Viruses associated with coral epidemic of 'white plague'
2013-09-13
CORVALLIS, Ore. – They call it the "white plague," and like its black counterpart from the Middle Ages, it conjures up visions of catastrophic death, with a cause that was at first uncertain even as it led to widespread destruction – on marine corals in the Caribbean Sea.
Now one of the possible causes of this growing disease epidemic has been identified – a group of viruses that are known as small, circular, single-strand DNA (or SCSD) viruses. Researchers in the College of Science at Oregon State University say these SCSD viruses are associated with a dramatic increase ...
Rates of physical and sexual child abuse appear to have declined; child neglect shows no decline
2013-09-13
WASHINGTON -- Rates of physical and sexual abuse of children have declined over the last 20 years, but for reasons not fully understood, says a new report from the Institute of Medicine. Yet, reports of psychological and emotional child abuse have risen in the same period, and data vary significantly as to whether child neglect is increasing, decreasing, or remaining constant. However, determining the incidence of child abuse and neglect presents a number of challenges, because cases could be underreported and definitions vary among entities that collect such information. ...
Are women less corrupt?
2013-09-13
Women are more likely than men to disapprove of -- and less likely to participate in -- political corruption, but only in countries where corruption is stigmatized, according to new political science research from Rice University.
"'Fairer Sex' or Purity Myth? Corruption, Gender and Institutional Context" finds that women are less tolerant of corrupt behavior, but only in democratic governments, where appropriating public policy for private gain is typically punished by voters and courts.
"The relationship between gender and corruption appears to depend on context," ...
Twister history: FSU researchers develop model to correct tornado records for better risk assessment
2013-09-13
TALLAHASSEE, Fla. — In the wake of deadly tornadoes in Oklahoma this past spring, Florida State University researchers have developed a new statistical model that will help determine whether the risk of tornadoes is increasing and whether they are getting stronger.
Climatologists have been hampered in determining actual risks by what they call a population bias: That is, the fact that tornadoes have traditionally been underreported in rural areas compared to cities.
Now, FSU geography Professor James B. Elsner and graduate student Laura E. Michaels have outlined a method ...
Underlying ocean melts ice shelf, speeds up glacier movement
2013-09-13
Warm ocean water, not warm air, is melting the Pine Island Glacier's floating ice shelf in Antarctica and may be the culprit for increased melting of other ice shelves, according to an international team of researchers.
"We've been dumping heat into the atmosphere for years and the oceans have been doing their job, taking it out of the air and into the ocean," said Sridhar Anandakrishnan, professor of geosciences, Penn State. "Eventually, with all that atmospheric heat, the oceans will heat up."
The researchers looked at the remote Pine Island Glacier, a major outlet ...
Scripps Florida scientists pinpoint proteins vital to long-term memory
2013-09-13
JUPITER, FL – September 12, 2013 – Scientists from the Florida campus of The Scripps Research Institute (TSRI) have found a group of proteins essential to the formation of long-term memories.
The study, published online ahead of print on September 12, 2013 by the journal Cell Reports, focuses on a family of proteins called Wnts. These proteins send signals from the outside to the inside of a cell, inducing a cellular response crucial for many aspects of embryonic development, including stem cell differentiation, as well as for normal functioning of the adult brain.
"By ...
Voyager 1 spacecraft reaches interstellar space
2013-09-13
University of Iowa space physicist Don Gurnett says there is solid evidence that NASA's Voyager 1 spacecraft has become the first manmade object to reach interstellar space, more than 11 billion miles distant and 36 years after it was launched.
The finding is reported in a paper published in the Sept. 12 online issue of the journal Science.
"On April 9, the Voyager 1 Plasma Wave instrument, built at the UI in the mid-1970s, began detecting locally generated waves, called electron plasma oscillations, at a frequency that corresponds to an electron density about 40 times ...
Voyager 1 spotted from Earth with NRAO's VLBA and GBT telescopes
2013-09-13
Astronomers using the National Science Foundation's (NSF) Very Long Baseline Array (VLBA) and Green Bank Telescope (GBT) spotted the faint radio glow from NASA's famed Voyager 1 spacecraft -- the most distant man-made object.
According to NASA's Jet Propulsion Laboratory (JPL), the VLBA imaged the signal from Voyager 1's main transmitter after the spacecraft had already passed beyond the edge of the heliosphere, the bubble of charged particles from the Sun that surrounds our Solar System.
Using NASA's Deep Space Network, JPL continually tracks Voyager and calculates ...
Toxic methylmercury-producing microbes more widespread than realized
2013-09-13
Microbes that live in rice paddies, northern peat bogs and other previously unexpected environments are among the bacteria that can generate highly toxic methylmercury, researchers at Oak Ridge National Laboratory and the Smithsonian Environmental Research Center have learned.
