87,199 research outputs found

    Exploring the Interaction Between Landslides and Carbon Stocks in Italy

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    Landslides, as natural hazards, have far-reaching impacts beyond their immediate effects on human lives and infrastructure; landslides disrupt both carbon storage and ecosystem stability, and their role in the global carbon cycle cannot be underestimated. This study delves into the complex relationship between landslides and carbon stocks such as, in particular, soil organic carbon (SOC) and above-ground biomass (AGB), and outlines the spatial relationship between different types of landslides, soil organic carbon (SOC), and the carbon cycle, underscoring the importance of understanding these interconnections for environmental sustainability and climate change mitigation efforts. By employing machine learning algorithms on the Google Earth Engine platform, landslide susceptibility maps were created for different landslide types across Italy, and their spatial patterns with SOC accumulation were analyzed using the Python environment. The findings reveal a nuanced relationship between landslide hazard levels and SOC dynamics, with varying trends observed for different landslide types. In addition, this study investigates the potential impact of large-scale landslide events on carbon sequestration in the short term via a case study of the May 2023 landslide event in the Emilia Romagna region of Italy. The analysis reveals a substantial reduction in above-ground biomass by 35%, which approximately accounts for the loss of 0.133 MtC, and a decrease in SOC accumulation in 72% of the affected areas, indicating that landslides can transform carbon sinks into carbon sources, at least in the short term, and suggested that carbon released from extreme landslide events at a larger scale needs to be accounted for in regional or national carbon emissions. This research underscores the importance of considering landslides in carbon cycle assessments and emphasizes the need for sustainable land management strategies to protect and enhance carbon sinks, such as forests and healthy soils, in the face of increasing natural hazards and climate change impacts

    Data for "Testing Analogical Rule Transfer in Pigeons (Columba livia)"

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    Data for "Testing Analogical Rule Transfer in Pigeons (Columba livia)" by Muhammad A. J. Qadri, F. Gregory Ashby, J. David Smith and Robert G. Cook<br

    The effect of therapeutic and Nd:YAG laser as an adjunct treatment modality in periodontal therapy

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    Laser irradiation has been proposed as an adjunct to conventional scaling and root planing in the treatment of periodontitis. However, the reported outcomes of studies to date are contradictory and the literature provides limited evidence to support an additional benefit of laser application. The overall aim of the present thesis was to explore the potential of adjunctive application of therapeutic and surgical lasers to improve treatment outcomes, expressed in terms of clinical, radiographic and immunological parameters.The present thesis is based on a series of four clinical studies of patients with moderately severe periodontitis, treated by scaling and root planing. Two different types of dental laser were investigated. Therapeutic lasers, which are claimed to stimulate cell regeneration and boost the immune system, were investigated in studies I and II: the general effect was investigated in Study I, while Study II compared the difference between gas and diode lasers in the same spectrum, in order to evaluate the importance of the length of coherence in biostimulation. In studies III and IV, the surgical Nd:YAG laser, which is usually applied for sulcular debridement and pocket decontamination, was evaluated in a novel approach. The test procedure comprised one single application of the laser with water coolant after conventional scaling and root planing. In study III, the outcome was evaluated after 3 months and in Study IV the long term outcome was evaluated, at least one year post-treatment.The split mouth design was used in all four studies. Study I showed a better clinical outcome on the laser treated side and some improvement in immunological parameters. The results of Study II support the hypothesis that a laser with a long length of coherence is superior to one of a shorter length, although both lasers had some positive clinical effect. In Study III a single application of the Nd:YAG laser as an adjunct to scaling and root planing improved the short-term outcome and Study IV confirmed that this improvement was sustained.In conclusion, the results of these studies confirm the potential role of laser irradiation as a non-invasive adjunctive to scaling and root planing in the treatment of periodontitis.List of scientific papersI. Qadri T, Miranda L, Tunér J, Gustafsson A. (2005). "The short-term effects of low-level lasers as adjunct therapy in the treatment of periodontal inflammation" J Clin Periodontol 32: 714-719. https://doi.org/10.1111/j.1600-051X.2005.00749.x II. Qadri T, Bohdanecka P, Tunér J, Miranda L, Altamash M, Gustafsson A (2007). "The importance of coherence length in laser phototherapy of gingival inflammation: a pilot study." Lasers Med Sci 22: 245-251. https://doi.org/10.1007/s10103-006-0439-1 III. Qadri T, Poddani P, Javed F, Tunér J, Gustafsson A. (2010). "A short-term evaluation of Nd:YAG laser as an adjunct to scaling and root planing in the treatment of periodontal inflammation." J Periodontol 81: 1161-1166. https://doi.org/10.1902/jop.2010.090700 IV. Qadri T, Javed F, Poddani P, Tunér J, Gustafsson A. (2010). "Long-term effects of a single application of a water-cooled pulsed Nd:YAG laser in supplement to scaling and root planing in patients with periodontal inflammation." [Accepted] https://doi.org/10.1007/s10103-010-0807-8 </p

    Variations on the Author

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    “Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship

    Modelling Image Semantic Descriptions from Web 2.0 Documents using a Hybrid Approach.

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    With the increasing amount of multimedia content on the web added as user generated content in Web 2.0 websites, conventional multimedia information retrieval is presented with new challenges. It is no longer possible to rely only on meta-data based retrieval but to consider also content based techniques combined with the collective knowledge generated by users’ contributions and geo-referenced meta-data. Tagging is a modest way to annotate such documents and fails to capture a full semantic description of the document content. This report concerns ongoing research to investigate a means to identify, model and utilise semantic descriptions of the user-generated content in Web 2.0 documents using a hybrid approach. The approach consists of three main components, natural language processing, image analysis and a shared knowledge base. In this paper we describe the complete model but, as the image analysis component is in its early stages, the results focus on the natural language processing and the knowledge base. We show that the additional use of these components can improve retrieval and analysis performance over that based only on Web 2.0 tags

    [Newspaper Clipping: Author Claims Evidence of Second JFK Assassin #1]

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    Newspaper article titled "Author Claims Evidence of Second JFK Assassin." The article states that author Richard J. Whalen concluded "that there is circumstantial evidence to support the theory of a second assassin in the shooting of President John F. Kennedy.
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