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The UCLA Cosmochemistry Database [PDF]

open access: yesScientific Data, 2023
The UCLA Cosmochemistry Database was initiated as part of a data-rescue and -storage project aimed at archiving a variety of cosmochemical data acquired at University of California, Los Angeles (UCLA).
Bidong Zhang   +15 more
doaj   +5 more sources

An investigation of the internal morphology of asbestos ferruginous bodies: constraining their role in the onset of malignant mesothelioma [PDF]

open access: yesParticle and Fibre Toxicology, 2023
Background Asbestos is a fibrous mineral that was widely used in the past. However, asbestos inhalation is associated with an aggressive type of cancer known as malignant mesothelioma (MM).
Maya-Liliana Avramescu   +4 more
doaj   +2 more sources

Constraining Earth’s core composition from inner core nucleation [PDF]

open access: yesNature Communications
The composition of Earth’s core is a fundamental property of the Earth’s deep interior, defining its present structure and long term thermal and magnetic evolution. However, the composition of the core is not well understood, with several combinations of
Alfred J. Wilson   +3 more
doaj   +2 more sources

Alternative Pathways in Astrobiology: Reviewing and Synthesizing Contingency and Non-Biomolecular Origins of Terrestrial and Extraterrestrial Life [PDF]

open access: yesLife
The pursuit of understanding the origins of life (OoL) on and off Earth and the search for extraterrestrial life (ET) are central aspects of astrobiology.
Kuhan Chandru   +2 more
doaj   +2 more sources

The kerogen vanadyl porphyrins: Incorporation during catagenesis [PDF]

open access: yesJournal of the Serbian Chemical Society, 1999
Natural vanadyl (VO 2+)-deoxophylloerythroetioporphyrins (DPEP) have been shown to be capable of reacting and quantitatively incorporating into immature kerogen model materials (torbanite, lignites, subbituminous coal and immature lacustrine ...
Premović Pavle I.   +3 more
doaj   +1 more source

Geochemistry of the cretaceous-tertiary transition boundary at Blake Nose (N. W. Atlantic): Cosmogenic Ni [PDF]

open access: yesJournal of the Serbian Chemical Society, 2004
The Cretaceous-Tertiary (KT) boundary transition at the Blake Nose Plateau recovered by ODP Leg 171B (site 1049, hole A, core 17X, section 2) contains an ejecta bed (thickness ca. 17 cm) marking a late Cretaceous asteroid impact.
Premović Pavle I.   +3 more
doaj   +1 more source

On the Nucleosynthetic Origin of Presolar Silicon Carbide X-Grains

open access: yesUniverse, 2022
In this paper we present an extension of our nucleosynthesis parameter study within the classical neutrino-driven wind scenario of core-collapse supernovae (ccSNe).
Waheed Akram   +3 more
doaj   +1 more source

Fourier transform infrared and electron spin resonance examinations of kerogen from the gunflint stromatolitic cherts (Middle Precambrian, Ontario, Canada) and related materials [PDF]

open access: yesJournal of the Serbian Chemical Society, 2000
Kerogen occurrences in stromatolitic cherts from the Middle Precambrian Gunflint Formation and related rocks have been investigated by the use of elemental analysis, Fourier transform infrared and electron spin resonance spectroscopies ...
Premović Pavle I.   +3 more
doaj   +1 more source

Cretaceous-tertiary boundary layer at Stevns Klint (Denmark): Copper and copper(II) porphyrins [PDF]

open access: yesJournal of the Serbian Chemical Society, 1999
High concentrations (up to 4000 ppm) of copper(II) porphyrins have been detected in the kerogen of the Cretaceous/Tertiary (KT) boundary informal type sediment, the Fish Clay, at Stevns Klint, Denmark.
Premović Pavle I.   +4 more
doaj   +1 more source

Noble Gas Mass Spectrometry in Earth and Planetary Sciences

open access: yesCHIMIA, 2022
: Noble gases are very rare elements in most relevant samples in geochemistry and cosmochemistry. Noble gases may perhaps also look rather boring to chemists, as they do not form any stable compounds.
Rainer Wieler
doaj   +1 more source

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