HIV infection among non-injecting drug users doubled over the last two decades, a study has found. HIV and its transmission has long been associated with injecting drug use, where hypodermic syringes are used to administer illicit drugs. Now, a newly reported study shows that HIV infection among...

New evidence suggests heinous behavior played out in a virtual environment can lead to players' increased sensitivity toward the moral codes they violated. The current study found such guilt can lead players to be more sensitive to the moral issues they violated during game play. Other studies have...

The brains of Alzheimer's mice treated with the compound RU-505 showed less inflammation and improved blood flow than those of untreated mice. The treated mice also performed better on memory tests, researchers report. For more than a decade, potential Alzheimer's drugs have targeted amyloid-²,...

Un proverbio africano dice que cada mujer que da a luz tiene un pie en la tumba. Por desgracia, el refrán tiene vigencia, y en especial en el contexto de la pandemia del sida (síndrome de inmunodeficiencia adquirida) en este continente. A pesar de los grandes avances en la prevención de la transmisión del VIH […]Según un...

Researchers have given science a new and unprecedented 3-D view of one of the most important receptors in the brain -- a receptor that allows us to learn and remember, and whose dysfunction is involved in a wide range of neurological diseases and conditions, including Alzheimer's, Parkinson's,...

Some cancer patients with aggressive tumors may benefit from a class of anti-inflammatory drugs used to treat rheumatoid arthritis, new research suggests. Studying triple-negative breast cancer, researchers found that some aggressive tumors rely on an antiviral pathway that appears to drive...

Excessive alcohol use accounts for one in 10 deaths among working-age adults ages 20-64 years in the United States, according to a new report. Excessive alcohol use led to approximately 88,000 deaths per year from 2006 to 2010, and shortened the lives of those who died by about 30 years. These...

Scientists have successfully modified the precursor to one of the drugs used to treat tuberculosis, an important first step toward new drugs that can transcend antibiotic resistance issues. In 1993, resurging levels of tuberculosis due to this antibiotic resistance led the World Health Organization...

In quantum physics, momentum and position are an example of conjugate variables. This means they are connected by Heisenberg's Uncertainty Principle, which says that both quantities cannot be simultaneously measured precisely. Recently, researchers have been developing novel techniques, such as...

Humans have a well-documented tendency to see winning and losing streaks in situations that, in fact, are random. But scientists disagree about whether the “hot-hand bias” is a cultural artifact picked up in childhood or a predisposition deeply ingrained in the structure of our cognitive architecture. Fuente :...

Los esfuerzos del Caribe de garantizar su seguridad alimentaria están en riesgo porque los agricultores no logran producir la cantidad necesaria de alimentos básicos, debido a la severa sequía que atraviesa la región a raíz del cambio climático. Pero los científicos tratan de afrontar la situación creando una variedad de...

Activistas en Moscú protestaron contra la “tortura” a la que el sistema de justicia penal somete a los consumidores de drogas en Rusia, en ocasión del Día Internacional de la Lucha contra el Uso Indebido y el Tráfico Ilícito de Drogas el jueves 26. Nadezhda Tolokonnikova y Maria Alyokhina, dos de...

Although planning for Everglades restoration projects has advanced considerably over the past two years, financial, procedural, and policy constraints have impeded project implementation, says a new congressionally mandated report. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/o...

Climate change is predicted to have major impacts on the many species that call our rocky shorelines home. Indeed, species living in these intertidal habitats, which spend half their day exposed to air and the other half submerged by water, may be subjected to a double whammy as both air and water temperatures rise. Given the...

A phenomenological study offers detailed insights into homeless, alcohol-dependent patients often stigmatized by the public and policymakers as drains on the health care system, showing the constellation of reasons they are incapable of escaping social circumstances that perpetuate and exacerbate their problems. Fuente :...

A small, drab and highly inconspicuous moth has been flitting nameless about its special niche among the middle elevations of one of the world's oldest mountain ranges, the southern Appalachian Mountains in North America. A team of American scientists has now identified this new to science species as Cherokeea attakullakulla....

El nuevo marco legal en México para la industria petrolera no profundiza el control del uso de químicos nocivos en la extracción de los hidrocarburos no convencionales, lo que hace temer a ambientalistas y expertos sobre el incremento de su consumo en una industria en apertura al capital privado....

Researchers from University of Warwick and Monash University have provided new evidence that may prove the existence of gravitational waves, thanks to precise measurements of a rapidly rotating neutron star: one of the smallest, densest stars in the universe. Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

A high-fructose, high-fat diet can cause harmful effects to the livers of adult rats, according to new research published today [27 June] in Experimental Physiology, providing new insight into the effects of adding fructose to a Western diet high in fat. Fuente : http://www.alphagalileo.org/ViewItem.aspx?ItemId=1...

Studies have shown that smokers, in addition to exposing their lungs to harmful toxins, often eat less fruits and vegetables than non-smokers. Given the role of fruit and vegetable based antioxidants in improving respiratory health and the difficulty of achieving lasting dietary change, researchers hypothesized that powdered...

Un equipo de físicos españoles y austríacos ha logrado codificar un bit cuántico (qubit) en estados entrelazados de varias partículas y, por primera vez, realizar con él computaciones cuánticas robustas y resistentes. El registro cuántico, de siete átomos, podría servir como módulo básico para un...

Un equipo de físicos españoles y austríacos ha logrado codificar un bit cuántico (qubit) en estados entrelazados de varias partículas y, por primera vez, realizar computaciones sencillas en él. El registro cuántico de siete componentes o 7-qbits podría servir como módulo básico para un ordenador cuántico con corrección de todo...

La isla canaria de El Hierro se ha convertido hoy en la primera isla de todo el mundo plenamente capaz de autoabastecerse a partir de fuentes de energía renovables, tras la inauguración de la central hidroeléctrica Gorona del Viento en la isla que está declarada en su totalidad Reserva de la Biosfera. Fuente :...

La Agencia Europea del Espacio selecciona la misión Athena para su lanzamiento en 2028. Este gigantesco observatorio de rayos X fue propuesto por un equipo co-liderado por investigadores del Instituto de Física de Cantabria en el que participan científicos de varios centros españoles. Fuente :...

Un equipo de científicos del Consejo Superior de Investigaciones Científicas ha identificado en la planta modelo Arabidopsis una molécula que bloquea la proliferación de las células madre impulsada por hormonas esteroides. El resultado puede contribuir a la investigación contra los cánceres hormono-dependientes.  El...

Un estudio liderado por el Instituto Nacional del Corazón, el Pulmón y la Sangre de EE UU desvela que los factores de riesgo para la enfermedad renal crónica se manifiestan 30 años antes de ser diagnosticada. Los resultados abren nuevas vías de investigación para determinar si ciertas intervenciones tempranas pueden prevenir...

Editorial Siglo XXI - ISBN: 978-987-629-377-8 - 240 páginas Fuente : http://www.ctys.com.ar/index.php?idPage=20&idA...

Editorial Siglo XXI - ISBN: 978-987-629-377-8 - 240 páginas Fuente : http://www.ctys.com.ar/index.php?idPage=20&idA...

Un grupo de científicos de California, Estados Unidos, identificó a un nuevo mamífero que tiene el tamaño y figura de un ratón pero con genes estrechamente relacionados a los elefantes. Incluso, posee una nariz alargada, como si fuera una trompa. Fuente :...