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    Astronomers discover how lowly Dwarf Galaxy becomes Star-Forming Powerhouse

    September 10, 2015, Categories  Astronomy/Space

    ALMA discovers an unexpected population of compact interstellar clouds inside the dwarf irregular galaxy WLM. These star-forming clouds provide the necessary nurturing environment to form star clusters. As seen in relation to an optical image of the galaxy taken with the Blanco 4-meter telescope, (box upper left) an overlaying blanket of hydrogen gas (red) imaged with NRAO's VLA telescope provides the pressure necessary to concentrate molecules of carbon monoxide (yellow) as seen with ALMA. These regions correspond to dense cores capable of forming clusters like those found in the Milky Way and other large galaxies. Credit: B. Saxton (NRAO/AUI/NSF); M. Rubio et al., Universidad de Chile, ALMA (NRAO/ESO/NAOJ); D. Hunter and A. Schruba, VLA (NRAO/AUI/NSF); P. Massey/Lowell Observatory and K. Olsen (NOAO/AURA/NSF)

    ALMA discovers an unexpected population of compact interstellar clouds inside the dwarf irregular galaxy WLM. These star-forming clouds provide the necessary nurturing environment to form star clusters. As seen in relation to an optical image of the galaxy taken with the Blanco 4-meter telescope, (box upper left) an overlaying blanket of hydrogen gas (red) imaged with NRAO’s VLA telescope provides the pressure necessary to concentrate molecules of carbon monoxide (yellow) as seen with ALMA. These regions correspond to dense cores capable of forming clusters like those found in the Milky Way and other large galaxies. Credit: B. Saxton (NRAO/AUI/NSF); M. Rubio et al., Universidad de Chile, ALMA (NRAO/ESO/NAOJ); D. Hunter and A. Schruba, VLA (NRAO/AUI/NSF); P. Massey/Lowell Observatory and K...

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    Soaking up CO2 and turning it into Valuable Products

    August 28, 2015, Categories  Chemistry/Nanotechnology, Environment/Geology, Physics, Technology/Electronics

    Conceptual model shows how porphyrin COFs embedded in a cathode could be used to split carbon dioxide (CO2) into carbon monoxide (CO) and oxygen for making renewable fuels and other valuable chemical products. Credit: Courtesy of Omar Yaghi, Berkeley Lab/UC Berkeley

    Conceptual model shows how porphyrin COFs embedded in a cathode could be used to split carbon dioxide (CO2) into carbon monoxide (CO) and oxygen for making renewable fuels and other valuable chemical products. Credit: Courtesy of Omar Yaghi, Berkeley Lab/UC Berkeley

    Porphyrin CO2 catalysts have been incorporated into the sponge-like crystals of covalent organic frameworks (COFs) to create a molecular system that not only absorbs carbon dioxide, but also selectively reduces it to CO, a primary building block for a wide range of chemical products including fuels, pharmaceuticals and plastics.

    With the reduction of atmospheric CO2 emissions in mind, Yaghi and his MIU group designed and developed the first COFs as a means of separating CO2 from flue gases...

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