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RISS 인기검색어
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- 저자 : 김찬중(Chan Jung Kim) (검색결과 233 건)
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알레르기비염 환자의 체질분포 및 특이적 IgE 측정법(MAST CLA)의 임상적 의의
김찬중,김혜정,김윤범,Kim, Chan-Jung,Kim, Hae-Jung,Kim, Yoon-Bum 대한한방안이비인후피부과학회 2002 한방안이비인후피부과학회지 Vol.15 No.2
Background and Objectives The diagnosis of allergic rhinitis includes detailed clinical history, physical examination and the use of either in vivo or vitro tests for relevant allergens. Skin test has been used the most commonly. Recently MAST CLA is used for determination of serum spcecific IgE, This study attempted to find out the distribution of Sasang Constitution and to compare the MAST CLA with skin tests in allergic rhinitis patients. Methods Skin tests, MAST CLA and Sasang Constitution study were performed for 35 allergic rhinitis patients who visited Kyunghee Oriental Medical Center from Sept. 2001 to Nov. 2001. Results 1. The ratio between male and female was 1:1.5. the peak age was the thirties(42.9$\%$) 2. 45.7$\%$ of patients had family history of allergic diseases and allergic rhinitis was the most common. 3. 51.4$\%$ of patients lived in A.P.T. and in preference of cool and warm, 54.3$\%$ of patients prefered both of cool and warm. 4. Among 24 cases who were consulted to dept. of Sasang, 45.8$\%$ was Taeumin. 5. 65.7$\%$ of patients reacted positive to skin test and the common offending allergen was D. pteronyssinus(82.6$\%$). 6. 25.7$\%$ of patients reacted positive to MAST CLA and the common offending allergen was D. farinae(88.9$\%$). 7. Among 22 cases who was performed skin test and MAST CLA the sensivity and specificity of MAST CLA was 27.4$\%$ and 94.9$\%$. There was significant correlations between MAST CLA and skin test(p=0.005, r=0.574, 1, spearman correlation coefficienct).
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용융공정으로 제조한 Y-Ba-Cu-O/BaCe<TEC>$O_{3}$ 초전도체의 자화특성
김찬중,박해웅,김기백,홍계원,Kim, Chan-Jung,Park, Hae-Ung,Kim, Gi-Baek,Hong, Gye-Won 한국재료학회 1995 한국재료학회지 Vol.5 No.4
BaCe$O_{3}$를 첨가하여 용융공정으로 제조한 단결정형 Y$Ba_{2}$$Cu_{3}$$O_{x}$(1-2-3) 초전도체의 온도에 대한 자화특성을 연구하였다. 고상반응법과 용융공정으로 0에서 30wt% BaCe$O_{3}$를 1-2-3 결정내에 미세 분산시켰다. 초전도체의 자화특성은 VSM(vibrating sample magnetometer)을 사용하여 77K, 60K, 40K와 20K, 2 Tesla 자장범위에서 측정하였다. BaCe$O_{3}$를 첨가하지 않은 겨우나 5wt% BaCe$O_{3}$를 첨가한 1-2-3 결정의 경우, 77K, 외부자장이 증가시 자화율 차이가 증가하는 비정상 자화특성이 관찰된다. 측정온도가 60K에서는 제2차 최대점이 나타나는 자장값이 고자장쪽으로 이동한다. 20K와 40K의 저온에서는 비정상자화특성이 2 T의 자장범위까지 관찰되지 않았다. 15wt%와 20wt% BaCe$O_{3}$첨가한 시편에서는 자장이 증가하면 자화율차이가 단순히 감소한다. Y-Ba-Cu-O의 flux pinning 기구를 BaCe$O_{3}$첨가에 의한 미세조직변화로 설명하였다.
