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오재근,최기영,송재흥,김영국,채건식,주유환,설정식,손인호,차성극,이상찬 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-
HClO₄(pH:2) 수용액에서 양극산화 방법으로 HgMnTe(HMT)의 표면에 산화막을 형성 시켰다. 산화막의 두께는 SEM으로 측정하였으며 10㎛였다. 전류-전압 특성곡선을 얻어 산화 피크 전압으로부터 HTeO₂?, TeO?, HHgO₂? 막이 형성되었음을 알 수 있었다. 산화시키지 않은 HMT와 HClO₄수용액에서 산화시킨 HMT에 대해 Hall전압 및 자기저항을 각각 측정하였다. 홀전압과 자기저항은 HMT보다 HMT산화막에서 더 컸으며 이것은 HHgO₂? 공격자가 홀의 역할을 하고, TeO₄? 산화막은 전하의 포획도를 낮게하기 때문으로 생각할 수 있다. Anodic oxidation processes on HgMnTe surface has been studied in standard aqueous HClO₄(pH:2) solution. The 10㎛ thickness of the anodic oxide layers was measured by SEM. The Composition of the anodic oxide layers are evaluated from current-voltage(I-V) characteristic of HgMnTe Oxidation. The layers are composed of mixed oxide. ??, TeO₄, and?? in HClO₄solution. Transport properties have been investigated in HMT oxide layer made in HClO₄solution and virgin HMT samples at 300K. Hall voltage and magnetoresistance are greater in oxide layer HMT than virgin HMT. As a result, we know that the vacancy of ??in an anodic oxide layer acts as hole and the resulting oxide ?? layer exhibit a reduced degree of charge trapping and increase magnetoresistance.
기장도,박치영,류보열,김태종,모성환,곽재정,문철호,박근홍,박유환,정춘해 朝鮮大學校 附設 醫學硏究所 1996 The Medical Journal of Chosun University Vol.21 No.1
Chronic neutrophilic leukemia is a very rare myeloproliferative disorder which is characterized by severe sustained mature neutrophilic leukocytosis in peripheral blood (PB), hepatosplenomegaly, elevated leukocyte alkaline phosphatase, serum uric acid. serun viatmin B 12 and the bleeding tendency despite normal platelet count and coagulation time, absence of philadelphia chromosome, and the absence of fever or underlying infection or disease sufficient to mimic a leukemoid reaction. We have experienced a 34-years-old male patient with atypical chronic neutrophilic leukemia. On admission, the leukocyte count was 56,860/uL. severe neutrophic leukocytosis with 76% neutrophils and rare immature forms on PB smear. Many neutrophils had toxic granules, and vacuoloes. Leukocyte alkaline phosphatase score was decreased. The cytogenetic study showed Philadelphia chromosome negative with normal karyotype.
( Geun-whi Park ),( Tae-wook Kim ),( Sung-min Park ),( Hyun-joo Lee ),( Hyun Ju Jin ),( Hyang-suk You ),( Woo-haing Shim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon- 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.2
Background: Eruptive pseudoangiomatosis (EPA) is acute, self-limiting dermatosis characterized by the sudden onset of bright red angioma-like papules often surrounded by pale halo. The pathogenesis of EPA is still unknown, but insect bites, especially mosquito have been proposed as a potential causative factor of the disease. Objectives: To clarify the relationship between mosquito bites and EPA after analyzing seasonal variation in the incidence of EPA. Methods: We retrospectively analyzed the clinical data of 55 patients with EPA at Pusan National University Hospitals (Busan and Yangsan) from 2005 to 2016. Results: Forty-eight (87.2%) of 55 patients were diagnosed as EPA in autumn (25/55, 45.4%), and summer (23/55, 41.8%). Seventeen patients (30.9%) admitted the history of mosquito bites. EPA incidence in autumn showed the tendency to increase and reached the peak in 2016. Interestingly, according to the press release, mosquito population in the autumn is increasing steadily. Conclusion: Though more studies are needed to elucidate clear relationship between EPA and mosquito bite, mosquito bite could be the very causative factor of EPA based on the result of this study.
