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RISS 인기검색어
- 검색키워드
- 저자 : ( Masafumi Arima ) (검색결과 2 건)
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Review : Prostaglandin D2 and TH2 Inflammation in the Pathogenesis of Bronchial Asthma
( Masafumi Arima ),( Takeshi Fukuda ) 대한내과학회 2011 The Korean Journal of Internal Medicine Vol.26 No.1
Prostaglandin D2 (PGD2) is a major prostanoid, produced mainly by mast cells, in allergic diseases, including bronchial asthma. PGD2-induced vasodilatation and increased permeability are well-known classical effects that may be involved in allergic inflammation. Recently, novel functions of PGD2 have been identified. To date, D prostanoid receptor (DP) and chemoattractant receptor homologous molecule expressed on T(H)2 cells (CRT(H)2) have been shown to be major PGD2-related receptors. These two receptors have pivotal roles mediating allergic diseases by regulating the functions of various cell types, such as T(H)2 cells, eosinophils, basophils, mast cells, dendritic cells, and epithelial cells. This review will focus on the current understanding of the roles of PGD2 and its metabolites in T(H)2 inflammation and the pathogenesis of bronchial asthma. (Korean J Intern Med 2011;26:8-18)
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MAGNETIC PROPERTIES OF Co - FERRITE FILMS BY SOLID REACTION AT LOW TEMPERATURE
Masafumi CHIBA,Chikao UEMURA,Hiroshi ARIMA,Yoshiharu KOIZUMI 한국자기학회 1995 韓國磁氣學會誌 Vol.5 No.5
Co-ferrite (CoO-Fe₂O₃) thin films have been prepared by two ways of low temperature solid reaction including oxidation process, being based on Co-layer/α-Fe₂O₃ films and Co-layer/Fe₂O₃ films. Magnetic properties of both Co-ferrite films have been measured and compared. The samples from Co-layer/Fe₃O₄ films have a large coercive force in the direction perpendicular and have a great poler kerr rotation angle at wavelength 700 ㎚ than ones from Co-layer/α-Fe₂O₃ films. The typical magnetic properties are as follows; saturation magnetization 4πMs, 2.9 kG; remnant magnetization 4πMr, 2.0 kG; coercive force Hc, 4.0 kOe; kerr rotation angle Φk, 0.39 deg (λ = 700 ㎚); and initial magnetization energy E, 3.3×10^6 erg/㎤, respectively.
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