Search | Korea Science

Kim, Yong-Ro;Jang, Jong-Ho;Khil, Bae-Su;Baik, Chul;Nam, Jae-Hyun;Kim, Moo-Han
- Proceedings of the Korea Concrete Institute Conference
- /
- 2001.05a
- /
- pp.339-344
- /
- 2001
This study is to investigate properties of high strength.high flowing concrete using blast-furnace slag in temperature conditions of 5, 10, 15 and $20^{\circ}C$. The result of this study can be summarized as follows. 1) The use of blast-furnace slag leads to decrease of air content and increase of fluidity in the fresh concrete. 2) The early compressive strength of high strength.high flowing concrete containing blast-furnace slag is lower than the case with portland cement only. 3) The compressive strength development of incorporating in the concrete is poor at low temperature below about $15^{\circ}C$.
PDF

Chung, Yang Hyun;Beak, Cheal-Ha;Lee, Seung-Jae
- Nuclear Medicine and Molecular Imaging
- /
- v.42 no.2
- /
- pp.127-136
- /
- 2008
Monte Carlo simulation methods are especially useful in studying a variety of problems difficult to calculate by experimental or analytical approaches. Nowadays, they are extensively applied to simulate nuclear medicine instrumentations such as single photon emission computed tomography (SPECT) and positron emission tomography (PET) for assisting system design and optimizing imaging and processing protocols. The goal of this paper is to address the practical issues, a potential user of Monte Carlo simulations for nuclear medicine can encounter, to help them to choose a code. This review introduces the different types of Monte Carlo codes currently available for nuclear medicine, comments main features and properties for a code to be proper for a given purpose, and discusses current research trends in Monte Carlo codes.
PDF KSCI