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가족력을 지닌 5세 남아에서 아이스크림으로 유발된한랭 두드러기 1례
김동수,신수아,오재원,이하백 대한 소아알레르기 호흡기학회 2005 Allergy Asthma & Respiratory Disease Vol.15 No.1
Cold urticaria is characterized by the development of urticaria and/or angioedema after cold exposure. It is an uncommon form of physical urticaria and thought to be rare in children. There is a higher rate of family history of atopy and cold urticaria. We report a case of cold urticaria in a 5-years-old boy who showed perioral swelling, wheal and flare associated with ice cream. He had a relevant family history on his grandmother's side with cold urticaria, and on his father's side with dermographism, respectively. In this patient, cold urticaria was confirmed by ice cube test and a brief review followed
김동수,김형의,박재범,강보식,성백주,Kim, Dong-Soo,Kim, Hyoung-Eui,Park, Jae-Bum,Kang, Bo-Sig,Sung, Baek-Ju 한국정밀공학회 1995 한국정밀공학회지 Vol.12 No.11
Pneumatic System has been mainly used as main equipment for actuation and control of fluid force in manufacturing industry. For velocity control of piston, meter-out restriction method is used in many cases. In this systems, meter-out restriction method is adopted for analysing the Dynamic Charging and Discharging Process which is Variable Volume Chamber. Experiments has been conducted for different supply pressure condition. As a experimental result, charge side chamber pressure rises to supply pressure rapidily and discharge side chamber pressure decreases. Also, when the air in the cylinder is discharged, tempdrature of air decreases steeply. Restriction of the Cylinder sometimes freeze and it dose not function. The result will be useful for the analysis of pneumatic system.