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Four-winged dinosaurs from China
TLDR
New evidence is provided suggesting that basal dromaeosaurid dinosaurs were four-winged animals and probably could glide, representing an intermediate stage towards the active, flapping-flight stage of proavians.
Using ion-pair reversed-phase HPLC ICP-MS to simultaneously determine Cr(III) and Cr(VI) in urine of chromate workers.
TLDR
Analytical method based on ion-pair reversed-phase HPLC combined with ICP-MS to simultaneously determine Cr(III) and Cr(VI) in human urine has been developed for assessing the occupational exposure to chromate, showing a significant relationship between the urinary Cr( VI) and the individual airborne exposure levels.
Delayed hyperenhancement patterns in occlusive and reperfused myocardial infarcts during different healing stages
TLDR
To investigate delayed hyperenhancement during different healing stages of myocardial infarct with and without reperfusion in a pig model, a new pig model is constructed.
Origin of flight: Could ‘four-winged’ dinosaurs fly? (Reply)
TLDR
It is agreed that a strict biomechanical analysis is needed to reconstruct Microraptor's locomotory mode, but several of Padian and Dial's arguments are disagreed with.
Computed tomography ( CT ) of nasal cavity ofIkechosaurus sunailinae (Reptilia: Choristodera)
TLDR
The results indicate that Ikechosaurus may have had a strong ability to thermoregulate, thus keeping a high level of activity, but it still did not maintain constant temperature, as the birds and mammals do.