Results 101 to 110 of about 4,557 (205)

The Polonnaruwa meteorite: oxygen isotope, crystalline and biological composition

open access: yes, 2013
Results of X-Ray Diffraction (XRD) analysis, Triple Oxygen Isotope analysis and Scanning Electron Microscopic (SEM) studies are presented for stone fragments recovered from the North Central Province of Sri Lanka following a witnessed fireball event on ...
Gibson, Carl H.   +9 more
core  

Editorial: Leaf functional traits: Ecological and evolutionary implications. [PDF]

open access: yesFront Plant Sci, 2023
Niklas KJ   +4 more
europepmc   +1 more source

Shifts in food webs and niche stability shaped survivorship and extinction at the end-Cretaceous. [PDF]

open access: yesSci Adv, 2022
García-Girón J   +8 more
europepmc   +1 more source

Fingerprinting the Cretaceous-Paleogene boundary impact with Zn isotopes. [PDF]

open access: yesNat Commun, 2021
Mathur R   +8 more
europepmc   +1 more source

Elementary process and meteor train spectra [PDF]

open access: yes
Mechanisms of excitation of individual spectral line radiation were studied experimentally and theoretically and it was demonstrated that such processes as oxidation, resonant charge exchange, dissociative recombination and others play an important part ...
Ovezgeldyev, O. G.
core   +1 more source

The Utility of Infrasound in Global Monitoring of Extraterrestrial Impacts: A Case Study of the 2008 July 23 Tajikistan Bolide

open access: yesThe Astronomical Journal
Among the various observational techniques used for the detection of large bolides on a global scale is a low-frequency sound known as infrasound. Infrasound, which is also one of the four sensing modalities used by the International Monitoring System ...
Elizabeth A. Silber
doaj   +1 more source

Continental flood basalts drive Phanerozoic extinctions. [PDF]

open access: yesProc Natl Acad Sci U S A, 2022
Green T, Renne PR, Keller CB.
europepmc   +1 more source

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