จำนวน Repository ( 90 )
The study and development of building construction material : wall construction material from para rubber and rice straw to reduce the internal e
This research is a studying and developing building constructing material that is reducing the usage of energy in a building and it is made from rubber and rice straw. This research aims to both improve the economic and raise the energy conservation idea. This research will find the proper building material that is heat resistance. From interviewing the expert the researcher came up with the best formula to produce this heat resistance board. The formula is to add water to the rubber (one part rubber and three parts water) and spay it on a flatted bed of rice straw. Then heat it for one hour in a temperature of one hundred degree Celsius. After that mix in borax to make this material heat and fire resistance. All theses testing; the heat resisting and water absorbing this material has past the standard to be used in an indoor building constructing (มยผ. 8101-51) Department of Public works and town planning Ministry of Interior 2008. From that point on the researchers designed a pattern on the material to add the look for home and building decorating. Therefore they are two sizes of the material; 0.60 x 0.60 x 0.10 meter and 0.60 x 1.20 x 0.10 meter.
การศึกษาการใช้พลังงานในเครื่องอัดไฮดรอลิก
Recently Hydraulic Press has been generally used as a labor-saving device in several functions through industrial section. Previously most of the factory merely concern about using this powerful device and that caused so much electric energy wasted during the pending process on equipment transformation. Therefore our team initiated a conceptual study of energy consumption on using hydraulic press. The invention of hydraulic press for the study of electric energy requires hydraulic devices installation. This includes 3.7 kW 3 phases system induction motor and VSD hydraulic pump single shaft 2 sets set 1 low flow high pressure at flow rate 3.65 liters per minute and set 2 high flow low pressure at flow rate 6.79 liters per minute and total flow rate 10.44 liters per minute pressure relief valve and 2 ports 2 positions Bypass control valve and 4 ports 3 positions directional control valve double acting cylinder 100 mm diameter and 250 mm stroke and pressure gauge. The experiment on energy consumption using hydraulic press has been considered in 5 cases. Each case operated by different hydraulic devices in order to observe the differences of energy consumption. The result of experiment showed that case 1 had electric energy lost the most the rate of loss will increase as a percentage of the increase in pending. Case 2 to 4 with the lost of electric energy are similar. Case 5 is bringing the case 4 added VSD to adjust the speed of the electric motor is reduced to 435 rpm during the waiting period so this case had the lost of energy is minimal. After comparative experiment between case 1 and the other 4 cases during the pending process on equipment transformation at 20% - 200% it revealed that case 2 reduced electric energy wasted more than case 1 accounted for 17.07% - 30.46% while case 3 to 5 reduced electric energy wasted more than case 1 accounted for 16.06% - 29.52% 17.37% - 30.80% and 23.90% - 50.55% respectively
การศึกษาปัจจัยที่มีผลต่อการเปิดร้านเบเกอรี่ บริเวณมหาวิทยาลัยมหิดล อำเภอพุทธมณฑล จังหวัดนครปฐม
towards the bakery and the decisive factors affecting the selection of its products around the area of Mahidol University Phutthamonthon District Nakhon Pathom Province. The sample are 400 people and the research instrument was the rating-scale questionnaire administered to investigate the expectation factors and consumer demand towards the bakery and the decisive factors affecting the selection of its products. The statistical devices used to analyze all of the data from the questionnaire were the percentage mean and standard deviation. The results from the expectation factors and consumer demand towards the bakery showed thatthe sample like to have the bakery decorated in a vintage style. The customer service include having some relaxing and eating areas and takeaway. The bakery hours are 09.00 am – 09.00 pm. and it should close on Wednesdays. The price of the products are between 101 - 200 baht. Furthermore tea coffee chocolate cocoa fresh milk should be included in the bakery. From the decisive factors affecting the purchase of the bakery products it revealed that the sample prefers eating or buying cake most. Theconsuming frequency is once a week and the products are bought for only the consumption during 3 pm. – 6 pm. About the product the quality of the bakery must be fresh. The price is fair for the value of the product. The location of the bakery should be accessible and in the community. About the service the waiters or waitresses must greet and welcome customers politely and happily. Moreover the sale promotion is having the members get a discount
The Study of good citizenship characteristics of undergraduate of Rajamangala University of Technology Phra Nakhon
The purpose of this study was to study and compare good citizenship characteristics of undergraduate of Rajamangala University of Technology Phra Nakhon in 4 aspects: ethics social economy and politics. The undergraduates were classified by gender academic years faculties and achievement. The samples in this research were 389 undergraduates. The study participates selected by stratified random sampling and simple random sampling. The 60 item questionnaires of rating scales was used as the research instrument. Percentage mean standard deviation t - test for independent sample F – test and Scheffe’s test analysis were statistical method to analyze data. The results were as follows: 1. Good citizenship characteristics of undergraduates all aspects were in relatively high levels that ethics was the highest politics was in the lowest rank. 2. There was significant difference for good citizenship characteristics of undergraduates at the 0.05 level among undergraduates in different gender different academic years different faculties and different achievement.
The study of correlation between electromyography and Back-Pain Levels
The study aimed to investigate and compare the back-pain level peak-to-peak voltage and period time of Electromyography (EMG). The sample of this study was 31 patients of Yasothon Hospital. The instrument consisted of an electrocardiography (EKG monitor). For statistical analysis t-test and f-test were employed. The findings revealed that mean is The Back-Pain level of most patients was 2 (35.5 %). The peak-to-peak voltage of Back-Pain levels (1-5) were 0.11 0.12 0.21 0.25 and 0.20 mV. While period time of Back-Pain levels (1-5) were 0.85 0.86 0.86 0.62 and 0.68 s. respectively. The peak-to-peak voltage of Back-Pain levels (1 and 2) were different levels (3 and 4) at .05 level of significant. In addition the period time of Back-Pain level (4) was different levels (1 2 and 3) at .05 level of significant