Results 21 to 30 of about 5,545 (213)
Astrobiology, 2023 Life on Earth relies on mechanisms to store heritable information and translate this information into cellular machinery required for biological activity. In all known life, storage, regulation, and translation are provided by DNA, RNA, and ribosomes. Life beyond Earth, even if ancestrally or chemically distinct from life
Jordan M. McKaig +2 more
openaire +3 more sources
Lethaia, EarlyView., 2021 Biomineralization is a generic term used to indicate biological‐mediated mineral formation. In carbonate mineralization, nucleation of crystals can be: (1) controlled directly by the organisms, like in the skeletal formation of most metazoans; (2) induced by microbial communities, by indirect precipitation mediated by their metabolic activities; or (3)
Adriano Guido +4 more
wiley +1 more source
On biosignatures for Mars [PDF]
International Journal of Astrobiology, 2021 AbstractIn this work, we address the difficulty of reliably identifying traces of life on Mars. Several independent lines of evidence are required to build a compelling body of proof. In particular, we underline the importance of correctly interpreting the geological and mineralogical context of the sites to be explored for the presence of ...
Westall, Frances +5 more
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Toward a Biosignature for Suicide [PDF]
American Journal of Psychiatry, 2014 Suicide, a major cause of death worldwide, has distinct biological underpinnings. The authors review and synthesize the research literature on biomarkers of suicide, with the aim of using the findings of these studies to develop a coherent model for the biological diathesis for suicide.The authors examined studies covering a large range of ...
Maria A, Oquendo +6 more
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Taphonomy of Biosignatures in Microbial Mats on Little Ambergris Cay, Turks and Caicos Islands
Frontiers in Earth Science, 2020 Microbial mats are taxonomically and metabolically diverse microbial ecosystems, with a characteristic layering that reflects vertical gradients in light and oxygen availability.
Maya L. Gomes +9 more
doaj +1 more source
Ratiometric glucose sensing based on fluorescent oxygen films and glucose oxidase
Sensing and Bio-Sensing Research, 2017 A new two-layer sensor film was constructed for sensing glucose based on glucose oxidase and oxygen sensing material. The first layer of film containing the oxygen sensor and intra-reference material was polymerized, then the second layer of glucose ...
Fengyu Su +5 more
doaj +1 more source
PLoS ONE, 2018 Microbial life can leave various traces (or biosignatures) in rocks, including biotic alteration textures, biominerals, enrichments of certain elements, organic molecules, or remnants of DNA.
Andreas Türke +2 more
doaj +1 more source
Exoplanet Biosignatures: Understanding Oxygen as a Biosignature in the Context of Its Environment [PDF]
Astrobiology, 2018 55 pages. The paper is the second in a series of 5 review manuscripts of the NExSS Exoplanet Biosignatures Workshop.
Meadows, Victoria S +16 more
openaire +7 more sources
Infrared Spectroscopic Detection of Biosignatures at Lake Tírez, Spain: Implications for Mars [PDF]
, 2019 The detection of potential biosignatures with mineral matrices is part of a multifaceted approach in the search for life on other planetary bodies. The 2020 ExoMars Rosalind Franklin rover includes within its payload three IR spectrometers in the form of
Barcenilla, Rebeca +10 more
core +1 more source
Formalising the Pathways to Life Using Assembly Spaces
Entropy, 2022 Assembly theory (referred to in prior works as pathway assembly) has been developed to explore the extrinsic information required to distinguish a given object from a random ensemble. In prior work, we explored the key concepts relating to deconstructing
Stuart M. Marshall +4 more
doaj +1 more source