Effect of Temperature Gradients on the Wave Aberration in Athermal Optical Glasses

1975 ◽  
Vol 14 (3) ◽  
pp. 716 ◽  
Author(s):  
F. Reitmayer ◽  
H. Schroeder
Keyword(s):  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Optical Glasses ◽  
Wave Aberration

Effect of Temperature Gradients on Anammox Activity- A Genome Wide Approach

2018 ◽  
Vol 2018 (7) ◽  
pp. 5219-5228
Author(s):  
Ananda Shankar Bhattacharjee ◽  
Sha Wu ◽  
Ramesh Goel
Keyword(s):  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Genome Wide ◽  
A Genome ◽  
Anammox Activity

scholarly journals Effect of temperature gradients in (reverse) electrodialysis in the Ohmic regime

2018 ◽  
Vol 548 ◽  
pp. 421-428 ◽  
Author(s):  
Anne M. Benneker ◽  
Timon Rijnaarts ◽  
Rob G.H. Lammertink ◽  
Jeffery A. Wood
Keyword(s):  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Reverse Electrodialysis

scholarly journals Cardiac Spiral Wave Drifting Due to Spatial Temperature Gradients – a Numerical Study

2018 ◽  
Author(s):  
Guy Malki ◽  
Sharon Zlochiver
Keyword(s):  
Numerical Simulations ◽  
Single Cell ◽  
Numerical Study ◽  
Spiral Wave ◽  
Spiral Waves ◽  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Local Perturbation ◽  
Marginal Effect ◽  
Spatial Temperature

ABSTRACTCardiac rotors are believed to be a major driver source of persistent atrial fibrillation (AF), and their spatiotemporal characterization is essential for successful ablation procedures. However, electrograms guided ablation have not been proven to have benefit over empirical ablation thus far, and there is a strong need of improving the localization of cardiac arrhythmogenic targets for ablation. A new approach for characterize rotors is proposed that is based on induced spatial temperature gradients (STGs), and investigated by theoretical study using numerical simulations. We hypothesize that such gradients will cause rotor drifting due to induced spatial heterogeneity in excitability, so that rotors could be driven towards the ablating probe. Numerical simulations were conducted in single cell and 2D atrial models using AF remodeled kinetics. STGs were applied either linearly on the entire tissue or as a small local perturbation, and the major ion channel rate constants were adjusted following Arrhenius equation. In the AF-remodeled single cell, recovery time increased exponentially with decreasing temperatures, despite the marginal effect of temperature on the action potential duration. In 2D models, spiral waves drifted with drifting velocity components affected by both temperature gradient direction and the spiral wave rotation direction. Overall, spiral waves drifted towards the colder tissue region associated with global minimum of excitability. A local perturbation with a temperature of T=28°C was found optimal for spiral wave attraction for the studied conditions. This work provides a preliminary proof-of-concept for a potential prospective technique for rotor attraction. We envision that the insights from this study will be utilize in the future in the design of a new methodology for AF characterization and termination during ablation procedures.

Effect of Temperature Gradients on the Frost Heave of a Saturated Silty Clay with a Water Supply

2017 ◽  
Vol 31 (4) ◽  
pp. 04017011 ◽  
Author(s):  
Mingyi Zhang ◽  
Xiyin Zhang ◽  
Shuangyang Li ◽  
Jianguo Lu ◽  
Wansheng Pei
Keyword(s):  
Water Supply ◽  
Temperature Gradients ◽  
Frost Heave ◽  
Effect Of Temperature ◽  
Silty Clay

scholarly journals The Effect of Temperature Gradients on Stress Development during Cryopreservation via Vitrification

2007 ◽  
Vol 5 (2) ◽  
pp. 104-115 ◽  
Author(s):  
Paul S. Steif ◽  
Matthew C. Palastro ◽  
Yoed Rabin
Keyword(s):  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Stress Development

Thermally Induced Migration of Hydrocarbon Oil

1977 ◽  
Vol 99 (2) ◽  
pp. 158-162 ◽  
Author(s):  
A. A. Fote ◽  
R. A. Slade ◽  
S. Feuerstein
Keyword(s):  
Thin Films ◽  
Mathematical Models ◽  
Temperature Gradients ◽  
Effect Of Temperature ◽  
Metal Substrates ◽  
Thermally Induced ◽  
Surface Finishes ◽  
Mechanical Assemblies ◽  
Surface Migration ◽  
Hydrocarbon Oil

An investigation of the surface migration of thin films of hydrocarbon oil on metal substrates has been undertaken to determine the effect of temperature gradients on the distribution of lubricants in spacecraft mechanical assemblies. The results of experiments performed in air were discussed earlier. We now discuss the results of experiments performed under vacuum. The important role played by surface finishes is demonstrated. Mathematical models of these results are developed.

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