電子産業의 實態分析 및 競爭力 提高戰略

鄭俊秀,尹英得,方鎬烈,金基錫,金正敎 釜山大學校 經營 經濟 硏究所 1990 經營 經濟 硏究 Vol.9 No.1

소라, Turbo cornutus SOLANER의 서식장 환경과 집단성장에 관하여

이정재,이기완,이정열 제주대학교 해양연구소 1978 해양자원연구소연구보고 Vol.2 No.-

Studies on the growth of topshell which had tagging liberated and ecological survey were taken from the three culturing topshell farms of the Seogwipo coast from June to December, 1977. Three culturing topshell farms are Supseom, Bomokri and Beophwanri coast. The culturing topshell farms are shallow with the mean depth 5~8m, and vertical changes of water temperature and specific gravity in each arears were not appeared. The water temperature of Supseom area was lower than the other areas. The compositions of submarine geological type in Supseom, Bomokri and Beoph-wanri area were B (Hole type) and C (crevice type) type, A (Rock type) type, and C and D (Sand type) type respectively. The Current speeds of each culturing farm area were in the range of 1~20cm/sec, and the current of Beophwanri culturing farm area was slower than the other areas. The absorption "coefficient of Seogwipo coastal water was in the range of 0.218-0.329 and the mean was 0.283. Fifty species of marine algae were identified. Major algal group of each culturing farms were Sargassun sp., Ecklonia, cava, Chladophora sp., calcareous algae. Particularly. Beophwanri culturing farm was abundant in Saragassun sp. Of the three culturing topshell farms increment in growth of topshell were showed rapid growth from June to October and noted that increment in growth of Bomokri was the highest. During the tagging liberated period , the number of spines on newly formed parts of shell was in the range of 0~5 spines. The creeping distance was 5~25m in each culturing topshell farm in all.

소라, Turbo cornutus SOLANDER의 棲息場 環境과 集團成長에 關하여

李定宰,李祺完,李廷烈 濟州大學 臨海硏究所 1978 해양과환경연구소 연구논문집 Vol.2 No.-

1977년 6月부터 12月까지 西歸浦 沿岸에 位置한 숲섬,甫木里,法還里의 3個 養成場을 對象으로 海洋基礎生態學的 要因 및 標識放流한 소라의 成長과 移動등을 調査하였다. 1. 各 養成場의 水溫 및 比重의 垂直的 變化는 보이지 않았고 숲섬 養成場이 多少 低溫을 나타냈다. 2. 숲섬 養成場의 海低地型은 B,C형태이고 甫木里 養成場은 A形態,甫木里 養成場은 C, D形態가 主로 構成되어 있다. 3. 各 養成場의 流速은 숲섬 養成場이 가장 빨라 4∼20 ㎝/sec였고, 法還里 養成場은 1∼10㎝/sec로 緩慢한 流速을 보였다. 4. 西歸浦 沿岸의 吸收係數는 0.218∼0.329(평균 0.283)이였고 숲섬, 法還里, 甫木里 順으로 작았다. 5. 調査된 海藻相 中 各 養成場別 優點種은 共히 모자반, 감태, 석회조, 클라도포라 등이였으며 특히 法還里 養成場은 모자반이 優勢하게 分布했다. 6. 標識放流한 소라의 成長度는 6月부터 10月까지 빠른 傾向을 보였고,養成場別 成長速度는 甫木里,숲섬,法還里의 順이었다. 7. 標識放流期間 동안 具殼 新生部에 形成된 棘數는 2∼3個가 가장 많았다. 8. 소라의 移動거리는 各 養成場 共히 5∼25m의 範圍가 가장 높은 頻度를 보였다. Studies on the growth of topshell which had tagging liberated and ecological survey were taken from the three culturing topshell forms of the Seogwipo coast form June to December, 1977. Three culturing topshell farms are Supseom, Bomkri and Beophwanri coat. The culturing topahell farms are shallow with the mean depth 5∼8m, and vertical changes of water temperature and specific gravity in each arears were not appeared. The water temperaure of Supseom area was lower than the other areas. The compositions of submarine geological type in Supseom, Bomokri and Beophwanri area were B (Hole type) and C (crevice type) type, A (Rock type) type, and C and D (Sand type) type respectively. The Current speeds of each culturing farm area were in the range of 1∼20㎝/sec, and the current of Beophwanri culturing farm area was slower than the other areas. The absorption coefficient of Seogwipo coastal water in the range of 0.218~0.329 and the mean was 0.283. Fifty species of marine algae were identified. Major algal group of each culturing farms were Sargassum sp.,Ecklonia cava, Chladophora sp., calcareous algae. Particularly, Beophwanri culturing farm was abundant in Saragassum sp. Of the three culturing topshell farms increment in growth of topshell were showed rapid growth from June to October and noted that increment in growth of Bomokri was the highest. During the tagging liberated period, the number of spines on newly formed parts of shell was in the range of 0∼5 spines. The creeping distance was 5∼25m in each culturing topshell in all.

