จำนวน Repository ( 207 )

การศึกษาและวิเคราะห์อิทธิพลของธาตุเจือโลหะเงิน ทอง ทองแดง สังกะสี และดีบุก ที่มีผลต่อสมบัติ                       ทางกล และโครงสร้างจุลภาค (ความแตกต่างของระดับสี) และพฤติกรรมความต้านกันหมองของทองขาวเจือต่ำ 8k
การศึกษาและวิเคราะห์อิทธิพลของธาตุเจือโลหะเงิน ทอง ทองแดง สังกะสี และดีบุก ที่มีผลต่อสมบัติ ทางกล และโครงสร้างจุลภาค (ความแตกต่างของระดับสี) และพฤติกรรมความต้านกันหมองของทองขาวเจือต่ำ 8k

This Research is a Development of 8k White Gold low Alloy Metal Components for Jewelry Pieces. By Study and Analyze the Influence of Silver Alloy Gold Alloy Bronze Alloy Zinc Alloy and Tin Alloy. Which Affect Microstructure and Mechanical Properties. (The Different of Color Scales) And Resistance Behavior of Lowered 8k White Gold Alloy in Varies Ratio. The Results Showed that Tests and Analysis to Find the Quantities of Elements has found out that Chemical Components of 8k White Gold Low Alloy Metal had a Little Different Quantities when Compared Between Before and After Centrifugal Casting Process. The Tests and Analysis Results of Mechanical Properties of Test Pieces Showed that the Hardness and Tensile Strength of 8k White Gold Low Alloy Metal with Mixture of 33.33%Au+50.67%Ag+10%Cu+5%Zn+1%Sn had Minimum Ultimate Tensile Strength Equal 0.54 kN/mm2 Minimum Elongation Percentage of 55% and Maximum Hardness of 137.0 HV. The Test Results also Show that the Mechanical Properties of the Material are Brittle Material. When Perform a Forming Process the Pieces will be Easily Broken which was Meant that the Forming Process would be Difficult. But The Color Level of the Test Pieces at this Composite Ratio had the Best Metal Color Level. The Brightness L * = 74.87 was a * = -0.89 b * = 13.74 and the Value of ΔE with the Lowest Color Difference Level of 1.35. Compared to other Varies Ratio. It Showed that 8k White Gold Low Alloy Metal Test Pieces were Very Green and Came out Slightly Yellow Compared to the Blue Line that Approached the Standard Line. These Properties were the Physical Properties Required in 8k White Gold Low Alloy Metal Jewelry Pieces Production. Also there were the Results of 8k White Gold Low Alloy Metal in Two Formulas 8k 33.33%Au+50.67%Ag +8%Cu+7%Zn+1%Sn 33.33%Au+50.67%Ag+8%Cu+8%Zn+0%Sn. These Formulas had Tensile Strength in the Range of 1.10 0.60 kN /mm2 Elongation Percentage in the Range of 70 61% and Hardness of 115.6 123.3HV Respectively. The Results of the Mechanical Properties Test of the Test Pieces Showed that 8k White Gold Low Alloy Metal 33.33% Au+50.67%Ag+8%Cu+7%Zn+1%Sn has Similar Tensile Strength but Maximum Elongation Percentage of 70% and Minimum Hardness of 115.6HV. Which was Suitable for Forming Because of good Ductility and Stretchness Properties (Ductile Material). Forming would be Easy. These were Good Mechanical Properties for Forming Precious Metals.

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การพัฒนาผลิตภัณฑ์มาการองโดยใช้ผงถั่วทองทดแทนผงอัลมอนด์บางส่วน
การพัฒนาผลิตภัณฑ์มาการองโดยใช้ผงถั่วทองทดแทนผงอัลมอนด์บางส่วน

The purpose of this study is to study a proper quantity of golden bean powder in 4 different levels: 25 50 75 and 100 of the amount of almond powder to study the amount of nutrients in a macaron which made of golden bean powder and to study the level of acceptance of using golden bean powder instead of almond powder in a macaron. The researchers investigated the appropriate amount of golden bean powder in the product by studying the ingredients used in the formulations included golden bean powder by French meringue technique. The researchers used a five-point hedonic scale product to observe sensory of product in appearance color smell taste texture and overall with a taste. The panelists were 40 students in the Department Faculty of Home Economics at Rajamangala University of Technology Phra Nakhon. The Randomized Complete Block Design (RCBD) method was used and compared average scores by Duncan New Multiple Rang Test (DMRT) method at 95% confidence interval. There were statistically significant differences in the levels of golden bean powder all sensory attributes (p< 0.05). Specifically the addition of 75% of golden bean powder had the highest level of acceptance for all sensory attributes with average scores: 4.50 4.42 4.27 4.42 4.27 and 4.42 respectively. The nutrition in macaron net weight 100 grams contain 383 kilocalories of Energy Protein 9.96 grams Carbohydrate 76 grams Sugar 62 grams and Fat 4.38 grams. Based on the comparison of the cost of the standard formula and the golden bean powder it found that the standard formula has a cost of 4.36 baht per 1 pair while the cost of gold bean powder is 2.4 baht per 1 pair. It shows that the golden bean powder will give lower energy than almond powder. Moreover golden bean powder can reduce production costs produce as much as 1 fold.

