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      • 경북 최초의 신장이식 1례

        이중현,김용섭,이정호,이창우,김상욱,이문섭,오민구,하달봉,이경섭 동국대학교 의학연구소 2000 東國醫學 Vol.7 No.-

        신장이식은 환자의 삶의 질을 높이고 거의 정상적인 사회생활을 가능하게 함으로써 말기신부전 환자의 3가지 신대체 요법(혈액투석, 복막투석, 신장이식) 중에 가장 효과적이고 각광받는 치료법이라 할 수 있다. 최근 들어 의료기술과 의학의 발달로 신장이식의 성공률은 과거에 비해 비약적으로 높아지고 있으며 국내에서도 점차 신장이식수술을 받는 환자가 증가하고 있으나 서울이나 다른 대도시에 비해 의료환경이 열악한 중소도시나 지방의 병원에서는 아직도 시행하지 못하고 있는 형편이다. 이에 저자들은 경북 최초로 자체 의료진에 의해 고혈압과 말기 신부전으로 동국대 포항병원에서 혈액투석을 받고 있던 32세의 남자환자에게 부인으로부터 신장을 제공받아 신장이식을 성공적으로 시행하였기에 문헌고찰과 함께 보고하고자 한다. Kidney transplantation is the preferred treatment modality for many patients with end-stage renal disease (ESRD), because it offers improved quality of life over both hemodialysis and peritoneal dialysis. Patients who do well after transplantation generally report improvement in vitality and freedom to return to the style of life that they experienced before their progression to ESRD. Recently, the success rate of kidney transplantation is greatly being increased as the surgical technique and immunosuppressive drugs are developed. Kidney transplantation is also popular in Korea which has good result. But, until now the general hospitals which are located at small city can't try the kidney transplantation because they don't have proper facilities and experts. We firstly experienced a case of kidney transplantation in a 32 years old man with hypertension and chronic renal failure at KyoungBuk province. So we report this case with references.

      • SCIESCOPUSKCI등재
      • 정전 열 접합을 이용한 Multi-Substrate Bonding

        이덕중,주병권,최우범,한정인,조경익,이광배,장진,오명환 경북대학교 센서기술연구소 1997 센서技術學術大會論文集 Vol.8 No.1

        We performed silicon-to-glass bonding using silicon direct bonding followed by anodic bonding(SDAB). Initial bonding between glass and silicon was caused by the hydrophilic surfaces of silicon and glass ensemble using silicon direct bonding(SDB) method. We found that the bonded specimen using SDAB process had higher strength than one using anodic bonding process only. We performed multiple layer bonding by SDAB, which is glass- silicon -glass as sandwich structure. In the silicon wafer, the (1mm x 2mm x 500μm)-sized cavity was formed by the anisotropic etching of the silicon substrate in EPW(Ethylendiamin-Pyrocatechol-Water). And, the cavity was sealed with glass wafers by SDAB method.

      • 실시간 분광 엘립소메트터를 이용한 a-Si박막의 crystallization현상 연구

        오영록,최은호,이기용,방경윤,안일신,김옥경 한양대학교 이학기술연구소 2004 이학기술연구지 Vol.7 No.

        실시간 측정과 in-situ 측정을 하기 위해 실시간 분광 엘립소메트터 (real-time spectroscopic rotating compensator ellipsometer) 를 제작 방법을 연구하였다. 높은 온도 에서 얻어지는 Poly-Silicon은Glass에 변형이 생기므로 저온에서의 Poly-Silicon을 만들기 위하여 ni기판에 a-Si 박막을 성장 시킨후 그위에 투명전극을 올려 300℃ 이하의 저온에서 Ni과 투명전극에 전기장을 걸어 주었을때 a-Si이 Poly-Silicon 으로 바뀌는 crystallization 현상을 직접 제작한 ellipsometer 를 이용하여 실시간으로 관찰하였다. We make real-time spectroscopic rotating compensator ellipsometer for real time measurement and in-situ measurement. We study a method to make Poly silicon after depositing amomhous silicon thin film by dc sputter system at different temperature and pressure. Amorphous silicon films of 30㎚ thickness were deposited on the Ni substrate, and then ITO films of 20㎚ thickness were deposited on the a-Si films. The sampie were crystallized below 300℃ in the electric field applied between the Ni and ITO.

