악안면 영역에서의 유리 전완피판술 적용례분석

김욱규,송원욱,황대석,김용덕,신상훈,김종렬,정인교 부산대학교 병원 암연구소 2009 부산대병원학술지 Vol.- No.25

쇄골하정맥을 통하여 중심정맥도관 삽입 실패 후 나타난 혈흉 1예

김대영,김대우,손희원,박상진,이덕희 영남대학교 의과대학 2008 Yeungnam University Journal of Medicine Vol.25 No.2

Central venous catheterization via an internal jugular vein or subclavian vein has become a common procedure in monitonng CVP and managing severely ill patients. However, there have beennumerous reports of complications associated with central venous catheterization. These include vessel injury, pneumothorax, hemothorax, nerve injury, arrhythmias, artriovenous thrombosis, pulmonary embolism, and infection at the insertion site. We report a case of hemothorax after subclavian vein catheterization failure, along with successful treatment.

청양 지역에 분포하는 트라이아스기 후기의 조계리층에서 산출된 규화목 화석

김종헌,백승덕,이원국 공주대학교 과학교육연구소 2003 과학교육연구 Vol.34 No.-

충남 청양 지역에 분포하는 트라이아스기 후기의 조계리층에서 규화목 화석이 발견되었다. 규화목 화석의 산출은 남한에 분포하는 하부중생계 지층에서 최초의 기록이다. 분류학적 연구결과, 구과류에 속하는 Xenoxylon sp.와 Dadoxylon sp.의 2속 2종이 식별되었다. 본 논문에서 구과류 화석의 특징과 비교 및 그 의미에 대해서 고찰하였다. Petrified wood fossils are discovered from the Upper Triassic Jogyeri Formation distributed in the Cheongyang area. The occurrence of petrified fossils is the first record in the Lower Mesozoic strata distributed in South Korea. As a result of anatomical study of wood fossils, two specie belonging to two genera of Xenoxylon sp. and Dadoxylon sp. which belong to conifers, are recognized. This paper deals with the characteristics, comparison and significance of conifer wood fossils.

임피던스 방법을 이용한 뇌혈류량 측정기기의 개발(Ⅰ)

김덕원,김정래,송철규,김정열,남문현 대한의용생체공학회 1989 의공학회지 Vol.10 No.1

In this study, Rheoencephalography(REG) was designed and constructed. Using the constructed instrument cerebral blood flow(CBF) of left and right brain, CBF change by posture, and reproducibility were studied. Followings are important results. Relative CBF could be measured noninvasively and continuously. Since reproducibility of the constructed REG was found to be quite high (4 %), the accuracy of the instrument itself was proved. REG can be easily applied for testing the effect of drugs for the patients with cerebral vessel diseases since it is quite sensitive to the relative changes of CBF. Various cerebral diseases can be diagnosed by analyzing the REG waveforms. The area of restricted cerebral blood vessels can be located by arranging the electrode configuration. Comparative studies with the standard techniques of measuring CBF are needed to verify the accuracy of REG. Further studies on optimal electrode configuration and various artifacts are also necessary.

뇌혈류 측정 기기의 개발

김정래,김정열,김덕원,남문현 대한의용생체공학회 1989 의공학회지 Vol.10 No.1

In this paper, principles of Rheoencephalography(REG) was described and REG was designed and developed. Using the developed instrument, REG waveforms of the left and right brain, REG waveform changes by posture, were observed. It was found that REG waveforms could be observed noninvasively. REG can be easily applied for testing the effect of various drugs related to CBF(Cerebral blood flow) since it is quite senaitive to the relative changes of CBF. Various cerebral diseases can be diagnosed by analyzing the REG waveforms. The area of restricted cerebral blood vessels can be located by arranging the appropriate electrode configuration.

