The purpose of this research was to study productivity rate in concrete plastering of interior brick wall by studying 2 construction projects in Bangkok. The researcher divided the methods of labor productivity into two categories: (1) direct labor production technique and (2) field rating technique. The direct labor productivity technique of project A is about 1.38 m2/person/hr. and project B is about 1.19 m2/person/hr. by field rating technique project A had 77.75 % of workers in work status project B had 73.75% of workers in work status. The error rate was 4.08 % and 4.31 % respectively at the 95% confidence level. Project A has higher productivity rate than project B because project manager A chooses ready-mixed plaster for plastering. Project B selects cement mix (silica cement) mixed with fine sand cement mixer and water which take longer to prepare than Project A resulted cost of materials increase for 28.21 %.Meanwhile the working time for wall plastering could take longer for 13.77 %. It can be concluded that the selection of material for work is another factor affecting labor productivity

Brake pad is a one of products that plays a role in the automotive parts industry and directly affects safety. Therefore there are many designs of brake pads for product development. This research aims to study the thermal conductivity of brake pads and define the thermal conductivity that appropriate to brake pads and also solve the problem of deterioration of braking automotive parts. To achieve this the 3 different ingredient brake pads from Compact International (1994) Co. Ltd. are studied in terms of the heat transfer behavior. The experimental work was set by simulating a brake on the single dynamometer at the braking speed of 50 100 and 130 km/h. As a results the significant parameters are copper and fillers respectively. It affects the heat transfer behavior by means of applying heat from the contact area between the brake pad and the brake disc to the caliper This knowledge will be used in the design of brake pad ingredients to determine the appropriate conductivity of the brake pads.

Currently the automotive industry plays an important role on the economic growth in Thailand. As the same time the waste of automotive parts has increased as well. As a results the automotive parts made from three different natural fiber parts was studied consisting of hyacinths sugarcane and pineapple leaf fiber. By of 50 x 250 x 20 mm of mold dimension the specimens were produced under 700 W of heating stick and measured temperature by a K type of thermometer. There were 3 same proportion specimens made from: 1) sugar cane fiber: husk: latex adhesive 2) water hyacinth fiber: husk: latex adhesive 3) pineapple fiber: husk: latex adhesive in the ratio of 25:25:50 by weight which were formed under temperature between 100GC and 105°C at 5 MPa of pressure and leading to find out the bending moment ability. The test results show that the specimen made from sugar cane fiber has the highest value 5482.5 Nand 4061.11 N/mm2 of bending moment and bending stress respectively. It was more than specimen made of water hyacinth 29.84 % and pineapple fiber 65.01 %.

The objective of this research is to study the suitable production process in the production of Pad Thai sauce Crispy rice noodle sauce (Mee krob) and three mixed flavors sauce (Sam-rod) by using pineapples juice as the main ingredient. To study the quality of this finished three sauce products from pineapples. And to study the consumer test of pineapple sauce products. The results of the development of a suitable recipe for Pad Thai sauce production. From the evaluation of the sensory quality of Pad Thai sauce (9 points Hedonic scale). It was found that panelist accepted the appropriate amount of pineapple juice in the production of Pad Thai sauce at 30 % in all attributes in terms of appearance color smell taste texture and overall liking with an average score of 8.08 7.83 7.93 8.15 8.05 and 8.13 respectively which was at a high level of preference. Sensory evaluation of crispy rice noodle it was found that 75% of pineapples accepted for the source production in terms of appearance color smell taste texture and overall liking. With an average score of 7.89 7.79 7.88 8.03 7.98 and 7.93 respectively which are in the high level. Sensory evaluation of three mixed flavor sauce. It was found that panelist accepted 100 % pineapple sauce using pineapple juice in terms of appearance color aroma taste texture and overall liking. With an average score of 8.35 8.04 8.25 8.22 8.15 and 8.24 respectively which is in the high level. The results of the study of the quality of Pad Thai sauce crispy rice noodle sauce and mixed three flavors sauce that use pineapple juice as the main ingredient found that increasing the amount of pineapple juice affects the pH value of the products. All 3 types of sauce with the pH value are in the acid range. The microbial quality of all 3 types of sauces has passed the standard of community product standards set by the Ministry of Industry. The results of the consumer test on pineapple sauce products. The majority of consumers are female. Most of them are between 19-29 years old and in the age of 40-49 years. In education the majority of consumers had a bachelors degree. Regarding marital status most of the respondents are married. In a career most of them have a daily occupation and government service/state enterprise. Most of the income of the consumer is less than 20000 baht. Consumers like the characteristics of 3 types of instant pineapples sauce products at the most like to most level. And most consumers are accepting all 3 types of pineapples sauce. If available most consumers buy because of the ease of use/ reduction of the process. The price of 3 kinds of ready-made sauce products from pineapples accepted by consumers at the price of 50 baht/bottle.

The aim of this research is to design a prototype of a male dummy chest for motorcycle crash tests. The primary criteria discussed in this study are based on the unique features of Thai ergonomic body sizes with an age range of the highest fatal rate and the fundamental design of the Hybrid III 50th percentile male crash test dummy. A comprehensive experimental study of crash behavior of the prototype undergoing axial compressive loading is performed using the mutual procedure of cadaveric chest testing. For design criteria the largest chest deflection of 80 mm the maximum acceleration of 38.47g and the absorbed energy of 178.369 Joules are considered in the experiment. The obtained results show a good agreement with the experimental data of other researches in which the capability of the energy absorption depends on impact velocities. In addition the energy absorption capability of this prototype can accurately assess an injury level under AIS 3+. For this reason the first prototype of a male chest dummy is particularly suitable for an assessment of a lower serious injury level in a motorcycle crash test.