공기청정기의 일부 실내공기 오염물질 제거효율에 관한 연구

이태형,김윤신,홍승철,이철민,김종철,전형진,김중호 한국환경과학회 2005 한국환경과학회지 Vol.14 No.5

In this study, we investigated PM_(10), NO₂, and 1-hydroxypyrene(1-OHP) in urine at indoor environments which are 35 houses and 20 hospitals for using air cleaner and non-using air cleaner in Seoul metropolitan area and Kyoung-gi province from April, 2003 to February, 2004. Moreover, we examined effect of improvement for indoor air quality and health effect by concentration of 1-OHP also we investigated removal efficiency by air cleaner for PM_(10), NO₂, and 1-OHP that were 28.5%, 27.4%, and 42.1% respectively. Concentration of PM_(10), NO₂, and 1-OHP were 19.02±18.14μg/m³, 8.66±3.06ppb, and 0.19±0.18μg/g creatinine when air cleaner was no worked. The concentration for PM_(10), NO₂ and 1-OHP were 13.60+10.79μg/m³, 6.29±2.71ppb, and 0.11±0.10μg/g creatinine, respectively. It was significant statistically. Therefore, it is considered using the air cleaner to remove the partial pollutants in indoor environment and is positive effect for health.

Correction to: Mode‑Change PWM Method for Improving Efficiency of 3‑Level T‑Type PWM Converter

Lee Woo‑Cheol,Kim Tae‑Hun 대한전기학회 2022 Journal of Electrical Engineering & Technology Vol.17 No.1

조르주 바타유의 비정형 개념을 통한 물의 디지털이미지 정형화 연구

염동철 ( Dong Cheol Yoem ),오태원 ( Tae Won Oh ) 한국기초조형학회 2015 기초조형학연구 Vol.16 No.1

본 연구는 조르주 바타유의 ‘비정형’ 개념을 디지털이미지에 도입해 물이라는 소재가 정형화될 수 있는지 그 가능성과 작품사례를 통해 분석해 본 연구이다. 논리적 근거를 제시하기 이전에 바타유 사상의 기저가 되는 유물론과 거기에서 연결되는 비정형의 작동기제 중 ‘저급유물론’과 ‘엔트로피’의 속성을 바타유의 비정형 개념으로 타진해 보았다. 바타유의 비정형 개념은 부아와 크라우스의 「비정형: 사용자 안내서」에 수록된 내용과 크라우스의 해석, 그리고 바타유의 철학적 사유와 함께 분석해 보았으며, 바타유에 의하면 비정형이란 현실을 추상적 개념들에 따라 재조직하고 작은 의미의 단위들로 분해하는 범주들과 형태적 경계들을 파기해버리는 것이며, ‘의미 없는 비개념’이 곧 비정형이다. 따라서 비정형은 스스로는 아무 의미도 갖지 않으면서 기존하는 형태들이 지닌 의미들, 형식적 범주들의 작동을 와해시키는 ``임무``만을 가진 개념이다. 그러한 분석으로 비정형 개념은 디지털이미지와 자연스럽게 연결되고 구동될 수 있는 개념이다. 이러한 비정형의 물은 정형의 대상이 아니므로 디지털매체를 통해 정형화될 수 있는 소지를 내포하고 있는 소재이며, 디지털이미지작업을 통해 독창적인 형태를 구현할 수 있다. 그 예로 작품분석을 통해 각각 획득하고자 하는 이미지를 위해 일련의 설정된 환경과 정형화된 도구들을 수용하였음을 알 수 있었으며, 오태원의 미리 계획된 실험을 통해 투명한 수조와 LED조명이라는 정형화된 도구 사용이 물의 디지털이미지 형태를 훨씬 선명하게 하며 물 이미지를 더욱 부각 시킬 수 있었음을 알 수 있었다. 이 연구가 기존의 디지털 아트 작업을 통한 이미지는 유동적, 가변적, 비정형적일 것이라는 관념을 깨고 오히려 비정형의 매체를 통해서 비정형의 소재가 정형화된 형태를 구축할 수 있다는 새로운 패러다임을 제시한다. A Study on Digital Image Formalism of Water Through the Formless Concept of Georges Bataille This study aims to analyze the possibility of applying the ``formless`` concept of Georges Bataille to digital images and formalizing water as a material, based on the cases of related works. Prior to presenting a logical basis, materialism, which is a base of Bataille thoughts, and the properties of ``base materialism`` and ``entropy`` out of the formless mechanisms connected with materialism were considered as formless concepts. Bataille``s formless concept was analyzed along with the concepts included in the 「Formless: A User’s Guide」 written by Bois and Krauss, Krauss``s interpretation and Bataille``s philosophic thoughts. According to Bataille, ``formless`` is to re-organize the reality depending on abstract concepts and to destroy the categories and morphological boundaries subdivided into small semantic units, and ``meanless non-concept`` is exactly formless. Thus, formless does not have any meaning itself and its concept only performs the ``duty`` to collapse the meanings of the existing forms and the operation of formal categories. Based on that analysis, the formless concept can be naturally interlinked with digital images and operated. In other words. This formless water is not subject to formalism and thus this contains the possibility of being formalized through digital media and can create its own unique form through digital imaging. As an example, it was found that for images to obtain, individual works accepted a series of set environments and standardized tools, and Oh, Tae-won``s previously planned experiment showed that using the standardized tools like transparent water tank and LED lighting could make the digital image of water much clearer, or emphasize the image of water more. In conclusion, this study breaks the idea that digital art images would be fluid, variable and formless and presents a new paradigm that formless materials can create formalized forms through formless media.

