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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).
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.
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.
김찬중,Kim, Charn-Jung 대한기계학회 2000 大韓機械學會論文集B Vol.24 No.5
In the cylindrical coordinate, the origin r = 0 plays a role of the singularity and thus much care is needed to treat near-origin region. This work presents a new numerical scheme which is derived from the exact solution under the one-dimensional assumption in the radial direction. It is shown that the near-origin region can be properly treated by the radial-exponential scheme, whereas the numerical results from the conventional exponential scheme deviate considerably from the exact solution. Over the region of small ($ {\delta}r_e/r_e$ the present radial-exponential scheme turns out to be almost the same as the exponential scheme.
Superconductivity of Ce$O_2$-added Y-Ba-Cu-0 Superconductors Prepared by Partial Melt Process
김찬중,김기백,이규원,원동연,Kim, Chan-Joong,Kim, Ki-Baik,Lee, Kyu-Won,Won, Dong-Yeon Materials Research Society of Korea 1992 한국재료학회지 Vol.2 No.3
$CeO_2$를 첨가한 Y-Ba-Cu-0 초전도체를 포정반응을 포함한 준용용법으로 제조하여 미세조직과 초전도성을 관찰하였다. 첨가한 $CeO_2$는 포정반응중에 $BaCeO_3$로 변화하였으며, 이 $BaCeO_3$는 방향성 성장한 1-2-3 초전도상의 기지에 미세하게 분산된다. 초전도체의 $T_{c}$는 첨가된 $CeO_2$함량에 관계없이 90K 이상으로 매우 높았다. 이는 준용융공정을 적용함으로서 제2상물질을 초전도상으로부터 분리할 수 있었기 때문으로 사료된다. The $CeO_2$-added Y-Ba-Cu-O oxides were prepared by the partial melt process involving the peritectic reaction, liquid + 2-1-1 phase ${\rightarrow}$ 1-2-3 phase, to investigate the effect of the dopant on microstructure and superconductivity. During the peritec reaction, all the added $CeO_2$ was converted to $BaCeO_3$ particles which were finely dispersed in large 1-2-3 grains. Superconducting transition temperature($T_{c}R=0$ point) of the partial-melted samples was as high as 90K regardless of $CeO_2$ content up to 5wt%, which is owing to the separation of the second phase from the 1-2-3 superconducting phase.
중성자 회절법에 의한 Ni-W 합금 소결체의 격자상수 측정
김찬중,김민우,박순동,전병혁,장석원,성백석,Kim, Chan-Joong,Kim, Min-Woon,Park, Soon-Dong,Jun, Byung-Hyuk,Jang, Serk-Won,Seong, Baek-Seok 한국분말야금학회 2008 한국분말재료학회지 (KPMI) Vol.15 No.3
Ni-W(1-5 at.%) alloy rods were made by powder metallurgy process including powder mixing, compacting and subsequent sintering. Ni and W powder of appropriate compositions were mixed by a ball milling and isostatically pressed in a rubber mold into a rod. The compacted rods were sintered at $1000^{\circ}C-1150^{\circ}C$ at a reduced atmosphere for densification. The lattice parameters of Ni-W alloys were estimated by a high resolution neutron powder diffractometer. All sintered rods were found to have a face centered cubic structure without any impurity phase, but the diffraction peak locations were linearly shifted with increasing W content. The lattice parameter of a pure Ni rod was $3.5238{\AA}$ which is consistent with the value reported in JCPDS data. The lattice parameter of N-W alloy rods increased by $0.004{\AA}$ for 1 atomic % of W, which indicates the formation of a Ni-W solid solution due to the substitution of nickel atoms by tungsten atoms of larger size.
대면적 단결정 Gd<sub>1.5</sub>Ba<sub>2</sub>Cu<sub>3</sub>O<sub>7-y</sub> 벌크 초전도체의 초전도 특성
김찬중,박승연,김광모,박순동,전병혁,Kim, Chan-Joong,Park, Seung Yeon,Kim, Kwang-Mo,Park, Soon-Dong,Jun, Byung-Hyuk 한국재료학회 2012 한국재료학회지 Vol.22 No.11
Large single grain $Gd_{1.5}Ba_2Cu_3O_{7-y}$ (Gd1.5) bulk superconductors were fabricated by a top-seeded melt growth (TSMG) process using an $NdBa_2Cu_3O_{7-y}$ seed. The seeded Gd1.5 powder compacts with a diameter of 50 mm were subjected to the heating cycles of a TSMG process. After the TSMG process, the diameter of the single grain Gd1.5 compact was reduced to 43 mm owing to the volume contraction during the heat treatment. The superconducting transition temperature ($T_c$) of the top surface of the single grain Gd1.5 sample was as high as 93.5 K. The critical current densities ($J_cs$) at 77 K and 1T and 1.5 T were in ranges of 25,200-43,900 $A/cm^2$ and 10,000-23,000 $A/cm^2$, respectively. The maximum attractive force at 77 K of the sample field-cooled using an Nd-B-Fe permanent magnet (surface magnetic field of 0. 527 T) was 108.3 N; the maximum repulsive force of the zero field-cooled sample was 262 N. The magnetic flux density of the sample field-cooled at 77 K was 0.311T, which is approximately 85% of the applied magnetic field of 0.375 T. Microstructure investigation showed that many $Gd_2BaCuO_5$ (Gd211) particles of a few ${\mu}m$ in size, which are flux pinning sites of Gd123, were trapped within the $GdBa_2Cu_3O_{7-y}$ (Gd123) grain; unreacted $Ba_3Cu_5O_8$ liquid and Gd211 particles were present near the edge regions of the single grain Gd1.5 bulk compact.
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.