Results 81 to 90 of about 2,457 (208)
Clumped Isotope Signatures of Abiotic Methane: The Role of the Combinatorial Isotope Effect
Journal of Geophysical Research: Solid Earth, Volume 129, Issue 7, July 2024.Abstract Methane clumped isotope signatures of abiogenesis may be diagnostic of the origin of methane on Earth and other planetary bodies. We performed synthesis of abiogenic methane in hydrothermal conditions between 130 and 300°C and determined δ13C, δD, Δ13CH3D, and Δ12CH2D2.
Jabrane Labidi +5 more
wiley +1 more source
ChemSystemsChem, Volume 6, Issue 3, May 2024.An automated platform explores the reactions of amino acids in the presence of mineral environments and searches for evidence of the onset of selection. The outcome of oligomerisation is significantly influenced by the presence of different minerals, with certain environments selecting specific fragments that enable the formation defined sequences as a
Silke Asche +5 more
wiley +1 more source
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
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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
Drake Equation for the Multiverse: From the String Landscape to Complex Life
, 2010 It is argued that selection criteria usually referred to as "anthropic conditions" for the existence of intelligent (typical) observers widely adopted in cosmology amount only to preconditions for primitive life.
Baross J. A. +16 more
core +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
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
THE OCTOMORPHIC ORIGIN OF LIFE ABIOGENESIS
This paper presents a geometric mechanism for the origin of life based on the Octomorphic Framework. Instead of treating life as a chemical accident, the model shows how specific coherence structures emerge naturally from the geometry of matter. Using three core quantities — triangle-braidness (TB), phase strain (Delta L), and mean coherence curvature (
Simpson, Brian
openalex +2 more sources
Heroical Apatheism: Mala Fide Bootstrapping Obligations [PDF]
, 2018 Discussions on hypothetical gods virtually always focus on the latter’s existence or nonexistence. However, this is only the secondary question. Heroical apatheism distinguishes these questions from the primary question, which pertains to the importance ...
Von Hegner, Ian
core +1 more source
The Sorites Paradox, “Life,” and Abiogenesis [PDF]
Evolution: Education and Outreach, 2012 Abstract The ancient Greek philosopher Eubulides of Miletus drew attention to the impossibility of defining a point of transition between two states or conditions at opposite ends of a continuum. The ensuing “drawing the line” conundrum—the sorites paradox—arises from the vague predicates which humans use to convey concepts. It is argued that
openaire +1 more source