http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
급·만성 간질환 환자에서 혈청 25-하이드록시 비타민 D_3 농도의 변화에 대한 연구
신재규,한희정,주원찬,송민호,이헌영,노흥규 충남대학교 의과대학 지역사회의학연구소 1998 충남의대잡지 Vol.25 No.1
The liver plays a central role in the vitamin D metabolism; it determines the overall efficiency of vitamin D₃utilization through the 25-hydroxylation of vitamin D. The abnormalities of vitamin D metabolism in acute and chronic liver diseases result from multiple causes such as defects in synthesis of vitamin D binding protein and decreased metabolic activities in 25-hydroxylation of vitamin D. Presumably the severity of liver disease may be related to the low level of vitamin D₃,especially 25-hydroxylated vitamin D₃. We measured the serum 25-hydroxyvitamin D₃in the patients with acute and chronic liver diseases and analyzed their levels according to the severity of liver disease. The patients with acute hepatitis(n=9, M/F;7/2, age 32.3±16.2) and with liver cirrhosis (n=30, M/F;22/8, 55.8±10.5) were subjected to measure serum concentrations of 25-hydroxylated or 1,25-dihydroxylated forms of vitamin D3. Simultaneously we measured serum albumin, serum calcium, parathyroid hormone (PTH) to assess calcium metabolism and the severity of liver disease in those patients. 1) The level of serum 25-hydroxyvitamin D, concentrations in the patients with liver disease (acute hepatitis 12.4±6.4 ng/ml and liver cirrhosis 8.5±4.7 ng/ml, p<0.05) showed significant lower levels compared to normal controls (21.6±9.3 ng/ml) but there was no significant differences in the groups between acute hepatitis and liver cirrhosis. 2) The serum calcium concentrations were not significantly changed in the patients with acute hepatitis (9.06±0.33 mg/dl, p>0.05) but in the patients with liver cirrhosis showed significant decrease in serum calcium levels (8.22±0.57 mg/dl, p<0.05) than those of normal controls (8.76±0.5 mg/dl). 3) The level of serum 1,25-dihydroxyvitamin D₃ concentrations in the patients with liver, cirrhosis showed significant decrease (12.1±10.3 pg/ml, p<0.05) than those of normal controls (35.1±16.2 pg/ml). 4) We could observe the significant positive correlations between serum 25hydroxyvitamin D₃concentrations and serum albumin concentrations in both groups of acute hepatitis (r=0.757, p<0.05, n=9) and liver cirrhosis (r=0.431, p<0.05, n=30). We could observe low serum 25-hydroxyvitamin D, concentrations in patients with acute and chronic liver diseases. This finding suggest that the 25-hydroxylation of vitamin D showed a defect in the early course of liver disease and this is progressively deranged during the course of chronic liver disease. This finding support the causal relationship between liver disease and its metatolic derangement.
신재규(Shin Jae-Gyu),황우진(Hwang Woo-Jin),최원기(Choi Won-Ki) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(계획계)
Recently, the interest in a glazing is increasing as energy saving measures in buildings. And relevant regulations are also strengthening. This study analyzed the thermal and optical performance of a glazing according to combination of glazing characteristics; location of coating surface, filling gas type and proportion, space of cavity. The results of this study are as follow; 1)The components of gases do not effect on the optical performance of a glazing, however, U-value was improved from 18 to 23 percent. 2)According to the distance of cavity, 12㎜ cavity(spacer) was best thermal performance. 3), Triple Coated Low-e was best thermal performance for U-value of insulate glass units and location of the coating surface was not impacted.
뜬바닥 온돌구조에서 바닥공간의 덕트를 이용한 환기가 실내 열환경에 미치는 영향
신재규(Shin Jae-Gyu),김유민(Kim Yu-Min),손장열(Sohn Jang-Yeul) 한국건축친환경설비학회 2008 한국건축친환경설비학회 학술발표대회 논문집 Vol.- No.-
Natural ventilation rate has been decreased and it caused insufficient ventilation in buildings due to enhanced air tightness performance. Particularly, a variety of building materials that emit air pollutants are widely used in buildings and result in poor indoor air quality However, ventilation rate is not sufficient since the most ventilation is caused by natural ventilation or infiltration in Ondol heating system which does not have separate ventilation system. As an alternative for that issue, improved Ondol system is proposed in this study. This study which is comparison between experiment data and simulation results, verify propriety and applicability with and apartment house.
Glazing의 성능에 따른 주상복합건물의 에너지 소비 패턴에 관한 연구
신재규(Shin, Jae-Gyu),최원기(Choi, Won-Ki) SH도시연구원 2011 주택도시연구 Vol.1 No.1
Recently, the Commercial-residential buildings demand are increasing. The Commercial-residential buildings are almost curtain-wall system or large window in building skin. However, These kind of buildings have problems with building energy efficiency. Commercial-residential buildings should be considered U-value and SHGC because of the different characteristics heating and cooling loads of both residential space and commercial space. In this study the influence of SHGC and U-value on energy consumption was analyzed with simulation, depending on a region - central, south. Eneryplus was used for building energy simulation. The conclusions of this study are as follows; 1) U-value more influence on residential space energy than commercial space energy in central region. As U-value has be decreased, total energy of residential space has be reduced. However, the energy is increased after U-value 1.2W/m2℃ in south region. 2) SHGC reduced cooling energy in commercial space. U-value more influence on consumption energy the south region than the central region. 3) As SHGC has be decreased, total energy of residential space has be reduced in south region. However, the energy is increased after SHGC 0.48 in central region. Therefore, SHGC should be considered in a commercial-residential buildings carefully.
CO₂ 배출량에 따른 노후 공동주택의 재건축 판단 방안 연구
신재규(Shin Jae-Gyu),김유민(Kim Yu-Min),손장열(Sohn Jang-Yeul) 대한건축학회 2009 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.29 No.1(계획계)
CO₂ emission due to the consumption of fossil fuel cause environmental load and 30% of CO₂ is emitted from buildings. As buildings are getting older, CO₂ emission rate and energy consumption are increased since the thermal performance and the efficiency of equipment are deteriorated. In this study, the reconstruction cycle of deteriorated apartments is determined according to carbon dioxide emissions by the LCA to reduce the environmental load. To evaluate CO₂ emission from apartments, whole life cycle is divided into three parts; 1) Input-Output analysis is used for construction stage, 2) simulation is conducted for maintenance stage, 3) consumed energy for equipment is estimated for demolition stage.