feed info

39 articles from PhysOrg

What do criminal justice risk assessments actually assess?

Exposure to the criminal justice system increases some of the risk factors used to predict recidivism and re-arrest, according to new research out of Columbia University Mailman School of Public Health. For every arrest or conviction an adolescent experienced, their levels of antisocial attitudes, behaviors, and number of peers became subsequently higher. Findings provide new empirical evidence...

Cracking a decades-old test, researchers bolster case for quantum mechanics

In a new study, researchers demonstrate creative tactics to get rid of loopholes that have long confounded tests of quantum mechanics. With their innovative method, the researchers were able to demonstrate quantum interactions between two particles spaced more than 180 meters (590 feet) apart while eliminating the possibility that shared events during the past 11 years affected their interaction.

What's killing sea otters? Scientists pinpoint parasite strain

Many wild southern sea otters in California are infected with the parasite Toxoplasma gondii, yet the infection is fatal for only a fraction of sea otters, which has long puzzled the scientific community. A study from the University of California, Davis, identifies the parasite's specific strains that are killing southern sea otters, tracing them back to a bobcat and feral domestic cats from...

NASA's aqua satellite finds a weaker Chantal, now a depression

Over the last day, winds outside of Tropical Storm Chantal have been weakening the storm in the North Atlantic Ocean. When NASA's Aqua satellite passed over the storm from its orbit in space on August 22, the storm had weakened to a depression and strongest storms were still confined to the northeast of the center.

Biomaterials smarten up with CRISPR

The CRISPR-Cas system has become the go-to tool for researchers who study genes in an ever-growing list of organisms, and is being used to develop new gene therapies that potentially can correct a defect at a single nucleotide position of the vast reaches of the genome. It is also being harnessed in ongoing diagnostic approaches for the detection of pathogens and disease-causing mutations in...

New tool mines scientific texts for fusion protein facts

A new computational tool called ProtFus screens scientific literature to validate predictions about the activity of fusion proteins—proteins encoded by the joining of two genes that previously encoded two separate proteins. Somnath Tagore in the Frenkel-Morgenstern Lab at Bar-Ilan University, Israel, and colleagues present ProtFus in PLOS Computational Biology.

Structure of protein nanoturbine revealed

Cells rely on protein complexes known as ATP synthases or ATPases for their energy needs. Adenosine triphosphate (ATP) molecules power most of the processes sustaining life. Structural biologist Professor Leonid Sazanov and his research group from the Institute of Science and Technology Austria (IST Austria) in Klosterneuburg, Austria have now determined the first atomic structure of the...

Map of malaria behavior set to revolutionize research

The first detailed map of individual malaria parasite behaviour across each stage of its complicated life cycle has been created by scientists. Researchers at the Wellcome Sanger Institute and their collaborators used advanced single-cell technology to isolate individual parasites and measure their gene activity. The result is the Malaria Cell Atlas, which gives the highest resolution view of...

Experiments illuminate key component of plants' immune systems

Plants, like humans and animals, have over millions of years evolved complex immune systems that fend off invading pathogens. But unlike many animals, plants lack adaptive immunity conferred by antibodies. This means each plant cell must defend itself against all potential pathogens—a daunting task.

Tracing the evolution of vision in fruit flies

The function of the visual photopigment rhodopsin and its action in the retina to facilitate vision is well understood. However, there remain questions about other biological functions of this family of proteins (opsins) and this has ramifications for our understanding of several evolutionary pathways. Now, an international research team led by the University of Göttingen has shown there are...