한라산 주변에 발생하는 Karman Vortex Street 재현

권지혁(Kwon Ji-hyuk·Lee),이연원(Lee Yeon-won),김영덕(Kim Young-duk),박광열(Park Kwang-yul) 한국풍공학회 2006 한국풍공학회지 Vol.10 No.1

늦가을과 초본 사이 제주도 후면에 Karman vortex street가 발생한다. 이러한 vortex가 발생하기 위해서는 기온 역전층과 5 ~ 13 m/s의 지속적인 바람이 필요하다는 것을 밝히기 위한 많은 연구들이 있었다. 이러한 vortex clouds는 발생 후 주 풍향의 방향을 이동하게 된다. Karman vortex street는 기상학에서 매우 흥미로운 주제이다. 본 연구에서는 LES 난류 모델을 이용하여 Karman vortex street에 관한 해석을 수행하고 수치해석을 통해 얻은 결과와 기상 데이터가 일치함을 보였다. From late autumn to the beginning of the spring, the phenomena of the Karman vortex street have been frequently observed in the wake of Mt. Halla in the Jeju island. Some researches revealed that the necessary conditions for development of these vortex clouds are a strong low-level inversion of temperature and a persistent wind speed of 5 to 13m/s. After the cloud is formed, the vortex clouds are shed from alternating sides of Jeju island and then move downwind with main airflow stream. The Karman vortex street in the wake of the Jeju island was one of the interesting topics in meteorology. In this study, CFD using LES turbulence model was developed to investigate the Karman vortex street and the results of CFD showed a good agreement with weather data.

임신부의 인플루엔자 백신 접종률 및 관련요인

김미정,이승연,이광수,김아름,손동욱,정문현,박신구,박지현,이병익,이진수 대한감염학회 2009 감염과 화학요법 Vol.41 No.6

Background : During seasonal influenza epidemics and previous pandemics, pregnant women have been at increased risk for complications related to influenza infection. Although influenza vaccination has been widely recommended to pregnant women and immunocompromised hosts, the vaccination rate is presumed to be low in pregnant women. This study was aimed to evaluate the vaccination rate and factors associated with Influenza vaccination among pregnant women, who are at high risk for developing complications from the influenza. Materials and Methods : This study was carried out by telephone survey from April, 2007 to August, 2007. Women who were in their second trimester of pregnancy or above,- during October, 2006 and February, 2007, the recommended vaccination period, and had given birth at Inha University Hospital were selected as the study population. Immunization status, general understanding, and factors associated with vaccination were evaluated. Results : Among a total of 506 eligible pregnant women, 227 (44.8%) responded to the questionnaires. The influenza vaccination rate among the pregnant women was only 4% (9/227). Major reasons for not receiving vaccination were first, not awaring the necessity of immunization during pregnancy (48.5%, 110/227) and second, misunderstanding that it is prohibited during pregnancy (36.1%, 82/227). The major factors that influenced the compliance of vaccination were correct understanding and doctor's recommendation on the influenza immunization during pregnancy. Conclusions : The influenza vaccine coverage on pregnant women was very low and the awareness of influenza vaccination during pregnancy in general was inaccurate. Shift in perception is required and this can be achieved by educating the pregnant women on the safety and efficacy of vaccination. In addition, doctors' active encouragement to vaccination is highly recommended.

소음인(少陰人) 태음병(太陰病) 심하비증(心下?證)의 병증약리(病證藥理) 고찰

서영광,이지원,이준희,최원철,이의주,고병희,Seo, Young-Kwang,Lee, Ji-Won,Lee, Jun-Hee,Choi, Won-Cheol,Lee, Eui-Ju,Kho, Byung-Hee 사상체질의학회 2010 사상체질의학회지 Vol.22 No.3

