Adsorption of rare earth elements in regolith-hosted clay deposits.

Global resources of heavy Rare Earth Elements (REE) are dominantly sourced from Chinese regolith-hosted ion-adsorption deposits in which the REE are inferred to be weakly adsorbed onto clay minerals. Similar deposits elsewhere might provide alternative supply for these high-tech metals, but the adsorption mechanisms remain unclear and the adsorbed state of REE to clays has never been demonstrated in situ. This study compares the mineralogy and speciation of REE in economic weathering profiles from China to prospective regoliths developed on peralkaline rocks from Madagascar.

Importance of anterograde visualization of the coronary venous network by selective left coronary angiography prior to resynchronization.

Background: Understanding of coronary anatomy is essential to the advancement of cardiac resynchronization therapy (CRT) techniques. We determined whether the difficulties associated with catheterization of the coronary sinus (CS) and its lateral branches could be overcome by a preliminary angiographical study of the coronary venous system carried out during a pre-operative coronary angiography with examination of venous return.

Methods And Results: All patients were scheduled for an exploratory angiography procedure and indicated for CRT.

[Risk factors in a young population with acute myocardial infarction: one year prospective study].

Objective: The objective of this work is to give epidemiological data, established in a prospective way, on the myocardial infarction in young and its risk factors.

Methods: All patients admitted to the CHG of Pau for myocardial infarction, old, for the men of less than 45 years and for the women of less than 55 years, of November the 1st 2002 to October 31st, 2003, are included.

Results: Twenty-seven patients (11.

[Prehospital management of acute myocardial infarction. Data from a consecutive cohort of 115 patients in a French region in 2002].

The treatment of acute myocardial infarction is in evolution. Several strategies are utilized ranging from thrombolysis to percutaneous angioplasty (PCI), and the combination of both treatments; the latter providing an interesting compromise between treatment delay and efficiency of early myocardial reperfusion. We reviewed the early treatment strategies of acute myocardial infarctions undertaken by Samu in region 6 (south west of France) in 2002.

[Takayasu disease revealed by dorsalgia].

Unlabelled: Takayasu arteritis is an uncommon inflammatory arteritis especially in children. We report a case.

Case Report: A 11-year-old boy presented dorsalgia with inflammatory syndrome.