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Proceedings of the National Academy of Sciences
hideThe Proceedings of the National Academy of Sciences of the United States of America, usually referred to as PNAS, is the official journal of the United States National Academy of Sciences. PNAS is an important scientific journal that printed its first issue in 1915 and continues to publish highly cited research reports, commentaries, reviews, perspectives, feature articles, profiles, letters to the editor, and actions of the Academy. Coverage in PNAS broadly spans the biological, physical, and social sciences. Although most of the papers published in the journal are in the biomedical sciences, PNAS recruits papers and publishes special features in the physical and social sciences and in mathematics. PNAS (abbreviated Proc Natl Acad Sci USA for referencing and indexing purposes) is published weekly in print, and daily online in PNAS Early Edition CODEN: PNASC8.
For more information about Proceedings of the National Academy of Sciences, read the full article at
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News tagged with proceedings of the national academy of sciences
On the tip of your tongue: Researchers reveal our motor system activates when we hear speech
Medicine & Health / Neuroscience
7 hours ago |
4.5 / 5 (2) |
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(PhysOrg.com) -- Researchers from Royal Holloway, University of London have discovered our motor system activates automatically when we hear speech. These findings could, in the future, play a central role ...
Enzyme necessary for development of healthy immune system
12 hours ago |
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Mice without the deoxycytidine kinase (dCK) enzyme have defects in their adaptive immune system, producing very low levels of both T and B lymphocytes, the major players involved in immune response, according to a study by ...
Researchers are on the path to creating nano-MRI images
19 hours ago |
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(PhysOrg.com) -- Cornell researchers are devising methods to detect the magnetic fields of individual electrons and atomic nuclei, which they hope to use to make a nanoscale version of magnetic resonance imaging.
Enhanced sweet taste: This is your tongue on pot
10 hours ago |
4 / 5 (1) |
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New findings from the Monell Center and Kyushu University in Japan report that endocannabinoids act directly on taste receptors on the tongue to enhance sweet taste.
Housing growth near national parks may limit conservation value
10 hours ago |
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The growth of housing near national parks, national forests and wilderness areas within the United States may limit the conservation value that these protected areas were designed to create in the first place, a new study ...
New study finds catch shares improve consistency, not health, of fisheries
11 hours ago |
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Catch share programs result in more consistent and predictable fisheries but do not necessarily improve ecological conditions, according to a new study published online this week by the journal Proceedings of the National ...
Physicists propose quantum entanglement for motion of microscopic objects
Dec 21, 2009 |
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Researchers at the California Institute of Technology (Caltech) have proposed a new paradigm that should allow scientists to observe quantum behavior in small mechanical systems.
Why newborn babies can't walk
Medicine & Health / Neuroscience
Dec 18, 2009 |
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(PhysOrg.com) -- The first steps of an infant is a real milestone in the development of all mammals including humans, but little is known about why some animals can walk soon after birth, while others need ...
Poisonous prehistoric 'raptor' discovered in China
Other Sciences / Archaeology & Fossils
Dec 21, 2009 |
4.9 / 5 (12) |
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(PhysOrg.com) -- A group of University of Kansas researchers working with Chinese colleagues have discovered a venomous, birdlike raptor that thrived some 128 million years ago in China. This is the first ...
Bacteria wouldn't opt for a swine flu shot
Dec 16, 2009 |
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Bacteria inhabited our planet for more than 4 billion years before humans showed up, and they'll probably outlive us by as many eons more. That suggests they may have something to teach us.
Chemical energy influences tiny vibrations of red blood cell membranes
Dec 21, 2009 |
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(PhysOrg.com) -- Much like a tightly wound drum, red blood cells are in perpetual vibration. Those vibrations help the cells maintain their characteristic flattened oval or disc shape, which is critical to ...
Depression saps endurance of the brain's reward circuitry
Medicine & Health / Neuroscience
Dec 21, 2009 |
4.5 / 5 (6) |
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A new study at the University of Wisconsin-Madison suggests that depressed patients are unable to sustain activity in brain areas related to positive emotion.
Foot binding and a biological approach to the study of Chinese culture
Other Sciences / Social Sciences
Dec 21, 2009 |
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(PhysOrg.com) -- Exaptation is a familiar concept to evolutionary biologists. It's the basic idea explaining that a trait can evolve because it starts serving a different function. Think of birds: at first, the most important ...
Bioengineered materials promote the growth of functional vasculature, new study shows
Dec 21, 2009 |
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Regenerative medicine therapies often require the growth of functional, stable blood vessels at the site of an injury. Using synthetic polymers called hydrogels, researchers at the Georgia Institute of Technology ...
Microcephaly genes associated with human brain size
Dec 21, 2009 |
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A group of Norwegian and American researchers have shown that common variations in genes associated with microcephaly - a neuro-developmental disorder in which brain size is dramatically reduced - may explain differences ...
