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GIS를 이용한 자연자원관리체계 구축 및 활용 : 소백산 국립공원의 일부지역을 중심으로
申永澈,金善和 충북대학교 농업과학기술연구소 1997 農業科學硏究 Vol.14 No.-
GIS-based management information system including graphic and attribute data was studied on selected 4 tree and 8 herbs in Mt. Sobaek. G.I.S. with IDRISI software was applicated. The results were as followed ; 1.The use of G.I.S. system made easy to store, manage and update data. It would save time and effort as well as prevent the data lost. Therefore it would make easy to hand over the duty between natural park manager. 2.Overlay method and three- dimensional spatial analysis by DTM would give the better chance to grasp the location of natural resources and to understand environmental information in Mt. So-baek. 3.This method would give necessary information for establishment of management plan. The user would easily understand spatial details by output of overall analysis. 4.Overlay and DTM's analysis could be utilized for management of natural resources and establi-shment of developmental plan in the Mt. Sobaek National Park.
초내열 합금 Alloy718의 저주기 피로시험에서 반복연화 및 R=X (X=0,-1)효과
최병학,신수근,신정근,김선화,윤기봉,염종택,박노광 국립7개대학공동논문집간행위원회 2005 공업기술연구 Vol.5 No.-
The LCF properties for R=0 as tension-tension and R=-1 as tension-compression were examined in DA alloy718. While the hysteresis loops composed of ?ε_(t), ?ε_(p) and ?σ were figured with similaity in both of R=0 and R=-1, the loops of R=0 were continuely going down along the stress axis during cyclic fatigue progressing. It was caused by Bauschinger effect, which includes a tendancy for stress recovering as an amount of compression stress. The phenomena of cyclic softening in both of R=0 and R=1 seem to be caused by planar slip of dislocations, which was accompanied by shearing the γ'/γ" precipitates during the cyclic fatigue test.
환기정도에 따른 수술실용 신발 종류가 수술실 오염에 미치는 영향 : How to Choose Suitable Shoes?
남경동,정혜선,박영신,원진희,주미자,성화신,이지혜,이병희,조경숙,배재춘 한국의료QA학회 2000 한국의료질향상학회지 Vol.7 No.1
Background : Various types of protective footwear have been used to minimize bacterial contamination in operating rooms. In recent years, debate has arisen concerning the need for use of such protective footwear. This study was designed to provide useful data about choosing shoes most suitable for the surgical environment. Methods : Between November, 1999 and January, 2000, we performed this experimental study by comparing effect of three types of shoes (i.e., disposable shoescover, operating room-restricted shoes, and ordinary shoes) on bacterial contamination of operating rooms equipped with two different ventilation systems (i.e., high air-change, low air-change) respectively. Data were collected during two-hour sham operations in which subjects and their activities were strictly standardized. Bacterial flora were sampled from the study area floor and air colony-counts were measured. Results : In experiments involving high air-change ventilation system, there was a significant difference of floor contamination between three types of shoes, but no difference of air contamination. Under low air-change system, there was a significant difference of both floor and air contamination between three types of shoes. Conclusion : The results show that protective footwear would be unnecessary in the operating room with high air-change ventilation system, but it is important to choose suitable shoes carefully under low air-change system. Therefore, the use of outdoor shoes can be considered under high air-change system, but it would seem sensible to apply their first use in less bloody operations at the day surgery center or out-patient department to prevent transfer of body fluid into the outside environment.
Shin Hwa Seon,Na Dong Gyu,Paik Wooyul,Yoon So Jin,Gwon Hye Yun,Noh Byeong-Joo,Kim Won Jun 대한영상의학회 2021 Korean Journal of Radiology Vol.22 No.4
Objective: To determine the association of macrocalcification and rim calcification with malignancy and to stratify the malignancy risk of thyroid nodules with macrocalcification and rim calcification based on ultrasound (US) patterns. Materials and Methods: The study included a total of 3603 consecutive nodules (≥ 1 cm) with final diagnoses. The associations of macrocalcification and rim calcification with malignancy and malignancy risk of the nodules were assessed overall and in subgroups based on the US patterns of the nodules. The malignancy risk of the thyroid nodules was categorized as high (> 50%), intermediate (upper-intermediate: > 30%, ≤ 50%; lower-intermediate: > 10%, ≤ 30%), and low (≤ 10%). Results: Macrocalcification was independently associated with malignancy in all nodules and solid hypoechoic (SH) nodules (p < 0.001). Rim calcification was not associated with malignancy in all nodules (p = 0.802); however, it was independently associated with malignancy in partially cystic or isoechoic and hyperechoic (PCIH) nodules (p = 0.010). The malignancy risks of nodules with macrocalcification were classified as upper-intermediate and high in SH nodules, and as low and lowerintermediate in PCIH nodules based on suspicious US features. The malignancy risks of nodules with rim calcification were stratified as low and lower-intermediate based on suspicious US features. Conclusion: Macrocalcification increased the malignancy risk in all and SH nodules with or without suspicious US features, with low to high malignancy risks depending on the US patterns. Rim calcification increased the malignancy risk in PCIH nodules, with low and lower-intermediate malignancy risks based on suspicious US features. However, the role of rim calcification in risk stratification of thyroid nodules remains uncertain.
Screening for Anti-diabetic Effects of Prescribed Korean Traditional Medicines
Shin, Seon Mi,Jeong, Yong Joon,Park, Dae Won,Ko, Heung,Kim, Gi Tae,Kim, Ee-Hwa,Kim, Taeseong,Sohn, Eun-Hwa,Kwon, Jung-Eun,Koo, Hyun Jung,Kang, Se Chan The Plant Resources Society of Korea 2012 한국자원식물학회지 Vol.25 No.6
Herb extracts commercially used in Korea were screened for PPAR-${\gamma}$ agonist test and ${\alpha}$-glucosidase inhibition assay. Total 16 herb plants had a PPAR-${\gamma}$ agonist activity. Specially, Alisma orientale Juz (108.41%), Ephedra sinica (98.22%), Sasa japonica Makino var. purpurascens Nakai (140.68%), Astragalus membranaceus Bunge (106.79%) and Cnidium officinale Makino (113.00%) showed high PPAR-${\gamma}$ agonist activity rate compared with rosiglitazone's (167.46%). And Cornus officinalis S. et Z. (90.3%), Cinnamomum cassia Blume (89.2%), Psoralea corylifolia L. (89.8%), Paeonia japonica (Makino) Miyabe (92.4%) and Paeonia suffruticosa Andr (93.2%), showed high ${\alpha}$-glucosidase inhibition rates. These results support previous reports of the efficacy of Oriental medicinal plants used for diabetes mellitus.