Computational Interpretation of the Relation Between Electric Field and the Applied Current for Cathodic Protection Under Different Conductivity Environments

Yong‑Sang Kim,Sang‑Jin Ko,Sangkyu Lee,Jung‑Gu Kim 대한금속·재료학회 2018 METALS AND MATERIALS International Vol.24 No.2

An interpretation of the relation between the electric field and the applied current for cathodic protection is investigated usinga boundary element method simulation. Also, a conductivity-difference environment is set for the interface influence. Thevariation of the potential distribution is increased with the increase of the applied current and the conductivity differencedue to the rejection of the current at the interface. In the case of the electric field, the tendencies of the increasing rate andthe applied currents are similar, but the interface influence is different according to the directional component and field type(decrease of Ez and increases of Ex and Ey) due to the directional difference between the electric fields. Also, the changetendencies of the electric fields versus the applied current plots are affected by the polarization curve tendency regardingthe polarization type (activation and concentration polarizations in the oxygen-reduction and hydrogen-reduction reactions). This study shows that the underwater electric signature is determined by the polarization behavior of the materials.

대뇌실질에 발생한 포도낭미충증 -증례 보고-

김상진,김진용,박상근,고원규,신형식,황용순 대한신경외과학회 1999 Journal of Korean neurosurgical society Vol.28 No.9

Genome-wide investigation of a Korean synthetic breed, Woori-Heukdon using the Illumina PorcineSNP60K BeadChip

Yong‑Min Kim,Ha‑Seung Seong,Jung‑Jae Lee,Da‑Hye Son,Jin‑Su Kim,Soo‑Jin Sa,Young‑Sin Kim,Tae‑Jeong Choi,Kyu‑Ho Cho,Joon‑Ki Hong,Jung‑Woo Choi,Eun‑Seok Cho 한국유전학회 2020 Genes & Genomics Vol.42 No.12

Background: Woori-Heukdon (KWH) is a Korean synthetic pig breed generated using Chookjin-Duroc (KCD), Chookjin-Chamdon (KCC), and their crossbreds. Currently, there is a severe lack of studies investigating the Korean breed populations including wild boars (KWB) throughout the genome. Objective: This study was performed to investigate the genetic characteristics of Korean pig populations at the genome-wide level. Methods: Using the SNP dataset derived from genotyped and downloaded datasets using the Illumina PorcineSNP60K BeadChip, we compared the genomes of 532 individuals derived from 23 pig breeds to assess the genetic diversity, inbreeding coefficient, genetic differentiation, and population structure. Results: KWB showed the lowest average expected heterozygosity (HE = 0.1904), while KWH showed the highest genetic diversity (HE = 0.02859) among Korean populations. We verified that the genetic composition of KWH, showing USD of 74.8% and KCC of 25.2% in ADMIXTURE analysis. In population structure analyses, KCC was consistently shown to be separated from other pig populations. In addition, we observed gene flow from Western pigs to a part of Chinese populations. Conclusion: This study showed that Korean native pigs, KCC have genetic differences in comparison with Chinese and Western pigs; despite some historical records and recent genetic studies, we could not find any clear evidence that KCC was significantly influenced by Chinese or Western breeds in this study. We also verified the theoretical genomic composition of KWH at the molecular level in structure analyses. To our knowledge, this is the first genomic study to investigate the genomic characteristics of KWH and KCC.

