A new global-scale modeling study that takes into account nitrogen -- a key nutrient for plants -- estimates that carbon emissions from human activities on land were 40 percent higher in the 1990s than in studies that did not account for nitrogen. Plant regrowth -- and therefore carbon assimilation by plants -- is limited by...

Researchers at UT Southwestern Medical Center have found that alternative splicing -- a process that allows a single gene to code for multiple proteins -- appears to be a new potential target for anti-telomerase cancer therapy. Fuente : http://www.eurekalert.org/pub_releases/2013-04/usm...

Wild fire residue is washed out of the soil and transported to the sea by rivers. Fuente : http://www.eurekalert.org/pub_releases/2013-04/m-m...

Think Elephants International, a not-for-profit organization that strives to promote elephant conservation through scientific research, education programming and international collaborations, today announced its latest study, "Visual Cues Given by Humans are Not Sufficient for Asian Elephants (Elephas Maximus) to Find Hidden...

A monoclonal antibody targeting a protein known as SFPR2 has been shown by researchers at the University of North Carolina to inhibit tumor growth in pre-clinical models of breast cancer and angiosarcoma. Fuente : http://www.eurekalert.org/pub_releases/2013-04/uon...

Scientists at the US Department of Energy's Argonne National Laboratory have, for the first time, captured movies of nanoparticle self-assembly, giving researchers a new glimpse of an unusual material property. Fuente : http://www.eurekalert.org/pub_releases/2013-04/dnl...

A new genome-wide association study of more than 6,000 people has identified seven new genetic regions associated with pulmonary fibrosis. Researchers at National Jewish Health, the University of Colorado and several other institutions found a number of genes associated with host defense, cell-cell...

UC San Francisco scientists have discovered that muscle repair requires the action of two types of cells better known for causing inflammation and forming fat.  Fuente : http://www.eurekalert.org/pub_releases/2013-04/uoc...

A protein which is intimately involved in cancer-promoting cell signaling also keeps a key component of the signaling pathway tied down and inactive, a team led by scientists from the University of Texas MD Anderson Cancer Center reports this week in Nature Structural Molecular Biology. Fuente :...

Natural lubricants play an important role in health, including helping prevent osteoarthritis in joints. Much is still unknown about their role and function in other areas of the body. Researchers for the first time have discovered that the surface of the eye produces "lubricin," the same substance...

An estimated nine million people in the United State alone suffer from significant dry eye disorder. Researchers have shown that topical anakinra (Kineret; Amgen Inc.), a recombinant version of human IL-1Ra approved for treatment of rheumatoid arthritis, significantly reduced dry eye symptoms....

A new study sheds light on the relatively rare but occasionally recorded presence of white sharks in waters surrounding the Hawaiian Islands, and suggests a new method to help distinguish between white sharks and close relatives, such as mako sharks. Fuente :...

Numerous epidemiologic studies have shown that a diet high in salt is associated with an increased risk of gastric cancer. Now researchers have shown that high dietary salt combined with infection by the ulcer-causing bacterium Helicobacter pylori greatly increases the risk of cancer. Fuente :...

Although advances in agronomy, breeding, and biotechnology have dramatically increased corn grain yields, soil test values indicate that producers may not be supplying optimal nutrient levels. Moreover, many current nutrient recommendations, developed decades ago using outdated agronomic management...

People who participate in community gardening have a significantly lower BMIs —- as well as lower odds of being overweight or obese -— than do their non-gardening neighbors, according to a new study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/0...

An increase in gold nanoparticles can accelerate aging and wrinkling, slow wound healing and cause the onset of diabetes. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/M...

Un grupo de investigadores elabora un mapa del sistema de regulación que permite la correcta formación del organismo y está implicado en algunas enfermedades, como el cáncer ||| Fuente : http://feedproxy.google.com/~r/materia/noticias/~3...

A new study with college roommates shows that a particular style of thinking that makes people vulnerable to depression can actually "rub off" on others, increasing their symptoms of depression six months later. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...

Biocontrol programs use an invasive plant's natural enemies (insects and pathogens) to reduce its population. Most biocontrol programs combine many different enemies. Some combinations of enemy species can actually end up competing or interfering with each other, instead of attacking the weed. Fuente :...

A new report on potential effects of climate change uses existing observations and science-based expectations to identify how climate change could affect habitats, plants and animals within the sanctuary and adjacent coastal areas. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/M...

Científicos de la Universidad Politécnica de Valencia y del King's College de Londres (Reino Unido) han desarrollado una nueva forma de controlar la dirección de propagación de la luz guiada a un nivel sin precedentes. Sus resultados abren la puerta al control muy eficiente y a alta velocidad de la dirección de propagación de...

Científicos de la Universidad Politécnica de Valencia y del King's College London (Reino Unido) han desarrollado una nueva forma de controlar la dirección de propagación de la luz guiada a un nivel sin precedentes. Sus resultados abren la puerta al control muy eficiente y a alta velocidad de la...

Un equipo internacional, liderado desde el Centro de Investigación Ames de la NASA, ha descubierto cinco planetas orbitando la estrella Kepler-62. Los dos más exteriores son un poco más grandes que la Tierra y están en la zona habitable, por lo que podrían albergar agua líquida. Fuente :...

El casquete de hielo continental antártico surgió por primera vez durante el Oligoceno hace 33,6 millones de años, según demuestran los datos de una expedición internacional liderada por el Consejo Superior de Investigaciones Científicas. Fuente :...

Un equipo internacional de investigadores ha descubierto una señal en el sistema nervioso de los niños que identifica, a los cinco meses, el comienzo de la consciencia visual, es decir, la habilidad de ver y recordar las cosas vistas. El hallazgo se publica hoy en la edición digital de la revista...

Proyectos como Eurovegas sepultarán yacimientos arqueológicos, como ya ocurrió con el Parque Warner y la Terminal 4, pero esta vez sin que se llegue a conocer su existencia por culpa de una nueva ley en Madrid ||| Fuente : http://feedproxy.google.com/~r/materia/noticias/~3...

Según un estudio liderado por investigadores de la Universidad de Huelva, el Peñón de Gibraltar y el Parque Nacional de Doñana conservan evidencias de un “paisaje superviviente” de hace unos 30 a 50 mil años, que permite recrear el paisaje de grandes zonas costeras del mundo donde vivieron los...

Según un estudio liderado por investigadores de la Universidad de Huelva, el Peñón de Gibraltar y el Parque Nacional de Doñana conservan evidencias de un “paisaje superviviente” de hace unos 30 a 50 mil años, que permite recrear el paisaje de grandes zonas costeras del mundo donde vivieron los...

Científicos de la Universidad de Granada han patentado un nuevo tratamiento contra el acné que no crea resistencias bacterianas y carece de efectos secundarios. La formulación se aplica directamente sobre la piel de manera tópica y tiene como ingrediente principal una proteína cíclica de 70...