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전철호,장길홍 동아대학교 공과대학 부설 한국자원개발연구소 1993 硏究報告 Vol.17 No.2
The use of a combined cycle leads to an updating of power output, at the same time, increasing power plant efficiency. In this paper, the dissipation energy was calculated from two conventional and combined cycle processes, and then the efficiencies of many types of the combined cycle were compared. The efficiency of combined cycle power plant is evaluated by given data and its performance characteristics from the simulation. As a result, the total efficiency is increased as the compression ratio is increased.
정지용,윤나라,강대웅,오종찬,장재현,선길홍,박경희,정종훈,김현리 朝鮮大學校 附設 醫學硏究所 2005 The Medical Journal of Chosun University Vol.30 No.1
Aplastic anemia is a disease characterized by pancytopenia in the peripheral blood and hypocellular bone marrow with the fatty infiltration. The causes of the acquired aplastic anemia were usually related to drugs and immune-related diseases. A 34-years old man was admitted due to general weakness. He has been going hemodialysis for 2 years because of end stage renal disease (ESRD) due to chronic glomerulonephritis. At admission, laboratory tests showed hemoglobin 6.2 g/dL, hematocrit 18.0 %, WBC 5,710mm (neutrophil 71.8%, lymphocyte 19.1%, monocyte 5.9%), reticulocyte 1.9%, platelet 93,000/mm, Fe 12.8 ug/dL, TIBC 204 ug/dL, ferritin 941.47 ng /ml, haptoglobin 0.72 g/L, vitamin B12 508.17 pmol/L, folate 24 ng/mL, total protein 6.54 g/dL, albumin 3.76 g/dL, Alk. pohsphatase 79 IU/L, AST 30.0 IU/L, ALT 39.7 IU/L, total bilirubin 0.57 mg/dl, BUN 79.4 mg/dl and creatinine 10.18 mg/dl. Peripheral blood smear showed the normocytic normochromic anemia with anisocytosis. Anemia was diagnosed but it was irresponsive to the recombinant human erythropoietin (EPO) and blood transfusion. In the bone marrow aspiration smear were there the hypoplastic myeloid and erythroid precursors. The bone marrow biopsy section showed the hypoplasia of all components (10-20%) and the fatty infiltration. We have experienced one case of the idiopathic aplastic anemia in a patient going through hemodialysis and we just report it with documentary records. 저자들은 혈액 투석 중인 환자에서 약물, 면역계 이상등의 원인을 발견할 수 없었음에도 재생 불량성 빈혈이 발생한 1예를 경험하여 문헌 고찰과 함께 보고하는 바이다.
Determination of Density Noise in a Two-Phase-Flow by X-ray Computer Tomography
Gil-Hong Jang(장길홍) 한국해양공학회 1989 韓國海洋工學會誌 Vol.3 No.1
본 논문은 X-선 컴퓨터 단층촬영장치에 의한 이상류(二相流)의 구조 확인을 위한 새로운 방법을 제시한다. 통계학적인 파라미터의 단면분포는 컴퓨터 상재생(相再生) 방법에 의해 밀도소음 스그널에서 얻게되며 상재생은 여러가지 상재생을 위한 산출모델중 반복법을 이용했으며 모멘트에 의한 통계학적 파라미터의 분포결과는 조사하는 유형(流型)의 특성을 알 수 있으므로 안전에 기여한다. It has been shown that the tomographic analysis of a stochastic process is possible. The distribution of the relevant statistical parameters can be displayed. The developed technique is highly suitable for the identification of flow-patterns and it can be used to describe the distribution of the noise components of two-phase-flow.<br/> For this purpose reconstruction algorithms have been implemented and afterwards used to analyse the measured density noise. This method can be further improved, by 1) Reducing the expenses of the measuring device, 2) Decreasing the measuring time and 3) Decreasing the calcuation time.<br/> The application of the described procedure to a geometry of stationary X-ray source and detectors is possible.
Kiyoung Jang,Su-Jin Jung,Hong Gil Lee,Nam-Chon Paek,Pil Joon Seo 한국육종학회 2015 한국육종학회 심포지엄 Vol.2015 No.07
Floral transition is influenced by environmental factors such as light and temperature. Plants are capable of integrating photoperiod and ambient temperature signaling into their developmental program. Despite extensive investigations on individual genetic pathways, little is known about the molecular components that integrate both pathways. Here, we demonstrate that the RING finger–containing E3 ubiquitin ligase CONSTITUTIVE PHOTOMORPHOGENIC1 (COP1) acts as an integrator of photoperiod and ambient temperature signaling. In addition to the role in photoperiodic destabilization of CONSTANS (CO), COP1 also regulates temperature sensitivity by controlling the degradation of GIGANTEA (GI). COP1-impaired mutants showed reduced sensitivity to low ambient temperature. Notably, COP1 is more stabilized at low temperature and accelerates GI turnover in a 26S proteasome-dependent manner. The direct association of GI with the promoter of FLOWERING LOCUS T (FT) depends on ambient temperature, and thus COP1-triggered GI turnover delays flowering at low temperatures via a CO-independent pathway. Taken together, our findings indicate that environmental conditions regulate the stability of COP1, and conditional specificity of its target selection stimulates proper developmental responses and ensures reproductive success.
張吉洪(Gil-Hong Jang) 한국해양공학회 1989 韓國海洋工學會誌 Vol.3 No.2
The tidal energy is a renewable energy source, which is currently being utilized and bas been in use for a long time. The state of the art in the tapping of the tidal energy source is presently satisfactory.<br/> This paper discusses a tidal power station. The following areas are covered : 1) principles or different modes of operation of tidal power stations, 2) mathematical base of power calculation, and 3) problems of tidal power.