Results 121 to 130 of about 80,006 (331)
On the Unconformities between the Rock-systems underlying the Cambrian Quartzite in Shropshire [PDF]
, 1891 C. Callaway
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, 2018 Although predation has been suggested repeatedly as a force shaping the diversification of animals during the Cambrian period, studies of the evolutionary dynamics of predation are lacking from this time period. Radiodonta, the largest Cambrian nektonic animals, and repaired injuries on trilobites, a diverse and disparate group of prey animals, provide
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A Cambrian origin for vertebrate rods
eLife, 2015 Vertebrates acquired dim-light vision when an ancestral cone evolved into the rod photoreceptor at an unknown stage preceding the last common ancestor of extant jawed vertebrates (∼420 million years ago Ma). The jawless lampreys provide a unique opportunity to constrain the timing of this advance, as their line diverged ∼505 Ma and later displayed high-
ASTERITI, SABRINA +2 more
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Global heart failure epidemiology versus enrolment in pivotal trials: A formidable mismatch
European Journal of Heart Failure, EarlyView.Abstract Aims Randomized clinical trials (RCTs) that inform international clinical practice guidelines should adequately represent regions burdened with disease. We aimed to assess the geographic representativeness of pivotal heart failure (HF) RCTs using two methodological approaches.
Guillaume Baudry +8 more
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On the Cambrian and associated Rocks in North-west Caernarvonshire [PDF]
, 1888 J. F. Blake
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Adaptive walks in a gene network model of morphogenesis: insights into the Cambrian explosion
, 2003 The emergence of complex patterns of organization close to the Cambrian boundary is known to have happened over a (geologically) short period of time.
Fernandez, Pau +2 more
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A normalised seawater strontium isotope curve: possible implications for Neoproterozoic-Cambrian weathering rates and the further oxygenation of the Earth [PDF]
, 2007 The strontium isotope composition of seawater is strongly influenced on geological time scales by changes in the rates of continental weathering relative to ocean crust alteration.
Shields, GA
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Infrared‐Treated Diced Dehydrated Onion: Microbiological Shelf Life and Quality Changes
Food Safety and Health, EarlyView.Blanched, dehydrated, and infrared‐treated diced onions were stored at 25°C, 30°C, and 37°C under 75% humidity. Changes in microbial and quality attributes were studied during the microbiological storage period. ABSTRACT Onion dehydration has been associated with surface contamination.
S. Savitha +2 more
wiley +1 more source
The last common bilaterian ancestor [PDF]
, 2002 Many regulatory genes appear to be utilized in at least superficially similar ways in the development of particular body parts in Drosophila and in chordates.
Davidson, Eric H., Erwin, Douglas H.
core
Geological Journal, EarlyView.Using DZmix and DZstats models, we quantified the contributions of potential sources of the Lanzhou basin. Our findings indicate that the Cenozoic cooling and denudation signals primarily originated from Qilian and West Qinling, which were the main sediment sources.
Hang Liu +3 more
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