จำนวน Repository ( 3447 )

การศึกษาพัฒนาส่วนผสมโลหะทองขาว 6k สำหรับการผลิตตัวเรือนเครื่องประดับ
การศึกษาพัฒนาส่วนผสมโลหะทองขาว 6k สำหรับการผลิตตัวเรือนเครื่องประดับ

This Research is to Study the Development of 6k White Gold Alloys for Jewelry Production. The Influence of Admixtures on Mechanical Properties was Investigated (Tensile Strength and Hardness) of 6k White Gold Alloys at Various Composite Ratios. The Results of the Experiments Show that the Chemical Composition of 6k White Gold Alloys is Slightly Different when Compared with the XRF (X-ray Fluorescence Spectrometers). Compare the pre and Post-Melting Quantities. Test results of Mechanical Properties of Test Pieces. The Tensile Strength of the 6k Gold Alloy is 25% Au+46%Ag+8%Cu+3%Zn+18%Pd The Highest Value was 1.14 kN / mm2 the Lowest Percentage was 64% and the Hardness was 259.87HV. The Result of this Test is that the Mechanical Properties of the Material are Brittle Material. When the Mold is Formed the Fracture and Forming will be Difficult. 25%Au+42%Ag+12%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 Tensile Strength in the Range of 0.66-0.70 kN / mm2 Percentage of Elongation in the Range of 84-90% and Hardness of 277.60 244.60 and 186.73HV Respectively. The Mechanics will Show that the Alloys of White Gold 6k 25%Au+54%Ag+0%Cu+3% Zn+18%Pd Have Similar Tensile Strength. The Maximum Percentage of Elongation is 90% and the Minimum Hardness is 186.73HV. It is Suitable for Forming because it has Ductile Material. This is a Good Mechanical Property in the Metal Forming Machine.

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การพัฒนาผลิตภัณฑ์กระเบื้องยางธรรมชาติต้นทุนต่ำที่มีสมบัติต้านทานการลามไฟ และใช้เศษขยะพลาสติกเอทธิลีนไวนิลอะซิเตทความละเอียดสูงเป็นสารเติมแต่ง
การพัฒนาผลิตภัณฑ์กระเบื้องยางธรรมชาติต้นทุนต่ำที่มีสมบัติต้านทานการลามไฟ และใช้เศษขยะพลาสติกเอทธิลีนไวนิลอะซิเตทความละเอียดสูงเป็นสารเติมแต่ง

This research aims to develop the natural-rubber floor tiles mixed with high fineness ethylene vinyl acetate plastic wastes (EVA plastics) from the factories. The study use natural-rubber STR 20 at 100 phr with various contents of EVA plastics (e.g. 0 5 10 20 40 and 80 phr) and then mixed with chemical substance at constant ratio include zinc oxide at 5 phr stearic acid at 2 phr mercaptobenzothiazole at 0.5 phr diphenyl guanidine at 0.2 phr and sulfur at 3 phr. The samples are ground by two-roll mill and formed by compression molding at 150 degree Celsius with 30x30x0.2 cm of dimension. The properties of the natural-rubber floor tiles are tested under ASTM standard. From the results it is found that the natural-rubber floor tiles mixed with 10 phr of EVA plastics is the suitable ratio for using as the rubber floor tiles in building. This ratio can increase the hardness tensile strength and wear resistant properties and decrease the density and thermal insulation properties when compare to the natural-rubber floor tiles without EVA plastic.

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การศึกษาและพัฒนาวัสดุปูผิวทางแบบแอสฟัลติกคอนกรีตผสมด้วยยางแผ่นรมควัน
การศึกษาและพัฒนาวัสดุปูผิวทางแบบแอสฟัลติกคอนกรีตผสมด้วยยางแผ่นรมควัน

This research presents the engineering properties of asphalt (AC 60/70) modified with different ratios of rib smoked sheet. Then select the best properties of the binder to mix asphaltic concrete. From laboratory testing results with adding 9% rib smoked sheet into mixtures for the best results. The properties of asphaltic concrete can be improved by adding 9% rib smoked sheet. For asphaltic concrete Marshall Stability increased with adding rib smoked sheet into asphalt. Moreover the stiffness modulus of asphaltic concrete can be improved 9.03 compared to AC 60/70.

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ปัจจัยความสำเร็จของธุรกิจขนาดกลางและขนาดย่อมในจังหวัดนครปฐม
ปัจจัยความสำเร็จของธุรกิจขนาดกลางและขนาดย่อมในจังหวัดนครปฐม

The research is to study the success factors in small and medium-sized enterprises in Nakhon Pathom. There are 2 points in objective: 1) to study characteristic of operation characteristic of entrepreneur characteristic of doing business and the success in an operation of small and medium-sized entrepreneurs. 2) to study the operation factor influencing the success of small and medium-sized enterprises. The sample size is 400 small and medium-sized entrepreneurs in Nakhon Pathom. In this research there are 3 independent variables including financial and accounting management production management and marketing mix. While dependent variable in the research is the success in doing business. Furthermore basic statistics and pearson correlation were applied in order to analyse all data. The results of this research are indicated that financial and accounting management have relation with the success at a significance level of 0.01. However when considering in each point of financial and accounting management it find out that financial planning is the factor that is more influential than accounting record at a significance level of 0.01. Meanwhile production management has relation with the success at a significance level of 0.01. Whereas it appears that the standardization is an influencing factor rather than quality and cost reduction respectively at a significance level of 0.01. In terms of marketing mix it presents that marketing mix also has relation with the success at significance level of 0.01. And when examining in each point of marketing mix product is more influential than promotion price and place at significance level of 0.01.

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การออกแบบเครื่องแต่งกายสุภาพสตรีชุดบิสสิเนส ปาร์ตี้ จากสถาปัตยกรรมชิโน-โปรตุกีส
การออกแบบเครื่องแต่งกายสุภาพสตรีชุดบิสสิเนส ปาร์ตี้ จากสถาปัตยกรรมชิโน-โปรตุกีส

The purposes of Design Project of Business Party Costume for Women inspired by Sino- Portuguese architecture are to study Sino-Portuguese architectural structures in Phuket to study costume design works in 2011-2012 and to create five Business Party costumes for women inspired by Sino-Portuguese architecture. Sino-Portuguese architecture has remarkable structures and styles combining western architecture with eastern styles. In Thailand this style is mostly found in buildings and houses in the southern region and the best preserved buildings are in Phuket. The mixture of classic renaissance and neo-classic styles was well combined with Sino-Thai Art making it significant and distinctive. Nowadays these constructions are regarded as conserved buildings. Therefore the author designed Business Party costumes for women which can be worn to work and also for special occasions resulting in saving time and money. The idea for working women costume design was influenced by Sino-Portuguese architectural features adding more various patterns and styles of costume. For analyzing the method of descriptive analysis of Sino-Portuguese architecture was used dividing criteria into four analytical aspects focusing on physical features and analyzing sample pictures of the architecture to create the costumes. In conclusion according to the study in Sino-Portuguese architecture it can be summarized that Sino-Portuguese architecture is not only the combination between western and eastern architectural styles. This combination was influenced by English Dutch (Dutch or Holland now is Netherland) Portuguese (Portugal) and French styles. However all of them were originated from Greek and Roman. Sino-Portuguese architecture in Phuket is similar to those in Penang. It can be said that Phuket and Penang at that time were sister cities and the decoration styles in Phuket were influenced and changed over time. As for the costume design the clothes were designed to be worn for many occasions for example it can be worn to work then go for special occasion without changing. The design aimed to be comfortable beautiful in patterns and ornaments and easy to wear as well as time-saving.

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