Simulations characterize turbulence caused by common connection for dialysis

The complex interplay among the arteriovenous grafts, the vessels they connect, and the blood they transport has been difficult to simulate, but one new method provides a way. Researchers report simulations that reconstructed the fluid dynamics affected by the insertion of an AVG. They used a model that considered the ability of AVG tubes and blood vessels to deform and found much of the disrupted flow could be mitigated by this flexibility.

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An artificial skin that can help rehabilitation and enhance virtual reality

Scientists have developed a soft artificial skin that provides haptic feedback and — thanks to a sophisticated self-sensing mechanism — has the potential to instantaneously adapt to a wearer's movements. Applications for the new technology range from medical rehabilitation to virtual reality.

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Hurricanes: Improving rapid intensification predictions

Many scientists have said that storms are more intense than ever before – Cat. 4 or 5 storms used to be outliers, but today, it seems they are becoming the norm. Why? That's the question a research team is working to answer – they are looking what contributes to the rapid intensification of storms.

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Machine learning finds new metamaterial designs for energy harvesting

Electrical engineers have harnessed the power of machine learning to design dielectric (non-metal) metamaterials that absorb and emit specific frequencies of terahertz radiation. The technique drops the time needed to simulate possible configurations from more than 2,000 years to 23 hours, which should facilitate the design of sustainable types of thermal energy harvesters and lighting.

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Bird droppings defy expectations

Prevailing wisdom ranks uric acid as the primary ingredient in bird excrement which is comprised mostly of urine. (Birds release both solid and liquid waste at the same time. The white substance is the urine). But according to new research, uric acid can't be the answer. That's because there is no uric acid in excreted bird urine.

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New technique to improve ductility of ceramic materials for missiles, engines

Researchers have developed a new process to help overcome the brittle nature of ceramics and make it more ductile and durable. The team calls the process 'flash sintering,' which adds an electric field to the conventional sintering process used to form bulk components from ceramics.

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When it comes to robots, reliability may matter more than reasoning

What does it take for a human to trust a robot? That is what researchers are uncovering in a new study into how humans and robots work together. Research into human-agent teaming, or HAT, has examined how the transparency of agents — such as robots, unmanned vehicles or software agents — influences human trust, task performance, workload and perceptions of the agent.

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