This study was aimed to investigate experimental study of the parameters affecting the amount of tubular ice. Significant studied parameters were inlet water temperature. Thickness tendency was increasingly according to time. The thickness of the tubular ice varies with the square root of time according to the theory. At the beginning of the process thickness increased quite fast and decelerated at the end of the production process. The inlet water temperature affected to thickness of tubular ice as the ratio of inlet water temperature to thickness was 0.41 degrees Celsius per millimeter. Thus inlet water temperature affected to thickness of tubular ice according to theoretically results with 342% 43% and 8% error value between ice thickness and production time for 0-10 minutes 11-20 minutes and 21-36 minutes respectively

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

This research aimed to study and analyse conditions and problems in designing and developing household and decorative products of One Tambon One Product (OTOP) small and medium enterprises (SMEs) in Pathumthani province. The informants were 4 OTOP entrepreneurs and 205 OTOP SMEs. The research was conducted by means of interviews observations and questionnaires. The data was statistically analysed using frequency percentages mean and standard deviation. The results showed that conditions and problems in designing and developing household and decorative OTOP products ranged from home-based production site a lack of knowledge in product design and development transportation creativity artistic relations product specifications marketing to product design and development laws. Four entrepreneurs from these groups of products: lotus-fiber flowers silk flowers and bamboo lamps were found to have the problem of dyeing materials whilst those from the group of Thai/Japanese clay flowers had the problem of clay. The researcher had analysed piloted and concluded the problems and then passed on product development techniques to the entrepreneurs. It was found that they could use the given knowledge to make beautiful products and they satisfied with the reducing cost of production.

This paper presents a design of the control system to control AC/DC converter. Algorithm of a control system design consists of the output voltage loop control used a fuzzy gain scheduling of PI control and the current loop control used a hysteresis control which is described in this paper. The evaluation of the proposed control system is used to control an isolated CUK AC/DC converter operation with a 250W load and a -48V output voltage. The system is achieved as the following; the tight output voltage both the steady state operation and the transient response a power factor is nearly unity and the waveform of input current is nearly sinusoidal. In addition the control system design is simple and uncomplicated

The objective of this research was to study the factors affecting stress of elderly in Ban-Klong district amphur Muang Phitsanulok province. The 300 elderly in specific area was sampled by stratified sampling and questionnaire was used as a tool in this research. The result indicated the causes of stress could be classified into five factors. The first factor was personal problem such as aging health and injury and timeless. The financial status eg. higher living expense insufficient salary and lower allowance was ranked as the second factor. The third was family status for example death of spouse tribulation and family controversy. The social state – leadership – and environmental problem such as disaster was ranked as the fourth and the fifth respectively. However the stresses were relieved by watching TV seeing movies doing favourable hobbies making merit relaxing doing meditation and praying. Finally effectively management of stress resulted in better mental health and living with wellness.