Results 41 to 50 of about 2,813,006 (349)
Meitan xuebaoThe supercritical carbon dioxide (SC-CO2) jet has a wide application prospect in drilling engineering, and its low coal breaking pressure threshold and high efficiency can improve drilling efficiency.
Yujie DENG +5 more
doaj +1 more source
Photosynthesis Research, 2015 Pulse-amplitude modulated (PAM) fluorometry is extensively used to characterize photosynthetic organisms on the slow time-scale (1–1000 s). The saturation pulse method allows determination of the quantum yields of maximal (FM) and minimal fluorescence ...
A. M. Acuña +5 more
semanticscholar +1 more source
Pulse Amplitude and Width Detector-Patent [PDF]
, 1970 Electrical testing apparatus for detecting amplitude and width of transient ...
Slayden, M. D., Staley, H. W.
core +1 more source
Relation between respiratory variations in pulse oximetry plethysmographic waveform amplitude and arterial pulse pressure in ventilated patients. [PDF]
, 2005 IntroductionRespiratory variation in arterial pulse pressure is a reliable predictor of fluid responsiveness in mechanically ventilated patients with circulatory failure.
Besnard, Cyril +4 more
core +2 more sources
By dawn or dusk—how circadian timing rewrites bacterial infection outcomes
FEBS Letters, EarlyView.The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo +2 more
wiley +1 more source
The role and implications of mammalian cellular circadian entrainment
FEBS Letters, EarlyView.At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley +1 more source
FAST PULSE-AMPLITUDE DISCRIMINATORS [PDF]
, 1961 A review of the state-of-the-art concerning these descriminators is presented. It is noted that such devices are useful in nuclear counting to separate signals of greater amplitude from a background of unwanted noise signals or those of lesser amplitude.
openaire +3 more sources
Presynaptic facilitation at the crayfish neuromuscular junction: Role of calcium-activated potassium conductance [PDF]
, 1991 Membrane potential was recorded intracellularly near presynaptic terminals of the excitor axon of the crayfish opener neuromuscular junction (NMJ), while transmitter release was recorded postsynaptically.
Bittner, George D. +2 more
core +1 more source
Time after time – circadian clocks through the lens of oscillator theory
FEBS Letters, EarlyView.Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo +2 more
wiley +1 more source
Ultrafast single-shot amplitude swing pulse measurement
JPhys PhotonicsSingle-shot characterization techniques are crucial when handling shot-to-shot pulse-shape fluctuations (e.g. unstable laser systems, with high-power, or low repetition rate) because scanning configurations cannot measure single pulses.
Cristian Barbero +2 more
doaj +1 more source