منابع مشابه
A Common Switch used by Plants and Animals
Comparisons of plant and animal development usually highlight their differences. The discovery that a kinase of the MAPKK class plays a key role in cell specification at the first division of the Arabidopsis embryo suggests that there may be similarities based on a common logic.
متن کاملAddressing animals with clicking sounds: Patterns and universals*
A strong tendency for people to produce clicking sounds to address animals is demonstrated in this paper. Based on investigations of 126 spots (67 Chinese spots and 59 non-Chinese spots) worldwide, 30 kinds of clicking sounds have been found, and all spots are observed to use clicking sounds to address at least one animal. There are 2.51 clicking sounds per spot overall. The most used clicking ...
متن کاملSurveying the Temporal Structure of Sounds Used in Music Perception
RECENTWORKFROMOURLABILLUSTRATESAMPLITUDE envelope’s crucial role in both perceptual (Schutz, 2009) and cognitive (Schutz & Stefanucci, 2010) processing. Consequently, we surveyed the amplitude envelopes of sounds used in Music Perception, categorizing them as either flat (i.e., trapezoidal shape), percussive (aka ‘‘damped’’ or ‘‘decaying’’), other, or undefined. Curiously, the undefined categor...
متن کاملEstimated communication range of social sounds used by bottlenose dolphins (Tursiops truncatus).
Bottlenose dolphins, Tursiops truncatus, exhibit flexible associations in which the compositions of groups change frequently. We investigated the potential distances over which female dolphins and their dependent calves could remain in acoustic contact. We quantified the propagation of sounds in the frequency range of typical dolphin whistles in shallow water areas and channels of Sarasota Bay,...
متن کاملToxoplasma gondii in animals used for human consumption.
Food-borne toxoplasmosis in humans may result from exposure to different stages of Toxoplasma gondii, in particular from the ingestion of tissue cysts or tachyzoites contained in meat, primary offal (viscera) or meat-derived products of many different animals, or the ingestion of sporulated oocysts that are contained in the environment and may contaminate food and water. Although the potential ...
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ژورنال
عنوان ژورنال: Nature
سال: 1961
ISSN: 0028-0836,1476-4687
DOI: 10.1038/191741a0