New cancer cases rise globally, but death rates are declining in many countries
2015-05-28
SEATTLE -- New cases of virtually all types of cancer are rising in countries globally - regardless of income - but the death rates from cancer are falling in many countries, according to a new analysis of 28 cancer groups in 188 countries.
Thanks to prevention and treatment, progress has been made in fighting certain cancers, such as childhood leukemia. But researchers found that of all the cancers studied, there was just one - Hodgkin lymphoma - where the number of new cases dropped between 1990 and 2013. Over the same period, age-standardized death rates for all cancers ...
Walnut twig beetle's origin and spread revealed in genetic studies
2015-05-28
DAVIS, Calif. - Even though the walnut twig beetle (WTB) is likely native to Arizona, California, and New Mexico, it has become an invasive pest to economically and ecologically important walnut trees throughout much of the Western and into the Eastern United States. Through genetic testing, researchers from the Pacific Southwest Research Station (PSW) and partners from the University of California, Riverside and U.S. Forest Service Forest Health Protection have characterized the beetle's geographic distribution and range expansion. Results were recently published in the ...
Protecting women from multiple sclerosis
2015-05-28
CHICAGO --- An innocent mistake made by a graduate student in a Northwestern Medicine lab (she accidentally used male mice instead of female mice during an experiment) has led scientists to a novel discovery that offers new insight into why women are more likely than men to develop autoimmune diseases such as multiple sclerosis (MS).
The finding, detailed in a paper published in The Journal of Immunology, focuses on a type of white blood cell, the innate lymphoid cell, that exhibits different immune activities in males versus females.
MS is a disease that affects the ...
Acquiring 'perfect' pitch may be possible for some adults
2015-05-28
If you're a musician, this sounds too good to be true: University of Chicago psychologists have been able to train some adults to develop the prized musical ability of absolute pitch, and the training's effects last for months.
Absolute pitch, commonly known as "perfect pitch," is the ability to identify a note by hearing it. The ability is considered remarkably rare, estimated to be less than one in 10,000 individuals. It has always been a very desired ability among musicians, especially since several famous composers, including Mozart, reportedly had it. The assumption ...
Ancient DNA may provide clues into how past environments affected ancient populations
2015-05-28
AUSTIN, Texas -- A new study by anthropologists from The University of Texas at Austin shows for the first time that epigenetic marks on DNA can be detected in a large number of ancient human remains, which may lead to further understanding about the effects of famine and disease in the ancient world.
The field of epigenetics looks at chemical modifications to DNA, known as epigenetic marks, that influence which genes are expressed -- or turned on or off. Some epigenetic marks stay in place throughout a person's life, but others may be added or removed in response to ...
Ancient microbe-sediment systems of the barberton greenstone belt, South Africa
2015-05-28
Boulder, Colo., USA - The modern sedimentary environment contains a diversity of microbes that interact very closely with the sediments, sometimes to such an extent that they form "biosediments." But can such a phenomenon be fossilized? How far back in time can "biosedimentation" be traced? In this study for Geology, Frances Westall and colleagues examine some of the oldest rocks on Earth -- in the Barberton Greenstone Belt, South Africa (older than 3.3 billion years), to answer this question.
Westall and colleagues use multi-scale methods to document the simultaneous ...
Not making enough money? Check your attitude
2015-05-28
WASHINGTON - Holding cynical beliefs about others may have a negative effect on your income according to research published by the American Psychological Association.
"While previous research has associated cynicism with detrimental outcomes across a wide range of spheres of life, including physical health, psychological well-being and marital adjustment, the present research has established an association between cynicism and individual economic success," says Olga Stavrova, PhD, a research associate at the Institute of Sociology and Social Psychology, University of ...
Spinning a new version of silk
2015-05-28
CAMBRIDGE, Mass--After years of research decoding the complex structure and production of spider silk, researchers have now succeeded in producing samples of this exceptionally strong and resilient material in the laboratory. The new development could lead to a variety of biomedical materials -- from sutures to scaffolding for organ replacements -- made from synthesized silk with properties specifically tuned for their intended uses.
The findings are published this week in the journal Nature Communications by MIT professor of civil and environmental engineering (CEE) ...
Challenges ahead for European clinical trials
2015-05-28
Lugano, 28 May 2015. The European Society for Medical Oncology (ESMO), in collaboration with the European Organisation for Research and Treatment of Cancer (EORTC), expressed their views on the EU Clinical Trials Regulation in an official position paper recently published in Annals of Oncology1.
