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      • 한국산 하루살이목(目)의 카탈로그

        윤일병,배연재,전동준 고려대학교 한국곤충연구소 1994 昆蟲硏究誌 Vol.20 No.1

        韓國産 하루살이目의 카탈로그. 裵淵宰 · 尹一炳^1 · 田東埈^2 (서울女子大學校, ^1高麗大學校 生物學科, ^2러시아科學院 動物學硏究所) 昆蟲硏究誌, 20: 31~50, 1994. 韓國産 하루살이目의 關한 硏究는 南北韓에 걸친 綜合的인 硏究가 이루어지지 못하였고, 1940년 以來 各種 文獻에 記錄된 種들에 있어서도 分類上 혹은 命名上 變動이 많았으나 이를 體系的으로 收錄하지 못하였다. 이 論文에서는 種合的인 文獻 및 模式標本 調査를 통하여 다음과 같이 韓國産으로 記錄된 56種의 命名상 有效한 種들에 대한 카탈로그를 작성하였다. Acerella longicaudata(U′eno), *Ameletus costalis (Matsumura), A. montanus Imanishi, *Baetiella japonica (Imanishi), *B, tuberculata (Kazlauskas), *Baetis thermicus U′eno, Bleptus fasciatus Eation, Choroterpes altioculus Kluge, Cincticostella castanea (Allen), C. tshernovae(Bajkova), * Cinygmula grandifaliz Tshernova, *C. hirasana (Imanisht), Cloeon dipterum (Linnaeus), Drunella aculea (Allen), *D. cryptomeria (Imanishi), *D. lepnevae (Tshernova), D. triacantha (Tsher-nova), *D. trispina ezoensis (Gose), Ecdyonurus bajrovae Kluge, E. dracon Kluge, **E. Joernensis mon-golicus Bajkova & Varychanova, E. kibunensis Imanishi, E. levis (Nava′s), E. scalaris Kluge, **E. subspinosa (Braasch & Solda′n), Epeorus curvatulus Matsumura, *E. hiemalis Imanishi, E. latifolium Ue′no, E. pellucidus (Broadsky), *Ephemeralla aurivillii Bengtsson, *E. imanishii Gose, E. keijoensis Allen, *E. notofascia Yoon & Base, Ephemera orientalis McLachlan, E. separigata Bae, E. strigata Eaton, Ephoron shigae (Takahashi), Heptagenia guranica Belov, H. kihada Matsumura, *H. Kyotoensis Gose, *Iron aesculus (Imanishi), *I. koreanicus Braasch & Solda′n, I. maculatus Tshernova, Isonychia japonica (Ulmer), **I. ussurica Bajkova, Paraleptophlebia chocolata Imanishi, *Potamanthellus rarus tiunova & Levanidova, **Potamanthus formosus Eaton, P. yooni Bae & McCafferty, *P. luteus oriens Bae & McCafferty, *Phithrogena japonica Ue′no, Rhoenanthus coreanus (Yoon & Bae), *Serratella setigera (Bajkova), Siphlonurus chankae Tshernova, *S, sanukensis Takahashi 및 Uracanthella rufa (Imanishi). 별표한 種들은 幼蟲만이, 쌍별표한 種들은 成蟲만이 韓國産으로 記載되었다. (C. tshernovae와 E. keijoensis는 암컷 成蟲과 幼蟲만이, 그리고 P. luteus oriens는 亞成蟲만이 韓國産으로 記載되었다.) 다음 10종은 韓國에서 幼蟲만이 記載되었고, 아직 命名上으로 留保된 未決定種으로 남아있다. Baetis Kua: Yoon & Bae, Baetis nla: Imanishi, Brachycercus Kua: Yoon & Bae, Caenis Kua: Yoon & Bae, Cinygmula Kua: Yoon & Bae, Cinygmula na: Imanishi, Ecdyonurus Kub: Yoon & Bae, Ecdyonurus na: Imanishi, Paraleptophlebia nb: Imanishi 및 Rhithrogena na: Imanishi. 각 種에 있어서 原記載 및 再記載 文獻, 記載에 使用된 標本, 分布, 模式標本에 대한 情報, 異名과 命名上의 變動을 年代順으로 整理하였다. 