1,720,996 research outputs found
Maxillo-malar osteotomy as an approach to the clivus
No full textAmong various approaches to the clivus and upper cervical spine, transmaxillary access gives the neurosurgeon optimal visibility. Maxillo-malar osteotomy permitting the reflection of the osteotomized segment pedicled to the cheek after a Weber-Fergusson type cutaneous incision is the method that for the authors gives the best visibility. A wide operating field from upper clivus to C4 can be obtained by performing a maxillo-malar osteotomy associated with a midline splitting of hard and soft palate. The authors have performed this kind of access in five cases for neurosurgical purposes. Healing was always uneventful and no complications were observed. Occlusion was always restored without intermaxillary fixation, facial scars were of good quality and the only drawback was the section of infraorbital nerve
Facial nerve and parotid surgery
No full textA series of 100 surgical procedures on the parotid gland affected by tumours is reported, with a detailed analysis of facial nerve function after parotid surgery. A low percentage of temporary lesions (28 %) affecting only one branch of the facial nerve, all of which regressed in a short time, and only one case of a permanent lesion affecting the whole nerve, anatomically intact, however, was observed. The authors confirm the safety of parotidectomy, if correctly performed
Mandibulotomy for access to benign deep lobe parotid tumors with parapharyngeal extension: report of four cases
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Neurosensory disturbance of the inferior alveolar and mental nerves after genioplasty alone or in combination with sagittal split mandibular ramus osteotomy
No full textThe Trajan Markets and their Great Hall – The Conservation Problems and the Structural Intervention for the Improvement of the Seismic Safety
No full textThis paper focuses on the Great Hall of Trajan’s Markets in Rome and describes structural analyses and interventions designed and installed to improve structural stability. Trajan’s Markets were subjected to each of the last four big earthquakes that hit Rome, the last occurring in 1703, with a return period of around three-four centuries. The present geometrical and structural configuration of the Markets is different and weaker with respect to the original one, and also weaker with respect to their configuration in 1703. Numerical FEM analyses have been applied, lightening and emphasising the seismic vulnerability of the structure. In particular, the numerical analyses allowed the identification of the most vulnerable parts of the supporting structures as well as the assessment of an adequate retrofitting intervention criterion, based on the use of reversible techniques
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
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