Results 101 to 110 of about 2,118 (196)
A Census of Near-UV M-dwarf Flares Using Archival GALEX Data and the gPHOTON2 Pipeline
The Astrophysical Journal, 2023 M-dwarfs are common stellar hosts of habitable-zone exoplanets. Near-UV (NUV) radiation can severely impact the atmospheric and surface conditions of such planets, making the characterization of NUV flaring activity a key aspect in determining ...
Param Rekhi +3 more
doaj +1 more source
Journal of Theoretical Biology 474, 48-51, (2019), 2019 The complex physicochemical structures and chemical reactions in living organism have some common features: (1) The life processes take place in the cytosol in the cells, which, from a physicochemical point of view is an emulsion of biomolecules in a dilute aqueous suspension.
arxiv +1 more source
Enceladus: Astrobiology Revisited
Journal of Geophysical Research: Biogeosciences, Volume 129, Issue 5, May 2024.Abstract Astrobiology research seeks to understand how life begins and evolves, and to determine whether life exist elsewhere in the universe. The discovery of diverse ocean worlds has significantly expanded the number of planetary bodies in the Solar System that could potentially contain life.
A. F. Davila, J. L. Eigenbrode
wiley +1 more source
Prebiotic Vitamin B3 Synthesis in Carbonaceous Planetesimals
ChemPlusChem, Volume 89, Issue 4, April 2024.Aqueous chemistry inside meteorite parent bodies allows the formation of prebiotic molecules crucial for all life in the early solar system. We present a reaction mechanism suitable for vitamin B3 synthesis in this environment, which is experimentally verified in the literature.
Klaus Paschek +3 more
wiley +1 more source
Galactic Distribution of Chirality Sources of Organic Molecules [PDF]
, 2016 Conceptualizing planetary habitability depends on understanding how living organisms originated and what features of environments are essential to foster abiogenesis. Estimates of the abundance of life's building blocks are confounded by incomplete knowledge of the role of chirality and racemization in organic compounds in the origination of living ...
arxiv +1 more source
The Non-Ending Search for a Pre-DNA Replicator: Richard Dawkins and the Problem of Abiogenesis [PDF]
, 2014 This dissertation provides a rebuttal to the claims of Richard Dawkins in explaining the origin of life. The bulk of the ensuing analysis challenges his philosophical assumptions as it notes his vacillation between several models over time.
Fryar, Randall Scott
core
Life, An Evidence for Creation [PDF]
, 2020 The advanced state of understanding of the biochemistry of the bacterial cell, as evidenced by the knowledge of the complete nucleotide sequences of Haemophilus influenzae and Escherichia coli, allows the re·examination of the plausibility of the ...
Javor, George T.
core +1 more source
Subjective Evolution of Consciousness in Modern Science and Vedāntic Philosophy: Particulate Concept to Quantum Mechanics in Modern Science and Śūnyavāda to Acintya-Bhedābheda-Tattva in Vedānta [PDF]
, 2019 How the universe came to be what it is now is a key philosophical question. The hypothesis that it came from nothing or śūnya (as proposed by Stephen Hawking, among others) proves to be dissembling, since the quantum vacuum can hardly be considered a ...
Ph D. Shanta, PhD
core
Schets van de strijd over de generatio spontanea en van de beteekenis van deze strijd voor de ontwikkeling van de microbiologie [PDF]
, 1938 Door de onderzoekingen van Redi, Vallisnieri, Swammerdam en Leeuwenhoek is, ten aanzien van de kleine, lagere en hoogere dieren de strijd voor de mogelijkheid eener spontane generatie vrijwel tot stilstand gebracht....
Edens, Jacob Dirk
core +1 more source
Toward homochiral protocells in noncatalytic peptide systems
, 2009 The activation-polymerization-epimerization-depolymerization (APED) model of Plasson et al. has recently been proposed as a mechanism for the evolution of homochirality on prebiotic Earth.
A Brack +61 more
core +1 more source