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교정용 미니 임플랜트 고정원과 SWA en masse sliding retraction 시 전치부 치축 조절 요인에 관한 유한요소해석
정혜심,성상진,문윤식,조영수,임승민 대한치과교정학회 2006 대한치과교정학회지 Vol.36 No.5
교정용 미니 임플랜트 고정원을 이용한 교정 치료가 보편화되며, SWA와 이를 이용한 en masse sliding retraction은 임상에서 흔히 사용하는 치료법이 되었다. 그러나 고정원을 성공적으로 보존하려는 노력에 비해, 발치 공간 폐쇄 시 전치부 치축 조절에 관여하는 요인에 대한 보고는 아직까지 부족한 실정이다. 본 연구에서는 제1소구치를 제거한 상악 치아와 치주 인대 그리고 치조골에 대한 3차원 유한요소 기준모델을 제작하였고, 제1대구치와 제2소구치 사이 주호선 10 mm 상방에 식립된 교정용 미니 임플랜트를 고정원으로 사용할 경우, 측절치-견치 사이의 견인 훅의 높이를 변화시키며 후상방 견인력을 가하거나, 주호선에 보상 만곡을 부여하는 것이 전치부 치축 조절에 어떤 영향을 미치는지 시뮬레이션 하였다. 또한 전치부 치축이 설측 경사된 모델을 같은 실험 조건으로 시뮬레이션 하여 발치 공간 폐쇄 시 설측 경사된 전치부 치축을 유지하거나 개선할 수 있는 요인을 검토하였고, 다음과 같은 연구 결과를 얻었다. 2 mm 높이의 견인 훅에 대하여 후상방으로 견인력을 가할 경우 발생하는 함입력으로 인하여 전치부 설측 경사가 더 감소되지는 않았다. 견인 훅의 높이가 5 mm인 경우 후상방 견인력을 가하면, 측절치의 치관 순측 및 치근 설측 이동이 일어나고, 견치의 비조절성 후방 경사 이동이 심화되었다. 4 mm의 보상 만곡은 측절치의 치관 순측 및 치근 설측 이동을 일으키고, 견치의 비조절성 후방 경사 이동을 감소시켰다. 또한 전치부가 설측 경사된 모델을 기준모델과 같은 실험 조건으로 시뮬레이션 한 경우 치근면의 응력 분포와 25000배 확대된 그래프 상에서의 치아 이동 양상은 매우 유사하였다. 이상의 결과는 미니 임플랜트-SWA sliding 생역학을 구사 시 견인 훅의 위치와 와이어 상의 보상 만곡의 유무에 의해 전치부의 치축 조절이 달라지며 실제 임상에서 가이드라인으로 활용될 수 있을 것이다. Objective: With development of the skeletal anchorage system, orthodontic mini-implant (OMI) assisted en masse sliding retraction has become part of general orthodontic treatment. But compared to the emphasis on successful anchorage preparation, the control of anterior teeth axis has not been emphasized enough. Methods: A 3-D finite element Base model of maxillary dental arch and a Lingual tipping model with lingually inclined anterior teeth were constructed. To evaluate factors influencing the axis of anterior teeth when OMI was used as anchorage, models were simulated with 2 mm or 5 mm retraction hooks and/or by the addition of 4 mm of compensating curve (CC) on the main archwire. The stress distribution on the roots and a 25000 times enlarged axis graph were evaluated. Results: Intrusive component of retraction force directed postero-superiorly from the 2 mm height hook did not reduce the lingual tipping of anterior teeth. When hook height was increased to 5 mm, lateral incisor showed crown-labial and root-lingual torque and uncontrolled tipping of the canine was increased. 4 mm of CC added to the main archwire also induced crown-labial and root-lingual torque of the lateral incisor but uncontrolled tipping of the canine was decreased. Lingual tipping model showed very similar results compared with the Base model. Conclusion: The results of this study showed that height of the hook and compensating curve on the main archwire can influence the axis of anterior teeth. These data can be used as guidelines for clinical application.
