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식도운동질환에 있어서 동위원소 식도통과검사와 식도내압검사의 비교연구
오정진(J . J . Oh),송치욱(C . W . Song),현진해(J . H . Hyun) 대한내과학회 1994 대한내과학회지 Vol.47 No.5
Objectives : Esophageal manometry and radionuclide esophageal transit study (RETS) are important tests for the esophageal motor function. So far, there are little available report concerning the correlation between two methods. In the present study, we have compared the results of esophageal manometry and RETS. Methods : Total 66 human subjects were employed in this study including 20 normals, 24 nonspecific esophageal motility disorders, 9 achalasia, 6 diffuse esophageal spasm, 3 hypertensive LES, 2 nutcracker and 2 scleroderma. In each subject, esophageal manomertic study was performed with low compliance pneumohydraulic capillary infusion system. Within 2 days of manometric study, each subject was studied for radionuclide esophageal transit using liquid containine 0.5 μci of Tc-99m tin colloid in supine position. Manometric parameters includes amplitude (A), duration (D) of the distal esophageal contraction, velocity (V) and prevalence of peristalsis (P), The number of abnormal contractions (ACT) and lower esophageal sphincter pressure (LESP) were also included in the parameters. Esophageal pressure (LESP) were also included in the parameters. Esophageal transit time (ETT) was defined as the time taken to reach 10% of the peak activity from the entry of the radionuclide. Results : In normal subjects, the mean ETT was 8.5±6.5 seconds (M±SD) and the mean manometry parameters including A, D, P, V, ACT and LESP were 86.3±37.2 mmHg, 98.2%, 3.4±0.9 cm/sec, 0.1±0.2 and 29.5±4.5 mmHg, respectively. In patients with various esophageal motility disorders ETT was delayed in variable degree from less than 15 seconds to more than 300 seconds. In order to find possible correlation between the ETT delay and manometry parameters, each parameter was compared in relation to ETT by regression analysis. We found an intimate relationship between ETT versus amplitude (r=-0.56, p<0.001), prevalence of perisalsis (r = -0.63, p<0.0001), velocity (r =-0.46, p<0.0015), and number of abnormal contractions (r=0.47, p<0.0011). However, neither duration of esophageal contraction nor LESP related to the ETT delay. Conclusions : Among the esophageal manometry parameters, A, V, P, ACT are related with esophageal transit. However, changes in LESP and duration of contraction are less important to estimate the esophageal transit.
실리콘 기판 위에 UHV - ICB 증착법으로 적층 성장된 Y₂O₃박막의 BS / channeling 연구
김효배(H. B. Kim),조만호(M. H. Cho),황보상우(S. W. Whangbo),최성창(S. C. Choi),최원국(W. K. Choi),오정아(J. A. Oh),송종한(J. H. Song),황정남(C. N. Whang) 한국진공학회(ASCT) 1997 Applied Science and Convergence Technology Vol.6 No.3
실리콘 기판위에 초고진공 Ionized Cluster Beam(UHV-ICB)증착법으로 적층 성장시킨 Y₂O₃ 박막의 결정성 및 구조를 Backscattering Spectroscopy(BS)/channeling을 이용하여 분석하였다. 현재까지 타증착법에 의해 성장된 Y₂O₃ 박막의 channeling 최소수율은 0.8~0.95로 거의 비정질이거나 다결정이었다. 이에 반해 UHV-ICB법으로 Si(100), Si(111) 기판 위에 적층 성장시킨 Y₂O₃ 박막의 channeling 최소수율은 각각 0.28, 0.25로 UHV-ICB법으로 성장시킨 Y₂O₃ 박막이 타증착법으로 성장시킨 박막보다 상대적으로 우수한 결정성을 지니고 있었다. 또한 실리콘 기판의 방향에 관계없이 Y₂O₃ 박막의 표면 영역이 계면 영역보다 결정성이 좋았다. Si(111) 위에 적층 성장한 Y₂O₃ 박막은 실리콘 결정과 0.1˚ 어긋나서(111)면으로 성장하였고, Si(100) 위에 적층 성장한 Y₂O₃ 박막은 실리콘 결정과 평행하게 double domain 구조를 지닌 (110)면으로 성장하였다. 산소공명 BS/channeling 결과 Si(111) 위에 적층 성장한 Y₂O₃ 박막의 산소는 결정성을 갖고 있으나 Si(100) 위에 적층 성장한 Y₂O₃ 박막의 산소는 random하게 분포하고 있음을 확인하였다. The crystallinity and the structure of heteroepitaxially grown Y₂O₃ films on the silicon substrates deposited by Ultra High Vacuum Ionized Cluster Beam(UHV-ICB) were investigated by Back-scattering Spectroscopy(BS) /channeling. The channeling minimum values, X_(min), of the Y₂O₃ films deposited by other methods were 0.8~0.95 up to the present, which indicates amorphous or highly polycrystalline nature of the Y₂O₃ films. On the contrary, the channeling minimum value of heteroepitaxially grown Y₂O₃ films on Si(100) and Si(111) deposited by UHV-ICB are 0.28 and 0,25 respectively, These results point out fairly good crystalline quality. It is also observed that the top region of Y₂O₃ films have less crystalline defects than the bottom region regardless of the crystal direction of the Si substrates. The axis of Y₂O₃<111> epitaxially grown on Si(l11) is tilt by 0.1˚ with respect to Si <111>. That of Y₂O₃<1l0> on Si(l00) is parallel to the Si<001>. The Y₂O₃ film on Si(100) grew with single domain structure and that on Si(1l1) grew with double domain structure. From the result of oxygen resonance BS/channeling, the oxygen atoms in heteroepitaxially grown Y₂O₃ film on Si(111) substrate have the crystallinity, but that on Si(100) shows almost channeling amorphous state.
