СПОСОБИ ПРОВЕДЕННЯ РЯТУВАЛЬНИХ РОБІТ ПРИ ПОРЯТУНКУ ПОТЕРПІЛОГО, ЯКИЙ ЗАВИС НА ВИСОТІ

Introduction. Declared on the rapid development and pace of construction, which increases the need for high-risk work, in particular: climbing works and works at height using a special climbing order. The types of work during which there is a risk of accidents are presented. The dynamics of events that led to fatal accidents according to the statistics of the State Labor Service of Ukraine is highlighted. The relevance of the justification for the choice of climbing equipment for the rescuer, who will work to rescue workers, depending on the height. Purpose. Justification for the choice of climbing equipment for a rescuer who is carrying out work to rescue a worker who is suspended at a height. Development of a clear algorithm of actions of the rescuer-climber.Research methods. Analysis of current norms and rules on how to conduct rescue operations in rescuing a victim who hung at a height. Identify the main shortcomings that exist today in the conduct of rescue operations at height. An analysis of current norms and rules shows that the requirements for rescuing workers suspended at height are presented in general and without a clear algorithm for action.Presenting main material. To rescue a victim at risk of falling from a height, a rescue plan must be developed for a specific area or structure, taking into account all the features of rescue when working at height. The rescue plan should include detailed procedures for rescue and self-rescue methods, equipment used, training requirements, specialized training for rescuers, etc. Training of rescuers-climbers should be carried out with a certain frequency and a typical training plan. A list of rescue equipment at a height to rescue a suspended worker is recommended.Conclusion. A clear algorithm of actions of the rescuer-climber is offered at the descent of the rescuer to the victim on the main rope of the victim; the descent of the rescuer to the victim on a safety rope of the victim; lifting the rescuer to the victim on the main rope of the victim; lifting the rescuer to the victim on the victim’s safety rope. Specified equipment is recommended to the rescuer for rescue work at height.Вступ. Наголошено на стрімкому розвитку та темпах будівництва, що збільшує потребу у роботах підвищеної небезпеки, зокрема: верхолазних роботах та роботах на висоті з використанням спеціального верхолазного спорядження. Представлено види робіт під час виконання яких існує загроза нещасних випадків. Висвітлено динаміку подій, що призвела до нещасних випадків зі смертельним наслідком за статистичними даними Державної служби України з питань праці. Представлено актуальність щодо обґрунтування вибору верхолазного спорядження для рятувальника, який проводить роботи з порятунку робітника, що завис на висоті. Мета. Обґрунтування вибору верхолазного спорядження для рятувальника, який проводить роботи з порятунку робітника, котрий завис на висоті. Розроблення чіткого алгоритму дій рятувальника-верхолаза. Методи дослідження. Аналіз чинних норм та правил щодо способів проведення рятувальних робіт при порятунку потерпілого, який завис на висоті. Визначення основних недоліків, що існують сьогодні при прове-денні рятувальних робіт на висоті. Аналізом чинних норм та правил встановлено, що вимоги до рятування завислих на висоті людей представлено в загальному вигляді та без чіткого алгоритму виконання дій. Виклад основного матеріалу. Для порятунку потерпілого, що піддається ризику падіння з висоти, пови-нен бути розроблений план порятунку для конкретної місцевості чи споруди з врахуванням усіх особливостей порятунку при роботі персоналу на висоті. План порятунку повинен містити детальні процедури щодо методів рятування та саморятування, використовуване обладнання, вимоги до підготовки, спеціалізоване навчання для рятувальників тощо. Навчання рятувальників-верхолазів має проводитись з визначеною періодичністю та типовим планом підготовки. Рекомендовано перелік спорядження для проведення рятувальних робіт на висоті для порятунку завислого потерпілого. Висновок. Запропоновано чіткий алгоритм дій рятувальника-верхолаза при: спуску рятувальника до потерпілого по основній мотузці потерпілого; спуску рятувальника до потерпілого по страхувальній мотузці потерпілого; підйомі рятувальника до потерпілого по основній мотузці потерпілого; підйомі рятувальника до потерпілого по страхувальній мотузці потерпілого. Рекомендовано конкретне спорядження рятувальнику для проведення рятувальних робіт на висоті

The pulsating hot subdwarf Balloon 090100001: results of the 2005 multisite campaign

We present the results of a multisite photometric campaign on the pulsating sdB star Balloon 090100001. The star is one of the two known hybrid hot subdwarfs with both long- and short-period oscillations. The campaign involved eight telescopes with three obtaining UBVR data, four B-band data, and one Stromgren uvby photometry. The campaign covered 48 nights, providing a temporal resolution of 0.36microHz with a detection threshold of about 0.2mmag in B-filter data. Balloon 090100001 has the richest pulsation spectrum of any known pulsating subdwarf B star and our analysis detected 114 frequencies including 97 independent and 17 combination ones. The strongest mode (f_1) in the 2.8mHz region is most likely radial while the remaining ones in this region form two nearly symmetric multiplets: a triplet and quintuplet, attributed to rotationally split \ell=1 and 2 modes, respectively. We find clear increases of splitting in both multiplets between the 2004 and 2005 observing campaigns, amounting to 15% on average. The observed splittings imply that the rotational rate in Bal09 depends on stellar latitude and is the fastest on the equator. We use a small grid of models to constrain the main mode (f_1), which most likely represents the radial fundamental pulsation. The groups of p-mode frequencies appear to lie in the vicinity of consecutive radial overtones, up to the third one. Despite the large number of g-mode frequencies observed, we failed to identify them, most likely because of the disruption of asymptotic behaviour by mode trapping. The observed frequencies were not, however, fully exploited in terms of seismic analysis which should be done in the future with a larger grid of reliable evolutionary models of hot subdwarfs.Comment: accepted for publication in MNRA

