단무지 공장에서 발생한 질식 사고의 원인과 방사선학적 소견: 중례보고 및 가스분석 결과

박충기,김만구,김흥철,안범규,박만수,황우철,최철순,강익원 江原大學校 附設 環境硏究所 1994 環境硏究 Vol.11 No.-

목 적:단무지 공장에서 질식사고를 일으켰던 가스의 종류를 알아내고, 이러한 가스중독의 방서선학적 소견을 소개하기 위하여 본 연구를 하였다. 대상 및 방법:단무지 공장에서 발생한 질식 사고자 3예중 생존자 1예를 대상으로 단순흥부X-선검사와 CT 소견을 분석하였으며, 가스의 종류를 알아내기 위하여 단무지를 유리병에 넣어 발생된 가스를 가스크로마토그래픽을 이용하여 분석하였다. 결 과:단무지 공장에서 발생한 질식사고자중 생존한 1명의 방사선학적 검사에서 신속히 호전되는 폐경결(consolidation)을 볼 수 있었으며 이는 폐부종의 소견임을 알 수 있었다. 협기성 상태에서 단무지를 담은 유리병의 상층부 가스를 실험 분석한 결과 이산화탄소, 에칠알코올이 다량으로 검출되었으나 독성가스는 주로 황화수소이였다. 결 론:단무지 공장의 질식 사고자에서 폐방사선학적 소견은 폐경결을 보이는 폐부증으로서 이는 실험을 통해 단무지에서 발생되는 유독가스인 황화수소 때문임을 입증하였다. Purpose: To identify the main toxic gas released from salted radish in rice bran(Dan-M-Ji) and to introduce the radiological findings of the patient who was exposed to the gas. Materials and Methods: Chest radiographs and CT scans of one survivor among three men who were exposed to the gas from Dan-Mu-Ji were reviewed. Gas obtained from the closed bottle containing Dan-Mu-Ji was analized by using the gas chromatography. Results: The radiographlc examinations of the survivor were suggestive of pulmonary edema with it's rapidly improving consolidations in both lung. The headapace gas within the bottle containing Dan-Mu-Ji was mainly composed with carbon dioxide, ethyl alcohol and hydrogen sulfide, of which hydrogen sulfide was considered the main toxic gas released. Conclusion: Under the anaerobic condition, Dan-Mu-Ji released toxic hydrogen sulfide. Inhalation of hydrogen sulfide might produce non-cardiogenic pulmonary edema.

著作權 侵害行爲에 대한 컴퓨터-네트워크 운영자의 責任

安相天,金哲洙 韓國海洋大學校 人文社會科學大學 1999 韓國海洋大學校 人文社會科學論叢 Vol.- No.6

不織布 에어 필터의 濾過性에 관한 硏究

安東汶,楊澈坤 成均館大學校 科學技術硏究所 1991 論文集 Vol.42 No.1

The effect of several factors on the filtration performance of nonwoven air filters has been investigated. The filter samples have been grouped into three : the first group composed of seven samples was made from polyester fibers with circular cross-section, the second composed of three samples was made from polyester fibers with circular, U-shape, and trilobal cross section, and the third was composed four ready-made goods used in filtration apparatus. The air filtration tests have been performed using A.F.I. filtration test apparatus by flowing a stream of air with dust particles. The relative filtration performances have been assessed from the measurements of the resistance, the arrestance and the dust holding capacity and the following results have been obtained : 1) The final resistance after feeding dust can be estimated from the initial resistance. 2) The dust holding efficiency and the dust holding capacity increase with the filter thickness but the resistance is independent of the filter thickness. 3) The smaller the mean pore size and the greater the number of pore at the constant porosity, the higher the dust holding efficiency. 4) The dust holding efficiency and the dust holding capacity increase with the fineness of the filter fiber at 95 percent of porosity. 5) The dust holding efficiency and the dust holding capcity can be increased by using the filters made from the fiber with non-circular cross-section, but the resistance is also increased by using them.

