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Categories: Mathematics: Statistics, Physics: Acoustics and Ultrasound

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An artificial intelligence (AI)-based computer algorithm accurately predicted a person's likelihood of suffering heart problems related to clogged arteries based on voice recordings alone.

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Engineers have developed a device that is a first step to enabling noninvasive, ultrasound-based therapies for the brain. For example, ultrasound waves are currently being used in clinical trials to treat epilepsy.

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To accurately diagnose and treat diseases, doctors and researchers need to see inside bodies. Medical imaging tools have come a long way since the humble x-ray, but most existing tools remain too coarse to quantify numbers or specific types of cells inside deep tissues of the body. Quantum dots can do that, according to new research in mice.

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Researchers have developed a new acoustic fabric converts audible sounds into electrical signals. They designed a fabric that works like a microphone, converting sound first into mechanical vibrations, then into electrical signals, similarly to how our ears hear.

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Researchers have developed an algorithm that uses the most quantum bits to date to calculate ground state energy, the lowest-energy state in a quantum mechanical system. The discovery could make it easier to design new materials.

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Scientists review research on gravitational wave detectors as a historical example of quantum technologies and examine the fundamental research on the connection between quantum physics and gravity. The team examined recent gravitational wave experiments, showing it is possible to shield large objects from strong influences from the thermal and seismic environment to allow them to evolve as one quantum object. This decoupling from the environment enables measurement sensitivities that would otherwise be impossible.

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Scientists have now found answers to central questions which had previously stood in the way of acoustic propulsion of nanoparticles.

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A new discovery by physicists could make certain components in computers and smartphones obsolete. The team has succeeded in directly converting frequencies to higher ranges in a common magnetic material without the need for additional components. Frequency multiplication is a fundamental process in modern electronics.

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A quantum ensemble -- a set of quantum states with their corresponding probabilities -- is essential to the encoding of classical information for transmission over quantum channels. But receivers must be able to 'guess' the transmitted quantum state, incurring a cost called 'guesswork.' Recently, researchers have derived analytical solutions of the guesswork problem for when the ensemble is subject to a finite set of conditions. The results constitute a first step towards future algorithms for quantum software.

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Scientists are evaluating machine-learning models using transfer learning principles.

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An ultrasound scan can be used to detect cases of prostate cancer, according to new research.

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A new data analysis tool has revealed the specific immune cell types associated with increased risk of death from COVID-19.

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The world's abalone are threatened, endangered or otherwise vulnerable in nearly every corner of the planet. If only we could wave a magic wand to know when abalone are ready to reproduce, without even touching them. Scientists have now found that wand -- although it isn't magic, and it only looks like a wand. It's an ultrasound transducer, and it can be used to quickly and noninvasively detect when abalone are ready to spawn, they report in a study this week.

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Researchers have developed a computationally efficient method that could be used to identify anomalies in the U.S. power grid in real time. The novel technique augments a special type of machine-learning model with a powerful graph structure, and does not require any labeled data to train.

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Ultrasound scans -- best known for monitoring pregnancies or imaging organs -- can also be used to stimulate cells and direct cell function. A team of researchers has developed an easier, more effective way to harness the technology for biomedical applications.

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Time for a road trip. You punch the destination into your GPS and choose the suggested route. But is this shortest route the safest? Not necessarily, according to new findings.

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Medical researchers have developed a method for producing a low-cost, easy-to-use focused ultrasound device that can help open up the blood-brain barrier for non-invasive procedures and diagnostics.

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A team of researchers from music, chemistry and computer science is using sound to better understand biochemical processes such as the physical mechanisms of protein folding.

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Researchers have devised a revolutionary new technique for measuring the microscopic elasticity of materials. Known as SRAS, the technology works by measuring the speed of sound across the material's surface.

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Despite being among the most researched topics on supercomputers, a fundamental understanding of the effects of turbulent motion on fluid flows still eludes scientists. A new approach aims to change that.