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Categories: Archaeology: General, Energy: Alternative Fuels
Published Do wind instruments disperse COVID aerosol droplets?
(via sciencedaily.com) Orchestral ensembles have faced many challenges when starting to perform again during the COVID pandemic, and contamination is a chief concern: specifically, whether wind instruments are vectors of contamination through aerosol dispersion. Researchers worked with musicians to deepen our understanding of how much aerosol is produced and dispersed by wind instruments. They used visualization to characterize the flow, tracked fog particles in the air, and measured aerosol concentration from wind instruments with a particle counter. Then they combined these to develop an equation to describe aerosol dispersion.
Published New faster charging hydrogen fuel cell developed
(via sciencedaily.com) A new design for solid-state hydrogen storage could significantly reduce charging times.
Published A new method boosts wind farms' energy output, without new equipment
(via sciencedaily.com) Engineers have developed a method to increase wind farms' energy output. Whereas individual turbines are typically controlled separately, the new approach models the wind flow of the entire collection of turbines and optimizes the control of individual units.
Published Tweaking turbine angles squeezes more power out of wind farms
(via sciencedaily.com) New algorithm forces turbines in wind farms to be team players, boosting energy output overall.
Published Local renewable energy employment can fully replace U.S. coal jobs nationwide, study finds
(via sciencedaily.com) Across the United States, local wind and solar jobs can fully replace the coal-plant jobs that will be lost as the nation's power-generation system moves away from fossil fuels in the coming decades, according to a new study.
Published Evidence that giant meteorite impacts created the continents
(via sciencedaily.com) Original source New research has provided the strongest evidence yet that Earth's continents were formed by giant meteorite impacts that were particularly prevalent during the first billion years or so of our planet's four-and-a-half-billion year history.
Published Understanding how rechargeable aqueous zinc batteries work
(via sciencedaily.com) While scientists have hoped that rechargeable zinc-manganese dioxide batteries could be developed into a viable alternative for grid storage applications, engineers have now identified the atomistic mechanism of charge and discharge in such batteries.
Published New wind sensor uses smart materials to improve drone performance
(via sciencedaily.com) Engineers have designed and successfully tested a more efficient wind sensor for use on drones, balloons and other autonomous aircraft.
Published Octopus lures from the Mariana Islands found to be oldest in the world
(via sciencedaily.com) An archaeological study has determined that cowrie-shell artifacts found throughout the Mariana Islands were lures used for hunting octopuses and that the devices, similar versions of which have been found on islands across the Pacific, are the oldest known artifacts of their kind in the world.
Published Oldest DNA from domesticated American horse lends credence to shipwreck folklore
(via sciencedaily.com) Feral horses have roamed freely across the island of Assateague off the coast of Maryland and Virginia for hundreds of years, but exactly how they got there has remained a mystery. In a new study, ancient DNA extracted from a 16th century cow tooth from one of Spain's first Caribbean colonies turns out to be from a horse. Analysis of the DNA suggest that old folk tales claiming that horses were marooned on Assateague following the shipwreck of a Spanish galleon are likely more fact than fiction.
Published Ancient DNA clarifies the early history of American colonial horses
(via sciencedaily.com) A newly identified 16th century horse specimen is among the oldest domestic horses from the Americas known to date, and its DNA helps clarify the history of horses in the Western Hemisphere, according to a new study.
Published High-status Danish Vikings wore exotic beaver furs
(via sciencedaily.com) Beaver fur was a symbol of wealth and an important trade item in 10th Century Denmark, according to a new study.
Published Floors in ancient Greek luxury villa were laid with recycled glass
(via sciencedaily.com) Original source Several 1700 years old decorative mosaic floors have been excavated in a luxury villa located in present-day Turkey, once overlooking the Mediterranean Sea. New chemical analyzes reveal that recycled glass was used in laying the mosaic floors.
Published Just 10 financial actors hold the key to climate change
(via sciencedaily.com) A new report has identified the 10 financial actors with the most influence on the fossil fuel economy and outlines the decisive role they can play in helping de-carbonize our future.
Published All-in-one solar-powered tower makes carbon-neutral jet fuel
(via sciencedaily.com) Researchers have designed a fuel production system that uses water, carbon dioxide (CO2), and sunlight to produce aviation fuel. They have implemented the system in the field, and the design could help the aviation industry become carbon neutral.
Published Ultrasonic detectors reveal the detrimental effect of wind turbines at forest sites on bats
(via sciencedaily.com) As more and more wind turbines (WTs) are installed in the course of the energy transition and distance regulations to human settlements are tightened, suitable locations are becoming increasingly difficult to find. As a result, wind turbines are increasingly being erected in forests -- to the detriment of forest specialists among bats.
Published In search of the lost city of Natounia
(via sciencedaily.com) The mountain fortress of Rabana-Merquly in modern Iraqi Kurdistan was one of the major regional centers of the Parthian Empire, which extended over parts of Iran and Mesopotamia approximately 2,000 years ago. The researchers studied the remains of the fortress.
Published Fuel cells: Novel multi-proton carrier complex as efficient proton conductor at high temps
(via sciencedaily.com) Fuel cells often fall short when it comes to operating at temperatures beyond 100 degrees Celsius owing to their dependence on water as a proton conduction medium. To overcome this issue, a team of researchers designed a new hydrogen-bonded starburst-shaped metal complex consisting of ruthenium (III) ion and six imidazole-imidazolate groups. The resulting single molecular crystal shows excellent proton conductivity even at temperatures as high as 180°C and as low as --70 °C.
Published DNA from ancient population in Southern China suggests Native Americans' East Asian roots
(via sciencedaily.com) For the first time, researchers successfully sequenced the genome of ancient human fossils from the Late Pleistocene in southern China. The data suggests that the mysterious hominin belonged to an extinct maternal branch of modern humans that might have contributed to the origin of Native Americans.
Published Rare deep-sea brine pools discovered in Red Sea
(via sciencedaily.com) Researchers recently discovered rare deep-sea brine pools in the Gulf of Aqaba, a northern extension to the Red Sea. These salty underwater lakes hold secrets into the way oceans on Earth formed millions of years ago, and offer clues to life on other planets.