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Engineers make Injectable Tissues a Reality

Doctoral student Mohamed Gamal uses a newly developed cell encapsulation device.
Credit: Nathan Skolski, UBC Okanagan

New device encases delicate cells into protective microgels. A simple injection that can help regrow damaged tissue has long been the dream of physicians and patients alike. A new study from researchers at UBC Okanagan moves that dream closer to reality with a device that makes encapsulating cells much faster, cheaper and more effective.

“The idea of injecting different kinds of tissue cells is not a new one,” says Keekyoung Kim, assistant professor of engineering at UBC Okanagan and study co-author. “It’s an enticing concept because by introducing cells into damaged tissue, we can supercharge the body’s own processes to regrow and repair an injury.”

Kim says eve...

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New Automated Biological-sample Analysis systems to Accelerate Disease Detection

Illustration of the mathematical transforms used, first on the image of a chessboard, then on microfluidic multipoles.
Credit: Polytechnique Montréal and McGill University

Professor Thomas Gervais of Polytechnique Montréal and his students Pierre-Alexandre Goyette and Étienne Boulais, in partnership with the team led by Professor David Juncker of McGill University, have developed a new microfluidic process aimed at automating protein detection by antibodies. This work, the topic of an article in Nature Communications, points to the arrival of new portable instruments to accelerate the screening process and molecule analysis in biological laboratories to accelerate research in cancer biology.

Microfluidics refers to the manipulation of fluids in microscale devices...

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Thermodynamic Magic enables Cooling Without Energy Consumption

Theoretically, this experimental device could turn boiling water to ice, without using any energy.
Credit: Andreas Schilling, UZH

Physicists at the University of Zurich have developed an amazingly simple device that allows heat to flow temporarily from a cold to a warm object without an external power supply. Intriguingly, the process initially appears to contradict the fundamental laws of physics.

If you put a teapot of boiling water on the kitchen table, it will gradually cool down. However, its temperature is not expected to fall below that of the table. It is precisely this everyday experience that illustrates one of the fundamental laws of physics – the second law of thermodynamics – which states that the entropy of a closed natural system must increase over time...

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Saturn’s Rings Coat Tiny Moons

This graphic shows the ring moons inspected by NASA’s Cassini spacecraft in super-close flybys. The rings and moons depicted are not to scale.
Credit: NASA-JPL/Caltech

New findings have emerged about five tiny moons nestled in and near Saturn’s rings. The closest-ever flybys by NASA’s Cassini spacecraft reveal that the surfaces of these unusual moons are covered with material from the planet’s rings – and from icy particles blasting out of Saturn’s larger moon Enceladus. The work paints a picture of the competing processes shaping these mini-moons.

“The daring, close flybys of these odd little moons let us peer into how they interact with Saturn’s rings,” said Bonnie Buratti of NASA’s Jet Propulsion Laboratory in Pasadena, California...

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