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Nov 2, 2023

Simulating spins, spirals and shrinking devices for new classes of energy-efficient materials

Posted by in categories: materials, particle physics

The diamond in an engagement ring, the wonder-material graphene and the lead in a humble pencil are all formed from carbon, but display profoundly different characteristics. Carbon materials such as these are among the most famous examples of how diverse properties can emerge in materials, based only on the rearrangement of the structure of atoms.

The goal of the RIKEN Center for Emergent Matter Science (CEMS) in Saitama, Japan, is to develop materials for new, energy-efficient technologies. The usual approach to synthesizing new materials involves looking for improved properties such as strength and durability, or enhanced conduction of electricity and heat.

But CEMS is pioneering an alternative approach that turns that standard approach on its head. First, we think of the properties needed for a new device, use data from RIKEN’s new repository and simulation platform to calculate the atomic structure that provides these features and then build the bespoke material.

Nov 2, 2023

Optical fiber–based, single-photon light source at room temperature for next-generation quantum processing

Posted by in categories: computing, encryption, quantum physics

Quantum-based systems promise faster computing and stronger encryption for computation and communication systems. These systems can be built on fiber networks involving interconnected nodes which consist of qubits and single-photon generators that create entangled photon pairs.

In this regard, rare-earth (RE) atoms and ions in are highly promising as generators. These materials are compatible with fiber networks and emit photons across a broad range of wavelengths. Due to their wide spectral range, optical fibers doped with these RE elements could find use in various applications, such as free-space telecommunication, fiber-based telecommunications, quantum random number generation, and high-resolution image analysis. However, so far, single-photon light sources have been developed using RE-doped crystalline materials at cryogenic temperatures, which limits the practical applications of quantum networks based on them.

In a study published in Physical Review Applied on 16 October 2023, a team of researchers from Japan, led by Associate Professor Kaoru Sanaka from Tokyo University of Science (TUS) has successfully developed a single-photon light source consisting of doped ytterbium ions (Yb3+) in an amorphous silica at room temperature. This newly developed single-photon light source eliminates the need for expensive cooling systems and has the potential to make quantum networks more cost-effective and accessible.

Nov 2, 2023

Why do fusion reactors take on a doughnut-like shape?

Posted by in categories: nuclear energy, particle physics

Nuclear fusion holds the promise to generate energy in a clean, safe, and nearly inexhaustible way. The physical idea of fusion involves confining fuels at unearthly temperatures of approximately 150,000,000 degree Celsius which fusion reactions between atomic nuclei can happen. The fuels of interest, deuterium and tritium (isotopes of hydrogen), exist in the state of plasma. Clearly, containing these extremely hot plasmas with solid walls is unfeasible.

A plasma is an ionised gas comprising charged particles, both ions and electrons. Fortunately, the dynamics of charge particles are subject to constraints along magnetic field lines. This insight forms the basis of our current approach: constructing a magnetic bottle using powerful magnetic fields that effectively trap the plasma along these intangible field lines.

One of the most iconic magnetic confinement machine designs is the tokamak — a toroidally-shaped device, often likened to a doughnut. The name ‘tokamak’ is derived from the Russian acronym for ‘to roidal cha mber with ma gnetic c oils.’

Nov 2, 2023

The First-Ever Lunar Farm Shows That Plants Can Grow On The Moon

Posted by in categories: food, space, sustainability

Plants are not just able to survive in low gravity such as on the Moon, two new papers suggest – they may prefer it, at least based on the only species to sprout.

When Chang’e 4 landed on the Moon in January 2019 it carried with it a payload that could dictate the future of space exploration: seeds of four plant species it sought to grow on the lunar surface. The germination of a single cotton seed attracted plenty of attention at the time, but there’s more to growth than just sprouting. If crops grown on the Moon are less productive or more fragile than those on Earth, it’s going to be a big problem.

It’s taken more than four years, but important results from the experiment have now been released and they suggest that for all the obstacles to establishing colonies on the Moon and Mars, growing food might not be one. Then again, it’s still very early days.

