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A case of Clostridium difficile infection complicated by acute respiratory distress syndrome treated with fecal microbiota transplantation

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World Journal of Gastroenterology 2014年第35期20卷 12687-12690页

作者： Ji Eun Kim tae-geun gweon Chang Dong Yeo Young-Seok Cho Gi Jun Kim Jae Young Kim Jong Wook Kim Hyunho Kim Hye Won Lee taeseok Lim Hyoju Ham Hyun Jin Oh Yeongbok Lee Jaeho Byeon Sung Soo Park Department of Internal Medicine Seoul St Mary’s hospitalThe Catholic University of KoreaCollege of Medicine Division of Gastroenterology Department of Internal MedicineSeoul St.Mary’s HospitalThe Catholic University of KoreaCollege of Medicine Division of Pulmonology Department of Internal MedicineUijeongbu St.Mary’s HospitalThe Catholic University of KoreaCollege of Medicine Division of Gastroenterology Department of Internal MedicineUijeongbu St.Mary’s HospitalThe Catholic University of KoreaCollege of Medicine

Acute respiratory distress syndrome is a life-threatening disorder caused mainly by *** difficile infection(CDI)is a common nosocomial diarrheal *** of normal intestinal flora by antibiotics is the main risk factor for *** use of broadspectrum antibiotics for serious medical conditions can make it difficult to treat CDI complicated by acute respiratory distress *** microbiota transplantation is a highly effective treatment in patients with refractory *** we report on a patient with refractory CDI and acute respiratory distress syndrome caused by pneumonia who was treated with fecal microbiota transplantation.

关键词： Clostridium difficile infection Acute respiratory distress syndrome Fecal microbiota transplantation

Expression Analysis of Proline Metabolism-related Genes From Halophyte Arabis stelleri under Osmotic Stress Conditions

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Journal of Integrative Plant Biology 2010年第10期52卷 891-903页

作者： Yuchul Jung Jungan Park Yunjung Choi Jin-gweon Yang Donggiun Kim Beom-Gi Kim Kyunghee Roh Dong-Hee Lee Chung-Kyoon Auh Sukchan Lee Department of Genetic Engineering Sungkyunkwan University Institute of Life Science and Technology Sungkyunkwan University National Academy of Agricultural Science Rural Development Administration Department of Life Science Ewha Womans University Department of Biological Sciences Mokpo National University

Arabis stelleri var. japonica evidenced stronger osmotic stress tolerance than Arabidopsis thaliana. Using an A. thaliana microarray chip, we determined changes in the expression of approximately 2 800 genes between A. stelleri plants treated with 0.2 M mannitol versus mock-treated plants. The most significant changes in the gene expression patterns were in genes defining cellular components or in genes associated with the endomembrane system, stimulus response, stress response, chemical stimulus response, and defense response. The expression patterns of three de novo proline biosynthesis enzymes were evaluated in A. stelleri var. japonica seedlings treated with 0.2 M mannitol, 0.2 M sorbitol, and 0.2 M NaCI. The expression of At-pyrroline-5-carboxylate synthetase was not affected by NaCI stress but was similarly induced by mannitol and sorbitol. The proline dehydrogenase gene, which is known to be repressed by dehydration stress and induced by free L-proline, was induced at an early stage by mannitol treatment, but the level of proline dehydrogenase was increased later by treatment with both mannitol and NaCI. The level of free L-proline accumulation increased progressively in response to treatments with mannitol, sorbitol, and NaCI. Mannitol induced L-proline accumulation more rapidly than NaCI or sorbitol. These findings demonstrate that the osmotic tolerance of the novel halophyte, Arabis stelleri, is associated with the accumulation of L-proline.

关键词： Expression Analysis of Proline Metabolism-related Genes From Halophyte Arabis stelleri under Osmotic Stress Conditions

The Effect of Nitrogen Gas Flow Rate on the Cr-Containing DLC (Diamond-Like Carbon) Coating by AEGD Hybrid-CVD Coating Process

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Advances in Materials Physics and Chemistry 2017年第5期7卷 198-211页

作者： Yong-Ki Cho Jae-Hoon Lee Masahiro Okumiya Sang-gweon Kim Korea Institute of Industrial Technology Heat Treatment R & D Group Incheon South Korea Toyota Technological Institute Nagoya Japan

The development of electric and hybrid automobiles has gained momentum with the growth of interest in the field of miniaturization of electrode materials. In particular, technologies that improve the electrical property of stainless steel, while maintaining corrosion resistance, are gaining interest in terms of maintaining specific resistivity. The study on metal doping in diamond-like carbon coating is currently in progress to enhance the characteristics of conductivity and corrosion resistance with excellent properties such as corrosion resistance and lubrication coating. It is the process of using Cr arc with DLC coating to actuate AEGD. The change of I(D)/I(G) (Graphite peak (G) and disordered bond peak (D)) ratio and G-peak position in Cr-containing DLC film causes graphitization and thus lowers the basic electric resistance. Simultaneous input of nitrogen gas leads to deposition of CrN by a specific ratio of Cr and N in the DLC coating, and the nitrogen atoms replace hydrogen in bonding to increase the sp3 bond structure in the DLC film, in which CrN is not deposited, to result in specific resistivity of a specific value or less.

