University of Toronto researchers have designed a chemical screening tool that will light up when dangerous pathogens and diseases in air, water and bodily fluids are present.
"This detection technique, which uses DNA to seek out target DNA, could one day be used in clinical care situations to quickly detect diseases such as AIDS and hepatitis," says Professor Ulrich Krull, the AstraZeneca Chair in biotechnology and vice-principal (research) at the University of Toronto at Mississauga. "It could also act to constantly monitor the environment and sound an alarm if harmful agents were to appear."
In a study, outlined in the March issue of Bioorganic & Medicinal Chemistry Letters, Krull and graduate student Xiaofeng Wang used a fluorescent dye attached to probe DNA that binds to specific target DNA sequences, illuminates in the presence of a targeted pathogen or genetic mutation and then sends a detection signal through an optical fibre. By simply adding heat, the dye unbinds and the detection chemistry is ready to test the next sample. The chemical screening system fits onto a microchip and soon could test blood and water samples in a matter of seconds.
Karen Kelly | EurekAlert!
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At the Hannover Messe 2018, the Bundesanstalt für Materialforschung und-prüfung (BAM) will show how, in the future, astronauts could produce their own tools or spare parts in zero gravity using 3D printing. This will reduce, weight and transport costs for space missions. Visitors can experience the innovative additive manufacturing process live at the fair.
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Physicists at the Laboratory for Attosecond Physics, which is jointly run by Ludwig-Maximilians-Universität and the Max Planck Institute of Quantum Optics, have developed a high-power laser system that generates ultrashort pulses of light covering a large share of the mid-infrared spectrum. The researchers envisage a wide range of applications for the technology – in the early diagnosis of cancer, for instance.
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University of Connecticut researchers have created a biodegradable composite made of silk fibers that can be used to repair broken load-bearing bones without the complications sometimes presented by other materials.
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Study published in the journal ACS Applied Materials & Interfaces is the outcome of an international effort that included teams from Dresden and Berlin in Germany, and the US.
Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia...
Novel highly efficient and brilliant gamma-ray source: Based on model calculations, physicists of the Max PIanck Institute for Nuclear Physics in Heidelberg propose a novel method for an efficient high-brilliance gamma-ray source. A giant collimated gamma-ray pulse is generated from the interaction of a dense ultra-relativistic electron beam with a thin solid conductor. Energetic gamma-rays are copiously produced as the electron beam splits into filaments while propagating across the conductor. The resulting gamma-ray energy and flux enable novel experiments in nuclear and fundamental physics.
The typical wavelength of light interacting with an object of the microcosm scales with the size of this object. For atoms, this ranges from visible light to...
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