Results 61 to 70 of about 85,610 (304)

NATURE'S STARSHIPS. I. OBSERVED ABUNDANCES AND RELATIVE FREQUENCIES OF AMINO ACIDS IN METEORITES [PDF]

, 2014
The class of meteorites called carbonaceous chondrites are examples of material from the solar system which have been relatively unchanged from the time of their initial formation.
Alyssa K. Cobb, R. Pudritz
semanticscholar   +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, Víctor Martín-Vélez, Joan Giménez, José Antonio Garcia, Pablo Cermeño, Jordi Figuerola, Raül Aymí, Tomás Montalvo   +7 more
wiley   +1 more source

Cosmic-ray exposure records and origins of meteorites [PDF]

, 1985
The cosmic-ray records of meteorites are used to infer much about their origins and recent histories. The methods used to interpret meteorites' cosmic-ray records, especially identifying simple or complex exposure histories, often are inadequate ...
Reedy, R. C.
core   +1 more source

Orbital evolution of P\v{r}\'{i}bram and Neuschwanstein

, 2011
The orbital evolution of the two meteorites P\v{r}\'{i}bram and Neuschwanstein on almost identical orbits and also several thousand clones were studied in the framework of the N-body problem for 5000 years into the past.
A. Pauls, B.A. Lindblad, D.C. Jones, D.C. Jones, D.O. ReVelle, H. Stauffer, I. Halliday, J. Oberst, J.S. Stuart, Juraj Tóth, Leonard Kornoš, P. Brown, P. Spurný, P. Vereš, P. Vereš, Peter Vereš, R.B. Southworth, V. Porubčan, W.F. Bottke, Z. Ceplecha, Z. Wu   +20 more
core   +1 more source

A Common Reference Material for Mass‐Dependent Sn Isotope Compositions: An Inter‐Laboratory Calibration Approach

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, Manuela A. Fehr, Quentin Amet, Gerhard Brügmann, Caroline Fitoussi, Matthias Friebel, Weiqiang Li, Frederic Moynier, Jia‐Xin She, Xueying Wang, Maria Schönbächler   +10 more
wiley   +1 more source

Formation of nickel–iron meteorites by chemical fluid transport

ScienceOpen Research, 2016
The deposition of solid material from the gas phase via chemical vapor transport (CVT) is a well-known process of industrial and geochemical relevance. There is strong evidence that this type of thermodynamically driven chemical transport reaction plays ...
Werner Schrön
doaj   +1 more source

Development of CCMb: A Low‐Mg Calcite Reference Material for In Situ Measurement of δ18O, δ13C and Selected Trace Elements

Geostandards and Geoanalytical Research, EarlyView.
Key Points Low‐Mg calcite RM developed for in situ microanalysis applications in palaeoclimatology (δ18O, δ13C; Mg, Sr m/m). New data for calcite CRM IAEA‐603 (δ18O, δ13C by SIMS and GS‐IRMS; Mg m/m). No detectable IMF effect of Mg on SIMS δ18O determinations for mass fractions < 3650 μg g‐1.
Andreas T. Hertwig, Maciej G. Śliwiński, Irene Cantarero, Richard A. Stern, Carles Fàbrega, Jakub T. Śliwiński, Thomas Ludwig, František Majs, William Nachlas, John H. Fournelle, Xavier Llovet, Rachelle B. Turnier, David Parcerisa, Anna Travé   +13 more
wiley   +1 more source

Morphology of Meteorite Surfaces Ablated by High-Power Lasers: Review and Applications

Applied Sciences, 2022
Under controlled laboratory conditions, lasers represent a source of energy with well-defined parameters suitable for mimicking phenomena such as ablation, disintegration, and plasma formation processes that take place during the hypervelocity ...
Anna Křivková, Vojtěch Laitl, Elias Chatzitheodoridis, Lukáš Petera, Petr Kubelík, Antonín Knížek, Homa Saeidfirozeh, Barbora Drtinová, Václav Čuba, Dan Páclík, Tomáš Mocek, Jan Brajer, Jan Kaufman, Martin Divoký, Jakub Koukal, Roman Dudžák, Nikola Schmidt, Petr Boháček, Svatopluk Civiš, Libor Lenža, Miroslav Krůs, Martin Ferus   +21 more
doaj   +1 more source

The distribution of meteorite finds in the Namibian desert and recovery of a highly shocked meteorite pairing group. [PDF]

, 2000
Published ...
Bland, PA, Cressey, G, Genge, MJ, Grady, MM, Hutchison, R, Russell, SS, Zolensky, ME   +6 more
core  

Late metal-silicate separation on the IAB parent asteroid: Constraints from combined W and Pt isotopes and thermal modelling

, 2018
The short-lived $^{182}$Hf-$^{182}$W decay system is a powerful chronometer for constraining the timing of metal-silicate separation and core formation in planetesimals and planets. Neutron capture effects on W isotopes, however, significantly hamper the
Cook, David L., Ek, Mattias, Golabek, Gregor J., Hunt, Alison C., Lichtenberg, Tim, Reger, Philip M., Schönbächler, Maria   +6 more
core   +1 more source