News tagged with biological
Common plastics chemicals linked to ADHD symptoms
Medicine & Health / Psychology & Psychiatry
Nov 19, 2009 |
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Phthalates are important components of many consumer products, including toys, cleaning materials, plastics, and personal care items. Studies to date on phthalates have been inconsistent, with some linking exposure to these ...
Warm-blooded dinosaurs worked up a sweat
Nov 11, 2009 |
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(PhysOrg.com) -- Were dinosaurs endothermic (warm-blooded) like present-day mammals and birds or ectothermic (cold-blooded) like present-day lizards? The implications of this simple-sounding question go beyond ...
Scientists bend nanowires into 2-D and 3-D structures
Oct 21, 2009 |
4.3 / 5 (7) |
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(PhysOrg.com) -- Taking nanomaterials to a new level of structural complexity, scientists have determined how to introduce kinks into arrow-straight nanowires, transforming them into zigzagging two- and three-dimensional ...
Like humans, monkeys fall into the 'uncanny valley'
Oct 13, 2009 |
4.4 / 5 (18) |
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(PhysOrg.com) -- Princeton University researchers have come up with a new twist on the mysterious visual phenomenon experienced by humans known as the "uncanny valley." The scientists have found that monkeys ...
New pattern in our biological clock overturns long-held theory
Oct 08, 2009 |
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(PhysOrg.com) -- University of Michigan mathematicians and their British colleagues say they have identified the signal that the brain sends to the rest of the body to control biological rhythms, a finding that overturns ...
Body's circadian rhythm tightly entwined with blood sugar control
Oct 05, 2009 |
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Scientists have long struggled to understand the body's biological clock. Its tick-tock wakes us up, reminds us to eat and tells us when to go to bed. But what sets that circadian rhythm?
Mystery Solved: Marine Microbe Is Source of Rare Nutrient
Space & Earth / Earth Sciences
Sep 29, 2009 |
4.8 / 5 (23) |
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(PhysOrg.com) -- A new study of microscopic marine microbes, called phytoplankton, by researchers at Woods Hole Oceanographic Institution (WHOI) and the University of South Carolina has solved a ten-year-old ...
Large-scale study probes how cells fight pathogens
Sep 03, 2009 |
4 / 5 (4) |
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(PhysOrg.com) -- Scientists have deciphered a key molecular circuit that enables the body to distinguish viruses from bacteria and other microbes, providing a deep view of how immune cells in mammals fend ...
New genetic mechanism that controls body's fat-building process found
Aug 26, 2009 |
4.8 / 5 (4) |
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At a time of alarming increases in obesity and associated diseases -- and fiery debates about the cost of health care -- a UCF research team has identified a new genetic mechanism that controls the body's fat-building process.
Scientists discover potential new drug delivery system
Aug 25, 2009 |
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(PhysOrg.com) -- Scientists at UC Santa Barbara have discovered a potential new drug delivery system. The finding is a biological mechanism for delivery of nanoparticles into tissue. The results are published ...
Scientists show that people really walk in circles when lost (w/ Video)
Aug 20, 2009 |
4.7 / 5 (9) |
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(PhysOrg.com) -- Scientists in the Multisensory Perception and Action Group at the Max Planck Institute for Biological Cybernetics in Tübingen, Germany, led by Jan Souman and Marc Ernst, have now presented ...
Nanoelectronic transistor combined with biological machine could lead to better electronics
Aug 10, 2009 |
4.6 / 5 (11) |
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(PhysOrg.com) -- If manmade devices could be combined with biological machines, laptops and other electronic devices could get a boost in operating efficiency.
Ants more rational than humans
Jul 24, 2009 |
4.2 / 5 (18) |
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In a study released online on July 22 in the journal Proceedings of the Royal Society: Biological Sciences, researchers at Arizona State University and Princeton University show that ants can accomplish a task ...
Biomedical engineers teach bacteria to count
May 28, 2009 |
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Biomedical engineers at Boston University have taught bacteria how to count. Professor James J. Collins and colleagues have wired a new sequence of genes that allow the microbes to count discrete events, opening the door ...
First direct observations of biological particles in high-altitude ice clouds
Space & Earth / Earth Sciences
May 17, 2009 |
4.3 / 5 (10) |
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A team of UC San Diego-led atmospheric chemistry researchers moved closer to what is considered the "holy grail" of climate change science when it made the first-ever direct detection of biological particles ...