附錄으로 南韓種만의 checklist와 分類學的 變動 및 國名의 變動事項을 表로 作成하였다. Mayflies (Ephemeroptera) of Korea have been described in various literatures since 1940, but there have been many taxonomic or nomenciatural changes in the members of the order. A comprehensive literature and type material review of the Ephemeroptera resulted herein the recognition of 56 nomenclaturally valid species previously described from Korea : Acerella longicaudata (Ue´no), ^*A meletus costalis (Matsumura), A. montanus Imanishi, ^*Baetis thermicus Ue´no, Bleptus fasciatus Eaton, Choroterpes altioculus Kluge, Cincticostella castanea (Allen), C. tshernovae (Bajkova), ^*Cinygmula grandifolia Tshernova, ^*C. hirasana (Imanishi), Cloeon dipterum (Linnaeus), Dyunella aculea (Allen), ^*D. cryptomeria (Imanishi), ^*D. tepnevae (Tshernova), D. triacantha (Tshernova), ^*D. trispina ezoensis (Gose), Ecdynurus bajrovae Kluge, E. dracon Kluge, ^*^*E. joernensis mongolicus Bajkova & Varychanova, E. kibunensis Imanishi, E. levis (Nava´s), E. scalaris Kluge, ^*^*E. subspinosa (Braasch & Solda´n), Epeorus curvatulus Matsumura, ^*E. hiemalis Imanishi, E. latifolium Ue´no, E. notofascia Yoon & Bae, Ephemera orientalis McLachlan, E. separigata Bae, E. strigata Eaton, Ephoron shigae (Takahashi), Heptagenia guranica Belov, H. kihada Matsurnura, ^*H. kyotoensis Gose, ^*Iron aesculus (Imanishi), ^*I. Koreanicus Braaich & Solda´n, I. Maculates Tshernova, Isonychia japonica (Ulmer), ^*^*I. Ussurica Bajkova, Paraleptophlebia chocolate Imanishi, ^*Potamanthellus rarus Tiunova & Levanidova, ^*^*Potamanthus formosus Eaton, P. yooni Bae & McCafferty, ^*^*P. luteus oriens Bae & MeCafferty, ^*Rhithrogena japonica Ue´no, Rhoenanthus coreanus (Yoon & Bae), ^*Serratella setigera (Bajkova), Siphlonurus chankae Tshernova, ^*S. sanukensis Takahashi, and Uracanthella rufa (Imanishi), The asterisked species were known to larva only from Korea, and the double asterisked were adults only (C. tshernovae and E. keijoensis were females and larvae only, and P. luteus oriens was subimagos only), The following 10 species were known to larvae only from Korea, but have not been determined: Baetis Kua: Yoon & Bae, Cinygmula Kua: Yoon & Bae, Baetis nla: Imanishi, Brachycercus Kua: Yoon & Bae, Caenis Kua: Yoon & Bae, Cinygmula Kua: Yoon & Bae, Cinygmula na: Imanishi, Ecdyonurus Kub: Yoon & Bae, Ecdyonurus na: Imanishi, Paraleptophlebia nb: Imanishi, and Rhithrogena na: Imanishi. For each species, original and secondary sources of the descriptions, materials used, type information, distributions, synonyms, aid nomenclatural changes were chronologically provided. A checklist of the Ephemeroptera previously recorded from South Korea was appended with their proposed Korean name.

