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Sökning: WFRF:(Mertz D) > (2020-2023)

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1.
  • Cruz-Uribe, A. M., et al. (författare)
  • Trace element and isotopic zoning of garnetite veins in amphibolitized eclogite, Franciscan Complex, California, USA
  • 2021
  • Ingår i: Contributions to Mineralogy and Petrology. - : Springer Science and Business Media LLC. - 0010-7999 .- 1432-0967. ; 176:5
  • Tidskriftsartikel (refereegranskat)abstract
    • Here we present major element, trace element, and oxygen isotope data for garnet from an amphibolitized eclogite block from Ring Mountain, Franciscan Complex, California, USA. Garnetite veins 1-5 cm thick are laterally continuous up to 10 m within an Mg-rich blackwall zone of the eclogite block. Complex major and trace element zoning patterns reveal multiple stages of garnet growth in both the matrix and garnetite veins. Similarities in major and trace element zoning between matrix and vein garnet suggest that crystallization of the garnetite veins began toward the end of matrix garnet core growth, and continued throughout the garnet growth history of the rock. Oscillatory zoning in rare-earth elements suggests garnet growth in pulses, with matrix-diffusion-limited growth in between pulses. Oxygen isotope analyses of matrix and vein garnet have a range in delta O-18 values of 5.3-11.1 parts per thousand. Differences in delta O-18 values of up to similar to 4 parts per thousand between garnet core and rim are observed in both the matrix and vein; garnet cores range from 9.8 to 11.1 parts per thousand (median 10.4 parts per thousand), garnet mantles range from 8.3 to 10.0 parts per thousand (median 9.7 parts per thousand), and garnet rims range from 5.8 to 7.8 parts per thousand (median 6.7 parts per thousand). Late-stage vein crystallization appears as a garnet "cement" that fills in a network of small (typically 5-50 mu m) garnet cores, and likely crystallized from an amorphous phase. The low delta O-18 values of this latest stage of garnet growth are consistent with interaction with serpentinites, and likely represent the physical incorporation of the eclogite block into the serpentinite matrix melange.
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2.
  • Sartelli, Massimo, et al. (författare)
  • Ten golden rules for optimal antibiotic use in hospital settings: the WARNING call to action
  • 2023
  • Ingår i: WORLD JOURNAL OF EMERGENCY SURGERY. - 1749-7922. ; 18:1
  • Forskningsöversikt (refereegranskat)abstract
    • Antibiotics are recognized widely for their benefits when used appropriately. However, they are often used inappropriately despite the importance of responsible use within good clinical practice. Effective antibiotic treatment is an essential component of universal healthcare, and it is a global responsibility to ensure appropriate use. Currently, pharmaceutical companies have little incentive to develop new antibiotics due to scientific, regulatory, and financial barriers, further emphasizing the importance of appropriate antibiotic use. To address this issue, the Global Alliance for Infections in Surgery established an international multidisciplinary task force of 295 experts from 115 countries with different backgrounds. The task force developed a position statement called WARNING (Worldwide Antimicrobial Resistance National/International Network Group) aimed at raising awareness of antimicrobial resistance and improving antibiotic prescribing practices worldwide. The statement outlined is 10 axioms, or "golden rules," for the appropriate use of antibiotics that all healthcare workers should consistently adhere in clinical practice.
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