Purpose: To assess the computed tomography (CT) and magnetic resonance imaging (MRI) features of Langerhans cell histiocytosis (LCH) in calvaria. Methods: The CT and MRI manifestations of 12 pathologically proven cases of solitary LCH involving the cranial bone were retrospectively analyzed. Assessed image features included: Location, size (soft-tissue mass and bone destruction), shape (soft-ti...

The major differential diagnoses of epilepsy associated with small solitary lesion are tuberculous or cysticercus granuloma which are enhanced in CT and/or MRI study. We report of a 47-year-old man with intractable temporal lobe epilepsy as the presenting feature of a solitary intrahippocampal calcified mass without enhancement, which turned out to be a Taenia solium cysticercus. There was no a...

Electron capture processes are important in the search for new physics. In this context, a high capture rate is desired. We investigate the possibility of enhancing the electron capture rate by irradiating laser beam to ”atom”. The possibility of such enhancement can be understood as a consequence of an enhancement of the electron wave function at the origin, Ψ(0), through an increased effectiv...

background evaluation of the craniofacial bones is the oldest method to measure the facial proportion ratio in orthodontics. objectives the purpose of this study was to evaluate the effect of emboss enhancement on the reliability of landmark identification in digital lateral cephalometric images. materials and methods ten digital lateral cephalograms were selected from the archive of an oral an...

We consider the case of a quadrupole mass spectrometer (QMS) in which a static magnetic field is applied axially in the z-direction along the length of the mass filter. The theoretical approach assumed in the model is that the QMS contains hyperbolic rods as electrodes and that the magnetic field acts over the full length of the mass filter assembly. Initial experimental results with argon and ...

We assume that the mass matrix of active neutrinos has hierarchical form with small mixings, similar to quark mass matrix. We show that the large mixings between ν µ and ν τ as well as between ν e and certain combination of ν µ and ν τ required by the present data can appear due to the presence of a sterile neutrino state. Two realizations of this possibility are considered: (i) Large flavor mi...

Mass spectral characterlzatlon of the Intact chromophore of organic dyestuffs, frequently prepared as salts, Is relatlvely faclle wlth desorptlon lonlratlon. The mass spectra obtalned, however, may show the presence of chemlcally altered forms of the chromophore. Comparlson of the flsslon fragment (FF) and llquld secondary Ion mass spectra (Ilquld SIMS) of a serles of dyes reveals enhanced (C +...

An empirical correlation, based on conventional forms, has been developed to represent the oxygen mass transfer coefficient as a function of operating conditions and organic fraction in two-phase, aqueous-organic dispersions. Such dispersions are characteristic of two-phase partitioning bioreactors, which have found increasing application for the biodegradation of toxic substrates. In this work...

We consider the " standard " spectrum of the active neutrinos (characterized by strong mass hierarchy and small mixing) with additional sterile neutrino, ν s. The sterile neutrino mixes strongly with the muon neutrino, so that ν µ ↔ ν s oscillations solve the atmospheric neutrino problem. We show that the parametric enhancement of the ν µ ↔ ν s oscillations occurs for the high energy atmospheri...

We consider the " standard " spectrum of the active neutrinos (characterized by strong mass hierarchy and small mixing) with additional sterile neutrino, ν s , which mixes strongly with muon neutrino, so that ν µ ↔ ν s oscillations solve the atmospheric neutrino problem. The parametric enhancement of the ν µ ↔ ν s oscillations occurs for the high energy atmospheric neutrinos which cross the cor...