scholarly journals LCA and economic study on the local oxygen supply in Central Europe during the COVID-19 pandemic

2021 ◽  
pp. 147401
Author(s):  
Mieczysław Bałys ◽  
Ewelina Brodawka ◽  
Anna Korzeniewska ◽  
Jakub Szczurowski ◽  
Katarzyna Zarębska
Keyword(s):  
Central Europe ◽  
Oxygen Supply ◽  
Economic Study ◽  
Local Oxygen

scholarly journals Cerebral Ischemia and Reperfusion Increases the Heterogeneity of Local Oxygen Supply/Consumption Balance

Stroke ◽  
2013 ◽  
Vol 44 (9) ◽  
pp. 2553-2558 ◽  
Author(s):  
Harvey R. Weiss ◽  
Jeremy Grayson ◽  
Xia Liu ◽  
Sylviana Barsoum ◽  
Harsh Shah ◽  
...  
Keyword(s):  
Cerebral Ischemia ◽  
Oxygen Supply ◽  
Ischemia And Reperfusion ◽  
Cerebral Ischemia And Reperfusion ◽  
Local Oxygen

scholarly journals Local oxygen supply and blood flow regulation in contracting muscle in dogs and rabbits.

1990 ◽  
Vol 422 (1) ◽  
pp. 227-243 ◽  
Author(s):  
D K Harrison ◽  
S Birkenhake ◽  
S K Knauf ◽  
M Kessler
Keyword(s):  
Blood Flow ◽  
Oxygen Supply ◽  
Flow Regulation ◽  
Contracting Muscle ◽  
Blood Flow Regulation ◽  
Local Oxygen

Oxygen Supply of Middle Ear Mucosa under Normal Conditions and after Eustachian Tube Occlusion

1980 ◽  
Vol 89 (3_suppl) ◽  
pp. 76-78 ◽  
Author(s):  
C. Morgenstern
Keyword(s):  
Middle Ear ◽  
Negative Pressure ◽  
Oxygen Supply ◽  
Diffusion Flux ◽  
Tympanic Cavity ◽  
Middle Ear Mucosa ◽  
Physiological Conditions ◽  
Air Space ◽  
Negative Pressures ◽  
Local Oxygen

The mucosa of the middle ear is not only supplied with oxygen from the blood but also from the air space of the middle ear. Under physiological conditions, the perilymph is supplied partially with oxygen from the tympanic cavity. When the Po2 in the middle ear falls below 57 mm Hg, a net diffusion flux of oxygen from the perilymph to the middle ear induces a loss of oxygen from the inner ear. A negative pressure of 25 mm Hg generated in the middle ear, causes a transudate. Subsequently, slight disturbances of microcirculation should occur in the mucosal membrane. More pronounced negative pressures lead to very distinct disturbances of microcirculation and local oxygen supply.

Erlanger microlightguide photometer: a new way of monitoring local oxygen supply of tissue

1996 ◽  
Author(s):  
Jens Adler ◽  
Stefan Kuchenruether ◽  
W. Doblanzki ◽  
M. Georgieff
Keyword(s):  
Oxygen Supply ◽  
Local Oxygen

scholarly journals Cellular Nutrition in Complex Three-Dimensional Scaffolds: A Comparison between Experiments and Computer Simulations

2015 ◽  
Vol 2015 ◽  
pp. 1-12 ◽  
Author(s):  
Claudia Bergemann ◽  
Patrick Elter ◽  
Regina Lange ◽  
Volker Weißmann ◽  
Harald Hansmann ◽  
...  
Keyword(s):  
Shear Stress ◽  
Cell Viability ◽  
Computer Simulations ◽  
Flow Rate ◽  
Oxygen Supply ◽  
Three Dimensional ◽  
Flow Rates ◽  
The Core ◽  
Local Oxygen

Studies on bone cell ingrowth into synthetic, porous three-dimensional (3D) implants showed difficulties arising from impaired cellular proliferation and differentiation in the core region of these scaffolds with increasing scaffold volumein vitro. Therefore, we developed anin vitroperfusion cell culture module, which allows the analysis of cells in the interior of scaffolds under different medium flow rates. For each flow rate the cell viability was measured and compared with results from computer simulations that predict the local oxygen supply and shear stress inside the scaffold based on the finite element method. We found that the local cell viability correlates with the local oxygen concentration and the local shear stress. On the one hand the oxygen supply of the cells in the core becomes optimal with a higher perfusion flow. On the other hand shear stress caused by high flow rates impedes cell vitality, especially at the surface of the scaffold. Our results demonstrate that both parameters must be considered to derive an optimal nutrient flow rate.

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