Investigation of ZnO single crystals subjected to a high uniform magnetic field in the IR spectral range

Based on the experimental data obtained, we performed the theoretical investigation of the external reflectance coefficients of uniaxial optically anisotropic polar ZnO single crystals subjected to the action of a high uniform magnetic field that is parallel to the crystal axis С and the surface under the condition that E⊥B (the Voigt configuration, Fig. 1). For the first time, we have found the regions in the external reflection spectra of ZnO single crystals, where new oscillations appear which are due to the effect of a high uniform magnetic field. A possibility of solving the direct and inverse problems in such a case is demonstrated

First experimental results obtained using the highpower free electron laser at the siberian center for photochemical research

The first lasing near the wavelength of 140 µm was achieved in April 2003 using a high-power free electron laser (FEL) constructed at the Siberian Center for Photochemical Research. In this paper we briefly describe the design of the FEL driven by an accelerator–recuperator. Characteristics of the electron beam and terahertz laser radiation, obtained in the first experiments, are also presented in the paper.У Сибірському центрі фотохімічних досліджень навесні 2003 року отримана генерація випромінювання з довжиною хвилі 140 мкм на потужному лазері на вільних електронах (ЛВЕ). У роботі коротко описана конструкція ЛВЕ на базі прискорювача рекуператора і представлені результати вимірювання деяких параметрів електронного пучка і терагерцового випромінювання.В Сибирском центре фотохимических исследований весной 2003 года получена генерация излучения с длиной волны 140 мкм на мощном лазере на свободных электронах (ЛСЭ). В работе кратко описана конструкция ЛСЭ на базе ускорителя рекуператора и представлены результаты измерения некоторых параметров электронного пучка и терагерцового излучения

Anatomy and topography of the greater palatine foramen and the greater palatine canal and their significance in clinical practice

The results of morphology and topography of the greater palatine foramen and the greater palatine canal, and their practical application in clinical practice are presented. A systematic literature search was performed using PubMed, eLibrary, and HAC databases. Effective anesthesia in dentistry can be achieved using local anesthesia methods. The success of anesthesia in the posterolateral parts of the upper jaw depends on an accurate knowledge of the anatomy of this area. The review of the anatomy and morphology of the greater palatine foramen and the greater palatine canal as the target point for conducting analgesia, the anatomical structure of the neurovascular bundle passing in the greater palatine canal, the thickness of the mucous membrane of the palate in its various sections. Techniques of regional anesthesia through the greater palatine canal are considered. It is noted that when carrying out this type of anesthesia, it is necessary to take into account the length, shape of the greater palatine canal, the angle of inclination of the needle to the injection point, (taking into account individual characteristics and under the control of conebeam computed tomography). As a result of the analysis, it was found that the choice of a certain type of surgical intervention depends on the clinical situation. However, to date, neither in domestic nor in foreign literature there is no single point of view about the anatomy and morphology of the greater palatine foramen and the greater palatine canal, which emphasizes the extreme urgency of further research of these anatomical formations