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Tags (9039) : science
La ciencia mola: fluidos no newtonianos, ¿sólidos o líquidos?
20/10/2015
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Niños y ciencia
En este quinto capítulo de ¡La Ciencia mola! de Tendencias21, nuestra colaboradora Graciela Aparicio nos mostrará qué son los fluidos no newtonianos y nos enseñará a fabricar uno para entender sus propiedades.
Hallan una proteína clave en el desarrollo del asma alérgica
15/10/2015
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SALUD
En el mundo hay más de 300 millones de personas con asma y una de sus variantes, el asma alérgica, es cada vez más común. Ahora, científicos alemanes han encontrado una proteína crucial para el desarrollo del asma alérgica: la Sindencán-4. El descubrimiento podría impulsar nuevas terapias que vayan directamente a la raíz del problema, afirman los investigadores.
Victoria López Rodas: Fue un privilegio conocer a Carl Sagan
07/10/2015
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Protagonistas
La doctora en veterinaria y catedrático de genética en la Facultad de Veterinaria de la Universidad Complutense de Madrid, Victoria López Rodas, habla sobre sus investigaciones y su trabajo en transferencia de tecnología. Entre sus investigaciones destaca el estudio del fitoplancton y de las cianobacterias, del que Carl Sagan se interesó por sus descubrimientos.
Fabricarán baterías digeribles que impulsen a píldoras inteligentes
24/09/2015
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INNOVACIÓN TECNOLÓGICA
Las "píldoras inteligentes" prometen resultar muy útiles en detección y aplicación de medicamentos dentro del organismo. Pero aún debe superarse el escollo de la seguridad, pues al ingerirlas pueden provocar problemas si sus baterías no se degradan bien. Un investigador de la Universidad de Carnegie Mellon (EEUU) propone ahora fabricar estas últimas con minerales de dieta o pigmentos de la piel para asegurar su salubridad.
Lengthening life of high capacity silicon electrodes in rechargeable lithium batteries with novel rubber-like coating
02/12/2014
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CIENCIA ON LINE
A new study will help researchers create longer-lasting, higher-capacity lithium rechargeable batteries, which are commonly used in consumer electronics. Researchers have shown how a coating that makes high capacity silicon electrodes more durable could lead to a replacement for lower-capacity...
Re-focusing investors' attention away from losses can reduce negative emotional response
02/12/2014
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CIENCIA ON LINE
Destracting investors helped lessen emotional responses to investment losses, researchers report at the conclusion of a recent study. "In terms of making investment choices, a higher level of distraction didn't matter," one author said. "However, while participants' choices weren't affected, their...
Fear and caring are what's at the core of divisive wolf debate
02/12/2014
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CIENCIA ON LINE
To hunt or not hunt: Wolves can't be quantified as simply as men vs. women, hunters vs. anti-hunters, Democrats vs. Republicans or city vs. rural. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/e...
Novel technique for gene insertion by genome editing
02/12/2014
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CIENCIA ON LINE
Using a novel gene knock-in technique, effective insertion of an exogenous gene was demonstrated in human cells and in animal models, including silkworms and frogs. This strategy universally enables gene knock-in not only in cultured cells, but also in various organisms. This technique will enhance...
55 percent of carbon in Amazonian indigenous territories and protected lands may be at risk
02/12/2014
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CIENCIA ON LINE
A new peer-reviewed study reveals the unprecedented amount of carbon stored within the nine-nation network of Amazonian indigenous territories and protected natural areas. The article suggests that protecting the vast amount of carbon stored above ground in the forests of indigenous and protected...
Cheaper private health care prices mean more Medicare spending
01/12/2014
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CIENCIA ON LINE
Doctors may be shifting health care services to Medicare when they stand to make money by doing so, though further study is required, researchers report. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/_...
Possible read head for quantum computers
01/12/2014
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CIENCIA ON LINE
Nitrogen-vacancy centers in diamonds could be used to construct vital components for quantum computers. But hitherto it has been impossible to read optically written information from such systems electronically. Using a graphene layer, a team of scientists has now implemented just such a read...
New method to determine surface properties at the nanoscale
01/12/2014
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CIENCIA ON LINE
As machines get smaller, knowing characteristics can make huge engineering differences. Engineers have now developed a method for characterizing the surface properties of materials at different temperatures at the nanoscale. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/7...
Prompt, appropriate medical care for dislocated shoulder injuries
01/12/2014
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CIENCIA ON LINE
Prompt and appropriate treatment of a dislocated shoulder -- when the head of the upper arm bone is completely knocked out of the shoulder socket -- can minimize risk for future dislocations as well as the effects of related bone, muscle and nerve injuries, according to a literature review....
Restrooms: Not as unhealthy as you might think
01/12/2014
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CIENCIA ON LINE
Microbial succession in a sterilized restroom begins with bacteria from the gut and the vagina, and is followed shortly by microbes from the skin. Restrooms are dominated by a stable community structure of skin and outdoor associated bacteria, with few pathogenic bacteria making them similar to...
Supplemental co-enzyme Q may prevent heart disease in some individuals
01/12/2014
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CIENCIA ON LINE
New research involving rats suggests that if you were born at a low birth weight, supplemental co-enzyme Q may lower your risk for heart disease. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/i...
How lungs protect themselves from infection
01/12/2014
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CIENCIA ON LINE
Scientists have taken an important step toward a new class of antibiotics aimed at stopping lung infections. They found that a protein found in large airways, called 'SPLUNC1,' binds to lipids critical to defending against bacterial and viral infections, as well as keeping lung tissue flexible...
Plant used in traditonal Chinese medicine may treat metabolic diseases and obesity
01/12/2014
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CIENCIA ON LINE
New research shows that a component found in in the plant, Glycyrrhiza uralensis, may inhibit the development of metabolic disorders by stopping the activation of NLRP3, a protein involved in the disease process. Specifically, the researchers identified isoliquiritigenin as having the ability to...
Revolutionizing genome engineering
01/12/2014
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CIENCIA ON LINE
Genome engineering with the RNA-guided CRISPR-Cas9 system in animals and plants is changing biology. It is easier to use and more efficient than other genetic engineering tools, thus it is already being applied in laboratories all over the world just a few years after its discovery. This rapid...
Duality in the human genome
01/12/2014
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CIENCIA ON LINE
Human genomes are extraordinarily individual -- a challenge for personalized medicine. Results of a new study show that most genes can occur in many different forms within a population: On average, about 250 different forms of each gene exist. The researchers found around four million different...
January-October 2014 temperatures highest on record
29/11/2014
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CIENCIA ON LINE
The global average temperature over land and ocean surfaces for January to October 2014 was the highest on record, according to the U.S. National Oceanic and Atmospheric Administration. It said October was the hottest since records began in 1880. Fuente :...
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