จำนวน Repository ( 1139 )

การใช้ประโยชน์จากเส้นใยผักตบชวาในผลิตภัณฑ์แผ่นใยอัดซีเมนต์ภายนอกอาคารสำหรับวิสาหกิจชุมชน
การใช้ประโยชน์จากเส้นใยผักตบชวาในผลิตภัณฑ์แผ่นใยอัดซีเมนต์ภายนอกอาคารสำหรับวิสาหกิจชุมชน

This research aims to study the water hyacinth fiber inside high density cement fiber board. By using ratio components among cement : fine sand : water hyacinth fiber : water : catalyst accelerated the formations of cement (aluminum sulfate (AI2 (SO4) 3) calcium chloride (CaCl2) sodium silicate (Na2SiO3)) on the ratio 1: 0.2: 0.075: 0.3: 0.03 by weight of total water hyacinth fiber. The 5 ratios consist of 0.0 (A1 D1 formulae) 0.025 (A2 B2 C2 D2 formulae) 0.050 0.03 (A4 B4 C4 D4 formulae) and 0.1 (A5 B5 C5 D5 formulae) by weighted all fibers were treated with sodium hydroxide solution (NaOH) at a concentration of 12%. The fiber to solution ratio was 1: 10 boiled in open system at 100 °C for 1 - 3 hours. By compressing the mixture cast machine at normal temperature (30 - 35 °C). Use a density of 0.75 g / cm3. From the test results the ratio B4 is the appropriate ratio. Can pass TIS 878- 2537 Cement Board: high density and physical properties mechanical properties and thermal insulation are good. Accelerate the formation of the most suitable cement is calcium chloride (CaCl2)

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การพัฒนาคุณสมบัติด้านฉนวนป้องกันความร้อนของกระเบื้องหลังคาคอนกรีตโดยใช้น้ายางพารา
การพัฒนาคุณสมบัติด้านฉนวนป้องกันความร้อนของกระเบื้องหลังคาคอนกรีตโดยใช้น้ายางพารา

The purpose of this research is to improve the physical and mechanicalqualities of natural rubber latex tiles. Water: surfactant: surfactant: 1: 2.75: 0.03: 0.30:0.03: 0.04 by weight and added with natural latex. In the ratio of Portland Cement Type 1: Natural Latex is 1: 0 1: 0.025 1: 0.05 1: 0.075 and 1: 0.10. Formed with compression presses at normal temperatures it was found that the optimum amount of natural latex For concrete reinforced concrete tiles the ratio is 1: 0.025. The tests in accordance with Thai Industrial Standard TIS 535-2556 are tested in 4 aspects. Dimensional stress test Water absorption test And waterproofness testing The value has passed the benchmark. And low thermal conductivity. Increasing the insulation of the roof as well. Can be used as a prototype product tile concrete roof natural latex. To produce commercially And there can be many local latex or rubber latex. To be more useful and valuable.

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การศึกษาสภาวะที่เหมาะสมสำหรับการหล่อขึ้นรูปตัวเรือนเครื่องประดับโลหะทองขาว 6k
การศึกษาสภาวะที่เหมาะสมสำหรับการหล่อขึ้นรูปตัวเรือนเครื่องประดับโลหะทองขาว 6k

This Research is to Study the Development of 6k White Gold Alloys for Jewelry Production.The Optimum Conditions for Casting Jewelry and Jewelry were Investigated. The Results of the Experiments Show that the Chemical Composition of the 6k White Gold Alloys is Slightly Different when Compared with XRF (X-ray Fluorescence Spectrometers) Pre-and Post-Melting Quantities The Heat of the Test Specimen was found to be 5%Au+42%Ag+12%Cu+3%Zn+18%Pd 25%Au+46%Ag+8%Cu+3%Zn+ 18%Pd 25%Au+50%Ag+4% Cu+3% Zn+18% Pd and 25%Au+54%Ag+0%Cu+3%Zn+ 18%Pd It is Found that the Heat from the Beginning to the Level of Change before the Liquid is used the Average Temperature of 702.3 - 636.7 Degrees Celsius Respectively 25%Au+54%Ag+0%Cu+3%Zn+18%Pd It is the Formula that Gives the Lowest Value of Liquid State Change from 636.7 Degrees Celsius to the Best Value of this Experiment. Suitable for use in the Manufacture of Jewelry due to its Melting Ability for Molding. Melting for Molding and Formed by Hand. The Amount of Zinc(Zn) may be an Important Factor in the Variation which is Directly Proportional to the Maximum Increase in the Final order of 3.58 Percent.

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ปัจจัยที่มีผลต่อการใช้อินเทอร์เน็ตของประชาชนทั่วไป ในตำบลลิ่นถิ่น อาเภอทองผาภูมิ จังหวัดกาญจนบุรี
ปัจจัยที่มีผลต่อการใช้อินเทอร์เน็ตของประชาชนทั่วไป ในตำบลลิ่นถิ่น อาเภอทองผาภูมิ จังหวัดกาญจนบุรี

The purpose of this research was to investigate the factors affecting internet usage of the general public in Linthin Thong Pha Phum District Kanchanaburi province. Analyzes of opinions on factors affecting internet usage. When classified according to the social characteristics and norms of Internet users. Personal factors Motivation and ability of the person to exchange knowledge. Confidence factors system security privacy and the benefits of using. It was found that the opinions on satisfaction were at the high level. And when the value of the entertainment. The opinions on satisfaction were at the highest level.

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การพัฒนาเสื้อผ้าสตรีจากผ้าจกคูบัว ตำบลคูบัว อำเภอเมือง จังหวัดราชบุรี
การพัฒนาเสื้อผ้าสตรีจากผ้าจกคูบัว ตำบลคูบัว อำเภอเมือง จังหวัดราชบุรี

The objective of this project work was to study and develop of womens clothing from Khu Bua Jok fabric at Ratchaburi province. The research instrument was a set of questionnaires comprising checklist for the clothing prototype for 5 patterns. The statistics used to analyze the data were frequency percentage and standard deviation. Answered by 25-35 years old ladies whom were student and income 15000 baht per month and undergraduate. Their opinion were high level to this products were be develop in sewing technique knowledge as scored as 4.09 in decorate material as scored as 3.63 and in suitable pattern as scored as 3.61. There were commented such as these Blouse designs scored sewing technique knowledge know how support other people to use this fabric apply ladies blouses by use this fabric this fabric were suited to make ready-wear developed more pattern and they were known the Khu Bua Jok fabric as medium scores as 3.36 3.10 3.06 3.01 2.83 2.64 and 2.34 respectively. This products were to comment for each factors; The pattern no.4 was the most suitable the most suitable material was pattern no.2 the best sewing technique was pattern no.2 and no.4 the best decorating was pattern no.4. The evaluated comment scored for pattern no.4 no.2 no.1 and no.5 were high as scored as 3.74 3.68 3.63 and 3.62 respectively but the pattern no.3 was scored medium as scored as 3.58 out of 5.

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