THE EFFECTIVENESS OF BIOFEEDBACK IN THE TREATMENT OF DIFFICULT-TO-CONTROL ARTERIAL HYPERTENSION

Review is devoted to difficult-to-control arterial hypertension and possibilities of biofeedback as additional method to standard antihypertensive therapy. Reasons and current approaches to therapy of difficult-to-control arterial hypertension are discussed. Particularities of biofeedback therapy and variants of the technical implementation of the different loops are described. Recent publications that contain data of the effectiveness of biofeedback among hypertensive patients are given. Relevance of this problem among patients with difficult-to-control arterial hypertension is proved

Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4 revisited by small-angle neutron scattering

We performed small-angle neutron scattering (SANS) measurements on the helimagnetic spinel compound ZnCr2Se4. The ground state of this material is a multi-domain spin-spiral phase, which undergoes domain selection in a magnetic field and reportedly exhibits a transition to a proposed spin-nematic phase at higher fields. We observed a continuous change in the magnetic structure as a function of field and temperature, as well as a weak discontinuous jump in the spiral pitch across the domain-selection transition upon increasing field. From our SANS results we have established the absence of any long-range magnetic order in the high-field (spin-nematic) phase. We also found that all the observed phase transitions are surprisingly isotropic with respect to the field direction

DINAMICS OF BLOOD PRESSURE AND HEART RATE VARIABILITY PARAMETERS DURING BIOFEEDBACK IN LOOP OF HEART RATE VARIABILITY AND PACED BREATHING IN PATIENTS WITH DIFFICULT-TO-CONTROL ARTERIAL HYPERTENSION ON THE BACKGROUND OF DRUG

60 patients with difficult-to-control arterial hypertension (DTCAH) were examined (average age is 59.0 ± 9.4 years). The changes in blood pressure (BP) and parameters of heart rate variability (HRV) during biofeedback sessions (BFB) in loop of paced breathing (PB) in patients with DTCAH on the background of standard drug therapy were assessed. It has been established that the systematic sessions of BFB in loop of PB in patients with DTCAH allow to increase the total power of the HRV spectrum, VLF and HF, and also improve control of BP. BFB in loop of PB can be recommended as an adjunctive method to the standard drug therapy for patients with DTCAH

A Proactive Conduct of an Enterprise in the Current Conditions of Economic Management

The article analyzes the essence and content of proactivity and proactive conduct of enterprise. In conditions of limited solvent demand, fierce competition and constant increase in the production volume of various goods and services, the company’s management must use qualitatively new approaches to management to ensure stable functioning and efficient development of the company. One such approach is proactive management. The use of the conception of proactive management as real time by managers of organizations is the key to the survival of their enterprise today, when «business at the speed of thought» has ceased to be the privilege of individual companies. The achievements of foreign and domestic scientists in the sphere of proactive conduct of enterprise are outlined and the main directions for further research are defined. It is determined that an important factor influencing the employee’s proactive conduct is the own factor, which includes three aspects: individual trait, individual motivation, knowledge and abilities. International companies with proactive conduct are examined and it is identified how this conduct manifests itself today. Domestic enterprises that promote themselves as companies with proactive conduct are selected and their main development strategies are emphasized. Proactive conduct is closely related to the individual characteristics of a person. Existing studies has found that individual characteristics mainly include proactive personality, sense of responsibility, neuroticism, purposefulness, and other factors that influence proactive conduct. The main advantages and disadvantages of proactive conduct of enterprise are determined. It is studied what actions of management will be able to show proactivity in employees and help to form a single competitive team

Latest technologies in criminal investigation (testing of foreign practices in Ukraine)

The aim of the article was to identify a set of innovative technologies in the field of investigation of crimes that can be tested in Ukraine. The leading research methods were the method of comparison, observation and comparative method. The activities of law enforcement agencies in the field of combating crime and ensuring the introduction of innovative technologies in the investigation of crimes were analyzed in the course of this research. It is substantiated that Ukraine is going through high-quality reform and legislative innovations, taking into account the best world practices. It is concluded that it is necessary to improve new sections of forensic science — digital forensics and develop a Strategy for investigating crimes in the digital age. These actions will promote the integration of the latest advances in science and technology into criminology, the development of certain theoretical positions, and optimize the detection and investigation of crimes. Further research will be based on the gradual introduction of positive European experience in this area

Pseudo-Goldstone magnons in the frustrated S=3/2 Heisenberg helimagnet ZnCr2Se4 with a pyrochlore magnetic sublattice

Low-energy spin excitations in any long-range ordered magnetic system in the absence of magnetocrystalline anisotropy are gapless Goldstone modes emanating from the ordering wave vectors. In helimagnets, these modes hybridize into the so-called helimagnon excitations. Here we employ neutron spectroscopy supported by theoretical calculations to investigate the magnetic excitation spectrum of the isotropic Heisenberg helimagnet ZnCr2Se4 with a cubic spinel structure, in which spin-3/2 magnetic Cr3+ ions are arranged in a geometrically frustrated pyrochlore sublattice. Apart from the conventional Goldstone mode emanating from the (0 0 q) ordering vector, low-energy magnetic excitations in the single-domain proper-screw spiral phase show soft helimagnon modes with a small energy gap of ~0.17 meV, emerging from two orthogonal wave vectors (q 0 0) and (0 q 0) where no magnetic Bragg peaks are present. We term them pseudo-Goldstone magnons, as they appear gapless within linear spin-wave theory and only acquire a finite gap due to higher-order quantum-fluctuation corrections. Our results are likely universal for a broad class of symmetric helimagnets, opening up a new way of studying weak magnon-magnon interactions with accessible spectroscopic methods.Comment: V3: Final version to be published in Phys. Rev.