2,926 articles mezi dny 1.12.2022 a 31.12.2022
A sustainable path for energy-demanding photochemistry
Many photochemical processes rely on UV light from inefficient or toxic light sources that the LED technology cannot replace for technical reasons. An international team of scientists led by Professor Christoph Kerzig of Johannes Gutenberg University Mainz (JGU) in Germany and Professor Nobuhiro Yanai of Kyushu University in Japan has now developed the first molecular system for the conversion of...
‘Citizen rewilders’ invited to buy shares in Scottish Highlands projects
Firm restoring nature on two estates hopes to give ordinary investors 5% annual return over 10 yearsOrdinary people are being invited to invest in projects to rewild the Scottish Highlands by a company that is restoring nature on two estates and seeking to expand its rewilding portfolio.“Citizen rewilders” can invest a minimum of £50 and up to £200,000 in £10 shares in Highlands Rewilding,...
New and more detailed map of antimicrobial resistance
During the COVID-19 pandemic, the world has become aware of the value of using sewage analyses to monitor disease development in an area. However, at DTU National Food Institute, a group of researchers has been using sewage monitoring from throughout the world since 2016 as an effective and inexpensive tool for monitoring infectious diseases and antimicrobial resistance.
Whispering gallery modes with fractional optical angular momentum in photonic crystal micro-rings
Whispering gallery modes, a type of wave that can travel around concave surfaces, have proved to be promising for the development of new technologies, particularly in photonics. Due to geometrical limitations, in circularly symmetric optical microresonators (i.e., micrometer-scale structures that can confine light) these modes exhibit integer quantized angular momentum values. While numerous...
How could climate change alter our diets?
As climate change alters rainfall and temperatures, and provokes heat waves and droughts, the quality and quantity of crops suffer. Such changes to yields could significantly jeopardize food security for the world's growing population.
New theory explains magnetic trends in high-temperature superconductors
In just about any situation in which electricity is being used, whether it is lighting a bedroom at night, keeping frozen food cold, or powering a car that is taking a commuter to work, some of that electrical energy is lost as heat. This is called resistance. Materials with lower resistance are better at conducting electricity while materials with higher resistance are worse at it.
Predicting new quantum echoes: Ultrafast lightwave control of electrons in crystals
The quantum realm of atomic particles is embedded with randomness. Still, precise control of quantum systems, such as quantum computers, is of great importance for modern quantum science and prospective quantum technology.
Study rules out initially clustered primordial black holes as dark matter candidates
Primordial black holes (PBHs) are fascinating cosmic bodies that have been widely investigated by astrophysicists worldwide. As suggested by their name, these are black holes believed to have appeared in the universe's early days, less than a second after the Big Bang.
Team develops two novel, ultra-stable hydrogen production catalysts
Clean hydrogen energy is a good alternative to fossil fuels and is critical for achieving carbon neutrality. Researchers around the world are looking for ways to enhance the efficiency and lower the cost of hydrogen production, particularly by improving the catalysts involved.
A targeted approach to reducing the health impacts of crop residue burning in India
To clear the way for planting wheat in November, a farmer in Punjab, India, sets aflame the leftover straw, or stubble, of a harvested rice paddy crop in October. The burning residue fills the air with carbon monoxide, ozone, and fine particulate matter (PM2.5) that will make it harder to breathe for days afterward and for miles around. It's a scene that's replicated on about 2 million farms in...
Mathematicians propose alternative method to map neuron activity
A paper by researchers in the University at Buffalo's Department of Mathematics that could impact the way neuron-to-neuron communications are mapped was recently published in Communications Physics.
Researchers reveal structural evolution during molybdenum carbides formation at atomic level
Transition metal carbides have attracted much attention due to their unique catalytic properties similar to precious metals. Among them, α-phase molybdenum carbides (α-MoC1-x) show high activity in activation of water at an ultra-low temperature in water-gas shift and aqueous-phase reforming of methanol reaction.
Scientists develop novel hyperspectral surface plasmon resonance microscopy system
Hyperspectral surface plasmon resonance microscopy (HSPRM) is an advanced analytical technique for spectral imaging and chemical and biological sensing, which enables high-resolution visualization and precise quantification of chemical and biological analytes.
The Download: Neuralink updates, and GPT-3 fixes
This is today’s edition of The Download, our weekday newsletter that provides a daily dose of what’s going on in the world of technology. Elon Musk’s Neuralink hopes to test its brain implant in a human next year Elon Musk’s brain-computer interface company Neuralink is planning to test a brain implant in humans in six months, the…
New analysis of cellular 'vehicles' drives a deeper understanding of ALS, Alzheimer's
- ScienceDaily
- 22/12/1 14:22
Scientists have taken a key step toward better understanding neurodegenerative diseases by using a suite of biophysical techniques to learn more about a motor protein whose malfunction is associated with many disorders.
New clues about how carbon dioxide affects bumble bee reproduction
- ScienceDaily
- 22/12/1 14:21
While a beekeeper puffing clouds of carbon dioxide into a hive to calm the insects is a familiar image to many, less is known about its other effects on bees. A recent study revealed clues about how the chemical compound affects bee physiology, including reproduction.
Biodiversity unbalanced as ice-free Antarctic areas grow
- ScienceDaily
- 22/12/1 14:21
A study into the impact of global warming on the biodiversity of the Antarctic has identified how predicted expansion of ice-free areas will impact native animals and plants, paving the way for the invasion of non-native species in Antarctica.
Automated chemical reaction prediction: Now in stereo
- ScienceDaily
- 22/12/1 14:21
Automated reaction path search method predicts accurate stereochemistry of pericyclic reactions using only target molecule structure.
Study in mice suggests that expression of estrogen-related gene can impact post-menopausal breast cancer risk and prevention strategies
- ScienceDaily
- 22/12/1 14:21
In a study using a mouse model of aging that mimics breast cancer development in estrogen receptor-positive post-menopausal women, investigators have determined that over-expression, or switching on of the Esr1 gene, could lead to elevated risk of developing estrogen receptor-positive breast cancer in older women.
Flowers show their true colors
- ScienceDaily
- 22/12/1 14:21
A plant common to Japan, Causonis japonica, is the first to show a newly discovered trait. Its flowers can change color depending on the stage of its maturation cycle, and then change back to its original color. Although many flowers have been shown to change color depending on their maturation phase, Causonis japonica is the only known example of bidirectional color change. The pigments involved...
Fitness levels can be accurately predicted using wearable devices -- no exercise required
- ScienceDaily
- 22/12/1 14:21
Researchers have developed a method for measuring overall fitness accurately on wearable devices -- and more robustly than current consumer smartwatches and fitness monitors -- without the wearer needing to exercise.
Integrated platform promises to accelerate drug discovery process
- ScienceDaily
- 22/12/1 14:21
Many successful drugs have their origins in natural sources such as plants, fungi, and bacteria, but screening natural products to identify potential drugs remains a difficult undertaking. A new approach using molecular biology, analytical chemistry, and bioinformatics to integrate information from different screening platforms addresses some of the biggest challenges in natural products drug...
Hubble Views a Cloud-Filled, Starry Scene
Portal origin URL: Hubble Views a Cloud-Filled, Starry ScenePortal origin nid: 484145Published: Thursday, December 1, 2022 - 08:00Featured (stick to top of list): noPortal text teaser: Bright, blue-white stars of the open cluster BSDL 2757 pierce through the rusty-red tones of gas and dust clouds in this NASA Hubble Space Telescope image.Portal image: Bright....