The purposes of this research were to developed the tea Product from Ya Nang Melientha suavis and safflower. The objective was to study the optimum drying conditions of Ya Nang tea leaf and Melientha suavis 2) to study the optimum ratio between Ya Nang tea leaf and Melientha suavis and Safflower in the tea formulation and 3) to study the acceptance of Ya Nang tea products with Melientha suavis and safflower flowers from consumers It was found that the suitable drying time of tea leafe was 4 h at 60o c with moisture content lower than 10% that was in agreement with standard. The proper ratios between Ya Nang Melientha suavis and Safflower such as 100:0:0 60:20:20 60:30:10 and 60:10:30 were evaluated the sensory properties by 30 panelists. It was found that the highest acceptability sure was found in formulation 3. In addition the DPPH radial scavenging activity and phenolic content were 66.51 μM Trolox/ml and 14.46 mg GAE/ml respectively for the accepted tea formulation. For the consumer test (120 consumer) the data relating to product interest acceptability and antioxidant properties were 59.20% 96.70% and 75% respectively. This results indicated that tea Ya Nang Melientha suavis and Safflower is accepted by consumer.

The objective of this research is to develop the high corrosion resistance and good thermal insulation precast adobe wall panels mixed with natural latex. The 6 ratios of Portland cement type1: clay: rice husk ash: straw: rice husk:waterproofed liquid: natural latex: tap water were designed including: 1: 3: 0.3:0.02: 0.02: 0.02: 0: 0.4 1: 3: 0.3: 0.02: 0.02: 0.02: 0.05: 0.4 1: 3: 0.3: 0.02: 0.02: 0.02:0.1: 0.4 1: 3: 0.3: 0.02: 0.02: 0.02: 0.15: 0.4 1: 3: 0.3: 0.02: 0.02: 0.02: 0.2: 0.4 and 1:3: 0.3: 0.02: 0.02: 0.02: 0.25: 0.4 by weight. The precast adobe wall panels castedas same as the common concrete and reinforced by the bamboo. From the resultsthe proper ratio of precast adobe wall panel mixed with natural latex was 1: 3: 0.3:0.02: 0.02: 0.02: 0.1: 0.4 ratio. The properties of the proper precast adobe wall panelincluded density 1810.83 kg/m3 water absorption 17.16 % compressive strength 15.13MPa bending strength 3.01 MPa thermal conductivity coefficient 0.234 watt/m.Kelvin. Moreover the proper precast adobe wall panel mixed with natural latex also was verified by TIS.2226-2548 with properties of impact resistance deflection and hardness in medium duty (MD) level. The proper amount of natural latex effected the precast adobe wall panels to improve the mechanical properties including: increase the compressive and tensile strength decrease the density thermal conductivity coefficient and water absorption.

This research aims to develop the natural rubber and ethylene vinyl acetate (EVA) plastic floor tile with flame resistance property. The 6 ratios of natural-rubber STR 20: zinc oxide: stearic acid: sulfur: mercaptobenzothiazole: diphenyl guanidine: EVA plastic: antimony trioxide were equal to 100: 5: 2: 3: 0.5: 0.2: 20: 0 100: 5: 2: 3: 0.5: 0.2: 20: 20 100: 5: 2: 3: 0.5: 0.2: 20: 40 100: 5: 2: 3: 0.5: 0.2: 20: 60 100: 5: 2: 3: 0.5: 0.2: 20: 80 and 100: 5: 2: 3: 0.5: 0.2: 20: 100 by weight or phr. The samples are ground by two-roll mill and formed by compression molding at 150 degree Celsius with 30x30x0.2 cm of dimension for 4: 29 to 5: 19 minutes. The properties of the natural-rubber floor tiles were tested under ASTM standard. From the results it was found that the natural rubber and ethylene vinyl acetate plastic floor tile with flame resistance property was the suitable ratio for using as the rubber floor tiles in building and extinguished a fire by themselves. The antimony trioxide effected to increase the density hardness and thermal conductivity and decrease the tensile strength tear strength and wear resistance properties of the natural rubber and EVA plastic floor tiles

The objective of this research is to develop the precast adobe wall panel with high corrosion resistance and good thermal insulation. The ratio of Portland cement type1 clay rice husk ash straw rice husk waterproofed liquid and tap water was mixed and casted as same as the common concrete and reinforced by bamboo. From the results the proper prototype ratio of precast adobe wall panel was Portland cement type1: clay: rice husk ash: straw: rice husk: waterproofed liquid: tap water which equal to 1: 3: 0.3: 0.02: 0.02: 0.02: 0.4 by weight. The properties of the precast adobe wall panel prototype included density 1797 kg/m3 water absorption 16.70% bending strength 2.61 MPa compressive strength 21.40 MPa thermal conductivity coefficient 0.314 watt/m.Kelvin. Moreover the precast adobe wall panel prototype also was verified by TIS.2226-2548 with properties of impact resistance deflection and hardness in medium duty (MD) level. These straw and rice husk effected the precast adobe wall panel to decrease the density bending strength thermal conductivity coefficient and increase the compressive strength and water absorption.

Based on the research on creation of bas-relief molds for production of bas-reliefs made from boiled pineapple leafs conducted by Rachadasak Pengcum of which purpose was to help generate income for members of Pineapple Leaf Paper Community Enterprise Ban Pasang Wiwat Mueang District Chiang Rai Province it was found that the bas-reliefs need further improvements in terms of appearance and durability as well as the use of other natural raw materials to produce them. The researcher therefore has considered developing the previous research by applying other 3 valueless natural materials which include rice straw water hyacinth and banana stem skin to make bas-reliefs for different beautiful surfaces of the products. Also the quality of bas-reliefs has been comparatively investigated by surveying satisfactions of members of the Community Enterprise and visitors to the project towards the bas-reliefs made from rice straw water hyacinth and banana stem skin. The total period of questionnaire distribution was 3 months. There are 59 respondents administering the questionnaires most of whom (43 persons) are female which accounts for 72.88 per cent. The majority of the respondents (25 persons) obtained junior/senior secondary school diplomas or equivalent accounting for 42.37 per cent. 16 respondents or 27.12 percent are 60 years of age. As for satisfactions towards the bas-reliefs made from rice straw 89 times of “strongly agree” was selected whereas 126 times of “pretty much agree” 75 times of “fairly agree” and 5 times of “disagree” were marked by the respondents. Concerning the bas-reliefs made from water hyacinth 87 times of “strongly agree” was selected while 97 times of “pretty much agree” 110 times of “fairly agree” and 1 time of “disagree” were chosen. When asked about the bas-reliefs made from banana stem skin the respondents selected 77 times of “strongly agree” 99 times of “pretty much agree” 110 times of “fairly agree” and 8 times of “disagree”.