• Childhood Kidney Diseases
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• 제16권1호
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• pp.21-31
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• 2012

Focal segmental glomerulosclerosis (FSGS) is the name of the primary glomerular disease as well as the terminology to describe the secondary phenomena of any other glomerular diseases. It is characterized by sclerosis, hyalinosis, foam cell infiltration, vacuolar change of podocytes, and halo formation in the glomerulus. Throughout the interstitium, lymphocytes infiltration, tubular atrophy and vascular changes are accompanied. Occasionally, IgM and/or C3 depositions are noted in the sclerotic areas. Electron microscopically, diffuse effacement of foot processes are seen in non-sclerotic area like minimal change disease. Podocyte injury patterns including vacuolar changes are frequently examined. Recently, Columbia group has suggested morphologic classification of FSGS and they demonstrated very good prognosis of tip lesion and poor prognosis of both collapsing and cellular types. However, the pathogenetic classification has been suggested by others; hyperfilteration, podocyte injury, genetic lesions etc. Further studies are necessary to understand and treat this disease.

• Journal of Korean Society of Steel Construction
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• 제10권4호통권37호
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• pp.629-639
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• 1998

This paper summarizes the results of full-scale cyclic seismic performance tests on three column-tree type steel moment connections. Each test specimen consisted of a $H-600{\times}200$ beam and a $H-400{\times}400$ column of SS41 (SS400). Key parameter included was column PZ (panel zone) strength relative to beam strength. The seismic performance of specimen with stronger PZ tended to be inferior. Total plastic rotations available in the specimens ranged from 1.8 to 3.0 (% rad). The limited test results in this study seem to support the speculation that permitting PZ yielding shall be more beneficial to enhancing total plastic rotation capacity of the moment connection. Beam flange fracture across the heat affected zone and divot-type pullout of the column flange were observed in the tests. A conceptual mechanical model consistent with observed test results was also sought.

• Polymer(Korea)
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• 제27권3호
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• pp.249-254
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• 2003

The variation of chemical structure and physical properties of crosslinked polyethylene (XLPE) during thermal aging process was investigated. The formation of carbonyl functional group resulting from thermal oxidation reaction of XLPE was monitored using X-ray photoelectron spectroscopy and near infrared (NIR) spectroscopy. It was observed that the intensity of carbonyl peak observed at 1715 nm linearly increased with aging time in NIR spectroscopy. The linear relationship between NIR peak absorbance and aging time confirmed that NIR spectroscopy might be used as a proper tool for monitoring the aging process of polymeric materials. Also the formation of crosslinks during the aging process was monitored using thermal mechanical analysis, stress-strain test, and Shore hardness test. The change in the physical properties, such as the increase in the glass transition temperature from 110 to 132$^{\circ}C$, the decrease in the strain from 265 to 110%, as well as the increase in the shore D hardness from 32 to 50, was observed during the aging process.

• The Journal of Internal Korean Medicine
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• 제31권4호
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• pp.908-913
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• 2010

Bojungiki-tang is a traditional oriental medicine to boost the immune system. In this study, we investigated the effects of Bojungiki-tang by withdrawal of isolation of VRE colonization. Four cases of post-stroke patients with VRE colonization took Bojungiki-tang and continuously were followed up with stool cultures. After three times negative stool VRE, we withdrew isolation of VRE colonization. One case patient was diagnosed with VRE colonization in another hospital and had no withdrawal during that period. He was admitted to Kyung-hee University Oriental Medicine where he took Bojungiki-tang. After three times negative stool VRE, we withdrew isolation of the patient. These results demonstrate that Bojungiki-tang is effective on boosting immunity level. Further studies are needed to better characterize this protective effect of Bojungiki-tang.

• Journal of the Korean Institute of Gas
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• 제7권3호
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• pp.51-57
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• 2003

This paper presents the temperature distribution and deformation characteristics of O-ring groove geometry in which is strongly related the sealing performance of pressure vessels. A working gas in pressure vessel may be heated by a heater and pressurized by a gas compressor. Thus, the pressure vessel should keep high Pressure and temperature for a limited working period. For these operation conditions, the working gas in pressure vessels should not leak to the air by two O-rings with a rectangular groove. The FEM computed results indicate that the thermal and mechanical properties of metal sealing material is very important for stopping a leakage of hot gas in a vessel. Based on the results, high thermal conductive and low mechanical strength material is recommended as a metal sealing one. This may improve the sealing characteristics of O-ring sealing mechanism with a rectangular groove, which reduces the sealing gap between a flange and a cylinder and the width of O-ring groove.

