Each month the U. S. Census Bureau receives from the Customs and Border Protection Service documents describing all U.S. exports over $2,500. Most exporters now file the required documents via the Automated Export System. Because of filing options, for the majority of exporters, we have no information on "low-valued" exports (LVEs), those valued at or below the exemption level of $2,500; for th...

[1] In March 2004 the first-ever reported hurricane in the South Atlantic hit southern Brazil. Here we show that Catarina initiated as an extratropical cyclone in a frontal system, undergoing Tropical Transition two days later under persistent low vertical wind shear over near-average water temperatures. The trajectory derived from an automatic tracking scheme showed a rare loop before the cycl...

both climate change and anthropogenic impact are creating a dynamic of continuous changes in ecosystems. while the expected consequences of these changes are global, the occurrence of extreme events and specific environmental problems are usually local or regional phenomenon. in particular, the coastal ecosystems are among the first vulnerable areas to show those changes; in spite of this, are...

Unprecedented perovskite oxyfluoride membranes, a new generation of mixed ionic-electronic conducting (MIEC) membranes, feature extraordinary performance for low-temperature oxygen permeation, which transcend the performance of state-of-the-art MIEC membranes and fulfil commercial requirements. These results provide important progress for MIEC membranes and will potentially open the door to exp...

Pseudoaneurysms (false) aneurysms usually develop when cardiac rupture is contained by preexisting adhesion of the pericardium .These lesions are rare and can be distinguished from true aneurysms by a narrow neck which is devoid of myocardial elements in the walls 6-10 .The complication of pseudoaneurysm like angina ,left ventricular failure , embolization and arrythymias are similar to that of...