인천 인현동 호프집 화재 피해자 분석

최정태,안무업,안희철,최영미,정재봉,서정열,유기철,이삼우,박석현,조준휘,김성환,김아진,송근정 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Purpose : This study was conducted to develop field triage, transportation, distribution, and prehospital care at a fire disaster by analyzing the victims of the fore that broke out at a bar in Incheon. Method : We analyzed the cases of the victims of a fire in Incheon in Oct. 1999. We determined the primary care hospital, the arrival time, the burn size, the outcome, and the injury type from the medical records, the concerned organ records, and interviews with concerned persons. Result : The total number of victims was 137: 56 prehospital deaths, 1 hospital death, and 80 survivals. The Pearson correlation coefficient between the burn size and the severity was -0.175. There were 121(89.6%) cases of inhalation injury, 59 (43.7%) cases of flame burns, 66 (48.9%) cases of hypoxic brain damage, and 16 (11.9%) cases involving other types of injury. Conclusion : The causes of death of the fire victims were inhalation injury and hypoxic brain damage due to CO poisoning and other toxic inhalants. We propose the use of a simple triage and rapid treatment(START) system and a reassessment the delayed category in fire disasters.

자기장 저속 냉동보관법을 이용한 쥐 치아 치주인대세포의 활성도 검사

안현정,김의성,김진,김덕원,김기열,이찬영,이승종 大韓齒科保存學會 2008 Restorative Dentistry & Endodontics Vol.33 No.4

