Page 10

Nov 28, 2023

Scientists simulate exoplanet haze in lab to decode alien worlds

Posted by in categories: chemistry, space

The scientists were able to recreate conditions that favor the generation of hazy skies on extraterrestrial planets, in laboratory settings.

Roberto Molar Candanosa/Johns Hopkins University.

This makes it challenging to ascertain the chemical compositions of some exoplanets due to their opaque atmospheres, often obscured by clouds or haze.

Nov 28, 2023

Experts use crowdsourced data to train bots rapidly with human help

Posted by in category: robotics/AI

Researchers developed the Human Guided Exploration (HuGE) approach that doesn’t rely on expertly designed reward functions for AI agents learning new tasks.

Stellalevi / iStock.

HuGE doesn’t rely on expertly designed reward functions for AI agents learning new tasks, according to MIT News.

Nov 28, 2023

Virgin Galactic announces state-of-the-art spaceship hub in Arizona

Posted by in categories: economics, space travel

Explore Virgin Galactic’s Mesa facility, a cutting-edge hub poised to revolutionize spacecraft manufacturing, boosting space travel capabilities and economic growth.

Virgin Galactic.

This move, detailed in a recent company release, outlines Virgin Galactic’s ambitious plans for its next-generation Delta class spaceships, aiming to boost production and flight frequency significantly.

Nov 28, 2023

Apple partner Foxconn to invest $1.5 billion in India

Posted by in category: futurism

Foxconn plans to invest $1.54 billion in India, the latest in its growing expansion plan, following a surge in revenues in the South Asian market.

Foxconn said in a stock exchange filing that the investment will help it fulfil “operational needs.” The investment comes two months after the Taiwanese firm said it plans to double its workforce and investment in India by next year.

Foxconn works with many firms including Apple and assembles their devices in plants in India as many tech giants look to shift part of their manufacturing base to India in a move that analysts describe as “China+1.”

Nov 28, 2023

Scientists identify protein combination that can stop lung cancer growth

Posted by in category: biotech/medical

Scientists may have figured out a brand new way to treat lung cancer by using a protein that inhibits tumor growth.

This previously unknown molecule pathway could help researchers develop personalized lung cancer treatments, a new study in the journal Proceedings of the National Academy of Sciences (PNAS) reveals.

The researchers found that a protein called RBM10—previously known to be a tumor suppressor—can inhibit the growth of lung cancer by stopping the function of another protein called c-Myc drives cancer cell growth when it is overexpressed in the body.

Nov 28, 2023

Patient Dies After Being Gene-Edited to Have Lower Cholesterol

Posted by in categories: bioengineering, biotech/medical, genetics

Researchers have been able to reduce dramatically the level of bad cholesterol in human subjects after injecting them with an experimental gene editing treatment, according to the science journal Nature, which is the first time this technique, called base editing, has been done on humans.

But at least one person died after receiving an infusion, prompting a round of safety concerns.

In the clinical trial, 10 subjects with congenitally high levels of bad cholesterol, aka low-density lipoprotein (LDL), were given an injection of VERVE-101, a gene-editing treatment that uses the base editing technique. This treatment then turned off the gene for the protein PCSK9, which is found in the liver and regulates LDL. High levels of LDL can lead to coronary heart disease.

Nov 28, 2023

Is Earth’s Magnetic Field on The Verge of Flipping Over? An Expert Explains

Posted by in category: energy


The Earth’s magnetic field plays a big role in protecting people from hazardous radiation and geomagnetic activity that could affect satellite communication and the operation of power grids. And it moves.

Continue reading “Is Earth’s Magnetic Field on The Verge of Flipping Over? An Expert Explains” »

Nov 28, 2023

Durable, inexpensive electrocatalyst generates clean hydrogen and oxygen from water

Posted by in categories: chemistry, energy, sustainability

A new electrocatalyst made of nickel (Ni), iron (Fe) and silicon (Si) that decreases the amount of energy required to synthesize H2 from water has been manufactured in a simple and cost-effective way, increasing the practicality of H2 as a clean and renewable energy of the future.

Hydrogen is a highly combustible gas that can help the world achieve its clean energy goals if manufactured in an environmentally responsible way. The primary hurdle to creating hydrogen gas from water is the large amount of energy required for the electrolysis of water, or splitting into hydrogen gas (H2) and oxygen (O2).

Most H2 produced today is derived from fossil fuels, which contributes to global warming. Manufacturing H2 from water through the (HER) requires the use of a catalyst, or agent that lowers the amount of energy required for a chemical reaction. Until recently, these catalysts were made up of , like platinum, reducing the cost-efficiency and practicality of clean hydrogen production.

Nov 28, 2023

Intel Advances in AI: Brain-Like Computing and Spiking Neural Networks Explained

Posted by in categories: futurism, robotics/AI

In this video I discuss Neuromorphic Computing and the Future of AI

Support me on Patreon:

Nov 28, 2023

Structure-related intrinsic electrical states and firing patterns of neurons with active dendrites

Posted by in categories: biotech/medical, neuroscience

Activity of neurons embedded in networks is an inseparable composition of evoked and intrinsic processes. Prevalence of either component depends on the neuron’s function and state (e.g. low/high conductance or depolarization states). Dominant intrinsic firing is thought functionally normal for the pacemaker neuron, but not for the sensory afferent neuron or spinal motoneuron serving to transmit rather than to originate signals. Activity of the multi-functional networked cell, depending on its intrinsic states, bears both cell-and network-defined features. Complex firing patterns of a neuron are conventionally attributed to complex spatial-temporal organization of inputs received from the network-mates via synapses, in vast majority dendritic. This attribution reflects widespread views of the within-cell job sharing, such that the main function of the dendrites is to receive signals and deliver them to the axo-somatic trigger zone, which actually generates the output pattern. However, these views require revisiting with account of active properties of the dendrites due to voltage-dependent channels found in the dendritic membrane of practically all types of explored neurons. Like soma and axon, the dendrites with active membrane are able to generate self-maintained, propagating depolarizations and thus share intrinsic pattern-forming role with the trigger zone. Unlike the trigger zone, the dendrites have complex geometry, which is subject to developmental, activity-dependent, or neurodegenerative changes. Structural features of the arborization inevitably impact on electrical states and cooperative behavior of its constituting parts at different levels of organization, from branches and sub-trees to voltage-and ligand-gated ion channels populating the membrane. Nearly two decades of studies have brought numerous phenomenological demonstrations of influence of the dendritic structure on firing patterns in neurons. A necessary step forward is to comprehend these findings and build a firm theoretical basis, including quantitative relationships between geometrical and electrical characteristics determining intrinsic firing of neurons. This Research Topic is aimed at bringing together contributions of researches from different domains of expertise and building a conceptual framework for deeper insight into the nature of dynamic intrinsic motifs in the firing patterns.

We welcome research and methodology papers, mini-reviews, conceptual generalizations and opinions on the following issues:

1. Electrical states of heterogeneous populations of ion channels: definition, life-times, meta-and multi-stability.

Page 10 of 10,105First7891011121314Last