Oscillatory superconducting transition temperature in superconductor/antiferromagnet heterostructures

One of the most famous proximity effects at ferromagnet/superconductor (F/S) interfaces is partial conversion of singlet superconductivity to triplet pairing correlations. Due to the presence of macroscopic exchange field in the ferromagnet the Cooper pairs penetrating into the ferromagnet from the superconductor acquire a finite momentum there. The finite-momentum pairing manifests itself, in particular, as a nonmonotonic dependence of the critical temperature of the bilayer on the thickness of the F layer. Here we predict that despite the absence of the macroscopic exchange field the critical temperature of the antiferromagnet/superconductor (AF/S) bilayers also exhibit nonmonotonic (oscillating) dependence on the AF layer thickness. It is a manifestation of the proximity-induced Neel-type triplet correlations, which acquire finite total pair momentum and oscillate in the AF layer due to the Umklapp electron scattering processes at the AF/S interface. Our prediction can provide a possible explanation for a number of recently published experimental observations of the critical temperature of AF/S bilayers

Use of finite difference method for numerical solution of three-dimensional heat transfer fractional differential equation

The paper proposes a numerical solution for the mixed problem concerning a three-dimensional heat transfer fractional differential equation, based on the finite difference method. To solve this problem, an explicit difference scheme described in the paper is used. The stability of a proposed difference scheme is proved. The case of homogeneous medium and a square grid is considere

Laryngeal Variation in the Scottish English Voice Contrast: Glottalisation, Ejectivisation and Aspiration

Preaspiration of fricatives and glottalisation of syllabic coda stops can be important phonetic correlates of obstruent /voice/ in some varieties of Scottish English. Within such varieties, this encoding of /voice/ is based on voice quality (laryngeal settings) and is subject to substantial interspeaker variation. We analyse the occurrence of preaspiration and glottalisation/ejectivisation in relationship to the laryngeal settings of individual speakers to explain the phonetic diversity of the contrast in Scottish English. The paper is intended as an illustration of how various voice quality contrasts can pave ways into phonological systems, and phonetically become the most important acoustical landmarks in the segmental contexts traditionally described in terms of periodicity or its timing.caslpub2793pu

Non-normative preaspirated voiceless fricatives in Scottish English: Phonetic and phonological characteristics

This series consists of unpublished working- papers. They are not final versions and may be superseded by publication in journal or book form, which should be cited in preference. All rights remain with the author(s) at this stage, and circulation of a work in progress in this series does not prejudice its later publication. Comments to authors are welcome.Preaspiration is usually associated with stops rather than fricatives, both at phonological and phonetic levels of description. This study reports the occurrence of phonetic (nonnormative)preaspiration of voiceless fricatives in Scottish Standard English (SSE)spoken in the Central Belt of Scotland. We classify it as non-normative because it is variably present in different speakers, but the distribution is nevertheless understandable on phonetic grounds. The paper analyses the phonetic distribution of preaspiration and its functions in SSE. Preaspiration is shown to occur more frequently after open vowels and phrase-finally. Sociophonetic conditioning by speaker's sex is not found to be relevant. Functional analysis shows that preaspiration (reflected in the amount of noise in mid/high spectralfrequencies) is a systematic correlate of phonological fricative /voice/ contrast phrase finally. In this context, it appears to be even stronger predictor of /voice/ than such traditionally-considered correlates as voicing offset and segmental duration. The results show that abstract non-neutralised /voice/ is phonetically multidimensional such that fricative preaspiration can maintain the contrast in the contexts where phonetic voicing is demoted. The extent and functioning of preaspiration in SSE suggests that it is a varietyspecific optional characteristic resulting from a learned dissociation of lingual and laryngeal stricture gestures in voiceless fricatives.caslpub154pu

Ischemic postconditioning and activity complement component C3 in cerebral ischemic and reperfusion injury

