한국인의 연, 망간, 알루미늄 및 실리콘의 혈중 농도

김정만,안정모,김원술,김정일,신해림,정갑열,김준연 동아대학교 산업의학연구소 2000 산업의학연구소 논총 Vol.- No.5

Blood Lead, Manganese, Aluminium and Silicon Concentrations in Korean Adults Jung Man Kim, Jung Mo Ahn, Won Sul Kim1), Jung Il Kim2), Hai Rim Shin, Kap Yeol Jung2), Joon Youn Kim Department of Preventive Medicine, College of Medicine and Industrial Medicine Research Institute. Dong-A University Department of Health Care, Handong University Sunlin Presbyterian Hotpital1) Department of Occupational Medicine, College of Medicine, Dong-A University2) 0bjectives : This study was performed to determine the reference values of blood lead, manganese, aluminium, and silicon in healthy adults. Methods : The subjects were 132 (67 male and 65 female), and classified to three age groups (≤39,40∼49, and 50≤). Hood lead, manganese and aluminium were analyzed by atomic absorption spectrophotometer, and blood silicon was analyzed by direct current plasma optical omission spectrometer. Results : Blood lead levels(geometric mean, S.D) were (3.49, 1.70) ㎍/dL in male auld (3.04, 1.65) ㎍/dL in female, but the difference is not significant, and there was no significant difference between age groups. Mean blood manganese level was 0.99±0.41㎍/dL, and there was no significant difference between sex or age groups. Mean blood aluminium level was 0.59±0.35㎍/dL and there was no significant difference between sex or age groups. Mean blood silicon level was 54.41±27.64㎍/dL in male and 43.34±23.51㎍/dL in female, and the level in male was significantly higher than that in female (p〈0.05). There was significant difference between age groups, and the oldest showed the highest level in male (p〈0.05), but no significant difference between age groups in female. Conclusions : Authors hope that this study would provide basic data for determininig reference values and evaluating health effects.

A Study on the Mythological Figures in the Poetry of W. B. Yeats

Lee, Jung-Won 국립7개대학공동논문집간행위원회 2003 人文學論叢 Vol.3 No.-

긴 작품활동 동안 예이츠의 관심의 초점은 항상 사람들에게 맞춰져 있었다. 이는 희곡이나 산문 작품에만 해당하는 말이 아니라 그의 시에도 마찬가지로 적용된다. 그의 시에 등장하는 인물 중에는 신화적 인물들이 상당수 있는데 예이츠가 정의하는 신화는 단지 신들의 이야기만이 아닌 보다 넓은 의미의 정의, 여러 세대를 두고 전해 내려온 전설적 인물들도 포함한다. 릴리안 페더는 예이츠에게 신화의 주인공들은 한 문명의 발단단계를 나타내며 그 소산물이라고 말한 바 있다. 한 시대의 특징들이 신화를 통해 전달되며 현대에 도전하는 시금석이 된다는 것이다. 예이츠의 신화적 인물들은 신화라는 단어가 일반적으로 연상시키는 그리스, 로마 신화보다도 그의 조국 아일랜드의 신화에서 나온 인물이 더 많다는 특성을 지니고 있다. 예이츠는 물론 아일랜드 인들만을 자신의 독자로 생각하고 글을 쓴 것은 아니지만 이들 인물들을 시에서 묘사함으로써 잘 알려지지 않았던 아일랜드의 문화적 유산을 성공적으로 보편화, 세계화하는 본보기를 보여주고 있다. 예이츠는 시에서 기존 신화를 단순히 인용하는 것이 아니라 자신의 필요에 맞게 한, 두 양상을 선택해 확대하고 증보하는 자유로운 상상력의 구사로 새로운 인물로 창조하는 면모를 보여준다. 또한 그에게 신화적 인물은 사라진 고대세계의 인물로만 존재하는 것이 아니라 현대사회에 재현될 수 있는 인물상으로 그려진다. 그리하여 신화적 영웅 쿠훌린은 1916년 혁명의 현장에 되살아나며 트로이의 헬렌은 그의 평생의 연인 모드 곤의 모습에 투영되어있다. 예이츠가 한 편의 시에서는 한가지 양상을 중점적으로 묘사했기 때문에 예이츠 시의 신화적 인물들은 여러 편의 시를 종합하여 고찰할 때 그 인물의 유형적 특성이 잘 드러난다. 본고에서는 사랑의 신 엥거스, 은둔현자 퍼거스, 시인 어쉰, 전사 쿠훌린, 절세미녀 트로이 헬렌의 다섯 인물의 분석을 통해 예이츠가 이들 신화적 인물들을 통해 구현하고자 했던 인간관을 살펴본다.

