نتایج جستجو برای: pulse events

تعداد نتایج: 408654  

In this paper, the propagation of a Gaussian and femtosecond laser pulse through a plasma channel is considered and the amount of induced chirp, as well as it’s type, on laser pulse frequency has been investigated. The group velocity dispersion (GVD) and relativistic effects has been taken into account in propagation equations. It is concluded that the relativistic effect induces positive chirp...

2010
Jean-Paul Janssens Jean-Christian Borel Jean-Louis Pépin

Complex respiratory events, which may have a detrimental effect on both quality of sleep and control of nocturnal hypoventilation, occur during sleep in patients treated with non-invasive ventilation (NIV). Among these events are patient-ventilator asynchrony, increases in upper airway resistance (with or without increased respiratory drive) and leaks. Detection of these events is important in ...

2010
Gary F. Mitchell

TOWNSEND LETTER – MAY 2010 This article explores an exciting, noninvasive, easy-to-use, and economical method of assessing patients’ cardiovascular physiologic status that is backed by more than 25 years of advanced research in medical physics. A 2007 Clinical Medicine article points the way to better clinical treatment of CVD, stating: “Arterial stiffness measured by pulse wave velocity (PWV) ...

Journal: :Earth, Planets and Space 2021

Abstract We performed zircon U–Pb dating on the Pliocene Tanigawa-dake granites (Makihata and Tanigawa bodies) Cretaceous Minakami quartzdiorite, Northeast Japan Arc. Concordia ages were estimated to be 3.95 ± 0.11 Ma (± 2 sigma) for Makihata body, 3.18 0.13 3.32 0.15 109.4 2.2 quartzdiorite. The quartzdiorite is possibly correlated bedrock in Ashio belt because age of consistent with earliest ...

Journal: :Nuclear Instruments and Methods in Physics Research 2023

The scintillation mechanism in NaI:Tl crystals produces different pulse shapes that are dependent on the incoming particle type. time distribution of light from nuclear recoil events decays faster than for electron and this difference can be categorised using various Pulse Shape Discrimination (PSD) techniques. In study, we measured recoils a crystal, with equivalent energies between 2 40 keV. ...

جمشیدی, مینا, حکیمی‌پژوه, حسین, درویش‌ملا, سحر, روحانی, محمودرضا, چابک‌سوار, مرجان,

One of the interesting Laser-Plasma phenomena, when the laser power is high and ultra intense, is the generation of large amplitude plasma waves (Wakefield) and electron acceleration. An intense electromagnetic laser pulse can create plasma oscillations through the action of the nonlinear pondermotive force. electrons trapped in the wake can be accelerated to high energies, more than 1 TW. Of t...

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