Multivectorial paleointensity determination from the Cordova Gabbro, southern Ontario

Distinct cooling histories of troctolites from the Freetown layered gabbro

The iron-titanium oxide minerals of three troctolites from the Freetown layered gabbro have been analysed using an electron microprobe. Comparisons of the analyses of the iron-titanium minerals with the data of Buddington and Lindsley (I964) provide temperature and oxygen fugacity information relating to particular magnetite-ilmenite grains. Magnetite-ilmenite grains occurring in different sili...

Paleointensity estimates from ignimbrites: An evaluation of the Bishop Tuff

Multivectorial abnormal cell migration in the NOD mouse thymus.

We previously described a fibronectin/VLA-5-dependent impairment of NOD thymocyte migration, correlated with partial thymocyte arrest within thymic perivascular spaces. Yet, NOD thymocytes still emigrate, suggesting the involvement of other cell migration-related alterations. In this context, the aim of this work was to study the role of extracellular matrix ligands, alone or in combination wit...

Paleointensity of the ancient Martian magnetic field

[1] Mars today has no core dynamo magnetic field. However, the discovery of remanent magnetization in Martian meteorites and intense crustal magnetization suggests that Mars once had a global field. Here we present high resolution maps of the magnetic field of Martian meteorite ALH 84001. These maps are the most sensitive yet quantitative study of natural remanent magnetization (with resolved a...

Antimicrobial resistance in Escherichia coli isolates from raccoons (Procyon lotor) in Southern Ontario, Canada.

We conducted a cross-sectional study to determine the prevalence of antimicrobial resistance (AMR) in fecal Escherichia coli isolates from raccoons (Procyon lotor) living in Ontario, Canada. From June to October 2007, we trapped raccoons in three areas: one primarily urban site around Niagara, one primarily rural site north of Guelph, and one at the Toronto Zoo. In addition, we conducted a long...