Results 51 to 60 of about 2,707 (204)

Microfluidic Reactors for Carbon Fixation under Ambient-Pressure Alkaline-Hydrothermal-Vent Conditions

open access: yesLife, 2019
The alkaline-hydrothermal-vent theory for the origin of life predicts the spontaneous reduction of CO2, dissolved in acidic ocean waters, with H2 from the alkaline vent effluent.
Victor Sojo   +4 more
doaj   +1 more source

A Statistical Estimation of the Occurrence of Extraterrestrial Intelligence in the Milky Way Galaxy

open access: yesGalaxies, 2021
In the field of astrobiology, the precise location, prevalence, and age of potential extraterrestrial intelligence (ETI) have not been explicitly explored.
Xiang Cai   +3 more
doaj   +1 more source

Geochemical and Photochemical Constraints on S[IV] Concentrations in Natural Waters on Prebiotic Earth

open access: yesAGU Advances, Volume 4, Issue 6, December 2023., 2023
Abstract Aqueous S[IV] species (HSO3− ${\mathrm{H}\mathrm{S}\mathrm{O}}_{3}^{-}$, SO32− ${\mathrm{S}\mathrm{O}}_{3}^{2-}$) derived from volcanogenic atmospheric SO2 are important to planetary habitability through their roles in proposed origins‐of‐life chemistry and influence on atmospheric sulfur haze formation, but the early cycling of S[IV] is ...
Sukrit Ranjan   +8 more
wiley   +1 more source

Physical constraints on the likelihood of life on exoplanets [PDF]

open access: yes, 2017
One of the most fundamental questions in exoplanetology is to determine whether a given planet is habitable. We estimate the relative likelihood of a planet's propensity towards habitability by considering key physical characteristics such as the role of
Lingam, Manasvi, Loeb, Abraham
core   +1 more source

Hybrid Life: Integrating biological, artificial, and cognitive systems

open access: yesWIREs Cognitive Science, Volume 14, Issue 6, November/December 2023., 2023
Hybrid Life brings attention to some recent developments within the Artificial Life community, focusing on the integration of three themes: theories of systems and agents, hybrid augmentation combining living and artificial systems, and hybrid interactions among artificial and biological systems.
Manuel Baltieri   +4 more
wiley   +1 more source

Quantifying Catalysis at the Origin of Life**

open access: yesChemistry – A European Journal, Volume 29, Issue 53, September 21, 2023., 2023
Origin of life theories often invoke catalytic mechanisms, but catalysis of biologically relevant reactions in geologically plausible scenarios has been until recently experimentally elusive. In this perspective, we suggest that researchers move toward decreased catalyst loading, increased yields, as well as before/after characterization of metals or ...
Ruvan de Graaf   +3 more
wiley   +1 more source

Quantum Computing for Molecular Biology**

open access: yesChemBioChem, Volume 24, Issue 13, July 3, 2023., 2023
A road map for quantum computing in molecular biology with a potentially ground‐breaking quantum advantage is presented. Key concepts are introduced to connect the terminology of biology, chemistry, physics, and computer science that are all relevant for this transdisciplinary endeavor.
Alberto Baiardi   +2 more
wiley   +1 more source

Quantifying the Origins of Life on a Planetary Scale [PDF]

open access: yes, 2015
A simple, heuristic formula with parallels to the Drake Equation is introduced to help focus discussion on open questions for the origins of life in a planetary context. This approach indicates a number of areas where quantitative progress can be made on
Cronin, Leroy, Scharf, Caleb
core   +2 more sources

Evolution of Realistic Organic Mixtures for the Origins of Life through Wet–Dry Cycling

open access: yesSci, 2022
One of the challenges in understanding chemical evolution is the large number of starting organics and environments that were plausible on early Earth. Starting with realistic organic mixtures and using chemical analyses that are not biologically biased,
Kiernan Foster   +4 more
doaj   +1 more source

Fluid-Deposition of Rocks is Natural Model for Additive Production [PDF]

open access: yesInterdisciplinary Description of Complex Systems, 2017
All created in the Nature is the result of natural technology. Solutions from Nature can be incentive for artificial, man's technology of living (biotechnology) and technology of abiogenesis.
Igor Čatić   +4 more
doaj   +1 more source

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