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Noticias

Declawing linked to aggression and other abnormal behaviors in cats

EurekAlert! - Lun, 05/22/2017 - 22:00
According to research published today in the Journal of Feline Medicine and Surgery*, declawing increases the risk of long-term or persistent pain, manifesting as unwanted behaviors such as inappropriate elimination (soiling/urinating outside of the litter box) and aggression/biting.

Lawson and Western researchers suggest dual gait testing as early predictor of dementia

EurekAlert! - Lun, 05/22/2017 - 22:00
In a new study, researchers at Lawson Health Research Institute and Western University are demonstrating that gait, or motion testing, while simultaneously performing a cognitively demanding task can be an effective predictor of progression to dementia and eventually help with earlier diagnosis.

UT study shows snakes, thought to be solitary eaters, coordinate hunts

EurekAlert! - Lun, 05/22/2017 - 22:00
Snakes, although as social as birds and mammals, have long been thought to be solitary hunters and eaters. A new study from the University of Tennessee, Knoxville, shows that some snakes coordinate their hunts to increase their chances of success.

Fall calving season may yield higher returns for southeastern beef producers

EurekAlert! - Lun, 05/22/2017 - 22:00
Using simulation models based on 19 years of data, University of Tennessee Institute of Agriculture researchers determined that for Southeastern beef cattle producers the fall calving season, calving between mid-September and mid-November, was most profitable and had the smallest amount of variation in profits, meaning fall calving was less risky as compared to spring calving.

School choice policies may impact segregation and diversity of public schools

EurekAlert! - Lun, 05/22/2017 - 22:00
Despite decades of educational reform and legal efforts, many U.S. schools are experiencing increasing segregation, with 16 percent of public schools serving both minority and high poverty students.

Researchers untangle causes of differences in East Coast sea level rise

EurekAlert! - Lun, 05/22/2017 - 22:00
For years, scientists have been warning of a so-called 'hot spot' of accelerated sea-level rise along the northeastern US coast, but understanding the causes has proven challenging. Now an upcoming paper offers the first comprehensive model for sorting this out.

Study offers guidance for targeting residual ovarian tumors

EurekAlert! - Lun, 05/22/2017 - 22:00
MIT researchers who are working on an implantable device that could make intraperitoneal chemotherapy more bearable have published a new study that offers insight into how to improve chemotherapy strategies for ovarian cancer, and how to determine which patients would be most likely to benefit from their device.

ACP brings prescription to improve American health care to Congress

EurekAlert! - Lun, 05/22/2017 - 22:00
The American College of Physicians today released a set of recommendations aimed at providing a forward-thinking agenda for health care reform, 'A Prescription for a Forward-Looking Agenda to Improve American Health Care.' The paper articulates ACP's view that now is the time to move away from the debate over repealing and replacing the ACA, and instead, urges Congress and the administration to join with ACP and others to create and implement a forward-looking agenda to improve American health care.

Rising incidence of tick-borne Powassan virus infection in North America

EurekAlert! - Lun, 05/22/2017 - 22:00
Cases of human infection with Powassan virus (POWV), which can cause fatal neuroinvasive disease and long-term neurological effects, appear to be increasing in the United States. POWV is transmitted by Ixodes tick species found in North America.

Depression risk following natural disaster can be predicted via pupil dilation

EurekAlert! - Lun, 05/22/2017 - 22:00
Pupil dilation could identify which individuals are at greatest risk for depression following disaster-related stress, and help lead to targeted interventions, according to new research from Binghamton University, State University of New York.

Common artificial sweetener likely a safe, effective birth control and pesticide

EurekAlert! - Lun, 05/22/2017 - 22:00
Erythritol, a non-nutritive sweetener found in products like Truvia, has proven effective in killing fly larvae and slowing down their egg production, making it a good candidate for human and pet-safe pesticide use.

CAST project places new limitations on dark matter

EurekAlert! - Lun, 05/22/2017 - 22:00
CERN research results deliver no evidence for the existence of solar axions.

How to obtain highly crystalline organic-inorganic perovskite films for solar cells

EurekAlert! - Lun, 05/22/2017 - 22:00
Members of the Laboratory of New Materials for Solar Energetics, working at the Faculty of Material Sciences, in cooperation with their colleagues from the Faculty of Chemistry of the Lomonosov Moscow State University have elaborated a new method. It allows to obtain highly crystalline organic-inorganic perovskite films for solar cells.

Should you pee on a jellyfish sting? (video)

EurekAlert! - Lun, 05/22/2017 - 22:00
We all know the evils that come from a run-in with a jellyfish's tentacles. But thankfully, we can resort to peeing on a sting to make the pain go away -- or can we? Filmed at San Francisco's Aquarium of the Bay, the latest Reactions episode explains the fearsome chemistry of jellyfish stings, and debunks this age-old beach myth: https://youtu.be/KDj2t4-bn1g.

Making biological drugs with spider silk protein

EurekAlert! - Lun, 05/22/2017 - 22:00
Researchers at Karolinska Institutet in Sweden have managed to synthesise lung surfactant, a drug used in the care of preterm babies, by mimicking the production of spider silk. Animal studies reveal it to be just as effective as the biological drugs currently in clinical use. The study is published in Nature Communications.

Tracking cancer's signaling pathways

EurekAlert! - Lun, 05/22/2017 - 22:00
Malignant melanoma is one of the most common and dangerous types of cancer. Researchers at Friedrich-Alexander Universität Erlangen-Nürnberg investigated how and why brown pigmented moles turn into malignant melanoma using innovative robot technology. The insights gained can simplify methods of diagnosis in the future; furthermore, they suggest that certain cosmetic products and creams should be avoided.

Probing problems with bariatric surgery: Reoperations, variation are common

EurekAlert! - Lun, 05/22/2017 - 22:00
Every year, nearly 200,000 Americans turn to surgeons for help with their obesity, seeking bariatric surgery to lose weight and prevent life-threatening health problems. But after more than two decades of steadily increasing numbers of operations, American bariatric surgery centers still vary greatly in the quality of care they provide.

Tracking down the scent of recycled plastic

EurekAlert! - Lun, 05/22/2017 - 22:00
Recycling plastic has an important role in sustainable manufacturing. However, there are still barriers to using recycled plastic not only because of its material and processing properties but also because of its smell. A young researcher at Friedrich-Alexander Universität Erlangen-Nürnberg has now studied what causes recycled plastic to smell.

Optimization of hemp-ground tire rubber/high density polyethylene composites

EurekAlert! - Lun, 05/22/2017 - 22:00
Recent interest in lignocellulosic fibers was devoted to improve the mechanical properties of polymers. But one of their main limitation is the poor compatibility and adhesion between these polar/hydrophilic fibers with most commercial resins being non-polar and hydrophobic. This problem has been partially solved using physical and chemical surface treatments, and/or the addition of a coupling agent (phase compatibilization).

A CLOUD of possibilities: Finding new therapies by combining drugs

EurekAlert! - Lun, 05/22/2017 - 22:00
The CeMM Library of Unique Drugs (CLOUD) is the first condensed set of FDA-approved drugs representing all clinical compounds. Its potential was shown in a combinatorial high throughput screen at the CeMM chemical screening platform, published in Nature Chemical Biology: by testing all CLOUD compounds in combination with each other, a pair of hitherto unrelated drugs proved to be highly effective against multiple prostate cancer cell lines known for their resistance to therapy.

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