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윤여성,이준섭,Yoon, Yeo-sung,Lee, Joon-sup 대한수의학회 1997 大韓獸醫學會誌 Vol.37 No.3
This study was performed to investigate the gross anatomical features and microscopical structures of the hemal nodes and the hemolymph nodes in the water deer (Hydropotes inermis) found in Kangwon-do, Korea. The hemal nodes and hemolymph nodes were observed mainly in the periphery of the thoracic and abdominal aortae of the animals. The size of hemal nodes was generally smaller than that of the hemolymph nodes, and the shape of the both organs was spherical or ovoid. The color of the hemal nodes was red or black while that of the hemolymph nodes was gray with red bands. The hemal nodes were surrounded by a thin connective tissue capsule and there were extensive subcapsular and deep sinuses distended by a great number of erythrocytes. Although a few number of lymphatic nodules and small areas of diffuse lymphatic tissues were observed in the parenchyma, no typical cortex and medulla were defined in the hemal node. Small numbers of blood vessels were found at the connective tissue capsule but lymph vessel was not observed microscopically in this organ. The hemolymph nodes were covered by a relatively thick connective tissue capsule and there was a hilus in each node. The parenchyma was divided into cortex and medulla. The cortex was composed of a few numbers of lymphatic nodules and some diffuse lymphatic tissues. The medulla comprised medullary sinus and cords. Afferent and efferent lymph vessels were observed at the periphery of the capsule and the hilus, respectively. The subcapsular and medullary sinuses were not extensive but filled with small numbers of erythrocytes. The stroma of hemal node and hemolymph node was composed of reticular cells and fibers, and the capsule and trabecula consisted of collagenous fibers with smooth muscle fibers.
윤여성,한정희,Yoon, Yeo-sung,Han, Jeong-hee 대한수의학회 1991 大韓獸醫學會誌 Vol.31 No.4
Deer hemal nodes were studied by gross anatomy and light microscopy. Hemal nodes were scattered in the periphery of thoracic and abdominal aortae, and spherical or avoid in shape. A hemal node consisted of a thin capsule and a hilum, and had numerous small subcapsular and deep sinuses distended by a great number of erythrocytes. Although a few lymphatic nodules and tissues were seen in the parenchyma, no typical cortex and medulla was defined. Blood vessels occurred, but lymph vessel was not observed in nodes. The parenchyma of the hemal node consisted of many erythrocytes and lymphocytes, and a few granulocytes, plasma cells megakaryocytes and macrophages. The stroma was composed of reticular cells and fibers. The capsule and trabecula was a collagenous connective tissue with smooth myofibers. The above findings suggest that the hemal nodes are involved in blood storage, blood filtration and immune reaction.
2P-32 Al<sub>2</sub>O<sub>3</sub> 입자 표면의 아크릴 코팅을 이용한 열경화성 복합재료의 내전압 및 방열 특성
윤여성,오미혜,문동준,이승영 한국공업화학회 2017 한국공업화학회 연구논문 초록집 Vol.2017 No.1
전기자동차, 파워모듈, 전자전력 기기들이 최근 들어 고출력을 요구하고 있어 내전압 특성이 우수한 재료를 요구하고 있으며, 이와 동시에 발생되는 열을 제어하기 위한 방열 대책이 필요하다. 그러나 절연과 방열특성을 동시에 만족하는 소재에 대한 연구들은 많지 않은 상황이다. 방열 성능을 향상시키기 위해 다양한 필러들이 사용되고 있으며 이들의 형상이나 입자 크기에 따라 방열성능이 달라지며, 특히 필러의 충진밀도에 따라 방열 성능 및 내전압 특성에 영향을 미치고 있다. 본 연구에서는 무기필러인 Al<sub>2</sub>O<sub>3</sub> 표면에 아크릴 코팅을 수행하여 필러와 필러 사이의 슬립성 향상으로 필러의 충진율 높였다. 아크릴이 코팅된 Al<sub>2</sub>O<sub>3</sub> 와 실리콘 수지를 고속 믹서를 이용하여 슬러리를 제조 하였으며 점도계를 이용하여 흐름성을 측정하였다. 제조된 슬러리를 130°C에서 경화시켜 내전압 및 방열 특성이 향상된 실리콘 패드를 제조 하였다. 또한 코팅된 Al<sub>2</sub>O<sub>3</sub> 함량을 변화에 따른 열적 특성에 대한 연구를 수행 하였다. 연구된 방열 시트는 Scanning electron microscope(SEM)를 통해 표면 미세구조를 분석하였고, Heat flow법을 이용하여 열전도도를 측정하였다.
