Galaxies hit single, doubles, and triple (growing black holes)

J1027 and J1708: Two of seven triple galaxy mergers that are located between 370 million and one billion light years away from Earth.

Caption: This pair of objects comes from a study of seven triple galaxy mergers. By using Chandra and other telescopes, astronomers determined what happened to the supermassive black holes at thecenters of the galaxies after the collision of three galaxies. The results show a range of outcomes: a single growing supermassive black hole, four doubles, a triple, and one system where no black holes are rapidly pulling in matter. Two of the doubles are shown here in X-rays (Chandra) and optical light (SDSS and Hubble). This information tells astronomers more about how galaxies and the giant black holes in their centers grow over cosmic time...
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Scientists identify Nutrient that helps Prevent Bacterial Infection

Colorized scanning electron micrograph showing carbapenem-resistant Klebsiella pneumoniae interacting with a human neutrophil
Colorized scanning electron micrograph showing carbapenem-resistant Klebsiella pneumoniae interacting with a human neutrophil
Credit: NIAID

Taurine, which helps the body digest fats and oils, could offer treatment benefit. Scientists studying the body’s natural defenses against bacterial infection have identified a nutrient — taurine — that helps the gut recall prior infections and kill invading bacteria, such as Klebsiella pneumoniae (Kpn). The finding, published in the journal Cell by scientists from five institutes of the National Institutes of Health, could aid efforts seeking alternatives to antibiotics.

Scientists know that microbiota — the trillions of beneficial microbes living harmoniously inside our gut — can protect people from bacterial infections, but little is known abo...

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Eliminating Microplastics in Wastewater directly at the Source

A research team from INRS has developed a process for the electrolytic treatment of wastewater that degrades microplastics at the source. Wastewater can carry high concentrations of microplastics into the environment. These small particles of less than 5 mm can come from our clothes, usually as microfibers. Professor Patrick Drogui, who led the study, points out there are currently no established degradation methods to handle this contaminant during wastewater treatment. Some techniques already exist, but they often involve physical separation as a means of filtering pollutants. These technologies do not degrade them, which requires additional work to manage the separated particles.

Therefore, the research team decided to degrade the particles by electrolytic oxidation, a process n...

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Concept for a Hybrid-Electric Plane may Reduce Aviation’s Air Pollution problem

Caption:A proposed hybrid-electric plane could “eliminate aviation’s air pollution problem,” say MIT engineers.

Proposed design could reduce nitrogen oxide emissions by 95 percent, a new study finds. At cruising altitude, airplanes emit a steady stream of nitrogen oxides into the atmosphere, where the chemicals can linger to produce ozone and fine particulates. Nitrogen oxides, or NOx, are a major source of air pollution and have been associated with asthma, respiratory disease, and cardiovascular disorders. Previous research has shown that the generation of these chemicals due to global aviation results in 16,000 premature deaths each year.

Now MIT engineers have come up with a concept for airplane propulsion that they estimate would eliminate 95 percent of aviation’s NOx emi...

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