227 research outputs found
The role in ensuring peripheral blood flow as a function of balance for older women
Age-related changes in the function of equilibrium are characterized by increasing of projected area of the center of pressure and the velocity of the transference of center of pressure. The changes in peripheral blood flow have the influence on the maintenance of equilibrium which affects mainly the frontal plane. Changes in the regulation of vascular tone in a part of the peripheral blood flow affect the performance of dynamic equilibrium and, as result, reduction of the integral index of balance function
Disorders in the functional state of the body in shift workers and its correction under the conditions of the North
Shift workers from oil companies operating in the northern regions of Siberia were examined to develop signs of deterioration of the functional state of the body, such as a decrease in the ventilatory function of the lungs, a decrease in the adaptive reserve of the circulatory system, the prevalence of sympathetic tone in the autonomic nervous system, and thyroid imbalances, and all symptoms collectively reflect disorders in the physiological adaptation processes. The reported disorders are aggravated in the working shift period, but the disturbed functions fail to be recovered for the intershift rest period. A set of rehabilitation measures dur ing the intershift period helps to reduce the signs of tension in the physiological adaptation, which is mani fested in an improved functional state, a normalized adaptive potential, and a decrease in the sympathetic tone
Postural control and social well-being of elderly women
To do this, in the course of phylogeny developed a very complex, but at the same time, an effective system of automatic fine regulation of body position - postural control system. At the present time there is a problem quite early start weakening postural balance. Diagnosis of the level of postural stability in older people will determine what is the cause of malfunction of the postural control system, and, consequently, increasing the risk of falls. Age-related changes in the function of equilibrium are characterized by increasing of projected area of the center of pressure and the velocity of the transference of center of pressure. The changes in peripheral blood flow have the influence on the maintenance of equilibrium affects mainly the frontal plane. Changes in the regulation of vascular tone in a part of the peripheral blood flow affect the performance of dynamic equilibrium and, as result, reduction of the integral index of balance function
Incomplete Protection of the Surface Weyl Cones of the Kondo Insulator SmB: Spin Exciton Scattering
The compound SmB is a Kondo Insulator, where the lowest-energy bulk
electronic excitations are spin excitons. It also has surface states that are
subjected to strong spin-orbit coupling. It has been suggested that SmB is
also a topological insulator. Here we show that, despite the absence of
time-reversal symmetry breaking and the presence of strong spin-orbit coupling,
the chiral spin texture of the Weyl cone is not completely protected. In
particular, we show that the spin-exciton mediated scattering produces features
in the surface electronic spectrum at energies separated from the surface Fermi
energy by the spin-exciton energy. Despite the features being far removed from
the surface Fermi energy, they are extremely temperature dependent. The
temperature variation occurs over a characteristic scale determined by the
dispersion of the spin exciton. The structures may be observed by electron
spectroscopy at low temperatures.Comment: 7 pages, 5 figure
Small-x QCD Calculations with a Biased Ensemble
In this dissertation, I will argue that we can study functional fluctuations in unintegrated gluon distributions, in the MV model as well as JIMWLK, using reweighting techniques, which will allow me to calculate QCD observables with biased ensembles . This technique will enable me to study rare functional configurations of the gluon distributions, that might have been selected for in, for example, the centrality criteria used by the ATLAS and ALICE collaborations. After a review of these techniques, as well as a review of QCD physics at high energy in general, I will use biased ensembles to compute observables in two examples.
First, I’ll look at the nuclear modification factor in pA/pp collisions. Recent experimental data suggests that the nuclear modification factor should increase with centrality. I show (based on a paper written with collaborators Adrian Dumitru and Vladimir Skokov) that a functional bias on gluon distributions does, indeed, bare this out.
My second application will use biased ensembles to compute cross sections and azimuthal harmonics in double inclusive gluon production via “Glasma graphs”. I use three types of biases (an increase in gluons multiplicity in some momentum range by a constant factor; by a factor that is momentum dependent; and by a factor that is anisotropic) to show that biased ensembles introduce interesting and diverse changes in the angular anisotropies. Along the way, I\u27ll stress that one should always remember how likely each bias that is being studied is, in the original ensemble (which, after all, is what these techniques are studying).
My hope for this work is that, not only will it provide an additional way of interpreting experimental results using saturation physics, but that it will help the field in some way, as it looks onward to, for example, the EIC expansion at Brookhaven
Electrophysiological neuromuscular systemic characteristics of athletes in power training
This study is based on the analysis of electrophysiological characteristics describing the neuromuscular system of athletes during their training sessions, depending on their specialization and level of sport skills. It has been shown that the physiological changes securing the perfection of strength training in weightlifting athletes are mainly concentrated in the peripheral part of their neuromuscular system, namely, at the level of muscles themselves and neuromuscular junctions, and reflected in the electromyogram characteristics as arbitrary movements and M response parameters. At the same time, physiological rearrangements in combat athletes touch the peripheral mechanisms and the central component in the regulation of motor activity and are reflected in the parameters of visual and somatosensory evoked brain potentials. The results disclose an entire set of new important approaches to the functioning of different compartments in the nervous system and the neuromuscular apparatus in athletes of different specializations. They can serve as the basis for the development of practical recommendations on the organization of sports-specialized selection at different stages of athletic perfection, as well as for the physiological support of training process and methods of operating control
Radiation measurements in the new tandem accelerator FEL
The measurements of both spontaneous and stimulated emissions of radiation in
the newly configured Israeli EA-FEL are made for the first time. The radiation
at the W-band was measured and characterized. The results match the predictions
of our earlier theoretical modeling and calculations.Comment: 4 pages, 3 figures, FEL 2003 Conference repor
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