Do locational fundamentals such as coastlines and rivers determine town locations, or can historical events trap towns in unfavorable locations for centuries? We examine the effects on town locations of the collapse of the Western Roman Empire, which temporarily ended urbanization in Britain, but not in France. As urbanization recovered, medieval towns were more often found in Roman-era town lo...

Abstract The superfamily Buccinoidea is distributed across the oceans of world from Arctic Ocean to Antarctic and intertidal abyssal depths. It encompasses 3351 recent species in 337 genera. latest taxonomic account recognized eight full families. For first time, monophyly relationships among families are tested with molecular data supplemented by anatomical radula data. Five genetic markers we...

A new approach for Quartz Enhanced Photoacoustic Spectroscopy is presented, based on an acoustic excitation from the outside of prongs a quartz tuning fork, to increase sensitivity sensor. For this purpose, we introduce monolithic double-resonator (double-mR) in T-shape configuration, using 3D printing. It was modelized and experimentally characterized 1392 nm distributed feedback laser diode, ...

Randall Harris, of Ohio State University, Columbus, Ohio, and colleagues presented very interesting results from a prospective study on the effects of anti-inflammatory agents in the chemoprevention of breast cancer in women enrolled in the Women's Health Initiative observational study. A total of 80,741 postmenopausal women (50-79 years of age) with no previous history of cancer (other than no...