Tendencias 21. Ciencia, tecnología, sociedad y cultura
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Tendencias 21







CIENCIA ON LINE

- 20/09/2013

Fuente : http://noticiasdelaciencia.com/not/8271//...

Comienza la campaña de lanzamiento de Swarm - 20/09/2013

Acaba de llegar en perfecto estado al cosmódromo de Plesetsk, en Rusia, el primero de los tres satélites Swarm, de la ESA, cuyo lanzamiento está previsto para el próximo 14 de noviembre. Esta nueva misión estudiará uno de los fenómenos más misteriosos de nuestro planeta: su... Fuente :...

"Azul y verde sobre negro", un documental de la ASECIC - 20/09/2013

Artículo, del blog El p@to científico, que recomendamos por su interés.  Desde hace poco más de un año, los vecinos de As Pontes, municipio de A Coruña, España, disfrutan de un entorno natural de gran valor ambiental.  Y esta vez, ha sido la mano del hombre quien ha hecho posible el... Fuente :...

NASA HS3 mission reveals Tropical Storm Humberto's hybrid core - 20/09/2013

NASA's Global Hawk 872 flew over Tropical Storm Humberto on Sept. 16 and 17 after it was reborn from remnants of its earlier life cycle. Fuente : http://www.eurekalert.org/pub_releases/2013-09/nsf...

UC Davis researchers find Neandertals, not modern humans, made first bone tools - 20/09/2013

A UC Davis student's discovery in a lab helped researchers determine that Neandertals, not modern humans, made first bone tools. Fuente : http://www.eurekalert.org/pub_releases/2013-09/uoc...

NASA sees remnants of Hurricane Manuel soaking northern Mexico, Texas - 20/09/2013

Two NASA satellites observed Hurricane Manuel as it made landfall in northwestern Mexico and brought rainfall into southwestern Texas. Fuente : http://www.eurekalert.org/pub_releases/2013-09/nsf...

NASA sees super typhoon affecting Philippines and Taiwan, headed to China - 20/09/2013

The most powerful typhoon of 2013 (Usagi) was passing between northern Philippines and southern Taiwan on Sept. 19. Fuente : http://www.eurekalert.org/pub_releases/2013-09/nsf...

Prostacyclin analogs and PDE 5 inhibitors synergistically stimulate ATP release from human RBCs - 20/09/2013

Prostacyclin (PGI2) and phosphodiesterase 5 (PDE5) inhibitors are vasodilators used in the treatment of pulmonary arterial hypertension (PAH). Although these drugs stimulate vascular dilation directly, erythrocytes also express the PGI2 receptor (IPR) and contain PDE5. We determined that PDE5...

Followers' actions affect organization's leadership capacity Wayne State researcher finds - 20/09/2013

Members of an educational organization contribute to its leadership and can blend personal and social needs to help leaders encourage cooperation, a Wayne State University researcher has found. Fuente : http://www.eurekalert.org/pub_releases/2013-09/wsu...

TRMM satellite sees system 98W organizing near Guam, Marianas - 20/09/2013

NASA's TRMM satellite data revealed heavy rainfall and banding of thunderstorms around the southern quadrant of System 98W in the northwestern Pacific near Guam and the Marianas Islands. Fuente : http://www.eurekalert.org/pub_releases/2013-09/nsf...

Covert operations: Your brain digitally remastered for clarity of thought - 20/09/2013

With advances in neurofeedback techniques, the signal-to-noise ratio of the brain activity underlying our thoughts can be remastered, according to a recent discovery in the Proceedings of the National Academy of Sciences by a research team led by Stephen LaConte of the Virginia Tech Carilion...

Stronger sexual impulses may explain why men cheat more than women, study reveals - 20/09/2013

A recently published study strongly suggests men succumb to sexual temptations more than women -- for example, cheating on a partner -- because they experience strong sexual impulses, not because they have weak self-control. Fuente : http://www.eurekalert.org/pub_releases/2013-09/uot...

Arctic sea ice minimum in 2013 is sixth lowest on record - 20/09/2013

After an unusually cold summer in the northernmost latitudes, Arctic sea ice appears to have reached its annual minimum summer extent for 2013 on Sept. 13, the NASA-supported National Snow and Ice Data Center (NSIDC) at the University of Colorado in Boulder has reported. Analysis of satellite data...

Geoscience Workforce Currents #75 and #76 - 20/09/2013

Over a 13-month period participants were polled on questions related to how they engaged these entities and what impact a workshop had on their professional development. Fuente : http://www.eurekalert.org/pub_releases/2013-09/agi...

Pioneering black carbon researcher receives UN 'Champion of the Earth' award - 20/09/2013

Veerabhadran Ramanathan, a distinguished professor of climate and atmospheric sciences at Scripps Institution of Oceanography, UC San Diego, whose landmark research showed that cutting emissions of black carbon and other short lived climate pollutants can significantly lessen the impacts of...

