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Science News for July 28, 2015


Research with bite

A new study reveals that the distinctive, saw-like tooth structure of theropod dinosaurs enabled them to effectively process food, contributing to their success as predators. The discovery sheds light on the evolution of dinosaur dentition and has implications for our understanding of these ancient creatures.

SourceUniversity of Toronto·JournalScientific Reports·DateJul 28, 2015

New treatment may help neonatal liver disease associated with parenteral nutrition

A new study suggests that exogenous glucagon-like peptide 2 (GLP-2) treatment can improve the excretion of toxic bile acids and stimulate liver growth in neonatal pigs with parenteral nutrition-associated liver disease. This finding supports a beneficial role for GLP-2 as a novel therapy in PNALD.

SourceAmerican Society for Parenteral and Enteral Nutrition (A.S.P.E.N.)·JournalJournal of Parenteral and Enteral Nutrition·DateJul 28, 2015

Early evidence suggests hybrid cochlear implants may benefit millions with common form of hearing loss

A multicenter study found that hybrid cochlear implant devices led to significant improvements in hearing and speech recognition among individuals with severely damaged high-frequency hearing. The study showed that 45 participants experienced overall improvement in their hearing and speech recognition, with some achieving profound gains.

Identifying ever-growing disturbances leading to freak waves

Researchers have made significant progress in identifying growing localised patterns as early indicators of freak waves. By resolving the nonlinear Schrödinger equation, they can extract pertinent information from localised disturbances' characteristics, shedding light on complex dynamics.

SourceSpringer·JournalThe European Physical Journal D·DateJul 28, 2015

Autism costs estimated to reach nearly $500 billion, potentially $1 trillion, by 2025

UC Davis researchers estimate that the total costs of caring for people with autism spectrum disorder will range from $162 to $367 billion in 2015 and potentially reach $1 trillion by 2025. The study recommends increased investment in research and early intervention programs to reduce these costs.

SourceUniversity of California - Davis Health·JournalJournal of Autism and Developmental Disorders·DateJul 28, 2015

A new litmus test for chaos?

Researchers from the University of Maryland have described a new definition of chaos that can be applied to a wide range of chaotic systems. Expansion entropy, a flexible type of entropy, is used to identify chaotic behavior in models that are forced by external inputs. This new definition has the potential to help advance computer mod...

Major European mouse study reveals the role of genes in disease

A major European mouse study has identified the roles of 320 genes in mice, shedding light on their functions and potential links to human diseases. The study, led by Helmholtz Munich, provides valuable insights into genetic variations that can be used to develop personalized medicine approaches.

'Carbon sink' detected underneath world's deserts

A new study suggests that the world's deserts may be storing significant amounts of climate-changing carbon dioxide, with estimates suggesting up to 20 billion metric tons stored in underground aquifers. This discovery could improve models used to predict future climate change and enhance calculations of the Earth's carbon budget.

SourceAmerican Geophysical Union·JournalGeophysical Research Letters·DateJul 28, 2015

Plant light sensors came from ancient algae

A new study from Duke University found that plant light-sensing molecules were inherited from ancient algae, contradicting the prevailing idea of bacterial origins. The researchers analyzed 300 DNA and RNA sequences from phytochrome proteins in a wide range of algae and land plants.

SourceDuke University·JournalNature Communications·DateJul 28, 2015

Link between mood, pain in rheumatoid arthritis patients

Researchers link positive and negative mood to daily pain in rheumatoid arthritis patients, suggesting that interventions targeting depression and momentary mood may improve pain and quality of life. The study's findings may have implications for individuals with chronic pain beyond rheumatoid arthritis.

SourcePenn State·JournalAnnals of Behavioral Medicine·DateJul 28, 2015

Doctor warns about lead poisoning risk from recycling older electronic equipment

A pediatrician at Cincinnati Children's Hospital Medical Center warns that recycling older electronic equipment poses a lead poisoning risk to children. Elevated blood lead levels have been detected in two cases, highlighting the importance of preventing take-home exposure to hazardous chemicals and substances.

SourceCincinnati Children's Hospital Medical Center·JournalMMWR Morbidity and Mortality Weekly Report·DateJul 28, 2015

BMJ partners with European Society for Medical Oncology

BMJ has partnered with the European Society for Medical Oncology (ESMO) to publish a new open access cancer journal called ESMO Open. The journal will cover various aspects of cancer treatment and include study protocols and phase I clinical trials. It aims to provide rapid access to high-quality research on cancer care worldwide.

