Brightsurf Science News & Current Events

July 26, 2017
Somersaulting simulation for jumping bots
In recent years engineers have been developing new technologies to enable robots and humans to move faster and jump higher.

Americans are quitting smoking in higher numbers; study suggests e-cigarettes help
University of California San Diego School of Medicine and Moores Cancer Center researchers performed a population-level analysis of national surveys conducted from 2001 to 2015 and found that in the United States the smoking cessation rate increased for the first time in 15 years.

Study calls for review into census capture of 'mixed' populations
Current methods of capturing mixed race/ethnicity populations in global censuses are unreliable, and must be reviewed to ensure increasingly diverse populations are effectively reported, a study published today in Ethnic and Racial Studies suggests.

Large-mouthed fish was top predator after mass extinction
The food chains recovered more rapidly than previously assumed after Earth's most devastating mass extinction event about 252 million years ago as demonstrated by the fossilized skull of a large predatory fish called Birgeria americana discovered by paleontologists from the University of Zurich in the desert of Nevada.

Delaying bariatric surgery until higher weight may result in poorer outcomes
Obese patients who underwent bariatric surgery were more like to achieve a body mass index (BMI) of less than 30 one year after surgery if they had a BMI of less than 40 before surgery, according to a study published by JAMA Surgery.

Incorporating 12-step program elements improves youth substance-use disorder treatment
A treatment program for adolescents with substance-use disorder that incorporates the practices and philosophy of 12-step programs like Alcoholics Anonymous produced even better results than the current state-of-the art treatment approach in a nine-month, randomized trial.

UAlberta and McGill scientists uncover a hidden calcium cholesterol connection
It's well known that calcium is essential for strong bones and teeth, but new research shows it also plays a key role in moderating another important aspect of health -- cholesterol.

NUS scientists identify optimal areas for conservation and agriculture in the tropics
A team of researchers from the National University of Singapore (NUS) has recently completed a global study on the trade-offs between the benefits provided by tropical forests and its conversion for agricultural use.

Researchers develop DNA sunscreen that gets better the longer you wear it
Why use regular sunscreen when you can apply a DNA film to your skin?

Smokers who undergo a CT scan of their lungs more likely to quit
New research published in the scientific journal Thorax has found that smokers who undergo a CT scan of their lungs are more likely to quit smoking.

New law could shore up US helium supply
Helium is essential for MRIs, the fiber optics that deliver images to our TVs, scientific research and of course, party balloons.

Study uncovers potential 'silver bullet' for preventing and treating colon cancer
In preclinical experiments, researchers at VCU Massey Cancer Center have uncovered a new way in which colon cancer develops, as well as a potential 'silver bullet' for preventing and treating it.

Phase 3 trial confirms superiority of tocilizumab to steroids for giant cell arteritis
A phase 3 clinical trial led by a Massachusetts General Hospital physician has confirmed that regular treatment with tocilizumab, an inhibitor of interleukin-6, successfully reduced both symptoms of and the need for high-dose steroid treatment for giant cell arteritis, the most common form of blood-vessel inflammation.

Is extended-release guanfacine effective in children with chronic tic disorders?
A new study assessed the safety, tolerability, and effectiveness of extended-release guanfacine in children 6-17 years of age who have chronic tic disorders including Tourette's disorder.

Atomic discovery opens door to greener, faster, smaller electronic circuitry
A key step in unlocking the potential for greener, faster, smaller electronic circuitry was taken recently by a group of researchers led by UAlberta physicist Robert Wolkow.

Triple-layer catalyst does double duty
A single, robust catalyst that splits water into hydrogen and oxygen has been developed with Earth-abundant materials that approach the efficiency of more expensive platinum, according to Rice and University of Houston scientists.

Brain cells found to control aging
Scientists at Albert Einstein College of Medicine have found that stem cells in the brain's hypothalamus govern how fast aging occurs in the body.

Liquid electrolyte contacts for advanced characterization of resistive switching memories
A new methodology to study resistive switching memories, based on the combination of ionic liquid gating experiments plus conductive atomic force microscopy, has been presented at the 2017 ChinaRRAM International Workshop.

Atomic movies may help explain why perovskite solar cells are more efficient
Experiments with a powerful 'electron camera' at the Department of Energy's SLAC National Accelerator Laboratory have discovered that light whirls atoms around in perovskites, potentially explaining the high efficiency of these next-generation solar cell materials and providing clues for making better ones.

