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Latest Proceedings of the National Academy of Sciences Stories

2012-09-19 16:54:50

Positive results shown for cancer, Alzheimer´s and obesity drugs Nanoparticles have shown great promise in the targeted delivery of drugs to cells, but researchers at the University of Georgia have refined the drug delivery process further by using nanoparticles to deliver drugs to a specific organelle within cells. By targeting mitochondria, often called "the powerhouse of cells," the researchers increased the effectiveness of mitochondria-acting therapeutics used to treat cancer,...

2012-09-04 10:49:44

You already know it's hard to balance your checkbook while simultaneously reflecting on your past. Now, investigators at the Stanford University School of Medicine – having done the equivalent of wire-tapping a hard-to-reach region of the brain – can tell us how this impasse arises. The researchers showed that groups of nerve cells in a structure called the posterior medial cortex, or PMC, are strongly activated during a recall task such as trying to remember whether you had...

2012-08-21 23:30:56

Discovery could lead to therapies for this condition, and a better understanding of how genetic mutations in the nervous system cause movement disorders in other parts of the body with a long term view to encouraging the re-growth of damaged cells A research team from King's College London and the University of Exeter Medical School has identified how a genetic mutation acts during the development of nerves responsible for controlling eye muscles, resulting in movement disorders such as...

2012-08-21 01:25:21

A new study suggests that a polyclonal antibody that blocks follicle-stimulating hormone (FSH) in mice without ovaries might offer a more effective way to prevent or arrest osteoporosis than currently available treatments. The study used a mouse model of menopause to show that an injection of a polyclonal antipeptide antibody enhances bone regeneration by simultaneously slowing bone destruction and building bone, say researchers at the Mount Sinai School of Medicine, New York. In addition,...

2012-08-21 00:26:39

Scientists have discovered that a space inside a special type of carbon molecule can be used to imprison other smaller molecules such as hydrogen or water. The nano-meter sized cavity of the hollow spherical C60 Buckminsterfullerene – or bucky ball – effectively creates a 'nanolaboratory', allowing detailed study of the quantum mechanical principles that determine the motion of the caged molecule, including the mysterious wave-like behaviour that is a fundamental property of...

2012-08-13 14:50:23

If a hurricane's path carries it over large areas of fresh water, it will potentially intensify 50 percent faster than those that do not pass over such regions, meaning it has greater potential to become a stronger storm and be more devastating, according to a study co-written by a group of researchers at Texas A&M University. Ping Chang, professor of oceanography and atmospheric sciences and director of the Texas Center for Climate Studies, along with his former student, Karthik...

2012-08-07 10:19:21

The study of muscular system protein myostatin has been of great interest to researchers as a potential therapeutic target for people with muscular disorders. Although much is known about how myostatin affects muscle growth, there has been disagreement about what types of muscle cells it acts upon. New research from a team including Carnegie's Chen-Ming Fan and Christoph Lepper narrows down the field to one likely type of cell. Their work is published the week of August 6 by Proceedings of...

2012-08-07 10:17:50

University of Kentucky researchers, led by Dr. Jayakrishna Ambati, have made an exciting finding in the "dry" form of age-related macular degeneration known as geographic atrophy (GA). GA is an untreatable condition that causes blindness in millions of individuals due to death of retinal pigmented epithelial cells. The paper, "ERK1/2 Activation is a Therapeutic Target in Age-Related Macular Degeneration" appears in the current online issue of the premier journal Proceedings of the National...

Eyes In The Sky
2012-07-11 13:12:17

UI researchers develop technique to help pollution forecasters see past clouds Until now, scientists who study air pollution using satellite imagery have been limited by weather. Clouds, in particular, provide much less information than a sunny day. University of Iowa scientists have created a technique to help satellites "see" through the clouds and better estimate the concentration of pollutants, such as soot. The finding is important, because, like GPS systems, clouds block...

2012-07-10 10:27:29

Diels and Alder won the Nobel; now UCLA's Kendall Houk makes the movie In 1928, chemists Otto Diels and Kurt Alder first documented diene synthesis, a chemical reaction important for synthesizing many polymers, alkaloids and steroids. Their work on this mechanism, which came to be known as the Diels—Alder reaction, won them the 1950 Nobel Prize in chemistry. Since then, the iconic reaction has become the most commonly used and studied mechanism in organic chemistry. But what...


Latest Proceedings of the National Academy of Sciences Reference Libraries

Proceedings of the National Academy of Sciences
2012-05-29 11:19:42

The Proceedings of the National Academy of Sciences of the United States of America (PNAS) is a peer-reviewed scientific journal established in 1914 as the official journal of the US National Academy of Sciences. The first managing editor of the journal was mathematician Edwin Bidwell Wilson. As of May 2012, the editor-in-chief is Inder M. Verma. PNAS is published weekly in print, and daily online in PNAS Early Edition. The first issue of PNAS was published in 1915, and the journal...

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Word of the Day
ramage
  • Boughs or branches.
  • Warbling of birds in trees.
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