5 research outputs found
Improved Detection of Spontaneous Echo Contrast in the Aorta with Tissue Doppler Imaging
Ancient human genomes suggest three ancestral populations for present day Europeans
We sequenced genomes from a 7,000 year old early farmer from Stuttgart
in Germany, an 8,000 year old hunter-gatherer from Luxembourg, and seven
8,000 year old hunter-gatherers from southern Sweden. We analyzed these
data together with other ancient genomes and 2,345 contemporary humans to show
that the great majority of present-day Europeans derive from at least three
highly differentiated populations: West European Hunter-Gatherers (WHG), who
contributed ancestry to all Europeans but not to Near Easterners; Ancient North
Eurasians (ANE), who were most closely related to Upper Paleolithic Siberians
and contributed to both Europeans and Near Easterners; and Early European
Farmers (EEF), who were mainly of Near Eastern origin but also harbored
WHG-related ancestry. We model these populations' deep relationships and show
that EEF had 44% ancestry from a "Basal Eurasian" lineage that split
prior to the diversification of all other non-African lineages
Hemodynamics: An Introduction
International audienceThe cardiovascular transport circuit is involved in both mass and heat transfer. It carries blood cells as well as oxygen and nutrients to cells of the body’s organs through the perfusing systemic arterial bed and wastes produced by working cells to their final destinations through draining veins. Blood flows throughout the body in the vasculature due to a pressure difference between the ventricular outlet and atrial inlet. Blood is propelled in the systemic and pulmonary circulation by the synchronized action of the left and right apposed cardiac pumps, respectively. Hemodynamics is related to the flow features in the heart and blood vessels, in normal and pathological conditions, in particular the pressure–flow relations and transport of substances by blood to given target organs. It can be required in therapy planning and optimization