Nov 2, 2023

Mechanism That Forms Connections in the Brain Identified

Posted by in categories: chemistry, life extension, neuroscience

How are synapses formed, those points of contact that allow the transmission of information from one neuron to the other? Working with an international team, researchers from the Leibniz-Forschungsinstitut für Molekulare Pharmakologie (FMP) have now uncovered a crucial mechanism and elucidated the identity of the axonal transport vesicles that generates synapses. The findings provide an important basis for promoting the regeneration of nerve cells and counteracting the aging process in the future. The results have just been published in the journal Science.

Whether in the brain or in the muscles, wherever there are nerve cells, there are synapses. These contact points between neurons form the basis for the transmission of excitation, i.e. communication between neurons. As in any communication process, there is a sender and a receiver: Nerve cell processes called axons generate and transmit electrical signals thereby acting as signal senders. Synapses are points of contact between axonal nerve terminals (the pre-synapse) and post-synaptic neurons. At these synapses, the electrical impulse is converted into chemical messengers that are received and sensed by the post-synapses of the neighboring neuron. The messengers are released from special membrane sacs called synaptic vesicles.

Nov 2, 2023

Costs and Benefits of Artificial Intelligence Editing Tools

Posted by in category: robotics/AI

Should I use AI to edit my research paper?

The effectiveness of AI editing software depends on how it is used and what it is used for. In this article, we discuss its costs and benefits, and how to determine which option is best for your needs.

Find out more 👇.

Continue reading “Costs and Benefits of Artificial Intelligence Editing Tools” »

Nov 2, 2023

An Updated Review of Bioactive Peptides from Mushrooms in a Well-Defined Molecular Weight Range

Posted by in categories: biological, chemistry

Toxins high-cite paper🤩

Title: ☎Dr. Sara Ragucci and Dr. Antimo Di Maro.

Read this review to have an overview of Mushrooms:

Continue reading “An Updated Review of Bioactive Peptides from Mushrooms in a Well-Defined Molecular Weight Range” »

Nov 2, 2023

Tall children may be at greater risk of some forms of heart disease

Posted by in category: biotech/medical

Tall 10-year-olds may be more at risk of developing an irregular heart rate in later life than their shorter counterparts, but less at risk of having a stroke.

By David Cox

Nov 2, 2023

Cancer Drug May Be Repurposed for Inflammatory Diseases

Posted by in categories: biotech/medical, genetics

A cancer drug in the final stages of clinical trials may be able to help treat a range of inflammatory diseases including gout, heart failure, cardiomyopathy, and atrial fibrillation, according to scientists at the University of Cambridge.

Their findings are published in the Journal of Clinical Investigation in an article titled, “PLK1 inhibition dampens NLRP3 inflammasome-elicited response in inflammatory disease models.”

“Unabated activation of the NLR family pyrin domain–containing 3 (NLRP3) inflammasome is linked with the pathogenesis of various inflammatory disorders. Polo-like kinase 1 (PLK1) has been widely studied for its role in mitosis,” wrote the researchers. “Here, using both pharmacological and genetic approaches, we demonstrate that PLK1 promoted NLRP3 inflammasome activation at cell interphase. Using an unbiased proximity-dependent biotin identification (Bio-ID) screen for the PLK1 interactome in macrophages, we show an enhanced proximal association of NLRP3 with PLK1 upon NLRP3 inflammasome activation. We further confirmed the interaction between PLK1 and NLRP3 and identified the interacting domains.”

Nov 2, 2023

Saudi Aramco CEO Warns of New Threat of Generative AI

Posted by in categories: cybercrime/malcode, robotics/AI

The world’s largest oil company issued a warning this week that the energy sector is vulnerable to attacks, particularly with the advent of new technologies such as generative AI.

Amin H. Nasser, CEO of Saudi Aramco, told the Global Cybersecurity Forum that the energy sector is an attractive target to those who want to do harm. “Any large-scale disruption to the steady supply of energy would have an immediate and significant impact around the world,” he said.

According to local media reports, Nasser said new technologies, such as generative AI, are game changers for many industries but must be assessed to identify how they may pose new threats, and any vulnerabilities must be addressed before being fully deployed.