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이승헌,황해정,권성구,Lee, Seung-Heun,Hwang, Hae-Jeong,Kwon, Sung-Ku 한국세라믹학회 2006 한국세라믹학회지 Vol.43 No.7
Properties of slag cement that contained 50 wt% of blast furnace slag were studied when replaced blast furnace slag powder with electric arc furnace slag powder. Electric arc furnace slag was aged for about 2 months in the air by being crushed to be 1-3 mm in size. As a result of the experiment, it was proven that the water content for obtaining the same consistency became decreased as slag is replaced with electric arc furnace slag instead of blast furnace slag. Also, the workability of mortar increased about 30% at the same ratio of water to binder when blast furnace slag was completely replaced with electric arc furnace slag. The compressive strength of mortar on the 28 days increased when a slag replacement rate became 10 wt%, however, it rather decreased when the slag replacement rate exceeded 10 wt%. The heat of hydration became higher for the first 14 h in case of the replacement of slag cement by electric arc furnace slag. Yet, it decreased when 14 h had passed. Therefore, when all blast furnace slag was replaced with electric arc furnace slag, about 15 cal/g heat of hydration decreased when it passed about 72 h.
이승헌 대한건축학회지회연합회 2007 대한건축학회연합논문집 Vol.9 No.3
Heidegger's speculation on "Disclosure" makes it possible to know on image expression fundamentally. "Disclosure" means that the 'earth' and the 'world' are not fixed into one, but harmonize dynamically with each other under continuous mutual tension and mutual support. When they are well-weaved with each other, the two ways are collectively defined as "disclosure Image". In egard to the technique, the study analyzed 'allegory' and 'reactivation'. The former refers to showing image potentially, while the latter means embodying and revealing image apparently. Le Corbusier's late Architecture provides a simultaneous reactivation of various images through continuous cross-weaving rather than being inclined to either the earth or the world.
이승헌,박정희,김용수,윤영석,구완서,전희경,방병기,최의진,양철우 대한신장학회 1994 Kidney Research and Clinical Practice Vol.13 No.3
In order to investigate the prevalence and clinical course of autoimmune hemolytic anemia (AIHA) we evaluated retrospectively 729 renal transplant recipients. Results were as follows: 1) Incidence of AIHA according to ABO-minorincompatiblity was 8.0%(13/163). 2) Blood group of all donors was 0 type and that of recipients was A type(10/64; 15.6%), AB type(1/15; 6. 7%) and B type (2/47, 4.3%) 3) AIHA occur 13.3±4.6 days (range; 8-25) after renal transplantation and continue for 12.8±6.8 days (range; 3-26). 4) Laboratory finding was variable according to clinical severity. 5) Treatment of AIHA was made according to the severity of AIHA; no treatment (3cases), azathioprine alone (4 cases), combination therapy of azathioprine and plasmapheresis (6 cases). 6) Clinical course of AIHA was favorable in 12 cases except one expired case due to fulminant hemolytic crisis. In conclusion, nephrologist must alert to unexpected reduction in hematocrit or other signs of hemolysis in the early posttasnsplant period, pecially in ABO-minor-incompatible recipients. Careful follow-up of laboratory finding and early treatment of AIHA may be necessary to prevent fatal hemolytic crisis.