This finding, published in Environmental Science and Technology, explains why deadly methylated mercury is produced in areas where the neurotoxin's presence has puzzled researchers for decades. Methylmercury — the most dangerous form of mercury — damages the brain and immune system and is especially ...
Trans-Nino years could foster tornado super outbreaks
2013-09-13
Alexandria, VA – One tornado can be damaging enough; severe weather systems that spawn hundreds of deadly tornadoes in super-outbreaks pose special challenges to the scientific and emergency management communities. Now, scientists have identified certain conditions in the Pacific Ocean that may lead to super-outbreaks over the U.S.' tornado alley.
Researchers are trying to determine if Trans-Niño years, which mark the onset or ebbing of El Niño and La Niña, are the main culprits behind the deadly super-outbreaks. According to the study, fueled by a powerfully interconnected ...
Esteem issues determine how people put their best Facebook forward
2013-09-13
How social media users create and monitor their online personas may hint at their feelings of self-esteem and self-determination, according to an international team of researchers.
"The types of actions users take and the kinds of information they are adding to their Facebook walls and profiles are a refection of their identities," said S. Shyam Sundar, Distinguished Professor of Communications and co-director of the Media Effects Research Laboratory, Penn State. "You are your Facebook, basically, and despite all its socialness, Facebook is a deeply personal medium."
People ...
Research shows denser seagrass beds hold more baby blue crabs
2013-09-13
When it comes to nursery habitat, scientists have long known that blue crabs prefer seagrass beds compared to open areas in the same neighborhood.
A new study by researchers at William & Mary's Virginia Institute of Marine Science refines that knowledge, showing that it's not just the presence of a seagrass bed that matters to young crabs, but also its quality—with denser beds holding exponentially more crabs per square meter than more open beds where plants are separated by small patches of mud or sand.
The study, led by VIMS graduate student Gina Ralph, appeared recently ...
Exposure/ritual prevention therapy boosts antidepressant treatment of OCD
2013-09-13
NIMH grantees have demonstrated that a form of behavioral therapy can augment antidepressant treatment of obsessive compulsive disorder (OCD) better than an antipsychotic. The researchers recommend that this specific form of cognitive behavior therapy (CBT) – exposure and ritual prevention – be offered to OCD patients who don't respond adequately to treatment with an antidepressant alone, which is often the case. Current guidelines favor augmentation with antipsychotics.
In the controlled trial with 100 antidepressant-refractory OCD patients, 80 percent of those who ...
Medicare Center of Excellence Policy may limit minority access to weight-loss surgery
2013-09-13
Safety measures intended to improve bariatric surgery outcomes may impede obese minorities' access to care. This is according to a new research letter published online in the September 12 issue of JAMA which compares rates of bariatric (weight-loss) surgery for minority Medicare vs. non-Medicare patients before and after implementation of a Medicare coverage policy. The policy limits Medicare patients seeking bariatric surgery to high-volume hospitals designated as centers of excellence. Led by faculty from the Johns Hopkins Bloomberg School of Public Health, the researchers ...
Revised Medicaid policy could reduce unintended pregnancies, save millions in health costs
2013-09-13
PITTSBURGH, Sept. 12, 2013 – A revised Medicaid sterilization policy that removes logistical barriers, including a mandatory 30-day waiting period, could potentially honor women's reproductive decisions, reduce the number of unintended pregnancies and save $215 million in public health costs each year, according to researchers at the University of Pittsburgh School of Medicine. Their findings, published today in the journal Contraception, support growing evidence for the need to revisit a national policy that disproportionately affects low-income and minority women at high ...
NASA's Terra satellite spots Hurricane Humberto's cloud-filled eye
2013-09-13
The MODIS instrument aboard NASA's Terra satellite captured a visible image of Hurricane Humberto that showed it's eye was cloud-filled. Humberto was moving away from the Cape Verde Islands in the Atlantic Ocean.
On Thursday, Sept. 12 at 11 a.m. EDT/1500 UTC, Hurricane Humberto has maximum near 85 mph/140 kph, and the National Hurricane Center (NHC) expects gradual weakening later in the day. The center of Hurricane Humberto was located near latitude 21.8 north and longitude 29.0 west, about 515 miles/830 km northwest of the Cape Verde Islands. Humberto is moving toward ...
Bacteria responsible for gum disease facilitates rheumatoid arthritis
2013-09-13
LOUISVILLE, Ky. - Does gum disease indicate future joint problems? Although researchers and clinicians have long known about an association between two prevalent chronic inflammatory diseases - periodontal disease and rheumatoid arthritis (RA) - the microbiological mechanisms have remained unclear.
