안면골격 형태와 중심교합위-중심위 변위간의 상관성에 관한 연구

조진영,이영준,박영국,정규림 대한치과교정학회 1998 대한치과교정학회지 Vol.28 No.5

이 연구는 각 유형의 부정교합과 중심교합위-중심위 변위량 간의 상호관련성을 구명하기 위하여 시행되었다. 각 부정교합자 군에서 중심교합위-중심위 변위를 3차원적으로 비교 평가하고, 각 안면골격 형태의 특징에 따른 변위량의 차이 유무를 분석하고, 각 유형의 부정교합 골격형태에서 중심교합위-중심위 변위와 두개안면골격 계측요소간의 상관성을 검정하였다. 242명의 부정교합자를 대상으로 중심교합위 상태에서 얻어진 측모두부X선규격사진을 계측하고 이들을 수평적, 수직적 관계에 의하여 9군으로 분류하였다. 또한 이들로부터 중심위와 중심교합위에서의 교합기록을 채득하고 face-bow로 안궁이전을 한 뒤 석고모형을 교합기에 중심위 상태로 탑재하였다. CPI를 이용하여 중심위와 중심교합위의 하악과두위치를 측정하고 이들과 각 군의 측모두부X선규격사진 계측치와의 상관성을 검정하기 위하여 통계처리한 결과 다음과 같은 결론을 얻었다. 1. 중심교합위-중심위 변위의 양과 방향에서 좌측과 우측은 중등도의 상관관계를 보였으며 전후방보다는 상하변위의 좌·우측 상관성이 다소 높았다. 2. Ⅱ급 부정교합군이 Ⅰ급과 Ⅲ급 부정교합군에 비해 좌우측간의 중심교합위-중심위 변위가 높은 상관관계를 보였다. 3. 각 부정교합군에서의 중심교합위-중심위 변위 유형은 유의한 차이가 없었다. 4. 중심교합위 상태의 측모두부X선규격사진상에서의 안면골격의 형태요소와 중심교합위-중심위 변위간에는 상관성이 적었다. 5. Ⅱ급 brachyfacial skeleton과 Ⅲ급 mesofacial skeleton의 일부 계측치에서 CPI수치를 예측할 수 있는 항목들이 나타났다. 중심교합위-중심위 변위의 양과 방향은 특정한 안면형태요소와는 무관하며 하악과두의 위치변이는 부정교합양태나 안면골격형태와 관계없이 발현되었다. The present study was performed to prove the relationship between CO-CR discrepancy and facial skeletal type. In this study, 242 subjects were randomly selected and devided into 9 groups(devided into class Ⅰ,Ⅱ, Ⅲ by ANB and each one devided into dolicho-, brachy-, mesofacial skeleton by Ricketts' vertical index). Lateral cephalometric radiographs with the mandible in centric occlusion were taken and measured and CO and CR bites were registered on all subject. Diagnostic casts were mounted on Panadent articulator using an estimated face-bow and centric relation bite registration. The amount and direction of CO-CR discrepancy present was recorded using a Condylar position Indicator(CPI) and a centric occlusion wax bite registration. CPI measurements and cephalometric measurements were statistically analyzed. The finding of this study can be summerized as follows: 1. There is little correlation between right and left sides for magnitude or direction of CO-CR discrepancies. The correlation between the magnitude of CO-CR discrepancy of left A-P and right A-P is higher than that of left S-I and right S-I. 2. Correlation of Class Ⅱ malocclusion group was higher than that of the other groups between the magnitude of Co-CR discrepancy of left CPI and right CPI. 3. There is no difference between the pattern of Co-CR discrepancy of 9 malocclusion groups. 4. There is very little, if any, correlation between Skeletofacial measurements and CO-CR discrepancy. 5. In the Class Ⅱ brachyfacial skeleton and ClassⅢ mesofacial skeleton there was Lateral cephalometric measurements by that we predict CPI measurements was detected. That was overbite, overjet, upper gonial angle, lower gonial angle, saddle angle, articular angle, convexity of point A, ANS-Me/Na-Me, PCBL/RH, Posterior FH/anterior FH.

