(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 water pump effect ...
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 cycle that ...
Plants & Animals
Nov 17, 2010
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Researchers from Trinity College Dublin have shown that the wings of insects are not as fragile as they might look. A study just published in the scientific journal PLOS ONE now shows that the characteristic network of veins ...
Plants & Animals
Aug 23, 2012
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Hitachi today announced the development of highly-accurate finger vein authentication technology using the camera commonly integrated in the standard smartphone. This technology will enable the use of biometric authentication ...
Engineering
Oct 26, 2016
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An international team of researchers has found that people in space for long durations can experience blood flowing in the wrong direction in the jugular vein. In their paper published on JAMA Network Open, the group describes ...
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 ocean chemistry ...
Earth Sciences
Feb 5, 2010
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Hand scanning has become an alternative payment method for people in a city in southern Sweden, researchers at Lund University said Monday.
Hi Tech & Innovation
Apr 14, 2014
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New research explains how the nervous system in the gut, known as the enteric nervous system (ENS) causes propulsion along the gut, highlighting how similar it behaves to other neural networks in the brain and spinal cord.
Evolution
Aug 10, 2021
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Fujitsu today announced a practical version of the world's smallest, slimmest and lightest contact-free vein authentication sensor.
Engineering
Apr 12, 2013
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Hitachi, Ltd. today announced the development of a 3mm thick thin-type finger vein authentication module. Finger vein authentication is a biometric identification technology which employs near infrared light to observe finger ...
Hardware
Sep 2, 2009
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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.
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