1. Objective: Gastric Stuffiness (心下?證) in the Soeumin Taeeum symptomatology (少陰人 太陰病) in Sasang Constitutional Medicine shows an interesting evolutionary process. Originally found in the texts of Sanghanlun (傷寒論), the perspectives regarding the symptoms of Gastric Stuffiness were expanded by many medical scholars and Lee Jema. To comprehend the Jema's concept of Taeeum symptomatology and utilize his prescription clinically, it deserves to study on the Gastric Stuffiness in Donguisuseowon (東醫壽世保元). 2. Methods: Many texts including Sanghanlun (傷寒論) and Dongeuibogam (東醫寶鑑) were reviewed in order to track the evolutionary process concerning the symptoms of Gastric Stuffiness. Also, Lee Jema's works including the different versions of Donguisuseowon (東醫壽世保元) were reviewed to examine the development of Lee's concepts regarding the Gastric Stuffiness in the Soeumin Taeeum symptomatology. 3. Results and Conclusions: 1) Most of the previous concepts on Gastric Stuffiness were generally similar to those found in Sanghanlun, especially in that they addressed Yang deficiency of the middle triple energizeer as the central pathogenic process. 2) Lee Jema's views on the epigastric discomfort in the Soeumin Taeeum symptomatology evoloved over time and culminated in the finalized pathology and therapeutics appearing in his last work, the Shinchuk version of Donguisuseowon (東醫壽世保元). 3) 4 kinds of prescription which invented by Lee Jema to treat the Gastric Stuffiness in the Soeumin Taeeum symptomatology can be matched to the prescription of Sanghanlun respectively. However through evolutionary process of Jema's prescriptions, the indication of them expanded: not only to treat Gastric Stuffiness but to diverse symptoms of Soeumin.

부산·울산·경남지역 직업병 감시체계

김정일,김병권,김정원,채창호,이철호,강동묵,김지홍,김진하,김영욱,이영하,이지호,김정호,윤형렬,유철인,정백근,장태원,김운규,윤동영,강진욱,김종은,안진홍,이동준,장준호,이광영,송혜란,최영희,이용환,조병만,최홍렬,고상백,김은아,이유진,홍영습,정갑열,김정만,김준연 大韓産業醫學會 2004 대한직업환경의학회지 Vol.16 No.1

Objective: Occupational medicine specialists in the Busan, Ulsan and Kyung-Nam areas established an area-based occupational disease surveillance system and used this system to collected case information for the purpose of preventing occupational diseases Methods: l l hospital participated in this system. The authors selected five main diseases, which were hand-arm vibration syndrome (HAVS), work-related musculoskeletal disorder (WRMSD), occupational asthma, occupational skin disease and occupational and occupational lung cancer and established their case definitions. All cases were reported on the web, and real time analysis was conducted. Results: Between April 2001 and April 2003, 192 cases of HAVS, 118 cases of WRMSD, 33 cases of occupational asthma, 17 cases of occupational skin disease and 17 cases of occupational lung cancer (for a total of 377 cases of these five main diseases) were reported. most of the HAVS cases came from shipbuilding, and 172 of them (92.7%) were associated with grinding. Of the four main types of WRMSD, carpal tunnel syndrome (CTS) was the most prevalent with 46 cases and shipbuilding was also the main industry involved (83.9%). The ergonomic risk factors involved mainly associated with the hand. In 19 (57.6%) and 4 (12.1%) cases of occupational asthma, the agents involved. The causative agents of occupational lung cancer included Cr, welding fume, PAH, Ni, etc. 10(58.8%) of the cases were diagnosed as squamous cell carcinoma and 5(29.4%) as adenoma. Conclusion: This result showed that an area-based occupational disease surveillance system might provide an effective method of evaluating the prevalence of such diseases, however the Busan, Ulsan and Kyung-Nam provinces are too large to be treated as individual areas. Therefore, the authors suggest that each province should establish its own surveillance system.

