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ScienceDaily: Top Technology News |
'Jumping genes' help stabilize DNA folding patterns Posted: 24 Jan 2020 12:51 PM PST The DNA molecule inside the nucleus of any human cell is more than six feet long. To fit into such a small space, it must fold into precise loops that also govern how genes are turned on or off. New research indicates that 'jumping genes' play a surprising role in stabilizing the 3D folding patterns of the DNA molecule inside the cell's nucleus. |
Blue-emitting diode demonstrates limitations and promise of perovskite semiconductors Posted: 24 Jan 2020 12:51 PM PST Halide perovskites have garnered attention because they're highly efficient at capturing energy in solar cells and efficient emitters in diodes. But researchers failed at making perovskite LEDs that emit blue light. Chemists succeeded, but X-ray studies of the LED's structure show that it's very sensitive to temperature, humidity and chemical environment. Hence environmental and chemical control is essential for stable operation. But these properties also allow for potentially broader use, such as sensors. |
Predictive touch response mechanism is a step toward a tactile internet Posted: 23 Jan 2020 12:26 PM PST A team of researchers has developed a method for enhancing haptic feedback experiences in human-to-machine applications that are typical in the Tactile Internet. |
Acetone plus light creates a green jet fuel additive Posted: 23 Jan 2020 12:26 PM PST Take biomass-derived acetone -- common nail polish remover -- use light to upgrade it to higher-mass hydrocarbons, and, voila, you have a domestically generated product that can be blended with conventional jet fuel to fly while providing environmental benefits, creating domestic jobs, securing the nation's global leadership in bioenergy technologies, and improving U.S. energy security. |
Astronomers detect large amounts of oxygen in ancient star's atmosphere Posted: 23 Jan 2020 12:25 PM PST Astronomers have detected large amounts of oxygen in the atmosphere of one of the oldest and most elementally depleted stars known -- a 'primitive star' scientists call J0815+4729. This new finding provides an important clue on how oxygen and other important elements were produced in the first generations of stars in the universe. |
Engineered capillaries model traffic in tiny blood vessels Posted: 23 Jan 2020 12:25 PM PST 3D microvessels have been created to observe how red blood cells transit ultra-small blood vessels. They squeeze single-file through microvessels to bring oxygen and nutrients. Red cells burdened with malaria stall, blocking the blood vessel. The platform is expected to have other uses in studies of how microvascular damage occurs in diabetes and sickle cell anemia. They might be further developed to supply blood circulation to organ repair patches or to 3D printed transplants. |
Platelets instead of spheres make screens more economical Posted: 21 Jan 2020 08:29 AM PST Scientists have further developed QLED technology for screens. They have produced light sources that for the first time emit high-intensity light in only one direction. This reduces scattering losses, which makes the technology extremely energy efficient. |
Plants absorb lead from perovskite solar cells more than expected Posted: 21 Jan 2020 08:29 AM PST Lead from metal-organic perovskite compounds can be absorbed particularly easily by plants. The bioavailability is significantly higher than that of lead from inorganic compounds as found in batteries. |
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