[P132] White papules on the chest
( Geun-hwi Park ),( Sung-min Park ),( Hyun-joo Lee ),( Hyunju Jin ),( Hyang-suk You ),( Woo-haing Shim ),( Gun-wook Kim ),( Hoon-soo Kim ),( Hyun-chang Ko ),( Byung-soo Kim ),( Moon-bum Kim ) 대한피부과학회 2017 대한피부과학회 학술발표대회집 Vol.69 No.1
Fibroelastolytic papulosis (FEP) encompasses a spectrum of two disorders that were previously reported as pseudoxanthoma elasticum-like papillary dermal elastolysis (PXE-PDE) and white fibrous papulosis of the neck (WFPN). It is characterized by asymptomatic, non-confluent, non-follicular and firm papules occurring predominantly on the neck in elderly individuals. FEP on upper chest without involving the neck have been rarely reported. A 81-year-old female patient presented with an increasing number of asymptomatic white papules on her chest for the past 6 months. Histopathologic evaluation showed decreased and fragmented elastic fibers without dermal fibrosis in upper dermis. There was no past history of vascular, gastrointestinal or ocular disorders and no family history of similar skin lesions. Our patient showed clinical characteristics resembling WFPN, and histologic findings similar to that of PXE-PDE. Therefore, we diagnosed her as FEP. There had been no change in the lesions on follow up 6 months later. Although it had been reported that WFPN occurred on the neck or trunk including neck, this case suggests that this condition also can occur on only chest without involving the neck Through this case, in the investigation of white papules on localized area of the chest, FEP should be included in the differential diagnosis.
A micro-system based on glass-nanoporous silicon for optical sensing of organic solvent vapor.
Kim, Young-You,Kim, Han-Jung,Kim, Ho-Jong,Choi, Dae-Geun,Cheng, Horchhong American Scientific Publishers 2012 Journal of Nanoscience and Nanotechnology Vol.12 No.6
<P>We present a recent experimental study on the application of nanoporous silicon (np-Si) to an optical vapor sensor. We fabricated the micro-system based on a glass-nanoporous silicon layer on a p(+)-type silicon wafer. To check the selectivity and sensitivity of the np-Si layer to organic vapors, we prepared three types of np-Si layer samples--a single layer, distributed Bragg reflector (DBR) layer, and microcavity layer--and investigated its reflectance spectra upon exposure to different concentrations of various organic vapors. When the np-Si layer samples were exposed to the organic vapors, a red-shift occurred in the reflectance spectrum, and we determined that this red-shift can be attributed to the changes in the refractive index induced by the capillary condensation of the organic vapor within the pores of the np-Si layer. The np-Si layer samples showed excellent sensing ability to different types and concentrations of organic vapors. After removing the organic vapors, the reflectance spectrum immediately returned to its original state.</P>
고대산 북서사면(경기도 연천군) 지역의 식물상 및 산림군락 분류에 관한 연구
김남영,김흥식,김영설,김정유,박완근 江原大學校 森林科學硏究所 2004 Journal of Forest Science Vol.20 No.-
2003년 3월부터 10월까지 고대산을 대상으로 식물상과 산림군락을 조사하였다. 관속식물은 94과 299속 481종 1아종 66변종 4품종 1교잡종으로 총 553종류인 것으로 나타났으며, 한국특산식물은 8과 11속 13종 총 13종류, 희귀 및 멸종위기식물은 12과 15속 15속 15종 총 15종류, 귀화식물은 9과 15속 17종 총 17종류로 나타났다. 산림군락은 신갈나무-철쭉군목, 신갈나무-생강나무군단, 갈참나무-신갈나무군락, 굴참나무-신갈나무군락, 당단풍-신갈나무군락으로 전체 1군목, 1군단, 3군락이 분포하는 것으로 나타났다. The study was carried out to investigate the flora and community classification of forest vegetation in Mt. Godae from March to October, 2003. As a result of that, the vascular plants were 94 families, 299 genera, 481 species, 1 subspecies, 66 varieties, 4 formae, 1 hybrid, 553 taxa in all; korean endemic plants were 8 families, 11 genera, 13 species, 13 taxa in all; rare or endangered plants were 12 families, 15 genera, 15 species, 15 taxa in all; naturalized plants were 9 families, 15 genera, 17 species, 17 taxa in all. forest vegetation was classified into 1 order, 1 alliance, 3 communities; Rhododendro - Quercetalia mongolicae (Kim 1990) Lindero - Quercion mongolicae (Kim 1990) A. Fraxinus rhynchophylla - Quercus mongolica Community B. Quercus variabilis - Quercus mongolica Community C. Acer pseudo-sieboldianum - Quercus mongolica Community
