Results 341 to 350 of about 621,593 (377)
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Glucocorticoids, Transmitters and Stress
British Journal of Psychiatry, 1992Many kinds of stress stimulate the neuroendocrine systems controlling catecholamine and glucocorticoid secretion. Stress-induced stimulation of CRF-containing neurons appears to be mediated by serotonergic, noradrenergic, and possibly other neuronal pathways.
Mocaër E +8 more
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2004
Publisher Summary This chapter discusses the basic transmitter building blocks—the oscillator, modulator, radio frequency (RF) amplifier and antenna. Short-range radio transmitters have one of four types of frequency control: inductor-capacitator (LC), surface acoustic wave (SAW), crystals, and synthesizer.
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Publisher Summary This chapter discusses the basic transmitter building blocks—the oscillator, modulator, radio frequency (RF) amplifier and antenna. Short-range radio transmitters have one of four types of frequency control: inductor-capacitator (LC), surface acoustic wave (SAW), crystals, and synthesizer.
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1996
Publisher Summary This chapter deals with transmitter, which is a device that develops a radio frequency (RF) signal on a specified frequency, adds modulation to it as appropriate, amplifies it to the desired output power level, and delivers to a load. Transmitter architecture is dictated by power level, modulation type, frequency, frequency tolerance
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Publisher Summary This chapter deals with transmitter, which is a device that develops a radio frequency (RF) signal on a specified frequency, adds modulation to it as appropriate, amplifies it to the desired output power level, and delivers to a load. Transmitter architecture is dictated by power level, modulation type, frequency, frequency tolerance
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Transmitters and reticulospinal neurons
Experimental Neurology, 1973Abstract Glycine and GABA strongly depress the firing of reticulospinal neurons, glycine being more effective than GABA. The effects of strychnine and bicuculline methochloride on synaptic inhibition and on the actions of these amino acids are consistent with the earlier evidence that both glycine and GABA are inhibitory transmitters in the medullary
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Excitatory transmitter neurotoxicity
Neurobiology of Aging, 1994The major excitatory neurotransmitters in the mammalian CNS--glutamate (Glu) and acetylcholine (ACh)--have vitally important beneficial functions but also harbor treacherous neurotoxic potential which, as described in this review, can be expressed in several different ways.
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The system and the transmitter
2004This chapter outlines radar operation in general terms, and then describes the transmission systems of the relatively large radars used in deep-sea ships, vessel traffic service (VTS) systems and firing-range surveillance.
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Is there a sleep transmitter?☆
Progress in Neurobiology, 1976Curt W. Spanis +1 more
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Journal of the Optical Society of America, 1951
The transmittance of a prism for a circular collimated beam of light tangent to the refracting edge of the prism is derived analytically in terms of the first-order modified bessel function of the first kind. The variables involved in the formula are kλ, the absorption coefficient of the glass at wavelength λ, and Bs=B/2, the “semibase” of the prism ...
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The transmittance of a prism for a circular collimated beam of light tangent to the refracting edge of the prism is derived analytically in terms of the first-order modified bessel function of the first kind. The variables involved in the formula are kλ, the absorption coefficient of the glass at wavelength λ, and Bs=B/2, the “semibase” of the prism ...
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Two's company, three's a crowd: can H2S be the third endogenous gaseous transmitter?
The FASEB Journal, 2002Rui Wang
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