뇌졸증 후유증 환자에 대한 Idebenone의 효과와 안전성에 관한 연구

정원영,나정균,임건한 조선대학교 1994 The Medical Journal of Chosun University Vol.19 No.2

To evaluate the clinical efficacy and safety of Idebenone in 19 patients with the sequelae of the Cerebrovascular accidents(CVA). we conducted an open label trial of Idebenone for 8 weeks. The protocol consists of baseline. 4 weeks and 8 weeks evaluation. We evaluated psychic signs. subjective symptoms. activities of daily life and neurologic signs. The results were as follows : 1. Eight weeks after the trial. the majority of subjects(73.7%) were improved slightly or better. 2. At final evaluation, the slight improvement or better of psychic signs, subjective symptoms, activities of daily life and neurologic signs were 75.0%, 60.0%, 79.7% and 70.0%, respectively. 3. The adverse reactions were observed in 2 cases. one was headache and the other Gl trouble. There also were noticed transient elevation of SGOT/SGPT in one case. According to these results, it was concluded that administration of Idebenone after the acute phase of CVA is effective and safe.

정적-내연적 이론을 이용한 Cowl Top Otr 판넬 해석에 관한 연구

정동원,안현길,고형훈,문원섭 제주대학교 공과대학 첨단기술연구소 2005 尖端技術硏究所論文集 Vol.16 No.1

The static implicit finite element method has been effectively applied to analyze total cowl top otr panel stamping processes, which include the forming stage. Complicated and abnormal large size cowl top otr panel was analyzed by using commercial program called AutoForm. Analysis results examining possibility and validity of the AutoForm software and the factor study are presented. Furthermore, the simulated results for the total cowl top otr panel stamping processes are shown and discussed. Its application is being increased especially in the automotive industry for the cost reduction, weight saving, and improvement of strength.

저온저장과 Nisin처리가 물김치(개량 동치미)의 저장성에 미치는 영향

정동선,임경화,정원철 서울여자대학교 자연과학연구소 1997 자연과학연구논문집 Vol.9 No.-

천연항균물질인 nisin에 의한 물김치의 신선도 유지 효과를 조사하기 위하여 숙성된 물김치에 nisin을 첨가 후 저온저장하며 pH, 총산함량, 젖산균수, 대장균군수 등의 변화를 측정하였다. Nisin을 첨가한 물김치는 저장 20일까지 pH 감소 현상이 거의 나타나지 않은 반면, 4℃에 저장한 시험구의 pH는 서서히 낮아져 저장 20일에는 pH 3.41이었고, 2℃에 저장한 시험구의 pH도 약간씩 감소하였다. 물김치내 젖산균수는 4℃에서도 지속적으로 증가함과 더불어 산도도 증가하여 저장 20일에는 초기의 2배에 달하였다. Nisin첨가구의 젖산균수는 첨가 직후 균수의 급격한 감소현상이 있었으나 저장기간이 길어짐에 따라 서서히 증식하여 저장 13일 이후에는 초기 균수 보다 많아졌다. 그러나 nisin첨가구에서의 총산함량은 거의 증가하지 않은 것으로 보아, 물김치내 젖산균이 nisin에 대한 내성이 생겨 nisin에 의한 생육저해효과가 높지는 않으나 내성균주에 의한 산생성능은 약해진 것으로 보인다. 물김치의 저장 중 대장균군수는 산도가 높아짐에 따라 감소하여 4℃ 저장 13일이후에는 대장균군이 나타나지 않은 반면, nisin 처리구에서는 대장균군의 사멸속도가 매우 완만하게 나타난 점으로 보아 nisin 처리에 의해 산생성이 억제되어 신선도는 오래 유지되나 대장균군 억제효과는 낮은 것으로 나타났다. Effect of nisin to extend the freshness of mul-kimchi was investigated by measuring the change in pH, Total acidity, and microbial counts of mul-kimchi during preservation at low temperature. Preservation of mul-kimchi at 2℃ reduced the rate of pH decrease, but preservation at 4℃ resulted in a significant decrease in the rate of pH decrease and Total acidity increase in mul-kimchi. However, nisin treatment into mul-kimchi reduced acid production by lactic acid bacteria, and kept the freshness much longer than that of 2℃ preservation. Lactic acid bacteria in mul-kimchi contained nisin was significantly decreased in number right after addition of nisin, but it started to grow slowly and reached to the original number after 13days of preservation. Nisin also allowed coliforms to survive in mul-kimchi longer than in control. Therefore, nisin can be used to control the over-acidification of mul-kimchi, if only the initial contamination of colifoms is low.

