The purpose of this study is to study the statement of problems in English writing and its relevant factors. The population and sample are students in the faculty of Business Administration in Business English Program Rajamangala University of Technology Phra Nakhon. The samples were 116. The research methodology is suNey research which is mixed method using both qualitative and quantitative method. The research instrument is questionnaire in English writing problems. The analysis of data conducted both descriptive statistics which are frequency percentage average and standard deviation and inferential statistics which are student-t and F statistics to analyze pair statistical differentiation of Shaffe method and the analysis of correlation coefficient. The results of the study can be depicted as follow: the highest frequency of the sample are sophomore students the high school grade of 12 average GPA in the range of 2.50-3.50 having experience in a Language school. The descriptive statistics of the sample parents are self-employed average monthly income of 30000 baht. The results about English writing problems are: incentive to write English at a high level English writing problems of overall sample at a high level. Sort the problems as follows: sentence structure grammatical and the use of words. Factors related to the writing problems in English showed that gender and parents occupation are statistically significant at 0.05 in writing English. The motivation to write English is related to problems in writing English without statistical significance.

This research presents the processing of fresh guava into guava juice product. to be kept for consumption and distribution in the local area It is an alternative career path that helps rural farmers earn more. and create additional careers for the family But farmers still lack the correct technology tools and processing methods in each production process. Therefore there was a problem of insufficient cleanliness taking a lot of time resulting in unacceptable quality and the production is low the postharvest engineering research group has conducted research to find suitable guava juicer. This study is based on working principles of food processing equipment in general use. Come as a guideline to develop improve and create prototypes. The original guava juicer was a grater roller squeezer. There is a guava-sized subsystem consisting of a sub-chamber with grated rollers and the waste water barrier system consists of a juice sieve chamber a waste separation room a spiral conveyer and a sweeper set. various parts that come in contact with the guava juice is made of stainless steel The power source uses a 1-horsepower electric motor a single-phase electrical system a voltage of 220 volts. The machine has the ability to block water at a rate of 250 kg / hour. The juice obtained must be filtered out again with a centrifugal bag filter capable of filtering water at a rate of 50 liters/hour. The prototype guava juice machine costs 40000 baht and the centrifugal filter bag costs 5000 baht. With just one such machine each of these machines can produce 28000 liters of guava juice/year (112000 bottles a year) able to get a return in 0.08 years with an average processing cost of 4.48 baht/bottle which is appropriate in engineering economics. In investment use a ready-to-drink guava juice machine. Fresh guava ingredients are available throughout the year and have 200 business days/year.

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 purposes of this study were 1) to study the operating status of knowledge management of the Faculty of Liberal Arts. 2) to study the problems of knowledge management of the Faculty of Liberal Arts. 3) to present the development form of knowledge management system of the Faculty of Liberal Arts. This research was a qualitative research. Analytical unit was Faculty of Liberal Arts Rajamangala University of Technology Phra Nakhon. The population was the staffs of Faculty of Liberal Arts. The samples were randomly assigned to 8 persons divided into 2 groups: 4 administrators 4 teachers. Research tools were related documents and semi structured interviews.The process of conducting research was to study and analyze the concept theory from Documents to create an interview form collected data from the interviews and analysThe results were found as follows: 1) the operating status of knowledge management of the Faculty of Liberal Arts was 3 steps; Steps to determine the authority structure of the responsible person to proceed knowledge management and the process of knowledge management. 2) The problems of knowledge management of the Faculty of Liberal Arts were 4 sides; (1) By Staffs : The staffs had a lot of obligations lack of leadership Lack of understanding with knowledge management. (2) By organizational structure : Because knowledge management section was not organized into organizational structures it is unclear about budget allocation for activities and allocation support personnel. (3) By organizational culture; it was not conducive to knowledge management. (4) By motivation : Motivation for control of knowledge is management was not clear such as awards. 3) the development form of knowledge management system of the Faculty of Liberal Arts was to consist of 5 keywords; Assignment Creation Usage To give Success. The explanation was as follows; Assignment It means a clear policy and accepted by all parties. Creation it means the creation of staffs to understand knowledge management and the creation of organizational culture into the learning organization. Usage it means to use information technology to help knowledge management and to use knowledge management processes. To give; it means to give a reward for motivation to participate in knowledge management activities. Success; it means all staffs must have the same goal: the success of being a truly learning organization.

The research objectives were aimed to scrutinize problems of quality control in accounting firms for accounting services in Nonthaburi. The samples used in this study were 105 accounting firms registered with the Department of Business Development with the business purpose was to provide accounting services in Nonthaburi province. The statistics used in data analysis were frequency distribution percentage mean standard deviation t-test and one-way ANOVA; then Least Significant Differentiation (LSD) was applied to test each pair. The results revealed that most chief accountants were 41-50 years old female with bachelors’ degrees and had more than eight years’ work experience. Most accounting firms were limited companies with the work duration period of serving 6 to 10 years with 1 to 5 employees and at least 50 customers. They had not been certified according to the announcement of the Department of Business Development. The overall problems regarding the quality control were relatively high. The highest aspect was related to ethics followed by the management responsibility within the accounting firms and work operation. Based on the hypothesis testing different ages and types of accounting had different opinions on quality control issues at 0.05 statistically significant difference; and different genders education levels experiences and work tenures number of employees number of customers and accreditation of accounting firms did not differ in terms of available opinions. ง Concerning problems regarding quality control in accounting firms employees should be promoted to enhance their knowledge and performance understand the quality assurance system of accounting firms. Also The Department of Business Development should provide trainings for accountants working for the accounting firms in order to achieve effective implementation and obtain higher potential for extra accounting quality.