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김종일,정충식 조선대학교 동력자원연구소 1987 動力資源硏究所誌 Vol.9 No.2
Variations of transient temperature were measured on the growth and the interference of bubbles which generally occur on the heat surface. The present experiments of transient temperature variations and temperature fluctuations were conducted by bead type thermistor in pool boiling without a heat surface. The experimentally obtained conclusions were as follows. 1) The high transient temperature variation of 11. 46℃ for a duration of 0.08 sec and a temperature frequency for 5.6×10^-2 sec as a flashing were measured. 2) The highest variation of transient temperature was shown at saturated temperature of 80℃ and superheat of 7.9℃. 3) Below the saturated temperature, 60℃, the temperature frequency was found to increase with increasing the superheat, but above the 60℃, it was increase with the lower superheat and relatively, decreased with the higher superheat.
全尙武,丁炳相,鄭鎭宇,李明馥 최신의학사 1972 最新醫學 Vol.15 No.4
The systematic studies on the esophageal branchs originated from the left gastric artery and other arterial branches of the celiac artery system were relatively few. This investigation was untertaken to find out the modus of the origins and distributions with their variants of the esophageal branches based upon 418 dissections of Korean fetuses, which were injected with 8% vinylite solution added 3% fast red B in acetone. The results were summerized as follows: 1. The number of the esophageal branches was from one to six branches and the cases which had two esopageal branches were most abundant. 2. The esophageal branches originated from the left gastric artery were appeared most abundant and the next orders were from the accessory left gastric, accessory left hepatic and the replaced left hopatic arteries. 3. The esophageal branches originated from the celiac artery, common hepatic artery, the splenic artery and the abdominal aorta were appeared few.
Yeong-Rok Kang,Guinyun Kim,Toshiro Ohsaki,Hyun Kim,Masayuki Igashira,이삼열,Tae-Ik Ro,Won-Chumg Chung 한국물리학회 2007 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.50 No.I
The neutron capture cross-sections of $^{165}$Ho were measured in the energy region from 10 to 90 keV. Pulsed keV-neutrons were produced via the $^{7}$Li(p,n)$^{7}$Be reaction by bombarding the lithium target with a 1.5-ns bunched proton beam from the 3-MV Pelletron accelerator of the Tokyo Institute of Technology. The neutron energy, having a continuous spectrum, was measured by using a time-of-flight method and a $^{6}$Li-glass scintillation detector. The gamma-rays emitted from the reaction were detected by using an anti-Compton NaI(Tl) spectrometer. A pulse-height weighting technique was applied to observe the capture gamma-ray pulse-height spectra to derive the capture yields. The neutron capture cross-sections were determined relative to the standard capture cross-sections of $^{197}$Au. The present results were compared with previous measurements and with the evaluated values of ENDF/B-VII-b2 and JEF-3.1
장경진(Jang, Kyung Jin),성윤기(Seoung, Yoon Ki),윤수현(Yoon, Su Hyun),정혜승(Chumg, Hye Seung),김수향(Kim, Soo Hyang),양유리(Yang, You Lee),추상희(Chu, Sang Hui) 한국보건간호학회 2016 韓國保健看護學會誌 Vol.30 No.3
Purpose: The purpose of this study was to investigate the awareness of Korean unification and health care in healthcare professional students. Methods: Descriptive survey design was used, and self administered questionnaires were collected from 567 participants. The data were analyzed using descriptive statistics, chi-square test, ANOVA, and scheffe test. Results: A total of 279(54.4%) students answered that Korean unification is needed. The mean score of attentiveness to Korean unification was 5.27(±2.10) out of 10, and the mean score of interest on health care for unification was 4.28(±2.26). The degree of interest in Korean unification was significantly associated with the degree of health care for unification(p<.001). The mean score of necessity regarding health care education for unification was 5.59(±2.15) out of 10, which was proportional to the degree of interest in the Korean unification(p<.001). The mean score of knowledge regarding North Korea’s medical status was 2.35(±1.17) out of 10. Conclusion: Based on the study results, continuous education about unification as well as health care for unification is required in order to increase awareness of Korean unification and healthcare in students. Furthermore, additional studies to better understand nursing care systems of North Korea and to identify the roles of nurses in the unification process and public healthcare of unified Korea are needed.
Comparison of Different Vehicles on Human Embryonic Stem Cells using Vitrification
Jae Ho Lee,Gi Jin Kim,Sinae Kim,Won Woo Lee,Hey Jin Lee,Dong Ryul Lee,Hyung Min Chumg 한국동물생명공학회(구 한국동물번식학회) 2006 Reproductive & developmental biology Vol.30 No.4
Vitrification has been suggested to be an effective method for the cryopreservation of human ES cells. However, the efficiency of vitrification with different vehicles remains a matter of ongoing controversy. The objective of this study was to assess the efficiency of cryopreservation in human ES cells by vitrification using different vehicles. A human ES cell line and a variety of vehicles, including microdroplet (MD), openpulled straw (OPS) and electron microscopic grid (EMgrid), were employed in an attempt to assess vitrification efficiency. In order to evaluate the survivability and the undifferentiated state of the postvitrified human ES cells, we conducted alkaline phosphatase staining and characterization via both RTPCR and immunofluorescence assays. The survival rates of the postvitrified human ES cells using MD, OPS and EMgrid were determined to be 61.5%, 66.6% and 53.8%, respectively. There also exist significant differences between slowfreezing and vitrification (p<0.01). However, no significant differences were detected between the vehicle types. Finally, the pluripotency of human ES cells after thawing was verified by teratoma formation. Cryopreservation using vitrification is more effective than slowfreezing, and the efficiency of vehicles proved effective with regard to the preservation of human ES cells.