منابع مشابه
From darkness to daylight: cathemeral activity in primates
“Ecologically speaking, the diurnal world and the nocturnal world are completely different”. With this sentence Charles-Dominique (1975) introduced his historical paper describing the ecological interpretation of nocturnality and diurnality in primates. In fact, animals have to find different solutions to cope with these two opposing sensory environments which, consequently, have greatly influe...
متن کاملTrapped in the darkness of the night: thermal and energetic constraints of daylight flight in bats
Bats are one of the most successful mammalian groups, even though their foraging activities are restricted to the hours of twilight and night-time. Some studies suggested that bats became nocturnal because of overheating when flying in daylight. This is because--in contrast to feathered wings of birds--dark and naked wing membranes of bats efficiently absorb short-wave solar radiation. We hypot...
متن کاملAphid acceptance of barley exposed to volatile phytochemicals differs between plants exposed in daylight and darkness.
It is well known that volatile cues from damaged plants may induce resistance in neighboring plants. Much less is known about the effects of volatile interaction between undamaged plants. In this study, barley plants, Hordeum vulgare cv. Kara, were exposed to volatiles from undamaged plants of barley cv. Alva or thistle Cirsium vulgare, and to the volatile phytochemicals, methyl salicylate or m...
متن کاملGeneral or local anesthesia during endovascular procedures: sailing quiet in the darkness or fast under a daylight storm.
Deciding on the type of anesthesia traditionally depends on personal preference and experience of the interventionalist. Recent evidence appears to support the shift from general (GA) to local (LA) anesthesia in neurovascular interventions. Regional anesthesia reduces the risks of major complications associated with carotid endarterectomy compared with GA,1 However, unlike elective intervention...
متن کاملInto Darkness
Visual navigation of mobile robots has become a core capability that enables many interesting applications from planetary exploration to self-driving cars. While systems built on passive cameras have been shown to be robust in well-lit scenes, they cannot handle the range of conditions associated with a full diurnal cycle. Lidar, which is fairly invariant to ambient lighting conditions, offers ...
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ژورنال
عنوان ژورنال: Nature
سال: 1911
ISSN: 0028-0836,1476-4687
DOI: 10.1038/086484d0