News tagged with veins
Hacking code of leaf vein architecture solves mysteries, allows predictions of past climate
(Phys.org) -- UCLA life scientists have discovered new laws that determine the construction of leaf vein systems as leaves grow and evolve. These easy-to-apply mathematical rules can now be used to better ...
May 23, 2012 |
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First rainforests arose when plants solved plumbing problem
A team of scientists, including several from the Smithsonian Institution, discovered that leaves of flowering plants in the world's first rainforests had more veins per unit area than leaves ever had before. ...
May 03, 2011 |
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Artificial Leaves Generate Power by Pumping Water
(PhysOrg.com) -- Natural leaves constantly lose water through evaporation, as the water in their veins is pumped up to the top of the tree. This process, called transpiration, could also create a mechanical ...
Aug 03, 2009 |
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The hills are evolving: New model predicts speed of spreading valleys
From high above the Florida Panhandle, the Apalachicola Bluffs -- a winding system of steep ravines -- look like the branching veins of a leaf.
Space & Earth / Earth Sciences
Feb 06, 2012 |
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Iron 'veins' are secret of promising new hydrogen storage material
(PhysOrg.com) -- With a nod to biology, scientists at the National Institute of Standards and Technology have a new approach to the problem of safely storing hydrogen in future fuel-cell-powered cars. Their ...
Aug 31, 2011 |
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Diabetics get blood vessels made from donor cells
Three dialysis patients have received the world's first blood vessels grown in a lab from donated skin cells. It's a key step toward creating a supply of ready-to-use arteries and veins that could be used ...
Medicine & Health / Medical research
Jun 27, 2011 |
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Flowers' rapid growth rate can be traced back 65 million years
Researchers have discovered that an evolutionary change from 65 million years ago may have set the pace for the rapid growth rate of present-day flowering plants.
Other Sciences / Archaeology & Fossils
May 10, 2011 |
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Scientists grow blood vessels for human surgery
Scientists can grow blood vessels in a lab for use in coronary bypass or dialysis, a promising alternative to harvesting from the patient, said a study published on Wednesday.
Medicine & Health / Medical research
Feb 02, 2011 |
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The lifeblood of leaves: Vein networks control plant patterns
New University of Arizona research indicates that leaf vein patterns correlate with functions such as carbon intake and water use – knowledge that could help scientists better understand the complex carbon ...
Nov 17, 2010 |
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X-ray crystallography reveals structure of precursor to blood-clotting protein
Using state-of-the-art robotic and x-ray crystallographic equipment, researchers at Saint Louis University have revealed for the first time the molecular structure of the zymogen, or inactive, form of a blood-clotting enzyme.
Chemistry / Analytical Chemistry
Nov 02, 2010 |
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Polish bank claims Europe's first biometric cash point
Poland's cooperative BPS SA bank claimed Tuesday to be the first in Europe to install a biometric cash point allowing its clients to use their fingertips rather than a bank card to withdraw money.
Technology / Hi Tech & Innovation
May 11, 2010 |
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Leaf veins inspire a new model for distribution networks (w/ Video)
(PhysOrg.com) -- Following the straight and narrow may be good moral advice, but it’s not a great design principle for a distribution network. In new research, a team of biophysicists describe a complex netting of interconnected ...
Feb 09, 2010 |
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Carbonate veins reveal chemistry of ancient seawater
The chemical composition of our oceans is not constant but has varied significantly over geological time. In a study published this week in Science, researchers describe a novel method for reconstructing past o ...
Space & Earth / Earth Sciences
Feb 05, 2010 |
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Breakthrough in 3-D Brain Mapping Enables Removal of Fist-Sized Tumor
(PhysOrg.com) -- A new technology involving the fusion of four different types of images into a 3-D map of a patient's brain has helped University of Cincinnati (UC) specialists successfully remove a fist-sized ...
Medicine & Health / Medical research
Jul 14, 2009 |
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Grapefruit diet almost cost woman her leg
A woman who ate a grapefruit each day almost had to have her leg amputated because of a dangerous blood clot, according to an unusual case study reported in the Lancet.
Medicine & Health / Medical research
Apr 02, 2009 |
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Vein
In the circulatory system, veins (from the Latin vena) are blood vessels that carry blood toward the heart. Most veins carry deoxygenated blood from the tissues back to the heart; exceptions are the pulmonary and umbilical veins, both of which carry oxygenated blood. They differ from arteries in structure and function; for example, arteries are more muscular than veins and they carry blood away from the heart.
For more information about Vein, read the full article at
Wikipedia.
This text uses material from Wikipedia and is available under the GNU Free Documentation License.
