At present, wave measurements in the space plasma are one of the most important ways of studying plasma processes resulting from interaction between solar wind and the geomagnetosphere. Wave measurements made aboard some space vehicles usually included the measurement of electric and magnetic field spectra (by one component) within a range of frequencies from 5 Hz to plasma frequency of tens of kHz.
The article covers interpretation of the content of EU citizenship in the light of judgment of the Court of Justice of EU, C-34/09 Ruiz Zambrano v ONEm. This decision expands horizons of EU citizenship due to the term‘ the genuine enjoyment of the substance of rights conferred by the status of EU citizenship’. A refusal to grant a right of residence to a third country national with dependent minor children in the Member State where those children are nationals and reside, and also a refusal to grant such a person a work permit, has such an effect of depriving EU citizens of their rights. This was applied even that cross-border element was missing. Despite that the destiny and status of dependent children seem to play major role in the course of the case and maybe only situations of care will be granted in the future the same treatment of the Court like Zambrano. The Court created timeless basis for more uniform shape of Union Citizenship, free from reverse discrimination, to which may return later in its case law. The article compared also the content of Zambrano with later case of C-434/09 McCarthy.
We consider the homogeneous time-dependent Oseen system in the whole space R 3 . The initial data is assumed to behave as O(|x| −1−ε ), and its gradient as O(|x| −3/2−ε ), when |x| tends to infinity, where ε is a fixed positive number. Then we show that the velocity u decays according to the equation |u(x, t)| = O(|x| −1 ), and its spatial gradient ∇xu decreases with the rate |x| −3/2 , for |x| tending to infinity, uniformly with respect to the time variable t. Since these decay rates are optimal even in the stationary case, they should also be the best possible in the evolutionary case considered in this article. We also treat the case ε = 0. Then the preceding decay rates of u remain valid, but they are no longer uniform with respect to t.
The local well-posedness for the Cauchy problem of the liquid crystals system in the critical Besov space is established by using the heat semigroup theory and the Littlewood-Paley theory. The global well-posedness for the system is obtained with small initial datum by using the fixed point theorem. The blow-up results for strong solutions to the system are also analysed., Sen Ming, Han Yang, Zili Chen, Ls Yong., and Obsahuje bibliografii
The case study of a ground steps creation due to underground mining in Upper Silesia Basin, where for many years was conducted intensive hard coal extraction has been presented in this paper. This type of linear discontinuous deformations is considered as an important threat to the surface building constructions and elements of underground technical infrastructure. This threat is even more important, that presently still we do not have methods for predictions of such phenomena, and protection of building constructions against such damages is difficult, if not impossible. On the basis of the analyzes results shown in the paper, the following factors were pointed, that favor the formation of mining-induced ground steps: the presence of fault outcrops in the vicinity of extraction fields, multiple extraction in several coal seams led to the same border and large values of tensile horizontal strain., Piotr Strzałkowski and Roman Ścigała., and Obsahuje bibliografické odkazy
Prediction of the final transferred fat volume is essential for the success of fat grafting, but remains elusive. Between 20 and 80 % of the initial transplanted volume can be creabsorbed. Although graft survival has many determinants, CD34+ progenitor cells from the vascular stroma of adipose tissue play a central role by promoting growth of blood vessels and adipocytes. We aimed to verify the hypothesis that a higher proportion of total CD34+ cells in the transplant is associated with better preservation of the graft volume. Human lipoaspirates from 16 patients were processed by centrifugation and two grafts per donor were subcutaneously injected into 32 nude mice in 1 ml volumes in the right upper flank area. The volume of each graft was measured using a preclinical MRI scanner immediately after grafting and at three months. The percentage of CD34+ cells in the graft before implantation was determined by flow cytometry. The final graft volume at three months after implantation directly correlated with the percentage of CD34+ cells in the grafted material (r = 0.637, P = 0.019). The minimum retention of the fat graft was 28 % and the maximum retention was 81 %, with an average of 54 %. Our study found that fat retention after fat transfer directly correlated with the fraction of CD34+ cells in the graft. The simple and fast determination of the CD34+ cell percentage on site can help predicting outcomes of fat transplantation. and Corresponding authors: Ondřej Měšťák, Luděk Šefc
We compute the central heights of the full stability groups S of ascending series and of descending series of subspaces in vector spaces over fields and division rings. The aim is to develop at least partial right analogues of results on left Engel elements and related nilpotent radicals in such S proved recently by Casolo & Puglisi, by Traustason and by the current author. Perhaps surprisingly, while there is an absolute bound on these central heights for descending series, for ascending series the central height can be any ordinal number., Bertram A. F. Wehrfritz., and Obsahuje seznam literatury
We discuss and criticise the contention of Colombo (2012) that the central-marginal model does not apply to three species of chromosomally polymorphic acridid grasshoppers, and that chromosomal clines in these species are a consequence of temperature gradients. We also discuss Colombo’s interpretation of our own results on the South American melanopline grasshopper, Dichroplus pratensis Bruner., Claudio J. Bidau, Dardo A. Martí., and Obsahuje seznam literatury
Affordable housing is the biggest challenge being faced by the city of Mumbai, which styles itself as an emerging Global Financial Centre. The city has the image of being home to a stark dualism, with slums abutting modern skyscrapers. Over the years, adequate policy attention has been given to slums and with the implementation of the Slum Rehabilitation Scheme slum dwellers are being provided with housing in multi-storey buildings and are being granted tenancy rights to the dwellings. However, an emerging area of concern is the large housing stock that is non-slum but is old and dilapidated. The collapse of an old and dilapidated building in Dongri in July 2019 that killed twelve people and the one at Bhendi Bazaar in 2017 that killed thirty-three has brought this problem into the mainstream and new policies have been initiated to address the problem. Implementing these policies seems to be a challenge, and this is the result of different factors. This article looks at the housing problem in Mumbai from a policy perspective and analyses the implementation challenges of the new policy aimed at redeveloping the old and dilapidated housing stock.