This study was to analyze the philological character of Qingwujing(靑烏經). Qingwujing is the oldest and representative documents of FengShui, especially famous for FengShui XingQi(形氣) theories. In spite of its fame, a systematic research for Qingwujing was not yet fulfilled up to now in Korea. It is the main reason why have to research the philological character of Qingwujing. The results from this research were described as following. Qingwuzi(靑烏子), as known of Qingwujing's writer is very famous already in Han(漢) dynasty for his accurate FengShui methods. His FengShui theories getting more powerful from WeiChen(魏晉) to Tang(唐) dynasty. In Tang(唐) dynasty his FengShui theoies widely disseminated and hold a great position in Chinese FengShui. Cause of cultural interchange between Korea and China, Qingwuzi had a big amount of influence on Korean FengShui. Qingwujing(靑烏經) was basically formed in Han(漢) dynasty and obtained a great fame from WeiChen(魏晉) to Tang(唐) dynasty. In Tang(唐) dynasty Qingwujing was abolished by government rulers, but it recovered and retouched by some scholars from Tang(唐) and Song(宋) dynasty. In the process, the block book of Qingwujing were changed for four or five kinds. Qingwujing's block books of Ming(明) dynasty are Yimenguangdu(夷門廣牘), Jindaimishu(津逮秘書), Xiaoshisanjing(小十三經), Jujiabibei(居家必備), and Shuofu(說郛). It's block books of Qing(淸) dynasty are Gujintushujicheng(古今圖書集成), Sikuquanshu(四庫全書), Xuejintaoyuan(學津討原), and Ershierziquanji(二十二子全集). It's block book of Choson(朝鮮) dynasty is KyujangKak(奎章閣). Among them distinctive characters been founded, but the basic contents and theories are almost same. In Korea, Qingwuzi's FengShui theories were confirmed in Silla(新羅) dynasty, and it recoreded in Soongboksa inscription written by Choi-CheeWon. Qingwu(靑烏) or Qingwuzi were known for a great FengShui master or a FengShui standing theories in Koryeo(高麗) and Choson dynasty among royal families and the aristocratic classes. And Qingwujing was a representative FengShui theory book in wh0.1ole period of Choson dynasty. Now for understanding traditional FengShui theories, we have to understand the main FengShui theories in Choson dynasty at first. For understanding Choson FengShui, the study on philological character of Qingwujing is the basic works. If those works fulfilled successfully, we can understand FengShui theories and FengShu itself more correctly.

Austenitic oxide-dispersion-strengthened (ODS) stainless steel was fabricated using a wet mixing process without a mechanical milling in order to reduce contaminations of impurities during their fabrication process. Solution of yttrium nitrate was dried after a wet mixing with 316L stainless steel powder. Carbon and oxygen contents were effectively reduced by this wet processing. Microstructural analysis showed that coarse yttrium silicates of about 150 nm were formed in austenitic ODS steels with a silicon content of about 0.8 wt%. Wet-processed austenitic ODS steel without silicon showed higher yield strength by the presence of finer oxide of about 20 nm.

This paper investigates tensile characteristics of the stress aging heat-treated SM45C steel which are aging temperature at 250℃, 300℃, aging time at 1, 3 hours, and applied load at 300, 400N conditions by using acoustic emission. Most suitable aging condition was aging temperature 300℃, aging time 1 hour, and aging applied load 300N. And increased yield load 28.3% than non-treatment specimen in this condition. AE energy in elastic limit increased about 16.7 times than non-treatment specimen. When aging time is 3 hours, yield load decreased than other conditions that possibility is high to have itself defect on inside the specimen or coarse grain size precipitation is different in happened over-aging phenomenon. Especially, in case of 300℃, 3 hours and 400N condition appeared AE energy in elastic limit fairly high about 30 times than non-treatment specimen. This is considered by emit a lot of energies when material causes plastic deformation because the ductility increases on specimen by over-aging phenomenon.

The present management of the domestic and international advanced enterprises is transferring the systems and the regulations to the prevention system management. Expecially, KOSHA (Korea Occupational Safety & Health Agency) in Korea has supported to set up the OSHMS (Occupational Safety & Health Management System) by KOSHA 18001 since 1997. But small & medium enterprises (SMS) has many difficulties to set up the OSHMS system because of limited natural and human resources. In this study, the rating system as a judgment method of an OSHMS based on the certification standard of the OSHMS was suggested for SMS to adopt voluntarily the OSHMS, certify KOSHA 18001, and improve the safety and health level.