Meth use, intimate partner violence weaken immune function in HIV-positive men
232,132 articles from PhysOrg
How you speak up at work can affect whether you're picked for a team
A study of HIV-positive black and Latino men who have sex with men finds the use of methamphetamine combined with intimate partner violence boosted the activity of genes that regulate the body's inflammatory and antiviral functions. The combination may lead to exhaustion of the immune system in people living with HIV, increasing the risk for developing chronic diseases such as cardiovascular...
Chemical pollutants disrupt reproduction in anemonefish, study finds
Business leaders and management experts often encourage people to speak up in the workplace. Suggesting a creative idea or a more efficient way to work can help companies overcome challenges and meet goals. But new research shows another, more subtle and often overlooked form of speaking up has a big effect on the way work gets done and how teams come together.
Ocean pollution is unfortunately becoming more commonplace, raising concerns over the effect of chemicals that are leaching into the water. In a new study, researchers have discovered how these chemicals can affect the reproduction in common anemonefish Amphiprion ocellaris.
FRIDAY 3. DECEMBER 2021
Research finds nasal problem plagued long-nosed crocodile relatives
To capture single photons, researchers create an interference 'wall'
Research published in the journal Anatomical Record finds that humans have more in common with endangered crocodiles than we think—namely, a deviated septum.
Understanding mouthfeel of food using physics
Photons are the basis for many next-generation quantum technologies, including ultra-secure quantum communications and potentially game-changing quantum computers.
Where did western honey bees come from? New research finds the sweet spot
Food texture can make the difference between passing on a plate and love at first bite. To date, most studies on food texture center on relating a food's overall composition to its mechanical properties. Our understanding of how microscopic structure and changes in the shape of food affect food texture, however, remains underdeveloped.
Studying our solar system's protective bubble
For decades, scientists have hotly debated the origin of the western honey bee. Now, new research led by York University has discovered these popular honey-producing bees most likely originated in Asia.
Potential new gene editing tools uncovered
A multi-institutional team of astrophysicists headquartered at Boston University, led by BU astrophysicist Merav Opher, has made a breakthrough discovery in our understanding of the cosmic forces that shape the protective bubble surrounding our solar system—a bubble that shelters life on Earth and is known by space researchers as the heliosphere.
3D fault information improves alert accuracy for earthquake early warning
Few developments have rocked the biotechnology world or generated as much buzz as the discovery of CRISPR-Cas systems, a breakthrough in gene editing recognized in 2020 with a Nobel Prize. But these systems that naturally occur in bacteria are limited because they can make only small tweaks to genes. In recent years, scientists discovered a different system in bacteria that might lead to even more...
Toys prove to be better investment than gold, art, and financial securities
Three-dimensional fault models are generally more accurate than two-dimensional line models at sending ground shaking alerts to the correct areas as part of an earthquake early warning system, according to a new study.
Using green tea as reducing reagent for the preparation of nanomaterials to synthesize ammonia
Unusual ways of investment, such as collecting toys, can generate high returns. For example, secondary market prices of retired LEGO sets grow by 11% annually, which is faster than gold, stocks, and bonds, HSE University economists say. Their paper was published in the Research in International Business and Finance journal.
Lightweight space robot with precise control developed
Researchers have shown that green tea can be used as a reducing reagent for the preparation of nanomaterials to synthesize ammonia. Compared with bulk graphitic carbon nitride, the optimal sample had 2.93-fold photocatalytic nitrate reduction to ammonia activity (2.627 mg/h/gcat), and the NH3 selectivity increased from 50.77% to 77.9%. The team published their approach on September 06 in Energy...
Air bubbles sound climate change's impact on glaciers
Robots are already in space. From landers on the moon to rovers on Mars and more, robots are the perfect candidates for space exploration: they can bear extreme environments while consistently repeating the same tasks in exactly the same way without tiring. Like robots on Earth, they can accomplish both dangerous and mundane jobs, from space walks to polishing a spacecraft's surface. With space...
Two-dimensional bipolar magnetic semiconductors with electrically controllable spin polarization realized
As the world's temperatures rise, tidewater glaciers are receding and melting, releasing air trapped in the ice. Scientists can listen to the release of the air and potentially use the sounds to help them gauge the impact of climate change on the ice floes.
BESIII experiment: Search for new physics in charm energy region, progress and prospect
Two dimensional (2D) magnetic semiconductors, integrating semiconductivity, ferromagnetism and low dimensionality, serve as the cornerstone for high-speed nanospintronic devices. However, the practical applications of nowadays 2D magnetic semiconductors face two key problems: the rather low magnetic Curie temperature compared to room temperature, and the lack of a simple and efficient method to...
Fossils dug up 100 years ago rediscovered wrapped in old newspaper
In a recent review article published online in National Science Review, Prof. Shenjian Chen (Nanjing University) and Prof. Stephen Olsen (University of Chinese Academy of Sciences) review the major progress of the BESIII experiment in searching for new physics in Charm physics energy region, and prospect the potential of new physics search in the future.
Antarctica experiences rare total solar eclipse
A stash of rediscovered dinosaur bones wrapped in century-old newspapers is set to reveal two pasts: one set in the 1920s and the University of Alberta's earliest paleontology, the other some 70 million years ago.
How can music, dance and art help improve air pollution?
A rare total solar eclipse in Antarctica this weekend (Saturday 4 December) is giving researchers a unique opportunity to learn more about how solar eclipses affect space weather. The next total eclipse in Antarctica will not be until 2039.
The role of messenger RNA in DNA repair
Music, dance, art and storytelling have allowed an international team of researchers to reveal aspects of air pollution in Nairobi that would not have been identified otherwise.
Tropical forests recover after deforestation
An organism's genome could be compared to a complex system of instructions that allows it not only to develop, but also to carry out all the activities essential to its survival. To do this, this genome needs to be expressed correctly, i.e. these instructions need to be "read" properly, and the information it contains must not be altered or degraded over time.
Astronomers discover hot, dense planet with eight-hour year
Tropical forests are disappearing at an alarming rate through deforestation, but they also have the potential to regrow naturally on abandoned lands. This has been shown by an international study led by scientists from Wageningen University. How a forest recovers, depends on the amount of rainfall, the age of the forest, and the functional characteristics of the tree species.
Invasive ants can threaten ecosystems by damaging plants at the roots
In a new study, published in the journal Nature, the researchers show that the planet, which is 31 light years from Earth, is one of the lightest among the nearly 5,000 exoplanets (planets outside our own solar system) that are known today, with half the mass of Earth. It has a diameter of just over 9,000 kilometers—slightly larger than Mars.
Exoplanets in debris disks
Invasive ant species can be found in almost every ecosystem on earth, but the impact these invaders may have on plant health has only recently been investigated by scientists. A new study published in Journal of Ecology is the first of its kind to find that invasive ants can disrupt plants' growth and photosynthesis by nesting at their roots—potentially threatening plants in tropical and...
A 'no snow' California could come sooner than you think
Debris disks around main-sequence stars are tenuous belts of dust thought to be produced when asteroids or other planetesimals collide and fragment. They are common: more than about a quarter of all main-sequence stars have debris disks and, since these disks can be hard to detect, it is likely that the fraction is even higher. Current instruments are only able to detect debris disks in systems...
It was 55 degrees and sunny Thursday at Sugar Bowl Resort, where the opening day of the 2021 ski season—already delayed because of warm weather—was still listed as "TBD."