จำนวน Repository ( 158 )

Antioxidant and  -glucosidase inhibitory activities from local vegetables in phatthalung province
Antioxidant and -glucosidase inhibitory activities from local vegetables in phatthalung province

The objective of this research was to evaluate the antioxidant and glucosidase inhibitory activities of 9 fresh and dried local vegetables extract from Kong Ra District Phatthalung Province such as Barringtonia acutangula (L.) Gaertn. Archidendron jirinaga Nielsen Scientific name: in process (Neang-rok: local name) Oroxylum indicum (L.) Kurz Ficus semicordata J.E.Smith Ficus oligodon Mig Ficus sp. Ficus obpyramidata King and Ficus fistulosa Reinw. The antioxidant activities were determined by DPPH radical scavenging. Results indicated that dried crude extract of Oroxylum indicum (L.) Kurz exhibited the highest DPPH radical scavenging activity at the final concentration of 5 mg/ml revealed the DPPH activity as 92.25%. Moreover the extracts were studied for their glucosidase inhibitory activities compare with authentic drug Acarbose Results indicated that dried crude extract of Ficus sp. exhibited the highest inhibitory activity revealed the inhibition activity as 85.46%. Thus these local vegetable might be possible new sources of glucosidase inhibition and antioxidants so there are suitable for use as functional food in the future.

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การทดสอบการอัดตัวของวัสดุผสมภายใต้สภาวะอุณหภูมิต่างๆ
การทดสอบการอัดตัวของวัสดุผสมภายใต้สภาวะอุณหภูมิต่างๆ

Brake system is used the friction between disk and pads. In the driving conditions the brake behavior from the driver is difference. Based on this reason the damage on disk and pads are occurring. Nowadays the ratio of compound materials in pads is several and involved automotive industry has not available enough to experiment. Thus it is difficult to brake pads damaged analyzing in several driving conditions. In this problem the mechanical property tester is main tool for experimental works and test procedure base on the Brake lining and disc brake pads compressibility JIS D 4413. The experiment emphasizes on the flexibility behavior and internal energy by volume with 3 types of brake lining and pads. For the experiment focused on conditions by normal apply brake repeat apply brake and suddenly apply brake. The results revealed the normal apply brake condition the maximum and minimum of flexibility behavior was appeared on brake lining and pads type A and type C with testing temperature at 200C. By the repeat and suddenly apply brake conditions the brake lining and pads type C and type A with 300C is given to the maximum and minimum flexibility behavior. In case of internal energy by volume the maximum and minimum energy was appeared on pads type C and type B at the 30C of testing temperature. For the testing temperature at 200 and 400C the pads type A and type B were got the maximum and minimum energy respectively. On the other hand at the high flexibility behavior is given to high internal energy at the high temperature of the apply brake condition.

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Factors Related to Utilization of Information and Communications Technology in Instruction of lecturers in the Rajamangala University of Technology Phra Nakhon
Factors Related to Utilization of Information and Communications Technology in Instruction of lecturers in the Rajamangala University of Technology Phra Nakhon

The objectives of this research are to study 1) the acceptance level of information and communication technology (ICT) characters environment supporting ICT use lecturers attitude in ICT use and ICT use in teaching 2) the relation between ICT use in teaching and lecturers characteristics and 3) the relation between ICT use in teaching of lecturers and acceptance in characteristic of ICT environment which support ICT use and lecturers attitude in ICT use in teaching. Both quantitative and qualitative approaches are applied by using questionnaire and in-depth interview for data collection. The research sample is 220 lecturers from 9 faculties of Rajamangala University of Technology Phra Nakhon. Descriptive and inference statistics are used; percentage arithmetic mean standard deviation Pearson correlation and mUltiple regression analysis with Enter technique. The findings are; 1.The high acceptance level in characteristics of ICT and lecturers attitude in ICT use in teaching aspects (x = 3.99 3.64) low score for environment supporting ICT use (x ::::: 2.46) and medium score of ICT use in teaching of lecturers (x ::::: 3.27). 2.Lecturers ICT use in teaching is related to 3 lecturers characteristics. It is positively related to computer ownership and the faculty affiliated and negatively related to experience in teaching. 3.Lecturers ICT use in teaching are related to acceptance in characteristics of ICT environment which support ICT use and lecturers attitude in ICT use in teaching. 4.Recommendations to Rajamangala University of Technology Phra Nakhon in improving and development of ICT use are; (-3) 4.1 open ended questionnaire; 1) prepare sufficient leT equipments for lecturers 2) setting computers and projectors in every classroom and 3) training ICT uses application in teaching for lecturers. 4.2 in-depth interview; 1) environment supporting aspect; increase sufficient computers equipments computer networks and improve their efficiency and increase budget for ICT 2) characteristic perceiving and attitude to ICT use aspect; increase knowledge in literature copy right act to lecturers and 3) leT use in teaching aspect; training lecturers to get more knowledge and skill in ICT use electronic media producing and information searching from websites by internet.

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