This research study analyzes the problem of waste water from the burning of palm trees which are used as fuel for power generation of palm ash. It is used to ferment biogas as a fuel for power generation where a large amount of wastewater from the gas digester is completed. The wastewater is then pumped out of the gas digester. Biological in large quantities Therefore to study the analysis of wastewater to find a method for designing a wastewater treatment system from high voltage systems from the corona discharge principle when adding ozone it is necessary to analyze the chemical effects of the wastewater according to the standard values of the Department of Industrial Works.

The study entitled “An Analysis of Local Wisdom on Herbs from Anti Sara Wak Scripture” is a mixed-method research. The research objectives were to evaluate the value of Anti Sara Wak scripture and to analyze beliefs in Thai society which occurred in this scripture. The samples of the study obtained from a convenient sampling were five experts of Nang Leong community. The research instrument used for data collection was questionnaire consisting of 4 parts: part 1 respondents’ general information part 2 and 3 relevant to the experience in using herbal medicine and the faith in Admiral Prince Abhakara Kiartivongse Prince of Chumphon or the author of Anti Sara Wak scripture and part 4 the open-ended section asking suggestions to further investigate Anti Sara Wak and beliefs in Thai society which appeared in this scripture. In addition the depth interview was also used to collect the data from 5 experts of Nang Leong community. The data were then analyzed to find out the value of Anti Sara Wak and beliefs in Thai society from the scripture. The majority of the respondents were elderly people. The oldest respondent was 79 years old. These respondents rated the questionnaire: 5 for strongly agree 4 for agree 3 for neutral 2 for disagree and 1 for strongly disagree reporting their attitudes towards the use of Thai herbal medicine. The results of the study show that the respondents strongly agreed with the use of Thai herbal medicine in daily life (80%) because it was suitable responding to the objective. They also added that Anti Sara Wak scripture should be publicized (90%). However there was little information available on Thai herbal medicine (30%). Additionally the results showed a strong faith in Admiral Prince Abhakara Kiartivongse Prince of Chumphon (90%). The results of analyses show that there were beliefs in Thai society that appeared in Anti Sara Wak scripture especially folklore beliefs such as superstitious beliefs holy things as well as tips and forbidden rules. Therefore Anti Sara Wak scripture provided empirical evidence in Thai history showing its value as one of Thai traditional medicine recipes.

The objective of the research is to identify the problems and needs in developing the English communication skills in the workplace of front office hotel staff in Nakhon Ratchasima province. The sample of the study are 420 front office hotel staff in management and operational level selected by using the area random sampling. The data collection approach employed in this study was mix method both questionnaire and interview. The collected data were then analyzed and compared by using frequency percentage mean and standard deviation. The findings were as follows: 1. Four English language skills (listening speaking reading and writing) are essential for all staff and listening is considered as the most important followed by speaking. 2. The main problems of using English in the workplace are writing and reading due to lack of confidence unfamiliarity with the grammatical structure and vocabulary. 3. All staff are desirable to develop English communication skills especially speaking and listening in different situation duties and responsibilities.

Ground grid design of substation is very important. It will help prevent the danger caused by the fault which causes the high step voltage and high touch voltage and may cause the operator to die. It also helps prevent damage to equipment and increases reliability for power systems as well. Currently the Gas Insulated Substation (GIS) has been built a lot especially in areas with limited space because it takes less space than the Air Insulated Substation (AIS). In order to create a substation of the GIS model instead of the AIS model. In order to create the GIS instead of AIS including the improvement or maintenance of the substation it is necessary to build another small substation to supply electricity to replace electricity from the original substation. However there are two substation stations in the same area may cause an increase of high-slope ground potential between the ground grid systems of both substations. It will cause high step voltage and high touch voltage while the fault is diminished. Therefore before improvement or maintenance of substation the ground grid distance and the size of the newly constructed substation must be analyzed that what effect on step voltage and touch voltage generation. Including studying the effects of step voltage and touch voltage that will occur.

The analysis of the relationship among dividends leverage ratios and profitability ratios of listed companies in the Stock Exchange of Thailand: non-life and life insurance sectors aims to study and analyze the financial presentation via financial statement of non-life and life insurance companies. To do so the researcher in particular focused on the information of dividend pay – out ratios leverage ratios and profitability ratios on sixteen (16) firms during the years 2013 – 2017 by employing correlation analysis. The results of the study found that the financial ratios with the same directions to dividend pay – out ratio but there were statistical insignificant included operating profitability ratio net profitability ratio return on assets ratio as well as return on equity ratio. On the other hand the financial ratio with contrary direction to dividend pay – out ratio but there was no statistical significant consisted of debt to equity ratio. However debt to total asset ratio was the one which was not only in the opposite direction to dividend pay – out ratio but also was statistical significant.