نتایج جستجو برای: temperature pulse

تعداد نتایج: 537086  

2005
Zhaoming Zhu Daniel J. Gauthier Alexander L. Gaeta Robert W. Boyd Alan E. Willner

We study numerically all-optical slow-light delays in room-temperature single-mode optical fibers induced by stimulated Brillouin scattering. We consider the propagation of a pulse through a cw-pumped Brillouin fiber amplifier, where the carrier frequency of the pulse is tuned near the Stokes resonance. Pulse delay and broadening of the Stokes pulse are studied in the small-signal and gain-satu...

A highly sensitive differential pulse polarographic (DPP) method has been developed for the determination of trace amounts of osmium, based on the catalytic effect of osmium (VIII) on the oxidation of pyrogallol red (PGR) by sodium bromate at pH 7.00 and 25.0 0.1 ? C. The reaction rate was monitored by measuring the differential pulse cathodic current of the oxidation product of PGR and broma...

Borzou , Seyed Reza, Farghadani , Fateme, Gholyaf , Mahmood, Mahjub , Hosein, Oshvandi , Khodayar,

Abstract Introduction: Cool dialysate solution is an important factor in maintenance of cardio–vascular stability in hemodialysis patients. Objective: This study aimed to determine the effect of dialysate temperature on vital signs, comfort and adequacy of dialysis in hemodialysis patients. Methods: This study is a clinical trial conducted on 30 hemodialysis patients hospitalized in hemod...

Journal: :Optics express 2015
Xiaojun Wu Chun Zhou Wenqian Ronny Huang Frederike Ahr Franz X Kärtner

Optical rectification with tilted pulse fronts in lithium niobate crystals is one of the most promising methods to generate terahertz (THz) radiation. In order to achieve higher optical-to-THz energy efficiency, it is necessary to cryogenically cool the crystal not only to decrease the linear phonon absorption for the generated THz wave but also to lengthen the effective interaction length betw...

2016
A. Deville C. Blanchard A. Landi

2014 In the insulating spin-glass material EU0.4Sr0.6S, the transient E.S.R. absorption following a strong r.f. pulse has been studied at X band for T ~ Tg. The signal was found to depend strongly upon the experimental conditions (energy of the r.f. pulse, value of the driving magnetic field). At 4.2 K and with a weak perturbing r.f. energy (1 03BCJ), the recovery was exponential (03C4 ~ 40 ms)...

Journal: :Journal of applied physiology 1998
S R Kayar E C Parker E O Aukhert

Diving is known to induce a change in the amplitude of the T wave (ATw) of electrocardiograms, but it is unknown whether this is linked to a change in cardiovascular performance. We analyzed ATw in guinea pigs at 10-60 atm and 25-36 degreesC, breathing 2% O2 in either helium (heliox; n = 10) or hydrogen (hydrox; n = 9) for 1 h at each pressure. Core temperature and electrocardiograms were detec...

Journal: :Bioelectrochemistry 2002
Gregory T Martin Uwe F Pliquett James C Weaver

Electroporation, the increase in the permeability of bilayer lipid membranes by the application of high voltage pulses, has the potential to serve as a mechanism for transdermal drug delivery. However, the associated current flow through the skin will increase the skin temperature and might affect nearby epidermal cells, lipid structure or even transported therapeutic molecules. Here, thermal c...

2012
C Vitelaru Daniel Lundin G D Stancu D Lundin N Brenning J Bretagne T Minea

Time resolved Tunable Diode-Laser Absorption Spectroscopy (TD-LAS) measurements were performed on the argon metastable (Ar) level 3s3p(P°3/2)4s excited at 801.478 nm, in the dense plasma region in front of the magnetron target in a high power impulse magnetron sputtering (HiPIMS) discharge. From the Doppler profile the evolution of the temperature and density were derived during the pulse as we...

2007
N Balcon A Aanesland R Boswell

The properties of a pulsed radio frequency capacitive discharge are investigated at atmospheric pressure in argon. The discharge can operate in two different modes: a homogeneous glow discharge or turn into filaments. By pulsing the 13.56 MHz generator both the filamentary and the glow modes can be selected depending on the pulse width and period. For a 5μs pulse width (∼70 RF cycles in the pul...

2017
Stijn J J Schreven Enric Frago Annemiek Stens Peter W de Jong Joop J A van Loon

Under predicted global climate change, species will be gradually exposed to warmer temperatures, and to a more variable climate including more intense and more frequent heatwaves. Increased climatic variability is expected to have different effects on species and ecosystems than gradual warming. A key challenge to predict the impact of climate change is to understand how temperature changes wil...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید