소아나 협조가 힘든 환자에서 봉합사 제거가 쉬운 봉합법

남수봉,오흥찬,강철욱,최수종,배용찬 부산대학교 병원 암연구소 2009 부산대병원학술지 Vol.- No.25

鷄龍山의 水棲昆蟲 群集에 관한 硏究

남상호,조영호,박영준,한용구,이정수 대전대학교 기초과학연구소 2002 自然科學 Vol.13 No.2

천황봉에서 발원하여 산간 계류를 형성하고 흐르다가 유성천과 합류해 금강으로 유입되는 계룡산 동학사 계곡의 수선곤충 군집을 조사한 결과 총 5목 17과 37종이 출현하였다. 이중에서는 하루살이류가 6과 14종으로 가장 많이 출현하였으며, 현존량은 파리류가 전체 1,165개체중 569개체(48.84%)로 가장 높게 나타났다. 전체 우점종은 꼬마하루살이와 깔다구류로 0.15의 우점도지수를 기록하였다. 종다양도는 제 4지점인 남매탑 계류의 합류점이 0.93으로 가장 높았고, 제 1지점인 은선산장 위 부근이 0.09로 낮게 나타났다. 각 지점별 오수생물계열은 초강부수성-강부수성으로 매우 낮게 조사되었다. Aquatic insect communities were investigated in a mountain streams of YIt. Iiyeryong1 one of the central areas of Korea, from March to September, 2002. As a result, 37 species of aquatic insects in 17 families and in 6 orders appeared during the study period, the order Ephemeroptera and Diptera of which were the most appeared. Ephemeroptera was consisted of 14 species of 6 families, and Diptera was consisted of 589 individuals(48.84%j of total individual nun-her. Dominant species was Baetis ther-micus and the subdominant species was Chironmidae sp.. Dominant species index of Baetis thermicils and Chironmidae sp. was O.15 The highest species diversity index was observed of site 4 as 0.93 and the lowest species diversity index was observed of site 1 as 0.09. Dominance indices ranged between 0.15 and 1.00 while diversity indices between 0.09 and 0.93. In relation to species diversity indices, Mt. Iiyeryong streams were determined as Isosaprobity-Polysaprobity area. In general, it is inferred from the aquatic insect community that typical mountain streams of Korea are low.

