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Showing posts from June, 2024

Research with hypersonic systems is not an easy thing.

"This is an artist’s depiction of a Hyper-X research vehicle under scramjet power in free-flight following separation from its booster rocket. New research into hypersonic jets may transform space travel by making scramjet engines more reliable and efficient, leading to aircraft-like spacecraft. Credit: NASA" (ScitechDaily, Revolution at Mach 10: NASA-Backed Hypersonic Jets Poised to Transform Space Travel) The main problem with hypersonic systems is how to control them on air. If the hypersonic aircraft's body is designed the wrong way, that causes thermal problems. But another problem is this: if the aircraft's shape is wrong, the pressure wave or sonic boom will go past the control surfaces. And those layers will not work in that case. In other cases, if the shockwave nuzzles against the aircraft body, that causes overheating. The next problem is the engine.  The Scramjet engine is the only engine type that can use atmospheric air and create hypersonic exhaust gas....

New algorithms and other innovative tools are advancing medical production.

"Researchers at the University of Pittsburgh have developed a portable lab-on-a-chip device that uses blood to generate electricity, enabling on-the-spot diagnosis. This technology, which measures blood electrical conductivity, can assess health parameters and may transform healthcare by facilitating real-time, non-invasive testing." (ScitechDaily, Powered by Blood: Innovative Chip Provides Real-Time Health Monitoring) Innovations like microchips that get their energy from blood can observe how the body reacts to medicals. Those microchips can also make it possible for the systems can make point diagnoses very fast. And those microchips can find things like tumors before they grow. The same technology that gives electricity to the lab-on-chip, can give electricity to the systems that control nanomachines and the microchipped immune cells.  Maybe quite soon we see the microchips that can flow in blood veins, and those chips can involve nano-size X-ray films for precise X-ray i...

The MIT researchers debunked the MRI that can read the mind.

"MIT researchers have determined that the DIANA MRI method, initially claimed to detect direct neural activity, actually produces signals from its imaging process, not from brain activity. Experiments showed that these signals were artifacts of the imaging system’s setup, challenging the method’s efficacy and raising concerns about its reliability in neuroscientific research. Credit: SciTechDaily.com" (ScitechDaily, DIANA Debunked by MIT: The MRI That Couldn’t Read Minds) Brains are very complex things. Theoretically, it is possible to create a magnetic resonance imaging (MRI) that can read the human mind. However, the practical solution is a very hard thing to create and the reason for that is this. There are many details in the human brain, that the MRI must see. When the brain collects images from memories it activates certain neuron groups. It collects those memories from different individual neurons like the brain collects images from the retina. Every image that is in o...

The universe in laboratories: how plasma balls can help researchers understand what is the nature of the universe.

"How It Works: A proton (far left) from the Super Proton Synchrotron (SPS) accelerator at CERN impinges on carbon nuclei (small gray spheres). This produces a shower of various elementary particles, including a large number of neutral pions (orange spheres). As the unstable neutral pions decay, they emit two high-energy gamma rays (yellow squiggly arrows). " (ScitechDaily, Mini-Universe in a Lab: Creating “Cosmic Fireballs” on Earth) These gamma rays then interact with the electric field of Tantalum nuclei (large gray spheres), generating electron and positron pairs and resulting in the novel electron-positron fireball plasma. Because of these cascade effects, a single proton can generate many electrons and positrons, making this process of pair plasma production extremely efficient. Credit: University of Rochester Laboratory for Laser Energetics illustration / Heather Palmer" (ScitechDaily, Mini-Universe in a Lab: Creating “Cosmic Fireballs” on Earth) The universe is fu...

The "information engine" harnesses invisible energy from the unusual molecule bonds.

"Recent technological advancements have allowed Simon Fraser University SFU Physics professors John Bechhoefer and David Sivak to create an operational information engine, exploring its potential to harness unused molecular energy. (ScitechDaily, Tapping Into Nature’s Invisible Energy Source: Scientists Push an Information Engine to Its Limits) "Their research, supported by the Foundational Questions Institute, has not only provided insights into improving energy efficiency but also expanded our understanding of biological motors. The team’s findings, which highlight the possibility of converting molecular motion into usable work, could revolutionize energy utilization and engine design. (Artist’s concept). Credit: SciTechDaily.com" (ScitechDaily, Tapping Into Nature’s Invisible Energy Source: Scientists Push an Information Engine to Its Limits) This is writing about previously theoretical engine systems. That is becoming possible because researchers made a prototype of ...

AI uses human uncertainty to predict people's behavior.

Mathematicians can use Botlzmann's formulas to create a model of how to predict human behavior.  The reason why we cannot predict human behavior completely is that we don't have enough data from that person's life. The idea is that similar people with similar backgrounds behave in similar ways. To make the needed data matrix the researchers need complete, and confirmed data about the person's genotypes and social background.  When we want to predict human behavior, we must determine what behavior we want to predict. Do we want to predict physical things, like where the person moves their hand? Or do we want to predict things, like how a person behaves in the voting situation? So, do we want to predict mental or physical things?   When the AI wants to predict things like where the boxer punches next time, the AI must know data, if a boxer is left or right-handed. Then the system can use statistics to predict, which side the punches come from. And the AI can see things...

New and innovative robot suit for moving people.

"In testing with human subjects, the researchers found that study participants used 24.3% less metabolic energy when walking in the robotic exoskeleton than without the exoskeleton. Participants used 13.1% less energy when running in the exoskeleton, and 15.4% less energy when climbing stairs. Credit: Hao Su, NC State University" (ScitechDaily, AI Magic: Robotic Suits That Help You Run Easier and Faster) New robot suits can decrease energy use very much. And this kind of system is a good help for free time and heavy work. The new robot suit base is in the Human Universal Load Carrier HULC by Lockheed Martin. But the new robot suits are more compact, lightweight, and easy to use. They can operate for a longer time.  The biggest problem with HULC has been its 20-kilometer range. The solar-powered system can use changed batteries that the MULE system or camel can carry. Advanced battery technology allows those systems to be lightweight. Users who use this system can use those ro...