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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 (9027) : technology

'Programmable' antibiotic harnesses an enzyme to attack drug-resistant microbes

05/10/2014 | CIENCIA ON LINE
Conventional antibiotics are indiscriminate about what they kill, a trait that can lead to complications for patients and can contribute to the growing problems of antibiotic resistance. But a a 'programmable' antibiotic would selectively target only the bad bugs, particularly those harboring...

Number of genes linked to height revealed by study

05/10/2014 | CIENCIA ON LINE
The largest genome-wide association study to date, involving more than 300 institutions and more than 250,000 subjects, roughly doubles the number of known gene regions influencing height to more than 400. The study provides a better glimpse at the biology of height and offers a model for...

Breakthrough allows researchers to watch molecules

05/10/2014 | CIENCIA ON LINE
A new crystallographic technique is set to transform scientists' ability to observe how molecules work. Although fast time-resolved crystallography (Laue crystallography) has previously been possible, it has required advanced instrumentation that is only available at three sites worldwide. Only a...

First pictures of BRCA2 protein show how it works to repair DNA

05/10/2014 | CIENCIA ON LINE
Scientists have taken pictures of the BRCA2 protein for the first time, showing how it works to repair damaged DNA. The findings showed that each pair of BRCA2 proteins binds two sets of RAD51 that run in opposite directions. This allows it to work on strands of broken DNA that point in either...

Study questions the prescription for drug resistance

04/10/2014 | CIENCIA ON LINE
A new study questions the accepted wisdom that aggressive treatment with high drug dosages and long durations is always the best way to stem the emergence and spread of resistant pathogens. The review of nearly 70 studies of antimicrobial resistance reveals the lack of evidence behind the practice...

NASA's SDO watches giant filament on the sun

04/10/2014 | CIENCIA ON LINE
A snaking, extended filament of solar material currently lies on the front of the sun -- some 1 million miles across from end to end. Filaments are clouds of solar material suspended above the sun by powerful magnetic forces. Though notoriously unstable, filaments can last for days or even weeks....

More accurate model for greenhouse gases from peatlands

04/10/2014 | CIENCIA ON LINE
Scientists have created a new model to more accurately describe the greenhouse gases likely to be released from Arctic peatlands as they warm. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/L...

Lack of adherence to safe handling guidelines for administration of antineoplastic drugs found through study

04/10/2014 | CIENCIA ON LINE
Recommended safe handling practices for workers who administer antineoplastic drugs in healthcare settings are not always followed, a study has found. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/r...

Engineers use 3-D gaming gear to give eye-opening look at cells in action

04/10/2014 | CIENCIA ON LINE
For hundreds of years biologists have studied cells through the lens of a microscope. With a little help from a team of engineers, these scientists could soon be donning 3-D glasses in a home-theater-like lab to take their own fantastic voyage into the petri dish. Fuente :...

RCas9: A programmable RNA editing tool

04/10/2014 | CIENCIA ON LINE
A powerful scientific tool for editing the DNA instructions in a genome can now also be applied to RNA as researchers have demonstrated a means by which the CRISPR/Cas9 protein complex can be programmed to recognize and cleave RNA at sequence-specific target sites. Fuente :...

Physicist turns smartphones into pocket cosmic ray detectors

02/10/2014 | CIENCIA ON LINE
A new smartphone app can essentially turn Android phones into pocket cosmic ray detectors. The app, DECO, uses the phone's camera to capture energetic subatomic light particles and log data. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/l...

Quantum environmentalism: Putting a qubit's surroundings to good use

02/10/2014 | CIENCIA ON LINE
A qubit's environment, usually viewed as a threat to coherence, here serves as an aid to manipulating and interrogating the qubit. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/v...

Exotic matter: A closer look at the perfect fluid sheds light on what happened microseconds after the Big Bang

02/10/2014 | CIENCIA ON LINE
By combining data from two high-energy accelerators, nuclear scientists have refined the measurement of a remarkable property of exotic matter known as quark-gluon plasma. The findings reveal new aspects of the ultra-hot, 'perfect fluid' that give clues to the state of the young universe just...

Discovery could prevent development of brain tumors in children

02/10/2014 | CIENCIA ON LINE
A mechanism that promotes the progression of medulloblastoma, the most common brain tumor found in children, has been discovered by researchers. The team found that a protein known as Sonic Hedgehog induces DNA damage causes the cancer to develop. Fuente :...

Falling asleep: Revealing the point of transition

02/10/2014 | CIENCIA ON LINE
How can we tell when someone has fallen asleep? To answer this question, scientists have developed a new statistical method and behavioral task to track the dynamic process of falling asleep. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/2...

Judgment and decision-making: Brain activity indicates there is more than meets the eye

02/10/2014 | CIENCIA ON LINE
People make immediate judgments about images they are shown, which could impact on their decisions, even before their brains have had time to consciously process the information, a study of brainwaves has found. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/9...

Relationship between neighborhood drug sales, drug use found

02/10/2014 | CIENCIA ON LINE
A new study looks at neighborhood factors as a cause to explain illicit drug use, exploring the associations between the perceived frequency of drug sales, drug use, and peer attitudes towards drug use. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/6...

Schizophrenia, bipolar disorder associated with dendritic spine loss in brain

02/10/2014 | CIENCIA ON LINE
Schizophrenia and bipolar disorder both appear to be associated with dendritic spine loss in the brain, suggesting the two distinct disorders may share common pathophysiological features. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/4...

Discovery helps to spot what makes a good drug

02/10/2014 | CIENCIA ON LINE
A new test could revolutionize the discovery of new prescription drugs. The test will help determine which drugs are unlikely to work at an early stage, speeding up the time it takes to make safe and effective medicines available, scientists say. Fuente :...

Auditory system: The ruffling effect of rumble

02/10/2014 | CIENCIA ON LINE
Barely perceptible low-frequency signals nevertheless activate measurable responses in our auditory circuits. Neurobiologists have now characterized the remarkable impact of low-frequency sounds on the inner ear. Fuente : http://feeds.sciencedaily.com/~r/sciencedaily/~3/Y...

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