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







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Creating electricity with caged atoms - 22/09/2013

Clathrates are crystals consisting of tiny cages in which single atoms can be enclosed. These atoms significantly alter the material properties of the crystal. By trapping cerium atoms in a clathrate, scientists have created a material which has extremely strong thermoelectric properties. It can be...

Protein identified that regulates cellular trafficking, potential for anti-cancer therapy - 22/09/2013

Scientists have identified a new regulator for the intracellular trafficking of proteins between the endoplasmic reticulum and Golgi apparatus, which is a crucial process for maintaining homeostasis and prevention of human disease. The study provides a new avenue to investigate anti-cancer agents...

Calming fear during sleep - 22/09/2013

A fear memory was reduced in people by exposing them to the memory over and over again while they slept. It's the first time that emotional memory has been manipulated during sleep, report scientists. The finding potentially offers a new way to enhance the typical daytime treatment of phobias...

Formation of unusual ring of radiation around Earth explained - 22/09/2013

Since the discovery of the Van Allen radiation belts, scientists believed these belts consisted of two rings of highly charged particles. In February, scientists reported the discovery of a previously unknown third radiation ring -- a narrow ring that briefly circled the Earth for a month. Space...

Scientists closer to universal flu vaccine after pandemic 'natural experiment' - 22/09/2013

Scientists have moved closer to developing a universal flu vaccine after using the 2009 pandemic as a natural experiment to study why some people seem to resist severe illness. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/G...

A boost for cellular profiling - 22/09/2013

A team of researchers report a dramatically improved technique for analyzing the genes expressed within a single cell — a capability of relevance to everything from basic research to future cancer diagnostics. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/g...

Propofol discovery may aid development of new anesthetics - 22/09/2013

Researchers for the first time have identified the site where the widely used anesthetic drug propofol binds to receptors in the brain to sedate patients during surgery. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/y...

Demostrado matemáticamente el delicado equilibrio de los sistemas interconectados - 22/09/2013

Un estudio, en el que participa la Universidad Rovira i Virgili y publicado este domingo en la revista Nature, analiza matemáticamente las relaciones de las redes y sus efectos. Es la primera vez que se demuestra que los resultados tienen aplicabilidad global. Fuente :...

La mayoría de las exolunas serían inhabitables - 22/09/2013

La Universidad de Antioquia (Colombia) en asocio con la Universidad de McMaster (Canadá), exploran, por primera vez, cuál es la influencia de los campos magnéticos de las exolunas –satélites naturales que orbitan planetas por fuera de nuestro sistema solar- en sus condiciones para ser...

Una app se convierte en una guía turística que muestra la cultura gaditana con realidad aumentada - 22/09/2013

Una aplicación turística muestra a los visitantes de Cádiz toda la información de interés de la capital con la ayuda de la realidad aumentada. (Fuente: Historias de Luz) Fuente : http://noticiasdelaciencia.com/not/8283/una_app_se...

Why do you want to eat the baby? - 22/09/2013

What woman has not wanted to gobble up a baby placed in her arms, even if the baby is not hers? This reaction, which everyone has noticed or felt, could have biological underpinnings related to maternal functions. Fuente : http://www.eurekalert.org/pub_releases/2013-09/uom...

Chronic aggressive behavior in boys: Epigenetic sources? - 22/09/2013

Chronic aggressive behavior exhibited by some boys from disadvantaged families may be due to epigenetic changes during pregnancy and early childhood. Fuente : http://www.eurekalert.org/pub_releases/2013-09/uom...

Targeting memory T-cells in Type 1 diabetes - 22/09/2013

Encouraging results from the T1DAL study (Targeting effector memory T cells with alefacept in new onset type 1 diabetes) are published today in The Lancet Diabetes & Endocrinology. The T1DAL trial was designed to test whether alefacept would preserve pancreatic beta cell function in newly diagnosed...

The brain cannot be fooled by artificial sweeteners - 22/09/2013

Eating low-calorie sweetened products -- especially when hungry or exhausted -- may lead to a higher likelihood of seeking high calorie alternatives later, due to a newly discovered signal in the brain, suggests new research published today in The Journal of Physiology. Fuente :...

A boost for cellular profiling - 22/09/2013

A team of researchers affiliated with Ludwig Cancer Research and the Karolinska Institutet in Sweden report in the current issue of Nature Methods a dramatically improved technique for analyzing the genes expressed within a single cell -- a capability of relevance to everything from basic research...

