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김근(K Kim),이순호(SH Lee),오창학(CH Oh),정원화(WH Chung),이관복(KB Lee),박영하(YH Park),김인선(HS Kim) 대한산부인과학회 1984 Obstetrics & Gynecology Science Vol.27 No.1
Thanatophoric dwarfism is the term applied to a distintive, lethal form of bone dysplasia described by Maroteaux, Lamy and Robert in 1967. Aspecific chondrodystrophy which they named thanatophoric (death producing) dwarfism, since it result in death shortly after birth. This report presents the clinical, rakiographic, and autopy findings of a case of thanatophoric dwarfism detected postnatally by radiologic examination and discusses the diffeenciation of this disorder from other forms of congenital short limbed dwarfism.
양수과다증 및 자궁내 태아사망과 동반된 Acardius Amorphous Monster의 1예
오창학(CH Oh),김근(K Kim),이순호(SH Lee),성기천(KC Sung),박영선(YS Park) 대한산부인과학회 1984 Obstetrics & Gynecology Science Vol.27 No.2
최근 본원에서 양수과다를 동반한 acardlius amorphous 1예를 경험하여 문헌고찰과 함께 보고 하는 바입니다. A case of a acardius amorphous monster associated with hydramnios &FDIU was terminated at full six months of gestation in 28 years old, para 1-0-2-1, women. We presen this case with brief review of literature.
이순호(SH Lee),김근(K Kim),성기천(KC Sung),민부기(BG Min) 대한산부인과학회 1983 Obstetrics & Gynecology Science Vol.26 No.12
We have observed 6l cases of congenital malformation babies among 7571 newb orns delivered after 20 weeks gestation in EuI-ji General Hospital from Jan. l976 to Dec. 1981. The result was summarized as below. The data to be presented are based on the 6l cases of congenital anomalities am ong 7571l newborn delivered after 20 weeks gestation, (0.81%). The sex ratio between male and female was male 27 cases (44.3%), female 34 cases (55.7%). The mortslity rate in congenital malformation were 57% (35 cases) Among them still-births were 19 cases (3l%). The incidence of ful term deliyeries were 59%{36 cases), and others were delivered in premature & immature. The majority causes of congenital anomalies were CNS defects, 26 cases(43%). In this report, congenital anomalies were diagnosed on inspection, autopsies & X-Ray, Ultra-sonogram, & auscultation.
실리콘계열 태양광발전 모듈 수냉각에 의한 출력향상 실증실험
유상필(S. Phil. Yu),김이현(E. H. Kim),정성대(S. D. Jeong),정찬희(C. H. Jeong),김근(K. Kim),심영우(Y. W. Shim),서용석(Y. S. Seo),정남조(N. J. Jeong) 한국태양에너지학회 2010 한국태양에너지학회 학술대회논문집 Vol.2010 No.11
The module of solar photovoltaic power generator of crystalline silicon shows about a 0.5% decrease in output when the temperature increases 1℃ because of the change of electromotive force by temperature. For this reason, as the amount of the concentrated light increases, the efficiency of development tends to decline since the temperature of the module also increases. Therefore, the profits of commercial solar photovoltaic power generator plants have been declining. As of cooling systems, water cooler is excellent at the effect of heat transfer, and is a suitable method for increasing the amount of the concentrated light on the surface of the module. We have been experimenting the effect of the increases in the output about the module of solar photovoltaic power generator in crystalline silicon by using the cooling systems over the years. As a result of the experiment, we measured a cooling effect by seasons and the effect of the increases in output quantitatively. In the event of the country, we could get the effect of 10%~15% output and is considered to get the effect of 8%~12% output according to the net profit, except for operational costs.
The Study on the Jet Nozzle Specified for Solar PV Power Enhancement
S.D. Jeong(정성대),Hu Qing Ping(호청평),K.Kim(김근),Y.H. Kim(김이현),Y.W. Sim(심영우),S.Phil. Yu(유상필) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.10
Recently, solar power plants widely and quickly rise and expand. Because of the cost of solar cell, the crystalline silicon solar cell is the most widely used type. However, the conversion efficiency of solar cell is still very low. Furthermore, the conversion efficiency of solar cell will be decreased while the temperature of solar cell is going up. Especially, the conversion efficiency of solar cell will be decreased 20%-25% in summer. And the pollutant like as dust, pollen, snow etc. inevitably cover on the surface of solar panel in solar power plant which block the part of incident light absorbed by solar panel. In this article, a nozzle device called HJS(Hydraulic Jet Scanner) was developed to improve conversion efficiency of solar cell by cooling and cleaning solar panel for solar power plants. Cooling performance and cleaning performance of HJS(Hydraulic Jet Scanner) were tested. The improved efficient rate under cooling, the improved efficient rate under cleaning and the improved efficient rate under cooling and cleaning by HJS(Hydraulic Jet Scanner), these three data were measured and recorded. In order to prove that HJS(Hydraulic Jet Scanner) have better performance for improving efficiency of solar cell, another nozzle device called Rotor Sprinkler was tested as a comparison other. The results of experiments prove HJS(Hydraulic Jet Scanner) has cooling and cleaning performance And HJS(Hydraulic Jet Scanner) can improve conversion efficiency of solar cell by cooling and cleaning solar panel.