scholarly journals The simultaneous discharge of liquid and grains from a silo

2018 ◽  
Vol 30 (4) ◽  
pp. 043302 ◽  
Author(s):  
A. M. Cervantes-Álvarez ◽  
S. Hidalgo-Caballero ◽  
F. Pacheco-Vázquez
Keyword(s):  
Simultaneous Discharge

Single Wound Produced by Simultaneous Discharge of Both Shells from a Double-Barrel Shotgun

1990 ◽  
Vol 35 (2) ◽  
pp. 12849J ◽  
Author(s):  
Michael G. Medich ◽  
Stephen D. Cohle ◽  
Mike Burritt ◽  
Paul Davison
Keyword(s):  
Simultaneous Discharge

scholarly journals Make it two: A case report of dual sequential external defibrillation

CJEM ◽  
2017 ◽  
Vol 20 (5) ◽  
pp. 792-797 ◽  
Author(s):  
Colin R. Bell ◽  
Adam Szulewski ◽  
Steven C. Brooks
Keyword(s):  
Emergency Department ◽  
Cardiac Arrest ◽  
Case Report ◽  
Ventricular Fibrillation ◽  
Hospital Discharge ◽  
Mechanisms Of Action ◽  
Prehospital Setting ◽  
Simultaneous Discharge ◽  
Neurologically Intact ◽  
Hospital Cardiac Arrest

ABSTRACTDual sequential external defibrillation (DSED) is the process of near simultaneous discharge of two defibrillators with differing pad placement to terminate refractory arrhythmias. Previously used in the electrophysiology suite, this technique has recently been used in the emergency department and prehospital setting for out-of-hospital cardiac arrest (OHCA). We present a case of successful DSED in the emergency department with neurologically intact survival to hospital discharge after refractory ventricular fibrillation (RVF) and review the putative mechanisms of action of this technique.

Experimental investigation of the heat-exchange crisis caused by simultaneous discharge and thermal load reduction

1988 ◽  
Vol 65 (3) ◽  
pp. 729-733 ◽  
Author(s):  
A. S. Komendantov ◽  
Yu. A. Kuzma-Kichta ◽  
S. V. Dudkin ◽  
N. A. Burdunina
Keyword(s):  
Experimental Investigation ◽  
Heat Exchange ◽  
Thermal Load ◽  
Load Reduction ◽  
Simultaneous Discharge

Proton- and ion-transfer reactions

1996 ◽  
Author(s):  
Wolfgang Schmickler
Keyword(s):  
Electron Transfer ◽  
Electrode Surface ◽  
Metal Ion ◽  
Metal Electrode ◽  
Transfer Reactions ◽  
Partial Charge ◽  
Reverse Process ◽  
Proton Transfer Reactions ◽  
Solvent Molecules ◽  
Simultaneous Discharge

We consider the transfer of an ion or proton from the solution to the surface of a metal electrode; often this is accompanied by a simultaneous discharge of the transferring particle, such as by a fast electron transfer. The particle on the surface may be an adsorbate as in the reaction: . . .Cl - (sol) ⇋ Clad + e- (metal) . . . (9.1) In this case the discharge can be partial; that is, the adsorbate can carry a partial charge, as discussed in Chapter 4. Alternatively the particle can be incorporated into the electrode as in the deposition of a metal ion on an electrode of the same composition, or in the formation of an alloy. An example of the latter is the formation of an amalgam such as: . . . Zn2++2e- ⇋ Zn(Hg) . . . (9.2) The reverse process is the transfer of a particle from the electrode surface to the solution; often the particle on the surface is uncharged or partially charged, and is ionized during the transfer. Ion- and proton-transfer reactions are almost always preceded or followed by other reaction steps. We first consider only the chargetransfer step itself. Ions and protons are much heavier than electrons. While electrons can easily tunnel through layers of solution 5 to 10 Å thick, protons can tunnel only over short distances, up to about 0.5 Å, and ions do not tunnel at all at room temperature. The transfer of an ion from the solution to a metal surface can be viewed as the breaking up of the solvation cage and subsequent deposition, the reverse process as the jumping of an ion from the surface into a preformed favorable solvent configuration. In simple cases the transfer of an ion obeys a slightly modified form of the Butler-Volmer equation. Consider the transfer of an ion from the solution to the electrode. As the ion approaches the electrode surface, it loses a part of its solvation sphere, and it displaces solvent molecules from the surface; consequently its Gibbs energy increases at first.

Rapid baroreceptor resetting is unaltered by chronic hypertension in rats

1989 ◽  
Vol 256 (4) ◽  
pp. H1228-H1235 ◽  
Author(s):  
M. C. Andresen ◽  
M. Y. Yang
Keyword(s):  
Aortic Distensibility ◽  
Chronic Hypertension ◽  
Spontaneously Hypertensive ◽  
Pressure Threshold ◽  
Blood Pressures ◽  
Wistar Kyoto ◽  
Strain Threshold ◽  
Simultaneous Discharge

This study compares rapid baroreceptor resetting in spontaneously hypertensive rats (SHR) and normotensive Wistar-Kyoto rats (WKY). Single-fiber baroreceptor activity and aortic diameter were measured in in vitro preparations. Baroreceptor pressure threshold (Pth) and suprathreshold pressure sensitivity were measured during periods after various levels of conditioning mean arterial pressure (cMAP). The ability of a baroreceptor to reset was expressed as the resetting ratio (delta Pth/delta cMAP). Rapid resetting was successfully characterized in 30 baroreceptors (18 SHR and 12 WKY). SHR blood pressures were higher, and aortic distensibility was lower than in WKY. SHR baroreceptors showed signs of chronic resetting, i.e., elevated Pth (105.4 vs. 88.5 mmHg, SHR and WKY, respectively) and decreased suprathreshold sensitivity (0.92 vs. 1.42 spikes.s.-1.mmHg-1, SHR and WKY, respectively), but their resetting ratios were similar to WKY (0.260 and 0.237, SHR and WKY, respectively). Characterization of rapid resetting of more than one baroreceptor from single animals reveals that the resetting ratio can vary by greater than 50% within animals. During simultaneous discharge-diameter recordings, the strain threshold was better correlated to cMAP than Pth. We conclude that the ability of baroreceptors to rapidly reset is unaltered by chronic hypertension or chronic baroreceptor resetting, and we hypothesize that rapid resetting is probably a result of an intrinsic neural property rather than vessel mechanics.

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