จำนวน Repository ( 31 )

Greenhouse gas emission reduction from recycled solid waste management : A Case Study of Rattanatibade School, Nonthaburi Province
Greenhouse gas emission reduction from recycled solid waste management : A Case Study of Rattanatibade School, Nonthaburi Province

The study evaluated the greenhouse gas emission reduction of waste management with software of 3R-Greenhouse Gas Calculation Versions 6.0 case study of Rattanatibade School Nonthaburi Province. The results of solid waste from Rattanatibade School Nonthaburi Province are totally 1748 kilogram. Classification of waste by group the results show that other solid waste group had the highest weight. Following by organic waste LDPE plastic cardboard paper (white / black) glass PS plastic PET plastic aluminum newspaper and steel in the quantities 140 90.67 29.05 28.09 27.93 26.51 24.54 21.14 5.33 0.20 kg respectively. When evaluating greenhouse gas emission reduction of solid waste it has found that greenhouse gas emission from solid waste recycled recycling totaled 666.23 KgCO. is the most paper (white / black) is equal to the amount of greenhouse gasses 136.34 KgCO. Following by cardboard LDPE plastic and organic waste. The reduction of greenhouse gases are equal to 113.84 109.03 100.71 KgCOrespectively.

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แผ่นมุงหลังคาจากวัสดุรีไซเคิล
แผ่นมุงหลังคาจากวัสดุรีไซเคิล

The purpose of this project is to study the mechanical and physical properties of recycled roofing materials. The pulp extracted from the UHT beverage boxes to get aluminum foil mixed with low density polyethylene. This can be used engineering and is an option to reduce the amount of UHT boxes left over to roofing sheets. In experiment 3 aluminum foil medium size and fine then hot and extruded with 68 and 10 bar compression then cut into test pieces. To test mechanical and physical properties in accordance with the test standards: Torsion Testing Tensile strength Impact resistance Heat resistance water absorption and density testing. Compare the mechanical and physical properties of the material; different sizes of aluminum foil and compressive strength. To bring the best materials to the product. From the tests it was found that the properties of recycled composite materials From the box UHT beetroot This is made of coarse aluminum foil. 18.23 MPa bending strength 10.66 MPa tensile strength 110.987 J / m2 impact resistance 52.40 Shore-D Hardness 0.62 % Water Absorption 0.70 % Thickness Swelling 1.086 g/m3 Density 0.031 m2.K/W Thermal Resistance and 0.291 W/mK Thermal Conductivity is the best mechanical properties. Due to the large aluminum foil it can be used for high strength. Which is higher than the aluminum foil of a smaller size.

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การลดของเสียจากกระบวนการผลิตยางนอกรถจักรยานโดยเทคนิคซิกส์ซิกม่า
การลดของเสียจากกระบวนการผลิตยางนอกรถจักรยานโดยเทคนิคซิกส์ซิกม่า

This research aims to reduce waste in the production process to meet the target to find ways to prevent defects occurring in the curing process and to improve preventative measures available today. The waste found in the curing process label the edges are blamed blistering edge under inflated tires cover on low. After brainstorming to find factors that affect the defect by using techniques Six Sigma (Six Sigma).The work five main steps in performing a job defining the problem measuring analyzing problems improved control and severity surveillance and monitoring disorders of the process. It was found that the raw materials are the main parameters that cause much waste as possible. Therefore we have developed an approach to improve the material by adding a preliminary inspection and design documents to determine work procedures. The benefits of this research can reduce the waste that occurs in the curing process of the target by reducing the rate of 8.0 % an average of 7.3% in a survey from January to May 2557 is an average rate of 6.0% In a survey in June 2557 equivalent to saving manufacturing cost 135045 baht per month. The rate of decline is likely to be quite good that make employees feeling and effort to cooperate in the reduction of waste in the production process.

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Quality of life’s development of motorcycle taxi in bangkok
Quality of life’s development of motorcycle taxi in bangkok

The purposes of the study were to examine the quality of life of the motorcycle taxi drivers in Bangkok Metropolitan region and to investigate the development of the quality of life of the motorcycle taxi drivers in Bangkok Metropolitan region. The sample of the study drawn by the method of stratified simple random sampling consisted of 507 motorcycle taxi drivers in Bangkok Metropolitan region. The questionnaire was used as the data gathering tool. The statistics applied for data analysis consisted of Frequency Percentage Mean Standard Deviation Crosstabs T-test F-test at 0.05 level of significance. The results of the study demonstrated that the majority of the motorcycle taxi drivers were male between 36-50 years old completed secondary education were married lived in rentedhouses earned average daily income of 200-400 Baht earned average monthly income of 5000-10000 Baht spent average monthly expenses of 5001-10000 Baht earned their living as the motorcycle taxi drivers for 3-5 years had white vehicle registration plates and drove motorcycle taxis in Bangkok area. The study of opinion concerning the quality of life revealed that the motorcycle taxi drivers in Bangkok Metropolitan region expressed their opinion on overall aspects of quality of life at a high level Mean =3.72. When each aspect of the quality of life was examined it was found that safety aspect was at a highest level next below were the aspects of work life spirit and soul participation family life health and communication. According to the aspects of income and environment the study showed a moderate level of opinion respectively however the aspects of housing and education were found at a high level. With regard to the opinion on the development of quality of life the motorcycle taxi drivers had a moderate level of opinion Mean=3.21.

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The Effect of chain extender on rheological properties of recycledpoly (ethyleneterephthalate)
The Effect of chain extender on rheological properties of recycledpoly (ethyleneterephthalate)

The effect of chain extender on the improvement of molecular structure and rheological properties in shear and elongation of recycled poly (ethylene terephthalate) was studied. The results suggested that addition of chain extender increased the molecular weight and broader molecular weight distribution of recycled poly (ethylene terephthalate). A gel fraction of cross-linked material was formed and the amount of gel content was dependent on the amount of chain extender used. Moreover it was found that the addition of chain extender increased the shear and elongational viscosities of recycled poly(ethylene terephthalate). The increases of viscosities were explained that the extension of poly (ethylene terephthalate) chains caused a reduction in chain mobility. As for the tensile properties at the molten and solidified state it was seen that the increase of tensile properties resulting from chain extender rose up to 0.6 wt% before it reduced at the chain extender loading of 0.9 wt%.

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