How much testosterone is too much for women after menopause?
2014-06-10
CLEVELAND, Ohio (June 10, 2014)—Testosterone supplementation for women is a hot topic. A new pharmacokinetics study of a brand of testosterone cream for women approved in Western Australia has been published online in Menopause, the journal of The North American Menopause Society (NAMS). For women after menopause, it took 5 mg, the lowest dose of this product, to raise testosterone back to a premenopause level.
"In the United States we do not yet have an approved testosterone product designed for women," says NAMS Executive Director Margery Gass, MD. "As a result, American ...
Technology using microwave heating may impact electronics manufacture
2014-06-10
CORVALLIS, Ore. – Engineers at Oregon State University have successfully shown that a continuous flow reactor can produce high-quality nanoparticles by using microwave-assisted heating – essentially the same forces that heat up leftover food with such efficiency.
Instead of warming up yesterday's pizza, however, this concept may provide a technological revolution.
It could change everything from the production of cell phones and televisions to counterfeit-proof money, improved solar energy systems or quick identification of troops in combat.
The findings, recently ...
The real risks of growing up with bipolar parents
2014-06-10
This news release is available in French. Montreal, June 10, 2014 — Bipolar disorder (BD) is among the 10 most burdensome medical conditions, according to the World Health Organization. The disorder is known for its dramatic highs of extreme euphoria, racing thoughts and decreased need for sleep, as well as its profound lows of sadness and despair.
Because it is also associated with a heightened risk of suicide, substance abuse, hypersexuality, familial discord and aggressive behaviour, BD affects not just those suffering from it, but also those around them — especially ...
New permafrost is forming around shrinking Arctic lakes, but will it last?
2014-06-10
Researchers from McGill and the U.S. Geological Survey, more used to measuring thawing permafrost than its expansion, have made a surprising discovery. There is new permafrost forming around Twelvemile Lake in the interior of Alaska. But they have also quickly concluded that, given the current rate of climate change, it won't last beyond the end of this century.
Twelvemile Lake, and many others like it, is disappearing. Over the past thirty years, as a result of climate change and thawing permafrost, the lake water has been receding at an alarming rate. It is now 5 metres ...
Public oversight improves test scores in voucher schools
2014-06-10
EAST LANSING, Mich. --- Requiring private schools that receive public money to report student test scores improves academic achievement and ultimately enhances school choice, a Michigan State University scholar argues.
In a pioneering study, Joshua Cowen and colleagues found that voucher schools in Milwaukee saw a large jump in math and reading scores the year after a new law required them to release the results. During the four years before the law was enacted, math and reading scores declined or remained stagnant.
The study, which appears in the journal Educational ...
'All systems go' for a paralyzed person to kick off the World Cup
2014-06-10
This news release is available in German.
According to researchers in the Walk Again Project, all systems are go for a bold demonstration of neuroscience and cognitive technology in action: On June 12, during the opening of the FIFA 2014 World Cup in Brazil, a paralyzed person wearing a brain-controlled robotic exoskeleton is expected to make the first kick of the football championship.
The Walk Again Project is an international collaboration of more than one hundred scientists, led by Prof. Miguel Nicolelis of Duke University and the International Institute for ...
Snowballs to soot: The clumping density of many things seems to be a standard
2014-06-10
Particles of soot floating through the air and comets hurtling through space have at least one thing in common: 0.36. That, reports a research group at the National Institute of Standards and Technology (NIST), is the measure of how dense they will get under normal conditions, and it's a value that seems to be constant for similar aggregates across an impressively wide size range from nanometers to tens of meters.*
NIST hopes the results will help in the development of future measurement standards to aid climate researchers and others who need to measure and understand ...
Charging portable electronics in 10 minutes
2014-06-10
RIVERSIDE, Calif. (http://www.ucr.edu) — Researchers at the University of California, Riverside Bourns College of Engineering have developed a three-dimensional, silicon-decorated, cone-shaped carbon-nanotube cluster architecture for lithium ion battery anodes that could enable charging of portable electronics in 10 minutes, instead of hours.
Lithium ion batteries are the rechargeable battery of choice for portable electronic devices and electric vehicles. But, they present problems. Batteries in electric vehicles are responsible for a significant portion of the vehicle ...
New study shows that oatmeal can help you feel full longer
2014-06-10
Chicago, IL, June 10, 2014: New research published in the Nutrition Journal reveals that calorie-for-calorie, even a serving of instant oatmeal is more filling than a ready-to-eat (RTE), oat-based cereal. Researchers found that eating a bowl of instant oatmeal for breakfast is more satiating and helps to manage hunger better than the same amount of calories from a leading oat-based, cold cereal, even when consumed in smaller portions than previously found.
