During the hot summer of 2020, confined to his Pasadena home during the COVID-19 pandemic, National Medal of Science-winning applied physicist Amnon Yariv took frequent and long showers to cool off. A surprising result, to go with his record-breaking water bill, was a proposal and theoretical model for a new class of vibrations that can convert a constant force, such as wind or water, to a mechanical oscillation.
Category: biotech/medical – Page 787
Quantum Breakthrough: MRI for Molecules Unlocks Secrets of the Atomic World
A novel quantum sensor with exceptional resolution transforms atomic-level material analysis, paving the way for advancements in quantum technologies and sciences.
In a scientific breakthrough, an international research team from Germany’s Forschungszentrum Jülich and Korea’s IBS Center for Quantum Nanoscience (QNS) developed a quantum sensor capable of detecting minute magnetic fields at the atomic length scale. This pioneering work realizes a long-held dream of scientists: an MRI-like tool for quantum materials.
Quantum Sensor Development
Common Sedative Could Break Consciousness by Tipping Your Brain Into Chaos
A loss of controlled inhibition of overly excited brain cells might explain how a common knock-out anesthesia drug works.
A new animal study led by researchers from the Massachusetts Institute of Technology (MIT) has found that propofol, a sedative used to safely lull people into unconsciousness for medical procedures, disrupts the brain’s normal ability to regain control of highly excitable neurons.
“The brain has to operate on this knife’s edge between excitability and chaos,” explains MIT neuroscientist and senior study author Earl Miller.
In vivo magnetogenetics for cell-type-specific targeting and modulation of brain circuits
Minimally invasive cellular-level target-specific neuromodulation is needed to decipher brain function and neural circuitry. Here nano-magnetogenetics using magnetic force actuating nanoparticles has been reported, enabling wireless and remote stimulation of targeted deep brain neurons in freely behaving animals.
Enhanced Database AIDS Wildfire Managers in Predicting Fires
“There is a tremendous amount of interest in what enables wildfire ignitions and what can be done to prevent them,” said Dr. Erica Fleishman. “This database increases the ability to access relevant information and contribute to wildfire preparedness and prevention.”
Can wildfires be predicted in advance to allow for safeguards that can prevent their spread? This is what a recent study published in Earth System Science Data hopes to address as a team of researchers have developed a database to help firefighters and power companies establish protocol for implementing strategies that holds the potential for helping to reduce the spread of a wildfire before it gets too large.
Wildfire closure sign seen in the Oregon Cascades in September 2020. (Credit: Oregon State University)
For the study, the researchers presented a revised database as part of the Fire Program Analysis Fire-Occurrence Database, which was created by the U.S. Forest Service in 2013 and has had been revised five times since its inception. Before this study, the database contained basic information like wildfire size, ignition source, and discovery date. However, this the researchers for this study have updated the database with social and environmental factors designed to incorporate social vulnerabilities and even distances from the ignition source to the nearest road.
Cancer Drug Shows Promise for Autism Cognitive Function
Summary: A new experimental cancer drug could ease cognitive difficulties for those with Rett syndrome, a rare autism-linked disorder, by enhancing brain cell functions. The drug, ADH-503, improves the activity of microglia, which are crucial for maintaining neural networks.
Researchers found that healthy microglia restored synapse function in brain organoids mimicking Rett syndrome. This breakthrough suggests potential therapies for Rett syndrome and other neurological conditions.
Longevity: How extreme exercise may prolong life span
In this episode of In Conversation, we turn the focus to all things extreme exercise and longevity. Based on the findings of a recent study, which found that a select group of elite runners could live around five years longer on average than the general population, Medical News Today editors Maria Cohut and Yasemin Nicola Sakay discuss the probable biological mechanisms behind how more extreme forms of exercise, such as 4-minute mile running, affect longevity with an expert in cardiology.
Joining the conversation is Michael Papadakis, president of the European Association of Preventive Cardiology (EAPC), professor of cardiology at St George’s, University of London, honorary consultant cardiologist at St George’s University Hospitals National Health Service Foundation Trust, and consultant cardiologist at Cleveland Clinic London in the United Kingdom.
Papadakis shares easy-to-follow advice on how to incorporate more physical activity into our daily lives while discussing the potential health risks and benefits of running and similar forms of professional athletic performance.
A quantum sensor for atomic-scale electric and magnetic fields (w/video)
In a scientific breakthrough, an international research team from Germany’s Forschungszentrum Jülich and Korea’s IBS Center for Quantum Nanoscience (QNS) developed a quantum sensor capable of detecting minute magnetic fields at the atomic length scale. This pioneering work realizes a long-held dream of scientists: an MRI-like tool for quantum materials.
The research team utilized the expertise of bottom up single-molecule fabrication from the Jülich group while conducting experiments at QNS, utilizing the Korean team’s leading-edge instrumentation and methodological know how, to develop the world’s first quantum sensor for the atomic world.
The diameter of an atom is a million times smaller than the thickest human hair. This makes it extremely challenging to visualize and precisely measure physical quantities like electric and magnetic fields emerging from atoms. To sense such weak fields from a single atom, the observing tool must be highly sensitive and as small as the atoms themselves.