จำนวน Repository ( 1174 )

นวัตกรรมคอนกรีตต้นทุนต่ำไหลเข้าแบบง่ายโดยการใช้เถ้าทิ่้ง
นวัตกรรมคอนกรีตต้นทุนต่ำไหลเข้าแบบง่ายโดยการใช้เถ้าทิ่้ง

This research presents a study of the compressive strength porosity chloride penetration resistance to carbonation and corrosion of self-compacting concrete containing fly ash ground rice husk-bark ash and ground bottom ash. Portland cement (CT) is partially replaced with pozzolans 0-40% by weight of the cementitious materials. Fly ash ground rice husk-bark ash and ground bottom ash have a high potential to be used as a good cementitious material. The results show that the compressive strength and low porosity of self-compacting concrete improves substantially with partial replacement of Portland cement with fly ash. Self-compacting concrete mix cement containing 20-40% of pozzolans can be used to make cementitious materials. The use of fly ash ground rice husk-bark ash and ground bottom ash produces concrete mix with good strength and resistance to chloride and corrosion.

2557
การทดสอบการอัดตัวของวัสดุผสมภายใต้สภาวะอุณหภูมิต่างๆ
การทดสอบการอัดตัวของวัสดุผสมภายใต้สภาวะอุณหภูมิต่างๆ

Brake system is used the friction between disk and pads. In the driving conditions the brake behavior from the driver is difference. Based on this reason the damage on disk and pads are occurring. Nowadays the ratio of compound materials in pads is several and involved automotive industry has not available enough to experiment. Thus it is difficult to brake pads damaged analyzing in several driving conditions. In this problem the mechanical property tester is main tool for experimental works and test procedure base on the Brake lining and disc brake pads compressibility JIS D 4413. The experiment emphasizes on the flexibility behavior and internal energy by volume with 3 types of brake lining and pads. For the experiment focused on conditions by normal apply brake repeat apply brake and suddenly apply brake. The results revealed the normal apply brake condition the maximum and minimum of flexibility behavior was appeared on brake lining and pads type A and type C with testing temperature at 200C. By the repeat and suddenly apply brake conditions the brake lining and pads type C and type A with 300C is given to the maximum and minimum flexibility behavior. In case of internal energy by volume the maximum and minimum energy was appeared on pads type C and type B at the 30C of testing temperature. For the testing temperature at 200 and 400C the pads type A and type B were got the maximum and minimum energy respectively. On the other hand at the high flexibility behavior is given to high internal energy at the high temperature of the apply brake condition.

2557
ตัวแบบการพยากรณ์ความต้องการเหล็กภายใต้ความไม่แน่นอนโดยวิธีเบย์
ตัวแบบการพยากรณ์ความต้องการเหล็กภายใต้ความไม่แน่นอนโดยวิธีเบย์

The objective of this research is to propose a forecasting model for uncertain demand index data of steel. The forecasting model proposed by Yelland (2010) was modified by adjusting the prior distributions of some parameters in the model in order that it is suitable for the demand of steel in Thailand. The algorithms for model fitting were written in OpenBUGS. The proposed model was compared to a classical exponential smoothing model. The research found that the forecast errors from the proposed forecasting model were minimum.

2557
การพัฒนารายวิชา ง 33102 งานอาชีพสู่อาเซียน สำหรับนักเรียนชั้นมัธยมศึกษาปีที่6 โรงเรียนโสภณศิริราษฏร์ จังหวัดราชบุรี
การพัฒนารายวิชา ง 33102 งานอาชีพสู่อาเซียน สำหรับนักเรียนชั้นมัธยมศึกษาปีที่6 โรงเรียนโสภณศิริราษฏร์ จังหวัดราชบุรี

This research aimed to develop and study efficiency and effectiveness index of Vocational Course to ASEAN as well as to study level of satisfaction and work process skills of students who study V 33102 Vocational Course to ASEAN. The samples in this research were 65 Twelfth Grade students who enrolled in second semester of academic year 2012 at Soponsirirat School under the Secondary Education Service Area office 8 Ratchaburi province. The samples were selected by Purposive Sampling from two classes of Twelfth Grade students. Research tools consisted of curriculum lesson plans achievement test students’ satisfaction survey questionnaire and evaluation form of students’ work process skills. Data were statistically analyzed for Percentage Means and Standard Deviation. Results revealed that Curriculum and lesson plans of Vocational Course to ASEAN for Twelfth Grade students had higher efficiency than the standard of 80/80 (85.75/87.30). Effectiveness index was also higher than the standard of 0.50 (0.80). Students’ satisfaction in instruction was in the highest level and students’ working skills were also at very good level. This means that the course is suitable and could be adopted to prepare students for ASEAN Economic Community in every school under the Secondary Educational Service Area Office.

2557
การพัฒนาโครงสร้างผ้าของเครื่องแต่งกายเชฟที่เหมาะสมกับการปฏิบัติงานของเชฟในครัวอาหารไทย
การพัฒนาโครงสร้างผ้าของเครื่องแต่งกายเชฟที่เหมาะสมกับการปฏิบัติงานของเชฟในครัวอาหารไทย

The purpose of this research were 1) Development and production of the cotton fabric suitable for use in the kitchen apparel chef Thailand 2) test the suitability of the fabric from the fabric used to make kitchen apparel chef in Thailand. Tools used in the study are the fabrics used to make clothing chef woven pattern 2/1 for 3 structures 1) Cotton100 2) Polyester Microfiber and 3) TR. Being three fabrics to test of the fabric aspects of the durability of color to light color fastness to washing colorfastness to perspiration strength of the yarn yarn number weight yarn yarn twist yarn thickness weaving and resistance to abrasion properties of the fabric the effect of moisture. The quantitative data were analyzed by descriptive statistics from assessment and feedback of chef’s uniforms by the establishment of a laboratory in the kitchen by cooking in Thailand 15 Thailand kitchen. The chefs were wearing 3 sets each 5 days per a types of them for 15 days. Each of chef’s uniform made from the different types of fabrics. Data analysis and interpretation with the average 5 level content analysis and evaluation. Data analysis in descriptive and narrative. The results founded that Chef of food establishments restaurants Hotel and restaurant with 15 people most of the food is the leader in working kitchen (Executive chef) the timetable of working in the evening in the Thai-kitchen from 12:00 to 21:00 o’clock for 5 days a week. It’s about environments of Thai-Kitchen The temperature of the kitchen operations in restaurants and room temperature and after the experimental wear three types of 15 day Chef has been satisfied in sample number 2. It is Micro Fiber fabrics because there is good ventilation not get heat easy to clean fabric good reflect of oil or anti-oil water absorption and drying rate of the normal range. Micro Fiber fabric when Chef wear it not heavy able to wear at all times. The results of the test and analysis Micro Fiber Cloth material that is resistant to very light. The fabric is not easily broken. Strength and abrasion resistance as possible. It is oil on fabric and yarn on the oil splash in the Kitchen. Including the ability to absorb water and the distribution of water as much as possible.

2557