Results 71 to 80 of about 2,586 (262)

The Redemption of a Forgotten War: Korea in Australian Memory and Commemoration

open access: yesAustralian Journal of Politics &History, EarlyView.
ABSTRACT This article examines how the Korean War has been remembered in Australia despite its historically marginal place in the nation's military heritage. By detailing Australian memories of the Korean War across official, quasi‐official, and unofficial histories, it shows that Korea occupied only a minor position in Australia's military imaginary ...
David Hundt
wiley   +1 more source

A Curated Dataset of Regional Meteor Events with Simultaneous Optical and Infrasound Observations (2006–2011)

open access: yesData
We present a curated, openly accessible dataset of 71 regional meteor events simultaneously recorded by optical and infrasound instrumentation between 2006 and 2011. These events were captured during an observational campaign using the all-sky cameras of
Elizabeth A. Silber   +3 more
doaj   +1 more source

Modern radar techniques and the hazard of meteoroids to space platforms

open access: yesAnnals of Geophysics, 1998
Modern radar techniques, and in particular ground based radars, are a powerful tool to observe space objects (natural meteoroids and artificial space debris) on account of their all-weather and day-and-night performance.
G. Cevolani
doaj   +1 more source

Mass distribution of lyrid meteoroids [PDF]

open access: yes, 2010
Long-term visual observations of the Lyrid meteoroid shower have been analyzed to determine the mass distribution of Lyrid meteoroids. The value of the parameter S has been confirmed to be less than 1.8, which is normally assumed for meteoroid streams ...
Bel'kovich O., Ishmukhametova M.
core  

Rotation of cometary meteoroids

open access: yes, 2014
Aims. The rotation of meteoroids caused by gas drag during the ejection from a cometary nucleus has not been studied yet. The aim of this study is to estimate the rotational characteristics of meteoroids after their release from a comet during normal ...
D. Čapek
core   +1 more source

Investigating relationships among strontium, barium, and seasonality in wild baboons

open access: yesArchaeometry, 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

The stellar origins of 96Zr excesses in presolar graphites from the Murchison meteorite

open access: yesAstronomy & Astrophysics
Context. Zirconium-96 is a stable isotope that can be synthesized under different neutron-rich nucleosynthetic conditions. Astrophysical models predict its production to occur in various stellar environments: from low-to-intermediate-mass asymptotic ...
Pal I.   +16 more
doaj   +1 more source

Meteoroids Interaction With The Earth Atmosphere

open access: yesJournal of Theoretical and Applied Mechanics, 2014
Abstract In this study we evaluate meteoroid mass and its other properties based on the observed atmospheric trajectory. With account for aerodynamics, we formulate a problem by introducing key dimensionless parameters in the model, responsible for the drag, mass loss and rotation of meteoroid.
Turchak, L. I., Gritsevich, M. I.
openaire   +2 more sources

The Response of a Single Wall Space Structure to Impact by Cometary Meteoroids of Various Shapes [PDF]

open access: yes, 1968
Response of single wall space structure to impact by cometary meteoroids of various ...
Hayduk, R. J.
core  

Spectral and orbital survey of medium-sized meteoroids

open access: yes, 2019
Aims. We investigate the spectra, material properties, and orbital distribution of millimeter- to decimeter-sized meteoroids. Our study aims to distinguish the characteristics of populations of differently sized meteoroids and reveal the heterogeneity of
Juraj Tóth   +4 more
core   +1 more source

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