1,720,986 research outputs found

    URBAN FLOWS SIMULATOR BASED ON COMPLEX SYSTEM OF QUEUES: PROCEDURES FOR SIMULATOR GENERATION

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    In a previous work [Pasini L and Feliziani S 2013 TASK Quart. 17 (3) 155], we have defined an object library that allows the building of architectural models of urban traffic systems. In this work we illustrate the procedures that enable us to produce a system simulator starting from the architectural model of an urban vehicular traffic system

    Cloud: Presente e futuro

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    Cloud is an emerging technology that allows making the increasing demand of advanced technology at a lower cost, in an easier and more effective manner. This article will contain some information regarding this new technology. The emphasis will be both on state of the art and objectives of future research about cloud. In particular, Section 1 provides introductory information about cloud. Section 2 provides a set of common definitions and deepens cloud’s features from different perspectives. Section 3 analyzes the usage scenarios for cloud and in particular, what features are considered most important. Section 4 compares the strengths and characteristics of cloud against its current usage. Section 5 explores the major research topics and assesses their complexity and relevance. Section 6 concludes the report with a series of general considerations

    Cloud Readiness Assessment of Legacy Application

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    Applications and services hosted in the cloud are increasing continuously. Cloud technology offers important perspectives (performance, high availability, elasticity) and it enables new business models. Unfortunately, this new paradigm faces unprecedent requirements not addressed in legacy application (multi-tenancy, scalability, etc.). This leads to complex re-engineering phases in order to to migrate existing software into a cloud environment. Before starting a migration, it is important to analyze the cloud compliance of the application, what to expect after the migration and the effort required to fulfill these expectations. This paper assesses a way to extract an index that describes the feasibility of the re-engineering. We test the metric with a real application that needs to be migrated to a private cloud

    Inflammatory response during human vaginal infection with Candida albicans

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    Introduction. The microbiological, pathological and clinical factors determining vaginal candidiasis and recurrent vaginal candidiasis have long been studied, particularly using rodent models. The validity of which for understanding the pathogenesis of disease in women has been questioned. The most prevalent agent is critically determined by activation of microbial and host factors leading to persistent vaginal inflammation coupled to the inability of the inflammatory cells to resolve the fungal infection. Here we studied the activation of inflammasome complex neutrophil-recruiting and activating cytokines in the vaginal secretion of women with clinically established vaginal candidiasis. Materials and methods. In human vaginal samples positive for C. albicans with vaginal candidiasis (n=20) and carriage (n=15), infiltration of neutrophils, inflammatory mediators such as IL-8 and IL-1β, activation of inflammasome complex and expression of aspartyl proteases (SAPs) were examined. Results. In vaginal swabs of patients with vaginal candidiasis we found: i) consistent recruitment of neutrophils; ii) appreciable level of IL-8 and IL-1β; iii) activation of inflammasome complex; iv) consistent expression of SAP2, SAP5 and SAP6. Conclusions. These results show that immunopathogenesis of vaginal candidiasis is mediated by local recruitment of neutrophils, inflammatory cytokines secretion and inflammasome activation that mirror the upregulation of SAP2, SAP5 and SAP6 gene expression

    Initial In Vivo Evaluation of a Novel Amikacin-Deoxycholate Hydrophobic Salt Delivers New Insights on Amikacin Partition in Blood and Tissues

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    In this study, an initial in vivo evaluation of a new amikacin-deoxycholate hydrophobic salt aimed at potentiating amikacin action against hard-to-treat lung infections was undertaken by quantifying, for the first time, amikacin in whole blood. Pharmacokinetic evaluation after intranasal administration in a murine model showed higher drug retention in the lungs compared to blood, with no significant differences between the salt and the free drug. Upon repeated administrations, the two treatments resulted in nonsignificant tissue damage and mild higher inflammation for the hydrophobic salt. Whole-blood analysis highlighted an unreported high partition of amikacin in blood components up to 48 h, while significant lung levels were measured up to 72 h. Such a new observation was considered responsible for the nearly overlapping pharmacokinetic profiles of the two treatments. To overcome such an issue, a dry powder in an inhalable form may be best suited. Moreover, if confirmed in humans, and considering the current once-a-day regimen for amikacin aerosols, important yet-to-be-explored clinical implications may be postulated for such amikacin persistence in the organism
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