• 제목/요약/키워드: Middle wall

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A Histological Study on the Heart in the False dace (Pseudorasbora parva) (참붕어(Pseudorasbora parva) 심장의 조직학적 연구)

  • Park, No Kwan;Reu, Dong Suck
    • Korean Journal of Ichthyology
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    • v.27 no.1
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    • pp.26-32
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    • 2015
  • The histological structure of the heart in Pseudorasbora parva was investigated by light microscope. The heart consisted of four consecutive chambers, the sinus venosus, atrium, ventricle and bulbus arteriosus. The wall of the sinus venosus was divided into endocardium, myocardium and epicardium, and the walls of the atrium and ventricle were divided into endocardium, subendocardium, myocardium, subepicardium and epicardium, and the wall of the bulbus arteriosus was divided into endocardium, subendocardium (ridge tissue), middle layer, subepicardium and epicardium. The valves were observed in the sinoatrial, artrioventricular and bulboventricular junctions. The sinus venosus wall was mostly made up of collagen. The rings of tissue were observed at the sinoatrial junction. The atrium was composed of a spongy trabeculate myocardium surrounded by an external rim of thin myocardium, and collagens were distributed in the subepicardium and trabeculae. The ventricle was a spongy myocardium with vessels in subepicardium. In the subepicardium and trabeculae of the ventricle, collagens were distributed. In the bulbus arteriosus, the diameter and length of the ridges were differed. The endocardial cells were convex and the non-clustered subendocardial cells showed irregular shapes. The cells of the middle layer were arranged into incomplete layers that showed different orientations. The subepicardium was formed by cells of different morphology. Collagens and elastins were demonstrated in the subendocardium, middle layer and subepicardium of the bulbus arteriosus. The epicardium was a single layer composed of flattened cells.

Function Disease Symptom And Organ Coordination of Tri-Energizer Based on the Materiality of Tri-Energizer (삼초유형(三焦有形)으로 살펴본 삼초(三焦)의 기능(機能), 병증(病證) 및 장부배합(臟腑配合))

  • Yoon, Chang-Yeol
    • Journal of Korean Medical classics
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    • v.26 no.2
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    • pp.1-7
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    • 2013
  • Objective & Method : By investigating physiological function of tri-energizer, symptoms, and organ coordination, we obtained following conclusion. Tri-energizer is the membrane structure that surrounds the five visceral organs and six hollow organs, and filled with fluid. Tri-energizer acts as the passage for the flow of qi energy. Result & Conclusion : Therefore, dysfunction of the tri-energizer is caused by abnormal evaporation and metabolism. Upper-energizer regulates cardiopulmonary function, middle-energizer regulates spleen and stomach functions, and lower-energizer regulates liver, kidneys, small and large intestines, and bladder functions. Such a functional specialization is possible by receiving the source of qi through the wall wrapping around the internal organs. Tri-energizer represents the exterior and interior relationship by acting as the membrane structure supporting the five visceral organs and six hollow organs and at the same time, as the pericardium surrounding the heart.

A Study on the Pulsatile Characteristics of Blood flow in the Middle Cerebral Artery (중대뇌동맥내 혈류의 맥동특성에 관한 연구)

  • Jang, Dong-Sik;Lee, Yeon-Won;Oshima, Marie
    • Proceedings of the KSME Conference
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    • 2003.04a
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    • pp.1930-1935
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    • 2003
  • The aim of this study is to apply engineering modeling tools to examine hemodynamics such as blood flow patterns or shear stress distributions, in order to determine the link between hemodynamics and cerebral aneurysms. Image-Based Simulation is used to analyze the realistic middle cerebral artery constructed from computed tomography raw data. As a result of simulation, high wall shear stress is appeared at the bifurcated region. And existence of the recirculation flow at the inlet of bifurcation($D_2$) is predict to affect at the development of the cerebral aneurysm.

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A Study on Solar Radiation Analysis and Saving Elements of Heating Load according to the Location and Type of Housing in Multi-family Apartments (공동주택 주동형태별 세대위치에 따른 일사분석 및 난방부하 절감요소에 관한 연구)

  • Kim, Soo-Jeong;Park, Doo-Yong;Kim, Kang-Soo
    • KIEAE Journal
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    • v.13 no.1
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    • pp.47-55
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    • 2013
  • This study aims to evaluate the correlation between vertical solar radiation and the level of heating load according to the location and type of housing in multi-family apartments. This study shows that heating load is related with factors such as wall loss, window loss, ventilation loss and solar radiation gain. The heating load increases in the order of the middle floors, the highest floors and the lowest floors. The lowest and the highest floors are the most vulnerable floors, and it should be as emphasized as the middle floors. The heating load saving proposal contains 52 Alt. that shows heating load savings from min. 4% to max. 49%. The goal is to reduce the heating load of the highest and the lowest floors to the level of the middle floors. The result showed that there are 3 Alt. for the lowest floors and 16 Alt. for the highest floors as the heating load saving proposal. This study suggests integrated application to compose saving elements of heating load. so it could be utilized as a data for the construction of passive houses.

Microstructure of Lupin Seed;a Comparative Study With Soybean (루핀콩과 대두의 미세구조에 관한 비교 연구)

  • Lee, Cherl-Ho;Kim, Jeong-Kyo
    • Korean Journal of Food Science and Technology
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    • v.17 no.6
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    • pp.454-459
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    • 1985
  • The structure of the seed of Lupinue angustifolius was studied in order to investigate the Food quality of lupin seed in comparision with soybean. The cotyledonary cells of lupinseed was in egg-like shape and much (more than 4 times) larger than those of soybean. The microstructure of cotyledonary cells of lupinseed was characterized with thick cell wall having distinct pit-pairs. The protein bodies in lupinseed cotyledon cell contained numerous crystaloids, which was absent in soybean. The middle lamella of soybean cell was partially disintegrated by excessive heat treatment ($120^{\circ}C$, 20 min), whereas those of lupinseed did not change much by heting at $120^{\circ}C$ for 130 min.

