Increasing concentrations of CO2 in the atmosphere is causing severe environmental destruction to the earth. Bio-sequestration of CO2 is a promising way to completely sequester CO2 by converting it into biomass by way of photosynthesis. The current research focused on biomass productivity and CO2 sequestration efficiency using microalgae. The experiment choose Spirulina sp. RMUTL by cultivating in working volume 8 liters bioreactor with zarrouks medium for 24-hrs with light nature and aeration air. The CO2 (100%) was flushed into the medium with a flow rate were 0.01 0.02 and 0.03 vvm respectively. The period of all experiments were 30 days. The results showed that the maximum specific growth rate OD560 algae biomass productivity efficiency of CO2 reduction CO2 fixation rate and carbon loading rate were 0.35±0.01 d-1 0.85±0.00 600.00±10.00 mg.L-1 96.83±0.76% 1 128.00±18.80 mg.L-1.d-1 and 2 0 . 4 1 ±0 . 2 6 g. d-1 with 0.01 vvm CO2 flow rate. The average CO2 sequestration over 30 days were 3.15.±0.03 3.11.±0.02 and 3.07.±0.07% in 0.01 0.02 and 0.03 vvm CO2 flow rate respectively.

The objective of this research is to construct a phased array device to be able to inspect all sizes of welded pipes and to study materials suitable for creating a phased array. The results obtained from testing both materials are PLA plastics carbon fiber. In order to obtain the force exerted on the material and the intensity of the force exerted on the same material it is found that the strength of the comparison between the two materials is different from the PLA plastic test. Of carbon fibers will be strong and lighter than plastic. Result from the test for Elastic In the impact and strength tests of both materials it can be used to examine pipes with a circumference of 50 centimeters to 100 centimeters and to use a 34 mm. length phased array probe with a width of 24.6 mm. 36 degrees angle and then adjust the strap as needed to reduce the steps during the use of inspection equipment.

The objectives of this study wree to: 1) study the administration of student support system of elementary schools under Bangkok elementary education service area office according to the opinion of administrators and consulting teachers and 2) compare the opinions of administrators and consulting teachers about the student support system classified by gender age education level and work experience. The sample was composed of administrators and consulting teachers total 287 people. The research instrument was a questionnaire with reliability of .95. The statistics for data analyses were percentage mean standard deviation. The mean different was tested by t-test and ANOVA. The research revealed that : 1) The opinions to the administrators and consulting teachers as a whole found at moderate level and 2) the comparisons of the opinion of administrators and consulting teachers classified by gender t-test found different genders differently at .05 level of significance. For age education level and work experience used ANOVA found the different ages opined differently at .05 different education opined differently at .05 level of significance and different work experience opined indifferently on two aspects student development promotion and student transferring were not different. The other aspects were different at .05 level of significance.

The purposes of this research were: 1) to study the effectiveness of customer relationship management influence the customer trust on service quality on private vehicle inspection service in Phra Nakorn Si Ayutthaya 2) to study the customer loyalty influence the customer trust on service quality on private vehicle inspection service in Phra Nakorn Si Ayutthaya. 3) to study the effectiveness of customer relationship management influence the customer loyalty on private vehicle inspection service in Phra Nakorn Si Ayutthaya. The samples in this study were 325 Banpan private vehicle inspection service’s customers in Sena district Phra Nakorn Si Ayutthaya province. The data were analyzed by using frequency percentage mean standard deviation and Multiple Regression Analysis. The results found that the opinion levels on effectiveness of customer relationship management in overall and each aspect was found that the customer engagement customer hearing customer suggestion customer retention and customer prospecting were at the high level. The opinions level toward the customer trust on service quality was found at highest level in overall. The opinions level toward the customer loyalty was found at high level in overall. The result of hypothesis test found that the effectiveness of customer relationship management in customer suggestion customer retention and customer prospecting were influenced the customer trust on service quality. However the customer engagement and customer hearing were not influenced the customer trust on service quality. The customer trust on service quality were influenced the customer loyalty. The effectiveness of customer relationship management in customer engagement customer suggestion customer retention and customer prospecting were influenced the customer loyalty however the customer hearing were not influenced the customer loyalty.

Nowadays one of the automotive engineering is conductivity of brake pads playing a role in friction coefficient which means safety of customer. Thus thermal properties have been improved using composited materials. This project aims to study the heat capacity behavior of 3 different brake pads which are supported by the company Compact International (1994) Ltd. For experimental works temperature based on brake condition was simulated from 05 to 003°C at 5 MPa of pressure. By standard JIS D4413 testing condition of pressure was referred. The heat capacity values of brake pads are calculated under the temperature conditions. As a result of testing brake pad made of copper or high metal powders result in relatively low heat capacity. On the other hand brake pads containing fiber and a large amount of fillers result in an increased heat capacity and stability in various temperature conditions. The heat capacity varied according to the operating temperature. In addition the lubricant contained in the brake pads affects the higher heat capacity and stability at various temperatures.