+ Visit NASA.gov + Contact NASA   + Home Select Search Field * All Report - Patent Number Abstract *Accession Number *NASA Center *Author NameDocument IDKeywordsPublication Date *Title * Find Results With All of the words At least one of the words Enter Search Term  within returned results    Search Tips: Use only the fields with * to search NIX collection. Enclose terms in double quotation marks (") to search for exact phrases, ie: "space shuttle". NOTE: Commas and dashes are removed from search term by search engine. Select Reset Search button to start a new search. See Help for more tips. + NASA Center + Publication Year + Subject + Availability Options + Item/Media Type Selected Navigations: Author > Weber, Arthur L. [x] Sort results by: NASA Center | Date Added to NTRS | Publication Year There are a total of 34 record(s) matching your query. Sorted by: Date Added To NTRS in Descending order 1 2 3 4 Next  Prebiotic Polymer Synthesis and the Origin of Glycolytic Metabolism Author(s): Weber, Arthur L. Abstract: Our research resulted in several discoveries which contributed to understanding the origin and operation of life. (1) Most importantly, we discovered a new pathway of prebiotic amino acid synthesis in which formaldehyde and ... NASA Center: Ames Research Center Publication Year: 1998 Added to NTRS: 2008-06-02 Document ID: 19990040549 The Sugar Model: Autocatalytic Activity of the Triose-Ammonia Reaction Author(s): Weber, Arthur L. Abstract: Reaction of triose sugars with ammonia under anaerobic conditions yielded autocatalytic products. The autocatalytic behavior of the products was examined by measuring the effect of the crude triose-ammonia reaction product ... NASA Center: Ames Research Center Publication Year: 2006 Added to NTRS: 2006-11-22 Document ID: 20060051844 Chemical constraints governing the origin of metabolism: the thermodynamic landscape of carbon group transformations under mild aqueous conditions Author(s): Weber, Arthur L. Abstract: The thermodynamics of organic chemistry under mild aqueous conditions was examined in order to begin to understand its influence on the structure and operation of metabolism and its antecedents. Free energies (deltaG) were ... NASA Center: Ames Research Center Publication Year: 2002 Added to NTRS: 2006-08-02 Document ID: 20040087958 Prebiotic Peptide Synthesis Author(s): Weber, Arthur L. Abstract: Chemical processes occurring on the primitive Earth about four billion years ago yielded molecules that had the ability to make copies of themselves or replicate. These rudimentary replicating molecules eventually developed ... NASA Center: Ames Research Center Publication Year: 2000 Added to NTRS: 2005-11-24 Document ID: 20040077087 Prebiotic Synthesis of Activated Amino Acids Author(s): Weber, Arthur L. Abstract: About four billion years ago chemical processes occurring on the primitive Earth yielded molecules that had the ability to make copies of themselves (i.e., replicate). These rudimentary replicating molecules eventually ... NASA Center: Ames Research Center Publication Year: 1998 Added to NTRS: 2005-11-24 Document ID: 20040075730 Prebiotic polymer synthesis and the origin of glycolytic metabolism Author(s): Weber, Arthur L. Abstract: In the past three years we have made significant progress in four research areas: (1) We developed a new model prebiotic polymer synthesis that yields polydisulfide polymers when dithiols are oxidized by iron(III) of ... NASA Center: NASA (non Center Specific) Publication Year: 1994 Added to NTRS: 2005-08-25 Accession Number: 95N70194; Document ID: 19950002079; Report Number: NAS 1.26:196810, NASA-CR-196810 Model of early self-replication based on covalent complementarity for a copolymer of glycerate-3-phosphate and glycerol-3-phosphate Author(s): Weber, Arthur L. Abstract: Glyceraldehyde-3-phosphate acts as the substrate in a model of early self-replication of a phosphodiester copolymer of glycerate-3-phosphate and glycerol-3-phosphate. This model of self-replication is based on covalent ... NASA Center: NASA (non Center Specific) Publication Year: 1989 Added to NTRS: 2005-08-25 Accession Number: 89N23693; Document ID: 19890014322; Report Number: NAS 1.26:182912, NASA-CR-182912 Redox Energy and Sulfur Chemistry in Prebiotic Polymer Synthesis and Replication Author(s): Weber, Arthur L. Abstract: In the past year we have made significant progress in three research areas: (1) Most importantly, we discovered a new pathway of prebiotic amino acid synthesis in which formaldehyde and glycolaldehyde (substrates of the ... NASA Center: Ames Research Center Publication Year: 1997 Added to NTRS: 2005-08-25 Document ID: 19980007726; Report Number: NAS 1.26:205290, NASA-CR-205290 Prebiotic Peptide Synthesis Author(s): Weber, Arthur L. Abstract: About four billion years ago on the primitive Earth, chemical processes yielded molecules that had the ability to make copies of themselves (self-replicate). Over evolutionary time, these replicating molecules developed into ... NASA Center: Ames Research Center Publication Year: 2002 Added to NTRS: 2005-08-25 Document ID: 20040171744 Redox energy and sulfur chemistry in prebiotic polymer synthesis and replication Author(s): Weber, Arthur L. Abstract: In the past three years we have made significant progress in for research areas: (1) we developed a new model of prebiotic polymer synthesis that yields polydisulfide polymers when dithiols are oxidized by iron (3) of ... NASA Center: NASA (non Center Specific) Publication Year: 1995 Added to NTRS: 2005-08-25 Accession Number: 95N71563; Document ID: 19950003443; Report Number: NAS 1.26:199062, NASA-CR-199062 1 2 3 4 Next  + Back to Top + Sponsored by the NASA Scientific and Technical    Information Program + 2004 Vision for Space Exploration + Freedom of Information Act + NASA Web Privacy Policy and Important Notices + NASA Disclaimers, Copyright Notice,    and Terms and Conditions of Use NASA Official: Calvin Mackey Page Curator: NASA Center for AeroSpace Information (help@sti.nasa.gov) Last Updated: July 5, 2007