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An Osteolytic Meningioma en Plaque of the Sphenoid Ridge

  • Baek, Jin-Uk;Cho, Young-Dae;Yoo, Jae-Chul
    • Journal of Korean Neurosurgical Society
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    • v.43 no.1
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    • pp.34-36
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    • 2008
  • Meningioma en plaque (MEP) is a rare tumor characterized more by its clinical and biological behavior than its histological appearance. Hyperostosis of the skull is one of the characteristic signs of MEP. This bony change can produce clinical symptoms and signs in MEP by pressing against adjacent structures. The authors report a rare case of an osteolytic MEP extending from the sphenoid wing into the orbital wall, middle fossa, and temporalis muscle.

Effect of a Heated Curing on Concrete Compressive Strength for Tunnel Form Construction (터널 폼 공법에서 강제양생이 콘크리트강도에 미치는 영향)

  • 이충우;이광수;신성우
    • Proceedings of the Korea Concrete Institute Conference
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    • 1993.10a
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    • pp.232-236
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    • 1993
  • The Tunnel Form(T/F) system instead of traditional euro form has been tried to reduce construction duration and to improve concrete quality in reinforced concrete wall type apartment construction. To find the relationship for concrete compressive strength between cylinder mold and slab, the different curing locations of concrete cylinder mold in the room have been investigated. The test results showed that the compressive strength of the cylinder concrete with middle-upper location in the room was most near concrete compression strength with respect to slab concrete strength.

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A Experimental Study on Waste Water Concentration by Separating Method of Freezing (동결분리방법을 이용한 폐수농축에 관한 실험적 연구)

  • Kim, Jung-Sik
    • Proceedings of the Korean Society of Marine Engineers Conference
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    • 2006.06a
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    • pp.51-52
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    • 2006
  • This study was progressed on the freezing behavior of waste water in relation to freeze concentration method useful to waste water treatment system of small and middle size and which can re-use purified water. The object of this experiment is comparing a pollutant contain of the frozen layer and of an aqueous solution by cooling wall temperature, a flow field effect and a initial thickness of frozen layer.

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A Case of Primary Localized Laryngo-tracheobronchial Amyloidosis (원발성 국한성 후두 기관기관지형 유전분증 1예)

  • Lee, Seok Jeong;Lee, Won Yeon;Jung, Soon Hee;Kwon, Woocheol;Lee, Shun Nyung;Lee, Namseok;Kim, Sang-Ha;Shin, Kye Chul;Yong, Seok Joong
    • Tuberculosis and Respiratory Diseases
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    • v.65 no.6
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    • pp.532-536
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    • 2008
  • We report on a case of a patient with laryngo-tracheobronchial amyloidosis who complained of cough, sputum, and hoarseness. A chest X-ray showed consolidation in the right middle lobe. A chest CT scan showed diffuse, irregular narrowing of the tracheobronchial tree and atelectasis of the right middle lobe, with calcification of bronchial wall. Bronchoscopic findings were multinodular submucosal thickening of the right vocal cord, and yellowish multinodular submucosal thickening from the lower trachea through both main bronchi, as well as the lingular division of the left upper lobe, the right middle lobe, and the right lower lobe. The right middle lobe bronchus was nearly obstructed. The diagnosis of amyloidosis was made by multiple ronchoscopic biopsies on the right vocal cord and both bronchi. Pathologic findings were characteristic apple-green birefringence under polarized microscopy with Congo-red stain. The patient had no evidence of systemic amyloidosis. The patient is under conservative symptomatic treatment.

A Study on the Analysis of Outside Mural Paintings treated in Maitreya Hall of Geumsan-sa Buddhist Temple, Korea (금산사미륵전 외벽화 보존처리된 벽체의 분석 연구)

  • Han, Kyeong-Soon;Lee, Sang-Jin;Lee, Haw-Soo
    • Journal of Conservation Science
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    • v.26 no.4
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    • pp.445-458
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    • 2010
  • The deterioration and structural damage such as exfoliation, cracks, and separation of painted layer on the wall paintings of Maitreya Hall in Geumsan-sa temple have been accelerated since it was re-positioned to the original place after the dismantling from the building in 1993. The examination of which result and analysis described in this study, is a preliminary survey for establishing conservation plan of the wall paintings. It aimed at the understanding of the physical and chemical characteristics of the materials applied in the 1993 conservation. The research focused on the south walls which displayed the worst condition compared to other walls. Samples for the examination for the understanding of micro-structure, chemical composition, cristalisation, and particle distribution, were collected for finishing, middle, and consolidated layers of the walls between pillars and the ones between brackets. Those samples were collected from separated fragments of the walls. The sample analysis displayed that: 1. the 1993 conservation used the similar type of weathered soil as the original for the finishing layer, and such soil and sand for the middle layer; 2. those walls are composed of a group of mineral particles which are relatively equal in size and shape and in their distribution; 3. the mineral particles were cohered forming solid aggregate due to the application of acrylic resin for the reinforcement on the wall. The main composition of crystalisation on the first and the second reinforcement layers of the back walls were lime plaster ($CaSO_4{\cdot}2H_2O$). The overall examination confirmed that the priority of the future conservation treatment should be given to the removal of the first and the second layers of reinforcement and the treatment on the back walls which were partially consolidated.