      • KCI등재

        암에르고미터 운동시 여유심박수에서의 신체작업능력(PWC%HRR)을 이용한 최대산소섭취량 추정에 관한 연구

        정성태,전태원,정덕조,정영수,엄우섭,이동기,윤호섭 한국운동과학회 2000 운동과학 Vol.9 No.1

        암에르고미터 운동시 여유심박수에서의 신체작업능력(PWC%HRR)을 이용한 최대산소섭취량 측정에 관한 연구 운동과학. 제 9권 제 1호. (1)-(12), 2000. 본 연구의 목적은 암에르고미터 운동시 여유심박수에서의 신체작업능력(PWC%HRR)을 이용해 최대산소섭취량(O₂_(max))을 추정하는데 있어 그 타당성을 보는데 있다. 이를 위해 본 연구에서는 건강한20대 남자 대학생(21.1±2.77)20명이 참가 하였다. 이들의 안정시 심박수는 5분간 EKG로 측정되었고, 최대산소취량은 암에르고미터에서 50rpm의 속도로 20W에서 운동을 실시하고 매 3분 간격으로 10W씩 증가시켜 피험자가 탈진시까지 운동을 지속시켰다. 여유심박수 계산에 있어서 최대심박수는 수식(HRmax = 210 - age)으로 계산되었다. PWC%HRR의 계산은 점증부하 운동상에서 120≤R≥160의 범위에 발견된 HR과 O₂의 관계식(Y=bx+a)에 의하였다. 강도별 상대적 백분율 범위는 50∼85%사이였으며, 비교대상은 PWC%HRR, O₂R, O₂_(max)이었다. 그 결과 다음과 같은 결과를 얻었다 첫째, %HRR과 O₂R, O₂_(max)간의 회귀분석결과 %HRR은 O₂_(max)보다 O₂R에 가까웠다. 둘째, 각 강도별 PWC%HRR과 O₂R, O₂_(max)간에는 통계적으로 유의한 차이는 없었으나, PWC%HRR은 O₂_(max)보다 O₂R에 보다 가까웠다(P<.05). 셋째, O₂_(max)의 실측치와 PWC%HRR = O₂R에 의한 추정치 사이에는 모든 강도에서 통계적으로 유의한 차이가 없었으나, 상관관계는 PWC%HRR에서 가장 높았다(P<.05). 이상의 결과를 종합해 볼 때 암에르고미터 운동검사 과정에서 만족할 만한 O₂_(max) 발견하지 못했더라도 최소한 60%HRR에 해당하는 심박수가 발견될 때까지 운동을 수행하였다면 일련의 방식에 의해 O₂_(max)의 추정이 가능하다고 본다. The study on Estimation of maximal oxygun uptake through PWC%HRR during Arm Ergometer Exercise. Exercise Science, 9(1): 1-12, 2000. The purpose of this study was to evaluate the validity for estimation of maximal oxygen uptake through PWC%HRR during Arm Ergometer Exercise. The subjects of this study were 20 healthy males(21.2±2.77yrs) college students. Resting heart rate of subjects were recorded by EKG for 5min. the maximal oxygen uptake was determined until subjects were exhausted. The first stage was performed 50rpm, 20W, and then was increased by 10W every 3 minutes on the arm ergometer. HRmax was determined by a numerical formula of HRmax = 210-age. PWC%HRR was assessed by relative equation (Y=bX+a) of HR and V˙O₂ observed in range 120≤R≥160 during the exercise test. Range of relative percentage was between 50% and 85%, comparison factor was examined among PWC%HRR, % V˙O₂R and % V˙O₂_(max). The results of this study are as follows : 1) Result of the regression analysis among PWC%HRR, % V˙O₂R and % V˙O₂_(max), %HRR was equivalent to % V˙O₂R rather than V˙O₂_(max). 2) No significant difference was observed among PWC%HRR, % V˙O₂R and V˙O₂_(max) in the all intensity, But the PWC%HRR was closer to % V˙O₂R rather than V˙O₂_(max)(P<.05). 3) No significant difference was the actual V˙O₂_(max) and the estimation value by PWC%HRR = % V˙O₂R in the all intensity, and the correlation analysis was the most correlated at the estimation value by PWC%60HRR. It was concluded that if the satisfactory V˙O₂_(max) was not found in Arm Ergometer exercise test but heart rate corresponded to 60%HRR, V˙O₂_(max) can be estimated by a series of equation.

      • SCOPUSKCI등재
      • 변형된 트랜스듀서 및 FM을 이용한 이식형 인공중이 시스템의 전력효율 개선

        윤영호,원철호,송병섭,정영숙,김명남,박세광,이상흔,조진호 경북대학교 전자기술연구소 1997 電子技術硏究誌 Vol.18 No.2

        In design of implantable middle ear system, it is necessary that the system has a high power-transfer efficiency because die internal circuit of the system has no power source. The FM transmission method transfers the signal power more efficiently than AM method because AM signal has large carrier component which act as the loss. Therefore, an implantable middle ear system using FM transmission and receiving method is proposed. And the new shape of vibrating transducer which vibrate more efficiently than the conventional type was designed. This tranducer is consisted of coil and small T-type cylindrical permanent magnet. The differences between conventional methods and proposed methods are investigated and compared through quantitive analysis. The advantages of proposed methods are proved by experiments.

