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Query: UNIPROT:P50583 (asymmetrical)
 12,197 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Asymmetrical shear rolling with velocity asymmetry and geometry asymmetry is beneficial to enlarge deformation and refine grain size at the center of the thick plate compared to conventional symmetrical rolling. Dynamic recrystallization (DRX) plays a vital role in grain refinement during hot deformation. Finite element models (FEM) coupled with microstructure evolution models and cellular automata models (CA) are established to study the microstructure evolution of plate during asymmetrical shear rolling. The results show that a larger DRX fraction and a smaller average grain size can be obtained at the lower layer of the plate. The DRX fraction at the lower part increases with the ascending speed ratio, while that at upper part decreases. With the increase of the offset distance, the DRX fraction slightly decreases for the whole thickness of the plate. The differences in the DRX fraction and average grain size between the upper and lower surfaces increase with the ascending speed ratio; however, it varies little with the change of the speed ratio. Experiments are conducted and the CA models have a higher accuracy than FEM models as the grain morphology, DRX nuclei, and grain growth are taken into consideration in CA models, which are more similar to the actual DRX process during hot deformation.
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PMID:Comparisons of Different Models on Dynamic Recrystallization of Plate during Asymmetrical Shear Rolling. 2934 80

Literature on conditioned stimulus intensity effects is briefly reviewed and one experiment presented with human subjects and a video-game method. The intensity (Bright or Dim) or color (Red or Blue) of a cue that predicted the appearance of a spaceship was manipulated. Testing was conducted with either the alternate brightness or the alternate color. Responding to the cue was unaffected by its intensity in training. During testing, a downshift in brightness decreased responding while an upshift had no effect, suggesting an asymmetrical intensity gradient. Red tended to condition better than Blue in the first phase, but the same participants conditioned better in the second phase to Blue. The results are discussed with respect to prior demonstrations of intensity effects using within-subject designs and favor an explanation based on stimulus-sampling theory.
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PMID:Intensity effects in human cue-outcome learning. 3178 21