윤여성,신재원,이준섭,Yoon, Yeo-sung,Shin, Jae-won,Lee, Joon-sup 대한수의학회 1999 大韓獸醫學會誌 Vol.39 No.5
Hemal nodes and hemolymph nodes are lymphoid organs that share morphologic and functional characteristics of lymph nodes and spleens. The aim of the present study was to obtain new informations on the distinct morphological structures of hemal nodes and hemolymph nodes according to ages, and to get the basic data for their functions in Korean native goats. Goats were divided into 5 groups, consisting of 3 animals aged 1, 3, 6, 10 and 12 months, respectively. Ultrastructural features of the organs were observed by transmission and scanning electron microscopes. The sinuses of hemal nodes and hemolymph nodes were lined by endothelial-like reticular cells which had euchromatin-rich nuclei and many cytoplasmic processes, surrounding collagen fibrils. Macrophages containing phagocytosed erythrocytes were often noted in the diffuse lymphatic tissues of hemal nodes and hemolymph nodes. Some mast cells were in contact with the plasma cells near the blood vessel. Hemal nodes and hemolymph nodes had venous sinusal-like vessels which were different from the deep sinus. The lymph vessels with valves were observed in the capsule of the hemolymph node. There were no ultrastructural differences of the organs in the age different groups of the animals. These results suggest that hemal nodes and hemolymph nodes may take part in hemopoiesis, blood filtration and immune reaction in Korean native goats.
윤여성,장민혁,문동준,장은진,오미혜,박주일 한국융합학회 2022 한국융합학회논문지 Vol.13 No.4
전기자동차용 배터리 하우징 소재로 사용되고 있는 금속 소재에서 경량소재로 대체하기 위한 열가소성복합 재료를 제조하였다. 매트릭스 소재는 고분자 소재인 나일론 6를 사용 하였으며 방열 성능을 부여하기 위해 열전도 도가 높은 Boron Nitrate(BN)를 사용하였다. 동일한 필러의 함량 및 입자 크기에 따른 열전도성 고분자 복합재료의 방열 특성을 분석하였다. 필러의 함량이 증가할수록 열전도도 값이 증가하였으며, 입자크기가 60∼70㎛인 BN의 함량이 50%인 복합재료의 경우 1.4W/mK 이상 열전도도를 나타내었다. 입자 크기가 클수록 입자 간 계면 접촉면이 넓어져 Thermal path가 이루어짐을 확인하였다. 제조된 열전도성 고분자복합재료를 이용하여 배터리 하우징을 제작하였으며 셀의 충방전 동안 온도 변화를 관찰하여 배터리 하우징의 대체 소재로서의 가능성을 확인하였다. Manufactured thermoplastic composite materials to replace the metal materials used as battery housing materials for electric vehicles with lightweight materials. As the matrix material, nylon 6 which is a polymer material was used. Boron Nitrate(BN), which has high thermal conductivity, was used to provide heat dissipation performance. The heat dissipation characteristics of the thermally conductive polymer composite material according to the BN content and particle size were analyzed. The thermal conductivity value increased as the filler content increased, and composite materials particle size of 60 to 70㎛ and BN content of 50%, the thermal conductivity was 1.4 W/mK. The larger the particle size, the wider the inter-particle interface contact surface, which means that a thermal path was formed. wider the interfacial contact surface between the particles, and the thermal path was formed. A battery housing was manufactured using the manufactured thermally conductive polymer composite material, and the temperature change during charging and discharging of the cell was observed, and the possibility as a substitute material for the battery housing was confirmed.)