본 연구의 목적은 흰쥐 상악 대구치를 발거하여 자기장 저속 냉동보관법을 이용하여 냉동 시 치주인대세포의 활성도 및 세포 사멸도를 MTT검색법과 TUNEL검사를 이용하여 측정하고자 하였다. 4주령의 암컷 Sprague-Dawley계 된 쥐의 상악 좌우 제1,2대 구치를 발거하여 각군 당 12개의 쥐 치아를MTT검색에 이용하였고 6개의 치아를 TUNEL 검사에 이용하였다. 실험군은 5개군으로 대조군은 즉시 발치군이며 4℃냉장고에서 1주일간 보관한 냉장군, 발치 후 동해방지제 처리과정을 거쳐 -196℃의 액화질소에 넣어 급속 냉동한 액화질소군, 21.7 ㎃, 60 ㎐, 1 G의 자기장을 이용하여 -0.3℃/min 의 속도로 -20℃까지 냉동 후 -196℃로 급속 냉동한 자기장군, -0.3℃/min의 속도로 -20℃까지 냉동 후 -196℃에 급속 냉동한 저속 냉동군으로 나누었다. 보존액은 F medium을 사용했으며 동해방지제로 10% dimethyl sulfoxide (DMSO)를 사용하였다. 치근면을 단위면적으로 표준화하기 위해 MTT측정값을 Eosin 염색 후 530 ㎜에서 측정한 흡광도 값으로 나누었다. TUNEL 검사 시 각 조직슬라이드에서 400배 크기의 현미경 시야에서 임의로 세 부분을 지정하여 정상 세포수와 양성 세포수를 세어 그 비율을 계산하여 각 실험군 당 평균치를 구하였다. 통계 분석을 위해 one way ANOVA를 시행하였으며 사후검정으로 Scheffe와 Tukey HSD방법을 썼으며 결과는 다음과 같다. MTT검색에 의한 흡광도를 Eosin염색 후 측정한 흡광도로 나눈 값에서는 자기장군은 즉시 발치군보다 낮은 세포활성을 보였고 (p < 0.05) 액화질소군, 저속 냉동군과는 통계적으로 유의성 있는 차이를 보이지 않았다. 그러나 자기장군은 액화질소군, 저속 냉동군과 함께 냉장군보다는 높은 세포 활성도를 보였다 (p<0.05).TUNEL검사 결과도 자기장군은 즉시 발치군보다 치주인대의 세포사멸도가 높았으나 (p < 0.05) 저속 냉동군과 액화 질소군과는 통계적으로 유의한 차이를 보이지 않았다. 자기장군은 냉장군보다 세포사멸도가 낮았으며 냉장군은 모든 군 중에서 세포 사멸도가 가장 높았다 (p<0.05). The purpose of this study was to evaluate the viability of periodontal ligament cell in rat teeth using slow cryopreservation method with magnetic field through MTT assay and TUNEL test. For each group, 12 teeth of 4 weeks old white female Sprague-Dawley rat were used for MTT assay, and 6 teeth in TUNEL test. The Maxillary left and right, first and second molars were extracted as atraumatically as possible under tiletamine anesthesia. The experimental groups were groupl (immediately extraction), group 2 (cold preservation at 4℃ for 1 week), group 3 (rapid Cryopreservation in liquid nitrogen), group 4 (slow cryopreservation with magnetic field of 1 G), and group 5 (slow cryopreservation). F medium was used as preservation medium and 10% DMSO as cryoprotectant. After preservation and thawing, the MTT assay and TUNEL test were processed. One way ANOVA and Scheffe method were performed at the 95 % level of confidence. The value of optical density obtained after MTT analysis was divided by the value of eosin staining for tissue volume standardization. In both MTT assay and TUNEL test, it had showed no significant difference among group 3,4, and 5. And group 3 had showed higher viability of periodontal ligament cell than group 2. From this study, slow cryopreservation method with magnetic field can be used as one of cryopreservation methods.

석면에 장기간 노출된 퇴직한 수리조선업 근로자의 폐영상 : 단순흉부촬영 및 고해상전산화단층촬영 소견과 그 유병률 Lung and Pleural Diseases Prevalence on Chest Radiograph and HRCT

김기남,김정일,,이기남,정갑열,김준연 大韓産業醫學會 2006 대한직업환경의학회지 Vol.18 No.2

목적: 장기간 석면에 노출되었던 퇴직한 조선소 근로자에서 단순흉부촬영과 고해상 CT소견 및 그 유병률을 알아보고자 하였다. 대상 및 방법: 수리조선소에서 배관공 또는 영선반에서 근무한 후 퇴직한 근로자 18명을 대상으로 하여 후전면 및 측면 단순흉부촬영과 고해상 CT를 시행하였다. 이들은 모두 조선소에서 사용하는 단열재 사용 작업 중에 석면에 노출되었다. 결과: 단순흉부촬영에서 총 18례 중 12례(66.7%)에서 흉막병변이 관찰되었다. 흉막플라크의 위치는 횡경막 단독으로 비후된 경우가 5례로 가장 많았으며, 외측흉벽 흉막플라크의 두계는 a가 3례, b가 1례에서 보였고, 길이는 1이 4례, 2가 1례에서 보였다. 흉막플라크를 가진 12례 중 2례는 미만성 흉막비후를 동시에 보였다. 흉막플라크의 석회화는 횡경막에서만 4례 관찰되었다. 석면과 관련된 폐실질병변이 의심되는 소견은 관찰되지 않았다. 고해상 CT에서는 16례(88.9%)에서 흉막비후가 관찰되었으며, 위치는 척추 주위 13례, 횡경막 11례 등이었다. 동반된 석회화는 7례에서 보였다. 두께는 1 mm부터 1cm까지 이었고, 길이는 2cm부터 47cm이상까지 매우 다양하였다. 3명(16.7%)에서 흉막비후 근처의 하폐 기저부에 흉막하 곡선이 나타나는 석면폐증의 초기 소견이 보였다. 결론: 장기간 석면에 노출된 근로자의 석면 관련 흉막병변의 유병률이 매우 높아 장기적인 추적검사가 필요하다고 사료된다. Purpose: To determine imaging findings among retired workers who were long-term exposed to asbestos. Lung and pleural diseases prevalence were studied on chest radiograph and HRCT. Materials and Methods: Eighteen workers who were long-term exposedto asbestos occupationally in shipyards were examined by chest radiographs (PA and lateral view) and HRCT (high-resolution computed tomography). Results: In 12of 18 subjects (66.7%), asbestos-related pleural abnormalities were evident in diaphragmatic, lateral chest wall and costophrenic angle of the pleura on chest radiographs. The thickness of pleural plaques at the lateral chest wall varied. Diffuse pleural thickening was evident in 2 workers. Parenchymal abnormalities were not found on chest radiographs. On HRCT, pleural thickening wasobserved in 16 of 18 subjects (88.9%), in the areas of juxtavertebral, diaphragmatic, anterior, lateral, mediastinal and fissural pleura. Curvilinear subpleural lines representing early parenchymal asbestosis were found in the lower posterior lung in three of 18 subjects (16.7%). Conclusions: In long term asbestos-exposed workers, the asbestos-related pleural disease was 66.7% on chest radiographs and 88.9% on HRCT. The authors suggest that this group should be followed up periodically