关键词： Cr(N)-C:H Film Nitrogen Doping Graphitic Carbon Electrical Resistivity Plasma CVD Arc Enhanced Glow Discharge (AEGD)

Effect of Formation of Concentrated Stainless Steel Layer by Thermochemical Reaction and Addition of Hydrocarbon Gas on Sintered Part

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Advances in Materials Physics and Chemistry 2018年第5期8卷 227-245页

作者： Sang-gweon Kim Kuk-Hyun Yeo Jae-Hoon Lee Yong-Ki Cho Masahiro Okumiya Heat Treatment Technology R&BD Group Korea Institute of Industrial Technology Siheung Korea Toyota Technological Institute Nagoya Japan

As the environmental load has recently increased, the use of sintered stainless steel for automobile parts is increasing to help weight reducing, high performance and external exposure. Although the low priced pre-mixed sintered stainless steel powder parts are used instead of the high priced pre-alloyed powder parts, there have been problems of poor corrosion resistance and high price because the parts are sintered at low temperature due to the change of final part size. This paper describes the alloying process of producing parts having high hardness and corrosion resistance through expanded high concentration chromium on the surface only of sintered steel, which is relatively easier to sinter, using the pack-chromizing technology to improve hardness and corrosion resistance to solve the problem. Notable is the coating where the activated-chromium formed during the pack-chromizing process remains in the coating layer can lower the friction coefficient of the coated layer to up to 0.1. On the one hand, when the hydrocarbon gas was injected so as to promote the chromium-iron mixed carbide formed, the friction coefficient is increased to 0.4 with high hardness values. The thickness of the chromium alloying layer on the specimen can vary at the same temperature and same phase of the coating layer depending on which chromium resource materials (i.e. chromium or chromium-iron mixed powder) is used.

关键词： Pack-Chromizing Technology Sintered Stainless Steel Sintered Steel Tribological Test Binding Chloride

The Phenomenon of High Hardness Values on the S-Phase Layer of Austenitic Stainless Steel via Screen Plasma Nitriding Process

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Advances in Materials Physics and Chemistry 2018年第6期8卷 257-268页

作者： Sang-gweon Kim Kook-Hyun Yeo Yong-Ki Cho Jae-Hoon Lee Masahiro Okumiya Heat Treatment R&D Group Korea Institute of Industrial Technology (KITECH) Siheung Republic of Korea Toyota Technological Institute Nagoya Japan

The purpose of this study is to improve the surface properties of austenitic stainless steel using the double-folded electrode screen plasma nitriding (SPN) process. In general, the S-phase is well-known for its excellent properties such as improved hardness and wear resistance along with sustained corrosion resistance. The concentrated nitrogen via SPN process was injected to form S-phase with time at 713 K. This study was carried out under the conditions of 44 at% of nitrogen injection, which was higher than 25 at% known as the condition of no precipitation of S-phase formed by the SPN process, and 20 K higher than the maximum temperature without precipitation phase. The hardness analysis of stainless steel sample treated by the SPN process at 713 K showed a much higher value than the typical nitriding hardness at a depth of lower nitrogen than the maximum nitrogen concentration. The SPN 20 hr treated specimen showed the average value of 2339 HV while 40 hr showed the average value of 2215 HV. The result is attributed to the concentrated nitrogen formed in the SPN process reacting with the alloying elements contained in the base material to form fine precipitates, thus producing a synergy effect of the extreme hardening effect;that is, the movement of precipitates and dislocations due to the GP-zone (Guinier-Preston zone).

关键词： Double-Folded Electrode Austenitic Stainless Steel (ASS) Screen Plasma Nitriding (SPN) Process S-Phase Corrosion Resistance High Hardness

A Study on Release Property through Self Coating in LSR Injection Process

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Advances in Materials Physics and Chemistry 2015年第7期5卷 229-243页

作者： Sang-gweon Kim Hyung-Pil Park Jeong-Won Lee Yong-Jun Jeon Baeg-Soon Cha Heat Treatment R & D Group Research Institute of Advanced Manufacturing Technology KITECH (Korea Institute of Industrial Technology) Incheon Korea

This study explores the molding processes by using the Multi-component-injection molding (MCM) method, in which monolithic products are molded by attaching mixed liquid-silicone-rubbers (LSRs) to polybutylene terephthalate (PBT) that has the characteristic of self-binding while burning due to Pt catalysts. It is seen that this method increases the binding force between LSR and PBT. The surfaces coated with Polytetrafluoroethylene (PTFE), Cr, Ni, etc. have excellent peeling with plastic and such surfaces are compared with those treated with hot forging die and micro blasting without coating. When peeling tests are performed at the specified polymerization temperature and molding time after LSR molding on these surfaces of hot working die molds without coating, these surfaces show excellent peeling of molds and LSR products. In particular, they show better peeling after micro blasting than surfaces with Cr and Ni coating as well as surfaces without coating, and the peeling strength also decreases. The results of contact angle and XPS analysis indicate that the LSR binding force is enhanced as an effect of catalysts, though it is not found by SEM. According to the XPS analysis, the structures of the surfaces are close to methyl and vinyl materials that are produced while LSR molding.

