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Neutrons fly left or right depending on size of colliding nuclei

physicsworld.com - Hace 9 horas 50 mins
Outcome of collision determined by electromagnetic and strong forces

Optical ‘astrocomb’ could boost searches for Earth-like planets

physicsworld.com - Hace 11 horas 31 mins
Microresonator cavity operates at frequencies needed to make extremely precise observations

Magnetically applied MicroRNAs could one day help relieve constipation

EurekAlert! - Lun, 01/15/2018 - 23:00
Micro metal beads and magnets help deliver a biologic where it's needed to improve constipation or rectoanal incontinence in animal models of the disorders.

Stronger, able older adults have better outcomes when hospitalized with critical illnesses

EurekAlert! - Lun, 01/15/2018 - 23:00
Until now, the role of strength before hospitalization has not been well-studied. To fill this knowledge gap, a research team created a study. The study was to learn how older adults' strength before they became ill affected how long they stayed in the hospital after being admitted to an ICU. They also learned whether or not the older adults died while in the hospital or within a year after discharge. Their study was published in the Journal of the American Geriatrics Society.

Biodegradable sensor could help doctors monitor serious health conditions

EurekAlert! - Lun, 01/15/2018 - 23:00
University of Connecticut engineers have created a biodegradable pressure sensor that could help doctors monitor chronic lung disease, swelling of the brain, and other medical conditions before dissolving harmlessly in a patient's body.

Tracking the impact of early abuse and neglect

EurekAlert! - Lun, 01/15/2018 - 23:00
Maltreatment experienced before age 5 can have negative effects that continue to be seen nearly three decades later, according to a new study led by Lee Raby, an assistant professor of psychology at the University of Utah.

Bright light therapy improves sleep in people treated for cancer

EurekAlert! - Lun, 01/15/2018 - 23:00
Results of a randomized controlled trial suggest that systematic bright light exposure can improve sleep for fatigued people who have been treated for cancer.

New study suggests shark declines can lead to changes in reef fish body shapes

EurekAlert! - Lun, 01/15/2018 - 23:00
Scientists studying nearly identical coral reef systems off Australia discovered something unusual on the reefs subjected to nearly exclusive fishing of sharks--fish with significantly smaller eyes and tails. The study is the first field evidence of body shape changes in fish due to human-driven shark declines from overfishing. These findings shed new light on the cascading effects the loss of the ocean's top predators is having on marine ecosystems.

Study advances gene therapy for glaucoma

EurekAlert! - Lun, 01/15/2018 - 23:00
In a study published today in the scientific journal Investigative Ophthalmology and Visual Science, Kaufman and Curtis Brandt, a fellow professor of ophthalmology and visual sciences at UW-Madison, showed an improved tactic for delivering new genes into the eye's fluid drain, called the trabecular meshwork. It could lead to a treatment for glaucoma.

Weather anomalies accelerate the melting of sea ice

EurekAlert! - Lun, 01/15/2018 - 23:00
ETH researchers reveal why Arctic sea ice began to melt in the middle of winter two years ago -- and that the increased melting of ice in summer is linked to recurring periods of fair weather.

Clockwork under the microscope

EurekAlert! - Lun, 01/15/2018 - 23:00
Circadian clocks regulate the behaviour of all living things. Scientists from the University of Würzburg have now taken a closer look at the clock's anatomical structures and molecular processes in the honeybee.

Who might benefit from immunotherapy? New study suggests possible marker

EurekAlert! - Lun, 01/15/2018 - 23:00
New research finds that PDL-1 expressed in antigen presenting cells -- macrophages and dendritic cells found in the tumor microenvironment and in the nearby lymph nodes -- is a better indicator than PDL-1 in the tumor of who will respond to immunotherapy drugs.

Drones confirm importance of Costa Rican waters for sea turtles

EurekAlert! - Lun, 01/15/2018 - 23:00
A new drone-enabled population survey -- the first ever on sea turtles -- shows that larger-than-anticipated numbers of turtles aggregate in waters off Costa Rica's Ostional National Wildlife Refuge. Scientists from Duke and UNC-Chapel Hill estimate turtle densities may reach up to 2,086 animals per square kilometer. The study underscores the importance of the Ostional habitat; it also confirms that drones are a reliable tool for surveying sea turtle abundance.

Study finds black children face higher risk of death post surgery

EurekAlert! - Lun, 01/15/2018 - 23:00
A recent study, Race, Preoperative Risk Factors, and Death After Surgery, has found that black children are more than twice as likely to die following surgery than white children and describes race-specific models to predict surgical outcomes. The study is published in the February 2018 issue of Pediatrics.

New process could slash energy demands of fertilizer, nitrogen-based chemicals

EurekAlert! - Lun, 01/15/2018 - 23:00
Nitrogen-based synthetic fertilizer forms the backbone of the world food supply, but its manufacture requires a tremendous amount of energy. Now, computer modeling at Princeton University points to a method that could drastically cut the energy needed by using sunlight in the manufacturing process.

Pregnant women in NC exposed to less secondhand nicotine after 'smoking ban'

EurekAlert! - Lun, 01/15/2018 - 23:00
A new study from Duke Health has found pregnant women experienced less secondhand smoke exposure since the 2009 passage of the 'smoking ban' in North Carolina, which outlawed smoking inside public places such as bars and restaurants.

In sweet corn, workhorses win

EurekAlert! - Lun, 01/15/2018 - 23:00
When deciding which sweet corn hybrids to plant, vegetable processors need to consider whether they want their contract growers using a workhorse or a racehorse. Is it better to choose a hybrid with exceptional yields under ideal growing conditions (i.e., the racehorse) or one that performs consistently well across ideal and less-than-ideal conditions (i.e., the workhorse)? New research from the University of Illinois suggests the workhorse is the winner in processing sweet corn.

T-cells engineered to outsmart tumors induce clinical responses in relapsed Hodgkin lymphoma

EurekAlert! - Lun, 01/15/2018 - 23:00
A research team that includes Children's National Health System clinician-researchers has validated a way to outfox tumors. They engineered T-cells, essential players in the body's own immune system, to strip tumors of their self-preservation skill and were able to hold Hodgkin lymphoma at bay in patients with relapsed disease for more than four years.

Study: Patients receive most opioids at the doctor's office, not the ER

EurekAlert! - Lun, 01/15/2018 - 23:00
A close examination of federal survey data shows that while many settings including ERs cut back on prescribing opioids for more than a decade, physicians' offices continued to prescribe them.

Memory gene goes viral

EurekAlert! - Lun, 01/15/2018 - 23:00
Two independent teams of scientists from the University of Utah and the University of Massachusetts Medical School have discovered that a gene crucial for learning, called Arc, can send its genetic material from one neuron to another by employing a strategy commonly used by viruses. The studies, both published in Cell, unveil a new way that nervous system cells interact.

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