SourceBMJ Group·JournalThe BMJ·DateJul 28, 2015

Origins of life: New model may explain emergence of self-replication on early Earth

A new model suggests that template-assisted ligation could have enabled the leap from monomers to self-replicating polymer chains in primordial soup. The model proposes a cycle between 'day' and 'night' phases, driven by environmental changes, where polymers join together to form longer chains via template-assisted ligation.

SourceAmerican Institute of Physics·JournalThe Journal of Chemical Physics·DateJul 28, 2015

Experimental MERS vaccine shows promise in animal studies

A two-step regimen of experimental vaccines against Middle East respiratory syndrome (MERS) prompted immune responses in mice and rhesus macaques, producing broadly neutralizing antibodies against multiple strains of the MERS coronavirus. Vaccinated macaques were protected from severe lung damage when later exposed to MERS-CoV.

More secondary schools serve healthier lunches

Significant improvements were made in National School Lunch Program nutrition for middle and high school students after the US Department of Agriculture updated its nutrition standards in 2012-13. At least 80% of secondary students attended schools that offered nonfat milk and fruits and vegetables daily by 2013.

Ewing's sarcoma: A dangerous liaison

Researchers from Ludwig-Maximilians-Universität München elucidated the molecular level interactions between an inherited mutation and a spontaneous somatic mutation in Ewing's sarcoma. The team discovered that a germline susceptibility variant increases risk for the disease by interacting with a driver mutation, promoting tumorigenesis.

SourceLudwig-Maximilians-Universität München·JournalNature Genetics·DateJul 28, 2015

Geography, skills, local companies affect higher education impact on economic development

A new study suggests that higher education's impact on economic development is influenced by geography, available skills, and knowledge, as well as networks of local companies. The research highlights the importance of considering these contextual factors in policy-making to maximize the positive effects of investment in education.

SourceElsevier·JournalInternational Journal of Educational Development·DateJul 28, 2015

Stress hormone reduces heroin cravings

Researchers found that cortisol administration significantly reduced cravings for heroin in addicts, with a 25% decrease seen on average. The study suggests that cortisol may have inhibitory effects on addiction-related memory and behaviors.

SourceUniversity of Basel·JournalTranslational Psychiatry·DateJul 28, 2015

New chemistry makes strong bonds weak

Researchers at Princeton University have developed a new chemical reaction that breaks the strongest bond in a molecule instead of the weakest. Using a two-component catalyst system, they selectively activate the strongest bond through proton-coupled electron transfer (PCET), allowing access to previously inaccessible compounds.

SourcePrinceton University·JournalJournal of the American Chemical Society·DateJul 28, 2015

Effects over time of tobacco tax increases in New Zealand

Annual tobacco tax increases in New Zealand are projected to lead to significant health gains and cost savings, particularly among indigenous populations. The study found that Māori populations would experience a 3.7 fold increase in quality-adjusted life-years (QALYs) compared to non-Māori populations.

SourcePLOS·JournalPLOS Medicine·DateJul 28, 2015

Switching off street lights at night does not increase car crashes and crime

A new study published in the Journal of Epidemiology and Community Health found that reducing street lighting at night does not lead to an increase in road traffic collisions or crime. Local authorities can safely reduce energy costs and carbon emissions by carefully assessing risks, according to the researchers.

SourceLondon School of Hygiene & Tropical Medicine·JournalJournal of Epidemiology and Community Health·DateJul 28, 2015

Omega-3 fatty acids may help improve treatment and quality of life in cancer patients

A new study found evidence of activity in response and disease stabilization rates, reduction in liver metastasis volume, and improved quality of life scores in patients with advanced pancreatic cancer treated with omega-3 fatty acids. The results suggest potential benefits of combining omega-3 fatty acids with chemotherapy agents.

SourceAmerican Society for Parenteral and Enteral Nutrition (A.S.P.E.N.)·JournalJournal of Parenteral and Enteral Nutrition·DateJul 28, 2015

Controlling phase changes in solids

Researchers have successfully controlled phase changes in GST material using laser light, achieving rapid and reversible changes in electro-optical properties. The results suggest GST may be a good substitute for silicon materials, with potential implications for flexible displays, logic circuits, and universal memory.

SourceICFO-The Institute of Photonic Sciences·JournalNature Materials·DateJul 28, 2015