"The Clinical Trials Regulation (CTR) represents one of the most important changes in the field of clinical trials in the last decade, however it still contains unresolved issues that may prove to be challenging for research in Europe and for implementation by Member States," ...
High rates of MRSA transmission found between nursing home residents, healthcare workers
2015-05-28
NEW YORK (May 28, 2015) - Healthcare workers frequently contaminate their gloves and gowns during every day care of nursing homes residents with drug resistant Staphylococcus aureus or MRSA, according to a new study. The findings were published online today in Infection Control & Hospital Epidemiology, the journal of the Society for Healthcare Epidemiology of America.
"One in four nursing home residents harbor MRSA in some settings. We know that healthcare workers serve as a vector for MRSA transmission from one resident to another in settings such as nursing homes," ...
Study shows treatment for genetically caused emphysema is effective
2015-05-28
May 28, 2015 Toronto - A landmark clinical study in the Lancet provides convincing evidence that a frequently overlooked therapy for genetically-caused emphysema is effective and slows the progression of lung disease.
Alpha-1 antitrypsin deficiency is an inherited disorder that can cause emphysema even without exposure to tobacco smoke. Alpha-1 antitrypsin (AAT) is a protein made in the liver that protects the lungs. With this disorder, the AAT protein builds up in liver cells and doesn't reach the lungs to protect them. Augmentation therapy involves regular infusions ...
Pangolin trade study highlights the need for urgent reforms to CITES
2015-05-28
New research by conservationists at the University of Kent suggests that in order to manage trade-threatened species more effectively the Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) needs to act more upon the economic reality of wildlife trade.
In a paper published in Biological Conservation Dan Challender and colleagues, Professor Douglas MacMillan from Kent and Professor Stuart Harrop from the University of Sussex, critically and constructively evaluated the CITES approach to controlling trade through means of a case study ...
First Eastern Pacific tropical depression runs ahead of dawn
2015-05-28
The first tropical depression of the Eastern Pacific hurricane season formed during the early morning of Thursday, May 28, 2015, well southwest of Mexico. An image of the storm taken from NOAA's GOES-West satellite shows the depression in infrared light as it was born in the early morning hours before sunrise. To the east of the depression, the GOES image shows the sunlight of dawn reaching Mexico's Yucatan Peninsula.
At 0900 UTC (5 a.m. EDT) the center of Tropical Depression One-E was located near latitude 11.0 North, longitude 110.4 West, ABOUT 685 miles (1,105 km) ...
Reading the Earth's LIPS
2015-05-28
Lip reading normally involves deciphering speech patterns, movements, gestures and expressions just by watching a person speak. Planet Earth has LIPS, too - they are an acronym for Large Igneous Provinces, huge accumulations of igneous rocks that form when hot magma extrudes from inside the Earth and flows onto the surface of the seafloor under several kilometres of water.
An international team of scientists including University of Sydney geophysicists Professor Dietmar Müller, Dr Simon Williams and Dr Maria Seton from the School of Geosciences have found a novel ...
Roadside air can be more charged than under a high-voltage power line
2015-05-28
Despite community concerns about living under high-voltage power lines, a world-first QUT study reveals that there are far more charged particles beside busy roads.
The study, published in the international journal Science of the Total Environment was conducted by Dr Rohan Jayaratne, Dr Xuan Ling and Professor Lidia Morawska from QUT's International Laboratory for Air Quality and Health who found that within 10 metres of a freeway, charged particles were up to 15 times more concentrated than beneath high-voltage power lines.
"Although the effects of ions and charged ...
Career tracking of doctorate holders
2015-05-28
ESF has just published a report on a pilot study of the career paths of post-doctorates and doctorate alumni from five research funding and research performing organisations: AXA Research Fund (AXA RF), France, Fonds National de la Recherche (FNR), Luxembourg, Goethe Graduate Academy at the Goethe University Frankfurt (GRADE), Paul Scherrer Institute (PSI), Switzerland and TDR, the Special Programme for Research and Training in Tropical Diseases, a co-sponsored programme of UNICEF, UNDP, the World Bank and WHO.
The study comprised focus groups and a survey of 880 doctorate ...
Aftershock assessment
2015-05-28
Earthquakes kill, but their aftershocks can cause the rapid collapse of buildings left standing in the aftermath of the initial quake. Research published in the International Journal of Reliability and Safety offers a new approach to predicting which buildings might be most susceptible to potentially devastating collapse due to the ground-shaking aftershock tremors.
