Results 171 to 180 of about 64,276 (302)

Metamorphic or Igneous Zircon? Classification Through Rare Earth Elements, Machine Learning and Logistic Regression

open access: yesJournal of Metamorphic Geology, EarlyView.
ABSTRACT Zircon is a common, highly refractory accessory mineral found in sedimentary, igneous and metamorphic rocks that forms through various processes (e.g., magmatic, hydrothermal, metamorphic growth and recrystallization). Trace element compositions of detrital zircon have been widely applied to understanding tectonic processes and continental ...
Jarrod M. Burges   +5 more
wiley   +1 more source

Computed tomography reveals multiple origins of extreme caudal vertebral pneumaticity in sauropod dinosaurs

open access: yesJournal of Anatomy, EarlyView.
Here, we present novel CT scan data of caudal vertebrae of six Middle–Late Jurassic sauropods, representing several eusauropod lineages. We synthesise these new data with a comprehensive critical appraisal of purported external and internal evidence for caudal vertebral PSP in Sauropodomorpha.
Samantha L. Beeston   +5 more
wiley   +1 more source

Failure Strain of Brazilian Disc Samples of Marble after High Temperature Under Dynamic Split Tests

open access: yes工程科学与技术, 2008
:Brazilian disc is popular sample used for the measurement of tensile properties of brittle materials like marble. In order to study the laws of the failure strains after temperature treatment under dynamic tension, the dynamic split tests of a series of
doaj  

Marbles [PDF]

open access: yesChest, 2018
openaire   +1 more source

Russia's Wartime Economy: Measuring Regional Inequalities From Outer Space

open access: yesJournal of Regional Science, EarlyView.
ABSTRACT We study Russia's February 2022 full‐scale invasion of Ukraine as a natural experiment to determine how sudden disruptions to international market access reshape sub‐national economic inequalities. Using remotely‐sensed nighttime lights as a proxy for economic activity, we estimate the economic effects of the war at the national and regional ...
Irakli Barbakadze   +3 more
wiley   +1 more source

Evaluating 20% and 40% Inclusion of Sugary Former Foods in Pig Diets: Effects on Growth Performance, Feeding Behaviour, Carcass and Meat Quality Traits

open access: yesJournal of Animal Physiology and Animal Nutrition, EarlyView.
ABSTRACT Former food products (FFP) are food industry leftovers that can be used as feed ingredients. We investigated the effects of sugary FFP on growth, feeding behaviour, carcass and meat quality of pigs fattened to a heavy weight. Three inclusion levels were tested: 0% (FFP‐0 = control), 20% (FFP‐20) and 40% (FFP‐40) FFP in grower (20–60 kg BW ...
Marjeta Čandek‐Potokar   +4 more
wiley   +1 more source

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