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        • A Case of Endobronchial Actinomycosis with a Broncholith cured by Cryotherapy through a Flexible Bronchoscope

          유진석,조은주,구상건,권혜정,임성경,장태원,옥철호 고신대학교(의대) 고신대학교 의과대학 학술지 2013 고신대학교 의과대학 학술지 Vol.28 No.2

          We report the case of a 53-year-old man who presented with obstructive pneumonitis and broncholithiasis. We attempted to remove the broncholith with forceps through a flexible endoscope, but the potential for bleeding due to partial synechia did not allow this. We succeeded in removing it with cryotherapy. The histopathological diagnosis was thoracic actinomycosis associated with broncholithiasis. Endobronchial actinomycosis with a broncholith is very rare. We successfully treated a patient with endobronchial actinomycosis with a broncholith by administering short-term antibiotics after broncholithectomy via cryotherapy through a flexible bronchoscope.

        • KCI등재

          Mallory-Weiss Tear After Cardiopulmonary Resuscitation in a Patient Suffering From Acute Myocardial Infarction

          유진석,고우석,김준현,배광욱 고신대학교(의대) 고신대학교 의과대학 학술지 2018 고신대학교 의과대학 학술지 Vol.33 No.2

          A report of a 79 year old male patient suffering from acute myocardial infarction with Mallory-Weiss tear after successful cardiopulmonary resuscitation(CPR) by emergency medical technician in the swimming pool is presented. Successful percutaneous coronary intervention(PCI) was done after appropriate transfusion. The patient survived and discharged without major complications after admitting 11days in the hospital. Importance of CPR in AMI patient is reiterated as complication such as Mallory-Weiss tear may arise.

        • KCI등재후보

          Carotid intima-media thickness is not related with clinical outcomes in young hypertensives

          유진석,최윤석,김주연,김지희,정우백,박철수,오용석,윤호중,정욱성,이만영 대한고혈압학회 2015 Clinical Hypertension Vol.21 No.14

          Introduction: Careful observations of long- and short-term outcomes associated with carotid intima-media thickness (IMT) are relatively limited. Methods: A total of 2,972 patients (male:female = 1,960:1,012; mean age = 62 ± 12 years) who underwent carotid IMT measurements from September 2003 to March 2009 were divided into four groups. Group I (n = 271; mean age, 42± 7.8 years) included normotensive younger subjects (males, <45 years and females <55 years), group II (n = 992; mean age, 63 ± 9 years) included normotensive elderly subjects, group III (n = 177; mean age, 46 ± 7.8 years) was hypertensive younger subjects, and group IV (n = 1,532; mean age, 63 ± 10.2 years) was hypertensive elderly subjects. We analyzed the clinical and cardiovascular events in the younger hypertensive subjects based on IMT measurements. Results: The baseline characteristics of the subjects showed that carotid IMT increased in the elderly subjects and in patients with hypertension. Poor clinical outcomes, such as all-cause death and major adverse cardiac events, were related with age, not with hypertension. Among the conventional risk factors, age and the highest quartile level of right maximum carotid IMT were related with major adverse events (young: odds ratio [OR], 0.47; 95% confidence interval [CI], 0.25 to 0.9 vs. OR, 1.73; 95% CI, 1.20 to 2.49). The patients in the highest quartile of carotid IMT had worse survival outcomes than those with the lowest IMT (p = 0.03). Discussion: Subjects with hypertension had increased carotid IMT levels. Controlling hypertension and carefully evaluating carotid IMT are important to prevent cardiovascular events even in younger subjects with hypertension.

