428 research outputs found
THE MISSING DATIVE ALTERNATION IN ROMANCE: EXPLAINING STABILITY AND CHANGE IN THE ARGUMENT STRUCTURE OF LATIN DITRANSITIVES
This study explores the correlation between synchronic constructional variation shown by ditransitive verbs in Late Latin and (possible) diachronic developments, investigating the reasons why such developments did or did not occur throughout the history of this language. Starting from a comparison with the rise of the so-called ‘dative alternation’ in English, which emerged from a scenario that, apparently, was similar to the one found in Late Latin, we address the question as to why in the diachrony of this language such a linguistic phenomenon did not develop at all for some verbs and did not become productive for others – what we may call the ‘missing dative alternation’ in Romance. Drawing on a corpus-based study of six verbs instantiating different types of ditransitive constructions since Early Latin, we show that each form has its own history, attesting to different instances of stability and/or change in its argument structure. We will also argue that when individual histories of single forms eventually converge on the same result, as happened in Romance, a comprehensive explanation is also needed. This study suggests such an explanation by shedding light on different functional motivations that triggered specific pathways of change and disfavoured other possible developments
Influence of permeability on the hydrothermal system at Vulcano Island (Italy): inferences from numerical simulations
AbstractVolcano-hydrothermal systems are governed by complex interactions between fluid transport, and geochemical and mechanical processes. Evidence of this close interplay has been testified by distinct spatial and temporal correlations in geochemical and geophysical observations at Vulcano Island (Italy). To understand the interaction between fluid circulation and the geochemical and geophysical manifestations, we perform a parametric study to explore different scenarios by implementing a hydro-geophysical model based on the equations for heat and mass transfer in a porous medium and thermo-poroelastic theory. Numerical simulations allow us to define the controlling role of permeability distribution on the different modeled parameters as well as on the geophysical observables. Changes in the permeability within the highly fractured crater area could be responsible for the fluctuations in gas emission and temperature recorded during the crisis periods, which are accompanied by shallow volcano-seismicity in the absence of significant deformation and gravity variations. Despite the general medium permeability of the volcanic edifice, the presence of more highly permeable pathways, which allow the gas to rapidly escape, as testified by the presence of a well-developed fumarolic field, prevents the pressure buildup at shallow depths.
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A case of sarcoidosis with isolated hepatosplenic onset and development of inflammatory bowel disease during recovery stage
Sarcoidosis is a systemic disease characterized by an immune-mediated disorder, which leads to the development of non-caseating granulomas in the involved organs. More than 90% of patients with sarcoidosis present lungs and lymphatic system involvement at onset, while less than 10% has an isolated extrapulmonary localization. Here, we describe the case of an elderly patient with isolated hepato-splenic onset (multiple splenic lesions at imaging and cholestasis), and subsequent pulmonary involvement. The liver biopsy showed the presence of noncaseating granulomas, suggesting sarcoidosis. Despite the complete recovery was obtained with steroid therapy, after dosage reduction the patient presented watery diarrhea. Endoscopic investigations with biopsies were performed, describing the presence of an important lympho-plasmacytic infiltrate of terminal ileum mucosa with typical aspects of inflammatory bowel disease. The symptomatology completely disappeared after steroid dosage increase. This case confirms that sarcoidosis could present in a very atypical way, involving several organs in a different manner at the same time and that every symptom should not be underestimated, despite the rare presentation
Hepatocellular Carcinoma: Known and Emerging Risk Factors
Hepatocellular carcinoma (HCC) is the most frequent primary liver cancer
with a high mortality rate. While chronic hepatitis B virus (HBV) and hepatitis
C virus (HCV) infections represent the leading risk factors worldwide, the
spreading of metabolic disorders, such as diabetes, obesity and non-alcoholic
fatty liver disease (NAFLD) justifies the increasing attention on their oncogenic
mechanisms. This review discusses about the main pathogenic mechanisms
implicated in occurrence of HCC in presence of viral and metabolic
diseases. Additionally, it points to the importance of clinical surveillance for
those patients considered at risk of HCC and highlights the strategical role of
serum markers, such as alfa-fetoprotein (αFP) and Protein Induced by Vitamin
K Absence or Antagonist II (PIVKA-II), which, in association to a strictly
instrumental follow-up, contribute to the early detection of hepatic nodules
with a better prognosis for affected patients
Pyrosequencing analysis of fungal assemblages from geographically distant, disparate soils reveals spatial patterning and a core mycobiome
Identifying a soil core microbiome is crucial to appreciate the established microbial consortium, which is not usually subjected to change and, hence, possibly resistant/resilient to disturbances and a varying soil context. Fungi are a major part of soil biodiversity, yet the mechanisms driving their large-scale ecological ranges and distribution are poorly understood. The degree of fungal community overlap among 16 soil samples from distinct ecosystems and distant geographic localities (truffle grounds, a Mediterranean agro-silvo-pastoral system, serpentine substrates and a contaminated industrial area) was assessed by examining the distribution of fungal ITS1 and ITS2 sequences in a dataset of 454 libraries. ITS1 and ITS2 sequences were assigned to 1,660 and 1,393 Operational Taxonomic Units (OTUs; as defined by 97% sequence similarity), respectively. Fungal beta-diversity was found to be spatially autocorrelated. At the level of individual OTUs, eight ITS1 and seven ITS2 OTUs were found in all soil sample groups. These ubiquitous taxa comprised generalist fungi with oligotrophic and chitinolytic abilities, suggesting that a stable core of fungi across the complex soil fungal assemblages is either endowed with the capacity of sustained development in the nutrient-poor soil conditions or with the ability to exploit organic resources (such as chitin) universally distributed in soils
Understanding care relationships in diabetes practice. A psychodynamic interview-based exploratory study
ObjectiveTo explore the subjective experience of physicians working in diabetic settings about their care relationships in order to find some unique clues contributing to physician professional health and capacity to manage patients' adherence.Research design and methodsAn interview-based exploratory study has been carried out involving 18 physicians (77.8% female) with at least 3 years of clinical practice in diabetes care. In-depth interviews about the emotional experience with patients with diabetes were conducted and audio recorded. Interviews transcripts were analyzed through a computer-based text analysis which allowed the identification of thematic domains (Cluster Analysis) and latent factors (Correspondence Analysis) viewed through a psychodynamic and constructivist lens.ResultsSix thematic domains emerged respectively referring to: Concern (8.43%), Control (14.42%), Ambivalence (22.08%), Devotion (22.49%), Guilt (19.29%) and Strive for Achievement (13.30%). Moreover, three latent dimensions were taken into account, which explained 69.20% of data variance: Affect Repression (28.50%), Tendency to Repair (22.70%) and Anxiety Pattern (18.00%).ConclusionsOverall, the results of the present study confirm the challenging nature of diabetes care. In particular, physicians ongoing effort to restore patients' psychological integrity in chronic condition constitute the most novel finding above all. In this regard, the need for emotional labor in physicians' education and training is suggested in order to both prevent burnout symptoms (e.g. depersonalization) and promote shared decision making in care relationships. However, findings should be treated as preliminary given the convenience nature of the sample and its reduced size
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