클로렐라가 카드뮴-유인 rat 혈중지질의 변화와 간장해에 미치는 영향

김용호,이용우,이소진,박화진 한국노화학회 1998 한국노화학회지 Vol.8 No.3

순환기 내과로 자문의뢰된 환자의 임상상

황진용,최지용,손상균,조용근,채성철,전재은,박의현 慶北大學校 醫科大學 1996 慶北醫大誌 Vol.37 No.4

목적 : 순환기내과 영역은 많은 과로부터 자문의뢰를 받는 영역으로 알려져 있다. 특히 최근 우리나라의 순환기질환의 유형이 변화되고 입원환자가 고령화되면서 동반된 심질환의 유병율도 증가하고있다. 이에 저자들은 타과로 입원하여 순환기내과로 자문의뢰되는 환자의 임상상과 3차병원인 경북대학교병원에서의 순환기내과자문의 유용성 등을 평가하여 향후 순환기질병에 대한 협의진료에 도움을 주고자 본 연구를 시행하였다. 방법 : 1995년 3월부터 순환기내과로 공식자문의뢰된 첫 100명을 대상으로 전향적으로 연령, 의뢰이유, 최종진단명, 수술과의 관련성 여부, 순환기내과의 최종조치, 타과의 순응도 등을 조사하였다. 결과 : 1) 자문을 의뢰한 환자는 평균 58±16(15-89, 중앙치 61)세였고 60세이상의 환자가 57%로 고령의 환자가 많았다. 2) 내과계열 25%, 외과계열 75%로 외과계열의 자문이 많았고 일반외과가 26%로 가장 많았고 내과의 다른 분과가 12%, 신경외과 12%, 정형외과 11%, 흉부외과 11%, 신경과 11% 등의 순이었다. 외과계열중 수술을 시행한 경우는 58례로 이중 응급수술이 13례였다. 술전 위험도 평가를 위한 자문이 38례에서 있었는데 순환기적인 문제로 수술을 받지 못한 경우는 2례(1례는 허혈성 심질환, 1례는 심낭질환)이었다. 이때 응급수술을 제외한 입원일과 술전 자문일파의 간격은 평균 3±7일(입원일-42일)이고 술전 자문일과 수술일과의 간격은 평균 6±4일(1-16일)이었다. 3) 타과의 의뢰이유는 심전도 이상이 36례, 높게 측정된 혈압이 20례, 순환기질환의 과거력 17례, 환자의 증상 때문인 경우가 10례였고 심전도의 이상중에는 부정맥이 18례, 이상 Q파 6례, ST절 이상이 5례, 각차단이 3례의 순이었다. 순환기과거력 중에는 허혈성 심질환이 6례, 현재 혈압은 정상이나 고혈압의 과거력이 있는 경우가 4례 순이었고 환자의 증상은 흉통 6례, 호흡곤란이 3례, 기절이 1례였다. 4) 자문후 최종진단이 가능했던 91례를 진단별(총 97 진단명)로 나누어 보면 고혈압이 28례, 부정맥이 16례, 허혈성 심질환이 14례, 판막질환이 11례, 순환기질환이 아닌경우가 19래였다. 이들중 추적진료가 필요하다고 응답한 경우가 57례였으나 순환기내과 외래에 1번이상 추적진료한 경우는 32례(56%)로 환자의 순응도는 낮았다. 결론 : 순환기내과의 자문의뢰는 고령자에게 많았고 수술과 관련된 경우가 많았으며 심전도의 이상이 의뢰이유로 가장 많았으며 진단별로는 고혈압과 부정맥이 가장 많았다. 그리고 순환기적인문제로 수술을 받지 못한 경우는 드물었고 자문후 지속적인 추적진료를 위해 환자의 교육이 필요하겠다. Objective : Clinical characteristics of the patients with cardiovascular diseases in the general hospital have been changed and prevalance of co-existing cardiovascular disease in the patients who were admitted for non-cardiac diseases has been increased remarkably as the proportion of elderly patients increased rapidly in Korea. We evaluated clinical features of the patients consulted for cardiological evaluation and effectiveness of the consultation in the setting of tertiary general hospital, Kyungpook University Hospital. Method : One hundred patients were studied between January 1995 and January 1996. They were evaluated for the reason of consultation, final diagnosis, final recommendation from cardiologists and its impact on the management of the patients, and compliance of the consulting departments. Results : 1) The ages ranged between 15 and 89 (mean 58±16, median 61) years, 57 patients were male and 43 female. Fifty seven patients were older than 60 years. 2) Consultations from surgical parts were 75 patients. Consultation from general surgery was most frequent (26%), followed by other divisions of internal medicine (12%), neurosurgery (12%) and orthopedic surgery (11%), chest surgery (11%), neurology (11%), obstetrics and gynecology (8%), urology (4%), ophthalmology (2%), dermatology (2%), ENT (1%). Among 75 patients from surgical parts, operation was done on 58 patients, including 13 emergency cases. Preoperative cardiac risk evaluation was the reason of consultation in thirty eight patients, of which operation could not be done in only 2 patients (one had severe ischemic heart disease, the other large pericardial disease). Interval between consultation day and operation day was 6±4 days (1-6 days). 3) Reasons for cardiac consultation were electrocardiographic (ECG) abnormalities in 36 patients, high blood pressure in 20 patients, previous cardiovascular diseases in 17 patients, symptoms of the patients in 10 patients. Among EGG abnormalities, arrhythmias was the reason in 18 patients, abnormal Q waves in 6 patients, ST-T segment abnormalities in 5 patients, bundle branch block in 3 patients. Among previous cardiovascular disease, presence of ischemic heart disease was the reason in 6 patients, previous hypertension in 4 patients. Chest pain was the reason of the consultation in 6 patients, dyspnea in 3 patients, syncope in 1 patient. 4) Definite diagnoses could be made in 91 patients with 96 diagnoses which were hypertension and its complications in 28, arrhythmia with underlying disease in 16, ischemic heart disease in 14. valvular heart disease in 11, non-cardiovascular disease in 19. Cardiological follow up was recommended in 57 patients. However, 25 patients (44%) were lost to follow-up. Conclusion : Cardiological consultation was frequent in the elderly patients. Most frequent reason for consultation was EGG abnormalities. Hypertension or arrhythmia was most common final diagnosis. Inoperability due to cardiovascular problems were rare.

