Nowadays increasing water pollution has put significant pressure on water resources. Natural organic matter and organic micro-pollutants have been found in potentially harmful concentrations in numerous water sources. Phthalate plasticizers are also micro-pollutants of concern; Di- (2-Ethylhexyl) phthalate (DEHP) is one of the most frequently observed plasticizers in the environment as well as one of the most persistent. The maximum permissible levels of these compounds in drinking water and wastewater discharged to the environment are set at low concentrations. In this research water samples were collected from the New Bang Kaen Canal in Bangkok Thailand (13°4906.1N 100°3042.4E) which receives wastewater from human activities and contains impurities in the water. Several common treatment technologies currently used to remove inorganic and organic contaminants from natural water supplies address serious environmental problems. Properly selected microfiltration membrane processes are elements of effective systems for water purification. Polymeric membranes are of primary interest for membrane separation techniques because they are both practical and effective. However pretreatment before using a microfiltration membrane is necessary for suspended solids reduction. This research used two types of polymeric membranes namely cellulose acetate membrane (CA) and polyvinylidene difluoride membrane (PVDF) and covers the most applicable requirements regarding pretreatment of the water intake. The performance of polymeric membranes for water treatment was also investigated. The water quality of the New Bang Kaen Canal was assessed in terms of turbidity SS and COD. This research has the potential to contribute to the monitoring of water quality in the New Bang Kaen Canal. Water quality monitoring is a fundamental tool for water resources management. The performance of polymeric microfiltration membranes was effective for water and wastewater purification in terms of solids organic substances and micro-pollutant i.e. DEHP compounds. Nevertheless the further development of polymeric membranes regarding fouling on the membrane surface and within pores needs to be improved to increase membrane performance and ameliorate the limitations of microfiltration polymeric membranes.

The objectives of this research were to study the growth rate of microbial sludge in the fermented juice and to study the efficiencies of fermented juice and melodies on Fairy Rose growth. In the experiments the growth rate of microbial sludge was analyzed with 10 parameters for 4 weeks. Moreover the Fairy Rose was divided into 2 groups used and non-used the fermented juice. Each experimental group was tested with 3 types of melodies including jazz classical and Mozart. All experiments were set 3 replications by the total number of 24 Fairy Roses. The growth of the Fairy rose was analyzed by considering the number of leaf Height length of root and mass. The experimental results showed that the growth of microbial sludge in fermented juice was good and produced microbial sludge in fermented juice approximately 1063 ±158 mg/L on average. The Fairy Rose more growing with water and fermented juice. The number of leaves was 144±11 leaves in average Height was 30±1 cm in average Length of root was 38±8 cm in average and weight of Fairy Rose at the end of experimentation was found 400 g in average. In the case of melody affected Fairy Roses growth was classical. The growth of fairy roses found that the number of leaves was 143±6 leaves in average height was 29±1 cm in average Length of root was 34±1 cm in average and weight of Fairy Roses at the end of experimentation was 93 g in average

The research on the Knowledge Management Resulting in Performance Effectiveness of Personnel in a State Enterprise in Bangkok is aimed to 1) Study knowledge management of personnel in a state enterprise in Bangkok. 2) Study effectiveness of personnel in a state enterprise in Bangkok. 3) Study knowledge management which results in performance effectiveness of personnel in a state enterprise in Bangkok. The sample groups selected by the Proportional Stratified Random Sampling consisted of 142 staffs of a state enterprise. The researcher received 142 returned questionnaires. The statistics for data analysis consisted of percentage mean and standard deviation. T - test and F - test were used to test the hypothesis. Moreover the Stepwise Multiple Regression Analysis was conducted at the significance level of 0.05. Data analyzing results found that most of the sample groups were females aged 26 -30 and educated at the bachelor degree. Employment duration of the sample groups was 11-15 years. In general the perception of knowledge management within an organization was at a high level. The hypothesis testing results found that different personal factors on educational background and status caused difference in the deviant working effectiveness on quality and quantity respectively. Knowledge management of staffs in this state enterprise resulted in working effectiveness

The study was aimed to investigate motivating factors of state enterprise community relation personnel work efficiency of a state enterprise community relation personnel and the relationship between motivating factors and work efficiency of a state enterprise community relation personnel. The population used in this study was 96 personnel working in a community relations unit. The statistics used in the data analysis included frequency percentage mean and Rho (ρ) to test the correlation coefficients. The results of the study revealed that most respondents were married males who were over 51 years old with bachelors degree earning 20501 baht income salary. The duration of their work was over 20 years in the professional position levels of 4 to 7. It was found that the personnel’s work efficiency was at a high level. When looking into each aspect it was found that the relationship of work advancement and work policy and administration was moderate while the aspects in terms of income responsibility acceptability security governance job description personal life relationship with the management and work condition were relatively low with the 0.05 statistical significance

The purpose of this descriptive study is to behaviors perceived communication effectiveness and the relationship between communication behaviors and perceived intra-organizational communication effectiveness using 70 sets of closed-end questionnaires as a tool for data collection from employees at a selected independent organization. Statistical methods for data analysis included percentage mean( μ ) standard deviation( σ) and correlation coefficient. The results of the study indicate that most of the survey respondents ae male aged 51 years and older with a marital status. The education level is bachelor’s degree. In respect of information perception intra-organization matters are the main priority among employees with a focus on the information within the organizational unit they belong to or benefits related to them. With regard to communication frequency and channels internal email is mainly used followed by Facebook and Line respectively due to restricted access to communication tools at work. On aspect of intra-organizational communication efficiency straight-to-the-point communication speed and perception are found mainly with the matters within the organization or the work unit the employees belong to. When considering the credibility of the information the emphasis is placed on the content of the order coming from within the organization substantially affecting the communication efficiency. Thus there is the close relationship between information perception and intra-organizational communication efficiency as the correlation is significant at 0.05 level. It can be said that employees at this organization pay considerable attention to the information within organization.