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IMAGE: Comparison of flows in the reverse direction (right to left) at three different speeds. The water current is visualized with green and blue dyes, showing that the flows are increasingly. view more
Credit: NYU s Applied Mathematics Laboratory
A valve invented by engineer Nikola Tesla a century ago is not only more functional than previously realized, but also has other potential applications today, a team of researchers has found after conducting a series of experiments on replications of the early 20th-century design.
Its findings, reported in the journal
Nature Communications, suggest that Tesla s device, which he called a valvular conduit, could harness the vibrations in engines and other machinery to pump fuel, coolants, lubricants, and other gases and liquids.
Workers with blood lead levels below the legal ceiling in Brazil expressed a microRNA associated with a decrease in DNA methylation, a physiological process required for the organism to be in balance. However, known clinical manifestations occur when levels are high.
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IMAGE: Scientists find optimal hydrogen-natural gas blend to trap hydrogen in cage-like molecules more effectively view more
Credit: GIST
2) is heralded as the clean fuel of tomorrow. Because H
2 can be produced from water (H
2O) without generating carbon emissions, developing H
2-compatible technologies has become a top priority. However, the road ahead is bumpy, and many technical limitations must be ironed out. Hydrogen is the smallest molecule in nature, and finding feasible ways to store it is a critical issue to realize a hydrogen economy, states Associate Professor Youngjune Park from the Gwangju Institute of Science and Technology (GIST) in Korea. Unlike hydrocarbons, pure H
Scientists at Skoltech Center for Energy Science and Technology have developed an enriched and scalable approach for increasing the capacity of a broad range of metal-ion battery cathode materials. An important advantage of the approach is its scalability. The process requires no sophisticated conditions and is relatively safe. Additionally, the reducing agents can be recycled after they react with the cathodes because their redox chemistry is reversible. These features make the method promising for large-scale applications.
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To improve our own health and the health of our planet, dietary habits will need to change. Because the composition of an optimal diet changes depending on the combination of location, season, and personalized dietary needs, investigators have built a tool that uses an extensive database of food items, nutrients, and environmental-impacts to develop optimized diets specific to an individual in a given country and month. As described in an article published in the
Journal of Industrial Ecology, the tool breaks new ground: it can be used to develop personalized, healthful, low-impact diets for people around the world.
The researchers used their method to compare what low-impact diets would look like depending on country (Switzerland vs. Spain), season (August vs. February), sex, the inclusion of dietary supplements, and for different diet types and environmental impacts.