      • KCI등재

        부가중합형 실리콘 인상재의 표면 친수성이 미세부 재현성에 미치는 영향

        오영일,황수영,이덕연,김경남,김광만 大韓齒科器材學會 2003 대한치과재료학회지 Vol.30 No.3

        The purpose of this study was to investigate the relationship between surface hydrophilicity and detail reproducibility of die stone for hydrophilic polyvinyl siloxane impression materials modified with nonionic surfactants. Hydrophilic polyvinyl siloxane impression materials were prepared with a polydimethylsiloxane composition and nonionic surfactants. The surfactants used were nonylphenoxy poly(ethyleneoxy) ethanol homologs of varying ethyleneoxy chain length. These homologs are designated NP4, NP6, and NPIO according to the mole number of ethyleneoxy group of 4, 6, and 10, respectively. The contact angle, consistency, and detail reproducibility for hydrophilic polyvinyl siloxane impression materials were tested. The incorporation of nonionic surfactant into polyvinyl siloxanes enhanced their hydrophilicity and consequently led to significant reduction in contact angles. Significant differences in contact angle were found among the samples (P < 0.05). The contact angle was lowest when NP4 was incorporated even though NP4 is less hydrophilic than NP6 and P1O. This implies that the exposed surfactant concentration on the surface was highest when NP4 was used. The consistency of surfactant-modified silicone impression materials were not affected by the type of surfactants used in this study. However, NP4-modified polyvinyl siloxane impression material showed the highest quality reproduction of the thinnest line, indicating highest wettability with gypsum among the samples. In conclusion, the surface concentration of surfactant on the silicone impression material was a crucial factor in determining wettability. The suface hydrophilicity of surfactant-modified silicone impression materials was of major relevance to the detail reproduction of die stone.

      • KCI등재

        하부 늑골골절과 masked 복부손상과의 상관관계

        이강현,임경수,홍은석,황성오 대한응급의학회 1996 대한응급의학회지 Vol.7 No.2

        Some emergency physicians neglect abdominal injuries if a patient does not complaint of abdominal pain or abdominal tenderness was absent on physical examination. But intra-abdominal injuries are correlated closely with lower rib fractures and pelvic bone fractures. In cases of lower rib fractures, intra-abdominal organs are injured as a diaphragm is elevated as high as 5th intercostal space in expiration period. When intra-abdominal solid organ is ruptured, a patient complaints of abdominal pain, but there`s no abdominal pain if small hematoma occurs in solid organs. Although the most of solid organ hematoma are resolved spontaneously without complications, sometimes delayed rupture of hematoma occurs especialy in patients with the coagulopathy. So emergency physician must evaluate the abdomen closely when the possibility of intra-abdominal injury is high. To evaluate the intra-abdominal injuries, we investigated 57 patients with lower rib fractures by ultrasonography. The patients were divided in 2 groups according to presence of abdominal symptomes; patients with abdominal symptoms(n=10). Among 57 patients, intra-abdominal injuries were found in 35 patients. In group with lower rib fractures and presence of abdominal symptoms, intra-abdominal injuries were diagnosised in 32 patients(68.9%) with 48 cases(hepatic injury; 20, spleen injury; 19, renal injury 7, hemoperitoneum without solid organ injury; 2). In group with lower rib fractures and abscence of abdominal symptoms, intra-abdominal injuries were diagnosised in 3 patients(30.0%) with 3 cases(spleen injury; 1. hemoperitoneum without solid organ injury;2). In conclusion, emergency physician must do ultrasonography to evaluate intra-abdominal injuries in patients with lower rib fractures although a patient does not complaint of abdominal pain.