Kim, You-Sun,Choi, Seng-Jin,Choi, Jun-Pyo,Jeon, Seong-Gyu,Oh, Sun-Young,Lee, Byung-Jae,Gho, Yong-Song,Lee, Chun-Geun,Zhu, Zhou,Elias, Jack A.,Kim, Yoon-Keun Korean Society for Biochemistry and Molecular Bion 2010 Experimental and molecular medicine Vol.42 No.8
IL-4 and IL-13 are closely related cytokines that are produced by Th2 cells. However, IL-4 and IL-13 have different effects on the development of asthma phenotypes. Here, we evaluated downstream molecular mechanisms involved in the development of Th2 type asthma phenotypes. A murine model of Th2 asthma was used that involved intraperitoneal sensitization with an allergen (ovalbumin) plus alum and then challenge with ovalbumin alone. Asthma phenotypes, including airway- hyperresponsiveness (AHR), lung inflammation, and immunologic parameters were evaluated after allergen challenge in mice deficient in candidate genes. The present study showed that methacholine AHR and lung inflammation developed in allergen-challenged IL-4-deficient mice but not in allergen-challenged IL-13-deficient mice. In addition, the production of OVA-specific IgG2a and IFN-${\gamma}$-inducible protein (IP)-10 was also impaired in the absence of IL-13, but not of IL-4. Lung-targeted IFN-${\gamma}$ over-expression in the airways enhanced methacholine AHR and non-eosinophilic inflammation; in addition, these asthma phenotypes were impaired in allergen-challenged IFN-${\gamma}$-deficient mice. Moreover, AHR, non-eosinophilic inflammation, and IFN-${\gamma}$ expression were impaired in allergen- challenged IL-$12R{\beta}2$- and STAT4-deficient mice; however, AHR and non-eosinophilic inflammation were not impaired in allergen-challenged IL-$4R{\alpha}$-deficient mice, and these phenomena were accompanied by the enhanced expression of IL-12 and IFN-${\gamma}$. The present data suggest that IL-13-mediated asthma phenotypes, such as AHR and non-eosinophilic inflammation, in the Th2 type asthma are dependent on the IL-12-STAT4-IFN-${\gamma}$ axis, and that these asthma phenotypes are independent of IL-4Ralpha-mediated signaling.
김흥식,김인수,홍금희,김남영,박광서,김정유,박완근 江原大學校 森林科學硏究所 2003 Journal of Forest Science Vol.19 No.-
2002년 3월부터 2003년 10월까지 유명산 자연휴양림을 대상으로 식물상과 산림군락구조를 조사한 결과, 관속식물이 98과 331속 570종 1아종 81변종 4품종 2교잡종으로 총 658종류로 나타났으며, 한국특산식물은 10과 14속 13종 2변종 1교잡종 총 16종류. 희귀 및 멸종위기식물은 9과 10속 11종 총 11종류, 귀화식물은 12과 22속 28종 총 28종류로 나타났다. 산림군락은 신갈나무-철쭉군목, 신갈나무-생강나무군단, 소나무-산거울군락, 잣나무-주름조개풀군락, 물푸레나무-신갈나무군락, 층층나무-신갈나무군락, 굴참나무-신갈나무군락, 싸리-신갈나무군락으로 전체 1군목, 1군단, 6군락이 분포하는 것으로 나타났다. The study was carried out to investigate the flora and community classification of forest vegetation in Mt. Yumyeong from March, 2002 to October, 2003. As a result of that, the vascular plants were 98 families, 331 genera, 570 species. 1 subspecies, 81 varieties, 4 formae, 2 hybrid, 658 taxa in all. Korean endemic plants were 10 families, 14 genera, 13 species, 2 variaties, 1 hybrid. 16 taxa in all ;, rare and endangered plants were 9 families, 10 genera. 11 species, 11 taxa in all ; naturalized plants were 12 families, 22 genera, 28 species, 28 taxa in all. The forest vegetation was classified into 1 order, 1 alliance. 6 communities : Rhododendro - Quercetalia mongolicae (Kim, 1990) Lindero - Quercion mongolicae (Kim, 1990) A. Carex humilis var. nana - Pinus densiflora Community B. Oplismenus undulatifolius - Pinus koraiensis Community C. Fraxinius rhynchophylla - Quercus mongolica Community D. Cornus controversa - Quercus mongolica Community E. Quercus variabilis - Quercus mongolica Community F. Lespedeza bicolor - Quercus mongolica Community