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임하댐 탁수지역에 서식하는 잉어의 조직과 혈장단백질의 변화
이청,신명자,김경호,박진영,이종은,서을원 7개 국립대학교 환경연구 논문집 공동발행 위원회 2004 공업기술연구 Vol.4 No.-
Present study is aimed to investigate the effect of muddy water in lmha Dam on various tissues and plasma proteins of carp. Cyprinus carpio. The gills in muddy water were appeared to have clubbing and edema in secondary lamellac and primary lamellac respectively. The sizes of glomerula in kidney were lessened smaller rather then those of in Andong Dam but the thickness of integument was becoming broader. Scanning electron micrographs of gills showed that muddy debris and parasites were attached to between primary and secondary lamcllac, suggesting that muddy water are invloved the possibility to lower the respiratory rate. By using SDS-PAGE 42 Kda plasma protein was identified only in carp plasma of muddy water and plasma protein bands were shown both quantitative and qualitative changes . Ferritin activity was observed more strong and Fe-1 was appeared to specific to in carp plasma of muddy water.
산모의 체위가 산모의 혈역학 및 신생아 Apgar 치와 제대혈 가스분석치에 미치는 영향
이청,고홍 대한마취과학회 1989 Korean Journal of Anesthesiology Vol.22 No.6
Forty five patients undergoing cesarean section were classified into 4 groups. In group 1, 11 patients received epidural anesthesia and were supine throughout the procedure. In group 2, 9 patients received epidural anesthesia and took left lateral tilt by the balloon under the right hip. In group 3, 11 patients received general anesthesia and took left lateral tilt by the same method. In group 4, 14 patients received general anesthesia and were supine. Maternal brachial and femoral systolic and diastolic pressures, cardiac output and heart rate, and newborns pH, pCO₂, pO₂ and bicarbonate concentration from the umbilical venous blood were measured. One minute and 5 minute Apgar score were also measured. The rate of decrease in the brachial arterial pressure was highest in Group 1. The rate of decrease in the femoral arterial pressure was also highest in Group 1 but statistically insignificant. The number of patients whose brachial and femoral arterial pressures decreased by more than 10% compared with pre-inction values was largest in Group I but statisticallly insignificant. There were no difference in cardiac outputs and heart rates among the groups. Newborns oxygen tesion from the umbilical venous blood was high in the groups received general anesthesia. But there were no difference in pH, pCO₂, bicarbonate concentrations and 1 minute and 5 minute Apgar scores.
Chemical Vapor Deposition of Tungsten on TiN Surface
이청,이시우,이건홍,Yi, Chung,Rhee, Shi-Woo,Lee, Kun-Hong The Institute of Electronics and Information Engin 1992 전자공학회논문지-A Vol.29 No.4
Tungsten film was deposited on the TiN surface in a low pressure chemical vapor deposition reactor and chemical reaction mechanism between TiN surface and ($WF_{6}\;and\;SiH_{4}$ was studied. Interaction of ($WF_{6}\;or\;SiH_{4}$ with TiN surface and tungsten was deposited more easily. $WF_6$ reacted with TiN activated the TiN surface to form volatile TiF_4$ and tungsten nuclei were formed. ($SiH_{4}$ was dissociated on the TiN surface to form silicon nuclei. From RBS and AES analysis, we could not detect the impurities(such as Si or TiF$_x$)at the interface between tungsten and TiN. The adhesion at the W/TiN interface became poor when the deposition temperature was below 275$^{\circ}C$.