Escuelas

EurekAlert!

Subscribe to canal de noticias EurekAlert! EurekAlert!
The premier online source for science news since 1996. A service of the American Association for the Advancement of Science.
Actualizado: hace 11 mins

Enforcing a weekday bedtime could help your child get sufficient sleep

Lun, 05/22/2017 - 22:00
Enforcing rules about bedtimes could help your child get the sleep they need on weekdays, according to new research published in the open access journal BMC Public Health.

ACR opposes sweeping healthcare cuts in Trump administration budget

Lun, 05/22/2017 - 22:00
The American College of Rheumatology expressed opposition to the Trump Administration's proposed budget cuts to federal programs and institutions that provide critical resources in the fight against rheumatic diseases, including the National Institutes of Health (NIH), the US Food and Drug Administration (FDA), and the Children's Health Insurance Program (CHIP). The rheumatology provider community praised budget proposals to repeal the Independent Payment Advisory Board (IPAB) and to increase funding for Graduate Medical Education (GME) programs.

Lizards may be overwhelmed by fire ants and social stress combined

Lun, 05/22/2017 - 22:00
Lizards living in fire-ant-invaded areas are stressed. However, a team of biologists found that the lizards did not exhibit this stress as expected after extended fire ant exposure in socially stressful environments, leading to questions about stress overload.

Stingless bees have specialized guards to defend their colonies, study reveals

Lun, 05/22/2017 - 22:00
Several species of stingless bees have specialized guards or soldiers to defend their colonies from attacks by natural enemies. The differentiation of these guardian bees evolved in the last 25 million years and coincided with the appearance of parasitic 'robber' bees, which represent a major threat to many stingless bee species. These discoveries were made by a group of researchers in Brazil in collaboration with colleagues in Germany.

How to prevent 3-D printing hacks? Install secret flaws and share the decoder ring

Lun, 05/22/2017 - 22:00
Since the global supply chain for additive manufacturing (AM)-- also called 3-D printing-- requires companies to share CAD files within the organization or with outside parties via email or cloud, intellectual-property thieves and malefactors have many opportunities to filch a manufacturer's design files to produce counterfeit parts. Researchers have discovered ways for manufacturers to turn the tables on thieves by deliberately embedding hidden flaws in CAD files to thwart intellectual property theft.

Blood test offers improved breast cancer detection tool to reduce use of breast biopsy

Lun, 05/22/2017 - 22:00
A Clinical Breast Cancer study demonstrates Videssa Breast can inform better next steps after abnormal mammogram results and potentially reduce biopsies up to 67 percent.

South highest, Northeast lowest for child auto fatalities

Lun, 05/22/2017 - 22:00
The number of motor vehicle fatalities involving children under age 15 varies widely by state, but occurrences are more common in the South, and are most often associated with improperly or unused restraints and crashes on rural roads, a new review of child-related auto fatalities shows.

Genetic mutation trade-offs lead to parallel evolution

Lun, 05/22/2017 - 22:00
Researchers at the University of Illinois at Urbana-Champaign have shown how evolutionary dynamics proceed when selection acts on two traits governed by a trade-off. The results move the life sciences a step closer to understanding the full complexity of evolution at the cellular level.

Recreational cocaine: Brain area involved in addiction activated earlier than thought

Lun, 05/22/2017 - 22:00
Even among non-dependent cocaine users, cues associated with consumption of the drug lead to dopamine release in an area of the brain thought to promote compulsive use, according to researchers at McGill University.

New chemical reaction developed at UCLA could eventually yield new fuels and medications

Lun, 05/22/2017 - 22:00
UCLA chemists have developed a new technique to convert carbon-hydrogen bonds into carbon-carbon bonds using catalysts made of silicon and boron, both abundant and inexpensive elements.

Using a genetic signature to overcome chemotherapy-resistant lung cancer

Lun, 05/22/2017 - 22:00
Patients with non-small cell lung cancer (NSCLC) often respond to standard chemotherapy, only to develop drug resistance later, and with fatal consequences. But what if doctors could identify those at greatest risk of relapse and provide a therapy to overcome or avoid it?

NASA sees powerful storms with advancing monsoon in Bay of Bengal

Lun, 05/22/2017 - 22:00
Storms associated with the advancing monsoon in the Northern Indian Ocean's Bay of Bengal were analyzed by NASA with the GPM or Global Precipitation Measurement mission core satellite.

The high plains aquifer: Can we make it last?

Lun, 05/22/2017 - 22:00
he heart of the United States is a highly productive agricultural region. This "breadbasket" underpins much of U.S. society, but it also relies almost entirely on a complex network of diminishing groundwater resources. In a short and provocative article, for GSA Today, Susan Stover and Rex Buchanan ask a simple question: "How long can the High Plains aquifer last?"

VLA reveals new object near supermassive black hole in famous galaxy

Lun, 05/22/2017 - 22:00
When astronomers took a new look at a famous galaxy with the upgraded Very Large Array, they were surprised by the appearance of a new, bright object that had not appeared in previous images.

Biosynthetic secrets: How fungi make bioactive compounds

Lun, 05/22/2017 - 22:00
Biological engineers at Utah State University have successfully decoded and reprogrammed the biosynthetic machinery that produces a variety of natural compounds found in fungi.

How X-rays helped to solve mystery of floating rocks

Lun, 05/22/2017 - 22:00
Experiments at Berkeley Lab's Advanced Light Source have helped scientists to solve a mystery of why some rocks can float for years in the ocean, traveling thousands of miles before sinking.

Better science faster

Lun, 05/22/2017 - 22:00
Scientists at UCSB's NCEAS are transforming how complex marine data from the Ocean Health Index is synthesized, communicated and used for coastal management.

Special X-ray technique allows scientists to see 3-D deformations

Lun, 05/22/2017 - 22:00
In a new study published last Friday in Science, researchers at Argonne used an X-ray scattering technique called Bragg coherent diffraction imaging to reconstruct in 3-D the size and shape of grain defects. These defects create imperfections in the lattice of atoms inside a grain that can give rise to interesting material properties and effects.

Alzheimer's, Parkinson's, and Huntington's diseases share common crucial feature

Lun, 05/22/2017 - 22:00
A study has found that abnormal proteins found in Alzheimer's, Parkinson's and Huntington's diseases share a similar ability to cause damage when they invade brain cells. The finding suggests that an effective treatment for one neurodegenerative disease might work for other neurodegenerative diseases as well.

Study leads to breakthrough in better understanding acute myeloid leukemia

Lun, 05/22/2017 - 22:00
A study led by the University of Birmingham has made a breakthrough in the understanding of how different genetic mutations cause acute myeloid leukemia.

Páginas