Osaka chemists build new chemical structures on unreactive bonds
Osaka University organic chemists transform strong carbon fluorine bonds into crowded quaternary carbon centers with cobalt catalyzed Grignard chemistry.

Adjusting fertilizers vital in claypan ag soils
New research could help claypan farmers improve yields while saving costs.

Stanford researchers engineer 3-D hydrogels for tissue-specific cartilage repair
Unlike the one-size-fits-all, homogeneous approach to tissue engineering for cartilage replacement, a new study reports the ability to encapsulate cartilage-forming chondrocytes and mesenchymal stem cells in 3-D hydrogels within a stiffness gradient.

Opting for weight-loss surgery at lower BMIs may be best for patients' health
The struggle to escape obesity is pointing more Americans toward bariatric surgery.

User research at BER II: Lupin roots observed in the act of drinking
Lupins produce colourful blossoms and nutritious beans. Just how these plants draw water has now for the first time been observed in three dimensions by a University of Potsdam team at the HZB-BER II neutron source in Berlin.

Compound shows promise in treating melanoma
While past attempts to treat melanoma failed to meet expectations, an international team of researchers are hopeful that a compound they tested on both mice and on human cells in a petri dish takes a positive step toward creating a drug that can kill melanoma cancer cells without harming nearby healthy cells.

Risk for bipolar disorder associated with faster aging
New King's College London research suggests that people with a family history of bipolar disorder may 'age' more rapidly than those without a history of the disease.

A large-scale 'germ trap' solution for hospitals
A team led by CU Boulder researchers has demonstrated a way for hospitals to create large negative pressure wards in order to prepare for disease outbreaks.

Waterlogged brain region helps scientists gauge damage caused by Parkinson's disease
Scientists at the University of Florida have discovered a new method of observing the brain changes caused by Parkinson's disease, which destroys neurons important for movement.

Taking cue from nature, Disney Research designs machines that bend
Replacing rigid joints and linkages with mechanisms that bend offers a number of potential advantages, even as it makes designing devices more difficult.

Trees can make or break city weather
Even a single urban tree can help moderate wind speeds and keep pedestrians comfortable as they walk down the street, according to a new University of British Columbia study that also found losing a single tree can increase wind pressure on nearby buildings and drive up heating costs.

The Society for Integrative and Comparative Biology 2017 Annual Meeting
For this episode of BioScience Talks, we chatted with presenters and personnel from SICB's 2017 annual meeting, which was held earlier this year in New Orleans.

In assessing risk of hormone therapy for menopause, dose -- not form -- matters
UCLA-led research finds that the way estrogen therapy for menopause is delivered doesn't affect risk or benefit.

NASA sees newly formed Tropical Storm Nesat near Philippines
Tropical Storm Nesat formed early on July 26 just east of the Philippines and NASA's Aqua satellite passed overhead gathering temperature data to determine the location of the most powerful storms.

Longer cooling does not harm and may even help out of hospital cardiac arrest patients
Eight out of 355 cardiac arrest patients who do not immediately wake up after hospitalisation, have benefited from being cooled down to a temperature of 33°C for as long as 48 hours.

Fifty years on, the Breeding Bird Survey continues to produce new insights
In 1966, a US Fish and Wildlife Service biologist named Chan Robbins launched an international program designed to measure changes in bird populations using volunteers recruited to count birds on pre-set routes along country roads.

Diffusion dynamics play an essential role in regulating stem cells and tissue development
New work describes vital aspects of diffusion processes in tissue development, including the roles that molecular diffusion gradients have on stem cell signaling pathways along with new modeling tools that describe gradients of nutrients and signaling factors in three-dimensional tissue constructs.

What are risk factors for melanoma in kidney transplant recipients?
Kidney transplant patients appear to be at a greater risk of developing melanoma than the general population and risk factors include being older, male and white, findings that corroborate results demonstrated in other studies, according to a new article published by JAMA Dermatology.

UCI stem cell therapy attacks cancer by targeting unique tissue stiffness
A stem cell-based method created by University of California, Irvine scientists can selectively target and kill cancerous tissue while preventing some of the toxic side effects of chemotherapy by treating the disease in a more localized way.

