The objectives of this research are to design the load cell tolerance testing machine and demonstrate the tolerance of load cell with a tolerance test that has a beam length of 90 cm. It can create the compressed force at the load cell more than 1 kN The experiment cam be divided into 2 stages; 1.) verification of load range and 2.) linearity test. Both stages are tested at a temperature at 25°C using 10 to 30 kg of mass in the lowest compressed force condition of 0.091 kN and the maximum compressed force condition of 1.12kN As a result the linearity performance of the tolerance of the load cell test kit between calculated force and displayed value force are different 0.354 percentage only while the standard deviation of displayed value force and voltage signal output are 0.0013 and 0.0022 respectively. It reveals that the experimental result is reliable because of less than 1. In addition the tolerance of the load cell tolerance testing machine is 0.00300 (0.3 percent) which was calculated from the comparison of the tolerance specification of two main equipment that specified by manufacturer.

The purposes of this research were to : 1) knowledge 2) attitude 3) vegetables and fruits consumption Behavior 4) the relationship between knowledge and consumption of vegetables and fruits Behavior and 5) the relationship between the attitude of junior high school students Srinakharinwirot University Demonstration School (secondary). The samples junior high school students School University Srinakharinwirot (secondary education) were studying into 2nd semester 2017 academic year 268 people used the questionnaire. The statistics used for data analysis were frequency percentage mean standard deviation and the Chi-Square. The results showed that to : 1) most students have no knowledge of the consumption of fruits and vegetables at a good level 2) attitude to the consumption of vegetables and fruits of students were moderating 3) most students have been a habit of consuming vegetables and stir occasionally the consumption of leave stems the fresh fruit consumption was often an apple banana orange grape mango guava strawberry and pineapple were the reason. Consumption of vegetables was delicious and fruit consumption because was delicious the food choices breakfast of steamed boiled and poached. Lunch fried food and dinner choices eat steamed boiled and poached. For snacks breakfast and afternoon snacks were eating oranges and grapes .The consumption of vegetables in one day less than 4 ladles and fruit consumption in one day less than 3 parts 4) the relationship between knowledge consumption of vegetables and fruit to the consumption of vegetables and fruits found that the relationship between the frequency of consumption of processed foods such as vegetables pickled dried and the frequency of consumption of fruit compote. The frequency of consumption of fruits and stir. There was no relationship between and 5) the relationship between attitudes in the consumption of vegetables and fruits with the consumption of vegetables and fruits found that the relationship between the frequency of consumption of fresh vegetables fruit pickle consumption frequency. The reason for vegetables and for the consumption of fruit and what kind of fruit consumption. Statistically significant was at the .05 level. There were no relationship.

This project aims to create a series of demonstration power plant water. And the operation of the circuit Inverter split by the end of demonstration runs as follows. Theory and documents relating to the source of electrical power water power the working principle of the circuit. Inverter the principle of integrated battery charger main circuit voltage VDC LED LED SMD (Surface-Mounted-Device) a voltmeter. Ammeters digital LCD display couples. Make plans to offer advisors the project approved. Design demonstration kit Equipment supply and assembly Assembly and demonstration the production of electricity from hydropower 220 VAC test run is a series of demonstrations to generate electricity from water power to 220 VAC storage performance voltage and current output. And analyze the results of the operation of the demonstration production of electricity from hydropower 220 VAC and conclusions in this chapter are the results of the experiment demonstrated the production of electricity from hydropower and the conclusion of the trial in order to be used. effectiveness of the objectives of the experimental procedure the results can not load a load test. Test kits demonstration power plant and the demonstration set to produce 220 volts for 25 minutes at a constant voltage. The electricity does not increase or decrease. Always works The term of office is fixed or reduced by the ratio of active power increases.

The purposes of this research were : 1) to study the personal factors in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University 2) to education study in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University and 3) to individual factors affecting in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University. The population students are studying in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University of 267. The instruments used in research questionnaires and interviews. The statistics used for data analysis were frequency percentage mean standard deviation t-test and One Way ANOVA. The research found that as follows: 1) Most students were male 14 years of age by studying in lower secondary students’3/7 they have a cumulated GPA of 3:01 to 3:50 by living with his father - his mother and the aptitude of most business plans. 2) The factor in choosing in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University overall students in grade 3 with comments in agree. The first two items in order from most to least found that the side with the highest mean score the reputation of the school. The second was the instructor and minimum course content. And 3) individual factors were affecting in lower secondary students’ decisions to study in the career Department at the Demonstration School of Ramkhamhaeng University found that students with gender age year of study. The GPA and the Professional and the aptitude different affect students were learning plans and career groups school not different. Except for students with different shelters affect student learning plans and the career Department at the Demonstration School of Ramkhamhaeng University difference was statistically significant at the .05 level.

The purposes of this research were : 1) to study of factors personal the Demonstration School of Ramkhamhaeng University 2) to study food buying through online applications 3) to study factors of marketing mix towards buying food through online applications 4) To study the relationship between personal factors to buy food through online applications of the Demonstration School of Ramkhamhaeng University and 5) to comparison of opinion toward marketing mix towards buying food through online applications by personal factors. The samples students are studying in high school of the Demonstration School of Ramkhamhaeng University and never buy food through the applications online of 226. The instruments used in research questionnaires and interviews. The statistics used for data analysis were frequency percentage mean standard deviation Chi-square values and One Way ANOVA. The results showed that: 1) Most students were male 18 years of age by studying high school grade 6 and receive money from their parents for about 201-300 baht per day. 2) Most students purchased food Skootar by a full set this was why they had ordered food restaurants and a variety of food items in order was to feeding each paid 200 baht the students were ordering food when a new food product the purchase of food for every taste while students can be taken food delivered within 31-60 minutes and the most important in the fresh new foods. 3) Analysis of the data on the opinion toward was marketing mix towards buying food through online applications of the Demonstration School of Ramkhamhaeng University found that overall; students have commented on the high level the first two items in order from most to least found the side with the highest mean score was the distribution the second was the price and the minimum personnel. 4) Relationships between personal factors as gender age education and the money received from parents to buy food through online applications of the Demonstration School of Ramkhamhaeng University found that was relationship the statistical significance level. 05. 5) Comparison of opinion toward marketing mix towards were buying food through an online application by personal factors were found Gender age education The money received from parents of different. Levels opinion toward marketing mix used to purchase food through an online application not different the statistical significance level. 05.