Chromium (III) is an inorganic salt being used as corrosion inhibitor plating agents surface treating agents furniture furnishings and textile printing and etc. The discharge of industrial waste water containing chromium (III) into the water source was toxic to the aquatic lives and some parts accumulate in the soil chromium (III) reduces the growth of plants reduced photosynthesis inhibit the enzyme activity imbalanced in plants and reduced productivity and etc. For this reason method to remove it before discharge the effluent into the water source is necessary. The use of apatite materials for adsorption and immobilization of various pollutants was a technique that was more likely to be used.Due to its high adsorbency easy to use and environmentally friendly. The purpose of this research was to study the preparation of calcium hydroxyapatite structural characterization of calcium hydroxyapatite by X-ray diffraction technique adsorption study of chromium solution with calcium hydroxyapatite in various conditions and the determination of adsorption isotherm. The results showed that the optimum contact time of calcium hydroxyapatite and chromium solution was 3 hours. Most adsorption works well at a pH of around 6.76. Considering the amount of chromium (III) adsorbed at equilibrium (q) it was found that the calcium hydroxyapatite with 10 % zinc added that has been calcined to 400 OC and the calcium hydroxyapatite with 15 % zinc added that has been calcined to 800 OC were to adsorb chromium (III) more than other sorbents. The adsorption isotherm was suited with Fruendlich and Langmuir. The calcium hydroxyapatite with 10 % and 15 % zinc added that has been calcined to 400 OC had the highest adsorption capacity (qm) up to 178.57 and 181.82 mg/g respectively. In addition it was found that calcium hydroxyapatite which heated to 800 degrees Celsius can decompose tricalciumphosphate.

The objectives of this research are: (1) to study the demographic factors that influence decision making in buying home appliances through the Shopee application of generation X (2) to study how the marketing mix such as product price place promotion influences the buying decision of home appliances through Shopee application of generation X. The 400 samples were drawn from 10 districts in Ratchaburi province using the convenient sampling method statistics analysis done under 95 percent confidence interval with significant level 0.05. The results show that: (1) demographic factors like gender age and income affected consumer buying. Education and occupation did not affect the consumers’ buying decisions. (2) Product price place promotion affected the buying decisions of home appliances through the Shopee application of generation X in Ratchaburi province. The Regression Analysis using R2 was applied to determine the relationship between marketing mix and problem recognition information findings alternative assessment consumer decision making and reaction after buying. The R2 are 0.62 0.53 0.59 0.58 and 0.62 respectively. The consumer problem recognition and response after buying are higher in the relationship of R2. In conclusion the consumer buying decisions of home appliances through the Shopee application are related to the marketing mix problem recognition and the reaction after buying.

This study aimed to investigate the relationship between corporate governance and financial ratio with the performance of companies listed on the stock exchange of Thailand with an excellent score. The data were collected from annual registration statement (Form 56-1) of 191 companies from 2016 to 2020. Descriptive statistics such as mean percentage standard deviation and Inferential statistics such as Pearson’s Correlation Coefficient and Multiple Regression Analysis were used to examine the relationship. The results showed that 1) Corporate Governance namely Board size the ratio of independent director and Managerial Ownership positively corelated with firm performance. 2) Leverage Ratios (Financial Ratio) namely Debt to asset ratio and Debt to equity ratio negatively corelated with firm performance but Interest coverage ratio positively corelated with performance

This research is to develop an internal inventory management system. Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon To evaluate the results of the use of information systems for managing supplies within the Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon The data was collected between October 2019 and September 2020 as a survey research using questionnaire tools. It consists of 4 parts: 1) general information of the respondents which is demographic characteristics 2) current condition and needs of the parcel management system. Faculty of Liberal Arts University of Technology Rajamangala University of Technology Phra Nakhon 3) The efficiency of the procurement management system Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon and 4) satisfaction of the procurement management system. Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon With the sample groups in this research are Support personnel Under the Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon comprised of 21 persons. The data analysis used descriptive statistics for demographic characteristics. The study found that Current conditions and procurement development guidelines Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon Overall and from the bottom to the bottom including parcel payment Parcel picking Accounting for parcel control And material storage respectively efficiency of the parcel management system Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon Overall and each side Very level When sorting the efficiency of the parcel management system in descending order namely the information security aspect of the system. Aspects to meet the needs of system users Functional aspects according to the system function And the ease of use of the respective system and the users satisfaction with the parcel management system. Faculty of Liberal Arts University of Technology Rajamangala Overall and each side Very level When sorting the users satisfaction with the parcel management system descending namely the aspects of meeting the needs of the system users. Information security in the system Ease of use And functional aspects according to the systems function respectively

Admission to higher education By students who come to study later from different institutions Different residence But have to live in the same university Which must meet An environment with a difference Social trends or values of the current society that have Quick change Friends that have a wide variety of family and social basics are also popular. The lifestyle which students who come to study in the Faculty of Engineering must have patience there is discipline and responsibility; there is morality ethics and sacrifice. Therefore it will succeed as a good and qualified engineer. Creative recruitment process it is considered that it is important to the lifestyle of a new group of students to have the opportunity to build a good relationship with their studies in engineering. Able to develop good relationship in future career in engineer A creative approach to recruiting to build relationships towards engineering studies. By organizing seminars to guide creative recruiting from people related to students Which consists of administrators teachers And staff of the Faculty of Engineering the objective of the official recruitment is creatively to find ways to create creative recruiting in the Faculty of Engineering and to create positive values for the Faculty of Engineering students. So that students are conscious of building a good relationship to study engineering.