Admittedly a disc brake plays an important role in the auto part industry since it concerns directly with safety. Therefore the wide range of disc brake has been designed in order to develop its heat ventilation. Thus this project has designed a back-vented brake disc which is difference the current one (front-vented) and tried to create the test to find out the temperature diffusion of the disc brake with the hope to evaluate the coefficient of the heat convection varied by the temperature changing in both kinds of brakes under the forced heat convection in the steady condition. However the steady heat conduction and radiation value will not be counted because it is insignificant. The JASO C406: 2000 Standard is adopted as a guideline in the test. The outcome coefficient of heat conduction will be used in the simulation via the Finite Element Method (FEM) in order to study the temperature diffusion and heat ventilation of both kinds of brakes at each temperature level. Consequently the experimental work reveals then the heat convection coefficients of both kinds are unidirectional. The heat convection coefficient of the front-vented disc brake is 4.40 % in average higher than that of the back-vented disc brake. From the simulation the front-vented disc brake can ventilate the heat better than the back-vented disc brake at 3.02 % in average. It can be summarized that the front-vented disc brake has more temperature difference than the back-vented disc brake. Hence the front-vented disc brake likely gets more stress from the temperature than the back-vented disc brake and might be damaged during the operation more than the another type. Therefore this is tendency that the back-vented is safer than the front-vented brake disc for usage.

The objective of this research was to design the maternity clothes on various occasions and to explore the satisfaction of wearing the maternity clothes among pregnant women. The methodology is begin with designing the maternity dress with five collections. For each collection has three ind of particular maternity dresses. All of them will be sent to a specialist for decide and pick up the best one of each collections. Then the best of them is going to be cut out and bring to ask the satisfaction. A sample of this Quasi Experimental Research were drawn from 200 of the pregnant women with over 3 months of gestational age in Chonburi Hospital and Somdej Sriracha Hospital. They will tend to have a shape enlargement of Breast Lumbar Wrist and Ankle swelling. The researchers used data analysis with statistic of Percentage and Mean. The study showed that the pregnant women who have 13 to 24 weeks of gestation are in the majority of samples. They have ages 26 to 30 years with low level of undergraduate education degree. Most of them are doing a personal job and have a monthly income of 15000 to 20000 THB. The reasons of purchasing maternity cloth are colorful and design with the beautiful pattern. They also provide comment and suggestion that the maternity cloth should add more styles such as Casual dress shirt and pant. So that it can be worn on various occasions.The majority of samples have Mean and the level of satisfaction of all wearing the maternity clothes at High range are second third fourth fifth and the first one has percentage of 3.76 3.69 3.65 3.59 and 3.54 respectively.

The objective of this study was to khet design by using Thai pattem created on cotton clothes using Thai Khet creation: warp yarn in thousand comb with tightly strengthened cloth while welf yam with hardness together Thai Khet on Thai cotton pattern Traditional Thai Khet waving machine to be adapted by adding front floating hardness pattern hardness wood stepping new pattern weaving plan plotting Thai pattern and making color signals on graph prior khet pattern creation which one graphs column replaces one warp yarn when khet designing have been finished then the following step is desinged plane weaving. The results of the study showed that: there is suitable continuing Thai pattern on cotton cloth: Kanook pattern follows Krajang Ta Ooy pattern and Prajamyam pattern to be combined as graceful delicacy pattern and innovation transferred into Danchang District Supanburi Province.

The main objective of the study is to design blades for chopping heart rice straw. This study is composed of three main testing parameters. The first parameter used is speeds at which the knife blades that will chop the straw. They will have 2 speeds one at 540 and the other at 720 rpm. The second parameter is the types of blades that will be used eclipse blades and smooth blades. The last parameter is the cutting edges. The eclipse and smooth types of the blades will have 4 5 and 6 cutting edges. For this test we use stubble sorted 50 heart rice straws. Placing the straw on the prepared steel and test with all three testing parameters repeating each testing parameter thrice and record the results. Based on the testing and evaluation the 6 edge eclipse blades with a speed of 720 rpm. Yielded the highes results for chopping heart rice straw at 66 percent. For the 6 edged smooth blades with a speed of 720 rpm the yield results for chopping heart rice straw was at 35.76%

This paper presents a CMOS voltage reference design which is widely used in electronic circuits both analog and digital circuits. In the conventional a CMOS voltage reference circuit design composed of several MOS transistors and complicated circuits the output voltage cannot be adjusted to any levels. Therefore in this paper proposed the CMOS voltage reference circuit design technique based on a new current combination circuit which it was reduced number of MOS transistors and the proposed circuit is able to operate without complex startup circuit. The performance of the proposed circuit is confirmed through PSPICE simulation results the circuit can be operated with supply voltage varies from 2V to 4V the output voltage reference is about 231 2mV at wide temperature range of -80 to 120 it has very low temperature coefficient of about 37.65 ppm/ and a total power dissipation of 7.37 W