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







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Blocking an inflammation pathway prevents cardiac fibrosis, study suggests - 22/03/2013

New research shows that blocking an enzyme that promotes inflammation can prevent the tissue damage following a heart attack that often leads to heart failure. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/-...

Immune-cell therapy could strengthen promising melanoma treatment - 22/03/2013

Scientists have used newly developed nanotechnology chips (multidimensional and multiplexed immune monitoring assays) to successfully monitor T cells genetically engineered to attack melanoma. They have discovered that the T cells change over time when returned to patients. These results will help...

Did evolution give us inflammatory disease? - 22/03/2013

Researchers demonstrate that some variants in our genes which could put a person at risk for inflammatory diseases -- such as multiple sclerosis, Crohn's disease or rheumatoid arthritis -- have been the target of natural selection over the course of human history. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Z...

Spatial memory: Mapping blank spots in the cheeseboard maze - 22/03/2013

During learning, novel information is transformed into memory through the processing and encoding of information in neural circuits. Scientists have now uncovered a novel role for inhibitory interneurons in the rat hippocampus during the formation of spatial memory. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/5...

NASA's Kennedy Space Center Operations helps launch pad of the future take shape - 22/03/2013

The launch pad of the future is taking shape at NASA's Kennedy Space Center as the Ground Systems Development and Operations (GSDO) Program office, along with Center Operations, continues with upgrades and modifications to Launch Pad 39B, where the agency's Space Launch System (SLS) will lift off with the Orion spacecraft atop...

Las bibliotecas deben asumir un papel social para sobrevivir en la era de internet - 22/03/2013

Buscadores como Google, Bing o Yahoo están asumiendo algunas de las funciones de las bibliotecas como lugares donde se puede recabar información. "Estos centros están perdiendo su papel tradicional y deberían reinventarse buscando una orientación más social", según señalan en una carta publicada en...

Men and women get sick in different ways: Developing gender-specific medicine is a major challenge of the future - 22/03/2013

Recent research in laboratory medicine has revealed crucial differences between men and women with regard to cardiovascular illness, cancer, liver disease, osteoporosis, and in the area of pharmacology. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Z...

For the first time Iberian lynx embryos are collected and preserved - 22/03/2013

A pioneering procedure in felines allows the collection of biological material from Iberian lynx females before castration. The preserved biological material of the lynxes will be used in future conservation breeding programs. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/D...

How organic magnets grow in a thin film - 22/03/2013

Development of organic single molecule magnets opens a great many of applications for magnetic materials and new memory technologies. Organic magnets are lighter, more flexible and less energy intensive in production than conventional magnets. Scientists have now established a first step on the road to new applications for...

Una sucesión de erupciones volcánicas masivas propició la aparición de los dinosaurios - 22/03/2013

Hace más de 200 millones de años, una extinción aniquiló el 76 % de las especies marinas y terrestres, lo que marcó el final del periodo Triásico y el inicio del Jurásico. Este evento devastador allanó el camino para que los dinosaurios dominaran la Tierra durante los siguientes 135 millones años....

Nace en Baleares un nuevo sistema de observación y predicción costero - 22/03/2013

El Sistema de Observación y Predicción Costero de las Islas Baleares, ‘ICTS SOCIB’, ha creado una nueva técnica que permitirá observar e investigar el océano en tiempo real. Se trata de una red de infraestructuras y plataformas marinas de observación y predicción integradas y abiertas a la...

El calentamiento podría convertir el Ártico en una fuente de CO2 - 22/03/2013

El aumento de la temperatura altera el metabolismo del plancton del Océano Glaciar Ártico, según dos estudios publicados en la revista Biogeosciences que recogen los resultados de ocho campañas oceanográficas en condiciones extremas y un experimento a gran escala Fuente :...

A tiros con la ‘rata’ gigante sudamericana - 22/03/2013

Las administraciones españolas luchan contra el voraz coipú, un enorme roedor originario de la Patagonia considerado por la UE “una de las peores especies invasoras” del continente ||| Fuente : http://feedproxy.google.com/~r/materia/noticias/~3...

'Cambio de marcha' en la comprensión de la función celular - 22/03/2013

Investigadores del Institut de Bioenginyeria de Catalunya han descubierto cómo las células del cuerpo humano usan dos moléculas, la talina y la alfa-actinina, para conectar y transmitir fuerzas a lo que las rodea, es decir, para comunicarse con su entorno. Este descubrimiento representa un paso...

Certain bacteria suppress production of toxic shock toxin: Probiotic potential looms - 22/03/2013

Certain Streptococci increase their production of toxic shock syndrome toxin 1, sometimes to potentially dangerous levels, when aerobic bacteria are present in the vagina. But scientists from the University of Western Ontario have discovered certain strains of lactobacillus bacteria are capable of dampening production of that...

