Homochirality PowerPoint PPT Presentations
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Axel Brandenburg, based on work with Anja Andersen, ... Impacts, panspermia. Greenhouse effect. Miller experiment. Amino acids, chemistry. Artificial life ...
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Chain growth in the Sandars model. Reaction for left-handed monomers ... a) hydrothermal vents. b) Deep biosphere. Michael J. Russell (2006, Am. Sci. 94, 32-39) ...
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'Why do sugar molecules in DNA and RNA twist to the right in all known organisms? ... The Morrison and Boyd text, Organic Chemistry, now in its 6th Edition, is nearly ...
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Chirality and origin of life. Dead stuff not chiral, so is chirality ... Chirality terminate chain growth. 18. Stability. Relative perturbation of. racemic ...
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Chirality and origin of life. Life: plausible with left/right handed nucleotides ... Source of chirality: Polarized light, electroweak interaction ...
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Origin of homochirality in an early peptide world ... Life only develops in homochiral environment. Isotatic chains more stable ...
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'Results rarely specify their causes unambiguously. ... Chirality and the Origin of Homochirality 'Lectures in Astrobiology, vol.1'. Springer (2005) ...
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Started in Sept. 2001 with Wolfgang Dobler. High order (6th order in space, ... Vorticity and Density. See poster by Tobi Heinemann on density wave excitation! ...
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the Earth is just an ordinary planet, life ... LIFE: creating artificial' life forms (new 'trees of life') ab initio synthesis: all biomolecules (105x speed-up) ...
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Exoplanets and Earth Sciences
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Topics in Astrobiology. What is and can be done. The problem of chirality. 2. The range of problems ... poisoned. Joyce, et al. (incl. Orgel) (1984) (using HPLC) 19 ...
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Preservation of Martian Organic and Environmental Records Working Group: Roger E. Summons, Jan P. Amend, David Bish, Roger Buick, George D. Cody, David J. Des Marais,
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... at the present day such matter would be instantly devoured, or absorbed, which would not have been the case before living creatures were formed.
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Does chirality influence the magic numbers? Serine Octamer. Julian et al JPC B 106 1219 (2002) ... 2 Chirality preference. Mixture of L and D. D only. Statistic ...
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5/ ' SIMPLE WAYS ', material and time savings, to make credible the ... To have been able to go in so different directions, the prebiotic reactions ...
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1. Asymmetric Autocatalysis with Amplification of Enantiomeric ... T.; Morioka, H.; Tabira, H.; Yamamoto, J.; Kowata, Y. Tetrahedron: Asymmetry 2003, 14, 185. ...
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Panspermia being far to be proved, life is born on our planet. ... from Zurich to La Jolla; the first period after arrival is always very hectic. ...
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Symmetry and Molecular Chirality: Lord Kelvins Legacy Laurence Barron
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Nils Erland Haugen (Univ. Trondheim) Wolfgang Dobler ... In the days before helioseismology. Angular velocity (at 4o latitude): very young spots: 473 nHz ...
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Enantio Selective PNA-DNA ligation. Kozlov, Orgel, Nielsen: Angew Chem , 2000, 39: 4292 ... of DNA Directed PNA-DNA Ligation. Evolution of Life. Million years ...
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Mike Riddle m.riddle@verizon.net www.train2equip.com www.icr.org
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The chirality of the SiO4 building block in materials David Avnir Institute of Chemistry, The Hebrew University, Jerusalem Special Symposium on Chemistry
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(5Z,11E)-dibenzo[a,e]cyclooctatetraene 137.8 ppm 74.9 ppm trans,trans,trans-cyclobutane Oxidative coupling Reductive Elimination stable B3LYP/6-31G** [b] ...
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The Chirality of Shells. Each of the shells has either right- or left-handed. chirality. ... Imagine slipping the four fingers of. your right hand into the opening of ...
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Stereochemistry Chapter 6 Is the ... Tamiflu: a drug for influenza Transition state for action of influenza neuraminidase N-acetyl neuraminic acid O-sugar ...
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Thione-thiol tautomerism Safety: Aqueous Co2+ complexes dispose in liquid waste bottle. Wear gloves when working with MIMT Ligands for complexes (A) [Co(MIMT)4 ...
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the chromophore P and the partner B have different chiral configuration ... The gas phase reactivity of a chiral species can be deeply affected by ...
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It is not supported by any direct evidence, nor is it likely to be, but it is ... 'The origin of life is also a stubborn problem, with no solution in sight...
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The synthesis of Dilantin also involves imines (expt 7) ... forms a non-covalent homochiral octamer in a mass spectrometer via electrospray ionization ...
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Asymmetric hydrogenation for the synthesis of amino acids: Addition of hydrogen to an acylamino acrylate results in formation of an amine acid precursor.
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Calcite, one of three polymorphs of crystalline calcium ... R. M. Hazen, T. R. Filley, G. A. Goodfriend, Proc. Natl. Acad. Sci. U S A. 2001, 98, 5487 5490. ...
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