This research was to apply graphical method as the input data combined with using database for developing reinforced concrete slab analysis and design. Visual Basic language was used for creating the GUI (graphic user interface) and coding and database file was used for storing data. The position of beam column and slab can define by drawing on GUI and this program will automatic translate to be the distances for using as data in process of analysis and slab design. Results from analysis and design were compared with manual calculation that they are a litter bit error because of rounding error. Moreover they can be more economically and more conveniently than results from VisStructure 4

Electronic load is an importance part of power supplies testing system. For non-electronic load type it is required to replace a resister with a new one leading to complicated working procedure. The modern power electronic technology is employ to solve this problem. The electronic load can vary the value following user command. Imported electronic load is costly leading Thailand to have a balance of trade deficit. This article proposes design and implement of an economical cost 30V 1 k DC-Electronic Load controlled by Microcontroller. The tested results can confirm the validity of this proposed electronic load

This research is about analyzing the design of floating houses including area function structure and construction materials. Floating houses design are energy saving and security. The materials must be strong and durable. Moreover the materials must be resistant to moisture because floating houses are situated over the water which causes the high levels of moisture and rust. And the risk of corrosion. The researcher recognizes that this is important. research concludes as the followings :- 1. From the designs of floating house the shape of floating house is a triangular. The structure has 3 main parts connected as space frame making the structure to be very strong. 2. The function of used area inside the floating house has been considered about ventilation in the most effective way. There are an opened windows and doors for good air flow. 3. Regarding to the use of construction materials there are comparisons between 3 types of materials in order to choose the best type which is very durable for this floating house. 4. Structure Using steel structure that enhances strength durable easy to use and demolition.

This paper presents a mathematical modelling for design the control system of a liquid. The system are consists of one and two tanks of a liquid. To confirm the achieved mathematical modelling is used to design P PI PD and PID controller in the frequency domain. The experimental results are indicated as the following. An one tank of a liquid controlling The controller can be control the liquid level to set point with in 100s. In the case of a disturbance occurs in the system it is perform by drain a liquid. As same as the controller it can be control the liquid level into the steady state. In the part of the liquid control this is the interaction between two tanks. The experimental results of the system operation the controller can be control the liquid into the set point both occur disturbance and without disturbance respectively

The purposes of this research were 1) to study problems and needs of designing packages for mixing mangosteen extract soap for the Faculty of Science and Technology Rajamangala University of Technology Thanyaburi 2) to design and develop packages for mixing mangosteen extract soap and 3) to assess the satisfactions towards the packages from manufacturers consumers and packaging experts. The samples consisted of 235 people. A structured interview and questionnaire were used to collect the data which was then analyzed using percentile values means and standard division. The result showed that since there had not been packages for this mixing mangosteen extract soap to be sold in the market four patterns of packages were designed and construced for three products. The three products were 1) 80 grams of mixing mangosteen extract soap 2) 100 ml. of facial cream mixed with mangosteen extract and 3) 400 ml. of mixing mangosteen extract liquid soap. The second pattern was rated a high level of satisfaction by the target group.