More Like this

1. Bridging the Gap: Capturing the Ly α Counterpart of a Type-II Spicule and Its Heating Evolution with VAULT2.0 and IRIS Observations

   https://doi.org/10.3847/1538-4357/aab607  

   Chintzoglou, Georgios ; De Pontieu, Bart ; Martínez-Sykora, Juan ; Pereira, Tiago M. ; Vourlidas, Angelos ; Beltran, Samuel Tun ( April 2018 , The Astrophysical Journal)
2. Hard versus soft: zero-field dinuclear Dy( iii ) oxygen bridged SMM and theoretical predictions of the sulfur and selenium analogues

   https://doi.org/10.1039/c9dt00324j  

   Vignesh, Kuduva R. ; Alexandropoulos, Dimitris I. ; Dolinar, Brian S. ; Dunbar, Kim R. ( February 2019 , Dalton Transactions)

   Two dinuclear lanthanide complexes (Gd and Dy) were prepared and characterized by X-ray, magnetic and computational methods. The Dy analogue shows SMM behavior with an energy barrier of 98.4 K in the absence of an applied dc field. Theoretical calculations were performed on model complexes which support the hypothesis that the energy barrier will increase if the soft-donor atoms S and Se are used in lieu of an O donor. 

   more » « less
3. The Effects of Low Oxygen Activity Conditions on the Phase Equilibria and Cation Occupancy of Strontium Barium Niobate: Changes to SBN Under Low P O 2

   https://doi.org/10.1111/jace.14351  

   Bock, Jonathan A. ; Chan, Jason H. ; Tsur, Yoed ; Trolier-McKinstry, Susan ; Randall, Clive A. ; Raveau, B. ( October 2016 , Journal of the American Ceramic Society)
4. Copper carbene complexes. Synthesis and structural analysis of a chloro-bridged dicopper cation and the triosmium-copper carbene cluster complex HOs3(CO)11[µ-Cu(IPr)]

   https://doi.org/10.1016/j.jorganchem.2021.121799  

   Adams, Richard D. ; Smith, Mark D. ; Tedder, Jonathan D. ; Wakdikar, Nutan D. ( June 2021 , Journal of Organometallic Chemistry)
5. Metabolic versatility of the nitrite-oxidizing bacterium Nitrospira marina and its proteomic response to oxygen-limited conditions

   https://doi.org/10.1038/s41396-020-00828-3  

   Bayer, Barbara ; Saito, Mak A. ; McIlvin, Matthew R. ; Lücker, Sebastian ; Moran, Dawn M. ; Lankiewicz, Thomas S. ; Dupont, Christopher L. ; Santoro, Alyson E. ( November 2020 , The ISME Journal)

   The genus Nitrospira is the most widespread group of nitrite-oxidizing bacteria and thrives in diverse natural and engineered ecosystems. Nitrospira marina Nb-295T was isolated from the ocean over 30 years ago; however, its genome has not yet been analyzed. Here, we investigated the metabolic potential of N. marina based on its complete genome sequence and performed physiological experiments to test genome-derived hypotheses. Our data confirm that N. marina benefits from additions of undefined organic carbon substrates, has adaptations to resist oxidative, osmotic, and UV light-induced stress and low dissolved pCO2, and requires exogenous vitamin B12. In addition, N. marina is able to grow chemoorganotrophically on formate, and is thus not an obligate chemolithoautotroph. We further investigated the proteomic response of N. marina to low (∼5.6 µM) O2 concentrations. The abundance of a potentially more efficient CO2-fixing pyruvate:ferredoxin oxidoreductase (POR) complex and a high-affinity cbb3-type terminal oxidase increased under O2 limitation, suggesting a role in sustaining nitrite oxidation-driven autotrophy. This putatively more O2-sensitive POR complex might be protected from oxidative damage by Cu/Zn-binding superoxide dismutase, which also increased in abundance under low O2 conditions. Furthermore, the upregulation of proteins involved in alternative energy metabolisms, including Group 3b [NiFe] hydrogenase and formate dehydrogenase, indicate a high metabolic versatility to survive conditions unfavorable for aerobic nitrite oxidation. In summary, the genome and proteome of the first marine Nitrospira isolate identifies adaptations to life in the oxic ocean and provides insights into the metabolic diversity and niche differentiation of NOB in marine environments.

    

   more » « less