新羅 眞智王代의 政局運營

김덕원 이화사학연구소 2003 梨花史學硏究 Vol.0 No.30

After ascending the Hone, King Jinji(眞智王) got to face the biggest political crisis due to the death of his supporting power Geochilboo(居柒夫) and Kim, Moo-ryuk(金武力) and the threat of Dongyungye(銅輪系) standing face to face with him. In this condition, King Jinji may ye independently tried to administer political situation. However, on the other hand he may have strongly coped with the incursion of Baekje(百濟) externally and tried to promote the alliance wit new power internally. What attract our attention in King Jinji attempting the political consolidation with a new power was Misirang(未尸郎) and Jinjasa(眞慈師). King Jinji had an intention to pick out a talent called Misirang, absorb him into a political power, which was deeply related to Buddhism(佛敎). And another power was Saryangboo(沙梁部). Deciding to independently operating political situation King Jinji may have made his way through the unfavorably developing circumstances by the political consolidation with Dohwanyeo(桃花女) Group of Saryangboo. However, this effort of king Jinji ended in a failure, and he was dethroned for the reason of 'Politics is chaotic and impure(政亂荒음)' by kookin(國人) supporting Baekjeong(白淨) of Dongryungye. Likewise, the tate of Dohwanyeo and Bihyungrang(鼻荊郞) is thought to ye to do with the operation of political situation in the reign of King Jinji and the content of 'Politics is chaotic and impure' is not the result of the personal character of King Jinji but the expression of unstable political situation by the threat of then Dongryungye Power, in other words the symbolization of King Jinji's awareness of political crisis.

전압형 인버터에 의한 直流 스폿鎔接器의 定電力制御에 關한 硏究

김재문,김학성,박성수,원충연,김덕헌 成均館大學校 科學技術硏究所 1996 論文集 Vol.47 No.1

In recent years, there is increasing interests in spot welder with industrial growth of automobile. It makes autowelding and short-time welding possible. Conventional spot welders using AC source bring about the depreciation of welding products, because constant current control makes its workpiece spattered during welding process. In this paper, the constant power control strategy using PI controller is proposed to improve the quality of the welding products. PI controller is implemented by l6bit one chip 80C196KB microcontroller. Simulation and experimental results show that DC spot welder with single phase PWM inverter is effectively controlled by the constant power control method in very short-time.

毛澤東의 黨權掌握過程에 關한 一考察

朴德元,金虎吉 釜山 外國語 大學校 1986 外大論叢 Vol.4 No.1

Mao Tse-tung grasped the contents and direction of a new tide of thought under the teaching of Li Tai-cho and was intoxicated by the teachings when he was engaged in the library of Peking University before and after 1920. He came to feel strongly about necessity of reforming China. He fixed his eyes upon peasants of the political bequest, for he had the most deepest interest in the peasants movement. Because of the failures in the collaboration between the Kuomintang and the Communists as well as in the Human harvest riot of 1927 made his utmost exertions in the development of a new revolutionary strategy getting out of the guidance route of Comintern. His strategy of revolution started from his recognition of the revolutionary potentiality of peasants. His struggles were mostly executed in farm-countries. In the process of the Long March in 1935. Mao's method of revolutionary strategy was, in the end, formally taken as the party policy. Later, as Mao's power of conducting the party was admitted in the Convention of Chun-ui 1935. the CCP would have the particular direction of revolution since the formation of the party. Mao's revolutionary method had no concerns with the Soviet-style revolution and the order of Comintern, and his strategy and tactics were based upon his originality. Finally, it turned out to be the most peerless and autonomous method in the settlement of Communist political power through a lapse of long years war between the Kuomintang and the Communist. Mao's assuming the rein of the government and his trial for development of strategy and tactics meant independence from the direction and interference of Comintern or Soviet Russia, and proved to be the example for the success of the peasants' revolution as one of the Chinese traditional and historical bequests. Mao's deep consideration of peasants and their roles resulted in the success in the revolution by the support of their potential power after training them. From the viewpoint of international relations, the Western imperialist reaction against the weak Eastern after all justified the continuity of revolutions in china. Therefore, because the anti-imperialist and anti-colonistic struggles offered the first purpose of restoring Chinese interests was legitimate, the background of the Communist revolution and of the party formation should be examined from the traditional political legacy and the functional relations with foreign powers. So, the birth and growth of the CCP came from the alien impacts, and its thought and ideology were rationalized by the alien thought. The CCP's peculiar development of revolutionary strategy was based upon the traditional elements including Chinese nationalism and Sinocentrism and at the same time, Mao's coming into power can be explained by the restoration of Chinese autonomy in new China construction.

