서울의 Penicillinase Producing Neisseria Gonorrhoeae 발생빈도(1994)

김재홍,안진균,정성재,김영태,김중환,김시영,이석종,이홍렬,서호석,김경훈,권혁진,정우권,고우석,이용석,안필수,오준규,오용섭 대한화학요법학회 1996 대한화학요법학회지 Vol.14 No.1

Background : In recent years gonorrhoea has been panendemic and remains one of the most common Sexually Transmitted Diseases in the world, especially in developing countries. Objective & Method : For the detection of a more effective therapeutic regimen and assessing the prevalence of Penicillinase Producing Neisseria Gonorrhoeae(PPNG), Ive have been trying to study the patients who have visited the VD Clinic of Choong-Ku Public Health Center in Seoul since 1980 by means of the chromogenic cephalosporin method. Results : In 1994, 168 strains of N. gonorrhoeae were isolated, among which 109 (64,9% ) were PPNG. Conclustion : Our results suggests that the prevalence of PPNG in Seoul is still increasing.

한국인 정상 성인의 하부요추 횡돌기 단면적에 대한 연구

안재성,이준규,양준영,김영모,이문종 충남대학교 의과대학 지역사회의학연구소 1999 충남의대잡지 Vol.26 No.1

A posterolateral intertransverse process fusion is generally considered to be one of the most common types of lumbar fusion and a reliable procedure. It is reported that establishment of blood supply is important for nutrition as well as for formation of new bone during bone graft healing. Since the major interosseous blood supply for vascularization of autogenous bone graft is originated from the upper and lower transverse process, the one of the transverse process can he related to rate of bony union. It can be constructed that different union rate can result from the differences in transverse process areas. In this study, the area of the transverse processes of L5 were measured in normal adult. For this purpose, Ushikata area-Curvimeter (X-PLAN 360) was used. In Results, there was no significant differences in the age, but there was differences in the gender.

비완압형 어태치먼트의 위치에 따른 하악 가철성 국소위치의 지지조직에서의 저작압 분산 양태에 관한 3차원 유한요소적 연구

안원준,우순섭,이영수,심광섭,유광희 한양대학교 의과대학 1999 한양의대 학술지 Vol.19 No.1

The purpose of this study was to evaluate the stress patterns developed in supporting structures by removable partial denture with an extracoronal and an intracoronal rigid attachment. The mandibular removable partial dentures with Mini S-G (extracoronal) and C-M Box (intracoronal) attachment were constructed. Under 100N, 200N of vertical and 25N, 50N of lateral loads at the 1st and 2nd lower molar, stress distribution patterns and displacement were analyzed with three dimensional finite element method. The result were as follows: 1. There was no apparent difference in the patterns of stress distribution between rigid extracoronal and rigid intracironal attachments. 2. In case of the single abutment tooth with the rigid intracoronal attachment, it was not proper to preserve the abutment tooth. 3. With splinted abutments, the stress was distributed through all the root surface of both abutments. With single abutment, the stress was concentrated on the distal root surface of abutment. 4. With splinted abutments, there was not clear difference in the patterns of stress distribution with or without lingual bracing part. 5. In case of the single abutment tooth with the rigid intracoronal attachment and cantilever. More stress was concentrated around the abutment tooth with the lingual bracing part under loaded concentrated force and the abutment tooth without the lingual bracing part under loaded distributed force. 6. In case of the splinted abutments with the rigid extracoronal and intracoronal attachment, the denture base was displaced posteriorly and inferiorly when the force was applied. 7. In case of the single abutment tooth with the rigid intracoronal attachment, there was little displacement at the denture base.

고출력 CW Nd:YAG 레이저를 이용한 CSP 1N 박판재 절단시 공정변수의 절단표면특성에 미치는 영향

안동규,김민수,이상훈,유영태,박형준 한국공작기계학회 2004 한국공작기계학회 추계학술대회논문집 Vol.2004 No.-

The objective of this research work is to investigate the influence of process parameters, such as power of laser, travel speed of laser and material thickness, on roughness and striation of the cut surface for the case of cutting of CSP IN sheet using high power Nd:YAG laser with continuous wave (CW). In order to find the practical cutting region and the relationship between process parameters on the roughness and the striation, several laser cutting experiments are carried out. From the results of experiments, the allowable cutting region and an optimal cutting speed for each cutting condition have been obtained to improve the quality of the cut surface. In addition, it has been shown that the surface roughness is related to the number of striation and depth of valley of the cut surface.

폴리카보네이트 수지의 압출가공 특성

안영철,김효준,박인수 慶南大學校 附設 工業技術硏究所 1998 硏究論文集 Vol.15 No.3

본 연구에서는 단축 압출기 내 수지 이동 현상을 이론적으로 해석하고, 구조와 물성을 알고 있는 비스페놀-A계 폴리카보네이트에 대하여 스크루우 회전속도와 유량을 측정하여 이론식으로부터 통로와 길이에 따른 압력의 분포 등을 계산하여 비교하였다. 그 결과, 같은 수평균 분자량을 가질 때 분자량분포가 넓은 것은 유리전이온도가 낮아 연화하기가 쉬울 뿐만아니라, 토출량이 많음에도 불구하고 압출기 내 고체층의 압력분포가 낮게 나타났다. 또한, 완전용융길이도 상대적으로 짧아짐을 보였다. 따라서, 폴리카보네이트의 화학적 구조나 수평균분자량이 같을 때 분자량분포가 넓은 것이 가공성이 우수하다고 판단된다. The transport phenomena of a plastic resin in a single screw extruder has been analyzed theoretically and from the theoretical formulas the pressure distributions along the screw channel were computed and compared with each other by measuring the screw revolution speed and the flow rate for some bisphenol-A polycarbonates for which the structure and properties are known. The results showed that when the number average molecular weights are equal, a polymer having higher molecular weight distribution not only has a lower glass transition temperature ans softens more easily by heating, but also has a lower pressure distribution in the screw in spite of the increased flow rate. It also had a shorter melting length than a polymer having narrow molecular weight distribution. Therefore, it can be said that when the chemical structure ans number average molecular weights are same, a polycarbonate resin having higher molecular weight distribution has a better processability than a polymer having narrow molecular weight distribution.

