This research was study the production of essential oil from tobacco leaves for insect repellents. To increase value and development of new products form tobacco leaves. This product is environmental friendly. In this research is divided into two parts: Laboratory scale and get a knowledge to the municipal in Nhongkhai province. Nicotine is an insecticide that effect to insects. This product evaporated pass through natural packaging. A natural packaging can be easily degradation in the environment. Moreover this product also helped to reduce the hazardous chemicals or pesticides usage and not residues for long time.

This research work was to study the effect of surface treatment of natural fiber and the effects of type and content of natural fiber on the development of acoustic material from natural rubber foam /natural fiber composites. The surface treatment used for this research work was sodium hydroxide (NaOH) treatment. NaOH Concentrations and treatment times were varied from 0 to 15 %wt. and 0 to 30 min respectively. Natural fibers used for this work were bagasse fiber (BF) and oil palm fiber (OPF). The suitable condition for surface treatment was estimated by fiber length and diameter (L/D) ratio and morphology of natural fiber. The result suggested that L/D ratios tended to increase when NaOH concentrations and/or treatment times increased except for NaOH concentration of 15 %wt. L/D ratios of OPF after surface treatment were changed more than those of BF. The suitable conditions of NaOH treatment for BF and OPF were NaOH concentration of 10 %wt. and surface treatment times of 30 and 10 min respectively. The effects of fiber type and content on sound absorption properties of natural rubber foam /natural fiber composites were investigated by cell characteristics sound absorption coefficient DMA analysis and bulk density. Both treated BF and OPF with suitable treatment condition were varied from content of 0.0 to 10.0 %wt. The result showed that the cell size of composites tended to decrease with addition of natural fiber whereas number of foam cell per unit volume increased. After adding natural fiber more than 2.5 %wt. cell size of composite foam and number of foam cell per unit volume tended to change the inverse direction. Natural fiber in composites enhanced the sound absorption efficiency. Sound absorption coefficient of composites adding BF was more than that of composite adding OPF. The addition of natural fiber enhanced the elasticity of composites and that increased sound absorption efficiency. NaOH treatment led to creation of strong interfacial bonding between natural fiber and natural rubber and enhanced the sound absorption efficiency. Density of NR composite foam increased with increasing natural fiber content.

The survey research aimed to: 1) study the levels of self-development needs in preparation to enter AEC; 2) make a comparison of the students’ needs levels in aspects of personal data; and 3) propose appropriate forms of activities to be used in the development. The subject obtained through stratified random sampling consisted of 321 first-fourth year undergraduates of the Faculty of the Home Economic Technology Rajamangala University of Technology Phra Nakhon. The tool was a questionnaire. To analyse data the frequency percentage mean standard deviation t- test and ANOVA were used. The results were as follows: 1) The overall level of self-development needs was high ( X = 3.75). The needs for selfdevelopment in line with the Thai Qualifications Framework for Higher Education were high ( = 3.89). Moreover the level of needs conforming to Thai Graduate Preferable Qualifications for the ASEAN Community was moderate ( X = 3.46). 2) There was no statistically significant difference ( p<0.05) of the self-development needs level when genders educational levels or academic performances were considered 3) As for the activities it was rated best to use training for the development of cognitive skills numerical analysis communication and information technology skills domain of psychomotor skills and knowledge on ASEAN Community rules and regulations; lecturing for knowledge on ASEAN Community rules and regulations; study touring for knowledge development; camping for ethics and moral interpersonal skills responsibility and language skills; and student inter institutional exchanging for neighbouring countries knowledge development.

The purposes of this study were to investigate problems regarding the use of enterprise resource planning (ERP) in Accounting Department of Rajamangala University of Technology Phra Nakhon and obtaine the results of the study as suggestions according to their personal data. The samples were 92 ERP users working in different departments based in Rajamangala University of Technology Phra Nakhon drawn from purposive sampling. The data were collected from a set of questionnaires and analyzed by the percentage frequency distribution percentage standard deviation (SD) t-test One-Way Analysis of Variance and the analysis of pairs applying Sheffe’s Method. The findings were revealed as follows. 1. The level of the problems regarding the use of Enterprise Resource Planning (ERP) in Accounting Department of Rajamangala University of Technology Phra Nakhon was in the average level. 2. The analysis of the problems regarding the use of Enterprise Resource Planning (ERP) in Accounting Department of Rajamangala University of Technology Phra Nakhon varied in their education levels study fields experiences using ERP the number of ERP trainings was not different at 0.05 statistical significance in the overall. 3. The analysis of the problems regarding the use of Enterprise Resource Planning (ERP) in Accounting Department of Rajamangala University of Technology Phra Nakhon varied in their experiences and job responsibilities using ERP the number of ERP trainings was different at 0.05 statistical significance in the overall.

The purposes of this study were to 1) develop a professional skills course for promoting income of the elderly at the senior people club in Uthai district Ayutthaya 2) evaluate the effectiveness of the professional skills course for promoting income of the elderly at the senior people club in Uthai district Ayutthaya and 3) the implementation of the effective professional skills course for promoting income of the elderly at the senior people club in Uthai district Ayutthaya with the target group of 60 people. The research instruments were 1) a professional skills course for promoting income of the elderly comprising six units namely 1) The Elder And The Home Economics professions 2) Foods For Being Rich 3) Clothing and Accessories 4) Home Furniture 5) Herbs and Souvenirs and Professional Training for Additional Income. Other research instruments included the assessment forms to seek for 1) for the suitability 2) the association and the satisfaction of the course. The data were analyzed by the percentage distribution mean and standard deviation. The course development was divided into two phases: 1) the course outline which covered the principles objectives contents applications of the course as well as the course assessment; 2) the course assessment concerning its suitability and association. It was found that the suitability was in good level and the course association rate was higher than the expectation. After the course trial in actual situations and some improvement the course was satisfying and adequately appropriate for implementing with the target group which were 60 senior residents in Uthai district Ayutthaya for three days. The satisfaction for the attending the course was measured and the result revealed high satisfaction toward the professional skills course.