Escuelas

Noticias

Mortality rates at teaching hospitals lower compared with non-teaching hospitals

EurekAlert! - Lun, 05/22/2017 - 22:00
Patients admitted to major teaching hospitals are less likely to die compared with patients admitted to minor teaching or non-teaching hospitals, according to a large national study from Harvard T.H. Chan School of Public Health.

Neptune: Neutralizer-free plasma propulsion

EurekAlert! - Lun, 05/22/2017 - 22:00
Plasma propulsion concepts are gridded-ion thrusters that accelerate and emit more positively charged particles than negatively charged ones. To enable the spacecraft to remain charge-neutral, a 'neutralizer' injects electrons to exactly balance the positive ion charge in the exhaust beam, but this neutralizer requires additional power from the spacecraft. Researchers are investigating how the radio-frequency self-bias effect can be used to remove the neutralizer altogether. They report their work in this week's Physics of Plasmas.

Understanding stars: How tornado-shaped flow in a dynamo strengthens the magnetic field

EurekAlert! - Lun, 05/22/2017 - 22:00
A new simulation based on the von-Kármán-Sodium (VKS) dynamo experiment takes a closer look at how the liquid vortex created by the device generates a magnetic field. Researchers investigated the effects of fluid resistivity and turbulence on the collimation of the magnetic field, where the vortex becomes a focused stream. They report their findings this week in the journal Physics of Fluids.

Comparison of antibiotic treatments for cellulitis

EurekAlert! - Lun, 05/22/2017 - 22:00
Among patients with uncomplicated cellulitis, the use of an antibiotic regimen with activity against MRSA did not result in higher rates of clinical resolution compared to an antibiotic lacking MRSA activity; however, certain findings suggest further research may be needed to confirm these results, according to a study published by JAMA.

Mortality rates lower at major teaching hospitals

EurekAlert! - Lun, 05/22/2017 - 22:00
In an analysis that included more than 21 million Medicare discharges, admission to a major teaching hospital was associated with a lower overall 30-day risk of death compared with admission to a nonteaching hospital, according to a study published by JAMA.

Atomic structure of irradiated materials is more akin to liquid than glass

EurekAlert! - Lun, 05/22/2017 - 22:00
Materials exposed to neutron radiation tend to experience significant damage. At the nanoscale, these incident neutrons collide with a material's atoms, which then collide with each other. The resulting disordered atomic network resembles those seen in some glassy materials, which has led many in the field to use them in nuclear research. But the similarities between the materials may not be as useful as previously thought, according to this week's The Journal of Chemical Physics.

Online pulmonary rehabilitation not inferior to face-to-face rehab

EurekAlert! - Lun, 05/22/2017 - 22:00
Online pulmonary rehabilitation for patients with chronic obstructive pulmonary disease (COPD) was found to be as effective as face-to-face rehabilitation programs at improving patients' exercise capacity and symptom control, according to new research presented at the 2017 American Thoracic Society International Conference.

Loss of airway blood vessels is associated with risk of death in smokers without COPD

EurekAlert! - Lun, 05/22/2017 - 22:00
In a new study, CT-measured vascular pruning -- the diminution of distal pulmonary blood vessels (vessels on the outer edges of the lungs) -- was associated with increased risk of death in smokers without chronic obstructive pulmonary disease (COPD). The study was presented at the 2017 American Thoracic Society International Conference.

Parents' reasons for not vaccinating children influence public attitudes toward them

EurekAlert! - Lun, 05/22/2017 - 22:00
Mothers are viewed negatively if their child hasn't been vaccinated, no matter the reason. But mothers who outright refuse to vaccinate their children are viewed in a harsher light compared to those who delay vaccines because of safety concerns or who aren't up to date due to time constraints.

