Children who undergo simple emergency surgeries, such as hernia repairs or appendix removals, on weekends are more likely to suffer complications and even die than children getting the same kind of treatment during the week, according to results of a Johns Hopkins Children's Center study. The Johns Hopkins team says that although the number of deaths was small, the marked difference in death and risk of other complications points to a worrisome "weekend effect" observed across hospitals nationwide that calls for an in-depth examination of possible after-hours safety lapses ...

WASHINGTON — Of adolescents visiting the emergency department for any reason, one in five girls and one in eight boys reported dating violence in the past year. According to a study published online Monday in Annals of Emergency Medicine, dating violence among adolescents was also strongly associated with alcohol, illicit drug use and depression ("Dating Violence Among Male and Female Youth Seeking Emergency Department Care") http://tinyurl.com/oakk4aq. "An enormous number of youth and adolescents have already experienced violence in their dating lives," said lead ...

This image was taken as part of the ESO Cosmic Gems programme [1] using the Wide Field Imager on the MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile. It shows Gum 15, located in the constellation of Vela (The Sails), some 3000 light-years from Earth [2]. This glowing cloud is a striking example of an HII region [3]. Such clouds form some of the most spectacular astronomical objects we can see; for example the Eagle Nebula (which includes the feature nicknamed "The Pillars of Creation"), the great Orion Nebula , and this less famous example, Gum 15. Hydrogen ...

Irvine, Calif. — Fully automated "deep learning" by computers greatly improves the odds of discovering particles such as the Higgs boson, beating even veteran physicists' abilities, according to findings by UC Irvine researchers published today in the journal Nature Communications. "We are thrilled with the publication of our work," said co-author Pierre Baldi, Chancellor's Professor of computer science, "and even more so with the hope that deep learning may help solve fundamental open questions about the nature of matter, gravity and the origin of the universe." Baldi, ...

Theorists propose a way to make superconducting quantum devices such as Josephson junctions and qubits, atom-by-atom, inside a silicon crystal. Such systems could combine the most promising aspects of silicon spin qubits with the flexibility of superconducting circuits. The researcher's results have now been published in Nature Communications (1). High quality silicon is one of the historical foundations of modern computing. But it is also promising for quantum information technology. In particular, electron and nuclear spins in pure silicon crystals have been measured ...

Gland, Switzerland – With only about one-sixth of the original coral cover left, most Caribbean coral reefs may disappear in the next 20 years, primarily due to the loss of grazers in the region, according to the latest report by the Global Coral Reef Monitoring Network (GCRMN), the International Union for Conservation of Nature (IUCN) and the United Nations Environment Programme (UNEP). The report, Status and Trends of Caribbean Coral Reefs: 1970-2012, is the most detailed and comprehensive study of its kind published to date – the result of the work of 90 experts over ...

Systems that automatically read automobile license plates have the potential to save police investigative time and increase safety, but law enforcement officials must address issues related to staffing, compatibility and privacy before the technology can reach its full potential, according to a new RAND Corporation report. As part of efforts to promote innovation in law enforcement, many of the first generation license plate reader systems were purchased with federal and state grants. As these funding streams can be inconsistent, law enforcement agencies are – or will ...

DURHAM, N.C. -- If unwed parents are going to get married, the best window of opportunity for that union seems to be before their child turns 3, says a new study from Duke University. But patterns vary greatly by race, with more African-American mothers marrying much later than mothers of other races or ethnicities. Federal policies have often presumed that unmarried parents will be most receptive to marriage right after a baby's birth, a period that has been dubbed the "magic moment." The new study is the first to test that assumption, said author Christina Gibson-Davis. ...

How do ants manage to move so nimbly whilst coordinating three pairs of legs and a behind that weighs up to 60% of their body mass? German scientists have recently developed a device that may reveal the answer. Measuring the forces generated by single limbs is vital to understanding the energetics of animal locomotion. However, with very small animals such as insects, this becomes problematic. Dr Reinhardt (Friedrich-Schiller University) used an elastic polycarbonate material to produce a miniature force plate. Springs arranged at right angles to each other enabled forces ...

If you are a locust, the most nutritious plant to eat depends on the ambient temperature. Scientists at the University of Sydney, Australia, have discovered that locusts choose their food and then where they digest it according to how hot it is. Dr Fiona Clissold, who led the study, explains why temperature has such a large influence on insect diets. "Whilst an insect's metabolic rate increases exponentially with temperature, the rate at which locusts absorb protein and carbohydrate from different plants does not increase in step with temperature. As a result, nutrient ...

It is popularly believed that fish have a memory span of only 30 seconds. Canadian scientists, however, have demonstrated that this is far from true – in fact, fish can remember context and associations up to twelve days later. The researchers studied African Cichlids (Labidochromis caeruleus), a popular aquarium species. These fish demonstrate many complex behaviours, including aggression, causing the scientists to predict that they could be capable of advanced memory tasks. Each fish was trained to enter a particular zone of the aquarium to receive a food reward, with ...

New research has found that a sheep's experiences soon after birth can shape its later behaviour and also that of its offspring. The study led by academics from the University of Bristol's School of Veterinary Sciences and published in the Royal Society journal Biology Letters investigated whether early-life experiences can alter behavioural responses to a naturally painful event in adulthood – giving birth – and also affect behaviour of the next generation. The period following birth can be a challenging time for young lambs. They are usually tail-docked without analgesia ...

One in three severely affected adults with ME in England have no access to local specialist services, new research has shown. Published in the British Medical Journal Open, the research by the University of Southampton reveals NICE guidelines, which say severely affected patients with ME, otherwise known as chronic fatigue syndrome (CFS), should have access to specialist care, are not being met by many NHS Trusts across England. Over a third of specialist adult ME/CFS services in the NHS provide no service to severely affected patients, and a further 12 per cent of ...

