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.

The objectives of this research are to propose an efficient and proper model that fits the cassava and rubber yields data. A generalized estimating equation (GEE) and a linear mixed model (LMM) with spatial correlation following the conditional autoregressive model (CAR) were adopted. The dependent variables are the cassava and rubber yields collected each month in every province of Thailand. The factors considered are rainfall averaged temperatures and regions. The results from GEE and LMM show that the factors influencing on the cassava and rubber yields are rainfall averaged temperature and region. Both GEE and LMM fit the correlated data. The GEE is used to explain the influence of factors on the yields in all provinces while the LMM is used to explain the influence of factors on the yields in each province.

This research is study on influences effect of decision to use PromptPay system of Thai commercial banks. The purpose of the research is as follows. Study the confidence that effect of the choice of financial transaction services through PromptPay system. Study the marketing mix factors that effect of the decision to use financial services through PromptPay system. This research is to collect data from customer of Thai commercial banks. Thai commercial banks are as follows. Bangkok Bank Public Company Limited. Krung Thai Bank Public Company Limited. The Siam Commercial Bank Public Company Limited. Kasikorn Bank Public Company Limited. and Bank of Ayudhya Public Company Limited. The results showed that most respondents had the following: They are female. They are between 31 and 40 years old. They are single. They graduated bachelor. They are studying at the undergraduate level. They are students. They earn less than 15000 baht per month. Frequency of financial transactions is 1 time per month. They used to transfer money through mobile applications. The reason for using the mobile banking is quick and easy. and Reduce the loss of money and the cost of banking transactions are the factors that affect the choice of use PromptPay system.

This research study about rainfall pattern in Thailand due to the influenced of the tropical cyclone. The annual rainfall analysis was derived from the Thai Meteorological Department (TMD) since 1 9 7 1 -2 0 0 0. The analysis of annual rainfall used composite analysis and classification of rainfall patterns with cluster analysis. To measuring the similarity between the rainfall patterns in each year by hierarchical clustering method. In addition use to Single Linkage rules for grouping the rainfall pattern and using the distance between the units close together as possible into consideration. The summarized of rainfall pattern due to the influenced of the tropical cyclone are usually found in the eastern and northeastern regions of Thailand. It is found that a heavy rainfall. The rainfall pattern in the western regions of Thailand has the least amount of rainfall as a result of drought.

This research aims to 1. Study the Tourists’ Satisfaction toward Amenities on Burmese temple’s in Lampang and 2. Study the opinion of community toward Amenities on Burmese temple’s in Lampang. The research population is 280 people by interviews and surveys. Research conducted between January 2017 to June 2017. From the history of Lampang. There is a temple built by the Burmese or a fine art form on architecture fabrication together with the Buddha’s appearance is a Burmese and in the past even a monk is a Burmese who has traveled to Thailand. As a result Lampang is another province. The temple is built in the beautiful Burmese architecture. Let’s learn to learn many. But it is not widely known The research found that The most popular tourist destinations are Wat Pa Fang Wat Si Chum Wat Si Rongmuang Wat Mon Poo Yak Wat Mon Cham Sin Wat Tha Ma O Wat Chai Mongkol is a measure of importance. Has a long history Value for conservation. The art of faith religion history. It has not been well managed and has not the potential to provide for Cultural Tourism. However after the Tourism Authority of Thailand launch campaign of 12 cities you Can’t Say No. Lampang is one of the provinces in the project. The researcher is expected that Lampang and the Tourism Authority of Thailand are cooperating to discuss and generate models of cultural activities for the development of touring sites in Lampang.