A multipole formalism for describing radiative pulse evolution in degenerate transitions of gaseous media

1982 ◽  
Vol 14 (3) ◽  
pp. 201-215
Author(s):  
C. Feuillade
Keyword(s):  
Gaseous Media

The Role of Saline Aerosols in the Prevention and Therapy of Cardio-respiratory and Osteo-muscular Afflictions

2018 ◽  
Vol 69 (10) ◽  
pp. 2826-2832
Author(s):  
Ioan Gabriel Sandu ◽  
Viorica Vasilache ◽  
Andrei Victor Sandu ◽  
Marin Chirazi ◽  
Cezar Honceriu ◽  
...  
Keyword(s):  
Athletic Performance ◽  
Gaseous Medium ◽  
Human Subjects ◽  
Active Surface ◽  
Positive Influence ◽  
Climatic Parameters ◽  
Gaussian Distributions ◽  
Gaseous Media ◽  
Source Number

The saline aerosols generated in gaseous media, as nanodispersions, behave, with respect to the concentration levels and the lifespan, as trimodal distributions (the three domains with Gaussian distributions: fine or Aitken under 50 �m, medium between 50 and 500 mm and, respectively, coarse or large between 500 and 1000 mm). The generation in latent state is dependent on the active surface of the source (number of generator centres, the size and position of the fluorescences, the porosity, size and shape of the source, etc.), the climatic parameters, but also on a series of other characteristics of the gaseous medium. Our team has demonstrated experimentally that saline aerosols, NaCl type, besides the ability to prevent and treat broncho-respiratory and cardiac conditions, through coassistance of saline aerosols of other cations than sodium, and of the iodine anion, have for certain levels of concentrations propitious effects over the immune, bone and muscular systems. Similarly proved has been the positive influence on the development of children, as well the determinant role in increasing athletic performance and of other human subjects performing intense activities.

Acoustic Emission Monitoring of Leaks in Pipes for Transport of Liquid and Gaseous Media: A Model Experiment

2006 ◽  
Vol 13-14 ◽  
pp. 351-356 ◽  
Author(s):  
Andreas J. Brunner ◽  
Michel Barbezat
Keyword(s):  
Acoustic Emission ◽  
Model Experiment ◽  
Structural Integrity ◽  
Fiber Composite ◽  
Leak Testing ◽  
Pipe Segment ◽  
Potential Applications ◽  
Gaseous Media ◽  
The Media ◽  
Ae Signals

In order to explore potential applications for Active Fiber Composite (AFC) elements made from piezoelectric fibers for structural integrity monitoring, a model experiment for leak testing on pipe segments has been designed. A pipe segment made of aluminum with a diameter of 60 mm has been operated with gaseous (compressed air) and liquid media (water) for a range of operating pressures (between about 5 and 8 bar). Artificial leaks of various sizes (diameter) have been introduced. In the preliminary experiments presented here, commercial Acoustic Emission (AE) sensors have been used instead of the AFC elements. AE sensors mounted on waveguides in three different locations have monitored the flow of the media with and without leaks. AE signals and AE waveforms have been recorded and analysed for media flow with pressures ranging from about 5 to about 8 bar. The experiments to date show distinct differences in the FFT spectra depending on whether a leak is present or not.

Laser fluorescence complex for online iodine-129 and iodine-127 detection in gaseous media using a tunable diode laser

2014 ◽  
Vol 12 (1) ◽  
pp. 015701 ◽  
Author(s):  
S V Kireev ◽  
S L Shnyrev ◽  
I V Sobolevsky ◽  
A A Kondrashov
Keyword(s):  
Diode Laser ◽  
Laser Fluorescence ◽  
Tunable Diode Laser ◽  
Gaseous Media

Polarization techniques for use with excimer-laser-based imaging of gaseous media

1995 ◽  
Author(s):  
Erhard W. Rothe ◽  
Wolfgang Reckers ◽  
Youngwei Gu
Keyword(s):  
Excimer Laser ◽  
Gaseous Media

scholarly journals Lattice Boltzmann simulation of electromechanical resonators in gaseous media

2010 ◽  
Vol 652 ◽  
pp. 241-257 ◽  
Author(s):  
CARLOS E. COLOSQUI ◽  
DEVREZ M. KARABACAK ◽  
KAMIL L. EKINCI ◽  
VICTOR YAKHOT
Keyword(s):  
Lattice Boltzmann ◽  
Entire Range ◽  
Numerical Data ◽  
Viscoelastic Flow ◽  
Frequency Variation ◽  
Fluid Resistance ◽  
Gas Viscosity ◽  
Lattice Boltzmann Simulation ◽  
Experimental Parameters ◽  
Gaseous Media

In this work, we employ a kinetic-theory-based approach to predict the hydrodynamic forces on electromechanical resonators operating in gaseous media. Using the Boltzmann–BGK equation, we investigate the influence of the resonator geometry on the fluid resistance in the entire range of non-dimensional frequency variation 0 ≤ τω ≤ ∞; here the fluid relaxation time τ = μ/p is determined by the gas viscosity μ and pressure p at thermodynamic equilibrium, and ω is the (angular) oscillation frequency. Our results here capture two important aspects of recent experimental measurements that covered a broad range of experimental parameters. First, the experimentally observed transition from viscous to viscoelastic flow in simple gases at τω ≈ 1 emerges naturally in the numerical data. Second, the calculated effects of resonator geometry are in agreement with experimental observations.

MRV-1M multiposition unit for testing polymer materials in vacuo and in gaseous media

1976 ◽  
Vol 8 (11) ◽  
pp. 1362-1365
Author(s):  
K. Sh. Bocharov ◽  
Yu. S. Stroilov ◽  
V. F. Udovenko ◽  
M. V. Zinov'ev ◽  
V. I. Momot
Keyword(s):  
Polymer Materials ◽  
Gaseous Media ◽  
Testing Polymer
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