VIDEO: The movie clip shows the bitumen flow from the top camera view, and corresponds to approximately 24 days of real time. Click here for more information. Physicists at Queen Mary University of London have set up a new pitch drop experiment for students to explore the difference between solid and liquids. Known as the 'world's longest experiment', the set up at the University of Queensland was famous for taking ten years for a drop of pitch – a thick, black, sticky ...

VIDEO: This video is an analysis of video of kangaroos walking has helped scientists discover how important their tails are during locomotion. Click here for more information. Kangaroos may be nature's best hoppers. But when they are grazing on all fours, which is most of the time, their tail becomes a powerful fifth leg, says a new study. Involving researchers at the University of Colorado Boulder, Simon Fraser University in Burnaby, Canada, and the University of New ...

A new report on unintentional injury and violence in the United States, published in The Lancet as part of a new Series, The health of Americans [1], has found that prevention strategies across society show a great deal of promise in preventing unintended deaths and injuries. According to the report, by CDC researchers from Atlanta, USA, more Americans between the ages of one and 30 die from injury than from any other cause. Every year, nearly 180 000 people in the USA die from preventable causes such as automobile crashes, drowning, firearm-related injuries, falls, ...

Infectious diseases remain major public health challenges in the United States, according to a new report published in The Lancet as part of a new Series, The health of Americans [1]. Endemic conditions such as chronic viral hepatitis, human immunodeficiency virus, and other sexually transmitted infections continue to affect millions of individuals, with racial and ethnic minorities disproportionately affected. Emerging and re-emerging vector borne and zoonotic disease infections are threatening new areas and populations, as most recently observed with Chikungunya. Despite ...

According to a report on chronic diseases by Centers for Disease Control and Prevention researchers, published in The Lancet as part of a new Series, The health of Americans [1], half of all adults in the USA suffer from at least one chronic condition, such as diabetes, heart disease, or obesity, and over a quarter of adults have two or more. The majority of these chronic conditions stem from a small number of risk factors that are largely preventable, including tobacco use, poor diet, and physical inactivity (both strongly associated with obesity), alcohol consumption, ...

Millions of people throughout the world are infected with hepatitis C virus (HCV), which can lead to cirrhosis of the liver and cancer. Directly acting antiviral agents inhibit viral proteins and have been used to successfully treat HCV. Unfortunately, antiviral therapy fails in some patients, resulting in a relapse of HCV. A study published in the Journal of Clinical Investigation identifies a marker that can identify patients likely to have an HCV relapse after antiviral therapy. Shyamasundaran Kottilil and colleagues at the NIH evaluated the immune response of HCV-infected ...

Use of a lower intensity bone marrow transplantation method showed promising results among 30 patients (16-65 years of age) with severe sickle cell disease, according to a study in the July 2 issue of JAMA. Myeloablative (use of high-dose chemotherapy or radiation) allogeneic hematopoietic stem cell transplantation (HSCT; receipt of hematopoietic stem cells "bone marrow" from another individual) is curative for children with severe sickle cell disease, but associated toxicity has made the procedure prohibitive for adults. The development of nonmyeloablative conditioning ...

Despite strong preclinical data, the drug everolimus failed to improve overall survival in patients with advanced liver cancer, compared to placebo, according to a study in the July 2 issue of JAMA. Patients with advanced hepatocellular carcinoma (HCC; a type of liver cancer) have a median overall survival of less than l year, largely because of the absence of effective therapies. The drug sorafenib is the only systemic therapy shown to significantly improve overall survival in advanced HCC; however its benefits are mostly transient and modest, and disease eventually ...

In patients with a traumatic brain injury (TBI), neither the administration of the hormone erythropoietin (EPO) or maintaining a higher hemoglobin concentration through blood transfusion resulted in improved neurological outcome at 6 months, according to a study in the July 2 issue of JAMA. Transfusing at higher hemoglobin concentrations was associated with a higher risk of adverse events. Patients with severe traumatic brain injury commonly develop anemia. For patients with neurological injury, anemia is a potential cause of secondary injury, which may worsen neurological ...

Use of exome sequencing improved the ability to identify the underlying gene mutations in patients with biochemically defined defects affecting multiple mitochondrial respiratory chain complexes (enzymes that are involved in basic energy production), according to a study in the July 2 issue of JAMA. Defects of the mitochondrial respiratory chain have emerged as the most common cause of childhood and adult neurometabolic disease, with an estimated prevalence of l in 5,000 live births. Clinically these disorders can present at any time of life, are often seen in association ...

Breast cancer screening costs for Medicare patients skyrocketed between 2001 and 2009, but the increase did not lead to earlier detection of new breast cancer cases, according to a study published by Yale School of Medicine researchers in the July 1 Journal of the National Cancer Institute. While the number of screening mammograms performed among Medicare patients remained stable during the same time period, the study focused on the adoption of newer imaging technologies in the Medicare population, such as digital mammography. Brigid Killelea, M.D., assistant professor ...

Adults stop anti-rejection drugs after stem-cell transplant reverses sickle cell disease NIH trial success suggests a new treatment option for older, sicker patients Half of patients in a trial have safely stopped immunosuppressant medication following a modified blood stem-cell transplant for severe sickle cell disease, according to a study in the July 1 issue of the Journal of the American Medical Association. The trial was conducted at the National Institutes of Health's Clinical Center in Bethesda, Maryland, by researchers from NIH's National Institute of Diabetes ...