Feb 7, 2024
Scientists Are About to Chart a Course Through the Fabric of Space-Time
Posted by Dan Breeden in category: cosmology
The LISA mission will use precision lasers over millions of kilometers to unveil the echoes of black hole mergers.
The LISA mission will use precision lasers over millions of kilometers to unveil the echoes of black hole mergers.
Apple is reportedly looking to use graphene to reduce thermal issues on the iPhone 16 Pro series.
A new type of ultra-sensitive sensor has been made to detect incredibly low levels of lead ions in water. This advanced sensor may pave the way for developing next-generation water quality monitoring systems.
What distinguishes the sensor is its capacity to detect lead ions at concentrations as low as one femtomole per liter of water, demonstrating an incredibly high degree of sensitivity.
According to the University of California, San Diego experts, this range is “one million times” more sensitive than any known sensing technologies for water contamination monitoring.
Ford thinks cheaper vehicles are crucial for competing with upcoming vehicles from Tesla and Chinese EV companies.
Imagine you work for a car rental agency or a package delivery company and you’re in charge of a fleet of vehicles. If you’re switching to EV vehicles, it becomes more complex to manage your vehicles due to long charging time and limited charging point availabilities.
Guided Energy, a French startup that raised $5.2 million from Sequoia Capital and Dynamo Ventures at the end of 2023, is building a software tool that help EV fleet operators when it comes to charge management and dispatch. The company aggregates data from vehicles, public and private charging points and uses machine learning to tell you when and where you’re supposed to charge your vehicles.
“The beauty of the EV ecosystem is that it is all online. This means, we connect to both EVs and charging points directly. Where customers already have telematics or supervision platforms in place, we can integrate with them using APIs into our platform, giving them a single, real-time, unified view of their EV operations,” co-founder and CEO Anant Kapoor told me.
Meta Platforms will begin detecting and labeling images generated by other companies’ artificial intelligence services in the coming months, using a set of invisible markers built into the files, its top policy executive said on Tuesday.
Meta is promising to roll out auto-labeling for AI-generated images — as soon as it figures out how, that is.
Nick Clegg, Meta’s president of global affairs, said in a policy update that the company is currently working with “industry partners” to formulate criteria that will help identify AI content. Once those criteria are determined, Meta will begin automatically labeling posts featuring any AI-generated images, video, or audio “in the coming months.”
“This approach represents the cutting edge of what’s technically possible right now. But it’s not yet possible to identify all AI-generated content, and there are ways that people can strip out invisible markers,” Clegg wrote. “So we’re pursuing a range of options. We’re working hard to develop classifiers that can help us to automatically detect AI-generated content, even if the content lacks invisible markers.”
Launching rockets into space with atomic bombs is a crazy idea that was thankfully discarded many decades ago. But as Richard Corfield discovers, the potential of using the energy from nuclear-powered engines to drive space travel is back on NASA’s agenda.
In 1914 H G Wells published The World Set Free, a novel based on the notion that radium might one day power spaceships. Wells, who was familiar with the work of physicists such as Ernest Rutherford, knew that radium could produce heat and envisaged it being used to turn a turbine. The book might have been a work of fiction, but The World Set Free correctly foresaw the potential of what one might call “atomic spaceships”
The idea of using nuclear energy for space travel took hold in the 1950s when the public – having witnessed the horrors of Hiroshima and Nagasaki – gradually became convinced of the utility of nuclear power for peaceful purposes. Thanks to programmes such as America’s Atoms for Peace, people began to see that nuclear power could be used for energy and transport. But perhaps the most radical application lay in spaceflight.
A study at the University of Cologne’s CECAD Cluster of Excellence in Aging Research has identified a protein complex that is activated by defects in the spliceosome, the molecular scissors that process genetic information. Future research could lead to new therapeutic approaches to treat diseases caused by faulty splicing.
The genetic material, in the form of DNA, contains the information that is crucial for the correct functioning of every human and animal cell. From this information repository, RNA, an intermediate between DNA and protein, the functional unit of the cell, is generated. During this process, the genetic information must be tailored for specific cell functions. Information that is not needed (introns) is cut out of the RNA and the important components for proteins (exons) are preserved.
A team of researchers led by Professor Dr. Mirka Uhlirova at the University of Cologne’s CECAD Cluster of Excellence in Aging Research has now discovered that if the processing of this information no longer works properly, a protein complex (C/EBP heterodimer) is activated and directs the cell towards a dormant state, known as cellular senescence. The results appear under the title “Xrp1 governs the stress response program to spliceosome dysfunction” in Nucleic Acids Research.