531 research outputs found
A unification of the interactions and the diffractive processes
The transition of a number of hadronic process characteristics to a certain universal regime is interpreted as an indication to the early origination of the unification regime of the interactions
OBJECTIVE LAWS OF ROCK PRESSURE CHANGE IN FRONT OF ADVANCING LONGWALL FACE
To develop a method for determining the increase in stress above
advancing longwall face in conditions of Western Donbas mines
Dependence of the maximum surface subsidence from setup entry distance
Based on the subsidence data collected through a comprehensive subsidence monitoring program conducted over longwall in the Western Donbas coal mines, graphical model has been proposed to predict dynamic maximal subsidence in the Western Donbas coal basin
The mixing height in urban areas: comparative study for Copenhagen
International audienceThe urban boundary layer (UBL), in comparison with "rural" homogeneous atmospheric boundary layers, is characterised by greatly enhanced mixing, resulting from both the large surface roughness and increased surface heating, and by horizontal heterogeneity of the mixing height (MH) and other meteorological fields due to variations in surface roughness and heating from rural to central city areas. So, the UBL is considered as a specific case of the atmospheric boundary layer (ABL) over a non-homogeneous terrain. Therefore it is important to study how much the MH characteristics differ in urban and rural, marine or other more homogeneous areas. Most of the parameterisations of MH were developed for the conditions of a homogeneous terrain, so their applicability for urban conditions should be verified. Just a few authors suggested specific methods for MH determination in urban areas. In this paper the MH over urban, semi-urban, rural and marine areas of the Copenhagen metropolitan area is considered. Proceeding from the data from the Jægersborg radiosounding station measurement and analysis of different methods of the MH estimation, the peculiarities of the UBL and intercomparison of different MH estimation methods for urban and rural conditions are discussed. It is shown that the urban MH is considerably bigger for stably stratified (nocturnal) boundary layer cases in comparison with the "non-urban" MH. Daytime (usually the convective boundary layer) MH does not differ significatly in urban and "non-urban" sectors
Case Law of the ECtHR in the Legal System of the Russian Federation and the Challenges Faced by the Judicial Rulemaking
The article deals with the problem of determining the place and significance of international case law in the legal system of the Russian Federation. On the basis of analysis of international and domestic legal acts and judicial practice existing contradictions are identified and ways to resolve them are offered.
Methodology: The research uses general scientific and special cognitive techniques wherein legal analysis and synthesis, systemic, formal-legal, comparative-legal, historical-legal and dialectical methods are applied
Hysteresis of the contact angle of a meniscus inside a capillary with smooth, homogeneous solid walls
A theory of contact angle hysteresis of a
meniscus inside thin capillaries with smooth, homogeneous solid walls is developed in terms of surface forces (disjoining/
conjoining pressure isotherm) using a quasi-equilibrium approach. The disjoining
/conjoining pressure isotherm includes electrostatic, intermolecular, and structural components. The values of the static receding θr, advancing θa , and
equilibrium θe contact angles in thin capillaries were calculated on the basis of the shape of the disjoining/conjoining pressure isotherm. It was shown that both advancing and receding contact angles depend on the capillary radius. The suggested
mechanism of the contact angle hysteresis has a direct experimental confirmation: the process of receding is accompanied by the formation of thick β-films on the capillary walls. The effect of the transition from partial to complete wetting in thin capillaries is predicted and analyzed. This effect takes place in very thin capillaries, when the receding contact angle decreases to zero
Theoretical investigation of TbNi_{5-x}Cu_x optical properties
In this paper we present theoretical investigation of optical conductivity
for intermetallic TbNi_{5-x}Cu_x series. In the frame of LSDA+U calculations
electronic structure for x=0,1,2 and on top of that optical conductivities were
calculated. Disorder effects of Ni for Cu substitution on a level of LSDA+U
densities of states (DOS) were taken into account via averaging over all
possible Cu ion positions for given doping level x. Gradual suppression and
loosing of structure of optical conductivity at 2 eV together with simultaneous
intensity growth at 4 eV correspond to increase of Cu and decrease of Ni
content. As reported before [Knyazev et al., Optics and Spectroscopy 104, 360
(2008)] plasma frequency has non monotonic doping behaviour with maximum at
x=1. This behaviour is explained as competition between lowering of total
density of states on the Fermi level N(E_F) and growing of number of carriers.
Our theoretical results agree well with variety of recent experiments.Comment: 4 pages, 3 figure
Регіонарні блоки тулуба під УЗ-контролем
У даній статті ми постаралися описати техніку найбільш використовуваних та призначення провідникової анестезії нервів тулуба. Ці прості, але часто недооцінені блокади, якщо їх використовувати при відповідній операції, надають відмінну післяопераційну аналгезію, знижують потребу в опіоїдних анальгетиках, дозволяють пацієнту дихати і кашляти безболісно, а також сприяють ранній мобілізації
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