Prof. Michael H. Engel Profile

Prof. Michael H. Engel

at Univ of Oklahoma

SPIE Involvement:

Author

Publications (19)

Proceedings Article | 11 September 2015 Paper

Possible effects of diagenesis on the stable isotope composition of amino acids in carbonaceous meteorites

Michael Engel

Proceedings Volume 9606, 96060J (2015) https://doi.org/10.1117/12.2186252

KEYWORDS: Crystals, Proteins, Carbon, Nitrogen, Solar system, Contamination, Organisms, Statistical analysis, Radiation effects, Crystallography

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Proceedings Article | 26 September 2013 Paper

Impact of prebiotic synthesis and diagenesis on the distribution, stereochemistry, and stable isotope composition of amino acids in carbonaceous meteorites

Michael Engel

Proceedings Volume 8865, 886505 (2013) https://doi.org/10.1117/12.2022753

KEYWORDS: Proteins, Contamination, Radiation effects, Carbon, Nitrogen, Minerals, Crystals, Microorganisms, Matrices, Solar system

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Proceedings Article | 15 October 2012 Paper

Origins of the L-amino acid excess in carbonaceous meteorites

Michael Engel

Proceedings Volume 8521, 852104 (2012) https://doi.org/10.1117/12.928526

KEYWORDS: Proteins, Crystals, Solar system, Planets, Molecules, Contamination, Liquid crystals, Geology, Geophysics, Comets

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Proceedings Article | 24 September 2011 Paper

Pre-biotic organic synthesis: laboratory simulation experiments and their significance for the origin of life in the solar system

Michael Engel

Proceedings Volume 8152, 815208 (2011) https://doi.org/10.1117/12.890456

KEYWORDS: Proteins, Earth's atmosphere, Solar system, Organisms, Ultraviolet radiation, Minerals, Molecules, Hydrogen, Methane, Carbon dioxide

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Proceedings Article | 7 September 2010 Paper

The distribution and stereochemistry of amino acids in rocks and sediments from harsh terrestrial environments: analogues for future studies of ancient extraterrestrial materials

Michael Engel, Debra Engel

Proceedings Volume 7819, 781906 (2010) https://doi.org/10.1117/12.859884

KEYWORDS: Proteins, Organisms, Solar system, Microorganisms, Contamination, Environmental sensing, Bacteria, Gallium, Water, Minerals

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Proceedings Article | 7 September 2010 Paper

Pathways for the asymmetric amplification of protein amino acids in the Murchison meteorite

Michael Engel, Stephen Macko

Proceedings Volume 7819, 781904 (2010) https://doi.org/10.1117/12.859716

KEYWORDS: Proteins, Crystals, Contamination, Organisms, Adsorption, Solar system, Minerals, Thermodynamics, Geology, Geophysics

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Proceedings Article | 4 September 2009 Paper

Partial racemization of amino acids in meteorites: implications for their possible modes of origin

Michael Engel

Proceedings Volume 7441, 744105 (2009) https://doi.org/10.1117/12.824879

KEYWORDS: Proteins, Organisms, Contamination, Solar system, Molecules, Geology, Geophysics, Curium, Astrobiology, Current controlled current source

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Proceedings Article | 28 August 2008 Paper

The origins of amino acids in ancient terrestrial and extraterrestrial materials

Michael Engel, Randall Perry

Proceedings Volume 7097, 709705 (2008) https://doi.org/10.1117/12.793266

KEYWORDS: Proteins, Contamination, Solar system, Mars, Organisms, Statistical analysis, Planets, Carbon, Crystals, Minerals

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Proceedings Article | 28 August 2008 Paper

Biomarker indicators of bacterial activity and organic fluxes during end Triassic mass extinction event

Dan Jiao, Randall Perry, Mike Engel, Mark Sephton

Proceedings Volume 7097, 709709 (2008) https://doi.org/10.1117/12.796160

KEYWORDS: Oceanography, Ions, Bacteria, Biological research, Carbon, Microorganisms, Chromatography, Sensors, Spectroscopy, Ecosystems

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Proceedings Article | 28 August 2008 Paper

Inferring climate change from stable isotope compositions of ancient speleothems on Earth: possible implications for climatic reconstructions elsewhere in the solar system

Brian Harms, R. Douglas Elmore, Michael Engel

Proceedings Volume 7097, 70970B (2008) https://doi.org/10.1117/12.792852

KEYWORDS: Climatology, Climate change, Carbon dioxide, Carbonates, Oxygen, Carbon, Calcite, Solar system, Temperature metrology, Oceanography

