English is now regarded as an important medium for international communication among people all around the world in politics education economics and tourism. Vocabulary is an important fundamental element for learning English. It is necessary for students to have lexical knowledge to develop their language proficiencies and communicative competence but Thai undergraduate students are not generally equipped with sufficient lexical items. The concepts and pedagogical implications of the lexical-based learning approach are proposed. It is hoped that this article will be highly beneficial to syllabus design and language instruction in the near future.

“Technology transfer to return productive citizen into the society” is a project of the technology clinic Rajamangala University of Technology Pra Nakhon Chumpornkhet-udomsak. The project objectives are job training for female prisoners and transferring good technological techniques to the community. The target group is female prisoners from the Central Prison and Thonburi Prison. The project is a vocational training workshop. It is found that 100% of trainees are satisfied with the program at a high level and businessmen are interested in ordering the prisoners’ handicraft products to sell in the country and export to other countries.

The objective of this research was to study and evaluate of the efficiency of moisture separation from hydraulic oil. This method was conducted by mixing pure water and oil in an oil tank which was classified into 4 cases: 250 ppm. 500 ppm. 750 ppm. and 1000 ppm. The results showed that when the maximum quantity of water was 1000 ppm. the 710 ppm. of moisture could be separated from hydraulic oil. The highest temperature at 70ฐC was utilized when that water was 750 ppm. The maximum efficiency was 80% when the quantity of water was 500 ppm.

The sugarcane and sugar industry had been an important part of economy of Thailand. As of the year 2006 Thailand was the 3rd world๛s exporter of brown sugar. The cultivation in year 2006-2007 of sugarcane was estimated at 63.8 million tons and the production of sugar was at 6.7 million tons (Office of the Cane and Sugar Board 2006). The environment impact of the sugarcane and sugar industry was taken into the research of life cycle assessment of 1 ton brown sugar Using the method of SimaPro version 7.1 the results found the crystallization causing high environmental damage was global warming 81% ozone depletion 56% acidification and eutrophication 78%.

This paper presents the analysis and the control of shunt-compensator for improving unbalanced voltages of power distribution systems in Thailand. The shunt-compensator is connected to the low voltage level in power distribution system. The analysis detail and the design of shunt-compensator obtain by using the voltage vector control (mathematical model with the stationary reference frame and synchronous reference frames). The unbalanced voltages are identified by using positive and negative sequence detection that can be shown in the synchronous reference frame. This method also presents the decoupling control including feed-forward control to compensate both positive and negative sequence component of grid voltage. The power circuit of the shunt-compensator and the distribution network are modeled by Provincial Electricity Authority (PEA) of Thailand that is the same as worldwide standard of power distribution system. By using computer program the simulation results showed the benefit and the performance of proposed methodology which obviously ensure the performance of shunt-compensator for mitigating the unbalanced voltages.