      • 만성 요통증 환자에 대한 록소닌 (Loxoprofen sodium)의 임상적 효과에 대한 연구

        이준규,김경태,오기영 충남대학교 의과대학 지역사회의학연구소 1995 충남의대잡지 Vol.22 No.1

        We conducted a clinical effectiveness and safety of Loxoprofen sodium, a nonsteroidal antiinflammatory drug(NSAID) for the treatment of chronic low back pain. Loxoprofen sodiun 180 mg/day(60 mg three time daily) was administered to 30 patients with chronic low back pain associated with a range of arthritic disorders, for a period up to 4 weeks, and clinical efficacy was evaluated by objective and subjective methods. 4 weeks therapy, loxoprofen showed subjective improvements of 100%, 64.7% and 63.6% in patients with mild to moderate, moderate to severe, and severe lumbar pain etc, respectively. Objective and subjective improvements were significant after only 1 week therapy in patients with mild to moderate pain and after 4 weeks, over all intensities of pain were improved. The incidence of adverse effects over this study population was extremely low, affecting only 3.3% of patients, and were mild in nature and edematous change. Loxoprofen is thus a well-tolerated NSAID in the treatment of chronic lumbar pain.

      • KCI등재후보

        Refractory Ceramic Fiber와 Rock Wool로 자극한 폐포대식 세포에서 Reactive Oxygen Species 분비와 관련된 세포내 신호변환계

        이권행,임영,양경숙,오현숙,김은경,김경아 大韓産業醫學會 1999 대한직업환경의학회지 Vol.11 No.4

        Objectives : It is known that the high fibrogenecity of particles is connected with their cytotoxicity for macrophages. Although the molecular mechanism leading to fiber-induced fiber-induced cytotoxicity is still not clear, several mechanism have been suggested. The release of reactive oxygen species(ROS) from activated alveolar macrophages(AM) by dust have been suggested as a possible mechanism of particle-induced cell damage. But the mechanism which man-made vitreous fiber(MMVF) induces the production of ROS in AM is still not clear. In this study, we evaluated the relationship between ROS production and lactate dehydrogenase(LDH) release from alveolar treated with refractory ceramic fiber(RF2) or rock wool(RWI) and signal transduction path-way of ROS production in RF2 or RW1 exposed AM. Methods : We investigated LDH release from MMVF-stimulated AM for index of cytotoxicity. To determine what kind of signal transduction pathways are involved in MMVF-stimulated ROS generation, we used some drugs which have an effect on the signal transduction pathway. Results : RF2 and RW1 induced increase of LDH release with dose-dependent manner with RF2 having greater effect than RW1. There was a dose-dependent increase in the production of ROS by RF2 or RW1. At all level of concentration, RF2 induced more ROS production than RW1. Inhibitors of PKC(bisindolylmaleimide), PLC(U73122 and neomycine) and PTK(genistein and erbstatin) suppressed RF2 or RW1-induced ROS production. Conclusion : There was significant correlation between LDH release and ROS production from AM treated with RF2 or RW1. RF2 and RW1 induced ROS generation through protein kinase C(PKC), phospholipase C(PLC) and protein tyrosin kinase(PTK) pathways.

      • KCI등재

        폐부종과 심정지가 발생한 페노바비탈 중독환자

        오동렬,이운정,박규남,김세경,김영민,이환,유은영,최경호,정시경 大韓應急醫學會 1999 대한응급의학회지 Vol.10 No.2

        Phenobarbital is a long-acting barbiturate causing generalized depression of neuronal activity in the brain. Its effect is primarily achieved through enhanced GABA-mediated synaptic inhibition. Its use as an antiepileptic agent was first described in 1912. Before the introduction of phenytoin, phenobarbital is used as sedative-hypnotics. It is used for the treatment of epilepsy and status epilepticus. All barbiturates, including phenobarbital, have a high potential for abuse. They were frequently used for suicide attempts in the past, but they have in large part been replaced by benzodiazepines. The onset of symptoms depends on the drug and the route of administration. Mild to moderate barbiturate intoxication resembles ethanol inebriation with slurred speech, ataxia, and lethargy. Severe acute barbiturate intoxication is life threatening. Early deaths are generally cardiovascular-related. Hypotension, shock, pulmonary edema, and cardiac arrest that occurs with large doses are caused by depression of central sympathetic tone and as well as by direct depression of cardiac contractility. The potentially fatal oral dose of phenobarbital is 6-10g. We describe an 23-year-old woman with pulmonary edema, and cardiac arrest ingestion of 18grams of phenobarbital. She was completely recovered by successful cardiopulmonary resuscitation and homoperfusion. We report a case with literature review.

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