Search Results - "Wolfram H.-P. Thiemann"

Urea, glycolic acid, and glycerol in an organic residue produced by ultraviolet irradiation of interstellar/pre-cometary ice analogs by Nuevo, Michel, Bredehöft, Jan Hendrik, Meierhenrich, Uwe J, d'Hendecourt, Louis, Thiemann, Wolfram H-P

“…More than 50 stable organic molecules have been detected in the interstellar medium (ISM), from ground-based and onboard-satellite astronomical observations,…”
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Identification of Diamino Acids in the Murchison Meteorite by Meierhenrich, Uwe J., Guillermo M. Muñoz Caro, Bredehöft, Jan Hendrik, Jessberger, Elmar K., Wolfram H.-P. Thiemann, van Dishoeck, Ewine F.

“…Amino acids identified in the Murchison chondritic meteorite by molecular and isotopic analysis are thought to have been delivered to the early Earth by…”
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Photochirogenesis: Photochemical Models on the Origin of Biomolecular Homochirality by Meinert, Cornelia, Filippi, Jean-Jacques, Nahon, Laurent, Hoffmann, Søren V., D’Hendecourt, Louis, De Marcellus, Pierre, Bredehöft, Jan Hendrik, Thiemann, Wolfram H.-P., Meierhenrich, Uwe J.

“…Current research focuses on a better understanding of the origin of biomolecular asymmetry by the identification and detection of the possibly first chiral…”
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Chiroptical properties of diamino carboxylic acids by Bredehöft, Jan Hendrik, Breme, Katharina, Meierhenrich, Uwe J., Hoffmann, Søren V., Thiemann, Wolfram H.-P.

“…Diamino carboxylic acids have recently come to the attention of scientists working in the field of early life and its development. These are the monomers of a…”
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ESA mission ROSETTA will probe for chirality of cometary amino acids by Thiemann, W H, Meierhenrich, U

“…New crucial theoretical investigations on the origin of biomolecular chirality are reviewed briefly. With the goal to investigate these theories our team is…”
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Non-racemic amino acid production by ultraviolet irradiation of achiral interstellar ice analogs with circularly polarized light: Comment on “Photochirogenesis: Photochemical models on the absolute asymmetric formation of amino acids in interstellar space” by Uwe J. Meierhenrich et al by Thiemann, Wolfram H.-P.

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Precursors of Biological Cofactors from Ultraviolet Irradiation of Circumstellar/Interstellar Ice Analogues by Meierhenrich, Uwe J., Muñoz Caro, Guillermo M., Schutte, Willem A., Thiemann, Wolfram H.-P., Barbier, Bernard, Brack, André

“…Biological cofactors include functionalized derivatives of cyclic tetrapyrrole structures that incorporate different metal ions. They build up structural…”
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Analysis of chlorinated paraffins in cutting fluids and sealing materials by carbon skeleton reaction gas chromatography by Koh, In-Ock, Rotard, Wolfgang, Thiemann, Wolfram H.-P

“…Chlorinated paraffins (CPs) pose a major risk in the environment, due to their wide application, to their persistence, to their carcinogenic potential, and in…”
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Gas chromatographic separation of saturated aliphatic hydrocarbon enantiomers on permethylated β-cyclodextrin by Meierhenrich, Uwe J., Nguyen, Mai-Julie, Barbier, Bernard, Brack, André, Thiemann, Wolfram H.-P.

“…Enantiomers of chiral aliphatic hydrocarbons are generally difficult to separate because they lack functional groups to be derivatized in order to generate…”
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Photochemical concepts on the origin of biomolecular asymmetry by Meierhenrich, Uwe J, Thiemann, Wolfram H P

“…Biopolymers like DNA and proteins are strongly selective towards the chirality of their monomer units. The use of homochiral monomers is regarded as essential…”
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Evaluating the robustness of the enantioselective stationary phases on the Rosetta mission against space vacuum vaporization by Meierhenrich, Uwe J., Cason, Julie R.L., Szopa, Cyril, Sternberg, Robert, Raulin, François, Thiemann, Wolfram H.-P., Goesmann, Fred

“…The European Space Agency’s Rosetta mission was launched in March 2004 in order to reach comet 67P/Churyumov–Gerasimenko by August 2014. The Cometary Sampling…”
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Homochirality of the evolution of biospheres by Thiemann, W H

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Circular polarization of light by planet Mercury and enantiomorphism of its surface minerals by Meierhenrich, Uwe J, Thiemann, Wolfram H P, Barbier, Bernard, Brack, André, Alcaraz, Christian, Nahon, Laurent, Wolstencroft, Ray

“…Different mechanisms for the generation of circular polarization by the surface of planets and satellites are described. The observed values for Venus, the…”
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Cover Picture: Precursors of Biological Cofactors from Ultraviolet Irradiation of Circumstellar/Interstellar Ice Analogues (Chem. Eur. J. 17/2005) by Meierhenrich, Uwe J., Muñoz Caro, Guillermo M., Schutte, Willem A., Thiemann, Wolfram H.-P., Barbier, Bernard, Brack, André

“…A mosaic of Orion's Great Nebula (M42), a nearby starbirth region, is shown on the cover (Hubble space telescope; C. R. O'Dell (Vanderbilt University) and…”
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Enantiomer separation of hydrocarbons in preparation for ROSETTA's "chirality-experiment" by Meierhenrich, Uwe J., Thiemann, Wolfram H.-P, Goesmann, Fred, Roll, Reinhard, Rosenbauer, Helmut

“…Until now the favored method for separating racemic pairs of underivatized alcohols, diols, and phenylsubstituted amines has been gas chromatography on…”
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Molecular parity violation via comets? by Meierhenrich, Uwe, Thiemann, Wolfram H.-P., Rosenbauer, Helmut

“…Recent theoretical and experimental investigations referring to the origin of homochirality are reviewed and integrated into the hitherto known state of the…”
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Non-racemic amino acid production by ultraviolet irradiation of achiral interstellar ice analogs with circularly polarized light by Thiemann, Wolfram H.-P.

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Book Review: Amino Acids and the Asymmetry of Life by Uwe Meierhenrich by Thiemann, Wolfram H.-P.

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Pyrolytic methylation assisted enantioseparation of chiral hydroxycarboxylic acids by Meierhenrich, Uwe, Thiemann, Wolfram H.-P., Rosenbauer, Helmut

“…Quaternary ammonium salts and dialkylformamide acetals have been demonstrated to be effective reactants for the injector port gas phase derivatization of…”
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Gas chromatographic separation of saturated aliphatic hydrocarbon enantiomers on permethylated ?-cyclodextrin by Meierhenrich, Uwe J., Nguyen, Mai-Julie, Barbier, Bernard, Brack, Andr, Thiemann, Wolfram H.-P.

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