1,720,994 research outputs found
Modified reverse septal flap: A surgical hint
Full text linkEndoscopic resection with transnasal craniectomy (ERTC) and skull-base reconstruction (SBR) are effective techniques for sinonasal/skull-base malignancies treatment. Endoscopic endonasal SBR techniques are mainly based on homologue-free grafts with excellent outcomes, but alternative techniques can be used such as regional vascularized pedicled flaps or local pedicled flap-like Hadad–Bassagasteguy nasoseptal flap and the septal flip flap (SFF). The purpose of this article is to describe an inferiorly based septal flap aimed to promote mucosal healing and improve patients’ quality of life. We reported a clinical case of 51-year-old female affected by olfactory neuroblastoma, Hyams-II, Kadish-INSICA-B treated with unilateral ERTC and SBR with fascia lata, SFF, and modified reverse septal flap (mRSF). The mRSF harvesting is described in detail, to obtain a lower hinged flap with random vascularization, which can be rotated to cover the exposed bone of the nasal cavity floor. Endoscopic evaluations immediately showed rapid healing with a minimal amount of nasal crusting, despite the adjuvant treatment and the short time since the surgery. This surgical technique is a simple and viable way to boost nasal healing after endoscopic endonasal surgery and for nasal floor resurfacing after septal removal following a unilateral ERTC
Malignant Tumours
No full textSinonasal malignant tumours generally present insidiously and in advanced stages and as such are often associated with poor survival outcomes. Adequate diagnostic workup is of utmost importance for planning the most appropriate treatment strategy, which is driven by the tumour histotype, and the management requires the cooperation in a multidisciplinary oncologic skull base team. A wide spectrum of malignancies with different biological aggressiveness can affect the sinonasal tract, with adenocarcinoma and squamous cell carcinoma being the most common. Integration of multimodal treatment strategies, with different regimens of chemotherapy and radiotherapy, is able to improve survival outcomes
Esperienze di compostaggio aziendale
No full textLa produzione e l’uso delle differenti tipologie di compost (letame compo-stato, compost da FORSU Frazione Organica del Rifiuto Solido Urbano, am-mendante compostato verde e misto) sono il risultato della chiusura del ciclodel carbonio all’interno dell’azienda, tra aziende, tra settore agricolo ecivile/industriale. Fra le fonti di materiale organico stabilizzato da impiegareper favorire l’incremento di carbonio nel suolo, il letame è fra le migliori perla sua simultanea funzione ammendante, correttiva e nutrizionale. Il letame microbiologicamente stabilizzato (compostato) è oggi un bene didifficile reperibilità, sempre più raro e costoso. Ciò a causa di vari fattoriquali la dissociazione a livello aziendale tra attività zootecnica e produzionevegetale; la mancata adozione di tecnologie che riducano i tempi di otteni-mento del letame maturo (ad esempio il compostaggio in trincea; lamancanza di attrezzature aziendali come lo spandiletame, ecc).
n diversi contesti ambientali, progetti di trasferimento condotti dal gruppodi frutticoltura dell’UNIBAS hanno evidenziato come, integrando attività zoo-tecnica e coltivazioni arboree, sia possibile produrre, con tecniche semplifi-cate e a costi contenuti, letame compostato di ottima qualità. Il principale punto critico da considerare nella catena del compost risultasempre la distanza tra i punti di approvvigionamento delle matrici da com-postare (letame e residui di potatura) ed il luogo di produzione/utilizzo delmateriale stabilizzato che non deve superare i pochi chilometri. Infatti gliinterventi più sostenibili risultano sempre quelli realizzati in aziende mistefrutticolo/ zootecniche o in condizioni territoriali in cui le aziende frutti-cole/viticole e quelle zootecniche distano fra loro pochi chilometri. In aziende con produzione di cascami verdi si può ricorrere all’uso di tecno-logie semplificate di compostaggio aziendale per la produzione di preziosiammendanti compostati verdi da utilizzare in particolare su colture sottoserra. Le ricerche condotte in questi anni hanno evidenziato una specificità nel-l’azione nutrizionale, soppressiva (controllo dei patogeni tellurici), biostimo-lativa dei diversi tipi di compost in relazione alle matrici utilizzate ed allatecnologia di compostaggio adottata (compost specifico per soluzione di specifici problemi). È stato evidenziato quindi come il compostaggio aziendale assuma semprepiù un ruolo centrale nell’ambito della sostenibilità dei sistemi agricoli. At-tualmente le ricerche sono concentrate sulla valutazione della sostenibilità(economica, ambientale e energetica) della filiera del compost in differenti scenari (campo coltivato, azienda agricola, reti di aziende, comparto agroalimentare).L’UNIBAS ha condotto esperienze di compostaggio presso aziende viticole incui gli apporti di compost sono realizzati una sola volta nell’anno, in generaledopo la vendemmia. In tali condizioni, metodi di compostaggio lenti come il“cumulo passivo” sono ideali in quanto valorizzano a pieno il materiale strut-turante derivante dalla potatura delle colture legnose, richiedono minimi costi di investimento e gestione, conseguono il compost maturo nell’arco temporale dell’anno, sincronizzato alle esigenze di apporto di ammendante dell’azienda viticola
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
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