Article history: Cm-sized carbonate seafloo Received 6 March 2007 Received in revised form 26 February 2008 Accepted 13 March 2008

Microcalcifications are an early mammographic sign of breast cancer and frequent target for stereotactic biopsy. Despite their indisputable value, microcalcifications, particularly of the type II variety that are comprised of calcium hydroxyapatite deposits, remain one of the least understood disease markers. Here we employed Raman spectroscopy to elucidate the relationship between pathogenicit...

In the title compound, 2C(10)H(18)N(+)·CO(3) (2-), the adamantan-1-aminium cation forms three N-H⋯O hydrogen bonds to three carbonate ions, resulting in a layer parallel to (001) with the adamantane groups located on its surface so that adjacent layers form only C-H⋯H-C contacts. The carbonate anions occupy special positions of 32 symmetry, whereas the adamantan-1-aminium cations occupy special...

AN exTiNCTiON eVeNT 65 MilliON ye Ars AgO Sixty-five million years ago, a comet slammed into the Yucatán Peninsula, just north of what is now the Mexican city of Merida (see Pope et al., 1998 for a review). This comet, perhaps six miles in diameter, would have ejected enough soot and dust into the atmosphere to blot out the sun for months or longer. The ensuing cold and darkness would have caus...

From chronic kidney disease (CKD) Stage 4 onwards, phosphate binders are needed in many patients to prevent the development of hyperphosphataemia, which can result in disturbed bone and mineral metabolism, cardiovascular disease and secondary hyperparathyroidism. In this review, we re-examine the use of magnesium-containing phosphate binders for patients with CKD, particularly as their use circ...

Ocean acidification, due to anthropogenic CO₂ absorption by the ocean, may have profound impacts on marine biota. Calcareous organisms are expected to be particularly sensitive due to the decreasing availability of carbonate ions driven by decreasing pH levels. Recently, some studies focused on the early life stages of mollusks that are supposedly more sensitive to environmental disturbances th...

Dextrans modified with alkyne and azide groups through hydrolysable carbonate esters form degradable microcapsules after Cu(I) catalysed 'click' reaction between azides and alkynes yielding triazole cross-links.