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55 articles from PhysOrg

Researchers decode thermal conductivity with light

Groundbreaking science is often the result of true collaboration, with researchers in a variety of fields, viewpoints and experiences coming together in a unique way. One such effort by Clemson University researchers has led to a discovery that could change the way the science of thermoelectrics moves forward.

In a warming world, Cape Town's 'Day Zero' drought won't be an anomaly

Today, the lakes around Cape Town are brimming with water, but it was only a few years ago that South Africa's second-most populous city made global headlines as a multi-year drought depleted its reservoirs, impacting millions of people. That kind of extreme event may become the norm, researchers now warn.

New study defines life cycle of a destructive plant pathogen 142 years after its discovery

Found in more than 60 countries, cruciferous clubroot disease is one of the most destructive plant diseases, causing so-called tumors on the roots of Brassicaceae crops and resulting in huge yield losses annually. The causal agent of this disease, Plasmodiophora brassicae, was first discovered by Russian biologist M. S. Woronin in 1878. Despite this early discovery, the life history of the...

Japanese increasingly single, disinterested in dating: study

In Japan, the proportion of the population who are single has increased dramatically in the past three decades. In 2015, one in four women and one in three men in their 30s were single, and half of the singles say they are not interested in heterosexual relationships. Public health experts at the University of Tokyo found that those who are disinterested in relationships are more likely to have...

Antiferromagnets are suitable for dissipationless nanoelectronics, contrary to current theories

Sometimes combinations of different things produce effects that no one expects, such as when completely new properties appear that the two combined parts do not have on their own. Dr. Libor Šmejkal from Johannes Gutenberg University Mainz (JGU) found such an unexpected property: He combined antiferromagnetic substances with non-magnetic atoms and found that, contrary to the current doctrine, a...

Half-billion-year-old microfossils may yield new knowledge of animal origins

When and how did the first animals appear? Science has long sought an answer to this question. Uppsala University researchers and colleagues in Denmark have now jointly found, in Greenland, embryo-like microfossils up to 570 million years old, revealing that organisms of this type were dispersed throughout the world. The study is published in Communications Biology.

Yin and Yang: Two signaling molecules control growth and behavior in bacteria

Bacteria are considered to be true experts in survival. Their rapid adaptive response to changing environmental conditions is based, among other things, on two competing signaling molecules. As the 'Yin and Yang' of metabolic control they decide on the lifestyle of bacteria, as reported by researchers from the University of Basel. The new findings also play a role in the context of bacterial...

Trees set sixth-graders up for success

The transition to middle school is undeniably tough for many sixth-graders, even in the best of times. Mounting academic demands, along with changes in peer dynamics and the onset of puberty, result in a predictable and sometimes irreversible slump in academic performance.

New 'genomic' method reveals atomic arrangements of battery material

Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory, Stony Brook University (SBU), the Materials Project at DOE's Lawrence Berkeley National Laboratory (Berkeley Lab), the University of California, Berkeley, and European collaborators have developed a new way to decipher the atomic-level structure of materials based on data gleaned from ground-up powder samples. They...

Researchers find a way to turn glass into smart surfaces

ITMO researchers have created a surface that can turn normal glass into a smart surface. This technology can be used in the production of AR screens that equip users with additional information about what is happening around. The surface will also be able to convert solar energy into electricity. The research has been published in Laser & Photonics Reviews.

Europa glows: Radiation does a bright number on Jupiter's moon

As the icy, ocean-filled moon Europa orbits Jupiter, it withstands a relentless pummeling of radiation. Jupiter zaps Europa's surface night and day with electrons and other particles, bathing it in high-energy radiation. But as these particles pound the moon's surface, they may also be doing something otherworldly: making Europa glow in the dark.

A biomimetic membrane for desalinating seawater on an industrial scale

The treatment of seawater, including its large-scale desalination, is a major challenge for our society. Reverse osmosis is one of the most widely used techniques for the desalination of water. Some of the membranes currently used are artificial channels of water inserted into lipid layers. But their large-scale performance is not satisfactory under real osmotic pressure and salinity conditions.