주파수의존형 전자근관장측정기의 개발과 정확도에 관한 연구 : 전압차 자동보정형 VOLTAGE DIFFERENCE COMPENSATING TYPE

이승종,김덕원,남기창 大韓齒科保存學會 1997 Restorative Dentistry & Endodontics Vol.22 No.2

The purpose of this study was to develop an accurate frequency-dependent type apex locator. To compensate the impedence differences of different canal contents, voltage differences were pre-measured and stored for saline, HOsb1/2O_2 and NaOCI. The circuit was adjusted to recognize the different voltages of each solution, thereby the machine could automatically compensate the voltage differences. In the process of this study, the following informations were observed. 1. Most stable apical reading was obtained at 500Hz and 10kHz. 2. There were no differences in accuracy among three different frequency types, sign wave, triangular wave and rectangular wave (p>0.05). 3. Before the compensation of voltage differences, saline, H2O2 and NaOC1 showed different readings at the apex even with the frequency-type (p<0.05). 3. After compensating the voltage difference, the accuracy was enhanced from +0.42 to +0.32 in H2O2 (p<0.05), from -0.34 to -0.12 in NaOC1 (p<0.05).

Original Articles : Clinical significance of occult hepatitis B virus infection in chronic hepatitis C patients

( Jae Young Jang ),( Soung Won Jeong ),( Sung Ran Cheon1 ),( Sae Hwan Lee1 ),( Sang Gyune Kim ),( Young Koog Cheon ),( Young Seok Kim1 ),( Young Deok Cho1 ),( Hong Soo Kim ),( So Young Jin ),( Yun Soo 대한간학회 2011 Clinical and Molecular Hepatology(대한간학회지) Vol.17 No.3

Background/Aims: We investigated the frequency of occult hepatitis B virus (HBV) infection in anti-hepatitis C virus (HCV)-positive individuals and the effects of occult HBV infection on the severity of liver disease. Methods: Seventy-one hepatitis B virus surface-antigen (HBsAg)-negative patients were divided according to their HBV serological status into groups A (anti-HBc positive, anti-HBs negative; n=18), B (anti-HBc positive, anti-HBs positive; n=34), and C (anti-HBc negative, anti-HBs positive/negative; n=19), and by anti-HCV positivity (anti-HCV positive; n=32 vs. anti-HCV negative; n=39). Liver biopsy samples were taken, and HBV DNA was quantified by real-time PCR. Results: Intrahepatic HBV DNA was detected in 32.4% (23/71) of the entire cohort, and HBV DNA levels were invariably low in the different groups. Occult HBV infection was detected more frequently in the anti-HBc-positive patients. Intrahepatic HBV DNA was detected in 28.1% (9/32) of the anti-HCV-positive and 35.9% (14/39) of the anti-HCV-negative subjects. The HCV genotype did not affect the detection rate of intrahepatic HBV DNA. In anti-HCV-positive cases, occult HBV infection did not affect liver disease severity. Conclusions: Low levels of intrahepatic HBV DNA were detected frequently in both HBsAg-negative and anti-HCV-positive cases. However, the frequency of occult HBV infection was not affected by the presence of hepatitis C, and occult HBV infection did not have a significant effect on the disease severity of hepatitis C. (Korean J Hepatol 2011;17:206-212)