우리나라 在來種 蒐集 大豆의 蛋白質 및 脂肪含量에 關한 硏究 Ⅱ
S. H. Kwon(權臣漢),J. H. Oh(吳正行),J. R. Kim(金在利),H. S. Song(宋禧燮),B. W. Kim(金炳友) 한국육종학회 1975 한국육종학회지 Vol.7 No.1
A collection of 840 native soybean lines currently grown by farmers was made from the southern part of Korean peninsula. The variability of chemical contents in seeds and relationships between chemical contents and important agronomic traits were studied. 1. The variability for both protein and oil contents are 33.2%-49.8% and 11.2%-23.4%, respectively. The population consisted with over 60 percent of lines containing more than 41% of protein, while approximately 85% of lines belong to low oil category ranged from 15 to 19 percent of oil. 2. It was discouraged in finding marker genes for high protein and high oil content in this investigation. Therefore, appropriate methods of analysis for protein and oil are urgently needed to develop for screening large number of strains in early stages. 3. Sixty six high protein lines (over 45 percent and eight high oil content lines (over 21 percent) were found from the collection. After advanced test, the selected lines will be decided to utilize breeding materials for high protein and high oil.
S. H. Kwon(權臣漢),J. H. Oh(吳正行),Y. S. Ham(咸泳秀),J. H. Kim(金鍾昊) 한국육종학회 1975 한국육종학회지 Vol.7 No.3
To determine the number of genes controlling resistance of the variety Tong-il which is resistant to blast disease at present, F₂ populations of each cross between Tong-il and five susceptible varieties were genetically analyzed with two prevalent blast strain T-1 and E-7 of blast fungus. Results indicated that blast resistance of the variety Tong-il was conditioned by a single dominant-gene, and the resistance to the strain T-1 was controlled by one gene different from that controlling to the strain E-7 of blast fungus.
S. H. Kwon(權臣漢),J. H. Oh(吳正行),K. R. Kim(金侊來),S. W. Lee(李承雨) 한국육종학회 1975 한국육종학회지 Vol.7 No.2
By means of textural measurement of cooked rice, 26 lines were selected from the progenies of irradiated Tong-il on the basis of their physical properties. Variety Tong-il showed significant differences from the local variety Pung-kwang in various physical properties, such as hardness, cohesiveness, elasticity, gumminess and chewiness. These results suggest that scores of physical properties were a possible index for evaluation of palatability of cooked rice.
S.H. KWON(權臣漢),J.H. OH(吳正行),H.S. SONG(宋禧燮) 한국육종학회 1977 한국육종학회지 Vol.9 No.3
The experiment was carried out to determine the germination ability of soybean pollen with different storage conditions. Sucrose-agar media was succeseful for germination of soybean pollen and the germination was hardly affected by the ingredient amounts of agar and sucrose in artificial media. Maximum germination of fresh pollen look place in 80 min. after inoculation of the pollen on 2% agar plate containing 20% sucrose and on difference in germination percent was found between two varieties examined. When soybean pollen was kept at room conditions for 3 hours, the germination averaged less than 10%. However, it was found to be kept higher germination ability of the pollen by storage in brown desiccator being controlled humidity and light. Morever germination could be remarkably improved with storing at the condition of lower temperature and humidity, and the influence of humidity was more conspicuous with long storage hours.