630 research outputs found
Microplastics in Freshwater: What Is the News from the World?
No full textPlastic has become a “hot topic” for aquatic ecosystems’ conservation together with other issues such as climate change and biodiversity loss. Indeed, plastics may detrimentally affect habitats and biota. Small plastics, called microplastics, are more easily taken up by freshwater organisms, causing negative effects on growth, reproduction, predatory performance, etc. Since available information on microplastics in freshwater are fragmentary, the aim of this review is twofold: (i) to show, analyse, and discuss data on the microplastics concentration in freshwater and (ii) to provide the main polymers contaminating freshwater for management planning. A bibliographic search collected 158 studies since 2012, providing the scientific community with one of the largest data sets on microplastics in freshwater. Contamination is reported in all continents except Antarctica, but a lack of information is still present. Lentic waters are generally more contaminated than lotic waters, and waters are less contaminated than sediments, suggested to be sinks. The main contaminating polymers are polypropylene and polyethylene for sediment and water, while polyethylene and polyethylene terephthalate are mainly found in biota. Future research is encouraged (1) to achieve a standardised protocol for monitoring, (2) to identify sources and transport routes (including primary or secondary origin), and (3) to investigate trophic transfer, especially from benthic invertebrates
Cassetta Cesarini. Documenti 20 e 21
No full textFirenze, Biblioteca Medicea Laurenziana, Documenti del Concilio di Firenze.
Su concessione del Ministero dei Beni e delle Attività Culturali e del Turismo.
E\u27 vietata ogni ulteriore riproduzione con qualsiasi mezzo.
Tra i documenti conservati all\u27interno della Cassetta Cesarini, inumeri 20-21 corrispondono a due documenti di poche righe scritti in arabo.
Vengono riportati per completezza, ma non sono stati descritti.Firenze, Biblioteca Medicea Laurenziana, Documenti del Concilio di Firenze.
Su concessione del Ministero dei Beni e delle Attività Culturali e del Turismo.
E\u27 vietata ogni ulteriore riproduzione con qualsiasi mezzo.
Tra i documenti conservati all\u27interno della Cassetta Cesarini, inumeri 20-21 corrispondono a due documenti di poche righe scritti in arabo.
Vengono riportati per completezza, ma non sono stati descritti
Preliminary indoor evidences of microplastic effects on freshwater benthic macroinvertebrates
No full textIs the weight of plastic litter correlated with vegetal wrack? A case study from a Central Italian beach
No full textHydra vulgaris assay as environmental assessment tool for ecotoxicology in freshwaters: a review
No full text
Over-the-scope clip and self-expandable metal stent: a comprehensive treatment for failed peroral endoscopic myotomy and fibrosis complications in idiopathic achalasia
No full textAchalasia is a rare esophageal motility disorder that affects both sexes and all ages. Peroral endoscopic myotomy (POEM) has been reported as an optional treatment since 2010 [1]. Frequently associated adverse events include pneumoperitoneum, pneumomediastinum, and pneumothorax, which are usually asymptomatic and managed conservatively [2, 3]. Perforation, bleeding, mediastinitis, and peritonitis rarely occur and are often symptomatic. Mucosal injuries (including dehiscence, ulcer, and ischemia) do not alter the post-procedural course [4]. A 31-year-old man, affected by idiopathic achalasia, was admitted as an outpatient to our Gastroenterological Unit owing to symptom recurrence and weight loss (Eckardt score 8). Two years before, he had undergone POEM, which was complicated by pneumomediastinum and ischemic damage of the distal esophagus with residual fibrosis. An esophagogram revealed a dilated
esophagus (maximum diameter 60mm) and supracardial stricture extending 15 mm above. His dysphagia was most likely worsened by post-POEM complications. We planned to place a fully covered removable metal stent (SEMS; 60 × 27mm) to achieve progressive, effective dilation of the distal esophagus . The SEMS would be firmly fixed by means of an over-the-scope (OTS) clip. This novel OTS clip device has demonstrated success in reducing SEMS migration even in benign diseases [5]. The SEMS was released 10mm above the post-POEM stricture, 25 mm above the cardia, and fixed by means of the OTS
clip. The patient was discharged uneventfully on the same day. An alternative approach (Heller myotomy) was ready to be employed in case of failure. At the 4-week follow-up, dysphagia had improved and the patient had gained weight. Both the OTS clip and the SEMS were removed using the remOVE device (Ovesco Endoscopy AG, Tübingen, Germany) . The patient was discharged uneventfully 12 hours later. After a further 4 weeks, an esophagogram revealed a significant reduction in the esophagus dilation and the patient’s clinical condition had significantly improved (Eckardt score 0)
PNRR: Un'opportunità per il turismo e per il territorio
No full textIl PNRR è un programma di modernizzazione che prevede per l'Italia 191,5 miliardi di euro, dei quali 68,5 a fondo perduto. I territori nella loro articolazione di Enti Locali gestiranno circa il 60 per cento delle risorse, molte delle quali previste per il SUD. La frammentarietà dei Comune e la loro ridotta capacità amministrativa, rischiano di compromettere l'efficace utilizzo dei fondi
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