This research was concerned a printing on cotton fabrics with dye powder from mangosteen rind. In this study the dye powder was composed of dye’ s solution extracted from mangosteen rind and maltodextrin 15 % . The dye powder was applied to a cotton fabric by screen printing technique and a pigment based print paste was used as a print paste in the printing process. Aluminium potassium sulphate (AlK(SO4)2·12H2O )and Iron (II) sulphate (FeSO4·7 H2O) were used as mordants in post-mordanting process. The influences of mordanting on colour appearance and fastness properties of printed fabrics were investigated. The colour fastness to washing and rubbing of printed fabrics was performed according to the present ISO standard. The results show that the post- mordanting can improve the colour fastness properties of printed fabrics. The ratings of colour fastness to washing and rubbing of the printed fabrics with the mordant were good. The appropriate amount of the mordant is 5 grams per liter and duration in the range of 5 minutes to 15 minutes seem to be a suitable time for the post- mordnating process. The type of mordant produced an effect on the colour appearance of the printed fabrics after mordanting.

This thesis fashion is intended to study the development of a apparel model that reflects the beauty of wisdom. Silk cloth by study of patterns and Yotkan woven silk weaving to develop a ladies style costume. By bringing the appearance of the material and that can be taken and the pattern and color of silk to blend with clothing techniques. On the costume make the wearer elegant and reduce the cost of Dasuea fabric from the silk cloth. The tools used in this study are two analytical types including material and weaving equipment with 2 aspects of analytical analysis. 1) Layout 2) pattern and type fabric analysis silk prairie with 2 side analysis criteria 1) pattern 2) color focuses on physical characteristics and overall analysis to create a apparel model. The outcome of the study showed that the appearance of the material and weaving equipment looks as a geometric shape. There is a clear layout and appearance of silk fabric Khit and Jok fabric providing a beautiful pattern and the information that has been applied to the apparel design by pay attention to the theme and choosing the right silk cloth to cut into the clothes to make the costumes look beautiful and attractive. It also reduces production costs.

This work aimed to study the improvement of mechanical properties and cost reduction of biodegradable packaging made from polylactic acid (PLA) by using sisal fiber. Because sisal fiber as natural fiber is good mechanical properties biodegradable material and low cost. The variables studied were the addition of sisal fiber surface treatment with epoxy silane and fiber direction. Their effects were investigated by tensile flexural and impact testings and morphology analysis. The results suggested that the addition of sisal fiber increased Young’s modulus Flexural modulus and ultimate tensile stress whereas elongation at break and impact strength tended to decrease. For the effect of surface treatment it was found that tensile and flexural moduli increased with epoxy silane treatment but tensile flexural and impact strengths slightly changed. Surface treatment by epoxy silane led to good interfacial bonding by hydrogen bonding between oxirane ring of epoxy silane and hydroxyl group of PLA. The effect of fiber direction revealed that tensile properties of composite in fiber direction of 0o were higher than those of composite in fiber direction of 45o. Fiber direction did not affect flexural and impact properties.

Oil spills in every household caused by cooking are difficult to eliminate when accumulating for a long time. In this study the researchers aimed to develop the remaining coffee grounds for oil absorption. From 2 coffee ground samples types A and B obtained from different coffee shop & coffee grounds type A demonstrated more effective in absorbing vegetable oil. The sample A was thus treated with hydrogen peroxide (H2O2) solution at the concentration of 0.5 1 3 33 50 80 and 100 percentages for 30 minutes and determined for the efficiency in oil elimination. The sample with at least 80 % (v/v) H2O2 showed the most effectiveness in absorbing oil. The coffee grounds that were later treated with pineapple juice fermented Kefir could help increase coffee ground degradation at 51.07 percentages. The Kefir treated coffee grounds packed in an absorbent bag revealed higher effectiveness in oil absorption at least 51.07 percentages compared to the controls that were cotton bag and coffee a harboring at the percentages of 73.85 and 30.04 respectively. This coffee ground bag after thrown into the ground could be decomposed in nature for 52 percentages within 1 month. Due to the oil elimination properties of the coffee grounds that are environmentally and human friendly as well as low cost it is possible to develop the kefir treated coffee grounds for being oil-absorbing products that can come in contact with human skin.

This research aimed to study the relationship between financial ratios of operating efficiency and profitability of listed companies on the Stock Exchange of Thailand. Data was collected from the financial statements of the real estate and construction groups from 2015 to 2019. The data were analyzed using descriptive statistics such as frequency percentage mean and standard deviation. The inferential statistics were Pearsons Correlation Coefficient and Multiple Regression Analysis. The results of the study found that 1. operating cash flow activities positively correlated with the return on asset 2. the debt to asset ratio was negatively correlated with the gross profit margin net profit margin return on asset and return on equity 3. average collection period was negatively correlated with the gross profit margin and net profit margin 4. inventory turnover had a negative correlation with the return on asset 5. the total asset turnover was positively correlated with the net profit margin return on asset and return on equity with the statistical significance at a level of 0.05.