天安삼거리公園基本計劃에 關한 硏究

安奉遠,李錫孫,姜喆基,林秀眞,金恩一 경희대학교 1988 造景論叢 Vol.1 No.1

The goal of this study is to propose a plan for the construction of Chonan Samgori park. Present this park is designated a neighborhood park of Chonan city. This park is located on the point of traditionally important traffic point linked to Samnam province. And, this place is where the perspective experience of history and culture, which is a unique folk related activities. The site which covers about 96,000㎡is located about 4 km from the cityhall of Chonan city. This basic idea of this plan is to reconstruct the ancient culture and traditional way of life which is rapidly disappearing, to offer the place of education of vernacular culture, to give the recreation place to be a center where city dwellers release and enjoy. Facilities of this park are divided into five groups according to function such as support facilities, folk facilities, play facilities, educational and cultural facilities, and landscape facilities. Design principles are established as follows; to provide the folk park with identity, effectively to admit the folk-related activities, to maintain a functional linkage between facilities. The frame works for final master plan are Landuse plan, Circulation plan, Planting Plan, Facility plan.

스프라인 곡선을 이용한 내용기반 이미지 검색 시스템을 위한 모양 유사도

안철웅,김대영 啓明專門大學 産業開發硏究所 2002 啓明硏究論叢 Vol.20 No.1

본 논문에서는 모양특징을 사용하여 이미지를 검색하기 위한 유사도 측정에 관하여 논한다. 개체의 모양은 이미지에 있는 개체의 외곽선을 추출함으로서 얻어낼 수 있다. 이미지에 있는 각각의 개체는 수동으로 외곽선을 추출하게된다. 외곽선은 큐빅 스프라인 곡선을 사용하여 근사시키고. 특징벡터는 자동으로 추출한다. 각 개체의 모양 특징은 특징 데이터베이스에 추가되어 이미지 검색시 사용한다. 사용자가 그린 스케치 질의도 큐빅 스프라인 곡선을 사용하여 근사시키고, 특징벡터를 추출한다. 이미지의 검색시 사용자 스케치 질의의 특징백터와 이미지 데이터베이스에 있는 개체의 특징벡터와 비교하여 검색결과를 결정하게 된다. 본 논문에서는 개체의 모양 유사도를 측정할 수 있는 측도를 고안하였고 이것을 실험하였다. 실험결과 본 논문에서 제안하는 모양 유사도 측도가 유효함을 알 수 있었다. In this paper, we present a similarity measure for retrieving images based on object shape features. Shapes are derived by extracting the contour of relevant object represented in the images. For each object in the images, its contour lines are manually extracted and sampled at points, Its 2-D contours are approximated by parametric cubic spline curves and its shape feature vectors are automatically extracted. The object shape features are appended to feature DB and used during the image retrieval process. User sketch query is also approximated by parametric cubic spline curves, its shape features are extracted. During the image retrieval process, the shape features of user sketch query are compared with those of image DB using our similarity measure to determine the set of candidate images to be retrieved. We designed and experimented our shape similarity measure. Experimental result shows that our proposed similarity measure is effective one.

