The results of a new study led by George Washington University Professor Tianshu Li provide direct computational evidence that nucleation of ice in small droplets is strongly size-dependent, an important conclusion in understanding water's behavior at the nanoscale. The formation of ice at the nanoscale is a challenging, basic scientific research question whose answer also has important implications for climate research and other fields. The crystallization of ice from supercooled water is generally initiated by a process called nucleation. Because of the speed and size ...

When infections occur in the body, stem cells in the blood often jump into action by multiplying and differentiating into mature immune cells that can fight off illness. But repeated infections and inflammation can deplete these cell populations, potentially leading to the development of serious blood conditions such as cancer. Now, a team of researchers led by biologists at the California Institute of Technology (Caltech) has found that, in mouse models, the molecule microRNA-146a (miR-146a) acts as a critical regulator and protector of blood-forming stem cells (called ...

DURHAM, N.C. -- Duke University engineers have developed a novel method for producing clean hydrogen, which could prove essential to weaning society off of fossil fuels and their environmental implications. While hydrogen is ubiquitous in the environment, producing and collecting molecular hydrogen for transportation and industrial uses is expensive and complicated. Just as importantly, a byproduct of most current methods of producing hydrogen is carbon monoxide, which is toxic to humans and animals. The Duke engineers, using a new catalytic approach, have shown in ...

Researchers at USC have found that a class of pharmaceuticals can both prevent and treat Alzheimer's Disease in mice. The drugs, known as "TSPO ligands," are currently used for certain types of neuroimaging. "We looked at the effects of TSPO ligand in young adult mice when pathology was at an early stage, and in aged mice when pathology was quite severe," said lead researcher Christian Pike of the USC Davis School of Gerontology. "TSPO ligand reduced measures of pathology and improved behavior at both ages." The team's findings were published online by the Journal ...

(Santa Barbara, California) –– About 12,800 years ago when the Earth was warming and emerging from the last ice age, a dramatic and anomalous event occurred that abruptly reversed climatic conditions back to near-glacial state. According to James Kennett, UC Santa Barbara emeritus professor in earth sciences, this climate switch fundamentally –– and remarkably –– occurred in only one year, heralding the onset of the Younger Dryas cool episode. The cause of this cooling has been much debated, especially because it closely coincided with the abrupt extinction of the majority ...

URBANA - As many as 35 percent of Mexican young adults may have a genetic predisposition for obesity, said a University of Illinois scientist who conducted a study at the Universidad Autónoma de San Luis Potosί. "The students who inherited genetic risk factors from both parents were already 15½ pounds heavier and 2 inches bigger around the waist than those who hadn't. They also had slightly higher fasting glucose levels," said Margarita Teran-Garcia, a U of I professor of food science and human nutrition. In the study, 251 18- to 25-year-olds were tested for risk ...

A new report from the International Union for Conservation of Nature (IUCN) highlights the plight of great apes in the forest concessions of Central Africa and recommends actions to improve protection for gorillas and chimpanzees in these mixed-used landscapes, according to authors from the Wildlife Conservation Society, WWF, IUCN, Lincoln Park Zoo and Washington University. While most conservation efforts are focused on protecting great apes and other species in Central Africa's protected areas, a significant area of the region's rainforest used by gorillas and chimpanzees ...

Ninety-seven teams from 28 Colorado schools participated in today's car competitions hosted by the U.S. Department of Energy's National Renewable Energy Laboratory (NREL). The student teams raced solar and lithium ion powered vehicles they designed and built themselves. Trophies for the fastest lithium-ion powered model cars were given to Colorado students from University School, Greeley, "Lucky Charms," first place; Southern Hills Middle School, Boulder, "Fat Albert,", second place; and Southern Hills, "Green Spartan," third place. Three lithium-ion design trophies ...

Environment is not the only factor in shaping regulatory patterns -- and it might not even be the primary factor, according to a new Rice University study that looks at how cells' protein networks relate to a bacteria's genome. The Rice lab of computer scientist Luay Nakhleh reported in the Proceedings of the National Academy of Sciences that when environmental factors are eliminated from an evolutionary model, mutations and genetic drift can give rise to the patterns that appear. They studied changes that show up in regulatory networks that determine the organism's ...

