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성인에서 Hyrax 장치로 완속상악확장하여 폭경부조화를 개선한 증례
곽경호(Kyoung Ho Kwak),김성식(Seong Sik Kim),김용일(Yong-Il Kim),박수병(Soo-Byung Park),손우성(Woo-Sung Sona) 대한치과의사협회 2017 대한치과의사협회지 Vol.55 No.6
Approximately 30% of adult patients who want orthodontic treatment have transverse discrepancy with insufficient width of the maxilla. Particularly, in Class III patients requiring orthognathic surgery, the frequency of insufficient width of the maxillary arch related to respiratory problems is high. We report a case of non-surgical maxillary expansion using a Hyrax type expander with an orthognathic surgery, based on the reports that the ratio of non-fused midpalatal suture is not high in adults. A 30 years and 2 months old woman with a long face showed an Angle Class III with a vertical growth pattern. Class III molar and canine relation, anterior edge bite, and mandibular incisor compensatory lingual inclination were observed. The posterior buccal overjet seemed to be appropriate, but I diagnosed that there was a transverse discrepancy, for the following reasons. The inter-canine and inter-molar widths were sufficient but excessive lingual inclination of the mandibular molars was observed when assessing the bucco-lingual inclination based on the center of resistance of the maxillary and mandibular first molar. For this reason, it was expected that intercuspal interference would occur during orthodontic decompensation. Therefore, slow maxillary expansion using Hyrax type expander was performed and 2-jaw rotation surgery was performed to improve aesthetic and occlusion. Adults can also improve width discrepancy by non-surgical methods, which can avoid SARPE requiring additional surgery or segmental surgery lacking stability and predictability.
곽경호(Kwak Kyoung-Ho),박석(Park Suk),이상호(Lee Sang-Ho),김태영(Kim Tae-Young) 한국체육과학회 2008 한국체육과학회지 Vol.17 No.4
This study is to investigate how stress hormone has an effect on athletic performance of triathlon players. In order to assess change in body fluid, electrolyte, and hormone, the participants were divided into excellent players and non-excellent players of changes in the level of eythrocyte hematocrit, plasma osmotic pressure, Na+, K+, norepinephrine, testosterone, and cortisol during the 30 minute-pre-event, post-swimming event, post-cycle event, post-marathon race, and restoration period were monitored. As a result, plasma osmotic pressure, stress hormone, blood norepinephrine, and cortisol levels increased significantly during the triathlon event and restoration period, and maintained significantly higher in non-excellent group than excellent group. As mentioned above, excessive increase of body fluid and electrolyte during the triathlon event is thought to be due to falling sensitivity of reaction of kidney to target cells under the negative feedback of R-A-A system, and these may cause dehydration, exhaustion, radicular pain, muscle cramp, and edema during the triathlon event. In addition, increase in stress hormone during the triathlon event is seen as a hormone reaction to excessive physical activity, and it means decreasing restoration capacity to reduce and maintain the level at stable state, that is, normal level, which in turn may drive lower athletic performance of non-excellent players than their counterparts.
野生鳥獸 人工飼育農家의 經營實態分析 : 사슴, 꿩, 멧돼지와 여우 飼育農家를 中心으로 Deer, Pheasant, Wild Boar and Fox Reading Farmhouses
郭炅鎬,趙應赫,金世彬,吳慶秀 충남대학교 농업과학연구소 1993 농업과학연구 Vol.20 No.1
This study was conducted to obtain necessary informations for improving of wildlife rearing management. The data was gathered by surveying with questionaire. One hundred and eighty farmers which was 60 of deer and pheasant. 30 of wild boar and fox rearing farmers respectively were investigated during the summer in 1992. The results of this study are as follows 1. Most of managers considered their rearing as a side job but agriculture was appointed as a main job from most of them except wild boar managers. 2. The major cost items were breeding stock and feeding which occupied over than half. 3. The yearly profit was the highest in deer(25.5%) but the lowest in wild boar (10.3%). 4. The break-even point was the highest in wild boar(24 mil. won) but the lowest in pheasant(7.3 mil. won). 5. The optimum sales scale for a year was deer(11 heads). Pheasant(1,027 heads). Wild boar(69 heads) and Fox (102 heads).