Identified the component that allows a lethal bacteria to spread resistance to antibiotics
A study performed at the Institute for Research in Biomedicine (IRB Barcelona) and involving the collaboration of the Centro de Investigaciones Biológicas (CIB-CSIC) in Madrid has identified the key component of the machinery that S. aureus uses to acquire and transfer genes that confer resistance to antibiotics.

Concerns that austerity policies reversing gains to reduce health inequalities in England
A cross government strategy, in place from 1997 to 2010, appears to have reduced health inequalities between the most deprived areas in England and the rest of the country, finds a study in The BMJ today.

ECDC estimate: Around 9 million Europeans are affected by chronic hepatitis B or C
An estimated 4.7 million Europeans are living with chronic hepatitis B and almost 4 million with chronic hepatitis C infection.

Leaving Europe's nuclear regulator will put patients at risk, warns expert
The UK's proposed withdrawal from the European Atomic Energy Community (Euratom) would threaten the supply of essential medical isotopes (essential for some types of cancer treatment and medical imaging) putting patients at risk, argues an expert in The BMJ today.

Queen's University Belfast researcher turning dirty tinfoil into biofuel catalyst
A researcher at Queen's University Belfast has discovered a way to convert dirty aluminum foil into a biofuel catalyst, which could help to solve global waste and energy problems.

Massive star's dying blast caught by rapid-response telescopes
A blast of gamma rays from space detected in June 2016 is helping astronomers resolve long-standing questions about the universe's most powerful explosions.

New 3-D technique uses water and robotics to reconstruct complex objects
'Using a robotic arm to immerse an object on an axis at various angles, and measuring the volume displacement of each dip, we combine each sequence and create a volumetric shape representation of an object,' says Professor Andrei Scharf, of Ben-Gurion University of the Negev, Department of Computer Science.

Atlantic/Pacific ocean temperature difference fuels US wildfires
A new study shows that difference in water temperature between the Pacific and the Atlantic oceans together with global warming impact the risk of drought and wildfire in southwestern North America.

Regulation of two-dimensional nanomaterials: New driving force for lithium-ion batteries
Two-dimensional nanomaterials have offered an unprecedented opportunity as electrode materials for high-performance lithium ion batteries.

How plant architectures mimic subway networks
Salk scientists use 3-D laser scanning to understand how plants optimize their growth.

This week from AGU: Researchers uncover 200-year-old sunspot drawings in Maine
This week from AGU is a compilation of recent publications featuring research published in an AGU journal.

Using powerful Dark Energy Camera, scientists reach the cosmic dawn
Arizona State University astronomers Sangeeta Malhotra and James Rhoads, working with international teams in Chile and China, have discovered 23 young galaxies, seen as they were 800 million years after the Big Bang.

Satellite sees Tropical Depression Greg as a ghostly swirl of clouds
Tropical Depression Greg appears as a ghostly swirl of low clouds on satellite imagery from NOAA's GOES-West satellite on July 27.

SA child living with HIV maintains remission without ARVs since 2008
A 9-year-old South African diagnosed with HIV at a month old who received antiretroviral treatment during infancy has suppressed the virus for almost 9 years.

'Visionary' project to save the Belize coast provides valuable framework
A coastal zone management plan designed to safeguard Belize's natural assets has produced a win-win opportunity for people and the environment, providing a valuable framework for other coastal nations around the world where overfishing, development, and habitat degradation are increasingly serious problems.

NASA eyes compact Hurricane Hilary
When the NASA-NOAA Suomi NPP satellite passed over the Eastern Pacific Ocean on July 25 it captured a visible close-up of Hurricane Hilary.

Osaka solar scientists rough up silicon panels to boost light capture
Osaka University scientists enhance conversion efficiency of crystalline Si solar cells by effectively preventing reflection loss, passivating a submicron silicon structure, and adding a rough nanoscale surface texture using simple and inexpensive processes.

Research evaluates impact of surgical modality on breast-specific sensuality
Does the type of surgery used to treat breast cancer impact a woman's sensuality and sexual function in survivorship?

Gamma-ray burst captured in unprecedented detail
Using a wide array of ground- and space-based telescope observations, an international team led by University of Maryland astronomers constructed one of the most detailed descriptions of a gamma-ray burst to date.

