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The relationship between Braid Theory and the organisation of periodic orbits of dynamical systems is considered. It is shown that for some (physically relevant) 3-d flows the characterisation of periodic orbits by means of Braid Theory can be done on the Poincaré surface in an efficient way. The result is a thread-less graphical presentation of a braid class. We discuss extensions of this appro
Intraductal papillary mucinous neoplasms (IPMNs), characterized by intraductal papillary growth and thick mucin secretion, have increasingly been recognized. Despite modern preoperative evaluation, major difficulties still remain in distinguishing malignant invasive types from benign IPMNs. Following a PubMed database search, all relevant abstracts and articles on IPMN published in English and Chi
Abstract In a 3-year-old boy, a continuous heart murmur was heard. The echocardiogram showed a dilated right coronary artery suggesting the existence of a coronary fistula. A more detailed echocardiogram when the patient was sedated revealed a fistula leading to a large aneurysm and further to the right atrium. The accidental dissection and thrombosis during the interventional heart catheterizatio
Vascular aging is described as a gradual process involving biochemical, enzymatic, and cellular changes of the vasculature and modification of the signals that modulate them. On the basis of this conception a new pathophysiological model for deeper understanding of cardiovascular risk and its treatment was introduced. The idea of early vascular aging, that is the acceleration of vascular aging see
The antigens of the ABO system were the first to be recognized as blood groups and actually the first human genetic markers known. Their presence and the realization of naturally occurring antibodies to those antigens lacking from the cells made sense of the erratic failure of blood transfusion hitherto and opened up the possibility of a safe treatment practice in life-threatening blood loss. Alth
Despite a growing interest in critical social and political studies of climate change, the field remains fragmented and diffuse. This is the first volume to collect this body of scholarship, providing a key reference point in the growing debate about climate change across the social sciences. The book provides a new set of insights into the ways in which climate change is creating new forms of soc