        • KCI등재

          케네스 월츠의 핵확산 낙관론과 북한 핵문제

          유진석 경남대학교 극동문제연구소 2018 한국과 국제정치 Vol.34 No.2

          The implications of North Korea's six nuclear tests and successful test launch of the Hwasong-15, which can strike the U.S. homeland are multifaced; will the stability of deterrence on the Korean peninsula be maintained?; will North Korea use or threaten to use nuclear weapons as it invades South Korea or starts local military provocations near the border between the two countries?; how credible is U.S. nuclear extended deterrence provided to South Korea now that North Korea has the capability to directly attack the U.S. homeland with nuclear-tipped ICBMs?; will the U.S. resort to military options of striking North Korea's nuclear facilities and leadership?; is there a chance that nuclear accident or unauthorized use of nuclear weapons may happen in the North Korea because of the problem with command and control of its nuclear arsenal? Meanwhile, a drastic turn of events started by the PyeongChang 2018 Olympic Winter Games culminated in the two Korea's Panmunjom Declaration and the U.S.-North Korea Singapore Summit Meeting in which the North Korea committed complete denuclearization and the U.S. promised to provide security guarantees toward the North Korea. Will North Korea give up its nuclear weapons and develop peaceful relations with both South Korea and the U.S. in the near future? The purpose of this study is to examine Kenneth N. Waltz's proliferation optimism and his optimistic position on nuclear armed North Korea, which shed light on the aforementioned questions. Through the analysis of Waltz's argument, this study aims to provide a basis for better understanding of the various issues of North Korea's nuclear weapons and find a solution to the North Korea nuclear problem. 북한 핵문제는 지금 거대한 전환점에 서 있다. 북한은 지금까지 6차례의 핵실험과 미국 본토까지 도달 가능한 대륙간탄도미사일 시험발사를 통해 한국은 물론 미국을 직접 핵무기로 타격할 수 있는 능력을 보유하고 있음을 입증하였다. 한반도에서 억제의 안정성은 유지될 것인가? 북한은 핵무기를 직접 사용하거나 사용하겠다고 위협하면서 침략 또는 국지도발을 일으킬 것인가? 북한이 핵으로 공격할 수 있는 상황에서 미국이 한국에 제공해 온 기존의 확장억제 공약의 신뢰성은 유지될 것인가? 미국은 군사적 옵션을 사용하여 북한의 핵시설 또는 지도부를 타격할 것인가? 북한의 핵사고 또는 승인받지 않은 핵무기 사용 가능성은 있는가? 한편 평창 동계 올림픽을 계기로 시작된 화해무드는 한반도의 완전한 비핵화와 평화체제 구축 등의 내용을 담은 남북 간의 판문점 선언과, 북한의 완전한 비핵화와 미국의 북한에 대한 체제 안전보장 약속을 담은 북미 간의 싱가포르 공동성명으로 이어졌다. 북한은 향후 핵무기를 포기하고 한국 그리고 미국과 평화적인 관계를 수립할 수 있을 것인가? 이 글의 목적은 위의 질문들에 대한 시사점을 제공하는 케네스 월츠의 핵확산 낙관론과 북한 핵무장에 관한 그의 주장을 고찰하는 데 있다. 이를 통해 기존의 논의에서 누락되었거나 암묵적으로만 내재되어 있는 북한 핵문제와 관련된 이론적 측면들을 부각시켜 북한 핵문제에 대한 객관적인 이해를 돕고 그 해결방안에 미치는 함의를 도출한다. 먼저 월츠가 제시한 핵확산 낙관론의 주요 주장을 세이건과의 논쟁을 중심으로 확인하고, 북한 핵문제에 어떻게 적용했는지를 살펴본다. 마지막으로 월츠의 북한 핵문제에 대한 주장들이 던지는 시사점과 한계점들을 종합적으로 고찰한다.

