The purposes of this research were to study of chemicals management problems in Thailand s higher educational Institutions. It also focused on comparing of problems level of teachers who were different in sex age educational level Institutions and chemistry teaching experience. The sample of this research was 205 chemistry teachers in the Department of Chemistry Faculty of Science from 14 Institutions in Bangkok and in related other areas in Thailand s Higher Educational Institutions. The instruments used in this research were the questionnaire of 5-rated rating scales of those 4 categories. The reliability of the questionnaire was that the storage of chemicals 0.80 the using of chemicals 0.75 the disposal chemicals 0.84 the chemicals hazardous prevention 0.79 with the total average of 0.82. The data were analyzed by Statistical Package for the Social Science for Windows(SPSS for windows). The statistic used was mean standard deviation Hest one-way ANOVA and Tukey HSD of Multiple Comparison Test. The results of the research were: 1. The chemistry teachers had the problems of those 4 categories of chemicals management of chemistry laboratories as well as the overall average value at the medium level. 2. The chemistry teachers with differences in sex had the problems of those 4 categories of chemicals management of chemistry laboratories as well as the overall average value of non-significant differences. 3. The chemistry teachers with differences in age had the problems of those 4 categories of chemicals management of chemistry laboratories as well as the overall average value of significant differences. 4. The chemistry teachers with differences in educational level had the problems level of the overall average value of significant differences in master educational level with doctoral and post doctoral educational level. 5. The chemistry teachers with differences in Institutions had the problems level of the overall average value of significant differences in old Institutions with Kingmongkok Rajabhat and Rajamangala Universites. 6. The chemistry teachers with differences in chemistry teaching experience had the problems level of the overall average value of significant differences in less than 5 year 5-10 year and.more than 10 year.

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.

Feasibility Study of the enhancing of the color removal efficiency in wastewater using aluminium sulphate with burned husk as a core coagulant in the coagulation process is investigated. The compositions of wastewater from traditional alcoholic beverage factory are given as follows: pH of 4.15-4.24 suspended solids of 204-300 mg/l COD of 4761-5644 mg/l color intensity of 21.05-35.90 S.U. and turbidity of 166-197 NTU. The experimental results revealed that using aluminium sulplate at concentration 0.4 g/l with burned husk sieve number 100 mesh at 2.2 g/l and aluminium sulphate at 0.5 g/l together with burned husk of size 200 mesh at 2.6 g/l can enhance the efficiency of color removal in wastewater. The color removal efficiencies were at 83.06% and 86.00% respectively.

The purpose of this research was to study the dyeing polyamide/elastane fabric with natural indigo using exhaustion dyeing process. The effects from the concentration of the natural indigo dye thiourea dioxide and sodium hydroxide were investigated. The colour of each dyed material was investigated in term of the CIELAB (L* a* and b*) and K/S value. The color fastness to washing rubbing perspirdation light water sea water and chlorinated water of the dyed samples was determined. The bursting strengrh of dyed polyamide/elastane was evaluated. The best vatting condition was at 50 ̊C for 30 minutes. The optimal formula of dyeing polyamide/elastane fabric using natural indigo was prepared by mixing 200 g/L natural indigo paste 60 g/L thiourea dioxide 1 g/L sodium hydroxide. The fabric dyed in the solution of indigo vatting a shade of dark blue colour. The color fastness to light washing water sea water perspiration and chlorinated water were good to very good. However the rubbing fastness results showed fair level. The bursting strength of dyed fabrics is less than the undyed fabric 3.1%. The optimal ratio of discharge printing on polyamide/elastane fabric were compose of 70 % starch print paste and 30 % discharging agent (KMnO4). The pattern design produced from these combinations in the printing areas on fabrics showed an excellent standard of printing quality. The results confirmed that natural indigo dyes have potential applications in polyamide/elastane fabric dyeing and the dyed fabric can be used produce women’s intimate apparel.

Nowadays the measurement technologies are continually growth in advanced. These can be seen in the developed and developing countries that research and develop the products which support the consumer behavior and/or country economy ic growth. However some advanced products are very expensive such as pH meter. Therefore this thesis develops the pH meter which allows the acid-base test of the water and it can be supported the agriculture. The proposed pH meter is included the pH pen sensor temperature sensor water level sensor. The proposed meter can measure the acid-base of the water by sending SMS alert signal via GSM module to the mobile phone of the farmer. As can be seen this thesis can prevent and solve the effect of the high acid-base of the water that possibly flows into the agriculture farm via using SMS alert signal of the mobile phone of the farmer.