VIDEO: This animation of imagery from NOAA's GOES-13 satellite shows the movement of storm systems in the south central United States on May 20, 2013. Warm, moist gulf air flowing across... Click here for more information. On May 20, 2013, NASA and NOAA satellites observed the system that generated severe weather in the south central United States and spawned the Moore, Okla., tornado. The tornado that struck Moore on the afternoon of Monday, May 20, was an F-4 tornado ...

AURORA, Colo. (May 21, 2013) – A paper recently published in the New England Journal of Medicine and co-written by physicians and scientists at the University of Colorado School of Medicine finds that an important genetic risk factor for pulmonary fibrosis can be used to identify individuals at risk for this deadly lung disease. Researchers looked at a fairly common variant of the gene for mucin-5B, a protein that is a component of the mucous produced by the bronchial tubes. While this variant of the MUC5B gene is fairly common, pulmonary fibrosis is an uncommonly reported ...

Boston, Mass.—By studying the roles two proteins, thrombospondin-1 and prosaposin, play in discouraging cancer metastasis, a trans-Atlantic research team has identified a five-amino acid fragment of prosaposin that significantly reduces metastatic spread in mouse models of prostate, breast and lung cancer. The findings suggest that a prosaposin-based drug could potentially block metastasis in a variety of cancers. The study team, led by Randolph Watnick, PhD, at Boston Children's Hospital, Vivek Mittal, PhD, at Weill Cornell Medical College and Lars Akslen, MD, PhD, ...

AURORA, Colo. (May 21, 2013) – Research into genetic features of pulmonary fibrosis by physicians and scientists at the University of Colorado School of Medicine may lead to improved treatment of this deadly lung disease, according to a paper published online by JAMA. The study found that a particular genetic variation helps predict survival in some cases of pulmonary fibrosis, a chronic progressive disease with a median survival of three years. As a result of the study, researchers may want to consider including genetic testing in future clinical trials. The researchers ...

CINCINNATI—Using the Department of Defense Serum Repository (DoDSR), University of Cincinnati (UC) researchers have identified a number of biomarkers for inflammatory bowel disease (IBD), which could help with earlier diagnosis and intervention in those who have not yet shown symptoms. This finding, the first of its kind and led by UC's Bruce Yacyshyn, MD, is being presented via podium presentation by staff from Walter Reed National Military Medical Center at Digestive Disease Week 2013, being held May 18-21 in Orlando, Fla. The DoDSR is a biological repository operated ...

Boston – Adenotonsillectomy, or the removal of the adenoids and tonsils, is performed 500,000 times a year in the United States, often as a treatment for children with obstructive sleep apnea. However, the procedure's ability to improve a child's attention and executive functioning, behavior, sleep apnea symptoms, and quality of life has not been rigorously evaluated until now. A study led by Susan Redline, MD, MPH, director of the Program in Sleep and Cardiovascular Medicine and Associate Clinic Director of the Division of Sleep Medicine at Brigham and Women's Hospital ...

21 May 2013, Paris, France: One-year results from SOURCE XT – one of the largest, post-approval transcatheter aortic valve implantation (TAVI) registries to-date – reported today at EuroPCR 2013 show good clinical outcomes in routine clinical practice, with high rates of device success for all access approaches, valve sizes and delivery systems. The SOURCE XT Post-Approval Study followed up 2688 consecutively enrolled patients (mean age 81.5 years) undergoing TAVI with the Sapien XT heart valve at 93 centres in 17 countries between July 2010 and October 2011. Access was ...

21 May 2013, Paris, France: The Orsiro stent, which is a novel stent platform eluting sirolimus from a biodegradable polymer, demonstrated non-inferiority to the Xience Prime everolimus-eluting stent for the primary angiographic endpoint of in-stent late lumen loss at nine months in the results of an imaging substudy reported at EuroPCR 2013 today. The BIOFLOW-II substudy used intravascular ultrasound (IVUS) and optical coherence tomography (OCT) to quantitatively assess neointimal hyperplasia and stent apposition at nine months after treating patients with symptomatic ...

