• Journal of Chest Surgery
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• v.41 no.3
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• pp.381-385
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• 2008

A 69-year-old man was admitted to our hospital for deep vein thrombosis, and he had experienced two episodes of left leg swelling: one happened after an 11 hour-air trip from Europe in June 2007, and the other developed 3 days after an operation for a herniated lumbar disc in July 2007. We treated him for a deep vein thrombosis of the deep femoral vein after admission. However, we arrived at the final diagnosis of angioleiomyosarcoma after the operation for the tentative diagnosis of deep vein thrombosis. We removed the firmly engorged deep femoral vein on the second operation. We report here on a case of angioleiomyosarcoma that arose from the deep femoral vein.

• Economic and Environmental Geology
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• v.53 no.5
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• pp.597-608
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• 2020

Even after the Gyeongju earthquake and the Pohang earthquake, hundreds of aftershocks and micro-earthquakes are still occurring in the southeastern part of the Korean Peninsula. These phenomena mean that the stress is constantly working, implying that another huge earthquake may occur in the future. Therefore, the gravity field interpretation method was used to analyze the deep geological structure of the Pohang-Ulsan region in the southeastern Korean Peninsula. First, a gravity survey was performed to collect the insufficient data and to calculate the detailed Bouguer gravity anomaly in the study area. Based on the gravity anomaly data, the location, direction, and maximum depth of deep fault lines were analyzed using the inversion methods "Curvature analysis" and "Euler deconvolution method". As a result, it is interpreted that at least six fault lines(C1~C6) exist in deep depth. The deep fault line C1 is well correlated to the Yeonil Tectonic Line(YTL), suggesting that YTL is extended up to about 4000m deep. The deep fault line C2 consists of several segment faults and well correlated to the fault lines on the surface. Inferred fault lines C3, C4, and C5 have an NW-SE direction, which is parallel to the Ulsan fault. The deep fault line C6 has the direction of NE-SW, and it is interpreted that the eastern boundary fault of Eoil Basin is extended to the deep. Comparing the inferred fault lines with the distribution of micro-earthquakes, the location of the deep fault line C1 is well correlated to the hypocenter of micro-earthquakes. This implies that faults in deep depth are related to the recent earthquakes in the southeastern Korean Peninsula.

• Proceedings of the KSEEG Conference
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• 1999.04a
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• pp.321-325
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• 1999

• Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT)
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• v.12 no.2
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• pp.121-133
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• 2014

If the spent fuels or the high-level radioactive wastes can be disposed of in the depth of 3~5 km and more stable rock formation, it has several advantages. For example, (1)significant fluid flow through basement rock is prevented, in part, by low permeability, poorly connected transport pathways, and (2)overburden self-sealing. (3)Deep fluids also resist vertical movement because they are density stratified and reducing conditions will sharply limit solubility of most dose-critical radionuclides at the depth. Finally, (4) high ionic strengths of deep fluids will prevent colloidal transport. Therefore, as an alternative disposal concept to the deep geological disposal concept(DGD), very deep borehole disposal(DBD) technology is under consideration in number of countries in terms of its outstanding safety and cost effectiveness. In this paper, for the preliminary applicability analyses of the DBD system for the spent fuels or high level wastes, the DBD concepts which have been developed by some countries according to the rapid advance in the development of drilling technology were reviewed. To do this, the general concept of DBD system was checked and the study cases of foreign countries were described and analyzed. These results will be used as an input for the analyses of applicability for DBD in Korea.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.11 no.11
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• pp.4331-4337
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• 2010

This study was to investigate the effectiveness of deep neck flexor exercise with using modalities in pain reduction and functional improvement to those who have chronic neck pain. The subjects were instructed the patients with chronic neck pain (37 people). Randomized study design of two groups was used: Only using modalities group and deep neck flexor exercise group with using modalities, and each group was taken by three times per week for 12 weeks. To evaluate the effects of therapies was to research the questionnaire about VAS(visual analog scale), NDI(neck disability index), and endurance of deep neck flexor before experiment, after 6 weeks and after 12 weeks. In visual analog scale(VAS) and neck disability index(NDI), there were significant decreased in using modalities group and deep neck flexor exercise group after 6 weeks more than before experiments but were only significant decrease in deep neck flexor exercise group after 12 weeks. The endurance of deep neck flexor was significantly increased in deep neck flexor exercise group after 6 weeks and 12 weeks more than before experiments. Thorough these results deep neck flexor exercise has the effectiveness to the therapies of chronic neck pain. Using the deep neck flexor exercise would be high effects on pain reduction and functional improvement and also considered in improving the living qualities of those who have chronic neck pain.

