6,992 research outputs found
Prada Evans 1949
No full textPRADA EVANS, 1949 The genus Prada contains three species endemic to mainland New Guinea (Parsons, 1998). Evans (1949) considered Prada to be closely related to the monotypic Tiacellia Evans, 1949 (also from New Guinea), and he classified this pair within the Plastingia group of the subfamily Hesperiinae, although he noted a possible link with the Trapezitinae. Parsons (1998) pointed out that the male genitalia and hindwing venation of Prada rothschildi (Evans, 1928) was similar to that of Rachelia extrusa (C. & R. Felder, 1867). Subsequently, Atkins (2017) transferred Prada and Tiacellia to the Trapezitinae and suggested that Prada and Tiacellia might be closely related to Trapezites and Rachelia based on study of male genitalia and wing venation. Cong et al. (2019) reached a similar conclusion regarding Prada based on molecular data of a limited set of Trapezitinae (10 species representing 10 genera), in which Prada rothschildi was sister to Trapezites symmomus Hübner, 1823 in most of their analyses, rather than to other members of the Hesperiinae in which Prada has traditionally been placed. In our comprehensive molecular phylogeny of Trapezitinae, Prada was placed as sister to Trapezites, thus supporting previous views that this genus belongs in the Trapezitinae and not in Hesperiinae. Our analysis also supports, in part, the hypothesis of Atkins (2017) of a close relationship between Prada and Trapezites. Tiacellia, however, was not recovered within the Trapezitinae, falling well outside this subfamily (Fig. 1). Larval food plants remain unknown.Published as part of Toussaint, Emmanuel F. A., Braby, Michael F., Müller, Chris J., Petrie, Edward A. & Kawahara, Akito Y., 2022, Molecular phylogeny, systematics and generic classification of the butterfly subfamily Trapezitinae (Lepidoptera: Papilionoidea: Hesperiidae), pp. 1407-1421 in Zoological Journal of the Linnean Society 195 on pages 1417-1418, DOI: 10.1093/zoolinnean/zlab086, http://zenodo.org/record/699301
Intraoperative Findings in Spinal Lesions
No full textUltrasonographic appearance of spinal tumors has been described in few studies until now, and the role of intraoperative ultrasound is not yet well standardized in spinal tumor surgery.
To evaluate the spinal cord, probes with very high frequency (10 MHz or greater) can be used with outstanding spatial and temporal resolution. Before tumor removal, the lesion is identified, measured on axial and sagittal axes and defined as hyperechoic, isoechoic, or hypoechoic. Other characteristics of the lesions are considered: presence of calcifications, cystic/necrotic areas, diffuse or circumscribed appearance, and the relationships with the surrounding anatomical structures. Intraoperative ultrasonographic findings of different spinal tumors, according to histotypes and also to position, with respective pictorial essays are here presented. Intraoperative ultrasound is a valuable tool to detect spinal lesions, evaluate the surgical approach, and plan the surgical strategy, considering the position and relationships of the lesion with bony, neural, and vascular structures
Contrast-Enhanced Ultrasound (CEUS) in Neurosurgery
No full textContrast-enhanced ultrasound (CEUS) is a harmonic imaging technique that permits to study tissue perfusion and vascularization using a purely intravascular ultrasound contrast agent (UCA). CEUS is a real-time, dynamic, continuous, and repeatable modality, applicable in neurosurgery for tumors and vessels study. In oncological surgery, CEUS permits to highlight and characterize the lesion through the study of its micro- and macro-circulation. Moreover, it allows to assess the degree of tumor removal and to plan the surgical strategy, highlighting the lesion feeders, drainage vessels, and neighboring vital vascular structures. In vascular surgery, CEUS permits to study the entire vascular tree from arteries, through capillaries, to veins simultaneously without the need to set multiple parameters. It also allows to assess vessel location, dimension, and flow entity and direction without the need of vessel direct exposure, being CEUS a tomographic representation. This leads to protect vital structures preservation and also to evaluate the effect of a procedure on the blood circulation
Responsabilità dell’organizzatore di un pacchetto turistico e del fornitore della prestazione: la disciplina del Codice del Consumo
No full textProroga ex lege della durata delle concessioni demaniali marittime: tra diritto europeo e nazionale
No full textL’utilizzazione delle unità da diporto per finalità alberghiere, enogastronomiche, di intrattenimento
No full textL’evoluzione del settore della navigazione da diporto negli anni più recenti ha visto progressivamente affermarsi nella prassi nuove forme di utilizzo delle unità da diporto per fini di lucro, diverse da quelle originariamente tipizzate dal codice della nautica da diporto e in cui l’attività di navigazione è passata in secondo piano: sempre più, infatti, le unità da diporto sono divenute luogo di aggregazione, di intrattenimento, mutando la loro destinazione naturale (la mera navigazione lusoria), per essere adibite a vere e proprie strutture ricettive, o a ristoranti, o ancora a location esclusiva per organizzare convegni e celebrare feste ed eventi. Il problema che si pone, a seguito dell’affermarsi di tali nuove tipologie di utilizzo delle unità da diporto, concerne la relativa qualificazione giuridica: si constata, a tal proposito, che i contratti di locazione e di noleggio, come disciplinati dal d.lg. 171/2005, sia nella impostazione originaria che in forza delle modifiche frattanto intervenute, riescono a conciliarsi solo parzialmente con le caratteristiche proprie di tali nuove tipologie di utilizzo commerciale
Tipologie speciali del turismo: ecoturismo, turismo culturale, turismo termale; la navigazione da diporto a fini turistici
No full text
La sistematica dei contratti di utilizzazione della nave nell’ordinamento tedesco
No full textGerman Handelgesetzbuch knows shipping contracts as Italian navigation code as well: however Handelgesetzbuch provides several differences from Italian code referring both legal classification of the contract and obligations of the parties
The regulation of State-owned maritime property concessions for tourism and recreational purposes: the continuing conflict between Italian and European law
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