Foveal threshold elevation and red-green cone pigment regeneration have been studied in the dark after a wide range of bleaches in normal man with a view to probing the limits of the application of the Dowling-Rushton relation: i.e., the direct proportionality between log threshold elevation and fraction of unregenerated pigment. Cone pigment regeneration (and threshold recovery) is much faster...

Dark-adapted static perimetric fields and rod full-field electroretinograms (ERGs) were measured in normal subjects and 15 patients with retinitis pigmentosa. Psychophysical thresholds for short-wavelength stimuli were obtained from 76 locations across the retina on a modified Octopus 201 perimeter; threshold differences to short- and long-wavelength stimuli were used to determine whether rods ...

0191-8869/$ see front matter 2012 Elsevier Ltd. A http://dx.doi.org/10.1016/j.paid.2012.10.021 ⇑ Tel.: +1 302 831 1650; fax: +1 302 831 6058. E-mail address: [email protected] I review Rushton’s research on the evolutionary divergence of the three major human lineages. His lifehistory theory predicts, and his multiple analyses document, a consistent three-way patterning of mean differences amon...

This paper reports on the CFD study of macro-mixing process of Rushton turbine in stirred tank. The code for mixing calculation is developed in the commercial CFD code CFX4.3. Mixing process simulation on different calculation method, different turbulent model and different tracer adding and detecting position are calculated. The simulation is three-dimensional and the impeller region is explic...

How did human intelligence evolve to be so high? Lynn [Lynn, R. (1991). The evolution of race differences in intelligence. Mankind Quarterly, 32, 99–173] and Rushton [Rushton, J.P. (1995). Race, evolution, and behavior: A life history perspective. New Brunswick: Transaction] suggest that the main forces behind the evolution of human intelligence were the cold climate and harsh winters, which se...

Rushton argues that much variation in human behavior is explained by membership in one of only three genetic groups or ‘‘races’’ (‘‘Negroids,’’ ‘‘Caucasoids,’’ and ‘‘Mongoloids’’). Using previously coded data on the 186 society Standard Cross-Cultural Sample, we find no statistical support for the predicted associations between ‘‘race’’ and behavior. D 2003 Elsevier Inc. All rights reserved.