The objectives of this research were to 1) study attitudes and consumption behavior of clean food for health 2) compare personal factors with consumption behavior 3) compare personal factors with consumption attitudes and 4) study attitudes affecting consumption behavior. The sample group was the population of Bangkok Province. Used in the study: 740 people. The questionnaire was used as a research tool. The data were analyzed by frequency percentage mean standard deviation. T-value test Analysis of one-way ANOVA and multiple regression analysis. The research results were found that: attitudes towards the consumption of clean food for health during the Covid-19 epidemic situation was at a high level. Clean food for health consumption behavior during the Covid-19 epidemic situation was at a high level.Individual factors including gender education and status had different attitudes towards healthy food consumption. During the Covid-19 epidemic situation the difference was statistically significant at the .05 level Individual factors including gender education income occupation and status had different healthy clean food consumption behaviors during the Covid-19 epidemic with statistical significance at the .05 level. Attitudes had a statistically significant effect on healthy food consumption during the Covid-19 epidemic at .05 level.

This research is a mixed-method research which is comprised of a quantitative research and a qualitative research. The Objectives of this research are all in the hotel business and are (1) to study the human resource management (2) to study the human resource management environment (3) to be a guideline for human resource management. This research project had a sample group of 100 personnel working in the hotel business in Bangkok along with interviews with 10 human resources department chiefs. The results of the research project: 1. Most of the respondents were female with a Bachelors degree single status Food & Beverage position and employment duration of working 1 - 5 years. Human resource management of hotel business in Bangkok was overall at a high level in areas of performance appraisal recruiting and selection training and development respectively. Guidelines for human resource management of hotel business in Bangkok was overall at a high level in areas of performance appraisal recruiting and selection compensation and welfare respectively. The personal data of the respondents having different levels of education affected the guidelines of human resource management of the hotel business in Bangkok. There were statistically significant differences at the 0.05 level in 2 aspects that are training/development and performance appraisal. 2. With regards to the human resource management environment of the hotel business the strength was that there was support for employees to promote career advancement. There were good human resource management strategies as well as profitable welfare strategies. The weaknesses were ineffective communication lack of good English language skills and third language skills as well as a high staff turnover rates. During the 2019 corona virus epidemic every hotel had to adjust its strategies for increasing revenues to be able to take care of personnel in its organization. The obstacle was that during the 2019 corona virus epidemic the country was shut down to control the spread of infection transmitted from tourists. As a result the hotels revenue had declined. Then there was a need to reduce the wage rate and to reduce employment for the hotel to survive.

The purposes of this research were to 1) investigate personal factors of consumers in Bangkok after the outbreak of Coronavirus 2019 (COVID-19) 2) study information awareness in the widespread Coronavirus 2019 (COVID-19) 3) find out the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the Coronavirus 2019 (COVID-19) epidemic 4) study the relationship between personal factors and the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the outbreak of Coronavirus 2019 (COVID-19) and 5) examine the relationship between information awareness of the Coronavirus 2019 (COVID-19) outbreak and the new normal style of consumers’ behaviors in food purchasing options in Bangkok after the Coronavirus 2019 (COVID-19) outbreak. The sample was 400 consumers in Bangkok who were selected by stratified sampling. The research instrument used in this study was the questionnaire. The statistical analysis used in this study included frequency percentage means and chi square. The results of the study were as follows: 1) for personal factors of consumers in Bangkok most of them were female (222 participants) whose ages ranged from 20-30 years old. Their education was lower than bachelors level. Their occupations were company employees/private employees with an average income from 10001 to 20000 baht per month. 2) Regarding the awareness of the Coronavirus 2019 (COVID-19) pandemic the results showed that most of the consumers received main sourcesof information from the Ministry of Public Health family members and television channel. 3) In addition to the new normal style of purchasing food options the results reported that most consumers preliminary examined their readiness health check before going out to buy or use any services. The majority of consumers selected restaurants in the department stores buying a la carte for example meat rice and curry fried chicken bakery products instant noodles frozen meats and various Thai desserts. These consumers spending money less than 500 baht bought these products by themselves and making their own decisions. 4) Personal factors including gender and education level were correlated with the new normal style of consumers’behaviors in foods purchasing option with statistically significant at the .05 level. 5) For the outbreak information sources the informants reported that the widespread Coronavirus 2019 (COVID-19) was correlated to the new normal style of consumers’ behaviors in food purchasing options with statistically significant at the .05 level.

The propose of this research present a comparative study of the Reliability Improvement of Electrical System for Electric Mass Rapid Transit Train which describes in term of the power supply efficiency including voltage imbalance that could indicate how much the electric power quality is being more or less. The electrical system to be used in the Mass Rapid Transit system has 4 types of connection between three (3) phases of Metropolitan Electricity Authority (MEA) transformer and station transformer which is Single phase V-Type Scott and Le- Blanc to be considered for the different transformer connections type could be carried out and resulted in the most unbalanced in power supply as well as properly solution for power supply mitigation of voltage imbalance. From foregoing the data analyst was discovered that a single phase connection could cause the most unbalance voltage but on the other hand Le-Blanc connection is the least unbalance which could be reduced the impact on the Mass Transit Train and increase the credibility of consumers in order to continuity implement service usage.

The study used the fruit of Ficus hispida Linn to separation by maceration and sequential extraction method with hexane ethyl acetate and methanol to crude extracts. Crude extracts were assessed for their antioxidant activities tested using DPPH radical scavenging assay total phenolic contents tested using the Folin–Ciocalteu method The results showed that 1. Phytochemical examination of the extracts of F. hispida alkaloids condensed tannins phenolic compounds triterpenes steroids cardiac glycosides anthraquinones 2. Hexane Ethylacetate and Methanol extracts have the ability to reduce the amount of DPPH. The EC50 values were> 1000 285 and 30 g/ml respectively. 3. Hexane Ethylacetate and Methanol extracts contained phenolic compounds values of 3.09 55.25 and 99.59 mg GAE/g dw respectively.