Pseudomonas sp. JH007에 의한 DL-2-Chloropropionic Acid로부터 D-Lactic Acid의 생산

정자헌,황인균,방원기 한국미생물생명공학회 ( 구 한국산업미생물학회 ) 1996 한국미생물·생명공학회지 Vol.24 No.3

DL-2-chloropropionic acid로부터 D-lactic acid를 생산하기 위하여, 토양으로부터 DL-2-chloropropionic acid를 유일한 탄소원 및 에너지원으로 이용할 수 있는 균주 80여종을 분리하였으며, 분리균주들로부터 DL-2-chloropropionic acid로부터 D-lactic acid 생산성이 우수하며, L-lactic acid를 생산성이 우수하며, L-lactic acid를 생산하지 않은 균주 JH-007을 선별하여 Pseudomonas sp.로 동정하였다. DL-2-chloropropionic acid로부터 D-lactic acid를 생산하기 위한 최적 조건을 조사하기 위하여 3 g/l의 DL-2-chloropropionic acid가 포함된 LB 배지에서 배양하여 수확한 후 수확된 균체를 효소원으로 사용하였다. D-lactic acid 생산시 최적 반응액 조건은 125 mM sodium carbonate buffer에서 휴지균체 10 g/l와 3 g/l의 DL-2-chloropropionic acid를 사용할 때였으며, 최적 반응 pH는 10.0, 최적반응 온도는 30℃이었다. 최적조건하에서 반응액에 1 g/l의 DL-2-chloropropionic acid를 간헐적으로 첨가하여 5시간 반응시켰을 때 5.72 g/l의 D-lactic acid가 생산되었으며, 전환율은 98.4%였으며, 광학순도는 99.8%이었다. For the production of D-lactic acid from DL-2-chloropropionic acid, about 80 strains of bacteria capable of assimilating DL-2-chloropropionic acid as a sole carbon and energy source were isolated from the soil. JH-007 strain that showed the higest productivity of D-lactic acid and didn't produce L-lactic acid from DL-2-chloropropionic acid was selected from them and identified as Pseudomonas sp. The optimal conditions for the production of D-lactic acid from DL-2-chloropropionic acid were examined. The resting cells of JH-007 cultured in LB medium containing 3 g/l of DL-2-chloropropionic acid were used as an enzyme source. The reaction mixtures for the maximal production of D-lactic acid were consist of 10 g/l of resting cells and 3 g/l of DL-2-chloropropionic acid in 125 mM sodium carbonate buffer. The optimal pH for the reaction was 10.0 and the optimal temperature was 30℃. When 1 g/l of DL-2-chloropropionic acid was added intermittently to the reaction mixture under the above condition, 5.72 g/l of D-lactic acid was produced after incubation of 5 hrs. This amount of D-lactic acid corresponded to a 98.4% yields and the optical purity was 99.8%.

웹 기반 설계정보 관리 시스템의 구현

박정원,이경휘 대전대학교 산업기술연구소 2000 산업기술연구소 論文集 Vol.11 No.2

In this paper, we propose a web-based product data management system for product design processes of the S-industry. The system consists of a drawing management system, a configuration management system, and a BOM (Bill of Materials) management system. The drawing management system presents in a web browser and stores drawings and their related attributes. The configuration management system manages product configuration and engineering data in the format of 3D CAD data file. In the BOM management system, it presents, edits, and stores engineering BOM data. The PDM system has been implemented in a 3-tier client-server architecture, in which Internet Explorer 5.0, IIS 5.0, and SQL 6.0 were used.

