Research points to an association between testosterone (T) and partnering in some women and men, and this association has been interpreted as an effect of either relationship status (i.e. differences in relationship status lead to differences in T) or relationship orientation (i.e. T is associated with the likelihood of entering relationships). To address whether physical partner presence was a...

Maria Eugenia Morales-Betoulle,* Herber Morales,† Bradley J. Blitvich,‡ Ann M. Powers,§ E. Ann Davis,¶ Robert Klein,* and Celia Cordón-Rosales* *Universidad del Valle de Guatemala, Guatemala City, Guatemala; †Ministry of Agriculture and Livestock, Guatemala City, Guatemala; ‡Colorado State University, Fort Collins, Colorado, USA; §Centers for Disease Control and Prevention, Fort Collins, Colora...

Passive air samples were collected monthly for 6 months from 8 sites along a transect of Birmingham, United Kingdom between June 2012 and January 2013. Soil samples were collected once at each site. Average concentrations of BDE-209, ΣPBDEs17:183 and ΣPBDEs in ambient air were 150, 49, and 180 pg m(-3), respectively. Atmospheric concentrations of PBDEs were negatively correlated with distance f...

There is still limited understanding of key determinants of spatial spread of influenza. The 1918 pandemic provides an opportunity to elucidate spatial determinants of spread on a large scale. To better characterize the spread of the 1918 major wave, we fitted a range of city-to-city transmission models to mortality data collected for 246 population centres in England and Wales and 47 cities in...

BACKGROUND The relations between geographical proximity and spatial distance constitute a popular topic of concern. Thus, how geographical proximity affects scientific cooperation, and whether geographically proximate scientific cooperation activities in fact exhibit geographic scale features should be investigated. METHODOLOGY Selected statistics from the ISI database on cooperatively author...