Frank Greenway, M.D. and colleagues at the Pennington Biomedical Research Center at Louisiana State University ...
Limiting carbs could reduce breast cancer recurrence in women with positive IGF1 receptor
2014-06-10
Lebanon, NH (June 10, 2014) - Dartmouth researchers have found that reducing carbohydrate intake could reduce the risk of breast cancer recurrence among women whose tumor tissue is positive for the IGF-1 receptor. The study, "Risk of Breast Cancer Recurrence Associated with Carbohydrate Intake and Tissue Expression of IGFI Receptor," will appear in the July issue of Cancer Epidemiology Biomarkers & Prevention.
"There is a growing body of research demonstrating associations between obesity, diabetes, and cancer risk," said lead author Jennifer A. Emond, an instructor in ...
Syracuse University geologists confirm oxygen levels of ancient oceans
2014-06-10
Geologists in the College of Arts and Sciences have discovered a new way to study oxygen levels in the Earth's oldest oceans.
Zunli Lu and Xiaoli Zhou, an assistant professor and Ph.D. student, respectively, in the Department of Earth Sciences, are part of an international team of researchers whose findings have been published by the journal Geology (Geological Society of America, 2014). Their research approach may have important implications for the study of marine ecology and global warming.
"More than 2.5 billion years ago, there was little to no oxygen in the oceans, ...
Lead abatement a wise economic, public health investment
2014-06-10
ANN ARBOR–Childhood lead exposure costs Michigan residents an estimated $330 million annually, and a statewide remediation program to eliminate the source of most lead poisoning would pay for itself in three years, according to a new report.
"Economic Impacts of Lead Exposure and Remediation in Michigan," compares the cost of four well-documented impacts of lead exposure--increased health care, increased crime, increase in special education, and decline in lifetime earnings--with the cost of lead abatement of high-risk homes.
The report is a collaboration between the ...
The whole truth
2014-06-10
CAMBRIDGE, MA -- Children learn a great deal about the world from their own exploration, but they also rely on what adults tell them. Studies have shown that children can figure out when someone is lying to them, but cognitive scientists from MIT recently tackled a subtler question: Can children tell when adults are telling them the truth, but not the whole truth?
Led by Laura Schulz, the Class of 1943 Career Development Associate Professor of Cognitive Science, the researchers found that not only can children make this distinction, but they can also compensate for incomplete ...
Wolves in wolves' clothing not all the same
2014-06-10
New research co-authored by University of Calgary alumna Erin Navid provides evidence that British Columbia's mainland wolves and coastal wolves are more distinct than previously believed.
The research, published today in the scientific journal BMC Ecology, affirms what Chester Starr, an elder from the Heiltsuk First Nation on BC's remote west coast, and his people have always known: 'Timber Wolves' occupy the mainland of the British Columbia coast and 'Coastal Wolves' live on the nearby islands. Starr's insight provided motivation for the study.
"What makes this study ...
Coho salmon: Pinks' and chums' eating cousin
2014-06-10
Newly published research co-authored by scientists at Simon Fraser University and the Raincoast Conservation Foundation shows juvenile coho salmon benefit from dining on the distant remains of their spawning pink and chum cousins.
While juvenile coho salmon feed directly on spawning pink and chum salmon carcasses and eggs, even coho with no direct contact with spawning pink and chum benefit from their nutrient contributions to stream ecosystems.
The new research shows that juvenile coho abundance is up to three times higher in streams with abundant pink and chum compared ...
Genetics reveal that reef corals and their algae live together but evolve independently
2014-06-10
New research reveals that Caribbean corals and the algae that inhabit them form a remarkably stable relationship -- new knowledge that can serve as an important tool in preserving and restoring vital reef-building corals. A scientific paper describing these new findings by a team of marine biologists at Penn State University will be published as a cover article in Molecular Ecology on 10 June 2014.
Coral reefs are important for protecting shorelines, providing seafood, and generating millions of dollars in recreation revenue each year, but rising water temperatures due ...
Miriam Hospital study shows how to make statewide health campaigns more effective
2014-06-10
PROVIDENCE, R.I. - Researchers from The Miriam Hospital have found that adding evidence-based weight loss strategies to a statewide wellness campaign improves weight loss outcomes among participants. The study and its findings are published online in advance of print in the American Journal of Public Health.
Lead researcher Tricia Leahey, Ph.D., and her colleagues chose to conduct a study among participants in Rhode Island's annual, three-month statewide health campaign. Called Shape Up Rhode Island (SURI), the campaign was founded in 2005 and takes a grass roots approach ...