조기위암의 임상적 연구

박태준,양은수,류종철,박태군,이희승,신원창,이진호,김관엽 인제대학교 1994 仁濟醫學 Vol.15 No.1

1989년 9월부터 1993년 7월까지 인제대학교 의과대학 상계백병원에서 실시한 위내시경 소견이 조기위암이며 내시경 직시하 생검결과 선암으로 판명되어, 근치적 위절제술을 시행받은 23명의 환자에서 임상적 특징을 알아보고, 문헌고찰과 함께 보고하는 바이다. The incidence and mortality rate of stomach cancer ranks well ahead of all malignancies in Korea. The prognosis is excellent in early gastric cancer of which the overall 5 years survival rate of 85∼95% is comparative with that of advanced gastric cancer of 15∼49%. So early detection with very sensitive mordality of gastroscope and surgery is the only premise to decrease the mortality rate of gastric cancer. This report deals with the clinical aspects of 23 cases of early gastric cancer, which were confirmed with histopathologic examination of resected stomach during the 4 years from September 1989 to July 1993 at Sanggye Paik hospital, Seoul, Korea. Out of 23 cases of early gastric cancer, 14 cases were male, 9 cases were female, and the male to female ratio was 1.6 : 1. The most common type of early gastric cancer was talc type(43.5%), IIc and its combined type comprised most of them(87.0%). The most prevalent sloe of lesion was gastric angle(43.5%) and the most common direction was lesser curvature(73.9%) 19 cases of 23(78.3%) were between 1∼3cm in size, and there was no statistical significance between the size of the lesion and lymph node metastasis. Of the 9 cases with mucosal lesion, there were 2 cases with lymph node metastasis(22.2%), but 7cases(50.0% ) of 14 cases with submucosal lesion presented lymph node metastasis. Diagnostic accuracy of endoscopy on detection of early gastric cancer was 17 cases(73.9%) of total 23 cases in our study. As with other report, histopathulogic examination of resected stomach revealed adenocarcinoma, tubular type as the most common type. Frequent complaint of patients with early gastric cancer was epigastric pain(65.2%), and duration of the symptom was less than 12 months in 17 cases(73.1%) of 23 patients with early gastric cancer.

동종 골수이식 후 만성 이식편대숙주질환과 동반되어 신증후군으로 발현된 IgA 신병증 1예

정철권,김현수,박준성,정성현,조도연,최진혁,남동기,임호영,김명성,신규태,임현이,김효철 대한조혈모세포이식학회 1999 대한조혈모세포이식학회지 Vol.4 No.2

동종 골수이식 후 발생하는 신기능부전은 원인이 다양하여 감별에 어려움이 있다. 만성 GVHD는 흉선의 기능저하에 따른 면역관용의 실패로 발생되는 자가면역현상에 의해 발생되는 것으로 알려져 있으며 드물게 신장을 침범하여 신증후군을 일으키기도 한다. CaA의 용량을 줄이거나 투약중지 후 발생한 만성 GVHD에 동반된 신증후군의 경우 조기에 신조직검사를 시행하여 감별진단하고 CsA의 용량을 증량하거나 재투약하여 좋은 치료 결과를 보일 것으로 기대된다. 저자들은 문헌고찰을 통해 동종 골수이식 후 발생된 신증후군이 유사한 임상양상을 보이며 발생기전에 만성 GVHD와 자가면역현상이 연관되어 있음을 확인하였으며 동종 골수이식 후 신증후군의 임상양상을 보이는 환자에서 병리조직학적으로 lgA 신병증을 진단하고 이러한 lgA 신병증이 발생기전에 만성 GVHD와 자가 면역현상이 연관되어 있을 가능성을 최초로 확인하였으며 CsA를 이용하여 성공적으로 치료한 경험을 하였기에 보고하는 바이다. Renal insufficiency is occasionally encountered in allogeneic bone marrow transplantation and its cause is difficult to ascertain. Chronic graft-versus-host disease (GVHD) related to thymic dysfunction is immune-mediated and involves autoreactivity of T-lymphocytes derived from donor marrow to recipient's major histocompatibility complex(MHC) minor antigens. The clinical mainifestations of chronic GVHD are similar to those of autoimmune disease but kidney involvement is rare. Few cases of nephrotic syndrome with membranous nephropathy or minimal change nephrotic syndrome have been reported to be associated with chronic GVHD in allogeneic bone marrow transplant recipient especially after cyclosporine A(CsA) withdrawal, and these cases have responded well to CsA. Therefore, it is prudent to differentiate the cause of post-transplant renal insufficiency using renal biopsy and to start CsA in a case of nephrotic syndrome associated with chronic GVHD as early as possible. We report a case who had a massive proteinuria during the post-allogeneic marrow transplantation period. The cause of nephrotic syndrome was diagnosed as IgA nephropathy by renal biopsy. The patient was successfully treated with reintroduction of CsA.