Strange electrons break the crystal symmetry of high-temperature superconductors
Scientists have found surprising electron behavior that may help unravel the ever-elusive mechanism behind high-temperature superconductivity -- a phenomenon in which electrical current flows freely without resistance through a material at unusually high temperatures relative to those of conventional superconductors.

Cultural flexibility was key for early humans to survive extreme dry periods in southern Africa
The early human techno-tradition, known as Howiesons Poort, associated with Homo sapiens who lived in southern Africa about 66,000 to 59,000 years ago indicates that during this period of pronounced aridification they developed cultural innovations that allowed them to significantly enlarge the range of environments they occupied.

Programming cells with computer-like logic
A team at Harvard's Wyss Institute for Biologically Inspired Engineering is presenting an all-in-one solution that imbues a molecule of 'ribo'nucleic acid or RNA with the capacity to sense multiple signals and make logical decisions to control protein production with high precision.

ACA reduced disparities in health care access, report shows
The Affordable Care Act (ACA) has helped to close the gap in health care access between residents of poor and higher-income households, a new report by Boston University School of Public Health (BUSPH) researchers shows.

Bringing deep learning to big screen animation
Modern films and TV shows are filled with spectacular computer-generated sequences computed by rendering systems that simulate the flow of light in a three-dimensional scene and convert the information into a two-dimensional image.

Talking to yourself in the third person can help you control emotions
The simple act of silently talking to yourself in the third person during stressful times may help you control emotions without any additional mental effort than what you would use for first-person self-talk -- the way people normally talk to themselves.

Quantifying lower limb muscle weakness in Osteogenesis Imperfecta type IV
To date, muscle function, and in particular that of the lower extremity, in OI type IV has not been investigated systematically.

Chatting coordinates heterogeneity
Bacterial populations can, under certain conditions, react in a coordinated manner to chemical messages produced by a minority of their members, as a new theoretical study carried out by LMU biophysicists shows.

Soft robotic exosuits help patients walk after stroke
Scientists have created lightweight and low-profile soft robotic ankle supports that could help stroke patients walk with less difficulty and more normal strides.

Robot-driven device improves crouch gait in children with cerebral palsy
3.6 out of 1,000 children in the US are diagnosed with cerebral palsy.

Isotopes in prehistoric cattle teeth suggest herding strategies used during the Neolithic
Analysis of strontium isotopes in teeth from Neolithic cattle suggest that early Europeans used different specialized herding strategies, according to a study published July 26, 2017 in the open-access journal PLOS ONE by Claudia Gerling from University of Basel, Basel, Switzerland, and colleagues.

Is it Alzheimer's disease or another dementia?
A new method may help determine whether a person has Alzheimer's disease or frontotemporal dementia, two different types of dementia that often have similar symptoms, according to a preliminary study published in the July 26, 2017, online issue of Neurology®, the medical journal of the American Academy of Neurology.

Review: Could be unintended consequences of limiting surgical residents' hours
Opinion is still divided on whether strictly limiting the number of hours surgical residents can work and train impacts patient outcomes, the residents' quality of life or the caliber of their training, according to a paper published today.

Biomarkers for identifying tumor aggressiveness
Future early-stage colon cancer patients could benefit from specific genetic tests that forecast their prognosis and help them make the right decision regarding chemotherapy.

How bacteria maintain and recover their shape
Bacteria have an extraordinary ability to maintain and recover their morphology even after being twisted out of shape.

New study recommends alternative pain relief for knee replacement patients
A new study led by researchers at University Hospitals Coventry and Warwickshire NHS Trust and the University of Warwick has recommended an alternative method of pain relief for patients undergoing knee replacement surgery.

Researchers overturn wisdom regarding efficacy of next-generation DNA techniques
Metagenomics enables us to investigate microbial ecology at a much larger scale than ever before and sheds light upon the previously invisible diversity of microscopic life.

"Are we there yet?" -- explaining ADHD science to children
A collaboration between OIST and Brazilian researchers reported their latest brain research on ADHD in a scientific journal targeting -- and peer-reviewed by -- children.

Living computers: RNA circuits transform cells into nanodevices
In new research, Alex Green, an assistant professor at ASU's Biodesign Institute and School of Molecular Sciences, demonstrates how living cells can be induced to carry out computations in the manner of tiny robots or computers.

Rise in e-cigarettes linked to rise in smokers quitting, say researchers
The recent rise in e-cigarette use among US adult smokers is associated with a significant increase in smoking cessation, finds a study published in The BMJ.

