The objective of this research is to propose a new way to fabricate a composite material for future bone replacement development via growing apatite crystal on silk fibroin fiber. Apatite crystallization on silk fibroin fiber was prepared by precipitation reaction between Ca(NO3)2 solution and (NH4)2HPO4 solution adjusted pH by NH4OH solution. In this work Effect of solution concentration and initial pH values was investigated on apatite crystals. Chicken eggshells were used as calcium source by heating sufficiently powdered eggshells at 1300 °C for 4 h to acquire CaO powders made Ca(NO3)2 solution by dissolving in 65% HNO3 solution. Prepared Ca(NO3)2 solutions were adjusted concentration as 3 levels and were adjusted different pH values of 7 8 and 9 respectively. For processing of apatite crystallization silk fibroin fibers were immersed in Ca(NO3)2 solutions for 30 min. After that (NH4)2HPO4 solutions were added in silk fibroin fibers immersed in Ca(NO3)2 solutions. Reaction time was fixed about 1 min before cleaning to remove impurity precipitates on surface of silk fibroin fiber. Finally apatite crystallization on silk fibroin fibers occurred. The obtained result can conclude morphologies of apatite crystals on silk fibroin fibers was sheets sphere and flower. Solution concentrations and initial pH values directly influenced on Ca/P ratio of obtained apatite crystals by Ca/P ratio increases as increased solution concentrations or increased pH values. Finally research silk fibroin fibers were woven as two patterns of plain weave and twill weave and they were investigated Young’s modulus and tensile strength. The result indicates that Young’s modulus of silk fibroin fiber sheets woven as twill weave and as plain weave were about 616 MPa and 425 Mpa and tensile strengths of them weave were about 40 Mpa and 72 Mpa respectively. The optimum condition of growing apatite crystals on silk fibroin fibers was sample of CP19. Design of silk fibroin fiber with plain weave was an optimum pattern for future biomedical applicaions.

This research work was to study the chemical release of wood/polyvinylchloride composites (WPVC) affecting the physical and chemical properties of water. WPVC specimens in ratio of PVC and wood (100:100 by weight) were prepared by using twin screw extruder. The water conditions for specimen immersion testing were varied for temperatures of 30-70 oC and specimen immersion time of 0-120 h. The water quality was estimated by measuring pH electrical conductivity turbidity and color of water after immersion of WPVC specimen as comparing with case of PVC specimen. The result suggested that pH values of water slightly decreased with increasing specimen immersion time whereas the change of temperature of water did not affect the pH value. The electrical conductivity remained unchanged with increasing specimen immersion time or temperature except for immersion of WPVC specimens at 70 oC. This might be attributed the weak interfacial bonds between PVC and wood and this led to more easily release the metal ions from additives of PVC. The turbidity and color of water for case of WPVC increased with increasing specimen immersion time whereas those for case of PVC did not change. From the results of water quality testing it indicated that WPVC applications which contact with water are safety. This was because water quality after immersion of WPVC specimen is within the effluent standards of pollution control department.

The objectives of this research is to study and evaluate knowledge base level of RMUTP students regarding information of ASEAN Community and to study their readiness to approach into ASEAN labor markets by doing the random sampling of 386 RMUTP students all-year levels from 9 faculties who are studying bachelor degree. Tools for collecting data are questionnaires on basic knowledge of ASEAN Community and readiness of RMUTP students towards ASEAN Labor Markets by choosing one answer from multiple choices with 5 rating scales. Analyzing data by using readymade computer program SPSS for statistic percentile standard deviation t-test f-test. All test statistics is statistically significant at 0.05 level. The results can be summarized as follows.

The objectives of this research are to analysis design and develop the Information System to support activities of Nang Loeng Community Bangkok. Also to install test and evaluate the system. To develop the System Development Life Cycle (SDLC) method is used. To develop and implement PHP script language and MySQL database management system are used. And the system is installed on the Internet Server. To evaluate the satisfaction the 2 groups are the samples the first is the group of 19 operation users and the second is the groups of 30 general users. Convenience sampling is used for sampling method. Gathered and analyzed the data by statistical processing program for Windows software. The result of research show that the satisfaction of the first group (19 operation users) about input screen a data entry is in a good level (x=4.00). About working process and reporting of the system is in a good level (x=4.15) the satisfaction of the group is a good level (x=4.08) The satisfaction of the group (43 general users) the results appear in the same level to the satisfaction of the first group in every case (x=4.21). So the research results can be concluded that all samples are highly satisfied with this information system. And this system can be installed in real working and suit the user requirement.

The purpose of this study was to study and compare problems of members of community Phya Prasit towards saving in two aspects: knowledge of saving and perspective of saving. The samples were classified by gender age occupation status education and monthly income. The samples in this research were 126 members of community Phya Prasit. The study participants selected by simple random sampling. The test with 23 items and questionnaires of rating scales with 24 items were 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. Since income of the members of community were relatively low no extra revenue and debt to be paid. So guidelines for the development on savings were as follows: training to make plan for savings promote to make the household account training to make extra money training planned to spending and training to make the knowledge of investment. 2. Problems of members of community Phya Prasit towards saving: in aspect of knowledge on saving of members of community were relatively low while perspective of saving was in a great extent. 3. There were significant difference for problems of members of community Phya Prasit in aspect of knowledge of saving at the 0.05 level among members of community Phya Prasit in different gender and different age. 4. There was significant difference for problems of members of community Phya Prasit in aspect of perspective of saving at the 0.05 level among members of community Phya Prasit in different occupation.