The cosmological relevance of emptiness—that is, space without bodies—is not yet sufficiently appreciated in natural philosophy.This paper addresses two aspects of cosmic emptiness from the perspective of natural philosophy: the distances to the stars in the closer cosmic environment and the expansion of space as a result of the acceler
Background.Neurofibromatosis type 1 is a genetic disorder caused by loss-of-function mutations in a tumor suppressor gene (NF1) which codifies the protein neurofibromin.The frequent genetic alterations that modify neurofibromin function are deletions and depileve easy clean insertions.Duplications are rare and phenotype in patients bearing duplicat
Because adolescent leisure is important to development, we consider its role in Portuguese adolescent wellbeing.Data for this study came from 303 adolescents in grades 10, 11, and 12 living in a large urban area in northern Portugal.Self-report data were collected in classrooms using a cross-sectional design in two urban high schools.Hypothesis tes
Various molecular techniques are available to make differences and to study the genetic divergences among species and populations, of which the most efficient ones are PCR-based markers.One of these methods, molecular fingerprinting, enables the distinction of closely related populations.ISSR-primers are universal primers that can be used for such