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This paper presents a simple architecture for clock-fault detection in high-speed applications. The overall principle consists in converting a possible error of time to a logic voltage level. When a high voltage level is present at the output, a reliable clock is detected whereas a low voltage level implies a clock error. This detection system is intended… (More)
Rabies cell culture vaccines are able to induce circulating interferon in human sera. In 8/15 cases a low peak of interferon appears in the serum about 8 h after the vaccination. The inhibition has been considered as due to interferon because of the resistance to pH 2 and lack of activity on other animal species.