DEVELOPING WRITING THROUGH ORGANIZING ENGLISH LEARNING ACTIVITIES FOR COMMUNICATION WITH B-SLIM MODEL OF STUDENTS IN ENGLISH FOR INTERNATIONAL COMMUNICATION MAJOR, RAJAMANGALA UNIVERSITY OF TECHNOLOGY TAWAN-OK

This study aims to investigate developing writing through organizing English learning activities for communication with B – SLIM Model. The sample of this study was purposively selected from 35 of first year students in English for International Communication major, Rajamangala University of Technology Tawan-ok in Integrated Skills in the English Language course of 2021 academic year. The research instruments consisted of an essay writing assignment of at least 500 words, a form for writing error record, students' satisfaction with B-Slim Model learning activities and focus group activity to identify the causes of errors. The results based on the writing errors indicated errors before taking course including subject-verb agreement (33.10%), sentence boundaries (30.31%), and clause boundaries (36.59%) and after finishing course as follows: subject-verb agreement (9.82%), sentence boundaries (30.36%), and clause boundaries (59.82%). The efficiency of the English learning management based on B-SLIM Model was 73.45/80.32, which was higher than the criteria set at 70/70. The ability of English writing after learning using B-SLIM Model was better than writing without applying B-SLIM Model. The satisfaction the students taught by B – SLIM Model was most satisfied at (x) = 4.63 (S.D=1.44).  Errors committed in English writing were mainly caused by L1 interference and limited knowledge of English structure

ANALYSIS OF ENGLISH SENTENCE STRUCTURES IN THE SPEECH OF STUDENTS MAJORING IN ENGLISH FOR INTERNATIONALCOMMUNICATION AT RAJAMANGALA UNIVERSITY OF TECHNOLOGY TAWAN-OK

This research aims to investigate the utilization of English sentence structures in spoken language, the occurrence of errors in employing English sentence structures in spoken language, and the level of satisfaction with teaching through the B-SLIM Model. The study involved a sample of 35 first-year students enrolled in the English for International Communication program at Rajamangala University of Technology Tawan-ok. The participants were chosen through a specific sampling procedure. Data collection encompassed the utilization of 7 B-SLIM Model lesson plans. The research design included a pre-test and post-test on English speaking abilities. Additionally, a satisfaction questionnaire gauging students' contentment with B-SLIM Model learning activities was administered, along with a focus group session that delved into the reasons behind speaking errors. The collected data underwent analysis to determine the mean, standard deviation, and percentage. The findings revealed that students employed singular sentences in the form of declarative statements with using the active voice. Following the integration of B-SLIM Model lesson plans into the curriculum, students demonstrated an enhanced ability to construct compound sentences, complex sentences, and compound-complex sentences. Regarding the occurrence of errors in employing English sentence structures within spoken language, the errors were categorized based on word type and word order

Hot Air Dryer with Closed – Loop Oscillating Heat Pipe with Check Valves for Reducing Energy in Drying Process

AbstractThis research was studied to saving energy of hot air dryer with closed-loop oscillating heat pipe (CLOHP/CV). The CLOHP/CV made from a copper tube with inner diameter of 2mm. The evaporator and condenser lengths were 18cm. The adiabatic length was 20cm. Distilled water with 50% by total volume of tube was filled into CLOHP/CV. The number of meanderings was 40. The temperature for testing was 50, 60, 70, 80 and 90 oC. The hot air flow rate was 0.5, 1.0 and 1.5 m/s. The results of the normal hot air dryer and the hot air dryer with CLOHP/CV, it was found that the hot air dryer with CLOHP/CV can save thermal energy more than the normal hot air dryer. Moreover if determine in saving electrical energy, the hot air dryer with CLOHP/CV can save energy more than the normal hot air dryer by average of 28.13%

Theoretical and experimental drying of a cylindrical sample by applying hot air and infrared radiation in an inert medium fluidized bed

Drying of a cylindrical sample in a fluidized bed dryer containing inert particles was studied. For this purpose, a pilot-scaled fluidized bed dryer was constructed in which two different heat sources, hot air and infrared radiation were applied, and pieces of carrot were chosen as test samples. The heat transfer coefficient for cylindrical objects in a fluidized bed was also measured. The heat absorption coefficient for carrot was studied. The absorption coefficient can be computed by dividing the absorbed heat by the carrot to the heat absorbed for the water and black ink. In this regard, absorbed heat values by the carrot, water and black ink were used A mathematical model was proposed based on the mass and heat transfer phenomena within the drying sample. The results obtained by the proposed model were in favorable agreement with the experimental data