• Journal of Korean Society of Forest Science
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• v.79 no.4
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• pp.419-423
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• 1990

This study was carried out to investigate the cause of pith-damaged wood formation, the state of growth, and difference of chemical composition of Japanese Larix(L. leptolepis Gorden). 1. Larix grew normaly to 10 years, and the volume increment was 32.4%. But it was gradually decreased to 19.4% from 11 to 13 years that the heartwood damage was occurred. Therefore, the volume increment was decreased 13%. The decayed wood was formed from fire wound portion of bark by forest fire. The volume loss from pith-dagmaged wood occurred by forest fire was more than 20%. 2. On the ash content, heartwood(0.05%) and pith-damaged wood(0.08%) was lower than sapwood(0.29%). The difference of extractive contents are considered the reason. It is considered that this ash content difference is depend upon the extractive contents among sap, heart and decayed wood parts. Holocellulose contents were from 54.3% to 59.3% and there were no difference among heartwood, pith-damaged wood, and sapwood, On the pentosan contents, heartwood(6.3%) and pith-damaged wood(6.6%) were higher than sapwood. Lignin contents of pith-damaged wood was tower than heartwood (34.4%). This seems to weaken all kinds of wood strength.

• Proceedings of the Korea Water Resources Association Conference
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• 2009.05a
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• pp.1929-1933
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• 2009

수자원 수요가 급증함에 따라 단열 암반 대수층의 지하수를 개발해 이용하려는 연구가 많이 이루어지고 있다. 본 연구에서는 단열암반 대수층의 지하수 유동 특성을 알아보기 위해 한국원자력연구원 연구 지역 내에 NX 규격의 직경 78mm를 갖는 500m 심도의 심부시추공 (DB-01)을 굴착하였다. DB-01에 대한 시추공 단열조사 (BHTV) 및 시추코아 분석을 통해서 심부 시추공에 대한 예비 투수성 구조를 도출하였으며, 투수성이 큰 구조로 단열과 연결된 지점으로 판단되는 심도에 대해서 현장 수리시험을 수행하여, 결정질 암반의 투수성 구조에 대한 수리특성을 규명하였다. 그 결과를 분석하여 비교적 투수성이 큰 심도를 결정질 암반의 대수층이라 정의하였다. 수리특성이 비슷한 3가지의 그룹 중 3그룹은 투수계수도 가장 크고 단열빈도도 밀집되어 있는 것으로 나와 심부 200m에서 250m이하의 이 단열구간은 수자원으로 지하수의 활용이 가능하다고 여겨진다.

• Progress in Medical Physics
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• v.13 no.4
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• pp.234-241
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• 2002

The depth electrode technique, especially using the occipito-temporal route is widely used in the clinic, since it is known to be the most precise method about the invasive study of the mesial temporal lobe epilepsy. The depth electrode with the occipito-temporal route has been applied with manual calculation of MR images. Inherently there are some factor causing significant errors due to geometrical axis alignment, such as miss alignment of horizontal or vertical cutting line. In order to correct it in manually, it takes a long time. In this study, authors has developed the software for automate calculation of MRI wording for instance calculation and for the no time delaying operation. Authors could show that this software is useful for the clinic after applying if for 33 cases of the patients.

• The Journal of Engineering Geology
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• v.26 no.2
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• pp.277-290
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• 2016

Deep geological cross-sectional data is generally not common nor easy to construct, because it is expensive and requires a great deal of time. As a result, geological interpretations at depth are limited. Many scientists attempt to construct geological cross-sections at depth using geological surface data and geophysical data. In this paper, we suggest a method for constructing cross-sections from limited geological surface data in a target area. The reason for this study is to construct and interpret geological cros-sections at depth to evaluate heat flow anomaly along the Yangsan fault. The Yangsan Fault passes through the south-eastern part of the Korean Peninsula. The cross-section is constructed from Sangbukmyeon to Unchonmyeon passing perpendicularly through the Yangsan Fault System trending NW-SE direction. The geological cross-section is constructed using the following data: (1) Lithologic distributions and main structural elements. (2) Extensity of sedimentary rock and igneous rock, from field mapping. (3) Fault dimension calculated based on geometry of exposed surface rupture, and (4) Seismic and core logging data. The Yangsan Fault System is composed of the Jain fault, Milyang fault, Moryang fault, Yangsan fault, Dongnae fault, and Ingwang fault which strike NNE-SSW. According to field observation, the western section of the Yangsan fault bounded by igneous rocks and in the eastern section sedimentary rocks are dominant. Using surface fault length we infer that the Yangsan Fault System has developed to a depth of kilometers beneath the surface. According to seismic data, sedimentary rocks that are adjacent to the Yangsan fault are thin and getting thicker towards the east of the section. In this study we also suggest a new method to recognize faults using core loggings. This analysis could be used to estimate fault locations at different scales.

• Journal of Chest Surgery
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• v.36 no.6
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• pp.431-435
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• 2003

Deep sternal wound infection (with or without acute mediastinitis) is a serious complication of open heart surgery, with high rates of associated morbidity and mortality, and prolonged hospitallization. The result of treatment largely depends on timely diagnosis and appropriate surgical management. Postoperative deep sternal wound infections in 4 cases were successfully treated with extensive debridement, pressurized jet irrigation with antibiotic solution, sternal refixation by Robicsek method, and dilute antibiotic irrigation via irrigation-suction system. We report 4 cases with review of articles.