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Allergy성(性) 접촉피부염(接觸皮膚炎)에 대(對)한 고삼(苦蔘), 황연(黃連)의 Iontophoresis 치료(治療) 효과(效果)
김찬중,구영희,남혜정,김윤범,Kim, Chan-Jung,Ku, Young-Hui,Nam, Hae-Jeong,Kim, Yoon-Bum 대한한방안이비인후피부과학회 2005 한방안이비인후피부과학회지 Vol.18 No.1
Objective : This study was performed to investigate the effects of Sophorae Radix and Coptidis Rhizoma-iontophoresis in allergic contact dermatitis. Methods : Contact hypersensitivity assay, video microscope, melanin-erythema levels, pH levels, hydration levels, WBC count, RBC count, neutrophil ratio, lymphocyte ratio and total IgE levels were measured. Results : At contact hypersensitivity assay, the right ear swellings in Sophorae Radix and Coptidis Rhizoma-iontophoresis group were decreased compared with control group, but have no statistical significance. At observation of skin morphologic change, many papules were seen in control group and keratins were seen in Sophorae Radix-iontophoresis group. At melanin levels, Sophorae Radix and Coptidis Rhizoma-iontophoresis groups showed no significant difference compared with control group. At pH levels, Sophorae Radix-iontophoresis group showed significant decreased with control group. At hydration levels, Sophorae Radix and Coptidis Rhizoma-iontophoreses groups showed to significant difference compared with control group. WBC count, RBC count and neutrophil ratio were significantly increased in Sophorae Radix and Coptidis Rhizoma-iontophoresis group compared with control group. Lymphocyte ratio and total IgE levels were significantly decreased in Sophorae Radix and Coptidis Rhizoma-iontophoresis groups compared with control group. At morphology of skin, inflammation was decreased and the thickness of epidermis was well preserved in Sophorae Radix and Coptidis Rhizoma-iontophoresis group. Conclusion : Sophorae Radix and Coptidis Rhizoma-iontophoresis had some anti-allergy, anti-inflammatory effects on allergic contact dermatitis, but had no effects on melanin-erythema levels, pH levels and hydration levels of skin.
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저 순도 BaCO<sub>3</sub> 분말을 사용한 Yba<sub>2</sub>Cu<sub>3</sub>O<sub>7-y</sub> 초전도체의 합성
김찬중,박순동,최정숙,전병혁,문종백,이상헌,성태현,Kim, Chan-Joong,Park, Soon-Dong,Choi, Jung-Suk,Jun, Byung-Hyuk,Moon, Jong-Baik,Lee, Sang-Heon,Sung, Tae-Hyun 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.1
[ $YBa_2Cu_3O_{7-y}$ ](123) powders were synthesized by the solid state reaction method using two different purity $BaCO_3$ powders (99.75% and 99.7% purity) and $Y_2O_3$ (99.9%) and CuO (99.9%) powders. The effect of $BaCO_3$ purity on the formation of a 123 phase and the superconducting properties were investigated. The mixtures of raw powders were calcined at temperature ranges of $800^{\circ}C-880^{\circ}C$ in air and finally made into a single grain samples by a melt processing with top seeding. It was found that a 123 phase was well formed at temperature above $870^{\circ}C$, but the purity effect on the 123 formation was negligible. The single-grain 123 samples prepared from the different $BaCO_3$ powders showed the same $T_c$ value of 90.5 K and similar $J_c$ values about $10^4\;A/cm^2$ at 0 T and 77 K, and $10^3\;A/cm^2$ at 2 T and 77 K. This result indicates that the low purity, cheap price $BaCO_3$ powder can be used as a raw material for the fabrication of single-grain, high-$J_c$ superconducting levitator.
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김찬중,Kim, Chan-Jung 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.12
In this article, the concept of gradient thickness is further extended to characterize the gradient behavior of the thermal and momentum boundary layer near a solid surface. The gradient thickness can replace the use of the conventional of the Nusselt and Reynolds numbers in terms of the gradient thickness provides a much easier grasp of the physical and practical meaning of the processes involved. Although there is no urgent need to discard the concept of the conventional convective heat transfer coefficient, the concept of the gradient thickness is believed to serve an efficient tool in helping students understand physics.
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김찬중,한은정,채병윤,Kim, Chan-Jung,Han, Eun-Jeong,Chae, Byung-Yoon 대한한방안이비인후피부과학회 2001 한방안이비인후피부과학회지 Vol.14 No.2
Lichen planus is a unique inflammatory cutaneous and mucous membrane reaction pattern of unknown etiology. Lichen planus of the soles generally occurs as an isolated phenomenon. The lesions differ from classic lesions of lichen planus in that the papules are larger and aggregate into semitransluecent plaques with a globular waxy surface. We report a 38-year-old female patient with lichen planus of right sole. The lesion shows erythematous eroded patch, swelling and severe pain. We thought that she might have envolved erysipelas. So, we gave her oriental medicine and antibiotics, so she was improved. But after long walking, lesion began to getting worse. There appeared oozing, ulcer, pus, pain and swelling in her lesion. We gave her oriental medicine and wet dressinf. But it didn't work.
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김찬중,조종두,Kim, Chan-Jung,Jo, Jong-Du 대한기계학회 2000 大韓機械學會論文集A Vol.24 No.2
Stress and strain in continuum mechanics have a mathematical form of the second order tensor. it is well-known that the usefulness of tensor components could be explained in a relation with coordin ates system transformation and Mohr's circle could be easily used to make a coordinate system transformation of tensors. However, Mohr's circle is applied mainly to plane problems and its use to three dimensional cases is limitedly employed. In this paper, we propose a matrix and dyadic representation of stress and strain tensors which could equivalently replace the graphical representation of second order tensors. The use of the proposed representation might provide a valuable means for the educational respects as well as research view point.
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