The objective of this research is to investigate microstructure and mechanical properties of brass welded by diffusion welding process. The diffusion welding (DW) of brass welded over lap joints bonding parameters were pressure at temperature 500 650 and 800 0C contact pressure of 12 MPa and holding time for 60 minutes respectively. The microstructure mechanical properties and behaviour during bonding were investigated. The results show that in weld zone (Bond Line) diffusion of atom the brass significantly. The mechanical properties after diffusion welding process increased higher temperature

In this paper the printed loop antenna is proposed for high frequency radio frequency identification (HF-RFID) systems (13.56 MHz). The proposed antenna is designed on the printed circuit board (PCB). The antenna structure consists of printed semi-spiral loop with rectangular structure patch at the middle of loop. It can provide the magnetic field distribution to cover the operating area with various directions that can improve the communication performance between reader and various tag orientations. From the measured results the proposed antenna has more efficient than the printed spiral loop antenna

Thesis this has the objective for design build and test ability in the work of set propeller wind generator by divide recording is 3 period in morning noon and evening each phase 1 hour record speed wind value capacity air value and electrical resistance every 10 minute. Of the periment form wind nature source and model with electric fan. The result stud makes to know that propeller at have property that is appropriate area stet experimental at wind speed 2 – 2.5 m/s is propeller make from pipe PVC by propeller has length 1.30 m. the area in front cut a propeller 0.16 m. through a propeller the corner twists in installation propeller

The purpose of the research was to study the exciting permanent-magnetic-field affecting to the Bean Sprout growing. The comparison of control-group (or unexcited seed) of the Chainat-72 seed and exposure-group seed where is the excited by the 1.6-Tesla permanent-magnetic-field of 15 30 45 and 60 min has been done. The exciting permanent-magnetic-field affecting to the Bean Sprout growing is analyzed by statistical analysis. The findings revealed that: by excited seed the maximum grow-up rate or average weight of Bean Sprouts was 24.82 %.

The objective of this research was to investigate the factors that effect the study result of 467 Rajamongala university of Technology Pranakhon students who studied the Principles of Accoutning subject in the academic year 2013. The questionnaires were used for data collection and the multiple regression was used for data analysis in order to find the factors that effected the study result. The study found that with the total study score of 100 the maximum score was 85.76 the minimum score was 42.58 the average score was 65.812 and the standard deviation was 15.73. The results of hypothesis test were as follows: The factors that were related to the study results (Y) were student attitude ( x ) student responsibility ( x ) teaching method ( x ) and out of class activity ( xo ) with the correlation coefficients of 0.853 0.801 0.874 afi0.791 respectively. The most effective factor was student responsibility with the regression coefficient of -18.231 the second and the third most effective factors were student attitude teaching method and out of class activity with the regression coefficients of 14.4269.133 and -4.062 respectively. The multiple regression *u f = -9 .228 + 27 .319x + 9 .ll6x + 2.499x .