Population Dynamics of Zacco platypus in Gap-Stream and Its Relation with Water Quality

Shin, Young-Eun,Choi, Ji-Woon,An, Kwang-Guk The Korean Society of Limnology 2009 생태와 환경 Vol.38 No.1

This study was to provide basic data for aquatic ecosystem research using fishes. Field sampling was carried out at five selected sites of Gap Stream, and fish samples, especially for a selection of sentinel species were collected three times in June, September, and October 2007. We analyzed total length distribution of Zacco platypus in relation with the season and the sampling sites, and then compared with total body weight, condition factor (K), and age distribution of the fish. The fish population data were compared with physico-chemical water quality, obtained from the Ministry of Environment, Korea. Water quality analysis showed a significant nutrient enrichment, based on total nitrogen (TN) and total phosphorus (TP), and organic matter pollution, based on biological oxygen demand (BOD) and chemical oxygen demand (COD) in the Site 5, which is directly influenced by wastewater disposal plant (WDP). Population analysis of the sentinel species showed that the total number of individuals, age distribution, and the population size-structure were influenced by the effluents from the WDP, and that reproductive failure of young-age population were evident in Site 5. According to the relation analysis of total weight to K, the disturbed population was mainly attributed to combined effects of habitat modifications and chemical degradations. Regression analysis of K values against water quality parameters showed significant (p<0.05) positive relations with nutrient and organic matter contents. Our data suggest that the population structure using a sentinel fish species reflected the ambient water quality in the stream and that diagnosis of aquatic ecosystem health using Z. platypus population may be practical for water resource and ecosystem conservations.

정상인에서 베타3-아드레날린 수용체 유전자의 변이가 복부 비만도 및 지질대사에 미치는 영향

김영선,윤석기,김철희,서교일,김학선,김극배,변동원,유명희 순천향의학연구소 1998 Journal of Soonchunhyang Medical Science Vol.4 No.1

The β₃-adrenergic receptor is expressed in visceral adipose tissue in humans and is thought to contribute to the regulation of the resting metabolic rate and lipolysis. We studied the influence of a mutation in the β₃ -adrenergic receptor gene(Trp64Arg) on body fat distribution, central obesity, lipid metabolism in 65 healthy young male adults. One out of 65 subjects were homozygous (Arg/Arg) for the trp64Arg mutation, 17 subjects were heterozygous (Trp/Arg), and 47 lacked the mutation(Trp/Trp). The body weight, height, body mass index, waist-to-hip ratio were similar between the subjects with- and without the mutation. Total body fat, abdominal fat amount, body fat distribution, serum total- and HDL-cholesterol, triglyceride, glucose, and insulin concentrations were also not different according to the presence or absence of the mutation. These results suggested that Trp64Arg mutation in β₃-adrenergic receptor gene is not a major contributing factor for central obesity or change in lipid metabolism in Korean young adults.

