성인에서 발생한 발진성 가성 혈관종증

서상희 ( Sang Hee Seo ),장호선 ( Ho Sun Jang ),목혜수 ( Hye Soo Mok ),김성준 ( Sung Jun Kim ),김병수 ( Byung Soo Kim ),김문범 ( Moon Bum Kim ),오창근 ( Chang Keun Oh ),권경술 ( Kyung Sool Kwon ) 대한피부과학회 2007 대한피부과학회지 Vol.45 No.8

Background: Eruptive pseudoangiomatosis (EPA) is a rare, benign, spontaneously regressing childhood exanthem. It is characterized by the sudden onset of several bright red angioma-like papules surrounded by pale halos with a distinct histopathology from true angiomas. Objective: This study was performed to evaluate the clinical and histopathologic characteristics of EPA occuring in adults. Methods: Ten adult patients who visited Pusan National University Hospital and Mok Hye-SooㆍJang Ho-Sun Dermatology Clinic from March 2005 to September 2006 were evaluated. We prospectively evaluated the sex, age, onset season, past medical history including immunosuppressive abnormalities, systemic disorders and other diseases including allergies. We also investigated the relations of mosquito biting, patients` occupations and outdoor activities to occurrence of EPA. In addition, simultaneous occurrence in family members, the clinical, histopathologic, laboratory findings, disease courses and responses to treatment were evaluated. Based on medical records, photographs and pathologic slides, we retrospectively diagnosed another 20 EPA patients suspected as insect bite from October 2003 to March 2005. The same questions were inquired as for the 10 patients who prospectively underwent evaluation. Results: In the study, female predominance (76.7%) was observed and the average age of onset was 54.2 years. Interestingly, there was no child patient during the period of study. Multiple, 2∼5 mm sized, red angiomatous papules surrounded by pale halos occurred on exposed areas such as the arms (86.7%), legs (50%), and face (46.7%), although it could also occur to a non-exposed area. EPA occuring in adults usually appeared in summer (80%). The mean disease duration was 3.4 weeks. Although EPA spontaneously regressed, it had the potential of recurrence (46.7%). Histopathologic findings showed dilated dermal blood vessels without the evidence of increase in numbers, and perivascular lymphocytes infiltration. Inside the lumen of dermal blood vessels, plump endothelial cells were found. Conclusion: EPA occuring in adults usually happened to exposed sites in summer, so it can be misdiagnosed as insect bite. We suggest that dermatologists should be concerned about EPA in adults and conduct further investigation to have a better understanding of the disease. (Korean J Dermatol 2007;45(8):797∼803)

소아 환자에서 Er:YAG Laser를 이용한 우식 병소의 처치

장은영,이상호,이창섭 대한소아치과학회 2000 大韓小兒齒科學會誌 Vol.27 No.4

1960년대 최초로 Ruby 레이저의 개발 이래로, 치과용 드릴인 고속용 핸드피스를 대신해 치아 경조직 삭제에 레이저의 적용이 시도되어져 오고 있는데, 최근 Er:YAG 레이저의 개발로 경조직 삭제시 이들의 삭제 효능과 치질의 온도상승에 관한 연구에 관심이 증대되었다. 과거 여러 종류의 레이저에 비해 2.94um Er:YAG 레이저는 파장의 특성이 치질의 수분과 하이드록시아파타이트에 매우 흡수율이 높아 치질내 수분이 고열에 의해 증기화되어 폭발하므로써 치질이 제거되므로 crack이나 탄화된 부위가 없이 와동 변연부가 명확하고 깨끗하며 효과적인 치질의 삭제가 가능하다. 삭제시 치질내 온도 상승이 레이저의 경조직 적용시 고려되는 중요한 문제점으로 대두되나 이는 물분사와 적적한 레이저 parameter의 사용으로 열 발생을 최소화하면 치수 손상이 발생하지 않는다고 보고 된다. 본증례는 치수에 근접하지 않은 우식 병소의 처치를 주소로 내원한 소아 환자들에 있어서 Er:YAG 레이저 적용시 기존의 고속용 삭제 기구에 비해 소음과 진동이 적어 소아 환자들의 치과 치료에 대한 공포감이나 동통을 최소로 하며 적절한 레이저 parameter와 물분사의 사용으로 치수에 대한 열자극이나 치질의 변색과 같은 임상적인 문제를 초래하지 않고 효과적으로 우식 병소의 제거 및 와동 형성을 시행할 수 있었다. The lasers have been used in dentistry for more than 30 years and the application of lasers for drilling dental hard tissue has been investigated since the early development of lasers. Recently, the Er:YAG laser was invented for hard tissue ablation. The Er:YAG laser, having a wavelength of 2.94um, is highly absorbed in both water and hydroxiapatite, leading to a very effective material for hard tissue removal by bursting off the solid tissue component : that is, enamel and dentin are removed by the Er:YAG laser by water vaporization and microexplosion, without any melting of inorganic tissues. Therefore, the Er:YAG laser produced round craters with well defined margins and the surrounding tissues had no cracks and no charring. When used for cavity preparation, pulpal damage should not occur if hear buildup is minimized by careful selection of exposure parameters and by use of a water spray. The present study demonstrated that the Er:YAG laser cut the tooth substance adequately for composite resin restoration, without having undesirable side effects such as harmful effects on the pulp, discoloration or cracking etc. Also, the child patients were well cooperative during laser treatment mainly because of little noise, lesser vibration and minimal pain compared to conventional means of cavity preparation.