니체의 문화비판

안철택 한국독일어문학회 2004 독일어문학 Vol.24 No.-

In der vorliegenden Arbeit wird versucht, die Kulturkritik Friedrich Nietzsches zu erhellen. Zu diesem Zweck werden verschiedene Aspekte, z.B. Nietzsches Interesse an der Kultur, Leserkritik als Kulturkritik, Kritik des Christentums und Logizismuskritik untersucht. Als ein Ausweg seiner Kritik ergibt sich auch die Betonung der Kunst. Durch die Kunst, d.h. durch den Umweg uber die Kunst, findet er eine Losung in der Natur, die ein anderer Name fur das Leben ist. Nietzsche liest die Welt und die Geschichte der Menschheit nicht mit der Optik "Politik", sondern mit der Optik "Kultur". Deshalb spielt der Begriff "Kultur" bei ihm eine entscheidende Rolle. Als ein Oberbegriff ist die Kultur in der Betrachtung einer Gesellschaft sehr wichtig, und auch in der Analyse gesellschaftlicher Phanomene ist die Kultur bedeutsam. Den Unterschied zwischen der Kultur und der Zivilisation bemerkt er und legt den Schwerpunkt auf die geistige Kultur. Die negativen Seiten der Zivilisation kritisiert er heftig. In seinen offentlichen Vortragen "Uber die Zukunft unserer Bildungsanstalten" erwartet er von den Lesern drei Eigenschaften. Seine Erwartung von den Lesern kann als eine Kulturkritik seiner Zeit verstanden werden. Er erwartet zuerst, daß die Leser ruhig sein mussen und daß sie sich nicht daran gewohnen, den Wert jedes Dinges nach der Zeitersparnis oder Zeitvergeudung abzuschatzen. Zweitens mussen sie gebildet genug sein, um von ihrer Bildung recht genug, ja verachtlich zu denken. Und drittens durfen sie nicht fordern, dass am Ende unbedingt Resultate oder Tabellen stehen sollen. Diese drei Eigenschaften, die er von den Lesern erwartet, enthalten die kulturkritischen Elemente seiner Zeit. Er kritisiert den Gedanken "Zeit ist Geld" und er appelliert an die Leser, daß die Bildung allein nicht vollkommen ist, sondern immer eine Selbstreflexion benotigt. Nicht zuletzt betont er, dass man eine Schlussfolgerung nicht braucht. Die Kulturkritik Friedrich Nietzsches richtet sich auch an Staat und Volk. Die damalige Beziehung zwischen Staat und Kultur halt er fur ungesund. Aber die heftigste Kulturkritik seiner Zeit findet sich in seiner Kritik des Christentums. Er betrachtet das Christentum als eine große Luge, denn das Christentum verneint das Diesseits und bejaht das Jenseits. Nach der Meinung Nietzsches ist der Kern des Christentums die christliche Moral, die er als ein Ressentiment der Schwachen betrachtet. Er kritisiert die Wissenschaft und zwar besonders die Philosophie, denn seit Sokrates sei der Glaube weit verbreitet, daß man nur mit der Vernunft die Welt erfassen konne. Dieser Logizismus birgt die Gefahr, daß man mit der Erkenntnis alles erklaren kann. In Bezug auf den Nihilismus kritisiert er die Logik, daß die Welt oder das Leben nur gultig sind, wenn man sie mit der Vernunft erkennt. Seine Kritik am Wahrheitsbegriff basiert auch auf dieser Logoszentrismuskritik. Er meint: "Die Welt erscheint uns logisch, weil wir sie erst logisirt haben." Ein Ausweg aus dieser problematischen Kultur kann die Natur sein, und die Bedeutsamkeit der Natur findet Nietzsche besonders in ihrem "Werden". Das Werden hat kein Ziel und keinen Wert, denn es fehlt etwas, woran es zu messen ware. Das Werden ist kein Scheinzustand, sondern die seiende Welt ist ein Schein. Nietzsche kritisiert Rousseaus Definition der Natur. Die so genannte "gute Natur" von Rousseau gebe es nicht, sondern die Natur sei so, wie sie ist. Die Natur ubertreibe, verzerre und lasse Lucken. Das sei die wahre Natur. Am Ende dieser Arbeit findet sich eine Beschreibung, wie ein Leben, d.h. ein anderer Name der Natur, durch die Kunst moglich sein kann. Nietzsche betrachtet die Kunst als ein Heilmittel gegen den Pessimismus, zu dem das absolute Wissen fuhrt. Wenn man die Grenzen der Logik erkennt, akzeptiert man die Phantasie der Kunst durch das Umschlagen der Wissenschaft in Kunst. In der Kunst spielt die Kreativitat, die man bei den alten Griechen sehr oft sieht, eine große Rolle. Besonders in der Musik als einer Art der Kunst entdeckt Nietzsche derartige Eigenschaften. Deshalb meint er, sei "die Aufgabe unserer Zeit: die Kultur zu unserer Musik zu finden." Und die Konsequenz jeder großen Kunstwelt sei eine Kultur.