한국인 정상교합자의 natural head position시 안모의 연조직에 대한 측모두부방사선학적 분석

강승구,이영준,박영국 대한치과교정학회 2003 대한치과교정학회지 Vol.33 No.5

이 연구의 목적은 한국인의 연조직 측모두부방사선학적 기준치를 설정하고, 이를 성별간, 인종간 비교하여, 한국인의 치아안모 변이를 위한 교정적 진단과 치료계획을 확립하기 위한 한 가지 기준을 제안하고자 하는데 있다. 저자들은 균형 잡힌 안모를 가진 젊은 한국인 성인 남녀 각 27명, 20명을 선발하였다. 이들의 평균연령은 남자 23.8±2.6세, 여자 22.5±1.7세였다. 높은 신뢰성과 재현성을 가진 natural head position에서 측모두부방사선사진을 촬영하였고, 필름을 트레이싱한 뒤 Arnett등이 소개한 분석요소들을 이용하여 계측하였다. 그 결과를 독립 모수 검정을 통하여 한국인 남녀를 우선 비교하였고, 한국인 남녀 각 군을Arnett등이 제시한 백인들의 남녀 기준치와 비교하였다. 그 결과로부터 다음과 같은 결론을 얻을 수 있었다. 한국인 남자는 한국인 여자보다 전반적으로 비후한 하안모 연조직과 작은 비순각, 긴 안면고경, 깊은 측모상, 그리고 더 돌출된 하안모를 가지고 있었다. Arnett등이 제시한 백인 기준치와의 비교에서는 한국인이 남녀 모두에서 덜 노출되는 상악 절치를 제외하고는 전반적으로 더 긴 안면 길이를 보였고, 더 짧은 측모 깊이를 보였다 또한 두 인종 모두상악 구조물들은 TVL에서부터 유사한 수평적 위치에 있었으나, 한국인 군에서 유의성있는 상악-하악간 전후방적 거리차를 나타내었다. 이는 한국인이 백인에 비해 기준선인 TVL로부터 하악 구조물들이 상대적으로 더 후퇴되어 있음을 의미한다고 할 수 있다. 균형잡힌 안모를 가진 개체의 안면각은 성, 인종에 상관없이 170도 전후를 나타내어 보편적으로 신뢰할 만한 평가항목으로 사료되었다. This study was performed to establish Korean soft tissue cephalometric norms, to compare the norms between sexes and between races, and then to suggest a guideline to execute orthodontic diagnosis and treatment planning for dentofacial deformities in Korean. Young Korean adults were selected. They were 27 males (23.8±2.6-year-old) and 20 females (22.5±1.7-year-old) who had harmonious facial balance. After taking lateral cephalograms under the natural head position which is widely known as a highly reliable and reproducible reference position, films were traced and analysing factors were measured as introduced by Arnett et al. Comparisons were done between male and female groups and between Korean and Caucasian groups using unpaired t-test. From the results it was concluded that Korean male had generally thicker lower facial soft tissue and smaller nasolabial angle, longer facial height, deeper facial depth, and more protrusive lower face than Korean female. From the comparison with Caucasian norms adopted from the research of Arnett et al., both Korean male and female showed longer facial lengths generally except less exposed maxillary incisor, and shorter facial depth than Caucasian counterparts. Also, both races showed similar horizontal position of maxillary structures from TVL (true vertical line), but there were more significant anteroposterior differences of maxilla-mandible in Korean groups. These results mean Korean had relatively more retruded mandibular structures from the reference line, TVL. Individuals who had harmonious facial balance showed similar facial angle, more or less 170 degree, regardless of sexes or races.

야뇨증 환아들의 심리사회적 특성에 대한 다기관 연구 : 행동 및 정서 문제를 중심으로

조수철,김재원,신민섭,황준원,한상원,박관현,이상돈,김경도,김건석,서홍진,이유식,정재용,김영균,문두건,남궁미경,한창희,조원열,김영식,배기수,이종국,정우영,신의진 大韓神經精神醫學會 2005 신경정신의학 Vol.44 No.6

Objectives : The aim of this study was to examine the behavioral and emotional problems associated with nocturnal enuresis in Korean children. Methods : Three hundred eighteen children with nocturnal enuresis, together with their parents, completed the Child Behavior Checklist (CBCL), Disruptive Behavior Disorder Scale according to DSM-IV (DBDS), Children's Depression Inventory (CDI), State-Trait Anxiety Inventory for Children (STAIC), and Piers-Harris Children's Self-Concept Scale (PHCSC). Ninety-three normal students were selected as the control group. Results : Compared to the normal control group, the mean scores with regard to the withdrawn, social problems, attention problems, delinquent behavior, aggressive behavior, externalizing problems and total problems profiles were significantly higher in the nocturnal enuresis group according to the CBCL results. The nocturnal enuresis group also scored significantly higher in the ADHD and ODD profiles of the DBDS. The nocturnal enuresis group was more depressed and anxious than the control group according to the results of the CDI and STAI. The mean score of the PHCSC was significantly lower in the nocturnal enuresis group when compared to the normal control group. Conclusion : The results of this study suggest that children with nocturnal enuresis in Korea have clinically relevant behavioral and emotional problems. The findings support the link between nocturnal enuresis and psychopathology in Korean children.