NASA sees Tropical Storm Christina's birth and severe weather in US South
2014-06-10
NASA's Aqua satellite captured a picture of newborn Tropical Storm Cristina on June 10, marking the birth date of the Eastern Pacific Ocean's third tropical storm of the season. The same image showed the severe weather affecting the south central U.S.
Although not at the coastline, the National Hurricane Center said that Cristina is near enough to cause dangerous surf conditions.
According to the National Hurricane Center (NHC), swells generated by Cristina are affecting portions of the south-central coast of western Mexico. These swells will likely continue through ...
NASA-NOAA's Suomi NPP satellite spots Arabian Sea tropical cyclone
2014-06-10
Tropical Cyclone 02A formed in the Arabian Sea as NASA-NOAA's Suomi NPP satellite passed overhead and captured a visible photo of the storm, spotting strongest storms south of its center.
On June 10 at 08:21 UTC (4:21 a.m. EDT), when Suomi NPP passed over 02A, the Visible Infrared Imaging Radiometer Suite (VIIRS) instrument aboard captured a visible image of the storm. VIIRS collects visible and infrared imagery and global observations of land, atmosphere, cryosphere and oceans.
In the image, Tropical Storm 02A appeared slightly elongated but satellite data shows that ...
NASA's SDO sees a summer solar flare
2014-06-10
The sun emitted a significant solar flare, peaking at 7:42 a.m. EDT on June 10, 2014. NASA's Solar Dynamics Observatory – which typically observes the entire sun 24 hours a day -- captured images of the flare.
Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground. However, when intense enough, they can disturb the atmosphere in the layer where GPS and communications signals travel.
To see how this event may affect Earth, please visit NOAA's Space Weather Prediction ...
Inside the adult ADHD brain
2014-06-10
CAMBRIDGE, MA -- About 11 percent of school-age children in the United States have been diagnosed with attention deficit hyperactivity disorder (ADHD). While many of these children eventually "outgrow" the disorder, some carry their difficulties into adulthood: About 10 million American adults are currently diagnosed with ADHD.
In the first study to compare patterns of brain activity in adults who recovered from childhood ADHD and those who did not, MIT neuroscientists have discovered key differences in a brain communication network that is active when the brain is at ...
Mammography has led to fewer late-stage breast cancers, U-M study finds
2014-06-10
ANN ARBOR, Mich. — In the last 30 years, since mammography was introduced, late-stage breast cancer incidence has decreased by 37 percent, a new study from the University of Michigan Comprehensive Cancer Center finds.
The analysis takes into account an observed underlying trend of increased breast cancer incidence present since the 1940s, a sort of inflation rate for breast cancer.
Researchers looked at early-stage and late-stage breast cancer diagnoses between 1977-1979, before mammography became popular, and compared it to diagnoses between 2007-2009. Based on trends ...
A plan to share the carbon budget burden
2014-06-10
PROVIDENCE, R.I. [Brown University] — Climate change is an issue of urgent international importance, but for 20 years, the international community has been unable to agree on a coordinated way to reduce greenhouse gas emissions. In a "Perspective" piece published in the June issue of Nature Climate Change, J. Timmons Roberts, the Ittleson Professor of Environmental Studies and Sociology, proposes a four-step compromise toward emissions reduction that offers "effectiveness, feasibility, and fairness."
Their proposal comes as another major United Nations meeting on climage ...
Soldiers who kill in combat less likely to abuse alcohol
2014-06-10
WASHINGTON, D.C. (June 10, 2014)—It's no secret that combat experiences are highly stressful and can contribute to instances of post-traumatic stress disorder and depression among soldiers post-deployment. It also comes as no surprise that many soldiers afflicted with these conditions abuse alcohol in an attempt to self-medicate.
But new research coauthored by Cristel Russell, an associate professor of marketing with American University's Kogod School of Business, and researchers with the Walter Reed Army Institute of Research finds that the most traumatic of all combat ...
New biometric watches use light to non-invasively monitor glucose, dehydration, pulse
2014-06-10
WASHINGTON, June 9—Monitoring a patient's vital signs and other physiological parameters is a standard part of medical care, but, increasingly, health and fitness-minded individuals are looking for ways to easily keep their own tabs on these measurements. Enter the biometric watch.
In a pair of papers published in The Optical Society's (OSA) open-access journal Biomedical Optics Express, groups of researchers from the Netherlands and Israel describe two new wearable devices that use changing patterns of scattered light to monitor biometrics: one tracks glucose concentration ...
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