BACKGROUND The purpose of this study was to evaluate the frequencies of various types of orbital lesions seen at a comprehensive cancer center in the United States. METHODS In this retrospective case series, we reviewed the medical records of 268 consecutive patients referred to our orbital oncology service for evaluation of an orbital mass between November 1998 and February 2009. Each orbita...

The purpose of this rersearch is to analyze the effective application of particular earth orbits in dynamical modeling of relative motion problem between two spacecraft. One challenge in implementing these motions is maintaining the relations as it experiences orbital perturbations (zonal harmonics J2 and J3), most notably due to the Earth’s oblateness. Certain aspects of the orbital geometry c...

UNLABELLED The anatomical characterization of the orbitofrontal cortex in human is limited in literature instead of many functional and clinical studies involving it. OBJECTIVE Anatomically define the orbitofrontal region aiming to possible neurosurgical treatments and unify the scientific nomenclature as well. METHOD We analyze eighty four human hemispheres using a surgical microscope. The...

We investigate the collective behavior of orbital angular momentum in the spin ferromagnetic state of a Mott insulator with t(2g) orbital degeneracy. The frustrated nature of the interactions leads to an infinite degeneracy of classical states. Quantum effects select four distinct orbital orderings. Two of them have a quadrupolar order, while the other states show in addition weak orbital magne...

A gas of strongly interacting single-species (spinless) p-orbital fermionic atoms in 2D optical lattices is proposed and studied. Several interesting new features are found. In the Mott limit on a square lattice, the gas is found to be described effectively by an orbital exchange Hamiltonian equivalent to a pseudospin-1/2 XXZ model. For a triangular, honeycomb, or kagome lattice, the orbital ex...

The term blow-out fracture was co ined by Smith and Regan [1] to describe an orbital floor fracture caused by a very sudden increase in intraorbital pressure without concomitant fracture of the orbital rim . Most blow-out fractures involve the orbital floor. Less often the medial orbital wall is fractured either solely or in conjunction with a fracture of the floor [2]. Upward displacement frac...

Anthropometry refers to the measurements of the human individual to note the physical variation. The literature shows that there are significant differences in ocular and orbital morphometry among individuals of different age, sex and ethnicity. Sixty-four intact skulls i.e. 128 orbits were measured using digital Vernier caliper. Orbital height (OH), Orbital width (OW), Biorbital distance (BOD)...

THIS REVIEW OF ORBITAL FRACTURES HAS THREE GOALS: 1) to understand the clinically relevant orbital anatomy with regard to periorbital trauma and orbital fractures, 2) to explain how to assess and examine a patient after periorbital trauma, and 3) to understand the medical and surgical management of orbital fractures. The article aims to summarize the evaluation and management of commonly encoun...

we have performed a density functional theory investigation on the structural and electronic properties of pristine and nitrogen-doped tio2 anatase nanoparticles as the adsorbents for removal and degradation of hydrazine molecules in the environment. we have presented the most stable adsorption configurations and examined the interaction of hydrazine molecule with these doped and undoped nanopa...

purpose: to compare the rate of fibrovascular ingrowth between primary and secondary orbital implants at varying time intervals after implantation. methods: we prospectively compared the rate of fibrovascular ingrowth between primary and secondary implants by mri and scinitigraphy in patients who underwent orbital implant surgery, 6 months after the operation. results: overall 103 patients unde...