Getting closer to porous, light-responsive materials
Researchers at Kyoto University's Institute for Integrated Cell-Material Sciences (iCeMS) and the University of Tokyo have developed a light-responsive crystalline material that overcomes challenges faced in previous studies.

New global aging index gauges health and wellbeing of aging populations
Researchers have developed a new barometer that estimates how countries are adapting to the dramatic increases in the number and proportion of older persons.

Physicists gain new insights into nanosystems with spherical confinement
Theoretical physicists led by Professor Kurt Binder and Dr. Arash Nikoubashman at Johannes Gutenberg University Mainz (JGU) in Germany have used computer simulations to study the arrangement of stiff polymers in spherical cavities.

Early dementia care improvement findings to be shared
Distractions during drug rounds contribute to the challenges of treating hospital patients living with dementia, but the involvement of family or carers can be hugely beneficial, according to early results from a five-year research programme into improving care.

Researchers develop model to predict and prevent power outages using big data
High-speed winds during a thunderstorm may cause trees around an electric grid to crash into the distribution system feeders causing an outage in that area.

Identifying major transitions in human cultural evolution
Over the past 10,000 years human cultures have expanded from small groups of hunter-gatherers to colossal and complexly organized societies.

Involvement of prescription opioids in fatal car crashes climbs sevenfold
The percentage of fatally injured drivers who tested positive for prescription opioids rose sevenfold from 1 percent in 1995 to over 7 percent in 2015, according to a new study at Columbia University's Mailman School of Public Health.

NASA's Terra Satellite catches the end of Tropical Depression Kulap
NASA's Terra satellite passed over Tropical Depression Kulap as the storm was winding down in the Northwestern Pacific Ocean.

Should doctors work longer shifts?
This week, The BMJ looks at the issue of working hours and burnout among doctors.

Competition for survival signals maintains immune balance
Although scarce, the recently discovered innate lymphoid cells vie with T cells for a shared source of interleukin-7, which helps them to survive.

Managers often fail to use or understand their own data on customer satisfaction
Despite the millions companies spend to gather information about customer satisfaction, senior managers often fail to understand those customers' expectations.

Archaeologists find key to tracking ancient wheat in frozen Bronze Age box
A Bronze Age wooden container found in an ice patch at 2,650m in the Swiss Alps could help archaeologists shed new light on the spread and exploitation of cereal grains following a chance discovery.

Study sheds light on how body may detect early signs of cancer
Fresh insights into how cells detect damage to their DNA -- a hallmark of cancer -- could help explain how the body keeps disease in check.

Group relocation preserves social connections among elderly Japanese Tsunami survivors
Relocating in groups, rather than individually, increased informal socializing and social participation among older survivors of the 2011 Great East Japan Earthquake and Tsunami, a new study shows.

Body ownership is not impaired in schizophrenia
Answering a long-standing question, EPFL scientists have determined that the sense of body ownership is not affected in schizophrenia patients.

Milky Way's origins are not what they seem
In a first-of-its-kind analysis, Northwestern University astrophysicists have discovered that up to half of the matter in our Milky Way galaxy may come from distant galaxies.

With new ventures to show, MIT Hacking Medicine shares its model for success
Since 2010, MIT Hacking Medicine has grown from a one-time event to a global brand, with more than 80 healthcare hackathons being hosted this year, from Cambridge, Mass., to Quito, Ecuador.

Disney Research makes augmented reality a group experience
Sit on Disney Research's Magic Bench and you may have an elephant hand you a glowing orb.

A new bird which humans drove to extinction discovered in Azores
Inside the crater of a volcano on Graciosa Island in the Azores archipelago, in the Atlantic Ocean, an international team of researchers has discovered the bones of a new extinct species of songbird, a bullfinch which they have named Pyrrhula crassa.

A rogue gene is causing seizures in babies -- here's how MSU wants to stop it
Two rare diseases caused by a malfunctioning gene that triggers seizures or involuntary movements in children as early as a few days old have left scientists searching for answers and better treatment options.

Longer-lasting fragrance is just a shampoo away, thanks to peptides
Many people select their shampoo based on smell. Unfortunately, that scent usually doesn't last long on hair.

