Fibrous dysplasia; Nasal cavity; Skull base; Endoscopic sinus surgery Abstract Fibrous dysplasia is an uncommon benign tumour in the nasal cavity. Due to adjacent vital soft tissue structures surgery is often the treatment of choice. We report a rare case of polyostotic fibrous dysplasia of the mandible and the ethmoid bone including nasal bony septum with intracranial expansion, and include a ...

objective: various techniques of composite placement have been used to decrease microleakage around the composite restorations. due to controversial results, the present study was conducted to investigate the effect of different placement techniques on microleakage in class v composite restorations. materials and methods: sixty class v cavities were prepared on the buccal and lingual surfaces o...

in design of defense structures, concrete are often used to provide protection against incidental dynamic loadings such as the impact of a steel projectile. in the present study, a new analytical model is proposed to predict penetration depth into concrete targets by ogive nose projectile. hence, to ­ develop the model and simulate penetration of high velocity ogive-shape nose steel projectiles...

About five years ago we were impressed by the frequency with which we were seeing individuals with abdominal distress in whom we found Inflammatory, malignant, or nonmalignant lesions of the organs of the abdominal cavity, with or without ascltes, and associated with the following physical signs at either base of the lungs: 1) Decreased tactile fremitus, 2) Impaired resonance to flatness, not a...

This article presents a novel dual slant polarized antenna for millimeter-wave (mmWave) base stations. Compared with the traditional mmWave antennas, proposed offers advantages of high cross-polarization discrimination (XPD), good aperture efficiency, simple structure, and low profile. The corner-fed substrate integrated waveguide (SIW) cavity is adopted to improve port isolation XPD this slot-...

Diecasting is one of the forming methods which is used for producing large number of components with good surface finish by injecting cast alloys in a metal mould under high pressure. Design of a diecasting die requires human expertise and is normally performed by trial and error method, which leads to monetary and time loss. Automation at initial die design stage will result in higher producti...

A test stand for a proton Linac is currently being built at GSI in the context of the FAIR project. Its low-level rf control system will be based on a system that has been developed for the S-DALINAC at TU Darmstadt operating at 3 GHz. This system converts the rf signal coming from the cavity down to the base-band using a hardware I/Q demodulator. The base-band signals are digitized by ADCs and...

BACKGROUND Juvenile nasopharyngeal angiofibromas (JNAs) are rare, slow-growing tumors of the nasal cavity and skull base that account for approximately 0.5% of all head and neck tumors. This benign, highly vascular tumor is almost exclusively found in adolescent males. JNAs classically present with nasal obstruction and/or recurrent epistaxis. More advanced tumors can present with facial asymme...