200 J Fam Plann Reprod Health Care 2012;38:200–201. doi:10.1136/jfprhc-2012-100399 First marriage The divorce of King Henry VIII from his first wife, Catherine of Aragon, has, over the centuries, produced a positive paper storm of academic books and popular works, examination papers and essays. As a subject it has also inspired a number of films and TV documentaries. King Henry posed an argumen...

BACKGROUND We assessed aspects of Seguro Popular, a programme aimed to deliver health insurance, regular and preventive medical care, medicines, and health facilities to 50 million uninsured Mexicans. METHODS We randomly assigned treatment within 74 matched pairs of health clusters-ie, health facility catchment areas-representing 118 569 households in seven Mexican states, and measured outcom...

Remote sensing activities from satellite are important aspect togain information about earth surface, thus has significance on military, economic and geology fields. After 1962, the term remote became popular typically refers to non-intrusive observation of Earth using electromagnetic waves a platform some distance away object study. implies measurement made by indirect or “remote” means rather...

As magmas rise toward the surface, they traverse regions of the mantle and crust with which they are not in equilibrium; to the extent that time and the intimacy of their physical contact permit, the melts and country rocks will interact chemically. We have modeled aspects of these chemical interactions in terms of ion-exchange processes similar to those operating in simple chromatographic colu...

The Pinacate volcanic fi eld is ~330 km SSW of Phoenix, and it is a popular destination for volcanology and planetary geology fi eld trips. The volcanic fi eld, located on the Pinacate Biosphere Reserve in Sonora, Mexico, is a 1500 km2 basaltic fi eld including a shield volcano, lava tubes, maars, a tuff cone, cinder cones, pāhoehoe and ‘a‘ā lava fl ows as young as 12 ka, and phreatomagmatic co...

Geology is a complex, semantically rich domain involving the interpretation of geological maps as external visualizations. Geological maps are complex in particular because 3dimensional features must be inferred from 2-dimensional representations depicted by differing line types and weights. Modeling building, as an internal mental activity, is also required in order to achieve deep understandi...

The standard account of the reasoning process within geology views it as lacking a distinctive methodology of its own. Rather, geology is described as a derivative science, relying on the logical techniques exemplified by physics. I argue that this account is inadequate and skews our understanding of both geology and the scientific process in general. Far from simply taking up and applying the ...