Traces of adaptation and cultural diversification found among early North American stone tools
Using new 3-D methods to analyze stone projectile points crafted by North America's earliest human inhabitants, Smithsonian scientists have found that these tools show evidence of a shift toward more experimentation about 12,500 years ago, following hundreds of years of consistent stone-tool production.

Novel thermal ablation system for transdermal drug delivery
The size of protein-based drug molecules prevents their absorption into the body when taken orally making injection (intramuscularly, subcutaneously, intravenously, etc.) the only effective delivery method.

NASA watching Typhoon Noru head west in Northwestern Pacific
NASA's Aqua satellite provided a near-infrared look at Typhoon Noru as it continued its western track at sea, far to the southeast of Japan.

Scientists regenerate retinal cells in mice in UW Medicine-led study
Scientists have succeeded in regenerating functional retinal cells in adult mice.

Understanding cell segregation mechanisms which help prevent cancer spread
Scientists have uncovered how cells are kept in the right place as the body develops, which may shed light on what causes invasive cancer cells to migrate.

Scientists propose new approach to hitting the gym
James Cook University sports scientists are warning that fatigue from weight training can carry over to endurance training and the two activities must be better coordinated to maximise athletes' performance.

Risk of suicide attempts in army units with history of suicide attempts
Does a previous suicide attempt in a soldier's U.S. Army unit increase the risk of other suicide attempts?

NASA sees Irwin before it weakened to a Tropical Storm
Irwin was still a hurricane when the NASA-NOAA Suomi NPP satellite passed over the Eastern Pacific Ocean on July 25.

Shedding light deeper into the human brain
The inner workings of the human brain have always been a subject of great interest.

Drug combination shows better tolerance and effectiveness in metastatic renal cell cancer
A novel combination of nivolumab plus ipilimumab for patients with metastatic kidney cancer is proving to be a more effective treatment with more durable tumor response than the two immunotherapies used separately.

Studies help understand why some people are so sure they're right
Two studies examine the personality characteristics that drive dogmatism in the religious and nonreligious.

Rice U. scientists map ways forward for lithium-ion batteries for extreme environments
Rice University materials scientists map the possibilities to improve commercial lithium-ion batteries expected to operate in extreme hot or cold.

As more adults are diagnosed with cystic fibrosis, radiologists look for patterns
Marked improvements have been made over the past few decades in managing cystic fibrosis, but as more adults are diagnosed with the disease radiologists can do more to monitor the wide spectrum of CF in adults, including nonclassic imaging findings, according to an article published in the July 2017 issue of the American Journal of Roentgenology (AJR).

Differences in subtypes of gastric cancer may determine prognosis and response to treatment
Molecular classification of the four distinct subtypes of gastric cancer could potentially shape tailored treatment options by helping to predict survival outcomes and patients' response to chemotherapy.

Research at Lake Baikal -- for the protection of a unique ecosystem
As part of the Helmholtz Russia Research Group LaBeglo, UFZ researchers are studying the impact of climate change and environmental toxins on the lake's fauna.

Do all people experience similar near-death-experiences?
New research examines how frequently and in what order different aspects of self-reported near-death-experiences occur.

Post-stroke patients reach terra firma with Wyss Institute's exosuit technology
In a new study published in Science Translational Medicine, a research team led by Conor Walsh collaborating with BU faculty members Terry Ellis, Lou Awad, and Ken Holt have demonstrated that exosuits can be used to improve walking after stroke -- a critical step in de-risking exosuit technology towards real-world clinical use.

No longer lost in translation
Mouse models have advanced our understanding of immune function and disease in many ways but they have failed to account for the natural diversity in human immune responses.

Time to drop 'complete the course' message for antibiotics
The deeply embedded message that patients should 'complete the course' of antibiotics to avoid antibiotic resistance is not backed by evidence and should be dropped, argue experts in The BMJ today.

Cave mazes
Analysis of caves in Israel deserts brings to light the ancient groundwater circulation of northwestern Arabia.

Humans identify emotions in the voices of all air-breathing vertebrates
Amphibians, reptiles, mammals -- all of them communicate via acoustic signals.

DAWN of a new day for stroke patients as study promises new options and a wider treatment window
Results of the first study showing some acute stroke patients could benefit from neuroendovascular surgery 6 to 24 hours after a stroke will be presented at the Society of NeuroInterventional Surgery's (SNIS) 14th Annual Meeting. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to