feed info

44 articles from ScienceDaily

Using science to solve a 1,300-year-old art mystery

The Cincinnati Art Museum turned to a scientist at the University of Cincinnati for help solving a mystery 1,300 years in the making. Together they examined whether decorative features on a Tang dynasty dancing horse were original to the sculpture or added at some later date.

Researchers devise tunable conducting edge

Physicists have demonstrated a new magnetized state in a monolayer of tungsten ditelluride. This material of one-atom thickness has an insulating interior but a conducting edge, which has important implications for controlling electron flow in nanodevices.

Cancers in adults under 50 on the rise globally

A study reveals that the incidence of early onset cancers (those diagnosed before age 50), including cancers of the breast, colon, esophagus, kidney, liver, and pancreas among others, has dramatically increased around the world, with this drastic rise beginning around 1990. In an effort to understand why many more younger individuals are being diagnosed with cancer, scientists conducted extensive...

Walking and slithering aren't as different as you think

Abrahamic texts treat slithering as a special indignity visited on the wicked serpent, but evolution may draw a more continuous line through the motion of swimming microbes, wriggling worms, skittering spiders and walking horses. A new study found that all of these kinds of motion are well represented by a single mathematical model.

How tardigrades bear dehydration

Some species of tardigrades, or water bears as the tiny aquatic creatures are also known, can survive in different environments often hostile or even fatal to most forms of life. For the first time, researchers describe a new mechanism that explains how some tardigrades can endure extreme dehydration without dying. They explored proteins that form a gel during cellular dehydration. This gel...

Conflict of interest resolved: Wax on the body surface of ants can simultaneously optimize two essential requirements

The survival of an ant colony depends on its members being able to distinguish their own nestmates from ants of a foreign -- and possibly hostile -- colony. This so-called nestmate recognition is based on scents emitted by a very thin layer of wax that coat the body of every ant. At the same time, this wax layer protects the ant body against water loss. Scientists have now found that these two...

High cholesterol, overweight and reduced physical stamina are long COVID sequelae in young adults

Healthy young people with just a mild COVID infection can sometimes suffer temporary post-infection consequences such as tiredness, loss of smell and taste or reduced fertility. These symptoms usually improve with time. But a new conducted with Swiss Armed Forces personnel shows that young people post Covid are likely to have increased cholesterol, a high BMI, and a reduced level of physical...

Lessons learned from COVID-19 mitigation measures

Due to the uncertainty of the timing of vaccine approval at the beginning of the COVID-19 pandemic, policymakers struggled to find the best mitigation measures. In a new study, researchers analyzed how the expectation of a vaccine influences optimal lockdown measures.

Organic thin-film sensors for light-source analysis and anti-counterfeiting applications

A team of physicists and chemists presents an organic thin-film sensor that describes a completely new way of identifying the wavelength of light and achieves a spectral resolution below one nanometer. As integrated components, the thin-film sensors could eliminate the need for external spectrometers in the future. A patent application has already been filed for the novel technology.

Coupling of electron-hole pairs

Physicists have succeeded in coupling different types of electron-hole pairs (excitons) in the van der Waals material molybdenum disulfide. This successful coupling allows them to utilize and control the different properties of the two types of electron-hole pairs -- and could pave the way for the production of a novel source of individual particles of light (photons).

Physicists discover a new rule for orbital formation in chemical reactions

Electron orbitals show where and how electrons move around atomic nuclei and molecules. In modern chemistry and physics, they have proven to be a useful model for quantum mechanical description and prediction of chemical reactions. Only if the orbitals match in space and energy can they be combined -- this is what happens when two substances react with each other chemically. In addition, there is...

Discovery of new types of microfossils may answer an age-old scientific question

The Gunflint Formation, which straddles Lake Superior's northwestern shore, contains a treasure trove of geological clues about the evolution of life. After a recent geological reassessment of this area, a research team has unearthed new types of microfossils dating 1.9 billion years. The landmark discovery will help scientists pinpoint the timing and factors that ushered in the evolution of...