      • KCI등재

        LPG 탱크로리 수송중 위험성 평가에 관한 연구

        이재준,김윤화,엄성인,고재욱,백종배,윤성렬 한국산업안전학회 1997 한국안전학회지 Vol.12 No.4

        Demand of LPG and LNG will increase continuously due to high calories, clearness, and convenience for usage. These gases are used widely for power plants, industrial plants, and domestic fuel. But accidents related with gas are increasing in proportion to increment of gas usage. Especially, LPG has high ignitability due to weak dispersion to air and accumulation at low place because LPG is heavier than air. There are many hazards during transportation as well as production, storage, and usage of LPG. Commonly, tank lorry is used for inland transportation of LPG. If tank lorry were to raise leakage incidents and then LPG released during transporting, the accidents cause serious effects on the environment as well as human damage of surrounding area. In this study, therefore, hazards which cause LPG of tank lorry to leak during transportation were identified and risk of LPG transportation was assessed quantitatively. Also, the result of this study might be a useful measure for predicting damage and preparing safe transportation strategies of LPG tank lorry.

      • KCI등재

        복사전열 가열로 튜브의 파손방지에 대한 연구

        윤기봉,심상훈,유홍선,오현환 한국산업안전학회 1998 한국안전학회지 Vol.13 No.1

        Radiant heater tubes with an inside burner are designed to transfer the heat generated from the burner to the outside of the tube by radiation. Hence, tube metal must suffer high temperature of approximately 900-1000℃. The radiant tube is usually manufactured by centrifugal casting with high Ni-Cr alloys. In this study, failure analysis results of the radiant tube arc reported. Failure mechanism of the tube was investigated by visual observation of the failed tube, metallographic study of the cracked region and chemical analysis of tube metal and oxide scales. It was argued that the main cause of the cracking is repeated oxidation of the tube metal located beneath the thick oxide scale. Oxidation was caused by abnormally high operating temperature which can be verified by aged microstructure and internal void formation.

      • KCI등재

        1Cr-0.5Mo 강 용접부 균열의 고온파괴거동 연구

        이해무,윤기봉,신규인,최현창,박재학 한국산업안전학회 1997 한국안전학회지 Vol.12 No.2

        Fracture behavior of ex-serviced 1Cr-0.5Mo steel was measured at room(24℃) and elevated(538℃) temperature and compared with that measured with virgin 1Cr-0.5Mo steel. Compact C(T) specimens were machined from the base and welded test materials. In case of the C(T) specimens of the weld, fatigue precrack was introduced along the fusion line so that following crack growth should occurs along the region of heat affected zone. It was observed that the J-R curve of the serviced material was significantly lower than that of the virgin material at room temperature. Brittle fracture was observed in the serviced material. On the other hand, at elevated temperature no noticeable difference was found between the J-R curves of the virgin and the serviced material. The measured J-R curves were also compared with those of the 1.25Cr-0.5Mo steel obtained from the other literatures. Optical microscopy and SEM examination of the serviced material reveal the carbide in/along the grain boundary which shows material degradation due to long-term usage. An example of application of the measured J-R curves is shown.

      • KCI등재

        SUS 300 계 스테인리스강의 표면특성에 관한 연구

        이경구,윤동주,기회봉,최답천,이도재 한국열처리공학회 1999 熱處理工學會誌 Vol.12 No.1

        In the present study, oxidation behavior of 304 and 316 stainless steels Was investigated. After solution treatment, specimens were polished up to 1㎛ Al₂O₃grade and then subjected to oxidation treatment in dry air. The range of temperature was used for oxidation treatment at 300℃∼500℃ and TEM was used for analyzing the components and structure of oxide film. Also, these results were compared with the results of ESCA and TG. According to the results of TEM analysis, it was found that Cr oxide film was formed on top of the surface after room temperature oxidation but amorphous Fe oxide was formed on top of the surface and polycrystalline (Cr,Fe)₂O₃was formed below the amorphous Fe oxide layer after 500℃ oxidation treatment. The oxidized specimens at 500℃ showed that 316 stainless steel resists more strongly to grain and grain boundary oxidation than 304 stainless steel. These results suggested that Mo component resolved in 316 stainless steel matrix suppressed the formation of Cr carbide which may results in local Cr deplete area.

