The mechanism of hologram formation in fixation-free rehalogenating bleaching processes have been treated by different authors. The experiments carried out on Agfa 8E75 HD plates led to the conclusion that material transfer from the exposed to the unexposed zones is the main mechanism under theprocess. We present a simple model that explains the mechanism of hologram formation inside the emulsi...

admission of ignorance and the admission of uncertainty that there is a hope for the continuous motion of human beings in some direction that doesn't get confined, permanently blocked, as it has so many times before in various periods in the history of man.

1. The beginning of blood management The blood management system in Korea was initiated in 1952 with the establishment of the first blood storage facilities in the navy during the Korean War (1950-1953). The National Blood Center was opened in 1954, and the services of the Korean Red Cross (KRC) Blood Center were commenced in 1958 after blood services were transferred from the National Blood Ce...