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이대희(D.H. Lee),차윤석(Y.S. Cha),이대근(D.K. Lee),이준식(J.S. Lee),임창율(C.Y. Lim),김영생(Y.S. Kim),배종렬(J.R. Bae) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.6
An innovative crankless steam engine utilizing the rack and pinion has been developed to improve the thermal efficiency of the engine. This newly developed crankless steam engine converted the thermal energy of steam to the electrical power output by way of the rack and pinion instead of the conventional crank. Straight motion due to the rack changed to the rotary motion by the pinion gear of the clutch. The crankless steam engine performance was tested with steam at 5 to 6.5 ㎏<SUB>f</SUB>/㎠ and the power output varied from 2.4 to 8.0 ㎾. It follows that the maximum efficiency of the crankless steam engine has reached 74 % when the steam inlet pressure is 6.5 ㎏<SUB>f</SUB>/㎠ and the power output is 8.0 ㎾. The maximum efficiency of this engine is more than 2 times as high as the existing conventional crank engine.
김영생 ( Young Saeng Kim ),구본호 ( Bon Ho Ku ),최유경 ( Yu Kyung Choi ),김종훈 ( Jong Hun Kim ),손희정 ( Hee Jung Sohn ),백소야 ( So Ya Paik ),이예리 ( Ye Ri Lee ) 대한내과학회 2009 대한내과학회지 Vol.76 No.5
젖유사샘(mammary-like glands)은 정상적으로 존재하는 외음부 피부 구조물이나 잘 알려져 있지 않다. 이 조직은 아직까지 기능이 불분명하고 에크린샘, 아포크린샘, 젖샘 등과 구별되는 특징을 가지고 있다. 1936년에 Greene에 의해 젖유사샘으로부터 유래한 샘암종이 처음 보고되었고, 이후 약 20여 증례가 보고된 바 있다. 이에, 저자들은 외음부에서 발생한 원발성 젖유사샘암종을 국내에서 최초로 보고하는 바이다. 외음문의 가려움증과 종괴를 주소로 내원한 62세 여자 환자로, 간과 뼈에 다발성 전이가 동반되어 있었다. 외음부와 간종괴의 조직 검사상 유방의 침윤성관암종(invasive ductal carcinoma)과 유사한 소견을 보였으며, 에스트로겐 수용체, 프로게스테론 수용체, HER-2, GCDFP-15 면역염색이 모두 양성이었다. 유방 초음파와 자기공명영상을 촬영하였으나 유방은 정상 소견을 보였다. 따라서 유방의 침윤성관암종과 유사한 조직 소견을 가지는 외음부에 발생한 원발성 젖유사샘암종이 간과 뼈에 전이된 것으로 진단하였다. 환자는 뼈 통증으로 방사선 치료를 받던 중 진단 7주만에 폐렴으로 사망하였다. Mammary-like glands are poorly recognized structures of normal vulvar skin. Here, we report the first case of primary mammary-like gland adenocarcinoma of the vulva in Korea and discuss the differential diagnosis and treatment of this rare tumor. A 62-year-old woman presented with an itching sensation and palpable mass of the vulva. Abdominal computed tomography showed multiple variable-sized nodules with peripheral rim enhancement in the liver. The pathology of the vulva and liver lesions was consistent with invasive ductal carcinoma of the breast, with positive staining for estrogen receptors, progesterone receptors, HER-2, and GCDFP-15. Ultrasonography and magnetic resonance imaging of the breast were normal. Given the histological findings in conjunction with the absence of a breast lesion, a diagnosis of primary mammary-like gland adenocarcinoma of the vulva was made. She died of pneumonia 7 weeks after the diagnosis. (Korean J Med 76:605-610, 2009)
김영생(Young Saeng Kim),이종원(Jong Won Lee),임병천(Byung Chun Yim) 한국유럽학회 2000 유럽연구 Vol.11 No.1
The social system and it`s dynamics bring the structural process changes enormously. They acquire competence to survive and remain competitive under the market economic conditions. One of the main problems during the recent development of financial institutions in Europe and Korea is that the organizational structure is not able to grow simultaneously and organizational forms are not adequate to the changed new environments. As results there are lags in the handing over informations and missing clear definition of areas of competence. Beside many technical changes by the implementation of new technologies the dynamic system theory especially self-organization was improved as successfiil also in financial institutions.