      • KCI등재후보

        당뇨병성 경화부종 1 예

        이태희,윤재영,최유창,강철민,정민영 대한내과학회 1989 대한내과학회지 Vol.37 No.1

        Scleredema is a rare collagen disorder clinically characterized by marked non-pitting induration of the skin. There are two types: the classic postinfectious type and that associated with diabetes mellitus. We present a case of scleredema developed on the nape, upper portion of the back and both shoulders in a 71-year-old male who has suffered from diabetes mellitus for the past 20 years.

      • 배추흰나비 변태에 따른 중추신경계의 형태학적 변화

        이봉희,심재원,윤혜련,권도우 고려대학교 한국곤충연구소 1992 昆蟲硏究誌 Vol.18 No.1

        배추흰나비 변태에 따른 중추신경계의 형태학적 변화. 이봉희, 심재원, 윤혜현, 권도우 (순천향대학교 자연광학대학 생물학과), 昆蟲硏究誌. 18 : 55 ~ 62, 1992. 곤충 변태에 따른 중추신경계의 형태학적 변화가 배추흰나비(Pieris rapae)5령유충, 1일용, 2일용, 그리고 1일성충에서 조사되었다. 변태에 따라 중추신경계는 인접 신경절사이의 신경삭(nerve connective)이 짧아지거나 길어졌고 인접 신경절사이의 신경삭이 완전히 제거되어 신경절끼리 융합하기도 하였다. 또한 대부분의 신경절내에서도 큰 변화가 수반되었다. 이와같은 중추신경계의 형태학적 변화는 중추신경계의 길이가 상당히 짧아지는 것이 가장 큰 특징이었다. 중추신경계의 길이 감소는 전 변태기 동안 일어났지만 특히 5령유충 중추신경계는 변태기간 동안 계속 길이가 감소하여 1일성충에서는 48%가 감소되어 있었다. 신경절은 또한 서로 융합하여 특히 thoracic neuron center와 abdominal neuron center를 형성하였다. thoracic neuron center는 1일용과 2일용 사이의 변태기간 동안 제1과 제2 복부신경절이 먼저 융합하고 이어서 2일용 이후의 용기에서의 변태기간 동안 융합된 제 1, 2 복부신경절이 제 2와 제 3 흉부신경절과 융합되어있는 제 7과 제8복부신경절은 1일성체로 되는 용기의 변태기간동안 제6복부신경절과 융합하여 abdominal neuron center를 형성하였다. 중추 신경계를 구성하는 모두 13개의 신경절은 주로 용기의 변태기간 동안 구조적으로 분화하여 성충의 중추신경계를 형성하였다. The morphological changes occurring in the central nervous system of Pieris rapae have been investigated during metamorphosis from the fifth instar larva to the 1-day-old adult. These changes consist of (1) shortening or lengthening of the connectives between the neighbouring ganglia, (2) fusion of adjacent ganglia, and (3) sizable changes within the various ganglia. A considerable shortening of the central nervous system occurs through the metamorphic periods which were investigated in this experment; in particular when the fifth instar larva changes to the prepupa and the 1-day-old pupa to the 2-day-old pupa. The 48% of total length of the central nervous system of the fifth instar larva decreases in the 1-day-old adult. The 1st and 2nd dbdominal ganglia fuse completely during a metamorphic period between the 1-day-old pupa and 2-day-old pupa. The fused 1st and 2nd abdominal ganglia fuse again with the 2nd and 3rd thoracic ganglia between the 2-day-old pupa and the 1-day-old adult, forming the thoracic neuron center. The previously fused 7th and 8th abdominal ganglia in the fifth instar larva fuse completely with the 6th abdominal ganlion between the 2-day-old pupa and the 1-day-old adult, forming the abdominal neuron center. The extensive differentiaton of the various ganglia, especially cerebral ganglion, occurs mostly during the pupal stages.

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