외배엽 이형성증 환자의 치험례

장향길,이상호,이난영 大韓小兒齒科學會 2009 大韓小兒齒科學會誌 Vol.36 No.4

외배엽이형성증(Ectodermal dysplasia, ED)은 외배엽에서 분화되는 조직에 다양한 선천적 이형성이 나타나는 유전적 질환이다. 외배엽이형성증 중에서 저한성 외배엽이형성증(Hypohidrotic ectodermal dysplasia, HED)은 가장 흔한 유형으로 주로 모발, 손톱, 치아, 그리고 피부에 이형성을 보인다. 남성에서 여성보다 증상이 심하게 나타나며, 보인자인 여성은 정상으로 보이는 경우가 많다. 이러한 환자를 위한 치료는 개인마다 차이가 있으나, 다수의 치아상실로 인한 저작 및 발음기능의 저하 뿐만아니라 심미적이지 못한 안모로 사회적, 정서적 우울감에 빠지기 쉬우므로 조기치료가 요구된다. 본 증례에서는 조선대학교 치과병원 소아치과에 내원하여 상악의 부분무치증 및 하악의 무치증을 보이는 HED로 진단된 10세 남아에서 의치제작을 통해 저작력의 증가, 발음기능의 회복 및 안면고경의 증가로 심미성이 개선된 좋은 결과를 보였다 Ectodermal dysplasia is a genetic disease which shows various congenital dysplasias in tissues differentiated from the ectoderm. As the most common type of the ectodermal dysplasia, hypohidrotic ectodermal dysplasia(HED) shows dysplasia mainly in the hair, fingernails, teeth and the skin. Symptoms are more severe in males than in females and heterozygous females are usually normal showing no symptom. The treatment for these patients differ according to individuals, but since patients can easily become depressed socially and emotionally due to a decrease in mastication and speech function caused by multiple loss of teeth as well as some aesthetic problems, an early treatment is required. In a case, with a 10 years-old boy diagnosed with HED which shows partial edentia of the maxilla, and the edentia of the mandible in the pediatric dentistry department of the Chosun University Dental Hospital, a fabrication of denture resulted in the recovery of mastication and speech function and aesthetic improvement due to an increase of the face height.

Flavobacterium meningosepticum에 의한 균혈증 1예

장성원,유진홍,진승원,김선우,김연식,박순민,이대훈,최민호,최주연,신완식,강문원,강지민 대한화학요법학회 1997 대한화학요법학회지 Vol.15 No.1

1996년 6월 카톨릭대학교 부천성가병원에 뇌경색으로 입원했던 61세 남자 환자의 혈액에서 Flavobacterium meningosepticum을 분리하였다. 환자는 폐렴을 동반한 패혈증의 예로 ceftriaxone과 metronidazole을 투여하였으나 입원 48시간만에 사망하였다. Flabovacterium meningosepticum is a rae cause of nosocomial infection which shows multi-drug resistance. It mainly invades patients with impaired immunity. Recently, we experienced a case of F. meningosepticum bacteremia in a patient with chronic debilitated state owing to stroke. The clinical progress was so rapid that he died within 48 hours. Blood culture revealed F. meningosepticum which showed characteristic yellow colony in blood agar plate.

