Help for poisoning with sedative-hypnotic drugs (means)

The article discusses help in case of poisoning with sedative-hypnotic drugs, diagnosis and clinical manifestations of poisoning when they are taken.В статье рассматривается помощь при отравлении седативно-гипнотическими средствами на примере бензодиазепина, диагностика и клинические проявления отравления при их прием

The Generalized Star Product and the Factorization of Scattering Matrices on Graphs

In this article we continue our analysis of Schr\"odinger operators on arbitrary graphs given as certain Laplace operators. In the present paper we give the proof of the composition rule for the scattering matrices. This composition rule gives the scattering matrix of a graph as a generalized star product of the scattering matrices corresponding to its subgraphs. We perform a detailed analysis of the generalized star product for arbitrary unitary matrices. The relation to the theory of transfer matrices is also discussed

Wavefunctions, Green's functions and expectation values in terms of spectral determinants

We derive semiclassical approximations for wavefunctions, Green's functions and expectation values for classically chaotic quantum systems. Our method consists of applying singular and regular perturbations to quantum Hamiltonians. The wavefunctions, Green's functions and expectation values of the unperturbed Hamiltonian are expressed in terms of the spectral determinant of the perturbed Hamiltonian. Semiclassical resummation methods for spectral determinants are applied and yield approximations in terms of a finite number of classical trajectories. The final formulas have a simple form. In contrast to Poincare surface of section methods, the resummation is done in terms of the periods of the trajectories.Comment: 18 pages, no figure

Complications of tooth extraction surgery

The aim of the study is to analyze the opinion of dental surgeons on the complications of tooth extraction surgery in order to reduce the number of complications.Целью исследования является анализ мнения врачей стоматологов-хирургов по вопросу осложнений операции удаления зуба с целью снижения количества осложнений