펄스 모드 레이저 다이오드 드라이버 설계 및 개발

안철훈 경복대학 2004 京福論叢 Vol.8 No.-

빛의 파동성과 굴절, 그리고 빛에너지의 증폭성 등의 빛이 가지는 성질을 다양하게 응용한 광기술제품은 다양한 상업적 응용에 활용되고 있다. 반도체 레이저가 개발된 이후 이러한 광기술을 토대로 디지털 통신 및 산업용 마킹 또는 용접기의 급격한 수요 증가에 따라 국내에서도 레이저 다이오드의 수요가 급증하고 있다. 이러한 추세에 따라 국내에서도 각 연구소 및 다수의 광통신 모듈업체가 레이저 다이오드 개발을 추진 중에 있고 여기서 제작한 레이저 다이오드의 신뢰성 및 수명 테스트에 필요한 레이저 다이오드 드라이버의 필요성도 함께 증가하고 있다. 그러나 국내에서는 이 장비가 개발되어 있지 않기 때문에 외국산장비를 수입하여 사용하고 있는 실정이다. 현재 연속모드 제품은 주로 고출력 레이저에 사용되고 있고, 이것 역시 외국산이 주로 사용되고 있다. 따라서 고출력, 고속의 레이저 다이오드의 출력을 시험할 수 있는 장비의 개발이 시급한 실정이다. 본 논문에서 설계, 제작한 펄스 모드 레이저 드라이버는 레이저 다이오드의 발광, 실험, 평가 및 일반 산업용 레이저에 부품으로 사용할 수 있는 레이저 구동장치이다. 이번에 국산화장비로 개발된 본 제품은 정밀, 고속 스위칭을 실현할 수 있으며 향후 외국산 제품에 수입대체 효과가 적극 기여될 것으로 전망된다. A range of photonics products using the properties of light such as wave, refraction, amplification in a diverse manner are being utilized in commercial applications. As demand for digital communications, industrial marking and welding machine is sharply increasing on the basis of such photonics since semicon- ductor laser was developed, demand for laser diode is rapidly increasing in Korea, as well. According to this trend, domestic research institutes and optical communication module manufacturers are promoting laser diode development, and the reliability of such manu- factured laser diode as well as the need for laser diode driver necessary for life test are increasing however, it has not been developed in Korea yet so it is depending upon import product. Current products of sequential mode are mainly used in high output laser, but they are made in foreign countries, too. Therefore. development of testing equipment for laser diode with higher output and speed is urgently required of us. The pulse mode laser driver designed and made in this study is a laser driving unit available both as light emitting, experiment and evaluation of diode and a component for general industrial laser. This product developed this time as localized equipment implements precision and high-speed switching and is expected to positively contribute to substituting for foreign products.

양측 양성성대질환에 대한 연구

안철민,정덕희,한규철,박상준,이건영 대한이비인후과학회 1999 대한이비인후과학회지 두경부외과학 Vol.42 No.7

치성 각화낭에서 매복치 동반 여부에 따른 Ki-67 발현 비교

박철우,김도경,안상건,김수관,윤정훈 大韓顎顔面成形再建外科學會 2003 Maxillofacial Plastic Reconstructive Surgery Vol.25 No.1

Odontogenic keratocysts(OKCs) are frequently associated with erupted or impacted tooth. In such instances, the radiographic features simulate those of a dentigerous cyst. The purpose of this study was to evaluate a comparative immunohistochemical expression of Ki-67 as a proliferative marker in the OKC associated with or without impacted tooth. In addition, we have also been investigated with regard to the proliferative activity comparing the unilocular and multilocular varieties of the OKC. The material for this study consisted of thirty-two cases of OKCs (OKC with impacted tooth, n=16; OKC without impacted tooth, n=16) and ten cases of dentigerous cysts as a comparison. The results revealed that the proliferative activity of OKCs with impacted tooth was higher than those of dentigerous cysts. However, there was no correlation between Ki-67 immunoreactivity and association with or without impacted tooth in 32 cases of OKCs. In addition, this present study showed that there was no correlation between the unilocular and multilocular varieties of the OKCs imn proliferative activity.

國産 羊毛의 物性에 관한 硏究

楊澈坤,金洪均,安泰煥 成均館大學校 1981 論文集 Vol.30 No.-

Physical properties of wool are closely related to species of sheep, locality of production and feeding conditions. This paper describes an basic investigation of physical properties of Korean wool. Specific properties affected by crimp were also investigated. The experiment for physical properties of Korean wool was carried out by the conventional method and its for specific properties was done by load extension test. The results of those were as follows; 1. As for fineness values of wool, the quality numbers of Corriedale wool was 56's and its of Romney marsh wool was 46's-48's. 2. As for fineness, mean length, distribution of fibre length, strength and elongation of Corriedale wool were superior to those of standard wool. 3. It was found that strength per denier and elastic limit strength of both species were sligtly higher than its of standard wool 4. Uncrimping force was 1/15-1/21 of yield stress, Recovering of uncimping force and enegy in Korean wool was also significant. 5. Corriedale wool has good quality of which uncrimping force and energy would be changed by crimp. Characteristics of Corriedale wool; elasticity, softness and bulking capacity of wool itself were slightly higher than its of Romney marsh wool