จำนวน Repository ( 167 )

The expectency of Enterprices towards the characteristics of graduates of  Rajamangala in stitute of Technology,Bangkok Commercial Campus
The expectency of Enterprices towards the characteristics of graduates of Rajamangala in stitute of Technology,Bangkok Commercial Campus

The purpose of theis research was to study the expectancy of executives regarding the characteristics of graciuates of Rajamangala institute of TechnologyBangkok commercial Campus in three aspects: AcademicEthics and Professional Characteristics. This included the study of holistic and individual aspects as well as the comparisons of the characteristics of graduates of Rajamangala institute of TechnologyBangkok commercial Campus. The executives were classified by sexagetype of enterprisestype of businesssize of enterprises and major subjects of graduates. The samples in this research were 290 execitoves.The study participates selected by Stratified Fandom sampling. The instrument used was a questionnaire.The statistics used were Percentagemeanstandard deviation t -test One Way ANOVA and LSD.

2553
การพัฒนาผลิตภัณฑ์กระดาษจากฟางข้าว
การพัฒนาผลิตภัณฑ์กระดาษจากฟางข้าว

The objective of this paper was to study and development of rice straw paper and development of rice straw paper products-making. Part I. Rice straw paper-making. The bleached and unbleached with 2% HP2(aqJform rice straw fiber was boiled with 2% and 4% NaOH(aq) The 4 treatment was take out container and spread in to thin piece of paper. The 4 treatment were conducted to test physical properties and strength properties on rice straw paper. Part II Rice straw paper products-making. The populations in this research were 16 students and 16 teachers on RIT. Chotiwet Campus to making and evaluate the rice straw paper products. The instrument used in this research were questionnaires about the admission on specifics properties of rice straw paper products and satisfaction to rice straw paper products. The data were analyzed by SPSS program. The statistic used that mean standard deviation one way ANOVA and two way ANOVA. Differences between various groups were tested by Scheffs method.

2553
Using the kaolin with coir, rice straw and rice hush in concrete masonry unit wall for increasing effective heat protection
Using the kaolin with coir, rice straw and rice hush in concrete masonry unit wall for increasing effective heat protection

The objective of this research project is to develop an effectively applicable prevention of heat for concrete masonry unit wall. By using kaolin mixture coir rice straw and husk as a major ingredient in concrete to replacing usual stone dust the hollow non-load-bearing concrete masonry units obtained had the size of 70 X 190 X 390 mm. The test results showed that the reliably ideal ratio of these mixture materials had to be from the combination of kaolin coir rice straw and husk by replacing them at 5%: 5%: 15% and 50/0. The block obtained also had other certain qualifications such as Weight at 6.08 kg. water absorption at 7.96% and compressive strength at 65.4 ksc. Moreover these combined materials harbored heat capacity less than the standard concrete masonry units with the weight not more than 29%.

2553
Optimization of Infrared Radiation Heating in Disinfestations of Organic Hom Mali Rice
Optimization of Infrared Radiation Heating in Disinfestations of Organic Hom Mali Rice

There is a difficulty in using chemical in disinfestations process in organic rice products therefore this research was aimed to study the optimal setting of infrared radiation heating for disinfestations in Organic Hom Mali Rice. Disinfestations process and rice storage were collected by surveying coupled with interviewing the rice milling enterprise. The infrared radiation heating used in this experiment was belt type with lamp power of 1000 watt. In this study Design of experimental technique was applied to generate the optimum setting of the infrared heating process. The experiments generated by Box Behnken design were 15 experiments and 2 replicate times therefore the total experiments were 30 times. The 3 factors include heating temperature gap between rice and infrared lamp and rice layer thickness. The result from statistical data analysis at reliability level of 95 % shown that the optimization value were heating temperature of 70 oC height of lamp above rice of 10 cm. and rice thickness of 0.5 cm insects mortality rate within 2-3 minutes. Rice after heating were subjected to naturally slow cooling by air therefore rice quality in a good condition without broken or cracking.

2553
Effect of grinding on chemical and physical properties of rice husk ash
Effect of grinding on chemical and physical properties of rice husk ash

The effect of grinding on the chemical and physical properties of rice husk ash was studied. Four rice husk ashes with different finenesses i.e. coarse original rice husk ash (RHA0) RHA1 RHA2 and RHA3 were used for the study. Ordinary Portland cement (OPC) was partially replaced with rice husk ash at 20% by weight of binder. The water to binder ratio (W/B) of the mortar was maintained at 110%±5% with flow table test. Specific gravity fineness chemical properties compressive strength and porosity test of mortars were determined. The differences in chemical composition of the rice husk ashes with different finenesses from the same batch are small. The use of RHA3 produces the mortars with good strength and low porosity. The strength of the mortar improves with partial replacement of RHA3 in comparison with normal coarse rice husk ash. The use of RHA3 results in a strong and dense mortar which is due to the better dispersion and filling effect as well as an increase in the pozzolanic reaction.

2552