해조류를 이용한 항생재 대체 사료 첨가제 개발

박진용,김진욱,이희현,이송애,김진욱,이재화 신라대학교 자연과학연구소 2005 自然科學論文集 Vol.14 No.-

우리나라의 항생제 남용 문제는 세계적으로 심각 하다고 한다. 이러한 문제를 해결하기 위해서 정부는 다양한 정책을 도입하고 있으며 특히 축산물의 항생제 남용 문제를 해결하기위해 사료 관리법을 강화하여 항생제 사용을 억제하고 있어 항생제를 대체 할 물질이 필요하다. 이런 문제를 해결하기 위해서 우리나라의 다양한 해조류를 이용한 항생제 개발을 통해서 항생제 남용 문제를 해결하고 소비자들에게 믿을 수 있는 축산물을 제공 할 것으로 보인다. Feed official law was strengthened recently. The antibiotic use is suppressed with feed official law reinforcement. The antibiotic transfer material is necessary. To use the seaweeds and transfer the antibiotic. It is a possibility of a high income. This is new bio industry. This the goods production which is competitive power is possible. It is a possibility of eating the livestock where also the consumers are good.

플라톤 사상이 근대 천문학 탄생 과정에 끼친 영향

임진용 ( Jin Yong Im ) 한국서양고대역사문화학회 2010 서양고대사연구 Vol.27 No.-

The effects of the Platonic ideas in the Procedures of the Modern Astronomy Birth Im, Jin-Yong So far the study of the effects of the Platonic ideas in the procedures of the modern astronomy birth has been superficial. The purpose of this study is to understand the effects of the Platonic ideas on the modern astronomy. But it is not concerned here with mathematical parts. Only what I wish to show in this study is the context of the thinking about the universe from the ancient Greek Ages to the terminal Renaissance. The Platonic ideas on the universe are more geometrical and harmonic than any other ideas. The characteristics of the Platonic ideas assimilated with Christianity in the Middle Ages. But those ideas took a position against the Aristotle`s ideas which had filled the role of the standard of the studies in the Middle Ages. The rebirth of the Platonic ideas in the Middle Ages was not original, that is to say Neo-Platonism. Because it dealed with more various parts, The Neo-Platonism was different from the original Platonic ideas. The Neo-Platonism expelled the Aristotle`s theories from the astronomical region. Therefore The Neo-Platonism commuted the non-geometrical standpoint into the geometrical standpoint in the interpretation of the universe. The Neo-Platonism inspired the ideas for the interpretation of the universe in Copernicus and Kepler. Specially the geometrical methods was very important and necessary for constructing the model of the solar system and the universe. The Neo-Platonic books provided the ideas(a geometry, musical chords, a notion of anima mundi, a notion of the infinite universe, etc) for creating the heliocentric system with the Renaissance astronomers. Thus the Platonism played a key functional role in the birth of the modern astronomy.

