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An Analysis of Duplicate Presentations at the 2014 Through 2016 AOSSM and AANA Annual Meetings.

ABSTRACT: Previous studies have shown a high incidence of duplicate presentations at research conferences within different medical disciplines.To determine the rate and analyze characteristics of duplicate presentations at the American Orthopaedic Society for Sports Medicine (AOSSM) and Arthroscopy Association of North America (AANA) Annual Meetings.Cross-sectional study.Meeting programs for the 2014 to 2016 AOSSM and AANA Annual Meetings were searched. All podium presentation abstracts from each AOSSM meeting were cross-referenced with podium presentation abstracts from AANA meetings from all 3 years of the study period to locate all duplicate presentations. Duplicate presentations were then analyzed for changes in abstract title, author order, and addition or removal of authors.A total of 192 and 213 abstracts were accepted for podium presentations at the AOSSM and AANA Annual Meetings, respectively, during the study period. This included 65 presentations at the 2014 AOSSM Annual Meeting, 72 in 2015, and 55 in 2016. Overall, 28 AOSSM presentations (15%) were also presented at an AANA Annual Meeting, including 9 (14%) from the 2014 AOSSM meeting, 15 (21%) from the 2015 meeting, and 4 (7%) from the 2016 meeting. Of the 28 duplicate presentations, authors often altered their abstracts in several ways, including changing the abstract title (14; 50%), changing the author order (17; 61%), and adding or removing authors (10; 36%). Duplication rates were not significantly different between the years (P = .10).A moderate proportion of abstracts presented at the AOSSM and AANA Annual Meetings are duplicates. Meeting committees may want to consider stricter guidelines to ensure only original work is presented at these meetings.

SUBMITTER: Kraeutler MJ

PROVIDER: S-EPMC5521345 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

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Project description:Biogas plants (BGPs) produce methane and carbon dioxide through the anaerobic digestion of agricultural waste. Identification of strategies for more stable biogas plant operation and increased biogas yields require better knowledge about the individual degradation steps and the interactions within the microbial communities. The metaprotein profiles of ten agricultural BGPs and one laboratory reactor were investigated using a metaproteomics pipeline. Fractionation of samples using SDS-PAGE was combined with a high resolution Orbitrap mass spectrometer, metagenome sequences specific for BGPs, and the MetaProteomeAnalyzer software. This enabled us to achieve a high coverage of the metaproteome of the BGP microbial communities. The investigation revealed approx. 17,000 protein groups (metaproteins), covering the majority of the expected metabolic networks of the biogas process such as hydrolysis, transport, fermentation processes, amino acid metabolism, methanogenesis and bacterial C1-metabolism. Biological functions could be linked with the taxonomic composition. Two different types of BGPs were classified by the abundance of the acetoclastic methanogenesis and by abundance of enzymes implicating syntrophic acetate oxidation. Linking of the identified metaproteins with the process steps of the Anaerobic Digestion Model 1 proved the main model assumptions but indicated also some improvements such as considering syntrophic acetate oxidation. Beside the syntrophic interactions, the microbial communities in BGPs are also shaped by competition for substrates and host-phage interactions causing cell lysis. In particular, larger amounts of Bacteriophages for the bacterial families Bacillaceae, Enterobacteriaceae and Clostridiaceae, exceeding the cell number of the Bacteria by approximately four-fold. In contrast, less Bacteriophages were found for Archaea, but more CRISPR proteins were detected. On the one hand, the virus induced turnover of biomass might cause slow degradation of complex biomass in BGP. On the other hand, the lysis of bacterial cells allows cycling of essential nutrients.

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An Analysis of Duplicate Presentations at the 2014 Through 2016 AOSSM and AANA Annual Meetings.

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