Results 31 to 40 of about 2,871 (203)
Mikrometeorite und ihr Ursprung im Sonnensystem: Außerirdischer Staub zum Anfassen
Physik in unserer Zeit, EarlyView.Mit einer Größe, die der Dicke eines Haares entspricht, sind Mikrometeorite kaum sichtbar für das bloße Auge. Dennoch werden sie seit etwa 150 Jahren gesammelt, und seit wenigen Jahren sogar auf unseren Hausdächern. Als Kostproben von Asteroiden oder Kometen stellen sie wertvolle Boten unseres Sonnensystems dar.
Jenny Feige
wiley +1 more source
Small Methods, EarlyView.Residual stresses in Tiger’s Eye quartz have been mapped by combining Raman spectroscopy and electron back scatter diffraction. The study quantified stress distributions likely formed during cooling due to the anisotropy of thermal contraction. This non‐destructive methodology provides a reliable baseline for mapping stress in both natural polycrystals
Genevieve C. Kidman +4 more
wiley +1 more source
THE EXISTENCE OF GROUPS OF METEORITE-PRODUCING FIRE-BALLS AND METEORITES IN COMET-LIKE ORBITS
Odessa Astronomical Publications, 2018 This paper discusses the existence of groups of meteorite-producing fireballs and ordinary chondrites in the Earth-crossing Jupiter-family comet-like (JFC) orbits.
N. A. Konovalova +2 more
doaj +1 more source
Frontiers in Astronomy and Space Sciences, 2020 Recent studies have uncovered a vast number of thermophilic species in icy environments, permanently cold ocean sediments, cold sea waters, and cool soils.
Tetyana Milojevic +4 more
doaj +1 more source
Ontogeny of foraging behaviour in an opportunistic gull inhabiting urban marine ecosystems
Wildlife Biology, EarlyView.Urbanization affects ecosystems by reducing biodiversity and displacing species from native habitats. While some suffer, others, like urban wildlife, adapt through innovative feeding and behaviours that improve their fitness in human‐altered settings. Despite research on wildlife in urban areas, the development of foraging behaviour in urban species is
Joan Navarro +7 more
wiley +1 more source
Mechano-chemical synthesis of ammonia and acetic acid from inorganic materials in water
Green Processing and Synthesis, 2019 A mechano-chemical reaction formed by a simple high-energy ball milling was applied to simulate the synthesis of ammonia and organic precursors from common inorganic materials that occurred on early Earth.
Kugimiya Koichi +3 more
doaj +1 more source
Boreas, EarlyView.This study examines the distribution and morphology of lakes under the Laurentide Ice Sheet (LIS) to investigate relationships with ice flow velocity, bedrock and basal thermal regime. Palaeo‐ice streams and lobes were important components of the LIS, and properties of lakes in those regions are quantified at high resolution.
Sarah M. Principato, Carissa M. Mobley
wiley +1 more source
Two years of the Javorje meteorite investigations
Geologija, 2012 Meteorite Javorje is a IIIAB medium octahedrite iron meteorite with 7.83 wt% Ni content. It was found inNovember 2009 near village Javorje in the Poljane Valley.
Miloš Miler, Mateja Gosar
doaj
Educational Activities of the First Special Meteor Expedition of the Russian Academy of Sciences in 1921–1922 [PDF]
Гуманитарный векторInvestigating the activities of the First Soviet Meteorite Expedition of 1921–1922, the paper aims to analyze the objectives of the expedition and fill in some gaps in the Quest for the Tunguska Meteorite.
Svetlana V. Bershadskaya
doaj +1 more source
Geostandards and Geoanalytical Research, EarlyView.Key Points We recommend using the notation δ122/118SnNIST SRM 3161a for mass‐dependent Sn isotope data. We derived conversion factors relative to NIST SRM 3161a for Puri Sn CEZA (0.132 ± 0.011‰), Sn Lyon (0.229 ± 0.016‰), Sn IPGP (0.162 ± 0.018‰). Tin isotope compositions are presented for SPEX CertiPrep Sn and nine USGS reference materials.
Aurélia C.E. Meister +10 more
wiley +1 more source