Verification of CPT-invariance of QED bound states for the production of muonium or antimuonium in scattering of electrons or positrons by nuclei

A possibility of a verification of CPT-invariance of QED for bound states by example of muonium or antimuonium produced in reactions of scattering of electrons or positrons by nuclei is considered. The number of events of the muonium production is estimated for contemporary accelerators. The method of the detection of muonium by measuring of oscillations of the decay curve caused by the interference between the ground and excited state of muonium is suggested. The admixture of the excited muonium to the final state is calculated.Comment: 7 pages, 3 figures, Latex, published in JETP 74, 196 (2001), corrected mistypes in eqs. (2.2), (2.4), (2.7

Isomorphism Problems for the Baire Function Spaces of Topological Spaces

Let a compact Hausdorff space X contain a non-empty perfect subset. If α < β and β is a countable ordinal, then the Banach space Bα (X) of all bounded real-valued functions of Baire class α on X is a proper subspace of the Banach space Bβ (X). In this paper it is shown that: 1. Bα (X) has a representation as C(bα X), where bα X is a compactification of the space P X – the underlying set of X in the Baire topology generated by the Gδ -sets in X. 2. If 1 ≤ α < β ≤ Ω, where Ω is the first uncountable ordinal number, then Bα (X) is uncomplemented as a closed subspace of Bβ (X). These assertions for X = [0, 1] were proved by W. G. Bade [4] and in the case when X contains an uncountable compact metrizable space – by F.K.Dashiell [9]. Our argumentation is one non-metrizable modification of both Bade’s and Dashiell’s methods

Functionally Countable Spaces and Baire Functions

The concept of the distinguished sets is applied to the investigation of the functionally countable spaces. It is proved that every Baire function on a functionally countable space has a countable image. This is a positive answer to a question of R. Levy and W. D. Rice

Feather-Processing Wastewater: Composition, Infl uence on the Natural Water Objects and Decontamination Technologies

Poultry farming and production is one of very important branches of the food and food processing industry, which produces important foodstuffs, semi-fi nished products and by-products for further processing. Intense processing of the poultry products results in a massive formation of the heavily polluted wastewaters containing many hazardous pollutants. This problem is very acute for many countries where this branch is quick-growing and being under extended investigation of various decontamination methods of the poultry processing wastewaters. Poultry feather is not involved in any food processing industry but can be used as an adsorbent or fi ller for some clothes and bed clothes. Relevant industrial feather-processing stages also produce some contaminated wastewaters and a problem of their decontamination is still beyond systematic analysis and investigation. This paper deals with analysis of the poultry feather-processing wastewaters composition and experimental investigation of various methods and technologies of their decontamination. Iron chloride combined with polyacrylamide ensured the best wastewater cleaning/fl occulation activity and a combined wastewater treatment scheme with primary cleaning/fl occulation, secondary complex biotreatment and tertiary sand-fi ltration has been proposed in order to reach a required decontamination depth. This technology proves the wastewater quality, which complies with the offi cially set limits

Impacto das IAS/IFRS nas contas dos bancos do sistema bancário português

Dissertação de mest., Contabilidade, Faculdade de Economia, Universidade do Algarve, 2008A partir de 1 de Janeiro de 2005 as instituições financeiras com valores mobiliários admitidos à cotação em mercados regulamentados da União Europeia adoptaram as normas internacionais de contabilidade na elaboração das suas demonstrações financeiras, em base consolidada. Neste trabalho, efectuou-se a análise do impacto quantitativo e qualitativo da primeira adopção das normas do IASB pelas instituições financeiras portuguesas. Pretendeu-se identificar os assuntos e as rubricas das demonstrações financeiras com maior impacto no capital próprio e resultado líquido em resultado da conversão para as normas do IASB, bem como analisar o impacto das novas regras contabilísticas nos principais indicadores de performance. Utilizou-se a técnica de análise comparativa de conteúdo aplicada às demonstrações financeiras dos bancos com apresentação descritiva de dados e análise de clusters. Os resultados evidenciaram que a área de pensões de reforma e outros benefícios dos empregados, instrumentos financeiros, “goodwill”, consolidação de “special purpose entities”, activos intangíveis e impostos diferidos são os assuntos e as rubricas das demonstrações financeiras com maior impacto no capital próprio e resultado líquido. O impacto da adopção das IFRS reflectiu-se na diminuição dos capitais próprios e resultados líquidos na maioria das instituições financeiras. Foi possível confirmar, através de análise de clusters, não só diferente segmentação dos bancos, correspondente às alterações ocorridas nos indicadores de performance, em resultado da adopção das IFRS, como também identificar o indicador rendibilidade de capital próprio com maiores alterações ao nível de todas as instituições financeiras