• The Journal of Korean Medicine
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• 제31권4호
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• pp.129-140
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• 2010

Objective: The aim of this study was to prove adjacent effect of Oriental Medical Therapy on aphasia after stroke. Method: We studied patients who took K-WAB (AQ; aphasia quotient) twice during their language therapy at Kyunghee University Hospital & Oriental Medicine Hospital to retrospectively investigate the effect of Oriental medical therapy on aphasia. 18 patients with post-stroke aphasia were assigned to receive one of the following adjuncts: Group A that received language therapy with Oriental medical therapy (n=12) and Group B (n=6) that received language therapy only; AQ score of Group A was compared against Group B. Result: Total AQ score and most partial scores, except 'Contents delivery', were better in Group A. 'Total AQ score', 'Fluency', and 'Auditory verbal comprehension score' presented statistical significance. Conclusion: In this study, we demonstrated the effect of Oriental medical therapy on aphasia after stroke through AQ score improvement.

• Journal of Korean Society of Steel Construction
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• 제18권3호
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• pp.289-299
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• 2006

Orthotropic steel decks are manufactured by welding thin plates therefore it is inevitable that there are abundant works of welding process. On connection of transverse rib web, crossing point of longitudinal rib, transverse rib and deck plate and cut-out parts of transverse rib are the significant position of stress concentration phenomenon because of out of plane and oil-caning deformation caused by longitudinal rib distortion with shear force and distortion. In order to reduce the stress concentration phenomenon and improving fatigue performance at the crosing point and cut-out, structural analysis was performed considering the existence of scalop at conection and diaphragm which have same plane with transverse rib placed inside of longitudinal rib. Result o f the analysis show that there are the largest efect of stres concentration reduction when diaphragms are installed without scallop at connection, therefore these detail can improve the fatigue performance of orthotropic steel decks.

• Journal of the Korean Society for information Management
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• 제12권1호
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• pp.1-18
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• 1995

The purpose of this paper is to promote the effectiveness of information resources management in corporates or research centers. Every business needs to plan its strategy for the transition from doing business in an industrial economy to doing business in an information economy. Information and information technologies are integral to organizational mission and should play increasingly central role in strategic planning. The production, processing, and distribution of information resources is quickly becoming a major consumer good and an input in the production and decision making of all goods and services. Based upon the questionnaire survey and interview with information managers in information centers, this paper analyze several aspects, such as. the current sutuation, concept, elements and structure, techniques and training models of information resources management for corporates and research centers.

• Journal of the Korea Academia-Industrial cooperation Society
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• 제18권3호
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• pp.579-585
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• 2017

Development of a facade system that can reduce load factor and costs in high-rise building construction is required. The proposed cable wall system is used as a structural support by the glass-cable and can increase openness on lower elevations and the lobby area. Its use in high-rise buildings can reduce construction costs. Without transferring directly a strong initial tension of the cable to the building frame is connected to the steel member and the reinforced concrete structures, by absorbing the initial tension of the cable, it is possible to control the occurrence of a strong concentrated loads to the structure. Comparison of load-displacement test results from the numerical analysis with the test results showed reasonable agreement, Therefore, the proposed numerical results confirm good prediction of cable behavior for the facade system.

• Journal of Ginseng Research
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• 제33권1호
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• pp.1-7
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• 2009

Clinical and animal studies have shown that free radical overload is an important cause for a variety of diseases. Although ginseng has been recognized as antioxidant, how it modulates anti-oxidative process at the molecular level remains unknown. Free radical production is induced by tumor necrosis factor-$\alpha$ (TNF-$\alpha$) under the stress condition, and (TNF-$\alpha$) release is activated by TNF-$\alpha$-converting enzyme (TACE). Since TACE inhibitor is also well known for anti-inflammatory agent, ginseng seems to show anti-oxidative activity by repressing TACE pathway. Further studies on signal transduction would be warranted to elucidate molecular action mechanisms of ginseng on anti-oxidation and anti-inflammation.