Study shows resources giveaway in Latin America; Outdated model tramples human rights, environment - 22/03/2013

A new study reveals that governments in Latin America have returned to natural resources extraction to fuel development -- while paying scant attention to the impact mining, oil exploration and other activities have on the environment or on the people who own the land. Fuente :...

Making axons branch and grow to help nerve regeneration after injury - 22/03/2013

One molecule makes nerve cells grow longer. Another one makes them grow branches. These new experimental manipulations have taken researchers a step closer to understanding how nerve cells are repaired at their farthest reaches after injury. The research was recently published in the Journal of Neuroscience. Fuente :...

It all hinges on the bottom line - 22/03/2013

Determining the financial health of a company is no easy task. But new research from Concordia University's John Molson School of Business, recently published in the Journal of Corporate Finance, demonstrates that a company that revises its previous financial statements is more likely to have been poorly governed. Fuente :...

Computer simulations yield clues to how cells interact with surroundings - 22/03/2013

Berkeley Lab scientists have developed a computer model of a protein that helps cells interact with their surroundings. Like its biological counterpart, the virtual integrin snippet is about twenty nanometers long. It also responds to changes in energy and other stimuli just as integrins do in real life. The result is a new...

Huge and widespread volcanic eruptions triggered the end-Triassic extinction - 22/03/2013

Some 200 million years ago, an increase in atmospheric CO2 caused acidification of the oceans and global warming that killed off 76 percent of marine and terrestrial species on Earth. Fuente : http://www.eurekalert.org/pub_releases/2013-03/mio...

Alterations in brain activity in children at risk of schizophrenia predate onset of symptoms - 22/03/2013

Research from the University of North Carolina has shown that children at risk of developing schizophrenia have brains that function differently than those not at risk. Fuente : http://www.eurekalert.org/pub_releases/2013-03/uon...

Malaria drug treatment breakthrough - 22/03/2013

An international study, involving researchers from Griffith University's Eskitis Institute, hasdiscovered a molecule which could form the basis of powerful new anti-malaria drugs. Fuente : http://www.eurekalert.org/pub_releases/2013-03/gu-...

Acoustic monitoring of Atlantic cod reveals clues to spawning behavior - 22/03/2013

For decades researchers have recorded sounds from whales and other marine mammals, using a variety of methods including passive acoustic monitoring to better understand how these animals use sound to interact with each other and with the environment. Now, for the first time, researchers report using this technology to record...

Genetic analysis saves major apple-producing region of Washington state - 22/03/2013

A genetic analysis by University of Notre Dame researchers saved a major apple-producing region of Washington state. Fuente : http://www.eurekalert.org/pub_releases/2013-03/uon...

Smoking affects fracture healing - 22/03/2013

In a new study presented today at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons, researchers reviewed existing literature on smoking and the healing of fractures involving long bones (bones that are longer than they are wide). Fuente :...

Hip replacement reduces heart failure, depression and diabetes risk - 22/03/2013

In addition to improving life quality and diminishing pain, total hip replacement is associated with reduced mortality, heart failure, depression and diabetes rates in Medicare patients with osteoarthritis, according to a new study presented today at the 2013 Annual Meeting of the American Academy...

Study highlights variations in spinal component costs - 22/03/2013

In a study, presented today at the 2013 Annual Meeting of the American Academy of Orthopaedic Surgeons, researchers obtained and compared the hospital purchasing records from 45 academic medical centers on the unit costs and volume of spinal products -- pedicle screws, anterior cervical plates and...

Additional research must be done to ensure safety of pit latrines, new study says - 22/03/2013

Pit latrines are one of the most common human excreta disposal systems globally, and their use is on the rise as countries aim to meet the sanitation-related target of the Millennium Development Goals. Strong evidence supports the use of these basic toilets as a way to improve human health....

Study finds long nerve grafts restore function in patients with brachial plexus injury - 22/03/2013

A study by researchers at Hospital for Special Surgery in New York City challenges a widely held belief that long nerve grafts do poorly in adults with an axillary nerve injury. Investigators found that the outcomes of long nerve grafts were comparable to those of modern nerve transfers. Fuente :...

Implantable Telescope Lens to Treat Macular Degeneration Available at Johns Hopkins - 22/03/2013

Approximately two million Americans who have the advanced form of AMD, which affects the region of the retina responsible for central, detailed vision, and is the leading cause of irreversible vision loss and legal blindness in people over the age of 65. Now, a relatively new device, essentially an...
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