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42 articles from PhysOrg

New approach to soft material flow may yield way to new materials, disaster prediction

How does toothpaste stay in its tube and not ooze out when we remove the cap? What causes seemingly solid ground to suddenly break free into a landslide? Defining exactly how soft materials flow and seize has eluded researchers for years, but a new study explains this complex motion using relatively simple experiments. The ability to define—and eventually predict—soft material flow will...

NASA tracking Tropical Storm Laura near Cuba

As Tropical Storm Laura continues to move through the Caribbean Sea NASA satellites are providing forecasters with visible, infrared and microwave data. Laura continued to move through the Caribbean Sea on a march toward the Gulf of Mexico.

Velcro method for more precise binding of drug particles

In order to deliver drug particles to the right place in the body—a field known as nanomedicine—selectivity plays an important role. After all, the drug only has to attach itself to the cells that need it. A theory from 2011 predicts that selectivity is not only based on the type of receptor, but also on the number and strength of the receptors on the cell. Researchers at Eindhoven University...

Advanced biofuels show real promise for replacing some fossil fuels

Biofuel and bioenergy systems are integral to scenarios for displacing fossil fuel use and producing negative emissions through carbon capture and storage. But the net greenhouse gas mitigation benefit of these systems has been controversial, due to concerns around carbon losses from changes in land use and foregone sequestration benefits from alternative land uses.

Climate change and land use are accelerating soil erosion by water

Soil loss due to water runoff could increase greatly around the world over the next 50 years due to climate change and intensive land cultivation. This was the conclusion of an international team of researchers led by the University of Basel, which published the results from its model calculation in the scientific journal PNAS.

Each human gut has a viral 'fingerprint'

Each person's gut virus composition is as unique as a fingerprint, according to the first study to assemble a comprehensive database of viral populations in the human digestive system.

How dinosaur research can help medicine

The intervertebral discs connect the vertebrae and give the spine its mobility. The disc consists of a cartilaginous fibrous ring and a gelatinous core as a buffer. It has always been assumed that only humans and other mammals have discs. A misconception, as a research team under the leadership of the University of Bonn has now discovered: Even Tyrannosaurus rex could have suffered a slipped disc....

New species of Cretaceous brittle star named in honour of Nightwish vocalist

Paleontologists from the Natural History Museums in Luxembourg and Maastricht have discovered a previously unknown species of brittle star that lived in the shallow, warm sea which covered parts of the present-day Netherlands at the end of the dinosaur era. The starfish-like creature was unearthed more than 20 years ago but has only now been identified as new to science. The name of the new fossil...

Researchers create a contagion model to predict flooding in urban areas

Inspired by the same modeling and mathematical laws used to predict the spread of pandemics, researchers at Texas A&M University have created a model to accurately forecast the spread and recession process of floodwaters in urban road networks. With this new approach, researchers have created a simple and powerful mathematical approach to a complex problem.

Fuel cells for hydrogen vehicles are becoming longer lasting

Roughly 1 billion cars and trucks zoom about the world's roadways. Only a few run on hydrogen. This could change after a breakthrough achieved by researchers at the University of Copenhagen. The breakthrough? A new catalyst that can be used to produce cheaper and far more sustainable hydrogen powered vehicles.

Are antivitamins the new antibiotics?

Antibiotics are among the most important discoveries of modern medicine and have saved millions of lives since the discovery of penicillin almost 100 years ago. Many diseases caused by bacterial infections—such as pneumonia, meningitis or septicemia—are successfully treated with antibiotics. However, bacteria can develop resistance to antibiotics which then leaves doctors struggling to find...

Large molecules need more help to travel through a nuclear pore into the cell nucleus

A new study in the field of biophysics has revealed how large molecules are able to enter the nucleus of a cell. A team led by Professor Edward Lemke of Johannes Gutenberg University Mainz (JGU) has thus provided important insights into how some viruses, for example, can penetrate into the nucleus of a cell, where they can continue to proliferate and infect others. They have also demonstrated that...

Routing valley exciton emission of a monolayer via in-plane inversion-symmetry broken PhC slabs

The valleys of two-dimensional transition metal dichalcogenides (TMDCs) offer a new degree of freedom for information processing and have attracted tremendous interest for their possible applications in valleytronics. To develop valleytronics devices based on TMDCs, effective approaches to separate valleys in the near or far field are indispensable. In recent research, kinds of nanostructures are...