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방사선 치료를 받는 암 환자들의 사회적 지지와 삶의 질과의 관계
정주희,류소연,윤혜은,남택근,오윤경,안현옥,박계남,이영선 朝鮮大學校 附設 醫學硏究所 2002 The Medical Journal of Chosun University Vol.27 No.2
Objective : This study was performed to investigate the relationship between social support and quality of life among cancer patients receiving radiation therapy. Matehals and Methods : The data were collected from 98 patients, who were receiving radiation therapy at two university hospitals located in GwangUJu, used by structured questionnaire. For statistical analyses of the association between quality of life and various characteristics, data were analyzed using t-test, ANOVA, Pearson 's correlation, and multiple regression analysis. Results: 1. There were 56(57.1%) males and 42(42.9%) females. Age ranged from 21 to 82 years. The primary sites of cancer were gastrointestinal tract (24.5%), lung (23.5%), breast (21.4%), and head and neck (11.2%) in order. 2. The mean scores of social, family, and medical support were 4.30 0.58, 4.49 0.78, 4.11 0.65, respectively. The score of quality of life was 5.83 1.63 (range: 1.95 ~ 9.05). 3. An analysis of the association between several factors of patients and quality of life showed that the statistically significant factors were age, the presence of distant metastasis, family support, medical support and social support. 4. As a result of the multiple regression analysis, only social support was significant (β=0.932, P=0.02) with quality of life, but age and presence of distant metastasis were not significant. Conclusion : This suggests that quality of life in cancer patients could be improved by strengthening the social support which consists of family and medical support. Further study would be necessary to evaluate separately several aspects of quality of life among cancer patients.
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김정림,윤혜미 충북대학교 교육 ·생활연구소 생활과학연구센터 2002 생활과학연구논총 Vol.6 No.2
The purpose of this study was to investigate the relationship between mothers' attitudes toward corporal punishment and perception of child maltreatment of mothers with young children. The sample of this study were 5% of total research population, who were mothers with children aged three to five, attending public and private educare centers. Self-administered structured questionnaire method was employed. Data were analyzed with SPSS WIN statistical package, in detail, factor analysis, t-test, and correlation analysis methods were utilized. The results of this study were ; (1) Differences were found between mothers's attitudes toward corporal punishment according to the child's age and gender. (2) Mothers with children younger than 5years old were more alert on the issue of child maltreatment (physical & emotional) than those with children older than 6 years of ages. (3) Correlations were found between mothers' attitude toward corporal punishment & their perception of child physical & emotional maltreatment, the more generous the mothers' attitude toward corporal punishment, the lower their perception of child maltreatment. Mothers who live in the urban setting were more sensitive toward the issue of child maltreatment & corporal punishment.
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朴在允,金惠正 國民大學校 法學硏究所 2002 법학논총 Vol.14 No.-
Die vorliegende Arbeit wird sich mit der Untersuchung der Problematik eines Bewa¨hrungssystems durch eine berufliche Zufriedenheit der Bewa¨hrungshelfer in Korea befassen. Fu¨r diese Arbeit wurde eine Umfrage (ein Fragebogen fu¨r gesamte Bewa¨hrungshelfer in Korea) gcstellt. Seit 1989 betrifft die Unterstellung unter dem Bewa¨hrungshelfer gegen jugendliche Krirninalta¨ter vor allem die Riskofa¨lle, bei denen tine giinstige Prognose nur infolge der zur Verfu¨gung gestellten Hilfe and Betreuung gestellt werden kann. Und seit 1997 wird sie gegen Erwachsenenta¨ter erweitert. Seitdem wa¨chst eine Anzahl der Bewa¨hrungshilfe erstaunlich zu. Im Jahr 2000 wurden 90,431 Personen eine Strafaussctzung bzw. Strafrestaussetzung zur Bewa¨hrung beurteilt. Problematisch ist, daB ein Bewa¨hrungshelfer eine Doppelfunktion hat; einerseits soil er dem Verurteilten helfend and betreuend zur Seite stehen, anderseits ist er jedoch verpflichtet, daB er den Verurteilten kontrollicren soli. Aber eine Bezichung zu dem einzelnen Tater kann in der Regel nicht sehr intensiv sein, weft ein Bewa¨hrungshelfer inn Druchschnitt ca. 300 Probanden gleichzeitig zu bewa¨chen and zu betreuen hat. Nach dem Ergebnis der Umfrage sind gegenwa¨rtige Situationen der Bewa¨h ungshilfe Behr niedrig. - Z.B., hauptliche Bewa¨hrungshelfer sind sehr wenig and eine Finanzierung von der Regierung fur die Bewa¨hrungshilfe ist sehr niedrig usw.. - Damit sind die meisten Bewa¨hrungshelfer mit ihrer Arbeit unzufrieden. Sie kritisieren solche schlechten Situationen. Trotz solcher schlechten Situation muJ3 ein Bewa¨hrungssystem weiter entwickelt werden. Dafur kann/soll eine privatliche verfugbare Arbeitskrafte and materielle Quelle entwickelt and breit angewandt werden.