In an article published today in PLOS Pathogens, University of Louisville School of Dentistry Oral Health and Systemic Diseases group researcher Jan Potempa, PhD, DSc, and an international team of scientists from the European Union's Gums and Joints project have uncovered how ...
TheSkyNet -- T2 is born
2013-09-13
TheSkyNet is celebrating its two year anniversary today with the official launch of a new research project, as well as a range of improvements and new features to make contributing to astronomical research at home more enjoyable, and even easier.
Launched on September 13th 2011, theSkyNet is a community computing project dedicated to astronomy, initiated by the International Centre of Radio Astronomy Research (ICRAR) in Perth, Western Australia.
By using the idle processing power of thousands of computers connected to the Internet, theSkyNet simulates a powerful single ...
Novel vaccine reduces shedding of genital herpes virus
2013-09-13
Sexually transmitted infection researchers potentially have reached a milestone in vaccine treatment for genital herpes, according to a report to be presented at the Interscience Conference on Antimicrobial Agents and Chemotherapy in Denver, Colo., on today, Sept. 12.
Kenneth H. Fife, M.D., is the principal investigator for the IU School of Medicine clinical study of the vaccine for herpes simplex virus type 2 called GEN-003. According to an interim analysis, the experimental protein subunit vaccine made by Genocea Biosciences of Cambridge, Mass., effectively reduces ...
Youth more likely to be bullied at schools with anti-bullying programs, UTA researcher finds
2013-09-13
Anti-bullying initiatives have become standard at schools across the country, but a new UT Arlington study finds that students attending those schools may be more likely to be a victim of bullying than children at schools without such programs.
The findings run counter to the common perception that bullying prevention programs can help protect kids from repeated harassment or physical and emotional attacks.
"One possible reason for this is that the students who are victimizing their peers have learned the language from these anti-bullying campaigns and programs," said ...
Carbon farming schemes should consider multiple cobenefits
2013-09-13
Carbon markets and related international schemes that allow payments to landholders for planting trees, sometimes called carbon farming, are intended to support sequestration of carbon from the atmosphere. But they will have harmful effects, such as degrading ecosystems and causing food supply problems, if other benefits and disbenefits from revegetating agricultural landscapes are not also taken into account in land-use decisions, according to an article published in the October issue of BioScience.
Brenda B. Lin of the Australian Commonwealth Scientific and Industrial ...
New system uses nanodiamonds to deliver chemotherapy drugs directly to brain tumors
2013-09-12
Researchers at UCLA's Jonsson Comprehensive Cancer Center have developed an innovative drug-delivery system in which tiny particles called nanodiamonds are used to carry chemotherapy drugs directly into brain tumors. The new method was found to result in greater cancer-killing efficiency and fewer harmful side effects than existing treatments.
The research, published in the advance online issue of the peer-reviewed journal Nanomedicine: Nanotechnology, Biology and Medicine, was a collaboration between Dean Ho of the UCLA School of Dentistry and colleagues from the ...
'Incidental findings' rare but significant events in pediatric CT scans
2013-09-12
(SACRAMENTO, Calif.) — The largest study of computed tomographic (CT) scans taken in emergency departments across the country for children with head injuries describes the prevalence of "incidental findings" — results that were not expected from the injury — and categorizes them by urgency.
The article, titled "Incidental findings in children with blunt head trauma evaluated with cranial CT scans," was published in the August issue of Pediatrics, and provides a context for doctors in emergency departments who encounter these situations.
"Incidental findings are a ...
Brain atrophy linked with cognitive decline in diabetes
2013-09-12
New research has shown that cognitive decline in people with Type 2 Diabetes is likely due to brain atrophy, or shrinkage, that resembles patterns seen in the early stages of Alzheimer's disease.
Dr Chris Moran and Associate Professor Velandai Srikanth of Monash University led the first large-scale study to compare brain scans and cognitive function between people with and without Type 2 Diabetes Mellitus (T2DM). They found that brain atrophy, rather than cerebrovascular lesions, was likely the primary reason for cognitive impairment associated with T2DM.
The World ...
Terahertz time-domain spectroscopy for oil and gas detection
2013-09-12
A greater understanding of the evolutionary stage of kerogen for hydrocarbon generation would play a role in easing the world's current energy problem. Professor ZHAO Kun and his group from the Key Laboratory of Oil and Gas Terahertz Spectrum and Photoelectric Detection (CPCIF, China University of Petroleum, Beijing) set out to tackle this problem. After five years of innovative research, they have developed terahertz time-domain spectroscopy (THz-TDS) as an effective method to detect the generation of oil and gas from kerogen. Their work, entitled "Applying terahertz time-domain ...
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