178,049 research outputs found
Wyn Jones A.P. et al.:surveillance of adenoviruses and noroviruses in european recreational waters- Gabrieli R. (VIROBATHE Group)-
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Determining the Permeability of Porous Bioceramic Scaffolds: Significance, Overview of Current Methods and Challenges Ahead
No full textThe "architectural suitability" of scaffolds for bone tissue engineering is commonly evaluated by assessing the pore volume and the mean pore size (or pore size distribution, if possible) and comparing these values with the reference ranges of human cancellous bone. However, these two parameters cannot precisely describe the complex architecture of bone scaffolds and just provide a preliminary comparative criterion. Permeability is suggested as a more comprehensive and significant parameter to characterize scaffold architecture and mass transport capability, being also related to bone in-growth and, thus, functional properties. However, assessing the permeability of bioactive ceramics and glass scaffolds is a complex task from both methodological and experimental viewpoints. After providing an overview of the fundamentals about porosity in scaffolds, this review explores the different experimental and numerical approaches used to determine the permeability of porous bioceramics, describing the methodologies used (pump-based, gravity-based, acoustic and computational methods) and highlighting advantages and limitations to overcome (e.g., reliability issues and need for better standardization of the experimental procedures)
The total anterior tenoarthrolysis in the treatment of the stiffness in flexion of the fingers
No full textThe total anterior tenoarthrolysis (TATA) allows tenolysis, arthrolysis and skin repair in the same operation, avoiding combined different surgical procedures. The authors present a series of personal and original indications and propose a partial anterior tenoarthrolysis (PATA) for the treatment of isolated stiffness of the proximal interphalangeal joint or in the presence of less severe flexion contractures. The etiology was wide various, and the TATA revealed to be extremely useful also in tetraplegia or spasticity, permitting respectively the following tendon transfer and the hygienic improvement, and in the presence of global stiffness following complex lesions, reflex sympathetic algodystrophy or psychotic contracture. The performed additional procedures, at the skin and tendon level, further expanded the inclusion criteria. In the presence of appropriate indications, the TATA is a very useful tool with excellent outcome and represents a salvage procedure in the more severe deformities, avoiding joint fusion, with shortage of the digit, or amputation
A rare case of acral myxoinflammatory fibroblastic sarcoma at the hand
No full textOne case of acral myxoinflammatory fibroblastic sarcoma is presented. Most of the soft tissue tumefactions of the distal extremities are benign. Sarcomas are rare and usually high grade. Acral myxoinflammatory fibroblastic sarcoma is a unique low-grade tumor described by Kindblom in 1998. This neoplasm has a propensity for digits, presents a low rate of metastasis and is characterized by a high rate of local multiple and aggressive recurrence. The clinical presentation, the frequent association with tenosynovitis and the extensive inflammatory infiltrate can lead to misdiagnosis by both the surgeon and the pathologist. Correct and early diagnosis depends on a good knowledge of histological and immunohistochemical findings. It is important to avoid recurrences recurring to an immediate wide excision of the tumor. © Springer-Verlag 2009
Il trattamento delle lesioni legamentose nelle fratture isolate del perone
No full textQuesto studio retrospettivo riguarda il trattamento delle fratture isolate del perone con sublussazione dell’astragalo. Scopo dello studio è il controllo a distanza (follow-up di 4 anni e 5 mesi) dei risultati del trattamento chirurgico attraverso l’uso dei criteri di Cedell e della scala di valutazione della AOFA
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe 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
Faculty Recital: Atlantic Brass Quintet
No full textThis is the concert program of the Atlantic Brass Quintet performance on Tuesday, December 3, 1996 at 8:00 p.m., at Marsh Chapel, 735 Commonwealth Avenue. Works performed were Sinfonia, "The Arrival of the Queen of Sheba" (arr. Foley) by George Frideric Handel, Canzona Prima a 5 by Giovanni Gabrieli, Ricercar del Primo Tuono by Andrea Gabrieli, Canzona Per Sonare No. 2 by Giovanni Gabrieli, Three Renaissance Dances by Antony Holborne, Brandenburg Concerto No. 3, BWV 1048 (arr. Foley) by Johann Sebastian Bach, Selections from the Nutcracker, Op. 71 (arr. Foley) by Piotr Ilyich Tchaikovsky, In Dulci Jubilo by Samuel Scheidt, A Sussex Mummers Christmas Carol by Percy Grainger, A Child is Born by Thad Jones, An American Christmas (arr. R. Luke), traditional, and Selections from "The Messiah" (arr. Foley) by George Frideric Handel. Digitization for Boston University Concert Programs was supported by the Boston University Humanities Library Endowed Fund
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