Mayo Clinic Researchers Identify Biomarker for Smoker’s Lung Cancer - 19/09/2013

Mayo Clinic researchers have shown that a specific protein pair may be a successful prognostic biomarker for identifying smoking-related lung cancers. The protein — ASCL1 — is associated with increased expression of the RET oncogene, a particular cancer-causing gene called RET. The findings appear in the online issue of the...

Kingston University fashion students join forces with iconic British heritage design brand to lift lid on new paint colours - 19/09/2013

The results of months of detailed research and carefully considered craftsmanship undertaken by MA Fashion students from London's Kingston University have finally burst on to the catwalk. The students have unveiled nine looks inspired by a new range of rich, pigment-heavy paints launched by exclusive paint and wallpaper...

SfN Awarded $525,000 to Create Latin American and Caribbean Neuroscience Training Program - 19/09/2013

The Society for Neuroscience has been awarded $525,000 from The Grass Foundation to create a Latin American Neuroscience Training Program. The five-year initiative will serve hundreds of promising young regional scientists, providing knowledge, networking, and tools to help them advance in their careers and contribute to the...

Geologists simulate deep earthquakes in lab - 19/09/2013

Geologists have shown how deep earthquakes can be simulated in the laboratory. The experiments were performed using a new type of apparatus that uses synchrotron X-rays. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/1...

'Cascade of events' caused sudden explosion of animal life - 19/09/2013

The explosion of animal life on Earth around 520 million years ago was the result of a combination of interlinked factors rather than a single underlying cause, according to a new study. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/x...

Worm research: Right combination of sugars regulates brain development - 19/09/2013

If the development of our nervous system is disturbed, we risk developing serious neurological diseases, impairing our sensory systems, movement control or cognitive functions. This is true for all organisms with a well-developed nervous system, from human to worm. New research reveals how a tiny molecule called mir-79...

Groundbreaking pain research - 19/09/2013

The bodies of mammals, including humans, respond to injury by releasing endogenous opioids -- compounds that mitigate acute pain. A team of researchers has uncovered groundbreaking new information about how the body responds to traumatic injury with the development of a surprisingly long-lasting opioid mechanism of natural...

First real-time detector for IV drugs may help eliminate medical errors - 19/09/2013

Today, computerized smart systems can deliver drugs intravenously in exact volumes to hospital patients. However, these systems cannot recognize which medications are in the tubing, nor can they determine the concentration of the drug in the tubing. This lack of precise information can lead to medication errors with serious...

Clues to growth of colossus in Coma cluster of galaxies - 19/09/2013

Astronomers have discovered enormous arms of hot gas in the Coma cluster of galaxies. These features, which span at least half a million light years, provide insight into how the Coma cluster has grown through mergers of smaller groups and clusters of galaxies to become one of the largest structures in the Universe held...

Seismologists puzzle over largest deep earthquake ever recorded - 19/09/2013

A magnitude 8.3 earthquake that struck deep beneath the Sea of Okhotsk on May 24, 2013, has left seismologists struggling to explain how it happened. At a depth of about 609 kilometers, the intense pressure on the fault should inhibit the kind of rupture that took place. Fuente :...

Scientists reveal how beta-amyloid may cause Alzheimer's - 19/09/2013

Scientists have shown how a protein fragment known as beta-amyloid, strongly implicated in Alzheimer's disease, begins destroying synapses before it clumps into plaques that lead to nerve cell death. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/3...

Circadian clock is key to firing up cell's furnace - 19/09/2013

Each of our cells has an energy furnace, and it is called a mitochondrion. A research team now has identified a new mode of timekeeping that involves priming the cell's furnace to properly use stored fuel when we are not eating. The interdisciplinary team has identified the "match" and "flint" responsible for lighting this tiny...

Long-term effects of bariatric surgery in patients with type 2 diabetes - 19/09/2013

Overweight patients with type 2 diabetes continue to experience the benefits of bariatric surgery up to nine years after the procedure, according to new research. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/k...

Revelado el mecanismo de la proteína beta amiloide que causa alzhéimer en ratones - 19/09/2013

Un grupo internacional de investigadores ha identificado un receptor en el cerebro de ratón, conocido como PirB, que se une al péptido beta amiloide –asociado con la enfermedad de Alzheimer– causando defectos neuronales. El estudio sugiere que el equivalente humano, el receptor LilrB2, podría ser...

El terremoto profundo del mar de Okhotsk en Rusia fue el más potente registrado hasta la fecha - 19/09/2013

Investigadores estadounidenses han determinado que el seísmo ocurrido en el fondo del Pacífico, y registrado en todo el mundo en mayo de 2013, emitió una energía 36 veces superior a la liberada por la bomba atómica de Hiroshima. Este fenómeno produjo una grieta de 180 kilómetros de largo. Fuente :...
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