Using a "patient monitoring" device attached to a whale entangled in fishing gear, scientists showed for the first time how fishing lines changed a whale's diving and swimming behavior. The monitoring revealed how fishing gear hinders whales' ability to eat and migrate, depletes their energy as they drag gear for months or years, and can result in a slow death. The scientists in this entanglement response suction-cupped a cellphone-size device called a Dtag to a two-year-old female North Atlantic right whale called Eg 3911. The Dtag, developed at Woods Hole Oceanographic ...

CHESTNUT HILL, Mass. -- Is it permissible to harm one to save many? Those who tend to say "yes" when faced with this classic dilemma are likely to be deficient in a specific kind of empathy, according to a report published in the scientific journal PLOS ONE. Philosophers and psychologists have long argued about whether there is one "right" answer to such moral questions, be it utilitarian ethics, which advocates saving as many as possible, even if it requires personally harming an individual, or non-utilitarian principles, which mandate strict adherence to rules like ...

Parents must plan for summer parenting time in Oregon Article provided by Evashevski, Elliott, Cihak & Hediger, PC Visit us at http://www.eechlaw.com The academic school year is almost finished and many divorced or separated parents will need to adjust their routines. In Oregon, the summer months are a great time to go camping or enjoy the scenic coastline with children, but disputes over when vacations occur can be common. An Oregon child parenting time order that allows for every other weekend visits may allow a larger amount of time, such as one-half of the ...

DePuy Multi District Litigation in Ohio Article provided by Elk & Elk Co., Ltd. Visit us at http://www.elkandelkcanton.com/ Lawsuits from all over the country regarding the defective hip replacement manufactured by DePuy Orthopedics Inc. are being heard in U.S. District Court for the Northern District of Ohio in Toledo. The complaints have been consolidated in a multidistrict litigation (MDL) designed to speed up the legal process for plaintiffs and defendants and handle the many thousands of suits in a cost-effective manner. DePuy, which makes a variety of ...

Getting divorced in Arizona? You need to factor in taxes Article provided by Viles Law Office, LLC Visit us at http://www.vileslawoffices.com/ To paraphrase an old adage, the only certainties in life are death and taxes. At the end of your marriage, taxes are probably the last thing on your mind. But, when it comes time to split up the marital property, taking tax considerations into account can save you thousands in the long run. The face value of assets does not always accurately reflect their true worth Arizona is a community property state, which means ...

Attempts to limit construction defect lawsuits in Colorado shot down Article provided by Abrams & Associates, LLC Visit us at http://www.abramslaw.net Colorado laws have created a real problem for construction companies and homebuilders in the state. There is a high demand for real estate in the Denver metro area, especially for condominiums and townhomes located near popular light-rail stations. Transit-oriented developments (TODs) are not a new concept in this country and, a few years ago, the city and county of Denver began developing these living spaces ...

The words every parent dreads hearing while strolling the Champs-Elysees with their offspring: "Is there a McDonald's around here? I'm borrrrred!" You've scrimped and saved for months (maybe years) to bestow on your children something your parents weren't able to provide for you: a priceless education and exposure to the Art, Architecture and Cuisine of the great cities of Europe. But your kids just want to text their friends and hang out at a shopping mall. What can parents do to enthuse their young ones regarding this once-in-a-lifetime experience? "Educate ...

Shantytown, the Van Zant legacy continues... Following the successful release on "Redneck" in April, Shanytown releases "Peace of Mind". Any true fan of Rock & Roll can tell you about the Van Zant family of Jacksonville, Florida (known as the "First Family of Southern Rock"). They have produced three-major bands: "Lynyrd Skynyrd", "38 Special" and the "Johnny Van Zant Band". Now there is a proud new addition from Southern Rock's first family, a great new band called "Shantytown". And the Van ...