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차폐막 노출이 발치 후 치조제 보존술의 결과에 미치는 영향에 관한 임상적 연구
남현욱,박윤정,구기태,김태일,설양조,이용무,구영,류인철,정종평,Nam, Hyun-Wook,Park, Yoon-Jeong,Koo, Ki-Tae,Kim, Tae-Il,Seol, Yang-Jo,Lee, Yong-Moo,Gu, Young,Rhyu, In-Chul,Chung, Chong-Pyoung 대한치주과학회 2009 Journal of Periodontal & Implant Science Vol.39 No.3
Purpose: Following tooth extraction caused by severe periodontitis, alveolar ridge dimension lose their original volume. To reduce the alveolar ridge dimension, the ridge preservation technique has been introduced and tested in many clinical studies with membrane alone or membrane plus graft, achieving reduced ridge loss compared to extraction only. The aim of the present clinical study was to compare the post-extraction dimensional changes in the membrane exposure group to non-exposure group during healing period following ridge preservation technique. Methods: Ridge preservation was performed in 44 extraction sites. After extraction, deproteinized bovine bone mineral coated with synthetic oligopeptide (Ossgen-$X15^{(R)}$) or deproteinized bovine bone mineral (Bio-$Oss^{(R)}$) was implanted into the socket. A collagen membrane (Bio-$Gide^{(R)}$) was trimmed to cover the socket completely and applied to the entrance of the socket. Four clinical parameters were compared between baseline and 6 months. Results: During healing period, membrane exposure was observed at 19 sites. At the re-entry, hard newly formed tissue were observed at the ridge preservation site. The grafted socket sites were well preserved in their volume dimension. In both groups, horizontal ridge width was reduced and vertical height was increased. There were not statistically significant differences in horizontal (-1.32 mm vs -1.00 mm) and vertical ridge change (2.24 mm vs 2.37 mm at buccal crest, 1.36 mm vs. 1.53 mm at lingual crest) between two groups. Conclusions: The ridge preservation approach after tooth extraction effectively prevented resorption of hard tissue ridge in spite of membrane exposure during healing period.
읽기과제에서 나타난 뇌성마비인의 기본주파수 및 진폭의 분포 특성
남현욱,최양규,Nam, Hyun-Wook,Choi, Yang-Gyu 대한음성학회 2008 말소리 Vol.66 No.-
The purpose of this study was to investigate the characteristics of fundamental frequency(F0) and amplitude distributions in persons with cerebral palsy(CP) in the reading task. Participants were divided into three groups: 6 persons with spastic CP, 6 persons with athetoid CP and 6 normal persons who are around 15-20 years old. On the results of this study, firstly, in F0 distributions, most of the spastic CPs tended to appear narrow distributions on the basis of mode, but most of the athetoid CPs were opposite, and both of the CP groups tended to distribute highly on lower and higher frequencies than mean and mode. On the other hand, normal persons had a tendency to appear narrow distributions on the basis of mode. Finally, in amplitude distributions, the spastic CPs showed a tendency that there are little differences between the distribution of mode and the others, and most of the athetoid CPs showed a tendency that the distributions of mode were higher than the others. In addition to, the normal persons had a tendency that the distributions of mode were remarkably higher than both of the CP groups.
예비성형체 및 금속복합재료에 미치는 바인더의 영향에 관한 연구
남현욱,민병렬,이종해,한경섭,Nam, Hyun-Wook,Min, Byung-Ryoul,Lee, Jong-Hae,Han, Kyung-Seop 대한기계학회 1999 大韓機械學會論文集A Vol.23 No.6
The effects of binder on the mechanical properties of the preforms and metal matrix composites (MMCs) were studied. Fibers were $9Al_2O_3{\cdot}2B_2O_3(Alborex)$, HTZ and $Al_2O_3$ fibers(Saffil) and binders were organic binder, inorganic binder, polyacrylamide under various PH conditions. Compressive strength of the preform increased with the addition of inorganic binder. The polyacrylamide did not improve the permeability of the preforms. PH of the slurry should be controlled because it affects the viscosity of the slurry. Good preforms were obtained under following conditions : 3 wt% inorganic binder, 0.1 wt% organic binder, 0.1 wt% polyacrylamide and PH 9. Tensile tests of MMCs were conducted at $20^{\circ}C,\;150^{\circ}C,\;250^{\circ}C,\;350^{\circ}C$ using MTS(100KN USA). Wear tests were conducted under various sliding speeds. High temperature($250^{\circ}C$) tensile strengths of Alborex/Saffil/AC8A and HTZ/AC8A are 80% and 75% of the room temperature tensile strengths respectively. The tensile and wear properties of the Alborex/Saffil/AC8A are superior to that of the HTZ/AC8A. The wear behavior of HTZ/AC8A shows more orthotropic characteristic than that of Alborex/Saffil/AC8A.