        • KCI등재SCOPUS

          Convergence and Divergence of U.S. and South Korean Strategies toward North Korea's Nuclear Program

          유진석 한국학술연구원 2008 Korea Observer Vol.39 No.2

          Over the last decade and a half, both U.S.-North Korea and inter-Korean relations exhibited a pendulum swing between periods of confrontation and accommodation. Between the U.S. and South Korea, there emerged both divergence and convergence in the strategies toward North Korea. This paper seeks to explain the convergence and divergence of South Korean and U.S. strategies toward North Korea's nuclear program on the basis of a theoretical framework that is derived from Robert Jervis's (1976) discussion of the spiral model and deterrence theory, and Glenn Snyder's (1984, 1997) alliance security dilemma between abandonment and entrapment. The major argument of this paper is that the convergence and divergence of U.S. and South Korean strategies toward North Korea can be explained by each alliance member's belief about North Korea's intentions, the nature of its demand, and the relative costs of concessions and military conflict. Each alliance member's strategy toward North Korea is also constrained by the presence of an alliance security dilemma in the form of two dangers — entrapment and abandonment. Over the last decade and a half, both U.S.-North Korea and inter-Korean relations exhibited a pendulum swing between periods of confrontation and accommodation. Between the U.S. and South Korea, there emerged both divergence and convergence in the strategies toward North Korea. This paper seeks to explain the convergence and divergence of South Korean and U.S. strategies toward North Korea's nuclear program on the basis of a theoretical framework that is derived from Robert Jervis's (1976) discussion of the spiral model and deterrence theory, and Glenn Snyder's (1984, 1997) alliance security dilemma between abandonment and entrapment. The major argument of this paper is that the convergence and divergence of U.S. and South Korean strategies toward North Korea can be explained by each alliance member's belief about North Korea's intentions, the nature of its demand, and the relative costs of concessions and military conflict. Each alliance member's strategy toward North Korea is also constrained by the presence of an alliance security dilemma in the form of two dangers — entrapment and abandonment.

        • KCI등재

          Rapidly Progressive Cardiac Manifestation of Behçet's Disease Involving Conduction System and Aortic Valve

          유진석,조은주,지은혜,권희선,김진석,최규영,권범준,김동빈,장성원,김재형 한국심초음파학회 2011 Journal of Cardiovascular Ultrasound Vol.19 No.4

          Cardiac conduction system impairment is a rare clinical manifestation of Behçet's disease. We report a patient who showed 1st degree atrioventricular block at first presentation, and showed aggravated finding of 3rd degree atrioventricular block on five months later. His cardiac manifestation finally developed to acute severe aortic regurgitation on six months later from his first cardiac manifestation. We observed this rapid progression during 6 months and successfully improved symptom and disease severity of the patient with treatment targeting Behçet's disease.

        • 2P-700: 염농도 변화에 따른 전기분해액의 성상 평가

          유진석,박진영,심재호 한국공업화학회 2016 한국공업화학회 연구논문 초록집 Vol.2016 No.0

          담수화 공정 이후 발생되는 농축수는 현재 대부분 해양방류로 처리되고 있어 플랜트 주변 해양환경에 악영향을 미치고 있다. 본 연구에서는 ASTM D1141에 따라 모의농축수를 제조하여 연속식 전기분해를 통해 NaOH가 포함된 전해처리수를 생산하고 그 과정에서의 염소이온 제거율 및 NaOH 농도 등을 평가하였다. 모의농축수의 염 농도를 해수 대비 1, 3, 5배로 하여 전기분해를 진행한 결과, 평형에 도달했을 때 염소이온의 제거효율은 각각 92%, 61%, 40%으로 나타났고, 2%대의 NaOH 알칼리가 생산되었다. 또한, 평형 시 반응기 내부의 온도는 각각 79.2, 59.5, 46.2°C로 나타났다. 염소이온의 제거효율은 염농도에 반비례하는 경향을 보였으며, 농축수의 염 농도가 높을수록 저항이 낮아져서 열로 인한 손실이 감소됨을 확인 할 수 있었다. 염도가 높아 전도도가 높을 경우 더 큰 전류를 인가할 수 있기 때문에, NaOH 생산에 유리할 것으로 판단된다.

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