Results 71 to 80 of about 17,275 (278)
An Upper Limit on the Interstellar Meteoroid Flux at Video Sizes from the Global Meteor Network
The Astrophysical JournalMaterial arriving at our solar system from the Galaxy may be detected on Earth in the form of meteors ablating in our atmosphere. Here, we report on a search for interstellar meteors within the highest-quality events in the Global Meteor Network (GMN ...
Paul Wiegert +4 more
doaj +1 more source
Mini-EUSO on Board the International Space Station: Mission Status and Results
InstrumentsThe telescope Mini-EUSO has been observing, since 2019, the Earth in the ultraviolet band (290–430 nm) through a nadir-facing UV-transparent window in the Russian Zvezda module of the International Space Station. The instrument has a square field of view
Laura Marcelli
doaj +1 more source
Investigating relationships among strontium, barium, and seasonality in wild baboons
Archaeometry, EarlyView.Abstract Geochemical profiles of Australopithecus africanus and baboon teeth show fluctuating trace elements, possibly reflecting seasonal diets. Here we use laser ablation–inductively coupled plasma–mass spectrometric measurements of calcium‐normalized strontium and barium ratios (Sr/Ca and Ba/Ca) and ion microprobe analyses of oxygen isotopes (δ18O ...
Maya Bharatiya +12 more
wiley +1 more source
Meteors, Comets and Meteoric Ionization [PDF]
Nature, 1947 A C B Lovell +4 more
openaire +3 more sources
Spectral analysis of four meteors [PDF]
Four meteor spectra are analyzed for chemical composition and radiative processes. The chemical compositions of the Taurid, Geminid, and Perseid meteors were found to be similar to that of a typical stony meteorite.
Harvey, G. A.
core +1 more source
Provider Perceptions of Perinatal Mental Healthcare Access
Birth, EarlyView.Study methodology and conclusions: Primary barriers to care and action items for providers. ABSTRACT Background The consequences of untreated perinatal mental health conditions are well‐established, yet fewer than one in five women experiencing perinatal mental health distress receive treatment. Although recommendations for evidence‐based treatment are
Susanna Sutherland +2 more
wiley +1 more source
Early Holocene jökulhlaup chronology and deglaciation dynamics in central Iceland
Boreas, EarlyView.Glacial lake outburst floods (jökulhlaups) have occurred throughout the Quaternary in glaciated regions worldwide. Reconstructing flood chronology yields insight into deglaciation processes, environmental change and the role of extreme events in landscape evolution.
Greta H. Wells +4 more
wiley +1 more source
GROUPS OF METEORITE-PRODUCING METEOROIDS AND METEORITES IN ASTEROIDAL ORBITS AND THEIR SOURCES
Odessa Astronomical Publications, 2020 This paper presents the results of the analysis of possible existence of nine near-Earth meteorite-producing groups in asteroidal orbits, consisting of sporadic fireballs from the IAU MDC 2007 database, sporadic meteors from the SonotaCo database ...
Yu. M. Gorbanev +2 more
doaj +1 more source
Optical electronics for meteor observations [PDF]
Spectral observations of meteors have been carried out for several years using an optical electronics facility. Interest has centered on faint meteors and their trails in the period of intensive meteor showers. Over 800 meteors were registered during the
Atamas, I. A. +2 more
core +1 more source
Late Holocene moisture variability in Arctic Alaska from chitin δ18O
Boreas, EarlyView.Amplified warming in the Arctic has resulted in reduced sea‐ice extent, which can impact regional climate dynamics. Elucidating past moisture variability in response to changing temperatures and sea‐ice conditions can offer insight into how anthropogenic climate change may impact Arctic areas such as the Alaskan North Slope in the future. We contribute
Briana A. Edgerton, Melissa L. Chipman
wiley +1 more source