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REVISTA ELECTRÓNICA DE CIENCIA, TECNOLOGÍA, SOCIEDAD Y CULTURA. ISSN 2174-6850/ 31 años divulgando conocimiento (desde 1988)
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Tags (9025) : society

Farmers, scientists divided over climate change

11/11/2014 | CIENCIA ON LINE
Crop producers and scientists hold deeply different views on climate change and its possible causes, a study shows. Researchers surveyed 6,795 people in the agricultural sector in 2011-2012 to determine their beliefs about climate change and whether variation in the climate is triggered by human...

Half of premature colorectal cancer deaths due to socioeconomic inequality

11/11/2014 | CIENCIA ON LINE
Half of all premature deaths from colorectal cancer -- described as deaths in people ages 25 to 64 -- in the United States are linked to ethnic, socioeconomic, and geographic inequalities, and therefore could be prevented according to a new study. Fuente :...

Explosive compound reduced blood pressure in female offspring of hypertensive rats

11/11/2014 | CIENCIA ON LINE
The explosive organic compound pentaerythritol tetranitrate helped lower blood pressure in the female offspring of hypertensive rats. Pentaerythritol tetranitrate had no effect on parent rats or their male offspring. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/4...

Archaeologists discover remains of Ice Age infants in Alaska

10/11/2014 | CIENCIA ON LINE
The remains of two Ice Age infants, buried more than 11,000 years ago at a site in Alaska, represent the youngest human remains ever found in northern North America, according to a new article. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/j...

Marijuana's long-term effects on the brain demonstrated

10/11/2014 | CIENCIA ON LINE
The effects of chronic marijuana use on the brain may depend on age of first use and duration of use, according to new research. Researchers for the first time comprehensively describe existing abnormalities in brain function and structure of long-term marijuana users with multiple magnetic...

Cat genome reveals clues to domestication​​

10/11/2014 | CIENCIA ON LINE
Cats and humans have shared the same households for at least 9,000 years, but we still know very little about how our feline friends became domesticated. An analysis of the cat genome reveals some surprising clues. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/V...

A/C came standard on armored dinosaur models

08/11/2014 | CIENCIA ON LINE
A new study shows that armor-plated dinosaurs (ankylosaurs) had the capacity to modify the temperature of the air they breathed in an exceptional way: by using their long, winding nasal passages as heat transfer devices. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/M...

Untangling unknown structures in the mix

08/11/2014 | CIENCIA ON LINE
The characterization of individual components in an unknown crystalline powder mixture is a challenge that has eluded scientists for many years. Now, researchers have for the first time invented a methodology to accurately determine the crystal structures present in such mixtures. Fuente :...

Multifunctional testing instrument helps improve production of laser-heated hard disk drives with enhanced storage capacities

08/11/2014 | CIENCIA ON LINE
Today''s hard disk drives can hold terabytes of digital data, but manufacturers are having trouble squeezing more storage capacity into these devices using conventional procedures. Now, a new technique that promises to solve this impasse -- heat-assisted magnetic recording (HAMR) -- can be...

A long-lived catalyst facilitates the first steps toward a viable small-scale on-board hydrogen generator

08/11/2014 | CIENCIA ON LINE
Researchers are helping to advance the development of hydrogen-powered cars by producing innovative materials that could make on-board hydrogen generators a reality. Hydrogen is a renewable resource with the potential to power everything from households to cars, but its use is currently limited...

Mars spacecraft, including MAVEN, reveal comet flyby effects on Martian atmosphere

07/11/2014 | CIENCIA ON LINE
Two NASA and one European spacecraft have gathered new information about the basic properties of a wayward comet that buzzed by Mars Oct. 19, directly detecting its effects on the Martian atmosphere. Debris from the comet, known officially as Comet C/2013 A1 Siding Spring, caused an intense...

Time spent preparing meals at home linked to healthier diet

07/11/2014 | CIENCIA ON LINE
Spending less than one hour a day preparing food at home is associated with eating more fast food and spending more money eating out, finds new research. Not having time available may be one of the most significant barriers to achieving a healthy diet. Fuente :...

Cybersecurity experts discover lapses in Heartbleed bug fix

07/11/2014 | CIENCIA ON LINE
A detailed analysis by cybersecurity experts found that U.S. website administrators nationwide tasked with patching security holes exploited by the Heartbleed bug may not have done enough. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/P...

On the Trail of Proteins: Scientists electrochemically detect protein binding on semiconductors

07/11/2014 | CIENCIA ON LINE
Scientists have succeeded in electrochemically detecting protein binding on semiconductor materials for the first time, thanks to a newly developed investigative method based on differences in electrical charge. Now the physicists are working on an optical process to detect and localize protein...

Reprogrammed cells grow into new blood vessels

07/11/2014 | CIENCIA ON LINE
By transforming human scar cells into blood vessel cells, scientists may have discovered a new way to repair damaged tissue. The method appeared to improve blood flow, oxygenation, and nutrition to areas in need. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/0...

Astronomers peer into galaxies' star-forming centers

06/11/2014 | CIENCIA ON LINE
Astronomers provide data from a new instrument, offering the most precise picture yet of events 4 billion years ago at the centers of distant, dust-cloaked galaxies. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/D...

The tiger beetle: Too fast to see: Biologist looks into how the speedy predator pursues prey

06/11/2014 | CIENCIA ON LINE
Speed is an asset for a predator. Except when that predator runs so fast that it essentially blinds itself. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/R...

Thermomagnetic processing method provides path to new materials

06/11/2014 | CIENCIA ON LINE
For much the same reason LCD televisions offer eye-popping performance, a thermomagnetic processing method can advance the performance of polymers. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/t...

Who will come to your bird feeder in 2075?

06/11/2014 | CIENCIA ON LINE
The distribution of birds in the United States today will probably look very different in 60 years as a result of climate, land use and land cover changes. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/L...

Mystery sea of stars? Rocket experiment finds surprising cosmic light

06/11/2014 | CIENCIA ON LINE
Using an experiment carried into space on a NASA suborbital rocket, astronomers have detected a diffuse cosmic glow that appears to represent more light than that produced by known galaxies in the universe. The discovery suggests that many such previously undetected stars permeate what had been...

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