The effect of safety measure in construction: a case study column reinforcement (original) (raw)
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Burapha Science Journal, 2017
The campaign of power plant from a renewable energy is a well - thought - out process employed by Thai government to substitute or diminish the dependence on the fossil energy . Many biomass projects have yet come across management problems. A study of critical indicators for establishment of community - based biomass power plant ( CBP ) is a promising way for approaching practical consideration of biomass power plant projects . This research employed a multi - stage sampling technique which separated the data by locations and business operations . The total of 1,151 questionnaires is collected from the local communities around the seven target areas. The indicators were measured by confirmatory factor analysis for evolving the causal model of CBP establishment. Research findings were as follow: 1) the indicators of community expressed that are information, management participation, the importance of community, biomass communication network, worthiness, and sincerely support; 2) the indicators of technology expressed that are the optimized technology, innovation, and technology transfer; 3)the indicators of biomass residue expressed that are the available biomass residue, long term contract, the financial subsidization, low cost cultivation, the additional income, and the location of CBP; and 4) the indicators of government support stated that are research and development, the participation of government, policy for establishment, and interest condition. The results fitted with the empirical data at 0.05 statistically significant level.
The Journal of King Mongkut's University of Technology North Bangkok, 2018
This research studied the effect of fly ash on chloride diffusion coefficient and compressive strength of both recycled and natural aggregate concretes exposed to marine environment for 5 years. Mae-Moh fly ash was used to replace Portland cement at the percentages of 0, 15, 25, 35, and 50 by the weight of binder with various water to binder (W/B) ratios of 0.40 and 0.45 in recycled aggregate mixtures and a W/B ratio of 0.45 in natural aggregate mixtures. Concrete cube specimens of 200×200×200 mm 3 were cast and cured in fresh water for 28 days and then were placed in a tidal zone of marine environment. The compressive strengths of the concrete exposed to marine environment for 5 years as well as the total chloride diffusion coefficients of the specimens were determined. The Results revealed that the compressive strengths of recycled aggregate concretes decreased after being exposed in marine environment for 5 years, whereas those of natural aggregate concretes and fly ash increased after 28 days of curing. Evidently, higher in fly ash contents would lower chloride diffusion coefficients of both recycled and natural aggregate concretes. Furthermore, use of fly ash as low as 15% replacement by weight in recycled aggregated concretes could provide lower chloride diffusion coefficient compared to Portland cement containing natural aggregate concrete with W/B of 0.45.
วารสารวิทยาศาสตร์และเทคโนโลยี มหาวิทยาลัยมหาสารคาม, 2015
This action research examined the process of quality improvement and development of butcher shops to achieve the food sanitation standard. The research was conducted in stakeholders, in Kerng Sub-district, Muang, Mahasarakham. The data were mixed both quantitative and qualitative method which was divided into four phases and fourteen steps. Results were found that the entrepreneurs' knowledge and practices on food sanitation skill was at a good level, the attitude was at moderate level. However, in regard to the sanitation laboratory test, all panels did not meet the standard; contamination with Coliform Bacteria was found on food, food containers and on the hands of food handlers. A new development plan was approached by the relevant local authorities and monitoring agencies within the local community in order to improve the hygiene behavior of food handlers and their shops through the local people. A Healthy Public Policy technique was the main focus of stakeholders and a legal authority was engaged to monitor the skill improvement process. It was found that should be created a continuous and sustainable of the process.
2020
This research aimed to study the loss in energy from waste process, analyze causes, and provide a guideline to reduce the loss by analyzing defects and effects. This study was based on 20 key informants from the waste electrical power plant in Khon Kaen, as a case study. The data were analyzed with Process Flow Chart, Pareto chart, Risk Assessment, Cause and Effect matrix, Defect and Impact Analysis (FMEA), and Relationship Diagrams. The results showed the loss in the energy from waste process came from the stoppage of waste incineration. The study found that the reverse and forward stepping grate machine was a cause of the loss. As a result of the analysis, the loss reduction by analyzing the defects and the impact, it suggested increasing frequency of monitoring the distance (GAP) of the Grate Bar, installation thermometer under the continuous combustion chamber, and checking cleaning fan system every two hours . These guidelines could reduce loss in the energy from waste proce...
An engineering feasibility study of lam chi long small hydropower project
Engineering and Applied Science Research, 2012
This article presents an engineering feasibility study of Lam Chi Long small run-of-river hydropower project. The study was started by data collection, creating a longitudinal profile of the river, and locating a proper site of intake and 3 alternative sites of power plant. The meeting of the villagers, the local administration officials, and stakeholders was then organized in the project area. The meeting aimed to allow them to consider the project possibility and their cooperation. The natural stream discharge at the intake site, the design and the effective discharge were then calculated. There were 3 alternative values of the design discharge i.e. equal to the minimum flow, and to 50% and
Effect of Gas Nitrocarburizing Process on Hardening of High Speed Tool Steel Grade SKH51
The Journal of King Mongkut's University of Technology North Bangkok, 2021
In this study, effect of gas nitrocarburizing process on hardened and tempered high speed tool steel (SKH51) under the hardening and tempering process by difference heat treatment processes (tempering 2 cycles and 3 cycles before nitrocarburizing process) were studied. The results showed that nitrocarburizing process can increase a higher surface hardness approximately 4.4 times compared to non-heat treatment or approximately 1.4 times compared to hardened and tempered specimen. In addition, the nitrocarburizing process can be used instead of a tempering process. Moreover, heat treatment process and the production cost can be reduced by nitrocarburizing process.
ศรีนครินทร์เวชสาร, 2013
Background and Objective: Fuel derived from petroleum refining process. Gasoline (consist of n-hexane, benzene, toluene, octane, heptane) and diesel fuel (consist of benzene, toluene, ortho-xylene, paraxylene) are commonly used. The acute and chronic toxicity of both, some chemicals are classified as the carcinogens.Workers of petrol stations potentially expose to chemical in fuel evaporation during fueling and automobile emission. This pilot study aimed to investigate the health effects, the protection behavior and the potential health risk of fuel exposure among workers of petrol stations. Method: Data were collected by interviewing using an applied survey form of health risk assessment on work hazards exposure. The potential risk level was determined following the objective and subjective adjustments among workers of petrol stations in Khon Kaen municipality area. The risk levels were classified into five levels of very high, high, rather high, medium and low. Results: The resulted showed that most workers of petrol stations were males (77.42%), age 15-24 years
2013
The purpose of this study was to analyze the concept of empowerment in teachers’ work according to the perception of teachers, by using Q-methodology. Twenty-six participants were teachers under jurisdiction the office of vocational education commission, who sorted 46 selected Q-statements on a nine-point scale. The results identified eight types of perspectives of empowerment in teachers’ work which consisted of empowering oneself and other people, understanding of the work environment, careful work, determination to work, working alone and working with other people, work empowering according to each person’s difference, direct and indirect effects on work and working under the management. Also, the findings may provide the basis for the development to empower in working of teachers in order to enhance the educational quality in the future.