A chemo-poro-mechanical model for sequestration of carbon dioxide in coalbeds

A mechanical lung model was used to investigate the effect of varying carbon dioxide production and deadspace on the end-tidal carbon dioxide levels achieved during mechanical ventilation when using the Bain, Humphrey ADE, and circle systems. Both factors had significant influence on end-tidal cardon dioxide concentration and could result in values in excess of those considered acceptable in clinical practice. The implications of the results are discussed.

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Mechanical model of carbon dioxide vibrational spectrum

Technical Physics ◽

10.1134/s1063784216120033 ◽

2016 ◽

Vol 61 (12) ◽

pp. 1789-1796

Author(s):

G. T. Aldoshin ◽

S. P. Yakovlev

Keyword(s):

Carbon Dioxide ◽

Vibrational Spectrum ◽

Mechanical Model

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A chemo-poro-mechanical model for sequestration of carbon dioxide in coalbeds

Bio- and Chemo-Mechanical Processes in Geotechnical Engineering ◽

10.1680/bcmpge.60531.007 ◽

2014 ◽

pp. 81-89

Author(s):

M. S. MASOUDIAN ◽

D. W. AIREY ◽

A. EL-ZEIN

Keyword(s):

Carbon Dioxide ◽

Mechanical Model

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Effects of the Presence of CO2 at the Well/Caprock Interface: Crystallization Damage

Volume 6: Polar and Arctic Sciences and Technology; Offshore Geotechnics; Petroleum Technology Symposium ◽

10.1115/omae2013-11543 ◽

2013 ◽

Author(s):

Diego Manzanal ◽

Jean-Michel Pereira

Keyword(s):

Carbon Dioxide ◽

Mechanical Model ◽

Geological Storage ◽

Co2 Leakage ◽

Co2 Geological Storage ◽

Calcium Carbonates ◽

Damaged Zone ◽

Stress States ◽

Well Cement ◽

Insight Into

In the context of CO2 geological storage, it is important to assess the safety and efficiency of the storage operation and thus to prevent CO2 leakage. Most probable leakage paths are constituted by the natural (faults) or artificial (around wells) interfaces. In this study, the effects of the presence of carbon dioxide on the behaviour of a particular interface are considered. A chemo-poro-mechanical model for the excavated damaged zone located at the interface between the injection well cement and the caprock has been developed. This constitutive model accounts for the precipitation of calcium carbonates coming from the carbonation of the well cement. Crystallisation pressure induced by these carbonates modifies the stress state in the materials at the interface. The model couples a simplified chemistry of carbonates precipitation with a poro-mechanical model accounting for damage of geomaterials due to tensile stress states. This poro-mechanical model is developed at the macroscale but an insight into the material’s microstructure is also included through a description of the material’s pore size distribution and its evolution with crystallisation and damage.

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Electron Cytochemical Study of Carbon Dioxide Laser Effect on Rhesus Monkey Cornea

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010005113x ◽

1974 ◽

Vol 32 ◽

pp. 224-225

Author(s):

K. C. Tsou ◽

J. Morris ◽

P. Shawaluk ◽

B. Stuck ◽

E. Beatrice

Keyword(s):

Carbon Dioxide ◽

Electron Microscope ◽

Rhesus Monkey ◽

Carbon Dioxide Laser ◽

Cytochemical Study ◽

Laser Effect

While much is known regarding the effect of lasers on the retina, little study has been done on the effect of lasers on cornea, because of the limitation of the size of the material. Using a combination of electron microscope and several newly developed cytochemical methods, the effect of laser can now be studied on eye for the purpose of correlating functional and morphological damage. The present paper illustrates such study with CO2 laser on Rhesus monkey.

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The Critical Point Drying Method Applied to Scanning Electron Microscopy of L-929 Cells

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100068382 ◽

1970 ◽

Vol 28 ◽

pp. 278-279

Author(s):

Charles TurnbiLL ◽

Delbert E. Philpott

Keyword(s):

Electron Microscopy ◽

Carbon Dioxide ◽

Surface Tension ◽

Critical Point ◽

Freeze Drying ◽

Attractive Alternative ◽

Crystal Formation ◽

Critical Point Drying ◽

Time Required ◽

Scanning Electron

The advent of the scanning electron microscope (SCEM) has renewed interest in preparing specimens by avoiding the forces of surface tension. The present method of freeze drying by Boyde and Barger (1969) and Small and Marszalek (1969) does prevent surface tension but ice crystal formation and time required for pumping out the specimen to dryness has discouraged us. We believe an attractive alternative to freeze drying is the critical point method originated by Anderson (1951; for electron microscopy. He avoided surface tension effects during drying by first exchanging the specimen water with alcohol, amy L acetate and then with carbon dioxide. He then selected a specific temperature (36.5°C) and pressure (72 Atm.) at which carbon dioxide would pass from the liquid to the gaseous phase without the effect of surface tension This combination of temperature and, pressure is known as the "critical point" of the Liquid.

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