SMSs) are responsible for the seemingly unprecedented disasters. A previous study has confirmed the difficulties experienced by safety managers with SMSs and the need to…
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Design of programmable logic controller auto power reset circuit for FM transmitter
The mono-stereo controller using audio mute clock is used at the International Broadcasting Bureau (IBB) FM 106.6 MHz transmitter in Ulaan Baatar, Mongolia since 2010. The major problem of the FM broadcast station was from the frozen Programmable Logic Controller, PLC, which must be manually reset…
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Microstructural and mechanical properties of welded SSM356-T6 and SSM7075-T6 aluminum semi-solid sheets by friction stir welding
Friction Stir Welding (FSW) was the welding process applied in this research to join different grades of aluminum alloy sheets Semi-Solid Metal (SSM) 356-T6 and 7075-T6. The test pieces have dimensions of 50 mm × 100 mm × 4 mm. The effect of tool rotational speed on metallurgy, and mechanical…
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Adsorption of anionic, cationic and disperse dyes with activated pyrolytic tire char
Activated pyrolytic tire char was applied as adsorbents to remove dyes from contaminated water. The method of surface treatment with ethanol solution, HCl solution and then activation with NaOH solution was proposed. After activation at 750oC, the specific surface area (SSA) of activated char (AC)…
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Production of activated carbon from peanut hill using phosphoric acid and microwave activation
The optimum conditions for preparing activated carbon from peanut hulls by phosphoric acid and microwave activation were studied. Factors investigated in this study were temperature of carbonization at 300, 350, 400 and 450๐ C, and time of carbonization at 30, 60 and 90 minutes. The optimum yield…
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Effect of filling surface-treated pyrolytic char on resistivity of rubber films
In this research, natural rubber (NR) films filled with pyrolytic tire char, carbon black N234 and N330 were compared for their electrical resistivity. The filler loading was varied to be 5, 10, 15, 20 and 25% of dry rubber content. The effect of surfactant which is 2 %w/v sodium dodecyl sulfate…
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Variation reduction of brightness and pH of pulp sent to a paper mill
The variance of the brightness of pulp sent to the paper mill during the changing period of dry pulp grades affects the chemical control in the paper mill. This research aims to determine the mixing formula of pulp with different brightness from the EOP and D1 stages to handle this variation issue…
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Optimal mechanical harvester route planning for sugarcane f ield operations using particle swarm optimization
Since current agricultural production systems such as the sugarcane supply system in the sugar industry are developing towards larger and more complicated systems, there is consequently increasing use of agricultural machinery. Even though mechanization can help to increase the sugarcane yield, if…
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Evaluating the bio-energy potential of groundnut shell and sugarcane bagasse waste composite
An assessment has been carried out on bio-coal briquettes from coal with sugarcane bagasse and coal with groundnut shell. Proximate analyses and elemental compositions of the coal and biomasses were determined. Different samples of briquettes were produced by blending varying composition of the…
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Lean assessment for manufacturing of small and medium enterprises (SMEs): A case study of electronics industry in the Northeast of Thailand
This research was aimed at assessing for manufacturing a small and medium enterprise of electronic industry case study in the Northeast of Thailand. Electronic industry produces integrated circuits products (IC). We use lean assessment tools with 14 lean technique and tools. The value of lean…
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Energy storage system control strategies for power distribution systems
Energy storage systems have been widely employed to attain several benefits, such as reliability improvement, stabilization of power systems connected with renewable energy resources, economic benefits and etc. To achieve the above objectives, the appropriate and effective control strategies for…
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An evaluation of speed limit measure: A case of the Mittraphap highway passing through Khon Kaen city
The objective of this study is to evaluate the speed control measure on the arterial road of Khon Kaen city. The 60 km/hr speed limit was posted on the urban arterial since 2012. To reveal the existing conditions, this study analyzed the accident data, speed data and enforcement data. Driver’s and…
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Influence of fly ash fineness on water requirement and shrinkage of blended cement mortars
In this paper, the influence of fly ash fineness on water requirement and shrinkage of blended cement mortar was studied. The results indicate that the water requirement and shrinkage characteristic of the blended cement mortar are dependent on fly ash fineness and replacement level. The use of…
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Performance improvement of developed program by using multi-thread technique
This research presented how to use a multi-thread programming technique to improve the performance of a program written by Windows Presentation Foundation (WPF). The Computer Assisted Instruction (CAI) software, named GAME24, was selected to use as a case study. This study composed of two main…
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A speed estimation of sensorless control for asymmetrical parameter type two-phase induction motor drives
This paper presents the concept of a speed estimation of sensorless control for asymmetrical parameter type two-phase induction motor drive, by using the adaptive observer system. The motor speed is estimated on the rotor-flux reference frame to simplicity for application. The design guideline of…
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Finite element based model of parchment coffee drying
Heat and mass transfer in the parchment coffee during convective drying represents a complicated phenomena since it is important to consider not only the transport phenomena during drying but also the various changes of the drying materials. In order to describe drying of biomaterials adequately, a…
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Upgrading of bio-oil derived from tobacco using ferrierite, ZSM-5 and Co-Mo/Al2 O3 catalysts
This research aims to investigate bio-oil yield of tobacco leave by pyrolysis at 450-550o C. The bio-oil was upgraded by ferrierite, ZSM-5, Al2 O3 , Co-Mo/Al2 O3 and Mo2 C catalysts. Pyrolysis was carried out in a semi-batch reactor with a space velocity of 1.7 h-1 under nitrogen atmosphere. The…
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Water quality parameters reduction of the Lamtakong river basin (Thailand) using statistical analyses
Data reduction is very important when dealing with river pollution analysis. Lamtakong River is a small river but it is one of the most significant water resources in Thailand for several community water supply systems, large farming and irrigation areas, and waste water drainage systems. This…
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Model predictive control in light naphtha distillation column of gasoline hydrogenation process
The main scope of this research is for designing and implementing of model predictive control (MPC) on the light naphtha distillation column of gasoline hydrogenation process. This model is designed by using robust multivariable predictive control technology (RMPCT). The performance of MPC…
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Development of analysis method of material f low cost accounting using lean technique in food production: A case study of Universal Food Public (UFC) Co.,Ltd.
This research aims to apply Lean technique in conjunction with analysis of Material Flow Cost Accounting (MFCA) to production process of canned sweet corn in order to increase process efficiency, eliminate waste and reduce cost of the production. This research develops and presents new type of MFCA…
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