치수유래 구심성 신경섬유의 삼차신경 감각핵군에서의 연접특성

배용철,이은희,최민기,홍수형,김현정,남순현,김영진 대한소아치과학회 2001 大韓小兒齒科學會誌 Vol.28 No.2

일차연접부위에서 악안면 영역에서 유래하는 유해자극의 전달 및 처리기전을 이해하고자 horseradish pe개xidase를 치수지배 구심성 신경섬유를 표식한 후 연수후각에서 미세구조 및 연절 양상을 분석하여 다음과 같은 결과를 얻었다. 표식종말은 소수의 큰 치밀소포가 관찰되는 종말 (S형) 및 다수의 치밀소포를 함유하는 종말 (LDCV형)등 2종류로 분류할 수 있었다. S형 및 LDCV형 표식종말의 연접양식은 유사하였으며, 다수의 표식종말이 1개 혹은 2개의 neurofile과 연접을 이루어 대단히 단순한 연접양상을 보였다. 표식종말은 가지돌기체 보다는 다수의 가지돌기가시와 연접을 이루는 빈도가 높았다. 표식종말이 세포체 및 이에 인접한 근심부 가지돌기와 연접하는 경우는 드물었으며, 소수의 표식종말에서 p-ending과 연접하는 경우를 보였다. 표식종말의 체적, 표면적, 사립체의 체적, neurofile과 접하는 면적, 활성부위의 면적, 단위표식종말당 연접소포의 수 및 연접소포의 밀도등은 넓은 범위의 계측치를 나타내었으며, 이는 5명 및 LDCV형 표식종말 사이에 유의한 차이가 없었다. 이상의 결과로 미루어보아 연수후각에서 치수유래 구심성 신경섬유 종말의 연접양식은 고유의 특징을 보이며 이는 신경회로의 기능과 밀접한 상관관계를 가지는 것으로 판단되었다. Little is known about processing mechanism of pain sensation of the oral cavity at the 1st synapse of trigeminal sensory nuclei. Serial ultrathin sections of tooth pulp afferent terminals, identified by the transganglionic transport of 1% wheatgerm agglutinin conjugated horseradish peroxidase, were investigated wih electron microscope. Quantitative ultrastructural analysis was performed on digitizing tablet connected to Macintoshi personal computer (software: NIH Image 1.60, NIH, Bethesda, MD). Labeled boutons could be classified into two types by the shapes of containing vesicles : S bouton which contained mainly spherical vesicles (Dia. 45-55 nm) and few large dense cored vesicles (Dia. 80-120nm), and LDCV bouton, which contained spherical vesicles as well as large number of large dense coredd vesicles. Most of the parameters on the ultrastruotural characteristic and synaptic organization of labeled boutons were similar between S and LDCV boutons, except shapes of containing vesicles. Majority of the labeled boutons showed simple synaptic arrangement. The labeled bouton were frequency presynaptic to dendritic spine, and to a lesser extent, dendritic shaft. They rarely synapsed with soma and adjacent proximal dendrite. A small proportion of labeled boutons made synaptic contacts with presynaptic pleomorphic vesicless containing endings and synaptic triad. Morphometric parameters of labeled boutons including volume and surface area, total apposed area, mitochondrial volume, active zone area, vesicle number and density showed wide variation and theme were not significantly different between S and LDCV boutons. The present study revealed characteristic features on ultrastructure and synaptic connection of pulpal afferents which may involved in transmission of oral pain sensation.

치아 순면 형태가 측색 기기를 이용한 치아 색상 측정 결과에 미치는 영향

최용진,박수정,조현구,황윤찬,오원만,박병주,황인남 대한치과보존학회 2007 Restorative Dentistry & Endodontics Vol.32 No.5

WWW 기반의 원격교육시스템 설계 및 구현

박남숙,장기화,곽난희,이수현,우용태 國立 昌原大學校 精報通信硏究所 1998 精報通信論文集 Vol.2 No.-

The purpose of this paper is to develope a distance education that would be a courseware for a specific object, which can be available for student to learn the necessary knowledge or function, with no restriction of time or place, using WWW and Oracle DBMS. The distance education was designed in this paper consists of bulletin board, subject information, lecturing schedule, online instructions, questions and answers, submit and confirmation of reports, evaluation of lecturing, reference sites, chatting and discussion room, and data bank. The distance education coupled by WWW and database will change the educational form from one-direction to bi-direction between a teacher and the students. This can also provide a multimedia information to the students through WWW environment with convenient user interface. Those benefits made it possible to offer animated audio-visual materials and search for the information concerned through a hypertext technique. Besides, various kinds of informations were stored at database to increase an effectiveness in managing data. Since both teacher and students, are easy to add new information using the process of instruction to the database, the amount of the stored information in the distance education can be expanded effectively.

비·부비동 종양의 신생혈관 형성에서 COX-2 및 VEGF의 역할

도남용,박성용,조성일,윤혁수,박선홍,박영균,권대승,임성철 조선대학교 2003 The Medical Journal of Chosun University Vol.28 No.1