제주도 연안 인공어초 시설어장의 자원조성과 생산효과에 관한 연구

안영화,김준택 제주대학교 해양연구소 2000 해양자원연구소연구보고 Vol.24 No.-

The adhesive condition of shellfish and seaweeds and effects of production for artificial reefs were surveyed through field investigation during the period of 1994 -1998 in the coast of Jeju Island. The obtained results are summarized as follows : 1. 4 species of shellfish & 44 fishies (950g/㎥) were found at Overbridge type reefs area in the coast of Hado-Rj and 2 species of shellfish & 21 fishies (475g/㎥) were found a t Horn trangular type reefs area in the coast of Ilgwa-Ri and 1 species of shellfish & 6 fishies (30g/㎥) were found a t Horn trangular type reefs area in the coast of Biyang-Do. This shows a high density of shellfish in that area except for Biyang-Do reefs area. 2. Adhesive living condition of seaweeds was showed 9 species (8.270g/㎥) in the Hado-Ri and 5 species (330g/㎥) in the Ilgwa-Ri and 5 species (10.490g/㎥) in the Biyang-Do grounds. This showed a high density of Ecklonia cava and Sargassum fulvellum in that area except for Biyang-Do reef area. but Biyang-Do area was a high density of Codium fragile 3. The result are catch per unit from trammel nets. artificial reef area was showed 5 species & 16 fishies (2.950g) and natural reef area was showed 4 species & 34 fishies (2.300g). Thus. a catched fishes in the artificial reef area was large size. natural reef area was small size fishes and control area was floating fishes.

무선 센서 네트워크에서 신뢰성 전송을 위한 동적 그룹화 메커니즘

안성은,차홍준,정영준 강원대학교 정보통신연구소 2008 정보통신논문지 Vol.12 No.-

In recent years, many applications in WSN have increasingly interested in data transfer reliability. In this paper, we propose a dynamic grouping transfer mechanism which maintains both reliability and energy efficiency in transmission from a source to a sink. The proposed scheme considers channel error of each node. Then it uses an end-to-end ACK transmission in a group and a hop-by-hop ACK transmission between groups. Consequently this mechanism minimize the cost of packet transfer along with enhancing the network lifetime and reliability.

FDM에서 경사면의 표면과 면적오차법의 관계에 대한 연구

전재억,정진서,황영모,김수광,김준안,계중읍,하만경 한국공작기계학회 2002 한국공작기계학회 추계학술대회논문집 Vol.2002 No.-

In any rapid prototyping process, the layer by layer building process introduces an area error between the staircase and the surface line specified by the computer-aided design model. This affects the dimensional accuracy as well as the surface finish for different part build orientations. This paper describes a methodology for computing the area error for any orientation of the part built by the fused deposition modelling system. This technique can be applied to determine the best build orientation of the part, based on the minimum area error. This technique is verified by comparing the results with the experimental measurements of the area error of the parts built at different orientations.

제주도 연안 인공어초 시설어장의 자원조성과 생산효과에 관한 연구

안영화,김준택 제주대학교 해양연구소 2000 해양과환경연구소 연구논문집 Vol.24 No.-

The adhesive condition of shellfish and seaweeds and effects of production for artificial reefs were surveyed through field investigation during the period of 1994~1998 in the coast of Jeju Island. The obtained results are summarized as follows : 1. 4 species of shellfish & 44 fishies (950g/m2) were found at Overbridge type reefs area in the coast of Hado-Ri and 2 species of shellfish & 21 fishies (475g/m2) were found at Horn trangular type reefs area in the coast of Ilgwa-Ri and 1 species of shellfish & 6 fishies (30g/m2) were found at Horn trangular type reefs area in the coast of Biyang-Do. This shows a high density of shellfish in that area except for Biyang-Bo reefs area. 2. Adhesive living condition of seaweeds was showed 9 species (8.270g/m2) in the Hado-Ri and 5 species (4 330g/m2) in the Ilgwa-Ri and 5 species (10.490 g/m2) in the Biyang-Do grounds. This showed a high density of Ecklonia cava and Sargassumm fulvellum in that area except far Biyang-Bo reef area, but Biyang-Do area was a high density of Codium fragile. 3. The result are catch per unit from trammel nets, artificial reef area was showed 5 species & 16 fishier (2.950g) and natural reef area was showed 4 species & 34 fishies (2.300g). Thus. a catched fishes in the artificial reef area was large size. natural reef area was small size fishes and control area was floating fishes.

沙上地域 産業體 勞動者의 職場體育 參與擴大 方案

安永弼,鄭琮勳,鄭三鉉,金海禮,趙在基,朴俊東,金垠利,張禎允,金福善,孔庚鎬 東亞大學校附設스포츠科學硏究所 1989 스포츠科學硏究論文集 Vol.7 No.-