RESUMEN
Introduction: It is well documented that librarian involvement in systematic reviews generally increases quality of reporting and the review overall. We used bibliometric analysis methods to analyze the level of librarian involvement in systematic reviews conducted at the University of Alberta (U of A). Methods: Using Web of Science (WoS), we searched for systematic reviews completed in the years 2016-2020 with a U of A co-author. Systematic reviews identified through WoS were screened in two phases: (i) exclusion of duplicates, protocols, other types of reviews, and systematic review methodology literature to leave true systematic review publications, and (ii) screening for level of librarian involvement (acknowledgement, co-author, or no involvement). Results: 640 reviews were analyzed for the following categories: (i) librarian named as a coauthor; (ii) librarian named in the acknowledgements section; (iii) librarian mentioned in the body of the manuscript; (iv) no librarian involvement. We identified 152 reviews who named a librarian as a co-author on the paper, 125 reviews named a librarian in the acknowledgements section, and 67 reviews mentioned a librarian in the body of the review without naming them as a co-author or in an acknowledgement. WoS Research Areas were used to identify disciplines that used librarian support and those that did not. A keyword network analysis revealed research areas that were very active in producing systematic reviews, while also providing information on the areas publishing systematic reviews without librarian support. Conclusion: There is a great deal of variation in how the work of librarians is reflected in systematic reviews. This was particularly apparent in reviews where a librarian was mentioned in the body of the review but they were not named as an author or formally acknowledged. Continuing to educate researchers about the work of librarians is crucial to fully represent the value librarians bring to systematic reviews. Bibliometric analysis provides useful insights on service gaps for specific disciplines or research areas that are currently not using librarian support in systematic review publications, which can help inform service planning.
RESUMEN
The presence and distribution of preserved organic matter on the surface of Mars can provide key information about the Martian carbon cycle and the potential of the planet to host life throughout its history. Several types of organic molecules have been previously detected in Martian meteorites1 and at Gale crater, Mars2-4. Evaluating the diversity and detectability of organic matter elsewhere on Mars is important for understanding the extent and diversity of Martian surface processes and the potential availability of carbon sources1,5,6. Here we report the detection of Raman and fluorescence spectra consistent with several species of aromatic organic molecules in the Máaz and Séítah formations within the Crater Floor sequences of Jezero crater, Mars. We report specific fluorescence-mineral associations consistent with many classes of organic molecules occurring in different spatial patterns within these compositionally distinct formations, potentially indicating different fates of carbon across environments. Our findings suggest there may be a diversity of aromatic molecules prevalent on the Martian surface, and these materials persist despite exposure to surface conditions. These potential organic molecules are largely found within minerals linked to aqueous processes, indicating that these processes may have had a key role in organic synthesis, transport or preservation.
RESUMEN
The Perseverance rover landed in Jezero crater, Mars, in February 2021. We used the Scanning Habitable Environments with Raman and Luminescence for Organics and Chemicals (SHERLOC) instrument to perform deep-ultraviolet Raman and fluorescence spectroscopy of three rocks within the crater. We identify evidence for two distinct ancient aqueous environments at different times. Reactions with liquid water formed carbonates in an olivine-rich igneous rock. A sulfate-perchlorate mixture is present in the rocks, which probably formed by later modifications of the rocks by brine. Fluorescence signatures consistent with aromatic organic compounds occur throughout these rocks and are preserved in minerals related to both aqueous environments.
RESUMEN
New impact craters at five sites in the martian mid-latitudes excavated material from depths of decimeters that has a brightness and color indicative of water ice. Near-infrared spectra of the largest example confirm this composition, and repeated imaging showed fading over several months, as expected for sublimating ice. Thermal models of one site show that millimeters of sublimation occurred during this fading period, indicating clean ice rather than ice in soil pores. Our derived ice-table depths are consistent with models using higher long-term average atmospheric water vapor content than present values. Craters at most of these sites may have excavated completely through this clean ice, probing the ice table to previously unsampled depths of meters and revealing substantial heterogeneity in the vertical distribution of the ice itself.
