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139,626 articles from ScienceDaily

Supersymmetry-inspired microlaser arrays pave way for powering chip-sized optical systems

Ring microlasers are eyed as potential light sources for photonic applications, but they first must be made more powerful. Combining multiple microlasers into an array solves only half of the problem, as this adds noisy 'modes' to the resulting laser light. Now, thanks to the math behind supersymmetry theory, engineers have achieved single-mode lasing from such an array. By calculating the...

Repurposing tabletop sensors to search for dark matter

Researchers across the dark matter community that have begun to wonder if they are looking for the right type of dark matter. They have proposed a new way to look for the particles that might make up dark matter by repurposing existing tabletop sensor technology.

Crohn's disease patients have specific IgG antibodies to human bacterial flagellins

Last year, researchers used a mouse model that included immune-reactive T cells from patients with Crohn's disease in a proof-of-principle demonstration that a flagellin-directed immunotherapy might provide similar benefits in patients. Now they have moved a step closer to possible clinical testing of this treatment, with a study that describes IgG antibodies in Crohn's disease specific for...

Our immune systems blanket the SARS-CoV-2 spike protein with antibodies

A previously underappreciated part of the body's natural defense against SARS-CoV-2, called non-RBD-directed antibodies, actually plays a major role in combating the virus, according to a new study. That's good news for scientists designing the next generation of vaccines to protect against variants of the virus or future emerging coronaviruses.

Stabilization of the borafluorene anion with carbenes

The incorporation of boron into polycyclic aromatic hydrocarbon systems leads to interesting chromophoric and fluorescing materials for optoelectronics, including organic light-emitting diodes (OLEDS) and field-effect transistors, as well as polymer-based sensors. A research team has now introduced a new anionic organoborane compound. Synthesis of the borafluorene succeeded through the use of...

Leather-like material created from silk proteins

Engineers have created an environmentally friendly leather alternative made from silk. The material can be printed into different patterns and textures, has similar physical properties to real leather, and can withstand the folding, piercing, and stretching typically used to create leather goods.

International study links brain thinning to psychosis

Subtle differences in the shape of the brain that are present in adolescence are associated with the development of psychosis, according to an international team. The 'sobering' results were made using the largest study to date of brain scans in adolescents at risk for psychosis.

Fast changing smells can teach mice about space

Researchers have found that mice can sense extremely fast and subtle changes in the structure of odors and use this to guide their behavior. The findings alter the current view on how odors are detected and processed in the mammalian brain.

New bonobo genome fine tunes great ape evolution studies

A new, high-quality bonobo genome assembly has been constructed. It is allowing scientists to more accurately compare the bonobo genome to that of other great apes - the gorilla, orangutan, chimpanzee - and to the modern human. This analysis is revealing new information about hominid evolution, distinctions between chimps and bonobos and genetic relations among present-day hominids, and predicts a...

The oldest human burial in Africa

A new study details the earliest modern human burial in Africa. The remains of a 2.5 to 3 year-old child were found in a flexed position, deliberately buried in a shallow grave directly under the sheltered overhang of the cave. The interment at Panga ya Saidi joins increasing evidence of early complex social behaviors in Homo sapiens.

Novel CBD analog shows promising pain-halting effects in mice

Studies have shown that while CBD reduces pain sensation in animals, its ability to do so in humans is limited by low bioavailability, the extent to which the drug successfully reaches its site of action. Now, new research suggests this obstacle may be overcome by a novel CBD analog known as KLS-13019.

'Oddball supernova' appears strangely cool before exploding

Astronomers examined a massive star two-and-a-half years before it exploded into a supernova. At the end of their lives, cool, yellow stars are typically shrouded in hydrogen, which conceals the star's hot, blue interior. But this yellow star, located 35 million light-years from Earth in the Virgo galaxy cluster, was mysteriously lacking this crucial hydrogen layer at the time of its explosion.

Detailed look at how charge transfer distorts a molecule's structure

When light hits certain molecules, it dislodges electrons that then move from one location to another, creating areas of positive and negative charge. This 'charge transfer' is highly important in many areas of chemistry, photosynthesis and semiconductor devices and solar cells. A new study reveals how a molecule's structure changes as charge is redistributed, with some chemical bonds getting...

Restricting growth, spread of head and neck cancers

Researchers have discovered a key molecule that allows cancer stem cells to bypass the body's natural immune defenses, spurring the growth and spread of head and neck squamous cell cancers. Their study, conducted in mice, also demonstrates that inhibiting this molecule derails cancer progression and helps eliminate these stem cells.