활동혈압에 의한 Cicletanine의 강압효과 판정

정태기,김현대,류재춘,최석구,유원상 인제대학교 1993 仁濟醫學 Vol.14 No.4

Prostaglandin 합성을 촉진하는 새로운 강압약인 cicletanine의 강압효과를 진료실 혈압과 24시간 활동혈압으로 평가했을 때 상당한 차이를 보여 그 이유를 검토해 보았다. To evaluate antihypertensive effect of cicletanine with both clinic and ambulatory blood pressure monitoring, 10 male hypertensive patients were administered cicletanine, a new antihypertensive stimulating prostaglandin synthesis, in 100∼200 mg daily for 12 weeks. The following were the results. 1.Mean of clinic BP decreased from 161/98 mmHg to 153/98 mmHg. 2.Mean of ambulatory BP changed from 140/91 mmHg to 153/99 mmHg. 3.Side reactions were mild, namely indigestion and constipation. 4.Discrepancy between clinic and ambulatory BP were discussed. In conclusion cicletanine revealed slight antihypertensive effect with clinic blood pressure, but failed to confirm it with ambulatory blood pressure.

Method for Protection of Single‑Line‑Ground Fault of Distribution System with DG Using Distance Relay and Directional Relay

Jung‑Hun Lee,Min‑Su Park,Hong‑Seon Ahn,Kyung‑Won Park,Jun‑Seok Oh,Seung‑Gyu Jeon,Dong‑Kyu Kim,Jae‑Eon Kim 대한전기학회 2020 Journal of Electrical Engineering & Technology Vol.15 No.4

When large scales DG are connected to the distribution system of unidirectional power currents, bi-directional power currents are formed, making it impossible to use conventional overcurrent protection methods alone to detect and isolate fault sections for ground and short-circuit faults. To solve these problems, this study proposed the method of protection against single-line-ground fault of common neutral line multi-contact local power distribution system using distance relay and directional relay. The proposed protection method was applied to the common neutral multi-ground distribution system to validate the protection against single-line-ground fault through the PSCAD/EMTDC software package and efectively detect and isolate only the zone of single-line-ground fault without malfunctions.

李朝後期의 在來金融機構와 그 實態

鄭原圭 釜山敎育大學 1973 부산교육대학 논문집 Vol.9 No.1

In discussing the traditional banking system of Korea which had been existing until the time when the modern banking system started, the writer has divided the period concerned into two parts: the stage before the Port Opening Era in the Late Lee-Dynasty and the stage after it. The writer has already discussed Bo, Joe-jug, and Kae as the traditional banking system during the former stage in the paper titled "The Conditions of the Traditional Banking System in Korea". And in this study, the writer will discuss the actual status of Kaek-ju, Jeondang-po (the pawn shop), and the financing institutions prevailed in Kaesong area; which were kinds of banking institutions during the latter stage. Bo and Joe-jug had started in their original sense as the organizations aiming the relief of the poor and social welfare, but they were finally changed into the profiteering and exploiting organizations on account of the political and socail corruption, under such circumstances, Kae alone played its destined role as a common people's financing institution of mutual assistance. Kaek-ju; whose main business was a commission purchase and sale; was engaged in various side works such as transportation; ware house; hotel; and financial business of loaning, deposit, check issuing, etc. At the time of port opening, it was also in charge of the foreign trade. Seebyun, Kanbyun, Chege, etc., that were prevailing in Kaeseong area, were perfect financing institutions of special type. Jeondang-po, having been differentiated from the state of undifferentiation of commerce and finance, was specializing in finance. However, it emerged from the state of common people's financing system and was finally changed by Japanese into an institution of robbing Korean people of their land and property by a vicious means. So that in Korea; Kae and Kaekju, which had been doing the financing work, not as their main business, but as their side business; and Seebyun, Kanbyun, Chege, etc., that were popular financing systems in Kaeseong area; were playing the role of the common people's financing institution at the time when no banking system in modern sense was existing.