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오재화,김우혁,최웅 朝鮮大學校 建設技術硏究所 2004 建設技術硏究 Vol.24 No.2
Recently, cities are to be a new limelight in developing countries. Because, They have performed important roles in promoting and spreading economic and social development of the country. This study is concerned with all cities in Korea, and has three main purposes. First one is to select the general analysis variables affecting urban growth from existing theoretical literatures. Second one is to identify the dominant factors and their changes for the growth of cities in Korea through the analysis of correlation with growth rate. It could be done by case study of growth trends of all existing cities for analysis period. The last one is to find out a formula to estimate the future growth of cities in Korea. The results of this study could offer much suggestions to establish the development strategies of cities in Korea.
조현이,정종철,김호성,최재욱,성대경,서지훈,김성범,이계혁 大韓顎顔面成形再建外科學會 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.1
Osteosarcoma is a primary malignant tumor arising most often in the long bone, but rare in jaw bone. Especially osteogenic sarcoma of the mandible is a rare tumor, comprising less than 0.5% of all head and neck tumors. Osteosarcoma occurs cheifly in young persons, and presenting very survival rates. Histopathologically this tumor can be classified three types, osteoblastic, fibroblastic, chondroblastic and classified from low grade to high grade by anaplasia or mitosis of the tumor cells. Sometimes, the exact diagnosis of osteosarcoma is difficult especially in low grade osteosarcoma, even if clinical or radiographical findings suggest to osteosarcoma. So suspcious to malignant bone tumor in clinical or radiological findings, biopsy should be taked from deep portion and multiple area, and sharing the patient history and radiographs with pathologist will assist in the development of the diagnosis. We report a case of low grade osteosarcoma on the mandible initially difficulty in accurate diagnosis. The patient visited our hospital for routine dental treatment but radiographic findings displayed ill-defined radiolucency with osteoid formation on the mandible. Final diagnosis was difficulty in initial biopsy but subsequent biopsy taked from deep portion presented infiltrative growth and mitosis of the tumor cell in some area with small osteoid bone formation, so we could reach final diagnosis as low grade sarcoma. We treated this patient with bloc resection of the mandible and immediate reconstruction with iliac corticocancellous block.
A partial revision of <i>Allium</i> (Amaryllidaceae) in Korea and north‐eastern China
CHOI, HYEOK JAE,OH, BYOUNG UN Blackwell Publishing Ltd 2011 Botanical journal of the Linnean Society Vol.167 No.2
<P>A taxonomic revision of <I>Allium</I> in Korea and north‐eastern China is presented based on critical observations of wild populations and extensive herbarium material. Species delimitations are re‐evaluated on the basis of macro‐ and micromorphological and cytological characters, resulting in the recognition of 24 species comprised of 26 taxa, among which, four species and two varieties are endemic to Korea, and one species is endemic to China. One previously recognized species is placed into synonymy: <I>A. deltoidefistulosum</I> (under <I>A. sacculiferum</I>). <I>Allium spirale</I> and <I>A. tenuissimum</I> are newly recorded for Korea, and the common names ‘Cham‐du‐me‐bu‐chu’ and ‘Ae‐gi‐sil‐bu‐chu’ are given for these species, respectively. Lectotypes are designated for <I>A. deltoidefistulosum</I>, <I>A. monanthum</I> and <I>A. ophiopogon</I>. Illustrations, photographs and a key to species and varieties are provided in addition to complete descriptions including information on nomenclatural types, synonymies, chromosome numbers, distributions, habitat and specimens examined. This study will provide sound foundation for a future global monograph and the systematic understanding of <I>Allium</I>. © 2011 The Linnean Society of London, <I>Botanical Journal of the Linnean Society</I>, 2011, <B>167</B>, 153–211.</P>
Cytotoxic Isoquinoline Alkaloids from the Aerial Parts of Corydalis incisa
Choi, Sang-Un,Baek, Nam-In,Kim, Sung-Hoon,Yang, Jae-Heon,Eun, Jae-Soon,Shin, Tae-Yong,Lim, Jong-Pil,Lee, Jae-Hyeok,Jeon, Hoon,Yun, Mi-Young,Leem, Kang-Hyun,Park, Hee-Wook,Kim, Dae-Keun 대한약학회 2007 Archives of Pharmacal Research Vol.30 No.2
Three known isoquinoline alkaloids were isolated from the chloroform-soluble fraction of the methanolic extract of the aerial parts of Corydalis incisa (Papaveraceae) through repeated column chromatography. Their chemical structures were elucidated as corynoline (1), corynoloxine (2) and 6-oxocorynoline (3) using spectroscopic analysis. Compounds 1-3 exhibited cytotoxicity against human A549, SK-OV-3, SK-MEL-2 and HCT 15 tumor cells.