폐기물 성상과 매립방식에 따른 침출수 특성

성낙창,김은호,문추연,김정권,장성호,김수생,박출재 동아대학교 환경문제연구소 1996 硏究報告 Vol.19 No.1

In this study, we can be obtained the following conclusions about the characteristics of leachate with waste compositions and landfill methods. pH shows a tendency to increase in E. landfill, because NH₃ is created by anaerobic degradation and dissolved in leachate. The concentrations of BOD and COD become different, In case of E. landfill, food of combustible is H. & S. landfill and then SS is high in concentration. According to passed time, T-N is high in concentration, but T-P shows a similar tendency. Heavy metals of leachate is lower than threshold concentrations. If leachate is treated biologically, microbes are not inibitory.

지식 기반 교육컨테츠 저작시스템

장재경,김호성 한국컴퓨터교육학회 2004 컴퓨터교육학회 논문지 Vol.7 No.2

e-Learning에서 교수-학습자들 간에 형성되는 지식들을 체계적으로 관리하여 효과적인 교수-학습을 수행할 목적으로 교수자들이 교수 설계 이론에 따른 다양한 강의들에 교육 컨텐츠를 보다 쉽게 저작할 수 있는 시스템을 개발하였다. SCORM 표준에 따라 학습객체 간 관계를 설정하여 저작된 컨텐츠는 학습자가 학습내용을 개념화하는데 도움을 줄 것이다. 시맨틱 웹의 RDF를 적용하여 학습객체 간의 관계를 설정함으로써 지식맵을 구성하였고, 교수자가 해당 분야에서 사용되는 단어를 등록하여 일종의 어휘사전을 만들 수 있는 온톨로지를 도입하였다. 학습자의 이해도와 성취도를 고려한 개별학습을 제공하기 위하여 도입된 상호작용점을 따라 학습자마다 개별적인 학습맵이 구성되어 학생 개인의 학습활동과 이해도를 평가할 수 있다. For the purpose of an effective instruction-learning process by systematic management of knowledge between instructor and learner in e-Learning, we have developed the authoring system in which the instructor is able to author easily on various lecture frames according to the instructional design theory. The authored contents with the relations among the learning objects based on SCORM standard would help learner to conceptualize the contents. A knowledge map is constructed on the relations among the learning objects using RDF of the semantic web. We introduce the ontology in which the instructor can make a dictionary of terminology by registering the words of the teaching area. The learning activity and comprehension of students can be assessed using each student's learning map along the interaction points which are introduced to present the individual learning by considering each student's capacity of understanding and achievement.

편심 압축력을 받는 스테인리스 원형강관 기둥의 곡률형상에 따른 좌굴내력에 관한 실험적 연구

장호주,서성연,양영성 대한건축학회 2005 大韓建築學會論文集 : 構造系 Vol.21 No.3

This study is a series of experimental investigation on the buckling strengths of eccentrically compressed cold formed stainless steel CHS(circular hollow section) columns. The principal parameters in this study are slenderness ratios( λ=30, 50, 70) and magnitude of eccentricity e(0, 2.5, 5.0, 7.5, 10㎝) on the direction of end moment. The direction of end-moment means 3 different bending moment distributions. Objectives this study are to obtain the maximum loads and moments by performing an experimental work and to compare the experimental behaviors with the design standard curves, AIK-LSD and AISC-LRFD, AIJ-LSD, SIJ-ASD curves. The ultimate buckling strengths and bending moments of circular section members are evaluated by a method in accordance with design standard curves. Therefore this paper attempts design standard for the use of these stainless steel columns as structural compression members. The numerically obtained ultimate buckling strengths and bending moments design standard curves of beam columns show a reasonably good agreement with the available experimental results.