웹 브라우져와 음성 인터페이스 연동 기법에 관한 연구

지진구,이광만 공주영상정보대학 1999 논문집 Vol.6 No.-

웹브라우저는 컴퓨터 네트워크와 WWW에 대한 전문지식이 없는 일반 사용자도 손쉽게 WWW에서 정보를 얻을 수 있도록 함으로써 WWW의 대중화에 큰 역할을 하였다. 음성 인식 기술은 인간의 자연스러운 의사소통 수단인 음성을 입력 수단으로 이용함으로써 특별한 조작 방법을 습득할 필요가 없으며 접촉과 마찰에 의한 장치의 파손이나 마모가 거의 없다. 또한 비교적 원거리에서 조작이 가능한 장점이 있다. 본 논문에서는 사용자가 음성을 발음함으로써 웹브라우저를 조작 할 수 있도록 하는 웹브라우징을 위한 음성 인터페이스를 설계, 구현하였다. 웹브라우징을 위한 음성 인터페이스는 기존까지 마우스나 키보드를 이용한 수 조작으로 웹브라우저를 사용하던 방식에서 벗어나 사용자가 음성을 발음하여 웹브라우저를 조작할 수 있도록 한다. 이를 위해 웹브라우저와 음성 인터페이스를 연동할 수 있는 기술이 필요하다. 음성 인터페이스와 연동할 수 있는 웹브라우저의 기능은 URL을 입력하는 기능으로 로케이션, 히스토리, 북마크, 앵커를 이용할 수 있다. 이들이 마우스에 의해 조작되는 상황을 음성에 와한 순차적 처리로 변환함으로써 음성 인터페이스와 연동이 가능하다. 웹브라우징을 위한 음성 인터페이스는 여러 형태로 개발이 가능한데 음성 인터페이스에 적합한 새로운 웹브라우징 모듈을 개발하고 이를 이용한 웹브라우저를 개발하는 경우와 기존에 개발된 웹브라우징 컴포넌트에 음성 인터페이스를 추가하여 웹브라우저를 개발하는 경우가 있으며 애드온(add-on)형식으로 기존에 시판되고 있는 웹브라우저를 지원하는 경우가 있다. 다음으로 일반인이 흔히 사용하는 IBM-PC 호환용 PC에서 동작하는 웹브라우징을 위한 음성인터페이스를 설계, 개발하였다. 기존에 개발된 웹브라우징 컴포넌트와 음성 인터페이스를 포함하는 음성 인식 웹브라우저를 개발하였으며 음성 입력기, 음성 인식기, 제어기 그리고 웹브라우징 컴포넌트로 구성된다. 음성 입력기는 실시간으로 고립단어를 입력받아 음성인시기에 전달하고 음성 인식기는 이를 인식하여 인식결과를 제어기에 전달한다. 제어기는 인식결과에 해당하는 URL을 웹브라우징 컴포넌트에 입력함으로써 동작한다. WWW의 발전으로 웹브라우저의 사용은 계속적으로 증대할 것이다. 웹브라우징을 위한 음성 인터페이스는 음성 인식의 장점을 웹브라우저에 적용함으로 웹브라우저와 WWW의 발전에 기여할 수 있다. PC의 고사양화로 고성능의 음성 인터페이스를 기대할 수 있을 것이다.

치성각화성낭종 (Odontogenic Keratocyst)환자의 치험례

이지민,박재홍,김광철,최성철 大韓小兒齒科學會 2008 大韓小兒齒科學會誌 Vol.35 No.4

치성각화성낭종(Odontogenic keratocyst. OKC)은 치체(dental lamina)로부터 발생하는데,모든 악골 낭의 5~17% 정도를 차지하며 낭의 내부는 이장상피로부터 유래한 점액성이나 치즈양 물질인 케라틴(keratin)으로 채워져 있다. 치성낭 중 가장 높은 재발률을 보인다는 것이 이 낭의 중요한 특정이다. 간혹 기저층에서 인접 결체조직 벽으로 돌기가 증식하기도 하며 결체조직 벽 내에 존재하는 치성 상피조직 섬의 증식이 위성 소낭을 발생시키기도 한다. 이들 소낭들이 치성각화성낭종의 높은 재발률의 원인으로 여겨진다. 치성각화성낭종은 다양한 연령층에서 발견되나, 20대와 30대에서 호발한다. 남성에서 다소 호발하며 하악,특히 제3대구치와 하악지 부위에서 자주 발생한다. 대개 피질골의 팽융에 의해 처음 발견되며 매복치와 관련되어 있고 일반적으로는 증상이 없지만 동통과 감염이 나타날 수도 있다. 흡인시 걸쭉한 노란 치즈양 물질인 케라틴이 관찰되며 특히 재발이 잘 된다. 치성 각화낭의 중요한 특징 중의 하나는 병소가 피질골의 팽창을 많이 유발시키지 않으면서 악골의 내면을 따라 성장한다는 것이다. 치성각화성낭종화낭은 인접 치아를 변위시키고 흡수사킬 수 있으나 함치성낭보다는 정도가 심하지 않다. 하악관을 하방으로 변위시키기도 하며 상악 병소의 경우는 상악동을 침범해서 상악동 전체를 차지하기도 한다. 본 증례는 7세 10개월 된 여아의 하악 우측 제2유구치 부위에 발생한 치성각화성낭종에 대한 증례로써 전신마취하 낭종적출술을 시행하였다. 낭종에 포함된 제1.2유구치,유견치 및 제1소구치 치배를 발거하였으며,현재 공간유지장치를 장착후 주기적으로 내원중이다. Odontogenic keratocyst is classified as a developmental odontogenic cyst and is believed to arise from cell rests of the dental lamina. It accounts for 3% to 11% of all jaw cysts and they occur twice as often in the mandible as in the maxilla. Histologically, the cysts are lined by stratified, keratinizing, squamous epithelium. Daugther cysts or microcysts are often observed microscopically. The recurrence rate has been reported variously, but is known by its high recurrence rate. These lesions are more common in males than in females, occur over a wide age range and are typically diagnosed during the 2nd and 3rd decade. The diagnosis depends on the cyst's microscopic features and is independent of its location and radiographic appearances. This cyst is a radiolucent lesion that is often multiloculated, has a smooth or scalloped border. The cyst is characteristically located in the body and ramus of the mandible, and often occurs in conjunction with an impacted tooth. This case report describes an odontogenic keratocyst on the lower right molar area of an 8-year-old girl. The cyst was removed under the general anaesthesia, and is being checked regularly for any recurrences.