Rare tooth find reveals horned dinosaurs in eastern North America

EurekAlert! - Lun, 05/22/2017 - 22:00
A chance discovery in Mississippi provides the first evidence of an animal closely related to Triceratops in eastern North America. The fossil, a tooth from rocks between 68 and 66 million years old, shows that two halves of the continent previously thought to be separated by seaway were probably connected before the end of the Age of Dinosaurs.

Follow-up imaging is less when radiologists read ED ultrasounds

EurekAlert! - Lun, 05/22/2017 - 22:00
According to a study presented at the American College of Radiology annual meeting, the use of follow-up imaging is significantly less when initial emergency department (ED) ultrasound examinations are interpreted by a radiologist than a nonradiologist.

Why our brain cells may prevent us burning fat when we're dieting

EurekAlert! - Lun, 05/22/2017 - 22:00
A study carried out in mice may help explain why dieting can be an inefficient way to lose weight: key brain cells act as a trigger to prevent us burning calories when food is scarce.

A new tool for discovering nanoporous materials

EurekAlert! - Lun, 05/22/2017 - 22:00
EPFL scientists have developed a mathematical 'face-recognition' method for identifying and discovering nanoporous materials based on their pore size.

Weather patterns' influence on frost timing

EurekAlert! - Lun, 05/22/2017 - 22:00
The frost-free season in North America is approximately 10 days longer now than it was a century ago. In a new study, published today in Nature Communications, researchers from the University of Utah and the US Geological Survey parse the factors contributing to the timing of frost in the United States. Atmospheric circulation patterns, they found, were the dominant influence on frost timing, although the trend of globally warming temperatures played a part as well.

Wolves need space to roam to control expanding coyote populations

EurekAlert! - Lun, 05/22/2017 - 22:00
Wolves and other top predators need large ranges to be able to control smaller predators whose populations have expanded, according to a study appearing May 23 in Nature Communications. The results were similar across three continents, showing that as top predators' ranges were cut back and fragmented, they were no longer able to control smaller predators.

Despite partisanship surrounding voter ID, most voters don't believe it suppresses turnout

EurekAlert! - Lun, 05/22/2017 - 22:00
Most Americans -- even average Democrats -- do not accept the argument that voter identification laws can suppress voter turnout, according to a new study that includes a University of Kansas professor.

Strategic brain training positively affects neural connectivity for individuals with TBI

EurekAlert! - Lun, 05/22/2017 - 22:00
A study from the Center for BrainHealth at The University of Texas at Dallas shows that a specific instructor-led brain training protocol can stimulate structural changes in the brain and neural connections even years after a traumatic brain injury (TBI). The findings, published in Brain and Behavior, further suggest that changes in cortical thickness and neural network connectivity may prove an effective way to quantitatively measure treatment efficacy, an ability that has not previously existed.

Off-the-shelf, power-generating clothes are almost here

EurekAlert! - Lun, 05/22/2017 - 22:00
A lightweight, comfortable jacket that can generate the power to light up a jogger at night may sound futuristic, but materials scientist Trisha Andrew at UMass Amherst could make one today. In a new paper this month, she and colleagues outline a way to apply breathable, pliable, metal-free electrodes to fabric and off-the-shelf clothing so it feels good to the touch and also transports enough electricity to power small electronics.

New study examines child death rates in motor vehicle crashes by state

EurekAlert! - Lun, 05/22/2017 - 22:00
New research finds that an estimated 1,100 pediatric deaths could be averted over five years with an absolute 10 percent improvement in child restraint use.

Food is not just the sum of its nutrients

EurekAlert! - Lun, 05/22/2017 - 22:00
The nutritional value of a food should be evaluated on the basis of the foodstuff as a whole, and not as an effect of the individual nutrients. This is the conclusion of an international expert panel of epidemiologists, physicians, food and nutrition scientists and brought together by the University of Copenhagen and University of Reading. Their conclusion reshapes our understanding of the importance of nutrients and their interaction.

Páginas

Subscribe to Facultad de Ciencias agregador