Homologous recombination affects myriad aspects of genome evolution, from standing levels of nucleotide diversity to the efficacy of natural selection. Rates of crossing over show marked variability at all scales surveyed, including species-, population-, and individual-level differences. Even within genomes, crossovers are nonrandomly distributed in a wide diversity of taxa. Although intra- an...

background and aims: internet addiction is one of the problems emerged with the development of technology. considering the potential negative effects of internet addiction on health, the present study aimed to determine the prevalence of internet addiction in university students in ilam, west of iran, in 2014. methods:in this cross– sectional study, 1066 university students in both public and ...

purpose: to determine the prevalence of refractive errors in the students of mashhad university of medical sciences, iran methods: in this cross-sectional study, we used cluster sampling for selecting participants from every department of mashhad university of medical sciences, proportional to the number of students in each department. each participant received refraction examination with an au...

purpose: to determine the prevalence of uncorrected refractive errors and its determinants in tehran in 2002. methods: a total of 6497 citizens representing a cross-section of the population of tehran were sampled using a stratified random cluster sampling strategy. of these, 4565 (70.3%) subjects participated in the study and were transferred to a clinic for an extensive eye examination and in...

The article presents a cross-cultural study of take-over performance in highly automated driving. As is an important measure safe driving, potential cultural differences could have implications for the future development vehicles. was conducted two culturally different locations, Seattle, WA (n = 20) and Ljubljana, Slovenia 18), using driving simulator. While participants voluntarily engaged se...

Background. The human microbiome has been implicated in the development and maintenance of obesity. We hypothesized that triclosan and triclocarban(TCS), microbicides found in many household and personal care products (HPCP) and present in 75% of US human urine samples, play a role in altering microbiota, metabolic function and weight. Methods. In a double-blind, randomized, cross-over study pa...

INTRODUCTION This study investigated the hypothesis that common environmental chemical exposures with known irritant or sensitising properties trigger exacerbations for patients with chronic obstructive pulmonary disease (COPD). METHODS We conducted a case cross-over study in 168 patients with COPD who were members of a disease management group in central Massachusetts. Participants completed...