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Proceedings Article | 1 October 2007 Paper

Stable sulfur isotopes as probes for ancient life in the solar system

Michael Engel

Proceedings Volume 6694, 66940B (2007) https://doi.org/10.1117/12.731688

KEYWORDS: Sulfur, Solar system, Minerals, Oceanography, Carbon, Proteins, Earth's atmosphere, Carbonates, Nitrogen, Organisms

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Proceedings Article | 14 September 2006 Paper

Carbon isotopic gradients in the Martian crust: implications for past or present life on Mars

Mark Sephton, Stephen Self, Alexander Verchovsky, Monica Grady, Randall Perry, Michael Engel, Ian Wright

Proceedings Volume 6309, 63090G (2006) https://doi.org/10.1117/12.698394

KEYWORDS: Carbon, Mars, Crystals, Combustion, Resonance energy transfer, Natural surfaces, Contamination, Planets, Molecules, Mass spectrometry

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Proceedings Article | 14 September 2006 Paper

Amino acids as probes for ancient life in the solar system

Michael Engel, Randall Perry

Proceedings Volume 6309, 630907 (2006) https://doi.org/10.1117/12.678793

KEYWORDS: Proteins, Solar system, Organisms, Carbon, Sulfur, Gallium, Nitrogen, Planetary science, Earth's atmosphere, Atmospheric sciences

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Proceedings Article | 22 September 2005 Paper

Establishing criteria to assess the possible origin(s) of life elsewhere in our solar system

Michael Engel, Stephen Macko

Proceedings Volume 5906, 59060Q (2005) https://doi.org/10.1117/12.614490

KEYWORDS: Proteins, Solar system, Carbon, Gallium, Mars, Organisms, Neodymium, Contamination, Chemical elements, Statistical analysis

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Proceedings Article | 22 September 2005 Paper

How desert varnish forms?

Randall Perry, Vera Kolb, Bridget Lynne, Mark Sephton, Nicola Mcloughlin, Michael Engel, Lorraine Olendzenski, Martin Brasier, James Staley

Proceedings Volume 5906, 59060V (2005) https://doi.org/10.1117/12.626547

KEYWORDS: Coating, Silica, Manganese, Oxides, Thin film coatings, Silicon, Iron, Scanning electron microscopy, Minerals, Aluminum

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Proceedings Article | 1 November 2004 Paper

Carbonaceous meteorites: source or substrate for life's origin on Earth?

Michael Engel

Proceedings Volume 5555, (2004) https://doi.org/10.1117/12.566495

KEYWORDS: Proteins, Organisms, Solar system, Curium, Planets, Comets, Gallium, Molecules, Mars, Chemical analysis

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Proceedings Article | 10 February 2004 Paper

Amino acids in carbonaceous meteorites: biotic or abiotic?

Michael Engel, Vlad Andrus, Stephen Macko

Proceedings Volume 5163, (2004) https://doi.org/10.1117/12.504222

KEYWORDS: Proteins, Organisms, Solar system, Contamination, Carbon, Nitrogen, Gallium, Neodymium, Geophysics, Planets

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Proceedings Article | 6 July 1998 Paper

Stable isotopes as probes of terrestrial and extraterrestrial biotic and abiotic synthesis of organic matter

Michael Engel, Stephen Macko

Proceedings Volume 3441, (1998) https://doi.org/10.1117/12.319838

KEYWORDS: Carbon, Nitrogen, Chemical elements, Organisms, Contamination, Solar system, Biopolymers, Earth's atmosphere, Chemical reactions, Statistical analysis

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Proceedings Article | 11 July 1997 Paper

Stable isotope analysis of amino acid enantiomers in the Murchison meteorite at natural abundance levels

Michael Engel, Stephen Macko

Proceedings Volume 3111, (1997) https://doi.org/10.1117/12.278813

KEYWORDS: Nitrogen, Carbon, Spectroscopy, Carbon monoxide, Optical activity, Curium, Proteins, Analytical research, Geophysics, Logic

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Showing 5 of 19 publications

Conference Committee Involvement (13)

Instruments, Methods, and Missions for Astrobiology XVII

9 August 2015 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology XVI

27 August 2013 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology XV

14 August 2012 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology XIV

23 August 2011 | San Diego, California, United States

Instruments, Methods, and Missions for Astrobiology XIII

3 August 2010 | San Diego, California, United States

Showing 5 of 13 Conference Committees

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