This paper reports quantitative mechanical characterization of silicon carbide (SiC) nanowires (NWs) via in situ tensile tests inside scanning electron microscopy using a microelectromechanical system. The NWs are synthesized using the vapor-liquid-solid process with growth direction of ⟨111⟩. They consist of three types of structures, pure face-centered cubic (3C) structure, 3C structure with ...

To evaluate the advantages and efficacy of two point mini plate fixation for the zygomatic complex fractures using lateral eye brow and infra orbital approaches for fixing the fronto zygomatic fracture and infra orbital fracture. The zygomatico-maxillary complex functions as the principle buttress of the face and is the cornerstone to an individual’s aesthetic appearance. The zygomatic complex ...

The myelin sheath of the goldfish lateral line nerve has been studied by means of the freeze-etch technique. Fracture faces of the myelin lamellae reveal linear structural elements which in some respects resemble those of tight junctions. In unfixed myelin rows of particles on the ef face are matched by narrow grooves on the pf face. Fixation with glutaraldehyde produces a partitioning of junct...

The membrane architecture of the cytoplasmic tubules in lamprey chloride cells has been studied by electron microscopy using thin-section and freeze-fracture techniques. The chloride cell of lampreys (Lampetra japonica, Petromyzon marinus) is largely occupied with a continuous network of cytoplasmic tubules, which are derived from the invagination of the basolateral plasma membrane. The lumenal...

The various situations representing coastal cliffs of Haute Normandy are tested on numerical models. The parameters taken into account are: the lithology of chalks and the presence or absence of fractures. It is a question of specifying the mechanical characteristics of chalk and the inside of the fractures. The chalk cliff of 80m height, with a vertical cliff face, is modeled in distinct eleme...

This study applies conjoint analysis (CA) to estimate the marginal willingness-to-pay (MWTP) of elderly individuals for a reduction of the risk of fracture of the femur. The good in question is a hypothetical hip protector which lowers the risk of a fracture by different amounts. Other attributes are ease of handling, wearing comfort, and out-of-pocket cost, which are traded off against risk re...

Orbital injuries are often missed out when they occur concomitantly with other facial bone fractures. Clinical examination and plain radiographic findings alone may prove inadequate in the detection of orbital floor fractures. Refined imaging techniques like CT scans and MRI are immensely helpful in the diagnosis of orbital blowout fractures. A case of 'impure' orbital blowout fracture which we...

Pediatric maxilla facial fractures are rare compared to adult maxilla facial injuries. However, they follow a different pattern of presentation and management principles. As the facial bones in children are in the developing stage, they have to be managed using the most conservative methods possible. Since children have a less hemodynamic reserve, other serious injuries have to be also dealt si...

In Bacteroides buccae, a hexagonally arranged periodic structure was found in the outer membrane (OM), in addition to hexagonal lattices present in its external surface layer (S-layer). This crystalline OM protein (COMP) was present as patches on the concave fracture face (the outer leaflet) of the OM in freeze-fractured cells. Occasionally, hexagonally arranged structures could also be seen on...

Sports-related maxillofacial fractures were analysed in 80 patients, accounting for 5.6% of all patients with facial bone fractures, treated during the 5-year period 1981-1985. 55% of the patients had 1 or more mandibular fractures and 45% had midface fractures. 6% of the patients had multiple injuries. The most common causes of injury were collision and fall. Soccer and ice hockey turned out t...