Geologic Guidebook along Highway 49. Sierran Gold Belt: The Mother Lode Country

Coronary sinus in the management of functional mitral regurgitation: the mother lode or fool's gold?

The past 5 years have seen the introduction into the preclinical arena of myriad devices for the potential treatment of functional and ischemic mitral regurgitation by a percutaneous approach.1 A number of the device concepts have taken advantage of the relatively easy access to the posterior annulus of the mitral valve provided by the coronary sinus. Although attractive on initial consideratio...

Country cardiograms case 49.

Metaphors along the Information Highway

It is absolutely essentially that the metaphors of use surrounding the NII and its component services be examined critically. We need to do this for two reasons. The descriptions and explanations of the NII and its component services will affect the societal debate around implementation and social impacts. Some of the metaphors used to describe the NII, however, distort the real effects and pos...

Effects of Mother Lode-Type Gold Mineralization on 187Os/188Os and Platinum Group Element Concentrations in Peridotite: Alleghany District, California

Osmium isotope compositions and concentrations of Re, platinum group elements (PGE), and Au were determined for host peridotites (serpentinites and harzburgites) and hydrothermally altered ultramafic wall rocks associated with Mother Lode-type hydrothermal gold-quartz vein mineralization in the Alleghany district, California. The host peridotites have Os isotope compositions and Re, PGE, and Au...

From mother duck to mother lode: clinical education for deep learning.

this lovely mixed metaphor had its origins in a recent presentation by Vicky Niederhauser (2009), who described the need to shift from the longstanding “mother duck” model of clinical education and humorously portrayed the great risks to the “baby-duckling” nursing students as their mother-duck faculty member attempts to lead them through a clinical day. and the “mother lode?” that refers to th...