จำนวน Repository ( 3611 )
The Development of Indian Women Dresses of Punjabi Style Made by Weaving Cotton Fabric from the North-eastern Part of Thailand
The purpose of this research was to study the development of Indian women dresses of Punjabi style made by weaving cotton fabric from the north-eastern part of Thailand. The sampling group was 250 Indian women who live in Bangkok selected by Quota Sampling and analyzed by SPSS. The research result found that the sampling group of people was married and under 30 years old were undergraduate degree or equal level. They were house wives with average income of 15001- 20000 baht per month. Most of them were born and lived in Thailand. They liked to use north-eastern Thailand cotton handmade dresses which could be affordable in Pahurat the Central of Bangkok. The reason why Indian women bought this kind of fabric and turned it into Indian Women dresses of Punjabi style because it was suitable and could be worn in many social occasions. The analysis result found that the five different kinds of north-eastern Thailand handmade weaving cotton fabric including their colors and designs could affect to the satisfaction of the development of Indian Women dresses of Punjabi style. The satisfaction in types of fabrics differed at the statistical significance level of .05. The satisfaction in touching surfaces of fabrics did not differ at the statistical significance level of .05.
Construction of Ear Model with Papier Mache to be Teaching Media for Medical Students, Faculty of Medicine, Thammasat University
The objective of this research was the comparison of the efficiency between Papier Mache model of components of human ears and standard medical model. The method was composed of the quality determination questionnaire of the established Papier Mache model by anatomy medical experts. The efficiency test of the Papier Mache model was performed by a group of 30 third years’ medical students. The statistics used in data analysis were mean standard deviation and T-test (T-test Independent). This research of Papier Mache model meets the quality of the standard model from foreign countries and can be used as the model for the instruction education.
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.
An Experimental investigation of the carbonation of blended portland cement palm oil fuel ash mortar in an indoor environment
In this research palm oil fuel ash was utilized as a pozzolanic material in blended Portland cement mortar. The mortar was tested on the normal compressive strength and the negative effect of carbonation in indoor environment using the accelerated carbonation test of 5% CO2 in 50% relative humidity. Three palm oil fuel ash fractions of different fineness viz. coarse original palm oil fuel ash (CPOA) medium palm oil fuel ash (MPOA) and fine palm oil fuel ash (FPOA) were used for the study. Ordinary Portland cement (OPC) was partially replaced by these palm oil fuel ashes at the dosages of 20% and 40% by weight of binder. The results showed that the incorporation of the ashes affected the strength and the carbonation depths of mortars. The strengths of mortar slightly decreased with the increases in the dosage of the ash. The fineness of ash on the other hand improved the strength and the carbonation of the mortars. The mortars containing FPOA exhibited high strength and relatively low carbonation in comparison to those using coarser MPOA and CPOA. The use of FPOA resulted in a strong and dense mortar owing to the increased packing effect and pozzolanic reaction. It was therefore demonstrated that the FPOA could be used as a pozzolanic material to replace part of Portland cement for use in the indoor environment.
Pore structure changes of blended cement pastes containing fly ash, rice husk ash, and palm oil fuel ash caused by carbonation
In this paper the effects of carbonation on pore structure of blended pozzolan cement pastes were investigated. Ordinary Portland cement _OPC_ was partially replaced with ground palm oil fuel ash _POA_ ground rice husk ash _RHA_ and classified fine fly ash _FA_. The strength total porosity specific surface area and pore size distribution were tested. In general incorporation of pozzolans increased the total porosity of blended cement pastes in comparison to that of OPC paste. Carbonation of pastes under 5% CO2 and 50% relative humidity _RH_ for 28 days resulted in filling of the pore voids and possible attack on calcium silicate hydrate _CSH_ depending on the type of pozzolan used. After carbonation total porosity decreased and specific surface areas of the blended pozzolan cement pastes reduced indicating the infilling of voids. Pore size distributions of POA and RHA pastes were different to those of FA pastes. Large pores of the POA and RHA pastes were increased indicating coarsening of pores owing to possible attack on CSH. It is possible that POA and RHA were highly reactive and hence their uses resulting in severe carbonation compared to use of FA.