86,969 research outputs found
Corrigendum: In the Wake of the Ongoing Mass Mortality Events: Co-occurrence of Mycobacterium, Haplosporidium and Other Pathogens in Pinna nobilis Collected in Italy and Spain (Mediterranean Sea) (Frontiers in Marine Science, (2020), 7, 10.3389/fmars.2020.00048)
No full textIn the original article, the given name and surnames were switched for Elisabetta Antuonfermo, Simone Farina, Fulvio Salati, Daniela Mandas, Rossella Panarese, Eleonora Fiocchi, and Tobia Pretto. The correct version appears above. The authors apologize for this error and state that this does not change the scientific conclusions of the article in any way. The original article has been updated
Salati L., Schito P., Cheli F., “Heavy truck drag reduction devices installed on the trailer: front and rear appendages”, Aerovehicles 1, Bordeaux (France), June 2014
No full textStrategies to reduce the risk of side wind induced accident on heavy truck
No full textVehicles, in particular high-sided lorries and trucks, can be at risk of wind-induced accidents such as overturning and/or side slip, especially on exposed sites such as embankments, viaducts and bridges. A first solution, lies in designing fences and a lateral shield to be placed both at the edges of the bridge and close to the tower, thereby shielding the vehicle from cross-wind. Nevertheless, it is also possible to optimize the aerodynamic response of the vehicle. In this work, several strategies were used and compared to optimized the aerodynamic response of the Heavy Good Vehicle (HGV) in crosswind: changing of the shape of the trailer, vortex Generators (VGs) installed on the leading edge of the trailer and passive devices installed along the sides/top of the trailer. Front-rear trailer devices, previously designed and patented by the author, positioned on the sides of the trailer reduced the overturning moment by about 8%. Steady state and time variant CFD simulations were used. The numerical models were validated with wind tunnel test. (C) 2019 Elsevier Ltd. All rights reserved
Enterococcus seriolicida and streptococcus spp. (S. iniae, S. agalactiae and S. dysgalactiae)
No full textChapter on Enterococcus seriolicida and streptococcus spp. (S. iniae, S. agalactiae and S. dysgalactiae
Presence of Contracaecum spp. in teleosts cultured and fished in Sardinia.
No full textThis study reports the results of the finding of Contracaecum spp. during a survey on endoparasites isolated from cultured and wild fish and also from some cephalopods caught in Sardinian waters. Contracaecum spp. is a nematode belonging to the Anisakidae, and is reported to cause zoonosis in humans. Nematodes were detected after visual inspection and enzymatic digestion and then identified by morphologic observation, which was confirmed by PCR. The results show that Contracaecum spp. were found in both fish caught from sea or lagoon, and in both cultured and wild fish: 33 of the parasitized samples were wild fish (24 caught in the sea and 9 in lagoons) and 11 were cultured ones. The prevalence of Contracaecum spp. was higher in Diplodus spp. (16.0%), Sparus aurata (15.8%) and Mullus spp. (14.6%). Larvae were also found by enzymatic digestion at muscular level in 5 species, with the highest prevalence in S. aurata (10.5%). The results of this study indicate that Contracaecum spp. was present in cultured fish such as S. aurata, Diplodus spp. and Dicentrarchus labrax. All cultured fish with parasites were collected from land-based semi-intensive tanks whose water came from an adjacent lagoon. Finally, the evidence that this parasite is found in both cultured and wild fish leads us to re-consider the zoonotic potential of Contracaecum spp., in particular when one bears in mind its dimensions at the L3 stage, when it is barely visible to the human eye. © 2013 Elsevier B.V
Late thoracic pseudo-aneurysm causing collapse of vascular prostheses
No full textThe outcome of patients with thoracic vascular prostheses is usually uneventful. We report two cases of collapse of thoracic vascular prostheses which occurred ten and forty years, respectively, after the implantation. The diagnoses were obtained preoperatively by CT-scan or NMR and angiography. Both patients were successfully treated with prosthetic replacement by an open approach
Perspective on the use of humic acids from biomass as natural surfactants for industrial applications
No full textIn the context of renewable vs. non-renewable sources of chemical compounds, the development of natural surfactants as a substitute for synthetic surfactants in technological applications is an important issue. In addition, as synthetic surfactants can persist in the environment causing toxic effects, the use of natural products presents a possibility to minimize impact on the environment. Nowadays, a promising new approach in surfactant-based technologies, consists of the use of humic acids (HAs) extracted directly from biomass that exhibit amphiphilic properties, and can be conveniently used as environmentally friendly surfactants. The raw material from which HAs are extracted and their macromolecular composition affect surfactant properties. Therefore fundamental data from more strictly qualitative aspects, need. s to be investigated. This review highlights surfactant ability and chemical properties of HA substances coming from renewable sources in comparison to synthetic surfactants, and points out the capacity for HAs to be used effectively in this field of application
- …
