145 articles from WEDNESDAY 3.5.2023
Light amplification by stimulated emission from electrically driven colloidal quantum dots finally achieved
In a result decades in the making, Los Alamos scientists have achieved light amplification with electrically driven devices based on solution-cast semiconductor nanocrystals—tiny specs of semiconductor matter made via chemical synthesis and often called colloidal quantum dots.
Pressure required to launch a rock from Mars into space much lower than thought, discovers study
In August 1865, a 10-pound rock fell from space to Earth, landing with a bang in the remote village of Sherghati, India. After being recovered by witnesses to the event, the stone passed into the possession of a local British magistrate who endeavored to identify the source of the strange object. After more than a century of studying the meteorite fragments—so-called shergottites—researchers...
Frenchman Mountain Dolostone: 500 million-year-old Grand Canyon rock layer finally gets a name
The Grand Canyon is visited by millions of admirers each year. So, naturally, you'd think that all of its rock layers had been studied and named. But you'd be wrong.
Video: Geoffrey Hinton talks about the “existential threat” of AI
Deep learning pioneer Geoffrey Hinton announced on Monday that he was stepping down from his role as a Google AI researcher after a decade with the company. He says he wants to speak freely as he grows increasingly worried about the potential harms of artificial intelligence. Prior to the announcement, Will Douglas Heaven, MIT Technology Review’s senior editor for AI, interviewed Hinton about...
Luxury shoppers opting for high-end experiences over goods, suggests study
In an ever-evolving, post-pandemic world, more and more consumers of luxury goods are opting for unplanned, high-end experiences instead, according to researchers at the University of Houston Conrad N. Hilton College of Global Hospitality Leadership.
Breakthrough for sweat: Health monitoring device
- ScienceDaily
- 23/5/3 21:46
Sweat is more than just a sign of a good workout. It holds vital information about our health, providing clues to dehydration, fatigue, blood sugar levels and even serious conditions such as cystic fibrosis, diabetes and heart failure. Researchers have taken a giant leap forward in sweat analysis with an innovative 3D-printed wearable sweat sensor called the 'sweatainer.'
'Black sheep' of helper T cells may hold key to precision allergy treatment
- ScienceDaily
- 23/5/3 21:46
A new study sheds light on how a rare type of helper T cell, called Th9, can drive allergic disease, suggesting new precision medicine approaches to treating allergies in patients with high levels of Th9.
Fundamentals of water as a solvent could lead to greener cellulose-based products
- ScienceDaily
- 23/5/3 21:46
Water can change its solubility characteristics depending upon what it interacts with.
Do your homework to prep for the 2023 and 2024 eclipses
- ScienceDaily
- 23/5/3 21:46
This year and next, Americans will have the extraordinary opportunity to witness two solar eclipses as both will be visible throughout the continental U.S. Both occurrences promise to be remarkable events and teachable moments but preparation is essential. Astronomers provide a practical playbook to help teachers, students, and the general public prepare for the eclipse events.
Experiment demonstrates continuously operating optical fiber made of thin air
Researchers at the University of Maryland (UMD) have demonstrated a continuously operating optical fiber made of thin air.
We know that carbon capture from the atmosphere is possible. But how do we get there?
The UN's Intergovernmental Panel on Climate Change has now made its message very clear. Our actions during the next seven years will influence the development of the global climate for the next one thousand. This means that we must make use of all measures available to limit the rise in global temperatures.
New high-speed, two-photon microscope for precise biological imaging
Two-photon microscopy (TPM) has revolutionized the field of biology by enabling researchers to observe complex biological processes in living tissues at high resolution. In contrast to traditional fluorescence microscopy techniques, TPM makes use of low-energy photons to excite fluorescent molecules for observation. This, in turn, makes it possible to penetrate the tissue much more deeply, and...
European company designs a space station with artificial gravity
The International Space Station (ISS) is nearing the end of its service. While NASA and its partners have committed to keeping it in operation until 2030, plans are already in place for successor space stations that will carry on the ISS' legacy.
Australian report: Flood-threatened communities strengthened by their collective insights
The experiences of people affected by the extreme floods in New South Wales and Queensland in 2022 are providing vital insights on preparedness, response and the early stages of recovery to help reduce future flood risk.
Researchers detect and classify multiple objects without images
Researchers have developed a new high-speed way to detect the location, size and category of multiple objects without acquiring images or requiring complex scene reconstruction. Because the new approach greatly decreases the computing power necessary for object detection, it could be useful for identifying hazards while driving.
Enhancing thermoelectricity with guided impurity position control
Thermoelectric materials, substances that convert temperature difference into electricity, find a multitude of applications involving the conversion of waste heat into useful electrical energy. However, they often need to rely on heavy rare earth elements for efficient thermoelectric conversion.
Advancing neutron diffraction for accurate structural measurement of light elements at megabar pressures
For decades, scientists sought a way to apply the outstanding analytical capabilities of neutrons to materials under pressures approaching those surrounding the Earth's core. These extreme pressures can rearrange a material's atoms, potentially resulting in interesting new properties.
Does everybody get 'a piece of the national cake'? How Nigerian politicians cooperate to distribute public resources
Since 2017, political scientist Leila Demarest has immersed herself into the dynamics of Nigeria's National Assembly, the federal parliament of the country. How does this institution work, and how do politicians cooperate? And how are public resources, mainly funded by oil money, distributed among the different regions?
Hunting for life's building blocks at minus 250 degrees Celsius
Searching for life's building blocks light-years away is an important task of the James Webb Space Telescope. But how does it know what to look for? Ph.D. student Marina Gomes Rachid is offering a helping hand by mapping out molecules that could exist in deep space.
Study shows more woodlands will not impact tourism
Hiking, cycling, climbing and boating. When we take time off from work or school, we like to go out into nature. The landscape in other words play an important role for our vacations. To promote biodiversity and carbon sequestration there is a focus on planting more trees, especially in upland areas such as Howgill Fells.
A micropaleontology manuscript written 'on the barricades'
In the course of the younger Tertiary, a sea spread over the territory of Europe up to the Black and Caspian seas, whose outcrop, the Eastern Paratethys, connected with the Indian Ocean approximately in the area of Iran. Together with the Mediterranean Sea, it formed an important link between the Indian Ocean and the Atlantic and, thanks to the flow of warm water masses in subtropical to...
Do your homework to prep for the 2023 and 2024 eclipses
This year and next, Americans will have the extraordinary opportunity to witness two solar eclipses as both will be visible throughout the continental U.S. On Oct. 14, 2023, the moon will obscure all but a small annulus of the sun, producing a "ring of fire" eclipse. On April 8, 2024, the eclipse will be total in a band stretching from Texas to Maine.
Study finds shoppers' masking compliance influenced their in-store behaviors
As the coronavirus began to spread globally, face masks were recommended in public settings to protect against transmission, and compliance varied significantly. In a new study of people shopping in a large Chinese store in early 2020, researchers examined the motives behind customers' compliance with mask recommendations and how their shopping behaviors changed with the onset of the pandemic. The...
Novel spider silk materials can be optimized to produce cell-specific effects
Materials made of spider silk can be specifically modified or processed in such a way that living cells of a certain type adhere to them, grow and proliferate. This has been discovered by researchers at the University of Bayreuth under the direction of Prof. Dr. Thomas Scheibel.