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Escherichia coli 패혈증 환자에 합병된 대칭적 하지 말단 괴사증 1예
남해성,유진홍,권순석,민준기,조현선,박민경,심병주,남유정,이지인,김진수,길욱현,조근종,신완식 대한감염학회 2005 감염과 화학요법 Vol.37 No.6
We have encountered a rare case of symmetrical peripheral gangrene complicating Escherichia coli sepsis in a 47-years-old male. He was successfully treated with antibiotics, anticoagulants, and vasodilator. To our knowledge, this is the first report on symmetrical peripheral gangrene complicating E. coli sepsis in Korea.
사람골수 세포에서 B 혈액형 항원의 출현에 대한 면역 전자현미경적 연구
유남진,김주성 大韓法醫學會 1985 대한법의학회지 Vol.9 No.1-2
Membrane antigens are extensively studied on different mammalian cell lines. Antigens of the erythrocyte series are often chemically well defined heterosaccharide determinants. since Yunis and Yunis (1963) gave strong evidence of the presence of A,B and H alloantigens on human normoblasts by indirect agglutination methods, several workers have detected A antigens by immunoelectron microscopy using peroxidase labelled antibodies (Reyes et al.,1974), staphylococcal protein A technique (Karhi et al., 1981) and fluorescence activated cell sorter (Sieff et al., 1981, 1982). Here we report immunoelectron microscopy observation of blood group B antigen on human normoblasts using peroxidase-labelled antibodies which allow detection of surface antigens on separated cells. The bone marrow specimens were selected from the ones which had been depleted of erythrocytes by a Ficoll-Hypaque technique and stored in liquid nitrogen(-196℃) as described (Seung & Kim, 1985). The selected specimens were from eight blood type B individuals with no disturbances in erythropoiesis. These experiments were carried out with cytocentrifuge smears and cell suspensions for light microscopic and electron microscopic observations respectively. The cell suspensions were fixed prior to incubation with reagents. Fixation was achieved by resuspending the cell pellet in phospate-buffered saline solution of 1.25% glutaraldehyde for 30min: followed by washes with a large quantity of the same buffer. They were resuspended in methanol containing 0.3% H₂O₂ for 30min. to block endogenous peroxidase and washed. And they were labelled by an indirect method using human Anti-B(IgM) and rabbit antihuman IgM antibodies labelled with horseradish peroxidase. The cytochemical detection of horseradish peroxidase was carried out by resuspending the cells for 30 min. in the dark in the usual medium containing diamino-benzidine and H₂O₂. Subsequently specimens were washed, postfixed with 1% OsO₄ for 30 min. and processed for dehydration in alcohol and acetone. For transmission electron microscopy they were embedded in Epon, sectioned and stained and stained with uranyl acetate and lead citrate. The results were as follows: 1. Under a light microscope the smears showed that brown positive cells were mixed with negative cells, but the precise identification of the cell types was difficult. 2. Under anelectron microscope a continuous or incontinuous labelling of blood group B antigens was seen in contact with the membrane of all normoblasts. 3. The myeloid precursor cells are not labelled, but occasionally limited labelling of the membrane of granulocytic and monocytic cells could be seen.
유남재,정길수,김상진,채승호 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B
This paper is results of extensive centrifuge model experiments about design factors influencing the bearing capacity and the settlement behaviors of SCP (Sand Compaction Pile). Centrifuge model tests were carried out changing design factors for SCP method such as replacement area ratio (as= 20, 40, 70%), improvement ratio to footing width (W/B = 1, 2, 3), and amount of fines in sand pile (#200 = 5, 10, 15). Therefore, the effects of these design factors on the bearing capacity and the settlement behavior of SCP were investigated and changes of stress concentratio rato due to such an design factors were also investigated. Centrifuge model testing technique for preparing and installing centrifuge model of sand compaction pile, using freezing them, was also developed. As results of centrifuge model tests, more fines in sand compaction pile increases the bearing capacity of SCP. Optimum improvement ratio to footing width was found to be 2. Values of stress concentration ratio was in the ranges of 1.5 - 3.5. The depth of bulging in sand piles was found in the range of 2.0 - 2.5 times of pile diameter.
준설매립지반의 압밀침하에 대한 쌍곡선 침하예측기법의 적용성 연구
유남재,전상현,전진용 江原大學校 産業技術硏究所 2008 産業技術硏究 Vol.28 No.A
Applicability of hyperbolic settlement prediction method to consolidation settlement in the dredged and reclaimed ground was assessed by analyzing results of centrifuge tests modelling self-weight consolidation of soft marine clay. From literature review about self-weight consolidation of soft marine clays located in southern coast in Korea, constitutive relationships of void ratio - effective stress - permeability and typical self-weight consolidation curves with time were obtained by analyzing centrifuge model experiments. For the condition of surcharge loading, exact solution of consolidation settlement curve obtained by using Terzaghi's consolidation theory was compared with results predicted by the hyperbolic method. It was found to have its own inherent error to predict final consolidation settlement. From results of analyzing the self-weight consolidation with time by using this method, it predicted relatively well in error range of 0.04~18% for the case of showing the linearity in the relationship between T vs T/S in the stage of consolidation degree of 60~90 %. However, it overestimated the final settlement with large errors if those relation curves were nonlinear.
유남재,박병수,정길수,김진황 江原大學校 産業技術硏究所 2001 産業技術硏究 Vol.21 No.B
The purpose of this study is to estimate ultimate uplift capacity of permanent anchor which was cast into weathered rock. The ultimate uplift capacity was estimated from the load-displacement curve of four different anchors which have different bond length. The creep test was performed for 15minutes under the maximum load of each step in order to understand the load-transfer property of permanent anchor and to decide which anchor to choose. The destruction range of soil due to the changes in load was estimated by installing dial gauge on the ground which was cast into the weathered rock. Ultimately, the study on the behavior of the anchor case into the weathered rock was performed by comparing and analyzing the estimated result of the UUC obtained by the full scale pull out test in the field with the exsting theoretical and practical results of soil and rock anchor.
유남재,전상현,전진용 江原大學校 産業技術硏究所 2007 産業技術硏究 Vol.27 No.B
This paper is research results of investigating the elastic settlement behavior of the coastal caisson structure built on the sandy deposit by comparing results of centrifuge model experiments and those of existing methods of estimating elastic settlement. Basic soil property tests such as specific gravity test, grain size distribution test and organic content test with disturbed soil sampled from the site were carried out. The centrifuge experiment of model satisfying the required design criteria was performed under 50 of artificial accelerated gravitational force condition. The Centrifuge model experimental results were compared and analyzed with the current methods of estimating settlement based on the elastic modulus obtained from the results of odeometer tests and empirical methods from literature reviews.