관동맥 우회로술 중 경식도 심초음파도로 관찰한 도부타민 투여후와 우회로술후의 좌심실 국소벽운동

김희열,김종진,윤호중,유기동,박지원,이길환,노태호,채장성,김재형,홍순조,최규보 대한순환기학회 1997 Korean Circulation Journal Vol.27 No.8

연령에 따른 비강내의 단면적 및 용적의 변화 : Evaluation by Acoustic Rhinometry

나기상,김인중,성열웅 충남대학교 의과대학 지역사회의학연구소 1994 충남의대잡지 Vol.21 No.2

To study the geometric changes of the nasal cavity with aging, acoustic rhinometry was carried out in 100 normal subjects before and after decongestion. From each of the chosen curves, the following variables were calculated : location and cross-sectional areas of the I-notch and C-notch, the crosssectional areas at 3.3cm, 4.0cm, and 6.4cm from the tip of nosepiece, and the total volume of the nasal cavity. Data were analyzed statistically to evaluate the differences between the various age groups and between the congested and decongested state of the mucosa. This study may serve as a basic data for the evaluation of the patients with rhinologic diseases.

임베디드 시스템에서 Mobile IP 프로토콜 구현

宋東勳,裵振勝,鄭燦赫,吳世德,李基源,劉忠烈,河載承,李光培,金玄郁 명지대학교 산업기술연구소 2005 産業技術硏究所論文集 Vol.24 No.-

With rapid growth of the internet, need for the mobile communication networks is increasing. In this paper, we implement and test Mobile IP Protocol in Embedded System. Our Mobile IP-based testbed consisted of two sub-networks and each sub-network was configured to operate independently through use of router. To satisfy integrated wired/wireless network model established on the testbed design and show generality of the testbed, we implemented mobile nodes, home agent, foreign agent and router on the basis of Linux operating system. As the results of the evaluation, we confirmed that mobile nodes operated properly according to Mobile IP Protocol.

피부 적용 겔제제의 첨가제에 의한 수분 보유력 평가

이은미,박종희,경기열,전일순,조혜정,지웅길 충남대학교 약학대학 의약품개발연구소 2004 藥學論文集 Vol.19 No.-

The aim of this study was to improve the moisturizing and water retaining effects of a gel containing poloxamer 407, glycerin, sod hyaluronate, sorbo(sorbitol 70%). Topical preparations were formulated as a gel containing different concentration poloxamer 407, glycerin, sod. hyaluronate, sorbo(sorbito1 70%), lipid(ceramide. sphingosine ratio 1:l). We tested a various combination of different additives for the moisturizing effect The water holding capacity of the mixture was measured using a moisture analyzer. In vivo test was carried out on human skin using Skicon-200 and water retaining effect was increased by addition of lipid. Water evaporation test was performed by various concentration of additives and water evaporation characteristics of the preparations were determined using the moisture analyzer. Moisturizing and water retaining effects was increased by adequate combination of various additives with topical gel formulations.