Results 41 to 50 of about 26,227,955 (381)

In situ U–Pb analysis of shocked zircon from the Charlevoix impact structure, Québec, Canada

open access: yesMeteoritics and Planetary Science, 2019
Laser ablation inductively coupled plasma‐mass spectrometry (LA‐ICP‐MS) U–Pb geochronology of shocked zircon grains in a vesicular‐fluidal impact melt rock from the ≥54 km Charlevoix impact structure, Québec, Canada, suggests an Ordovician to Silurian ...
M. Schmieder   +4 more
semanticscholar   +1 more source

Corporate governance structure and firm performance : empirical evidence from Brusa Malaysia, Kuala Lumper [PDF]

open access: yes, 2005
The issue of corporate governance has been emerging as important phenomena that has been searched extensively both in developed countries due to its strategic impact on the monitoring of management activities and firms’ performance.
Ali Ahmed, Huson Joher, Ali, Mohd
core   +2 more sources

Documentation of shock features in impactites from the Dhala impact structure, India

open access: yesMeteoritics and Planetary Science, 2019
The fundamental approach for the confirmation of any terrestrial meteorite impact structure is the identification of diagnostic shock metamorphic features, together with the physical and chemical characterization of impactites and target lithologies ...
J. Pati   +5 more
semanticscholar   +1 more source

Identification of a meteoritic component using chromium isotopic composition of impact rocks from the Lonar impact structure, India

open access: yesMeteoritics and Planetary Science, 2019
The existence of mass‐independent chromium isotope variability of nucleosynthetic origin in meteorites and their components provides a means to investigate potential genetic relationship between meteorites and planetary bodies.
B. Mougel   +4 more
semanticscholar   +1 more source

Titanium Dioxide: Structure, Impact, and Toxicity

open access: yesInternational Journal of Environmental Research and Public Health, 2022
Titanium dioxide, first manufactured a century ago, is significant in industry due to its chemical inertness, low cost, and availability. The white mineral has a wide range of applications in photocatalysis, in the pharmaceutical industry, and in food ...
Anca Diana Racovita
semanticscholar   +1 more source

Bouguer anomaly inversion and hydrocode modeling of the central uplift of the Araguainha impact structure

open access: yesAnais da Academia Brasileira de Ciências, 2021
Araguainha is a mid-sized complex impact structure formed in sedimentary and underlying basement rocks of the Paraná Basin, Brazil. The structure has strongly deformed sedimentary strata surrounding a granitic core. The central uplift is a region of high
MARCELLE R. MIYAZAKI   +4 more
doaj   +1 more source

Impact of constrained rewiring on network structure and node dynamics [PDF]

open access: yes, 2014
In this paper, we study an adaptive spatial network. We consider a susceptible-infected-susceptible (SIS) epidemic on the network, with a link or contact rewiring process constrained by spatial proximity.
I. Z. Kiss   +5 more
core   +2 more sources

Scaling and Structural Impact

open access: yesProcedia Engineering, 2017
Abstract Experiments dealing with impact of large structures, like ships and buses, are cost prohibitive. One possibility is to test scaled models, which unfortunately do not obey the scaling laws due to material strain rate sensitivity. A set of scaling numbers is here presented that allow perfect similarity between model and strain rate sensitive ...
L.M. Mazzariol   +3 more
openaire   +2 more sources

Impactites of the Mistastin Lake impact structure: Insights into impact ejecta emplacement

open access: yesMeteoritics and Planetary Science, 2018
The Mistastin Lake impact structure is an intermediate‐size (~28 km apparent crater diameter), complex crater formed ~36 Myr. The original crater has been differentially eroded; however, a subdued terraced rim and distinct central uplift are still ...
M. Mader, G. Osinski
semanticscholar   +1 more source

PENGARUH UKURAN PARTIKEL SERBUK EVAPORATION BOATS DALAM PEMBUATAN KOWI (CRUCIBLE) TERHADAP KEKUATAN IMPACT DAN STRUKTUR MAKRO

open access: yesRekayasa Mesin, 2023
Kowi or crucibles come from refractory materials. This study aims to determine the effect of the powder particle size of evaporation boats on impact resistance and macro structure. The research method used is experimental research.
Jurdan Fulandy Siswoyo   +4 more
doaj   +1 more source

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