Background and Objectives : COX-2, the inducible form of cyclooxygenase(COX), is upregulated in transformed cells and in malignant cells, which have important roles in promotion of colorectal carcinogenesis, invasiveness and angiogenesis. Vascular endothelial growth factor(VEGF) may act as endothelial cell mitogen in various cancer tissues. It will increase tumor growth and angiogenesis. Aims of this study were to asses COX-2/VEGF expression and it's clinical correlation in sinonasal tumors and to investigate the effects on angiogenesis also. Materials and Method : The study samples were obtained from surgical removal of 27 cases of inverted papilloma(IPs), 5 cases of IP with malignant transformation(IP-MT), 16 cases of Squamous cell carcinoma(SCC) in sinonasal cavity COX-2 and VEGF expressions were assessed by immunohistochemical staining. Synchronism of COX-2/VEGF expression in one tumor cell was demonstrated with double immunofluorescence technique. Results : The expression rates of COX-2 were 37% in IP, 80% in IP-MT and 100% in SCC. The positive rates of VEGF were 29 6% in IP, 100% in IP-MT and SCC. COX-2 and VEGF expressions were increased as tumor progressed, and there is a positive correlation between COX-2 &EGF expressions. All clinical features which were compared are not associated with COX-2 &EGF expressions except malignant change in IP(p=0 028). Synchronism of COX-2/VEGF expressions was noted in all positive immunostaining samples. Conclusion : These findings suggest the role of COX-2 pathway could be involved in sinonasal tumor angiogenesis, which is modulated by VEGF COX-2 may act as autocrine factor in VEGF expression. There is a potential role for selective COX-2 inhibitors in the treatment of these lesions.

세라믹 섬유필터를 이용한 디젤 입자상물질 배출저감에 관한 기초연구

주용남,홍민선,문수호,이동섭,임우택 한국대기환경학회 2003 한국대기환경학회지 Vol.19 No.3

Works were focused on back pressure characteristics of ceramic fiber filter on DPF(Diesel Particulate Filter) system and experiments were performed to select appropriate filter which can filter particulates. Filters were installed on metal-support tube which has openings for exhaust as flow. Ceramic fiber filters with high specific surface area and adequate high temperature strength are commercially available for filtration of diesel particulates and in-situ hot regeneration. Thus, ceramic blanket and ceramic board which are used as insulating media were applied to filter and filteration apparatus was installed on exhaust as line connected to 2.0L diesel engine. Alternating filter structure to adapt DPF system, collection efficiency test of diesel particulates was measured. In case of ceramic blanket, pressure drop was low, caused by the destruction of soft structures. Also, particulate collection efficiency was decreased depending on loading time. In case of ceramic board, structure design was altered to reduce back pressure on DPF system. Structure design was altered to induce Z-flow by making 10mm and 5mm holes on the surface of media. Alteration of 5mm hole showed that media have low back pressure but particulate collection efficiency was 77%, while 10mm hole showed that of 90%.

다중양자 NMR 역학에 관한 연구

김남수,양경승,신용진 조선대학교 기초과학연구소 1999 自然科學硏究 Vol.22 No.1

Studied in this paper is how multiple quantum coherence develops in the anisotropic distribution of dipolar couplings. The magnitude of dipolar couplings was varied with oriented angles. The larger dipolar coupling was, the bigger frequency of multiple quantum coherence was. The multiple quantum coherence is decided with proportion of the magnitude of dipolar couplings. The theory equation for multiple quantum coherence and the magic angle 54.7˚in the solid NMR spectroscopy was verified in our research. The excitation pattern of n-Quantum coherence, which can induce the effective size to characterize spin system, is expected in larger and more complicated spin system for understanding the relation of dipolar coupling and multiple quantum coherence.

