Green sea urchins from the waters off the San Juan Islands in Washington state could help scientists to solve some human reproductive problems. (Photo credit: Christiane Biermann)
For many years scientists have believed they understood how closely related species that occupy the same regions of the ocean were kept from interbreeding. It turns out they were only seeing part of the picture.
New research from the University of Washington’s Friday Harbor Laboratories shows that common assumptions about sea urchin reproduction don’t hold true for all species of the invertebrate creature. The work could lead to better understanding of fertilization among mammals, including the potential to solve some baffling human reproductive problems.
"The importance for people is understanding the process. People come to fertility clinics wondering why their eggs don’t fertilize," said Christiane Biermann, a research associate at Friday Harbor Labs in Washington state’s San Juan Islands and an adjunct biology faculty member at Portland State University in Oregon.
Vince Stricherz | EurekAlert!
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Physicists of the University of Würzburg have made an astonishing discovery in a specific type of topological insulators. The effect is due to the structure of the materials used. The researchers have now published their work in the journal Science.
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In recent years, lasers with ultrashort pulses (USP) down to the femtosecond range have become established on an industrial scale. They could advance some applications with the much-lauded “cold ablation” – if that meant they would then achieve more throughput. A new generation of process engineering that will address this issue in particular will be discussed at the “4th UKP Workshop – Ultrafast Laser Technology” in April 2017.
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In experiments with magnetic atoms conducted at extremely low temperatures, scientists have demonstrated a unique phase of matter: The atoms form a new type of quantum liquid or quantum droplet state. These so called quantum droplets may preserve their form in absence of external confinement because of quantum effects. The joint team of experimental physicists from Innsbruck and theoretical physicists from Hannover report on their findings in the journal Physical Review X.
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