Negar Nazari and John W. van de Lindt of the Department of Civil and Environmental Engineering, at Colorado State University in Fort Collins and Yue Li of Michigan Technological University, in Houghton, USA, ...
Merging galaxies break radio silence
2015-05-28
In the most extensive survey of its kind ever conducted, a team of scientists have found an unambiguous link between the presence of supermassive black holes that power high-speed, radio-signal-emitting jets and the merger history of their host galaxies. Almost all of the galaxies hosting these jets were found to be merging with another galaxy, or to have done so recently. The results lend significant weight to the case for jets being the result of merging black holes and will be presented in the Astrophysical Journal.
A team of astronomers using the NASA/ESA Hubble Space ...
Rubbers, roughness and reproduction
2015-05-28
Researchers from the University of Leicester have discovered that when it comes to rubbers, textured surfaces, and reproduction, more fluid formulations have greater reliability than those that are thick and sticky.
Rubber compounds are widely used to mould and produce copies of textured surfaces for scientific analysis, but so far little research has been done to establish which rubbers make the most reliable copies.
A new study published in the academic journal Scientific Reports, led by Professor Mark Purnell from the University of Leicester's Department of Geology, ...
Ombitasvir/paritaprevir/r in hepatitis C: Indication of added benefit in certain patients
2015-05-28
The fixed-dose drug combination ombitasvir/paritaprevir/ritonavir (trade name Viekirax) has been available since January 2015 for the treatment of adults with chronic hepatitis C infection. The German Institute for Quality and Efficiency in Health Care (IQWiG) examined in a dossier assessment whether this drug combination offers an added benefit over the appropriate comparator therapy.
According to the findings, there are indications of an added benefit in patients who have not yet developed cirrhosis of the liver and who are infected with the hepatitis C virus (HCV) ...
The Arctic: Interglacial period with a break
2015-05-28
This news release is available in German. FRANKFURT. Scientists at the Goethe University Frankfurt and at the Senckenberg Biodiversity and Climate Research Centre working together with their Canadian counterparts, have reconstructed the climatic development of the Arctic Ocean during the Cretaceous period, 145 to 66 million years ago. The research team comes to the conclusion that there was a severe cold snap during the geological age known for its extreme greenhouse climate. The study published in the professional journal Geology is also intended to help improve prognoses ...
A sight for sore eyes: Visually training medical students to better identify melanomas
2015-05-28
(Edmonton) Each year, thousands of Canadians are given the news: they have skin cancer. It is the most common form of cancer in Canada and around the world, but if detected early, survival rates are extremely high. According to Liam Rourke, it doesn't happen nearly as often as it could.
"The difficulty is that people have a really hard time detecting skin cancer melanomas early," says Rourke, an associate professor in the Faculty of Medicine & Dentistry's Department of Medicine at the University of Alberta. "One of the reasons is that it's an exceptionally difficult task ...
Stanford researchers tie unexpected brain structures to creativity -- and to stifling it
2015-05-28
Investigators at Stanford University have found a surprising link between creative problem-solving and heightened activity in the cerebellum, a structure located in the back of the brain and more typically thought of as the body's movement-coordination center.
In designing the study, the researchers drew inspiration from the game Pictionary.
The cerebellum, traditionally viewed as the brain's practice-makes-perfect, movement-control center, hasn't been previously recognized as critical to creativity. The new study, a collaboration between the School of Medicine and ...
Stanford breakthrough heralds super-efficient light-based computers
2015-05-28
Stanford electrical engineer Jelena Vuckovic wants to make computers faster and more efficient by reinventing how they send data back and forth between chips, where the work is done.
In computers today, data is pushed through wires as a stream of electrons. That takes a lot of power, which helps explain why laptops get so warm.
"Several years ago, my colleague David Miller carefully analyzed power consumption in computers, and the results were striking," said Vuckovic, referring to electrical engineering Professor David Miller. "Up to 80 percent of the microprocessor ...
Endless oscillations
2015-05-28
A quantum system never relaxes. An isolated system (like a cloud of cold atoms trapped in optical grids) will endlessly oscillate between its different configurations without ever finding peace. In practice, these types of systems are unable to dissipate energy in any form. This is the exact opposite of what happens in classical physics, where the tendency to reach a state of equilibrium is such a fundamental drive that is has been made a fundamental law of physics, i.e., the second law of thermodynamics, which introduces the concept of entropy.
This profound difference ...
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