쇼핑몰 웹 사이트의 이동경로 분석에 관한 연구

고국화,권영직 대구대학교 정보통신연구소 2012 情報通信硏究 Vol.9 No.1

본 논문은 “skin79”, “isoi”, “lamente” 3개의 쇼핑몰 웹 사이트를 대상으로 웹 로그 분석을 통한 웹페이지에 중점을 두어 이동경로 분석을 하였다. 이경로 분석은 에이스카운터(www.acecounter.com) 사에서 제공하는 웹 로그 전문 분석 프로그램인 EC 버전을 이용하였다. 연구 결과는 다음과 같다. 이동경로 깊이에 있어서는 2~4개의 웹 페이지를 이용하는 수가 3개의 쇼핑몰 모두에서 가장 많았다. 이는 이용자들이 원하는 웹 페이지가 2~4페이지 이내에 있음을 알 수 있었고, 쇼핑몰 웹 사이트를 개발할 시 웹 페이지를 불필요하게 너무 많이 구성할 필요가 없음을 의미한다. 또한 쇼핑몰 웹 사이트의 이동경로 분석에 있어서도 가장 많이 찾는 웹 페이지 경로를 보면 4􍿢5개 이하가 많았다. 이는 쇼 핑몰 웹 사이트를 개발할 시 웹 페이지를 4~5개 이하로 구성하는 것이 효과적임을 의미한다. In this paper, we conducted research about path analysis by focusing on a web page through web log analysis. The targeted shopping mall web sites were “skin79”, “isoi”, and “larnente”. EC version software provided by the AceCounter company in Korea was used for path analysis. The research results show that the number of using 2 to 4 web pages on 3 shopping mall web sites was the most common. This means that web pages users wanted to visit belonged to 2 to 4 web pages. Our research also indicates that the number of path analysis were less than 4 to 5. This implies it is effective to compose less than 4 to 5 web pages for shopping mall web sites.

韓國語文의 誤謬 柚出을 위한 形態素分析 알고리즘

權寧淡,李鍾國 嶺南大學校 基礎科學硏究所 1992 基礎科學硏究 Vol.12 No.-

In the paper, we proposed a phoneme split algorithm and a morpheme analysis algorithm for auto-checking of ill-recognized character in Optical Korean Character Recognition System. The complexity of the problems asspciated with character recognition suggests that the system should include Post Processing. Through the two algorithms proposed in this paper, we could pick out ill-recognized character efficiently. So, we believe firmly that our algorithm will be available for correction of ill-recognized character using Dictionary Information.

β-carotene과 Protein-bound polysaccharide(PS-K)가 악골 이식암에 미치는 영향에 관한 실험적 연구

어영선,조한국 慶熙大學校 齒科大學 1993 慶熙齒大論文集 Vol.15 No.1

The purpose of this study was to evaluate the inhibitory effect of 03-carotene and PS-K on the oral transplanted tumor by the transplantation of Sarcoma 180 ascite tumor cells in the bone of incisor tooth germ region of the right mandible. Three week-aged 56 male mice(ICR), weighing 20gm, were devided to 4 experimental groups and 2 control groups. Experimental group 1(12 mice) was transplanted 0.05ml Sarcoma 180 ascite tumor cells per a mouse with 25 Gauge syringe. Group 2(12 mice) was supplied orally 3 times per week with 1-2m1(3-carotene that was dissolved in soybeam milk after transplantation of Sarcoma 180. Group 3 (12 mice) was administered orally 3 times per week with 2m1 PS-K solution that was dissolved in soybeam milk at a dosage of lgm/200ntl after transplantation. Group 4(12 mice) administered 0-carotene and PS-K with the same method. Control group 5(6 mice) was administered 0-carotene and PS-K only and group 6(2 mice) was untreated control. Five mice of each experimental group and 1 mouse of group 5 were sacrificed at 4, 6, 8, 10, 12, 14 days after experimentation. Then the mandible was removed, fixed in 10°N-Formalin and decalcified in 5% nitric acid. And embedded in paraffin; sectioned to 4― 6?m thickness, and stained with Hematoxylin and Eosin, Masson's trichrome and Van Gieson by the usual method; The results were as follows 1. Sarcoma 180 transplanted group revealed inflammatory reaction, degeneration and necrosis of transplanted region, located at 4 days, active malignancy of tumor cells at 6 days, infiltration into the alveolar bone and the periodontal membrane at 8 days, infiltrative proliferation into the periapical portion, adjacent muscular tissue, salivary gland and deep jaw bone at 10, 12 days. 2. The growth of the transplanted tumor cells was inhibited slightly in 0-carotene administered group, morelyinhibited in PS-K administered group and markedly inhibited in 0-carotene and PS-K combined group. 3. There are marked infiltration of lymphocytes due to exudative inflammatory reaction in the adjacent tissue to the transplanted tumor cells. 4. Control group were administered 0-carotene and PS-K only, revealed congestion of blood vessels at 4 days, edematous and hemorrhagic features at 8, 10 days.