하악에 전이된 위 선양암종

이지운,권기정,안현숙,고광준 대한구강악안면방사선학회 2005 Imaging Science in Dentistry Vol.35 No.3

Metastatic tumors to the jaw bones are uncommon. The most common metastatic tumors to the jaw bones are the breast, lung and kidney. In the jaw bones, the common location of the lesions is the mandible, and the posterior area of the mandible is more commonly affected. The radiographic appearance is quite variable. In this report, a very rare case of metastatic gastric adenocarcinoma to the mandible is presented. The patient had undergone a gastrectomy 3 years ago.

7세대 결합제의미세누출에 관한 연구

이상엽,이광희,김대업,라지영 대한소아치과학회 2006 大韓小兒齒科學會誌 Vol.33 No.3

다발성 말초신경병증으로 발현한 Churg-Strauss 증후군 1예

이지현,김종국,유봉구,김민정,김광수 KOSIN UNIVERSITY COLLEGE OF MEDICINE 2006 高神大學校 醫學部 論文集 Vol.21 No.1

Churg-Strauss syndrome (CSS) is defined by eosinophil-rich and granulomatous inflammation of the respiratory tract and necrotizing vasculitis affecting small to medium-sized vessels, associated with asthma and eosinophilia. It is strongly associated with antineutrophil cytoplasmic antibodies, especially the anti-myeloperoxidase type (p-antineutrophil cytoplasmic antibodies) are most often found in CSS. Neurologic involvement is common and may develops early in patients with CSS, usually manifestings as peripheral neuropathy especially mononeuritis multiplex. We report a 58-year-old woman of Churg-Strauss syndrome presented with distal asymmetric polyneuroapthy, which has been reported rarely.

화상을 입은 백서에서 식이의 성분이 세균전위에 미친 영향

이광만,이경근,조지현 圓光大學校 醫科學硏究所 1997 圓光醫科學 Vol.13 No.1-2

Bacterial translocation means the passage of viable bacteria from the gastrointestinal tract to normally sterile tissues such as the mesenteric lymph nodes and other internal organs. It is now clear that translocation is increased in bums and in injury including hemorrhagic shock. Total parenteral nutrition and elemental enteral diets are thought to be associated with atrophy of the intestinal mucosa and increased translocation. The purpose of this study was to determine whether or not the composition of nutrients effects on bacterial translocation in normal and burned rats. 54 male Sprague-Dawley rats were randomized to 3 groups of 18 animals each. Group Ⅰ was non-burned control rats, and group Ⅱ and Ⅲ were burned rats. Rats in group Ⅱ and Ⅲ were subjected to contact dermal bum of 10% and 20% each of their body surface area. All 3 groups were re-randomized to 3 subgroups of 6 animals each; subgroup 1 fed rat chow, subgroup 2 fed elemental diet(Energen®) and subgroup 3 fed oral TPN solution. Animals were fed respective diets ad libitum for 2 weeks, and then mesenteric lymph nodes, portal vein blood, and cecal content were aseptically obtained for culture. Bacterial count in mesenteric lymph nodes(MLN) of burned rats was significantly increased than that of non-burned rats(p=0.033). In burned rats, MLN bacterial count was the highest in the rats fed oral TPN (566.1±870.5/g vs. 270.1±382.4/g in the rats fed elemental diet and 164.9±184.7/g in the rats fed chow). Cecal culture in burned rats revealed a statistically significant increase in the cecal anaerobic count in the rats fed oral TPN when compared to the rats fed chow or elemental diet(p=0.003). There was close correlation between MLN bacterial count and cecal aerobes count(r=0.843, p=0.001). In conclusion, the type of nutrients had influence on bacterial translocation in burned animals partly by increasing the cecal bacterial population.