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다량 토혈 후 발생한 뇌경색으로 인하여 간질증첩증을 보인 간성 뇌증 1예
오형근,정두신,이경복,양광익,박형국 순천향의학연구소 2007 Journal of Soonchunhyang Medical Science Vol.13 No.1
Status epilepticus (SE) has been described as a rare manifestation of hepatic encephalopathy. Massive bleeding and subsequent anemia may precipitate atherothrombotic cerebral infarction. Stroke is one of the possible causes of SE. A 69-year-o1d male with decompensated alcoholic liver cirrhosis presented with altered mental state and generalized convulsive SE after massive hematemesis due to varix bleeding. The hemoglobin level was 5.5 mg/dL and blood ammonia level was more than twice the normal level. The seizure was resolved after prompt and aggressive treatment for SE. The blood ammonia level was normalized after treatment for hepatic encephalopathy, but the patient' s mental state was not recovered. Brain MRI revealed multiple ischemic lesions in the both cerebral hemisphere. We present the patient as SE after acute ischemic stroke associated with anemia in hepatic encephalopathy.
吳世德,金玄旭,李光培,張良根,裵振勝,金在浩 明知大學校 産業技術硏究所 2007 産業技術硏究所論文集 Vol.26 No.-
Recently, GMAHN that provides interface between MANET and Wired Network has been focused in Mobile Communication. It is necessary that The technology provide reliable data transmission technology between mobile node and wired network in MANET environment that varing by the node movement. In this paper, using the TCP protocol(Tahoe, Reno, Vegas, SACK)that increases reliability between source and destination, we applied the TCP protocol mechanism to various environment, and compared result, and also proposed the efficient TCP mechanism by comparing each mechanism.
이차 전기영동을 이용한 프로테오믹 접근을 통한 정맥 압박이 혈장 프로테옴에 미치는 영향
양광익,박선아,오형근,정두신,박형국,성기범,안무영,홍세용 순천향대학교 2006 Journal of Soonchunhyang Medical Science Vol.12 No.1
The human proteomics-based approaches, which examine the expressed proteins of a tissue or cell type, are increasingly being used. Venous occlusion is commonly employed for stimulating tissue-plasminogen activator (t-PA) and plasminogen activator inhibitor-1 (PAI-l) release from venous endothelial cells, and this has been regarded as a parameter of the individual fibrinolytic capacity of plasma. The present work involved a detailed investigation of the plasma proteome and fibrinolytic activity in normal subjects, with the aim of determining whether correlations exist between various parameters of the fibhnolytic system before and after venous occlusion. We analyzed fibhnolytic parameters and plasma proteome before and after 15-min periods of venous occlusion in the forearm in 10 healthy 3rd-decade volunteers. Proteome analysis was performed using two-dimensional gels. The tryptic digests of some proteins were confirmed by MALDI-TOF and the MS-Fit algorithm. The fibrinolytic response as measured by the absolute amount of t-PA after venous occlusion was increased by venous occlusion (5.5 vs 9.6 ng/㎗, p<0.05), as was PAI-l (46.8 vs 56.1 ng/㎗, p<0.05). However, two-dimensional electrophoresis finding was virtually nonspecific and inconsistent after venous occlusion in healthy male subjects. Venous occlusion does not influence plasma proteome in healthy males. Although the fibhnolytic response to venous occlusion is attributed to an increase in free tUPA antigen, this change is not correlated with plasma proteome.
Global-MAHN에서 라우팅 오버헤드 개선에 대한 연구
張良根,金玄旭,李光培,吳世德,裵振勝,金在浩 明知大學校 産業技術硏究所 2007 産業技術硏究所論文集 Vol.26 No.-
In this Paper, we studied the mechanism that increases the network reliability and decreases network load in GMAHN environment based on the AODV routing protocol. This proposed algorithm is the research on the algorithm, minimizing network overhead by preventing unnecessary network overhead previously and adapting Local repair mechanism to efficient data transmission when route error happens in network, in GMAHN environment. To evaluate the proposed algorithm's performance, we analyzed the proposed algorithm and adapting in various experiment environment according to 5 experiment viewpoint such as node movement, gateway network zone, mobile node number, flow number. After evaluating the experiment, we confirmed better network improvement altogether through following result such as total average data reception rate's increase, average data transmission time's decrease, network overhead's decrease than existing GMAHN algorithm.