VDT작업별 정신사회적 스트레스와 근골격계 장애에 관한 연구

백남종,강종두,주영수,배인근,권호장,박종만,조수헌,김돈규,김재용,최홍렬 大韓産業醫學會 1998 대한직업환경의학회지 Vol.10 No.4

It has been hypothesized that jobs that have both high psychological demands and low decision latitude("job strain") can lead to musculoskeletal disorder. The objective of this study was to test whether job strain was correlated with the presence of work-related musculoskeletal disorder, especially myofascial pain syndrome(MPS). Information on demographic factors, confounders such as household load and taking care of children or not, and scores for decision latitude, job demand, and social support was obtained by self-administered questionnaire, which had been developed in Korean language, by adopting NIOSH instrument and Extended Karasek Model(16 items). All subjects were also examined by rehabilitation medicine specialists for musculoskeletal disorders. Subjects(n=370) could be categorized into 4 groups, these were, housewives(n=89), shipyard CAD workers(n=89), general female workers(n=79; nurses, insurance counselors, public officials, clerks, etc), and telephone directory assistance operators(n=113). Results from univariate analyses indicated that all demographic factors, all confounders, scores for decision latitude and social support were not associated with the risk of musculoskeletal disorder. However, score for job demand was higher in musculoskeletal disorder cases than others. In subgroup analysis, this association was convinced again, in telephone directory assistance operators. Job strain model showed that the group of telephone directory assistance operators was high-stain group, and OR of musculo skeletal disorder was 2.446(95% C. I. : 1.174, 5.096), when comparing this with the low strain group. In conclusion, job strain is a risk factor for work-related musculoskeletal disorder.

주사전자현미경을 이용한 토마토에 발생하는 아메리카잎굴파리(Liriomyza trifolii)의 외부형태적 특징

윤영남,김기덕,박수진,김남성,서미자,채순용 충남대학교 농업과학연구소 2000 농업과학연구 Vol.27 No.1

SEM을 이용하여 아메리카잎굴파리(Liriomyza trifolii)의 암 ·수컷 성충의 외부형태적 특징을 살펴보았다. 더듬이에 있어 감각모의 3가지 형태는 더듬이가는마디(funicle)에서 관찰되었으며, 모상감각기(trlchold sensillum)는 말단 부위가 뽀족한 특징적인 형태를 하고 있고 감각기들 중에서 가장 많이 분포하고 있다. 원추상 감각기(basiconic sensillum)는 길이가 13㎛, 지름이 1.4㎛에서 1.2㎛인 원형곡선형이다. 홈형 감각기(grooved sensillum)는 간상(peg) 끝에서 나온 손 모양을 하고 있으며, 이 모든 감각기들은 후각과 연관되어져 있는것으로 추정된다. 구기는 홉즙형으로 작고 펼쳐진 윗입술(labrum)과 합쳐져서 하나의 연결된 주둥이(rostrum)을 형성하고 있다. 가느다란 한 쌍의 작은턱수염(maxillary palp)은 긴 관 모양으로 각각의 세로로 이어져 있다. 발마디는 5마디로 이루어져 있으며 그 한가운데에는 패드모양의 흡착반(pulvillus)과 가시모양의 발톱사이돌기(empodium)가 있다. 아메리카잎굴파리는 흡착반과 발톱사이돌기에서 미끄러운 표면에 부착할 수 있는 물질을 분비한다. 수컷의 생식기는 매우 복잡하며 삽입구(aedeagus)는 생식기관으로서 가장 일반적인모양이다. 반면에 암컷의 생식기는 상대적으로 간단한데 이 구조는 외부로 돌출된 관모양이었다. 또한 이러한 결과를 이미 발표된 다른 여러 종의파리와 비교하였다. The external morphology of male and female of Liriomyza trifolii (Burgess) was studied using the scanning electron microscopy (SEM). Three types of sensilla were identified on the funicle of antennae. The trichoid sensilla were most conspicious and distributed with a characteristic sharp structure at the apical end. Basiconic sensilla were showed distal curvature about 13㎛ long and 1.2㎛ to 1.4㎛ in diameter. Grooved sensilla were showed a finger-like projections at the peg apex. The function of these sensilla likely to be olfactory. The mouthparts were adapted for sucking food, and formed a elongate rostrum which was incorporated with labrum. The labrum was a small and flap-like shape. The slender and paired maxillary palp seemed to combine with each other lengthwise to long tube. The tarsus typically consisted of 5 segments, which might be variously modified, principally by thickening or flattening. The segment healed a pair of claws. Beneath the claws, there was a pair of pad-like pulvillia and a bristle-like median empodium. L. trifolii secreted on the pulvillus and empodium an adhesive substance that enable them to cling to smooth surfaces. Male terminalia was complicated. The name 'aedeagus' seemed the best available general term for the copulatory organ, otherwise, female terminalia was usually relatively simple. This structure was reduced and formed a telescopic, eversible, and tubular ovipositor.