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การคัดแยกแบคทีเรียส่งเสริมการเจริญเติมโตของพืชจากดินบริเวณรอบรากต้นกระดุมทองเลื้อย (Wedelia trilobata (L.) A.S. hitchcock)
การคัดแยกแบคทีเรียส่งเสริมการเจริญเติมโตของพืชจากดินบริเวณรอบรากต้นกระดุมทองเลื้อย (Wedelia trilobata (L.) A.S. hitchcock)

The objective of this research was to isolate plant growth promoting rhizobacteria from Wedelia trilobata (L.) A.S. Hitchcock rhizosphere and preliminarily test their plant growth promoting properties such as nitrogen fixation siderophore production phosphate solubilization and indole-3-acetic acid production. Forty-seven bacterial isolates were obtained including 26 isolates of gram positive 18 isolates of gram negative and 3 isolates of actinobacteria. After that 8 isolates (including BWTM1_MSU BWTM2_MSU BWTM5_MSU BWTM6_MSU BWWM6_MSU BWWM8_MSU BWWM9_MSU and BWWM16_MSU) were selected for studying on root colonization and plant growth promoting properties under aseptic condition. The results showed that BWTM5_MSU had the evident on the promotion of plant growth with the most percentage of rice seed germination (63.33%) high level of root and shoot length with 6.11 cm and 3.89 cm respectively. As a result the root and shoot fresh weight was as high as 9.56 mg and 11.33 mg respectively. It also correlated with the highest production of indole-3-acetic acid up to 421.29 ug/ml. The root colonization was studied by counting rhizobacteria isolate BWTM5_MSU from rice rhizoplane and rhizosphere with presented bacterial number at 9.67x106 CFU/g root and 1.64x10 10 CFU/g soil respectively.

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โครงการออกแบบพื้นที่เรียนรู้ธรรมชาติป่าไม้ดอยอินทรนนท์ ในการณีศึกษาความสัมพันธ์ระหว่างพฤติกรรมการเรียนรู้และกายภาพ ดอยอินทนนท์ อ.จอมทอง จ.เชียงใหม่
โครงการออกแบบพื้นที่เรียนรู้ธรรมชาติป่าไม้ดอยอินทรนนท์ ในการณีศึกษาความสัมพันธ์ระหว่างพฤติกรรมการเรียนรู้และกายภาพ ดอยอินทนนท์ อ.จอมทอง จ.เชียงใหม่

Doi Inthanon Forest Nature Learning Area. Case study on relationship between learning and physical behavior of Doi Inthanon is a project that creates experimental architecture caused by finding a balance between learning behavior and the needs of the context to be consistent with the physical forest education on. Doi Inthanon in each area Which Doi Inthanon has a learning area that varies according to the overlapping of different nature in many forms according to the study area A. The first form is an open area in the community area. B. The second form is a semi-overlapping natural area. C. The third form is the natural overlap area. There is a form of usage based on the freedom of the user. Therefore the purpose of the project is education. To find ways and tools to design and create a space to connect users with nature Including being a learning area for those who are interested Using architecture as a link to learning relationships In order to be appropriate for the behavior of the physical user with the aim of studying this thesis topic as a case study In creating experimental architecture in each area of Doi Inthanon By using learning behavior of users in each area to study and experiment to form images To meet the needs of the area The interaction and consistency between the architecture people way of life and context

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การออกแบบและพัฒนาผลิตภัณฑ์ของตกแต่งบ้านจากเส้นพลาสติก กลุ่มเรือนไทยจักสารพลาสติก ตำบลศรีพราน อำเภอแสวงหา จังหวัดอ่างทอง
การออกแบบและพัฒนาผลิตภัณฑ์ของตกแต่งบ้านจากเส้นพลาสติก กลุ่มเรือนไทยจักสารพลาสติก ตำบลศรีพราน อำเภอแสวงหา จังหวัดอ่างทอง

This research was the basis for the design and development of home furnishings. Plastic woven from strands The woven plastic house hunters Si district seeking offense.The bulk sample from the production community in Angthong to represent the group of 50 people the researchers used a random sample quota (Quota Sampling) to obtain the desired characteristics of the sample. Then accidental sampling (Accidental Sampling) to the full amount required at the point of data collection and consumer groups. The research group defines a consumer as a representative group of 100 researchers by means of random sampling accident (Accidental Sampling) using questionnaires. The research found that The consumer and producer is of the opinion that the same approach in product form. The variance from the statistical products one is different with the two and there is a difference with the three products including the two have differences with the three significant at 0.05 number. three topics including the proper shape the suitability of woven pattern the suitability of the paint used on the products one has different products and the two products three. Significant at 0.05 Number 1 are beautiful and there is no difference between the three topics are appropriate for your size proportion appropriateness of materials used as components the adequacy of benefits. The analysis assessed consumer satisfaction with the products of home furnishings. Woven from plastic The woven plastic house hunters Si district seeking offense that overall consumer satisfaction with the product level. In the subsection are satisfied with the products good deal as well.

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