http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
CFD 해석을 이용한 Balloon형 인공심폐기 설계를 위한 구조적 해석
박영란 ( Young Ran Park ),심정연 ( Jeong Yeon Shim ),김기범 ( Gi Beum Kim ),김상진 ( Shang Jin Kim ),강형섭 ( Hyung Sub Kang ),김진상 ( Jin Shang Kim ),김민호 ( Min Ho Kim ),홍철운 ( Chul Un Hong ),김성종 ( Seong Jong Kim ) 한국화학공학회 2011 Korean Chemical Engineering Research(HWAHAK KONGHA Vol.49 No.2
In this study, we attempted a structural analysis in order to design a balloon type extracorporeal membrane oxygenator that can induce blood flow without using blood pumps for the purpose of complementing the weakness in the existing extracorporeal membrane oxygenator. To analyze the flow characteristic of the blood flow within the virtual model of extracorporeal membrane oxygenator, computational fluid dynamics(CFD) modeling method was used. The operating principle of this system is to make the surface of the extracorporeal membrane oxygenator keep contracting and dilating regularly by applying pressure load using a balloon, and the ``Time Function Value`` that changes according to the time was applied by calculating a half cycle of sine waveform and a cycle of sine. waveform Under the assumption that the uni-directional blood flow could be induced if the balloon type extracorporeal membrane oxygenator was designed as per the method described above, we conducted a structural analysis accordingly. We measured and analyzed the velocity and pressure of blood flow at both inlet and outlet of the extracorporeal membrane oxygenator through CFD simulation. As a result of the modeling, it was confirmed that there was a flow in accord with the direction of the blood by the contraction/dilation. With CFD simulation, the characteristics of blood flow can be predicted in advance, so it is judged that this will be able to provide the most optimized design in producing an extracorporeal membrane oxygenator.
박선남,문영임,박호란,최선희,Park Sun Nam,Moon Young Im,Park Ho Ran,Choi Sun Hee 한국아동간호학회 1998 Child Health Nursing Research Vol.4 No.2
The purpose of this study was to investigate the level of anxiety for the mothers of leukemic children and to provide the fundamental data for the better performance of caring to them. The subjects were 292 mothers : 100 mothers whose children had a leukemia, 80 mothers whose children had taken a tonsillectomy, 112 mothers whose children with medical disease except cancer. The data were collected through The State-Trait Anxiety Inventory of Spilberger and analyzed by t-test, ANOVA Scheffe test. The results were as follows ; 1. The state anxiety mean score of mothers with leukemic children was 54.16. 2. The state anxiety of mothers with leukemic children was higher than that of the rest (F=8.00, P=0.0004). 3. There was no significant difference in anxiety of mothers with leukemic children in relation to leukemic children's and their mother's general characteristics.
박호란,문영임,Park Ho Ran,Moon Young Im 한국아동간호학회 1996 Child Health Nursing Research Vol.2 No.2
This study examined characteristics among 131 infants who were born at three hospitals affiliated with Catholic University. Those infants were very low birth weight infants (VLBWI ). Data were gathered through review of medical records between 1990 to 1993. The results were as follows : 1. Regarding the birth weight, 72.6% were between 1000 gm to 1500 gm and 27.4% were below 1000gm. Of the VLBWI, 27.5% had gestational age of 29-30 weeks and 22. lof had gestational age of 26 weeks and below. The birth weight of them was significantly correlated with their gestational age. 2. Most of VLBWI had been hospitalized for more than 30 days and particulaly those who were between 1100-1400gm had been hospitalized more than 60 days. And the number of clinical problem was the most influencing factor on their discharge. 3. Of the VLBWI, 28.2% were given gavage feeding. 4. Jaundice appeared predominantly on the 3rd day after birth ,with 64.1% of incidence rate. Of those infants developed jaundice, 92.9% received phototherapy 5. The most common problem after birth was respiratory conditions. And oxygen therapy was administered for 93.9% of the VLBWI while they were in the hospital.