منابع مشابه
A floral transmitting tissue-specific glycoprotein attracts pollen tubes and stimulates their growth
Pollen tubes elongate directionally in the extracellular matrix of pistil tissues to transport the male gametes from the apically located stigma to the basally located ovary for fertilization. The molecular mechanisms underlying directional pollen tube growth in the pistil are poorly understood. We have purified a glycoprotein, TTS, from tobacco stylar transmitting tissue, which supports pollen...
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There has been recent interest in characterizing UHF propagation within buildings and houses. Factory radio channels, however , have not been discussed previously in the literature. This paper details the results of narrow-hand propagation measurements performed at five factories. The extensive empirical data indicate that path loss is dependent upon local surroundings and is log-normally distr...
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متن کاملTransmitting and decoding facial expressions.
This article examines the human face as a transmitter of expression signals and the brain as a decoder of these expression signals. If the face has evolved to optimize transmission of such signals, the basic facial expressions should have minimal overlap in their information. If the brain has evolved to optimize categorization of expressions, it should be efficient with the information availabl...
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ژورنال
عنوان ژورنال: The Journal of the Institute of Television Engineers of Japan
سال: 1967
ISSN: 1884-9644
DOI: 10.3169/itej1954.21.689