Jae Hyeok Choi,Tai Suk Roh,이원재,Woo Yeol Baek 대한두개안면성형외과학회 2022 Archives of Craniofacial Surgery Vol.23 No.4
Postoperative temporal hollowing is a common complication of craniotomy. Damage and repositioning of the temporalis muscle can lead to a depression in the temporal side of the skull with inferior bulging, worsening aesthetic outcomes. We report a case of cranioplasty with 3D-printed mesh involving an additional correction using a temporalis muscle sling to help address this problem. A 3D-printed bioabsorbable mesh was prepared based on preoperative facial CT, and was fixed to the hollowed area for tissue augmentation. The temporalis muscle was elevated and fanned out to its original position, and a sling was attached to a screw that was fixed to the mesh. For reinforcement, an additional sling was attached to another screw fixed to the mesh 2 to 3 cm vertically above the first screw. Aesthetic results were confirmed immediately after surgery and later during outpatient follow-up. Both depression and lateral bulging were resolved, and there was no delayed drooping of the temporalis muscle on 6-month follow-up. There were no complications, and the patient was satisfied with the appearance. This is a simple yet effective technique with a low risk of complications, and should be considered for postoperative temporal hollowing patients, especially those with severe lateral bulging
Choi Young-Jin,Lee Kyung-Suk,Jeong Jin Hyeok,Kim Kyunghoon,Yang Seung,Na Jae Yoon,Hwang Jae Kyoon,Choe Yunsoo,Kim Kyu Rang,Han Mae-Ja,Lee Yung-Seop,Oh Jae-Won 대한천식알레르기학회 2023 Allergy, Asthma & Immunology Research Vol.15 No.6
Purpose: Atmospheric fungi are associated with respiratory allergies in humans, and some fungal spores can cause allergic diseases. Environmental and biological factors influence the concentrations of atmospheric spores. In this study, we evaluated the climate change-induced annual variations in fungal spore concentrations and allergic sensitization rates in the Seoul Metropolitan Area over a period of 25 years. Methods: Fungal spores and pollen were obtained from Hanyang University Seoul and Guri Hospitals; they were identified and counted for 25 years (1998-2022). The study participants included patients who underwent tests for allergic diseases in both hospitals. Their allergenic sensitization rates were determined via allergic skin prick and serum tests, after which their sensitization rates to allergenic fungi and pollens were calculated. The daily climatic variables were obtained from the Korea Meteorological Administration. Results: The total annual atmospheric fungal concentrations decreased in both areas during the period. Simultaneously, we recruited 21,394 patients with allergies (asthma, 1,550; allergic rhinitis, 5,983; and atopic dermatitis, 5,422) from Seoul and Guri Hospitals for allergenic fungal sensitization evaluations over the period. The allergenic fungal sensitization rates decreased annually in both areas over that time `+(Alternaria [3.5%] and Cladosporium [4.4%] in 1998; Alternaria [0.2%] and Cladosporium [0.2%] in 2022). In contrast, the annual pollen concentrations increased with the sensitization rates to pollen in children. Conclusions: The atmospheric fungal concentrations decreased annually, with allergic sensitization rate decreasing over the period of 25 years. Allergenic fungal sporulation could decrease with climate changes, such as desertification and drought. Extended monitoring periods and further large-scale studies are required to confirm the causality and to evaluate the impact of climate change.