야콘 추출물이 Streptozotocin으로 유도된 당뇨 동물모델에서 혈당강하에 미치는 효과
오홍근(Hong-Geun Oh),강영례(Young-Rye Kang),김정훈(Jung-Hoon Kim),문대인(Dea-In Moon),서민영(Min-Young Seo),박상훈(Sang-Hoon Park),최광호(Kwang-Ho Choi),김창용(Chang-Ryong Kim),김상현(Sang-Hyun Kim),오지현(Ji-Hyun Oh),김선영(Sun-Youn 한국식품영양과학회 2012 한국식품영양과학회지 Vol.41 No.6
This study was performed to investigate improvements in diabetes mellitus by extracts of yacon in streptozotocin (STZ)-induced diabetic rats. Fifty rats were divided into a normal group and four experimental groups. STZ (45 ㎎/㎏) was injected intraperitoneally to induce type I diabetes in the four experimental groups. Yacon extracts were administered for 5 weeks. Forty-five ICR mice were also divided into one positive control group and four experimental groups for the oral glucose tolerance test (OGTT) after fed yacon extract. The control group did not eat any yacon extracts, while Group 1 (GI) was fed 125 ㎎/㎏ of yacon extracts, Group 2 (GII) was fed 250 ㎎/㎏ of yacon extracts, and Group 3 (GIII) was fed 500 ㎎/㎏ of yacon extracts. After treatment for 5 weeks, blood glucose in GIII group showed decreased tendency at the 5 week. In OGTT by glucose, the glucose level of yacon treatment group in diabetic rats was significantly decreased compared to the glucose level of the control group, but there was no difference in OGTT by maltose. In ICR mice, the glucose level of the experimental group in OGTT by maltose was significantly decreased compared to the control group. The area of the islets of Langerhans was increased by yacon treatment in a dose-dependent manner on diabetic rats. Insulin concentration of the GIII group was also decreased compared to the control group, while the concentration of fructosamine, total cholesterol, and triglycerides in serum showed no difference. OGTT by glucose or maltose in ICR mice or diabetic rats, area of the Islets of Langerhans, and insulin concentration improved. Yacon treatment may be a useful therapeutic and preventive strategy for diabetes mellitus.
Graph and Controller Design for Disturbance Attenuation in Consensus Networks
Kwang-Kyo Oh,Kevin L. Moore,Hyo-Sung Ahn,Sung-Geun Song 제어로봇시스템학회 2013 제어로봇시스템학회 국제학술대회 논문집 Vol.2013 No.10
Disturbance attenuation in consensus networks has been recently studied in the literature. In this paper, we provide illustrative examples of graph and controller design for disturbance attenuation in undirected consensus networks of identical linear time-invariant systems subject to exogenous disturbance. We first summarize some existing results on disturbance attenuation in such consensus networks, and then solve specific graph and controller design examples based on the results.
A Comparative Analysis of Step and Touch Voltages Depending on Two Test Voltage Waveforms
Kwang-Seok Jung,Sang-Wook Cha,박대원,Dae-Won Park,Jae-Geun Oh,길경석 한국전기전자재료학회 2011 Transactions on Electrical and Electronic Material Vol.12 No.4
This paper presents a comparative analysis on step and the touch voltages generated by either a sine and a ring wave voltage generator; this analysis was done as a basic study in order to develop a small and lightweight ground meter. A ring wave generator using pulsed power technology was fabricated; an experimental grounding system specified in Institute of Electrical and Electronics Engineers standards 80 and 81 was installed. The step and the touch voltages,which were measured using comparable a sine and a ring waves in terms of magnitude and frequency, were equal. Using pulsed power technology, the weight of the fabricated ring wave generator could be reduced to one-fifth of that of a sine wave generator. Consequently, if a ground meter adopts the ring wave instead of a sine wave, it will be possible to reduce the weight of a ground meter and improve the efficiency of measurement.