영도구 지역의제사업 추진을 위한 모범적 방안과 장기적 전망

문태영,주승철 고신대학교 영도발전연구소 2001 영도연구 Vol.3 No.-

The local agenda 21 is at the beginning stage at the district of the islet Youngdo in Busan metropolitan city. Some important points should be considered when the district government carries on the local agenda 21. Although it is important to produce a concrete document for local agenda, before the district government pushes for the visible result in administration, the district government should wait and encourage the community to build up the capacity in social and environmental movement. Local enterprises and citizens are equally important components to process local agenda 21 with the district government. Also the individual agenda should be drawn carefully in premise of practical application by and for community, rather than for impractical but fashionable sentences. Several steps and perspectives were discussed and provided as a modest model for the district government to benchmark between practice and model.

수소에 의한 황산구리의 환원속도

이명철,신창섭,이태희 연세대학교 산업기술연구소 1986 논문집 Vol.18 No.1

Cupric sulfate powder of average diameter 2㎛ was reacted with hydrogen at the temperature range of 240-350℃ in a fixed bed reactor and concentration of effluent sulfur dioxide was measured. Experimental results showed that sulfur dioxide regeneration efficiency of 93.6% was maximum at 300℃. The reaction of cupric sulfate with hydrogen was able to be interpreted by the shrinking unreacted core model with chemical reaction as rate controlling step. The reaction was found to be first order for the hydrogen concentration and the reaction rate constant was k=0.0165 exp (-2047/RT).

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

開化期 體育敎育思想에 관한 史的 考察

黃喆文,黃太相 釜山大學校 師範大學 1992 교사교육연구 Vol.24 No.-

The results of this study can be summarized as below. The first characteristics of the introduction period is the educational trinity of the head, the heart and the health. The origin and specification of this trinitism can be traced to the educational doctrine of Ko Jong of the Lee Dynasty to exercise the modern types of education. And the health of the trinity was expressed as the raising of life by Young-Hyo Park, the raising of life or conditioning of life by Kil-Jun You, and the raising of body in the educational doctrine. And Ki Lee defined the concept of 'gymnastics' and 'physical exercises'. Therefore, the terms on gymnastics was not unified but somehow established before 1900s. The Ul-Sa Compulsory Treaty made the safety of the nation of Korea through the establishment of the strong health and body of the Korean people urgent. Second, the thoughts of the introduction era have the characteristic of functionalism in the textbooks of gymnastics. It is stated in the textbook of the outlines of the rules for elementary schools that the purposes of the course of gymnastic exercises are the balanced growth of body and health, the brightness and rigidity of the spirit, and the raising of the habit of discipline obedience. It is the first definition of the purposes and characteristics of physical exercises. Thought incomplete, it was a modern concept on physical exercises. Third, the importance of the education related to physique athome gave birth to the physical exercises oriented, and exercise sand nutrition oriented thoughts. Gun Lee, Sung-Ja Whang et al. criticized the traditional teachings of confucianism. Myung-Jun Kim, Dong-Jok Lew took emphasis on exercises, and Cheol-Su Kim detailed the education on physique in [the methods of home education] systematically. In relation to physical exercises nutrition was highly treated and the relation between them was studied. Bong-Kwan Kim, Kew-Young Lee, Ki-Ung Kim, Bong-Hun Park et al. mentioned the element of nutrition required by human body, the primary content of which was mainly about the kinds and effects of the elements of nutrition.

내포 병행 프로그램의 수행중 자료경쟁 탐지를 위한 수정된 SNR 레이블링 알고리즘

김영철,송태섭 진주여자전문대학 1997 論文集 Vol.20 No.-

Detecting races is important for debugging shared-memory parallel programs, because the races result in unintended nondeterministic executions of the programs. Previous monitoring techinque SNR for on-the-fly race detection show a little fault. So this paper presents enhenced SNR labeling algorithm. The program condered in this paper have nested parallelism and no other inter-task coordination