Calming fear during sleep - 22/09/2013

A fear memory was reduced in people by exposing them to the memory over and over again while they slept. It's the first time that emotional memory has been manipulated during sleep, report scientists. The finding potentially offers a new way to enhance the typical daytime treatment of phobias...

UCLA scientists explain the formation of unusual ring of radiation in space - 22/09/2013

Since the discovery of the Van Allen radiation belts, scientists believed these belts consisted of two rings of highly charged particles. In February, scientists reported the discovery of a previously unknown third radiation ring -- a narrow ring that briefly circled the Earth for a month. UCLA...

USC scientists ID protein that regulates cellular trafficking, potential for anti-cancer therapy - 22/09/2013

USC scientists have identified a new regulator for the intracellular trafficking of proteins between the endoplasmic reticulum and Golgi apparatus, which is a crucial process for maintaining homeostasis and prevention of human disease. The study provides a new avenue to investigate anti-cancer...

Scientists closer to universal flu vaccine after pandemic 'natural experiment' - 22/09/2013

Scientists have moved closer to developing a universal flu vaccine after using the 2009 pandemic as a natural experiment to study why some people seem to resist severe illness. Fuente : http://www.eurekalert.org/pub_releases/2013-09/icl...

Creating electricity with caged atoms - 22/09/2013

Clathrates are crystals consisting of tiny cages in which single atoms can be enclosed. These atoms significantly alter the material properties of the crystal. By trapping cerium atoms in a clathrate, scientists at the Vienna University of Technology have created a material which has extremely...

Propofol discovery may help lead to development of new anaesthetics - 22/09/2013

New research on the most commonly used anaesthetic drug could help to unravel a long-standing mystery about how it induces a pain-free, sleep-like state. Following years of research, scientists have identified exactly how propofol acts at a molecular level. Having a more detailed picture of exactly...

Propofol discovery may aid development of new anesthetics - 22/09/2013

Researchers at Washington University School of Medicine in St. Louis and Imperial College London are the first to identify the site where the widely used anesthetic drug propofol binds to receptors in the brain to sedate patients during surgery. Fuente :...

Covert operations: Your brain digitally remastered for clarity of thought - 21/09/2013

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. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/r...

Stronger sexual impulses may explain why men cheat more than women - 21/09/2013

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://feeds.sciencedaily.com/~r/sciencedaily/~3/E...

Arctic sea ice minimum in 2013 is sixth lowest on record - 21/09/2013

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, scientists have reported. Analysis of satellite data by NSIDC and NASA showed that the sea ice extent shrunk to 1.97 million square miles (5.10...

The pursuit of hopefulness in entertainment media - 21/09/2013

Has a movie or TV show ever left you feeling happy or uplifted about your own life? Entertainment media provides a wealth of emotionally evocative content, but relatively little attention has been paid to the subject of media creating positive emotions, and specifically, hope. In a recent study,...

Los trastornos mentales causan el 17% de la discapacidad en el mundo - 21/09/2013

egún los investigadores, las grandes dimensiones de esta encuesta, la representatividad geográfica de las muestras, la evaluación exhaustiva y estandarizada de los trastornos, sus resultados en la salud y el uso de enfoques analíticos sofisticados ha permitido evaluar comparativamente la... Fuente...

The Pursuit of Hopefulness in Entertainment Media - 21/09/2013

Has a movie or TV show ever left you feeling happy or uplifted about your own life? Entertainment media provides a wealth of emotionally evocative content, but relatively little attention has been paid to the subject of media creating positive emotions, and specifically, hope. In a recent study...

Revelado el mecanismo de la proteína beta amiloide que causa alzhéimer en ratones - 21/09/2013

Científicos de la Universidad de Stanford (EE UU) han liderado una investigación que demuestra cómo un fragmento de la proteína beta amiloide, implicada en la enfermedad de Alzheimer, comienza a destruir las sinapsis antes de formar las placas seniles que conducen a la muerte de células... Fuente :...

Organic waste transformed into industrial prime material - 21/09/2013

Researchers at the Iberoamerican University (IBERO) in Mexico City, look to consolidate a pilot biorefinery that will use the waste of various fruits, vegetables, flowers and plants produced in urban and rural areas, to transform them into fuels and high value products. In that sense, various...
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