The surgeon encounters orbital fractures in the acute, subacute and chronic settings. In each situation, the treatment goals are similar-restoration of orbital integrity and volume. However, the nuances of treatment can vary widely according to the specific setting and injury. In this chapter, we will attempt to provide an overview of how we approach orbital fractures in a variety of settings, ...

purpose: to present a case of orbital abscess secondary to mandibular odontogenic infection. case report: a 30 year old man presented with ocular pain and exophthalmos of the left eye following a dental infection since a few days ago. a localized abscess was detected in the left orbital ct but the paranasal sinuses were clear. involvement of the left third mandibular molar was evident on facial...

In this paper, firstly, in $E_1^3$, we defined normal Fermi-Walker derivative and applied for the adapted frame. Normal Fermi-Walker parallelism, normal non-rotating frame, and Darboux vector expressions of normal Fermi-Walker derivative by normal Fermi-Walker derivative are given for adapted frame. Being conditions of normal Fermi-Walker derivative and normal non-rotating frame are examined fo...

this research has been carried out to study and find a rather general description for a lone pairorbital in molecules. since the orbital parameters must be manageable in advance, and correctgeometry of the molecule (bond lengths) is depend on the appropriate lone pair description; thefsgo method including optimization has been used to obtain orbital parameters and energy. theproposed models for...

Optical absorption and ESR spectra of reduced vanadium centres in Ca2NaMg2VjOlz are reported. The spectra are interpreted as arising from tetrahedrally coordinated V" and octahedrally coordinated V". The ESR and optical data are correlated using molecular orbital (MO) theory. The composition of the flux-grown single crystals is analysed and discussed.

when power systems are expanded and connected together with weak tie lines, the low-frequency oscillations are increased and the stability margin of the power system decreases. therefore, when designing the transmission system to be used, it is necessary to maintain the dynamic stability of the power system, and to make sure to have the most possible stability margin. sssc is a facts device con...

in this paper we investigate a new notion of bases in hilbert spaces and similarto fusion frame theory we introduce fusion bases theory in hilbert spaces. we also introducea new denition of fusion dual sequence associated with a fusion basis and show that theoperators of a fusion dual sequence are continuous projections. next we dene the fusionbiorthogonal sequence, bessel fusion basis, hilbe...