ScienceDaily Top Science Headlines
for Sunday, November 29, 2009
Welcome to another edition of ScienceDaily's email newsletter. You can change your subscription options or unsubscribe at any time.
'Glow-in-the-dark' red blood cells made from human stem cells (November 29, 2009) -- Stem cell scientists have modified a human embryonic stem cell (hESC) line to glow red when the stem cells become red blood cells. The modified hESC line, ErythRED, represents a major step forward to the eventual aim of generating mature, fully functional red blood cells from human embryonic stem cells. ... > full story
Forming new brain cells: Key regulatory peptide discovered (November 29, 2009) -- The generation of new nerve cells in the brain is regulated by a peptide known as C3a, which directly affects the stem cells' maturation into nerve cells and is also important for the migration of new nerve cells through the brain tissue. ... > full story
Oceanic crust formation is dynamic after all (November 29, 2009) -- Earth scientists have found strong evidence that the geological processes that lead to the formation of oceanic crust are not as uniformly passive as believed. They found centers of dynamic upwelling in the shallow mantle beneath spreading centers on the seafloor. ... > full story
Measuring and modeling blood flow in malaria (November 29, 2009) -- When people have malaria, they are infected with Plasmodium parasites, which enter the body from the saliva of a mosquito, infect cells in the liver, and then spread to red blood cells. Inside the blood cells, the parasites replicate and also begin to expose adhesive proteins on the cell surface that change the physical nature of the cells in the bloodstream. ... > full story
New nanocrystalline diamond probes overcome wear (November 29, 2009) -- Researchers have developed, characterized, and modeled a new kind of probe used in atomic force microscopy, which images, measures, and manipulates matter at the nanoscale. Using diamond, researchers made a much more durable probe than the commercially available silicon nitride probes, which are typically used in AFM to gather information from a material, but can wear down after several uses. ... > full story
Motivational 'women-only' cardiac rehab improves symptoms of depression (November 29, 2009) -- Women who participated in a motivational cardiac rehab program designed for women experienced less symptoms of depression. The positive impact of the women-centered program remained six months after the 12-week study ended. Other research shows that positive emotions in men and women may protect from heart disease. ... > full story
Biological basis of 'bacterial immune system' discovered (November 28, 2009) -- Scientists have discovered how the bacterial immune system works, and the finding could lead to new classes of targeted antibiotics, new tools to study gene function in microorganisms and more stable bacterial cultures used by food and biotechnology industries to make products such as yogurt and cheese. ... > full story
New device implanted by surgeons help paralyzed patients breathe easier (November 28, 2009) -- Physicians will soon begin implanting a new device designed to improve breathing in patients with upper spinal-cord injuries or other diseases that keep them from breathing independently. ... > full story
Fruit fly sperm makes females do housework after sex (November 28, 2009) -- The sperm of male fruit flies are coated with a chemical 'sex peptide' which inhibits the female's usual afternoon siesta and compels her into an intense period of foraging activity. ... > full story
Bell's palsy: Study calls for rethink of cause and treatment (November 28, 2009) -- Drugs widely prescribed to treat facial paralysis in Bell's palsy are ineffective and are based on false notions of the cause of the condition, according to researchers. They say research must now focus on discovering other potential causes and treatments. ... > full story
Nuclear waste reduction: Polymers designed to mop up radioactive isotopes (November 28, 2009) -- Nuclear power could solve our energy problems but it has rather nasty by-products: radioactive waste. Not only the disposal of the old core rods but also reactor operation results in a large amount of low-level waste, especially contaminated cooling water. Scientists have now developed a new method to reduce the amount of this radioactive waste considerably. They use small beads consisting of a special polymer which “fishes” the radioactivity out of the water. ... > full story
Dispensing prescription drugs in 3-month supplies reduces drug costs by a third (November 28, 2009) -- Purchasing prescription drugs in a three-month supply rather than a one-month supply has long been regarded as a way to save money. New research quantifies the savings for the first time. ... > full story
Copyright 1995-2008 © ScienceDaily LLC. All rights reserved. Terms of use.
|
 To update/change your account click here  |
No comments:
Post a Comment