The XXL Survey VII: A supercluster of galaxies at z=0.43

The XXL Survey is the largest homogeneous and contiguous survey carried out with XMM-Newton. Covering an area of 50 square degrees distributed over two fields, it primarily investigates the large-scale structures of the Universe using the distribution of galaxy clusters and active galactic nuclei as tracers of the matter distribution. Given its depth and sky coverage, XXL is particularly suited to systematically unveiling the clustering of X-ray clusters and to identifying superstructures in a homogeneous X-ray sample down to the typical mass scale of a local massive cluster. A friends-of-friends algorithm in three-dimensional physical space was run to identify large-scale structures. In this paper we report the discovery of the highest redshift supercluster of galaxies found in the XXL Survey. We describe the X-ray properties of the clusters members of the structure and the optical follow-up. The newly discovered supercluster is composed of six clusters of galaxies at a median redshift z around 0.43 and distributed across approximately 30 by 15 arc minutes (10 by 5 Mpc on sky) on the sky. This structure is very compact with all the clusters residing in one XMM pointing; for this reason this is the first supercluster discovered with the XXL Survey. Spectroscopic follow-up with WHT (William Herschel Telescope) and NTT (New Technology Telescope) confirmed a median redshift of z = 0.43. An estimate of the X-ray mass and luminosity of this supercluster and of its total gas mass put XLSSC-e at the average mass range of superclusters; its appearance, with two members of equal size, is quite unusual with respect to other superclusters and provides a unique view of the formation process of a massive structure.Comment: A&A, accepted; special XXL issu

Resolving the pulsations of the subdwarf B star KPD 2109+4401

We present the results of extensive time series photometry of the pulsating subdwarf B star KPD 2109+4401. Our data set consists of 29 data runs with a total length of 182.6 hours over 31 days, collected at five observatories in 2004. These data are comprised of high signal-to-noise observations acquired with larger telescopes and wider time coverage observations obtained with smaller telescopes. They are sufficient to resolve the pulsation structure to 0.4 $\mu$Hz and are the most extensive data set for this star to date. With these data, we identify eight pulsation frequencies extending from 4701 to 5481 $\mu$Hz, corresponding to periods of 182 to 213 s. The pulsation frequencies and their amplitudes are examined over several time-scales with some frequencies showing amplitude variability.Comment: 8 pages, 4 figures, 5 tables; Accepted for publication in MNRA

Multiphase segregation and metal-insulator transition in single crystal La(5/8-y)Pr(y)Ca(3/8)MnO3

The insulator-metal transition in single crystal La(5/8-y)Pr(y)Ca(3/8)MnO3 with y=0.35 was studied using synchrotron x-ray diffraction, electric resistivity, magnetic susceptibility, and specific heat measurements. Despite the dramatic drop in the resistivity at the insulator-metal transition temperature Tmi, the charge-ordering (CO) peaks exhibit no anomaly at this temperature and continue to grow below Tmi. Our data suggest then, that in addition to the CO phase, another insulating phase is present below Tco. In this picture, the insulator-metal transition is due to the changes within this latter phase. The CO phase does not appear to play a major role in this transition. We propose that a percolation-like insulator-metal transition occurs via the growth of ferromagnetic metallic domains within the parts of the sample that do not exhibit charge ordering. Finally, we find that the low-temperature phase-separated state is unstable against x-ray irradiation, which destroys the CO phase at low temperatures.Comment: 9 pages, 9 encapsulated eps figure

A phenomenological equation of state for isospin asymmetric nuclear matter

A phenomenological momentum-independent (MID) model is constructed to describe the equation of state (EOS) for isospin asymmetric nuclear matter, especially the density dependence of the nuclear symmetry energy $E_{\text{\textrm{sym}}}(\rho)$. This model can reasonably describe the general properties of the EOS for symmetric nuclear matter and the symmetry energy predicted by both the sophisticated isospin and momentum dependent MDI model and the Skyrme-Hartree-Fock approach. We find that there exists a nicely linear correlation between $K_{\mathrm{sym}}$ and $L$ as well as between $J_{0}/K_{0}$ and $K_{0}$, where $L$ and $K_{\mathrm{sym}}$ represent, respectively, the slope and curvature parameters of the symmetry energy at the normal nuclear density $\rho_{0}$ while $K_{0}$ and $J_{0}$ are, respectively, the incompressibility and the third-order derivative parameter of symmetric nuclear matter at $\rho_{0}$. These correlations together with the empirical constraints on $K_{0}$, $L$ and $E_{\text{\textrm{sym}}}(\rho_{0})$ lead to an estimation of -477 MeV $\leq K_{\mathrm{sat,2}}\leq -241$ MeV for the second-order isospin asymmetry expansion coefficient for the incompressibility of asymmetric nuclear matter at the saturation point.Comment: 9 pages, 4 figures, contribution to Special Topic on Large-Scale Scientific Facilities (LSSF) in Science in China Series G: Physics, Mechanics & Astronom

Superscaling in inclusive electron-nucleus scattering

We investigate the degree to which the scaling functions $F(\psi')$ derived from cross sections for inclusive electron-nucleus quasi-elastic scattering define the same function for different nuclei. In the region where the scaling variable $\psi'< 0$, we find that this superscaling is experimentally realized to a high degree.Comment: Corrected previously mislabeled figures and cross references; 9 pages, 4 color figures, using BoxedEPS and REVTeX; email correspondence to [email protected]