http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
관상동맥질환에서 심장풀스캔을 이용한 최고수축기혈압 - 수축기말용적곡선의 분석
박영배,이영우,범희승,이명철,고창순,김병태,정준기,궁성수 대한핵의학회 1987 핵의학 분자영상 Vol.21 No.2
For measurement of ventricular performance, ejection fraction (EF) has gained wide acceptance. But EF is influenced not only by changes in muscle function but also by changes in cardiac loading conditions. In case of valvular geart disease which is variable in loading conditions, EF cannot be reliable as an index of myocardial contractility. The end systolic pressure (ESP)-end systolic volume (ESV) relation, howver, is known to represent myocardial contractility, independent of changes in loading conditions. Similar results can be obtained by using peak-systolic presure (PSP) instead of ESP. To evaluate the utility of the peak systolic pressure-end systolic volume index (PSP-ESVI) relation as an index of myocardial function, we measured PSP & ESVI in 19 partents with coronary artery disease before (PSP& ESVI) and after (PSP & ESVI) sublingeal administration of nitroglycerin, PSP was measured with standard mercury sphygmomanometer during gated blood pool scintigraphic study. ESVI was measured by count derived method after attenuation correction. PSP & ESVI measurement was started when the fall of PSP was greater than 5 mmHg after 7-14 minutes post-administration of nitroglycerin. Mean values (±S.D.) of PSP & ESVI was 124.9(±20.7) mmHg 59.4(±39.9) ml/M². Mean values (±S.D) of PSP & ESVI was 113.2(±19.9)mmHg & 37.5(±26.1)ml/M². There was a significant difference between mean values of PSP & PSP (p$lt;0.01), and mean values of ESVI & ESVI (p$lt;0.01)PSP-PSP/ESVI-ESVI, PSP/ESVI and EF were in the range of 0.14-5.19 mmHg/ml/M², 0.67-7.68 mmHg/ml/M² and 10.8%-74.5% respectively. PSP-PSP/ESVI-ESVI and EF showed exponetial correlation (r=0.85, P$lt;0.01). The correlation coefficient between PSP/ESVI and EF was 0.73(p$lt;0.01). With the above results, we suggest that PSP₁-PSP₂/ESVI₁-ESVI₂ and PSP₁/ESV1 can be usde as an index of myocardial function.
LARGE-SCALE CLUSTERING OF GALAXIES IN THE CFA SURVEY
Park, Chang-Bom The Korean Astronomical Society 1992 天文學論叢 Vol.7 No.1
The power spectrum of the galaxy distribution is accurately measured up to wavelengths over $100\;h^{-1}$ Mpc from the CfA 1 and 2 catalogs. We find that our results agree with power spectra calculated by others from smaller samples of optical, radio and infrared galaxies. The power spectrum of an open CDM model (${\Omega}h$ = 0.2 and ${\delta}_8$ = 1; see below for definitions) best approximates the observed power spectrum. The power spectrum of the standard COM model (${\Omega}h$ = 0.5 and ${\delta}_8$ = 1) is inconsistent with the observed one at the 99% confidence level. Our best estimation of the corresponding correlation function in real space is ${\xi}(r)\;=\;(r/6.2h^{-1}Mpc)^{-1.8}$ for r < $20h^{-1}$ Mpc.
모래 공급과 인공 홍수가 양양댐 하류하천의 부착조류에 미치는 영향
박미숙 ( Mi Sook Park ),이재용 ( Jae Yong Lee ),정성민 ( Sung Min Jung ),박창근 ( Chang Keun Park ),장군 ( Kun Chang ),김범철 ( Bom Chul Kim ) 한국물환경학회 ( 구 한국수질보전학회 ) 2012 한국물환경학회지 Vol.28 No.3
Dam construction in a river can change its hydrological pattern and trap sediments, which results in ecological changes in the downstream. It is a common phenomenon in the downstream of dams to have decreased sediment flow and increased periphyton. Artificial floods and sediment application are suggested as mitigation practices in order to simulate natural process of flood; transporting sediment and sloughing periphyton off. In this study the effects of artificial floods on periphyton were examined by applying sand artificially and discharging water from a dam (Yangyang Dam, Korea). The study area has been suffering from turbidity problems caused by shore erosion of the dam. The accumulation of inorganic sediments and increase of periphyton on the river bottom are the major factors of habitat deterioration in the downstream reaches. Artificial flood and artificial addition of sand was performed in summer and the effects were measured. Piles of applied sands were washed off easily by discharge and it enhanced the periphyton sloughing effect. The removal efficiency of periphyton was 50~80% within the 2 km reach from the dam. In conclusion artificial floods and sand application can be a good mitigation measure for the habitat rehabilitation after a dam construction in streams.
The metabolic mechanism of C-14 labeled chitosan in mice
Kim, Kwang Yoon,Kim, Young Ho,Kim, Hee Kyung,Bom, Hee Seung,Kim, Ji Yeul,Yoshikazu Nishimura,Jkim, ung Woo,Oh, Chang Suck,Park, Ro Dong,Lee, Hyun Chul,Kang, Moon Il,Roh, Young Bok 한국키틴키토산학회 1998 한국키틴키토산학회지 Vol.3 No.1
Chitin is exists in the exoskeleton of crustaceans and chitosan can be obtained by deacetylation of chitin. As chitosan has a chelating characteristics, it was used radiostrontium chelator in the rats and mice. It also can be used as a healthy food and medicine. The purpose of the prsent study is to investigate the chitosan distribution and excretory route of 14C-chitosan in the animal body. 14C-chitosan was prepared and intravenously administered to the vein of mice and also intraorally ingested. The body distribution of chitosan was studied by autoradiography and the urinary excretion was counted. C-14 label chitosan was showed high distribution in the liver. And 10~20% of chitosan was excreted to the urine through kidney within few days. Chitosan was gathered into gromerulus in kidney and excreted from three hours. It was concluded that chitosan has no target organs and liver distribution is a sort of only passing route for the urinary excretion by way of kidney.
Zero-order Delivery of Alfuzosin Hydrochloride with Hydrophilic Polymers
Park, Jun-Bom,Hwang, Chang-Hwan,Noh, Hyung-Gon,Chae, Yu-Byeong,Song, Jun-Woo,Kang, Chin-Yang The Korean Society of Pharmaceutical Sciences and 2010 Journal of Pharmaceutical Investigation Vol.40 No.5
Manufacturing a multi-layered tablet such as Xatral XL$^{(R)}$ is more complex and expensive than monolayered tablets, but mono-layered tablets may have less favorable release properties depending on the pharmacodynamics and pharmacokinetics of the active ingredient. We therefore sought to develop a monolayer tablet with a similar dissolution profile to the commercial alfuzosin sustained-release triple layered tablet (Xatral XL$^{(R)}$). We prepared four different mono-layered alfuzosin tablets with different concentrations of hydroxypropyl methycellulose and PVP K-90. Fomulation III with alfuzosion/mg-stearate/ HPMC/ PVP K-90 (10/5/110/95 mg/tab) has a similar dissolution rate to Xatral XL$^{(R)}$, with a similarity factor score of 81.4. However, the swelling and erosion rates of the two formulations were different, and NIR analysis showed differences in the mechanisms of drug release. Thus, although formulation III and Xatral XL$^{(R)}$ show similar dissolution rates, the mechanisms of drug release are different.