심한 정도에 따른 경직형 뇌성마비 대상자의 교호운동 특성: 속도, 규칙성, 정확성, 일관성을 중심으로
남현욱,안종복,권도하,Nam Hyun-Wook,Ahn Jong-Bok,Kwon Do-Ha 대한음성학회 2006 말소리 Vol.58 No.-
The purpose of this study was to investigate diadochokinetic (DDK) characteristics in the subjects with spastic cerebral palsy (CP) by severity. DDK characteristics were measured through rate, regularity, accuracy and consistency in Alternate Motion rate (AMR) and Sequential Motion rate (SMR) tasks. The subjects participated in this study included 27 subjects with spastic CP (mild- 9, moderate- 9, severe- 9) and 9 normal persons who are around 11-20 years old. On the result of this study, rate in AMR was significant difference between all spastic groups and normal group, and rate in SMR was significant difference between normal and mild groups and moderate and severe groups. In regularity of the DDK tasks, severe group had significant difference the other groups. Finally, accuracy and consistency of the DDK tasks exhibited significant difference between all spastic groups and normal group. In conclusion, the subjects with spastic CP have a tendency to produce slow and irregular syllable repetition as severity increases, but to produce inaccurate and inconsistent syllable repetition regardless of severity in the DDK tasks.
남현욱 ( Hyun Wook Nam ),안종복 ( Jong Bok Ahn ),권도하 ( Do Ha Kwon ) 대구대학교 한국특수교육문제연구소 2006 특수교육저널 : 이론과 실천 Vol.7 No.1
The purpose of this study was to investigate the interjectional characteristics in children and adults who stutter. The interjectional characteristics were measured through the ratio, the linguistic unit, and the length in monologue about picnic, travel and TV program for a minute. Eleven stuttering children(8 males, 3 females), from 5 to 12 years old, and eleven stuttering adults(15 males, 17 females), from 17 to 32 years old, were participated in the study. The results of this study were as follows; First, there was significant difference between stuttering children and adults groups in the interjectional ratio, and interjectional ratoi in adults who stutter indicated significantly higher than the one in children who stutter. Second, in terms of linguistic units, there was no significant difference between groups, but there was significant difference among linguistic units, and syllable interjections were significantly higher than vowel, clutter and phrase interjections. Finally, in the linguistic length, there was no significant difference between groups, but there was significant difference among linguistic lengths, and one-syllable interjection was significantly higher than two, three, four and five-syllable interjections.
통일전 후 사회 - 경제적 갈등해결에서 독일 국민복지국가정책의 역할 - 노동시장정책 영역을 중심으로 -
남현욱(Hyun Wook Nam) 한국행정학회 1999 韓國行政學報 Vol.33 No.4
본 지역연구에서는 통일 전·후 구서독의 국민복지국가 정책이 사회-경제적 갈등의 해결기제(Lo¨sung-Mechanismus)로서 어떻게 기능할 수 있었는가를 다루었으며, 특히 구동독 지역의 체제변형과정에서 구서독의 적극적 노동시장 정책이 사회·경제적 갈등을 최소화·단기화하고 국민통합의 막중한 역할을 수행한 사설에 주목하면서, 그 구체적 내용을 분석·제시하였다. 독일의 경험은 우리나라 통일 전·후의 상황에서 야기될 사회·경제적 갈등을 효과적으로 해결하는데 도움이 되는 시사점을 제공할 수 있을 것으로 본다.