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전정례,박정륭,김진,윤시혜 동아시아식생활학회 1995 동아시아식생활학회지 Vol.5 No.2
식물성 단백질 자원으로 참깨의 유지 추출 후 분리되는 박은 단백질 함량이 높으며 질 또한 우수하여 단백질 자원으로서 이용 가치가 높이 평가되고 있으나 종실박에 함유된 oxalate와 phytate는 무기질과 결합하여 단백질의 이용과 기능성을 저해하고 페놀 화합물은 유지 추출 과정에서 높은 열 처리로 인해 변색을 유발아여 참깨박의 이용을 비료나 동물 사료로 제한하고 있다. 따라서 본 연구는 참깨박에 존재하는 비 영양성분을 제거시킬 목적으로 한외여과에 의해 농축 단백질을 제조하여 이들의 항영양 성분과 기타 성분을 기존의 산침전 분리단백질과 비교 검토하여 다음과 같은 결과를 얻었다. 산침전 참깨박 분리단백질의 조단백질 함량은 88.7%로서 18.32%의 단백질이 회수되었으나 10K, 30K, 100K 막을 사용하여 한외여과에 의해 제조된 참깨박 농축단백질들의 조단백질의 함량은 각각 84.2%, 82.7%와 76.4%로 단백질 회수율은 36.44%, 34.69%, 31.43%로 각각 나타났다. 참깨박의 알칼리 용액으로 추출한 다음 한외여과에 의한 단백질의 농축은 oxalate와 phytate의 함량을 상당량 감소시켰으며 분획 분자량 100K의 막을 사용한 한외여과의 경우 oxalate는 85%, phytate는 94%까지 제거되었으나, 페놀화합물의 함량은 산 침전 및 한외여과 공정에 의해 감소되지 않았다. 참깨박의 칼슘과 아연의 칼슘은 한외여과 공정에 의해 감소되었으며 특히 칼슘은 한외여과에 의해 99%나 제거되었다. 한외여과에 의해 제조된 참깨박 농축단백질의 필수아미노산 함량은 분리단백질에 비해 약간 감소되었다. Defatted sesame flour is the by-products obtained after oil extracting process. Although this flour has high quality and quantity of protein, its use is limited only for animal feed and fertilization. Sesame seeds contain antinutrients such as oxalate, phytate and phenol compounds and these compounds lower their nutritive value. Recently, ultrafiltration(UF) has been used to concentrate protein from various food sources. This study was carried out to examine the effects of UF with different membrane pore size on the components of sesame protein concentrates including antinutrients and to compare with that of conventional acid-precipitated sesame protein isolate. The protein contents of sesame protein concentrates prepared by UF using 10K, 30K, 100K were 84.2%, 82.7%, 76.4% and the protein yields were 36.44%, 34.69, 31.43% on the basis of defatted sesame flour, respectivily. Whereas sesame protein isolate was recovered 18.3% and the protein contents was 88.7%. Alkali extraction process at pH 9.0 followed by UF technique reduced oxalate and phytate content. There were 85% and 94% reduction of oxalate and phytate content by UF with membrane pore size of 100K daltons, respectively. However, the content of total phenol compounds was not reduced by this method. About 99% of calcium and 50% of zinc were removed by UF with membrane of 100K daltons. Total essential amino acid contents of sesame protein concentrates prepared by UF were decreased slightly when compared with acid-precipitated sesame protein concentrate.
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유용성 도료와 수용성 도료의 유해성 비교에 관한 연구 : 자동차 보수용 도료를 중심으로
권은혜,김광식,오정룡,최정근,정윤석,이유진,김은아,송세욱,정호근 한국산업위생학회 2001 한국산업보건학회지 Vol.11 No.1
The purpose of this study is to substitute water-based painting materials for the current solvent-based ones used in motor-repairing process to minimize the exposure of organic solvents to the painters. This study assessed the exposure of organic solvents to the painters using water-based and solvent-based painting materials and compared compositions, painting processes and the health hazards of the application of these alternative painting materials. The results of this study are as follows. 1. solvent-based painting materials used in motor-repairing process consist of various organic solvents, which consist primarily of toluene, xylene, ethyl benzene, ethyl methyl bezene, trimethyl bezene, ethyl acetate, butyl acetate, methyl isobutyl ketone, 2-ethoxy ethanol, 2-ethoxy ethyl acetate and toluene-2.4-diisocianate and the others. These organic solvents are know as health-hazardous substances. But water-based painting materials are high-solid, low-solvent ones and consist of such two organic solvents as 2-butoxy ethanol and 2-heptanone and the others. 2. The painters using solvent-based painting materials in motor-repairing process are exposed to various organic acetate, methyl isobutyl ketone, trimethyl benzene, 2-ethoxy ethanol, and 2-ethoxy ethyl acetate. But the painters using solvent-based ones are only exposed to 2-butoxy ethanol and 2-heptanone. 3. By using water-based painting materials in stead of solvent-based painting materials containing health-hazardous organic solvents, the exposure of such organic solvents in the painter's breathing zone can be largely prevented. 4. This study recommends water-based painting materials as substitutes for the current solvent-based ones used in motor-repairing process to minimize the exposure of organic solvents to the painters.
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