Results 221 to 230 of about 163,290 (264)

The role of vasopressin in modulating circadian rhythm responses to phase shifts

Peptides, 1998
Telemetered body temperature (BT), heart rate (HR), and motor activity (AC) data were collected in vasopressin-containing, Long-Evans (LE) and vasopressin-deficient, Brattleboro (DI) rats. In Experiment 1, the rats were initially exposed to a 12 h/12 h light/dark cycle under ad-libitum feeding and were then subjected to either a phase-advance or phase ...
H M, Murphy, C H, Wideman, G R, Nadzam
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Giant terahertz magnetoelastic phase-shift modulator

Applied Physics Reviews
Developments in communication technologies depend on the parallel progress in materials innovation, data processing devices, and their strategic integration. Terahertz (THz) science and technology is the latest field to witness phenomenal growth in 6G communication and quantum materials devices.
Ayyappan Shyam, Brijesh Singh Mehra, Sanjeev Kumar, Charu Garg, Deepali Sharma, Gulloo Lal Prajapati, Gaurav Dubey, Ravi Shankar Singh, Sunil Nair, Dhanvir Singh Rana   +9 more
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Experimental demonstration of microring quadrature phase-shift keying modulators

Optics Letters, 2012
Advanced optical modulation formats are a key technology to increase the capacity of optical communication networks. Mach-Zehnder modulators are typically used to generate various modulation formats. Here, we report the first experimental demonstration of quadrature phase-shift keying (QPSK) modulation using compact microring modulators.
Po, Dong, Chongjin, Xie, Long, Chen, Nicolas K, Fontaine, Young-kai, Chen   +4 more
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A Low Power Transmitter for Phase-Shift Keying Modulation Schemes

2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications, 2006
This paper presents a novel continuous-phase phase-shift-keying (CP-PSK) modulation scheme and a low-power quadrature modulation architecture. In the proposed modulation scheme, phase-shift occurs in a smooth, continuous manner so that it can be implemented using an indirectly modulated frequency synthesizer.
Jaewon Lee, SeongHwan Cho
openaire   +1 more source

Non-Photic Modulation of Phase Shifts to Long Light Pulses

Journal of Biological Rhythms, 2007
Circadian rhythms can be reset by both photic and non-photic stimuli. Recent studies have used long light exposure to produce photic phase shifts or to enhance non-photic phase shifts. The presence or absence of light can also influence the expression of locomotor rhythms through masking; light during the night attenuates locomotor activity, while ...
Michael C, Antle, Roxanne, Sterniczuk, Victoria M, Smith, Kimberly, Hagel   +3 more
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A Variable Phase-Shift Frequency-Modulated Oscillator

Proceedings of the IRE, 1949
The theory of operation of a phase-shift type of oscillator is discussed briefly. This oscillator consists of a broad-band amplifier, the output of which is fed back to the input through an electronic phase-shifting circuit. The instantaneous frequency is controlled by the phase shift through this latter circuit.
openaire   +1 more source

Phase shifting by wavelength modulation in a cube beam splitter interferometer

Applied Optics, 2017
A low-cost and fully automated process for phase-shifting interferometry by continuously changing the input voltage of a laser diode under the scheme of a cube beam splitter interferometer, performing as a two-window common-path interferometric setup, is presented.
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Phase shifts in periodically modulated bistable potentials

Physical Review Letters, 1993
GAMMAITONI, Luca, MARCHESONI, Fabio
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Improved Triple-Phase-Shift Modulation for Bidirectional CLLC Converters

IEEE Transactions on Power Electronics, 2023
, Jun Min, Chris Botting
exaly  

ALTERNATING ASYMMETRICAL PHASE-SHIFT MODULATION

2022
REHLAENDER PHILIPP, BÖCKER JOACHIM, UNRUH ROLAND, SCHAFMEISTER FRANK   +3 more
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