SELDI-TOF MS를 이용한 유방암 환자 진단을 위한 새로운 혈청 표지자의 개발

정용식,김호승,윤태일,전미선,윤용달,이용성,이기환,김혜진,김명욱,박희붕 한국유방암학회 2004 한국유방암학회지 Vol.7 No.1

학습동기와 자아개념 및 학교적응간의 관계 분석

김용래,허남진 弘益大學校 敎育硏究所 2003 敎育硏究論叢 Vol.- No.20

The purpose of this examination was to find out the relationship among secondary school learner's learning motivation, self-concept, and school-related adjustment. And in order to achieve the purpose of this examination sampled middle/high school learners in Seoul and other areas. The instruments used for the data collection were 'School learning motivation Scale」 (Kim. Yong-Rae, 2000), 'Self-concept Scale」 (Kim, Yong-Rae, 1995) and 'School -related adjustment Scale, (Kim. Yong-Rae, 2000). The collected data analysis were performed using SPSS/WIN(11.0) program, and analysis Mean score(M), Standard Deviation(SD), Zero Order Correlation(r) and Multi-Regression Analysis. All statistic values were tested by t-test and F-test in the significant level of p<.05. The major findings of this examination were as follows: First, there were mostly significant differences in school-related adjustment depending on the learning motivation, self-concept and the upper, middle and low levels of its sub-factors(p<.00l). Second, there was a significant positive correlation by .687 between learning motivation and school-related adjustment and there also was a significant positive correlation by .641 between self-concept and school-related adjustment. Third, learning motivation and self-concept were significantly positive influences on Korea secondary school learner's school-related adjustment respectively.

담석증과 당뇨병

강진경(Jin Kyung Kang),최흥재(Heung Jai Choi),김경희(Kyung Hee Kim),황용(Yong Hwang),김용범(Yong Bum Kim),이원영(Won Yung Lee) 대한소화기학회 1985 대한소화기학회지 Vol.17 No.2

N/A Most authorities agree the higher incidence of gallstones among diabetic patient. Although many reports on gallstones or diabetes mellitus have been published, and actual correlation between gallstones and diabetes mellitus remains obscure. The purpose of this reports is to know the incidence of gallstone in diabetics and of diabetics in the patients with gallstone. Authors studied prospectively and clinically the diabetics in a group of 173 patients with gallstones and gallstone in a group of 98 diabetic patients who were admitted to Yonsei University Yong-Dong Hospital for the same period of April 1983 to May 1984. The results obtained are summarized as follow: The incidence of gallstone to general admission patients is 1.5% and the prevalence of diabetes mellitus to total in-patients is 0.8% The gallstone was found in 11.0% of diabetics and were diabetic 19.4% of patients with gallstones. The age of peak incidence of gallstones is 5th decade and female was more prevalent than male with the ratio of 1.37:1. The age of peak incidence of diabetes mellitus is 6 th decade and female is less prevalent with the ratio of 0.72:l.3, The most common characteristic finding of patients of gallstones with diabetes mellitus is symptomless(42.1%)4, There is no significant difference in serum levels of cholesterol and triglyceride between diabetic and non-diabetic groups or with and without gallstones. 5. Comparative study on location of stones revealed, 72.8% in gallbladder only, 12.7% in common bile duct only, 4. 6% in intrahepatic duct only, and remainders in multiple site. There is no significant difference in terms of location of stone between diabetic and nondiabetic group.