축력과 양단 대칭모멘트를 받는 스테인리스 원형강관 기둥의 좌굴내력에 관한 실험적 연구

장호주,서성연,양영성 대한건축학회 2005 大韓建築學會論文集 : 構造系 Vol.21 No.3

This study is a series of experimental investigation on the buckling strengths of eccentrically compressed cold-formed stainless steel CHS(circular hollow section) columns. The principal parameters in this study are slenderness ratios(L_(k)/r = 30, 50, 70) and magnitude of eccentricity e(0, 2.5, 5.0, 7.5, 10㎝) on the symmetrical end moment. Objectives this study are to obtain the maximum loads by performing an experimental work and to compare the experimental behaviors with analytical results. The ultimate buckling strength of CHS members are evaluated by a numerical method in accordance with the axial force-bending moment(P-M) interaction curves. The behavior of each specimen is displayed in the form of moment angle(M- θ) relationship. The numerically obtained ultimate buckling interaction curves of beam columns show a reasonably good agreement with the available experimental results of slenderness ratios(L_(k)/r = 30, 50). But experimental results of slenderness ratios 70 were below M-P interaction curve.

돌소리쟁이를 섭식하는 좀남색잎벌레의 생태에 관하여

장석원,이선영,박영준,조영호,남상호 대전대학교 기초과학연구소 2002 自然科學 Vol.13 No.1

유럽과 일본 등지에서 Biological control agent로 사용하는 Gastrophysa屬의 좀남색잎벌레(Gastrophysa atrocyanea) 생활사를 실내 사육을 통해 고찰하고 야외 조사를 통해 난괴의 크기 및 부화율을 조사하였다. 각 성장단계별 경과일수는 알 3.19±0.39일, 1령 유충 2.28±0.77일, 2령 유충 2.10±0.48일, 3령 유충 4.90±0.72일, 번데기 3.80±0.49일로 총 16.27±1.11일 만에 성충으로 우화하였다. 야외에서 돌소리쟁이(Rumex obtusifolius)의 잎 뒷면에 산란된 좀남색잎벌레의 난괴를 채집하여 조사한 결과, 난괴 당 알수는 32.04±12.02개로 조사되었다. 부화는 치음 산란한 날(D)로부터 평균 3일이 소요되며 첫날(D+3) 부화율은 80.6%, 둘째날(D+2) 부화율은 9.3%, 셋째날(D+3) 부화율은 0.68% 등 총 부화율은 91.02%로 매우 높게 나타났다. Gastrophysa atrocyanea. a chrysomelid that feed on Rumex spp., introduced Europe and Japan for biological control agent of Ruinex obtusifolius. Life cycle investigated in vitro; clutch size and hatching rate studied in field. In vitro ovipositied a total of 5 egg mass containing 197(n= 5 in May, 2001). The development time of immature stage of G. atrocyanea is Egg →lst Larva 3.19± 0.39 days, 1st → 2nd larva 2.10±0.48days, 2nd -3rd larva 4.90±0.72days. 3rd - + →pupa 3.80±0.39day-s and total 16.27± 1.11days. In 1st. 2nd and 3rd day, Hatchability of G. atrocyanea was 80.6%. 9.396, 0.68% respectively. Total hatchability of G. afrocyanea was 90.58%.

스포츠센터 직원들의 의사소통이 직무만족에 미치는 영향

장호성,노동연 龍仁大學校 體育科學硏究所 2002 體育科學硏究論叢 Vol.12 No.1

An individual person has pursued the realization of his or her goal through an organization. Recently, there has been a tendency to make a study of correlational relationship of communication to other variables including job satisfaction. The purpose of this study was, accordingly, to examine the effect of communication on job satisfaction in sports center. The employees of sports centers in Kyonggi province were selected as a mother group. The subjects in this study were 300 employees who were selected by random sampling form 14 sports centers. And response form 257 subjects were chosen for analysis, except 43 who gave poor responses of weren't surveyed completely. The collected data were handled by reliability analysis, t-test, one-way ANOVA, scheffe, correlation analysis and regression analysis. The findings of this study were as follows; First, the communication of the sports center employees investigated wasn't different according to personal characteristics, including gender, age, education background, position or career. Second, the job satisfaction of the subjects didn't vary with gender, age, position or career, among personal characteristics. Yet educational background made a difference to job satisfaction. Third, the upward and horizontal communication of the subjects, among communication types, exerted a positive influence on jon satisfaction.