석탄폐석 및 광재의 유해물질 침출특성 연구

우영국,강성환,임재명,한동준,김병욱 강원대학교 석재복합신소재제품연구센터 1996 석재연 논문집 Vol.1 No.-

광산에서 배출되는 광재폐기물은 산과 계곡에 투기 또는 매립되어 강우등에 의하여 주변 소하천을 오염시키고 있다. 따라서 본 연구는 광재의 물리적특성과 이화학적 특성을 조사하고 회분식과 칼럼식실험을 수행하여 오염물질의 침출특성을 고찰하고자 하였다. 실험결과, 다음과 같은 결론을 얻을 수 있었다. 1) 광재는 점토질 및 실트질의 크기를 지니고 있으나 점착력과 소성적 성질이 없는 사질토의 특성을 지니고 있다. 2) 광재의 투수계수는 대부분 10(???)³-10(???)cm/sec의 범위이며, 일반 사질토의 투수계수보다 낮음을 알 수 있었다. 3) 회분식과 칼럼식 용출시험의 결과, 대상 광산의 광재폐기물 일부에서 기준치 이상의 중금속농도가 침출되었으며, 이에대한 방지대책의 심각성을 알 수 있었다. 4) 광재 폐기물의 칼럼식 용출시험 결과 kg폐기물 당 인공강우 투여량 비가 증가할수록 침출수의 중금속 및 유해물질 농도는 크게 감소되어 어느정도 진행된 이후부터는 대부분 일정한 농도가 유지되나, 산성강우시 침출정도 및 침출시간은 지속되는 것을 알 수 있었다. 5) 광재는 많은 중금속과 유해물질을 함유하고 있으나 양적인면에서 자원화의 가치가 높을 것으로 판단된다. 따라서 광재내의 자원회수, 건설 재료등의 재활용및 자원화 연구가 필요하다. Tailing wastes producedat metal mines have been disposed of by dumping or landfiling in depression. Mine drainage developed at pile of the tailing wastes has high concentrations of various kinds of heavy metals and harzardous materials, and these contaminants are leached out from the tailing wastes by water infiltration or when they collapse. In this study, both batch test and column test were performed in order to investigate the physical and leaching characteristics of tailing wastes. The batch test results were compared with those by EPT and DLT, and column test was carried out at acidic and neutral pH ranges. The results showed that high concentrations of heavy metals and sulfate were contained in the leachate of the some tailing wastes. In column test, levels of heavy metals in the leachate produced during the initial rainfall period were found higher.

장간막축성 위염전증 1례

김영남,김은화,최용우,이용웅,박찬국 조선대학교 2000 The Medical Journal of Chosun University Vol.25 No.2

Gastric volvulus is a rare disorder of stomach, in which stomach twists upon itself. This condition has two types(organoaxial and mesenteroaxial) that can be classified according to axis of rotation, and organoaxial type is more common. Clinical features are suddenly severe abdominal pain in acute onset and nonspecific vague abdominal discomfort in chronic form. It can be diagnosed by barium study and endoscopy with clinical symptoms. The treatment of patients with gastric volvulus has endoscopic reduction or surgical correction of the underlying abdominal pathologic feature predisposing to volvulus formation. We recently experienced a case of chronic onset of gastric volvulus which was confirmed by endoscopy and barium enema. It was failed by endoscopic reduction and corrected completely by laparoscopic gastropexy.