จำนวน Repository ( 3447 )
การบำบัดน้ำเสียจากสีย้อมผ้าด้วยกระบวนการโอโซนเนชัน โดยใช้ตัวกลางพลาสติก เคลือบผิวไทเทเนียมไดออกไซด์ชนิดรูไทล์เป็นตัวเร่งปฏิกิริยา
This research is to study the efficiency of treating wastewater from dyeing fabric by the ozonation process. By using rutile TiO2 coated plastic media to catalyze. Which uses O3 generators with a capacity of 2.62 - 3.10 g/hr. By studying the factors that affect the treatment efficiency of COD and color such as the pH of the water used in the treatment at pH 3 pH 7 and pH 11 the initial COD concentration of 100% 50% and 25% which have values in the range of 100 -320 mg/L. O3 exposure time 120 min. From the study it is found that the efficiency of reducing the impurities in wastewater by the ozonation process in the pH 11 state the COD concentration at 50% can reduce the COD. And the maximum color is at 33.3% and 90% from the 550 ADMI color intensity with a COD of 180 mg/L. For the study of the efficiency of reducing the impurities of wastewater by ozonation process together with 2 g. of TiO2/1 L. of wastewater in the condition of pH 11 concentration COD Beginning at 100% with the ability to reduce COD values And the maximum color is at 40% and 80% of the 270 ADMI color intensity with a COD of 190 mg/L. The amount of O3 suitable for treatment has an average value of 0.0374 g/min./10.5 L. of wastewater. The duration of O3 exposure in both processes has a similar approach to the efficiency of COD and color treatment when increasing the duration of O3 exposure.
การพัฒนาสื่อการสอนวิชาดาราศาสตร์ โดยการประยุกต์ใช้เทคโนโลยีความจริงเสริม
At present augmented reality (AR) technology has an essential role in peoples daily life. It has widely established in medicine commerce education just to name a few. This work presents the development of educational media in astronomy using augmented reality (AR) technology via website. It supports an inquiry-based learning (IBL) which is the one of pedagogy approaches for the 21st century education. Applying AR in educational media creating a 3D astronomy environment in the topic of solar systems making learners more motivated and eager in astronomy inquiry in order to construct scientific knowledge. Furthermore a post-test is conducted to observe the learning outcome from the educational media. To evaluate the development of educational media in astronomy using augmented reality (AR) technology the results showed the overall average satisfaction score of the system was 4.63 with a very satisfied level. Moreover it performs properly according to its mentioned objectives.
การศึกษาการใช้สีไทยโทนสำหรับงานเบเกอรี กรณีศึกษาครีมแต่งหน้าเค้ก
The purposes of the study of Thaitone colors using for bakery work: Buttercream case study were to examine the proper basic recipe of buttercream which used in the study of Thaitone mixing to examine the appropriate ratio of colors in mixing Thaitone colors for buttercream and to examine the acceptance of Thaitone colors using for bakery work. In terms of the entrepreneurs buttercream case study the experiment was planned by the Randomized complete block design (RCBD) at a 95 percent confidence level. The experiment was conducted to evaluate the sensory quality of appearance color odor taste texture and overall preference and compare the differences of the average by using the Duncan New Multiple Range Test (DMRT) and computer program. There were 30 participants for testing the taste with 5 – point hedonic scale method. The result showed that the third basic recipe of buttercream was accepted the most. The averages of appearance color odor taste texture and overall preference were 3.53 3.96 3.66 3.26 3.76 and 3.70 respectively. The result of physical testing revealed that it was stable insoluble and there was no expansion although at a 30- degree Celsius room temperature. According to the result of the study of the entrepreneur’s acceptance of Thaitone color buttercream it was found that Kulap color 45.47 17.44 and 2.67 were accepted the most from the entrepreneurs at the most level accounting for 35 percent. Chan color which its brightness was L*53.23 having a red-color value of a*2.16 and yellow-color value of b*26.01 was accepted the most from the entrepreneurs at the most level accounting for 45 percent. Also Namlai color which its brightness was L*45.39 having a red-color value of a*-19.03 and yellow-color value of b*-6.90 was accepted the most from the entrepreneurs at the most level accounting for 60 percent. According to the study of the entrepreneur’s acceptance of Thaitone color mixing guide for buttercream it was found that it could be applied with the bakery products in entrepreneur’s shops accounting for 100 percent. Moreover the Thaitone color buttercream mixing guide could be most productively applied in the bakery businesses accounting for 55 percent.
การศึกษาอายุวันของไข่ไก่ที่มีผลต่อผลิตภัณฑ์ปันจ์เค้ก
The objectives of the research on the different egg age affecting the sponge cake were to study the appropriate different egg age to bake the sponge cake and examine the physical and chemical qualities of the sponge cake. The density of the different age cake was measures using the randomized complete block design (RCBD) method at 95% reliability. The quality of senses sight color smell taste and texture and the overall preference were evaluated. The difference of mean was compared with by Duncan New Multiple Rang Test (DMRT) using a computer program to find the appropriate different egg age to bake the sponge cake. 30 testers applied the 5- point hedonic scale to test the product. Research results showed that the testers preferred the egg age at 9 days the most. Ln terms of taste texture and overall preference the mean was 3.70 3.67 and 4.00 respectively. The physical quality test results indicated that the texture of the one-day egg age had the best adhesion and flexibility 0.54 and 0.94 respectively. The egg age at 12 days had the highest lightness (L*) yellowness (b*) and redness (a*) 50.61 4.71 and 23.99 respectively with the statistical significance (p).≤ 0.05
การประยุกต์ใช้น้ำแข็งแห้งในการผลิตมูสช็อกโกแลตสำหรับการแข่งขัน ขนมหวานตะวันตกประเภทเย็น
The objectives of the research on the application of dry ice in making chocolate mousse for the cold western dessert competition were to study the appropriate time for freezing chocolate mousse and test the physical quality of frozen chocolate mousse using randomized complete block design (RCBD) method at 95% reliability. The quality of senses sight color smell taste and texture and the overall preference were evaluated. The difference of mean was compared with by Duncan New Multiple Rang Test (DMRT) using a computer program to find the appropriate time to freeze chocolate mousse. 15 testers applied the 5 – point hedonic scale to test the product. Research results showed that the testers preferred the product that was frozen for 40 minutes the most. In terms of color smell taste and overall preference the mean was 4.50 4.41 4.00 4.35 4.25 and 4.21 respectively. The physical quality test results indicated that the texture of the mousse frozen for 30 minutes had the best hardness adhesion and flexibility 27.53 3.17 0.43 and 1.21 respectively. The product frozen at 40 minutes had the highest lightness (L*) yellowness (b*) and redness (a*) 40.15 13.03 and 22.31 respectively with the statistical significance (p≤0.05).