نتایج جستجو برای: disappearance
تعداد نتایج: 14262 فیلتر نتایج به سال:
Prior to World War II, the time of persistence of mustard gas (bis ,-chloroethyl) sulfide (hereafter referred to as H), in tissues had not adequately been determined. Although it was known that in aqueous environments H is rapidly hydrolysed to innocuous products, it seemed possible that this substance, because of its high lipoid solubility, might persist for much longer periods in the lipoid f...
Because of the massive amount of incoming visual information, perception is fundamentally selective. We are aware of only a small subset of our visual input at any given moment, and a great deal of activity can occur right in front of our eyes without reaching awareness. While previous work has shown that even salient visual objects can go unseen, here we demonstrate the opposite pattern, where...
We assessed how much of the observed decline in the prevalence of trachoma in a district of Western Nepal was due to an antibiotic treatment program and how much to an underlying secular trend outside of the program. Although antibiotic treatments clearly have an effect at 6 months, we were unable to show that this effect persisted at 12 months; in fact, long-term gains may be due to a secular ...
The aim of the paper is to give illustrative examples of apparent disappearance phenomena which are typical of laser and biological systems. It is well known that canards play an important role in the theory of mixed-mode oscillations consisting of large amplitude, and followed by small amplitude oscillations. In a sense we consider limiting cases of mixed-mode oscillations, when large amplitud...
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