关键词： Multi-Component-Injection Molding (MCM) Method Liquid-Silicone-Rubbers (LSRs) Peeling Test Self Coating Surface Analysis Sessile Water Drop Contact Angle Tests

Trend of Nitriding on Chromium-Molybdenum Steel via Low Temperature Screen Plasma Technology

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Advances in Materials Physics and Chemistry 2014年第8期4卷 141-152页

作者： Kuk-Hyun Yeo Sang-gweon Kim Jae-Hoon Lee Jung-Hyun Kong Masahiro Okumiya Heat Treatment Technology R&BD Group Korea Institute of Industrial Technology Incheon Korea Toyota Technological Institute Nagoya Japan

Low temperature screen plasma technology, a high plasma density, through using a low energy supply, shows excellent effects on a low alloy chromium-molybdenum steel for plastic molds because it does not show a compound layer and a high surface hardness without a deterioration in matrix hardness. For interest about hardening depth, both the screen plasma nitriding and plasma nitro-carburizing processes were tested including nitrogen, hydrogen and a methane mixed gas environmental at 653 K, 713 K. The optical emission spectroscopy (OES) has been analyzed during screen plasma nitriding (SPN) and a nitro-carburizing process (SPNC) was proceeded at 713 K and the same pressure. I find it difficult to dissociate nitrogen molecules perfectly with neutral nitrogen atoms via the DC-plasma nitriding process. Therefore, the SPN and SPNC process have shown a high density of plasma species even though low temperature plasma conditions have a high peak intensity of Hβ and Hγ in the results of the analysis by OES. The hardness value was measured with the micro-Vickers hardness tester after the SPN, SPNC process and the chemical composition of nitriding layers were traced by GDOES. The screen nitriding layer via the screen plasma technology has shown excellent properties with a thickness depth of about 850 ~ 900 HV without the deterioration of matrix hardness value.

关键词： Screen Plasma Technology Plasma Nitro-Carburizing Optical Emission Spectroscopy Without Compound Layer Chromium-Molybdenum Steel

总成本优势引导新选择——真空压力浸渍变压器的性能分析

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流程工业 2008年第2期 50-51页

作者： Kacey.C.Lee Sun Cheol gweon 杜邦韩国公司新韩电气有限公司

目前，来自与环境、高技术工业、安全和能源有关的各种社会需求已驱使变压器工业研究和开发适应各种应用的特定要求。从这一前景来说，真空压力浸渍（VPI）变压器能够向用户提供另一种选择，其性能优于几十年来人们选择的少数几种变压... 详细信息

目前，来自与环境、高技术工业、安全和能源有关的各种社会需求已驱使变压器工业研究和开发适应各种应用的特定要求。从这一前景来说，真空压力浸渍（VPI）变压器能够向用户提供另一种选择，其性能优于几十年来人们选择的少数几种变压器。在安全陛，可靠性和环保等方面，它的工作性能可能比其他变压器更好。

关键词：真空压力浸渍性能分析变压器成本优势高技术工业引导社会需求工作性能

乳腺肿块剪切波弹性成像中视觉评估的彩色叠加特征:量化和诊断性能

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国际医学放射学杂志 2013年第3期 285-286页

作者： H.M.gweon J.H.Youk E.J.Son J.A.Kim 楼青青 Department of Radiology Gangnam Severance HospitalYonsei University College of Medicine

目的确定乳腺肿块剪切波弹性成像(SWE)中的彩色叠加特征可否经标准差(SD)量化,并评估其诊断性能。方法分析了连续119例女性的133个乳腺病变,SWE检查后行超声引导空芯针穿刺活检或手术切除。用两种不同彩色叠加模式分类评价SWE彩色叠加... 详细信息

目的确定乳腺肿块剪切波弹性成像(SWE)中的彩色叠加特征可否经标准差(SD)量化,并评估其诊断性能。方法分析了连续119例女性的133个乳腺病变,SWE检查后行超声引导空芯针穿刺活检或手术切除。用两种不同彩色叠加模式分类评价SWE彩色叠加特征。感兴趣区包括整个乳腺病变,测量该区弹性值的量化SD。结果四色叠加模式的ROC曲线下面积(Az)为0.947;以模式2和3之间为临界点的敏感度和特异度为94.4%和81.4%。弹性均匀性的Az为0.887;以适度均匀和不均匀为临界点的敏感度和特异度为86.1%和82.5%。弹性SD的Az为0.944,以12.1为临界点的敏感度和特异度为88.9%和89.7%。彩色叠加特征与弹性量化SD呈显著相关(P<0.001)。结论 SWE的彩色叠加特征和弹性SD诊断性能优越并具有良好相关性。要点①剪切波弹性成像能提供乳腺肿块硬度的定性和定量信息。②可量化定性的彩色叠加特征可评价乳腺肿块的不均质度。③定性和定量弹性特征有助于区分良恶性病变。

关键词：弹性成像超声乳腺剪切波弹性