Introduction: Ischemic postconditioning (IPost) is an effective mechanism to protect the cells from ischemic and reperfusion injury. Activation of the complement system in ischemic and reperfusion brain injury can cause additional damage to healthy tissue. Changes in the activity of C3 complement component in global cerebral ischemia and IPost are unknown. Purpose: The aim of this study was to quantify the functional activity of C3 component of complement in the serum of rats at different stages of reperfusion after cerebral global ischemia and IPost. Adult male rats Wistar weigting 250-280g were used for this study. Animals were housed in a 12hours/12hours light/dark cycle with free access to water and food. Transient global cerebral ischemia-reperfusion in the rat by reversible occlusion of major vessels, extended from the aortic arch and supplied the brain with blood. With the serum of rats determined The activity of complement component C3 on the second and seventh day of reperfusion period after a ten-minute global cerebral ischemia was determined in serum of rats. It was shown that reversible 10-minute ischemic brain injury in rats leads to increased activity of C3 component of complement in the first seven days after global ischemia, with the maximal increase in the C3 activity on the 2nd day of reperfusion. IPost leads to a significant increase in the functional activity of complement component C3 on the 7th day of reperfusion. This work was supported by the grant of the President of the Russian Federation for support of leading scientific groups 2359.2012.7

Complete TcT_c suppression and N\'eel triplets-mediated exchange in antiferromagnet-superconductor-antiferromagnet trilayers

An antiferromagnetic insulator (AFI) bearing a compensated interface to an adjacent conventional superconductor (S) has recently been predicted to generate N\'eel triplet Cooper pairs, whose amplitude alternates sign in space. Here, we theoretically demonstrate that such N\'eel triplets enable control of the superconducting critical temperature in an S layer via the angle between the N\'eel vectors of two enclosing AFI layers. This angle dependence changes sign with the number of S monolayers providing a distinct signature of the N\'eel triplets. Furthermore, we show that the latter mediate a similarly distinct exchange interaction between the two AFIs' N\'eel vectors.Comment: 7 pages, 4 figure

Acquisition of Scottish English Phonology: an overview

This series consists of unpublished working- papers. They are not final versions and may be superseded by publication in journal or book form, which should be cited in preference. All rights remain with the author(s) at this stage, and circulation of a work in progress in this series does not prejudice its later publication. Comments to authors are welcome.Scottish English is usually characterized as a language continuum from Broad Scots to Scottish Standard English- (Corbett, McClure & Stuart-Smith, 2003, p.2). A 1996 survey preparatory to the 2001 census by the General Register Office (Scotland) estimated that about 30% of the Scottish population use (Broad) Scots to some extent, rising to 90% in the North East. The linguistic situation on the ground is complicated somewhat by population movement and dialect contact (as well as uncertainty about what constitutes Scots or Scottish Standard English (SSE) in the first place). Scots derives from the Anglian variety of Old English spoken in the 6th century, and varies regionally, whereas SSE is far more homogenous geographically. Scots speakers still tend only to be exposed in childhood to a Scottish English continuum which is rooted in their own local variety of Scots and so are not influenced much by other geographically delimited broad varieties. This continuum is of course just one aspect of sociolinguistic variation and is itself always undergoing language change: large differences should be expected between older more conservative speakers and the young as well as regionally and socio-economically. In the urban setting, local housing variation means that adjacent neighbourhoods may have markedly different linguistic profiles. Even the two ends of the Scots-SSE continuum are largely mutually intelligible, though mastery of SSE will not prepare someone new to Scotland (or indeed nave Scots themselves) for the difficulties they will face in understanding a broad speaker from an unfamiliar area. In general, the closely-related varieties of Scottish English can be thought of as being parallel with - but independent from - the other Englishes of the UK, but with their own national focus, however vague that is. The size, proximity and influence of England, as well as population movements mean, however, that historically and synchronically, the Scottish English continuum is attracted towards its English neighbour.caslunpub149unpu

Rhizobacteria Effect on Arsenic Migration and Translocation of Biogenic Elements in Plants

The study was aimed at the transformation of arsenic compounds in the rhizosphere, its accumulation in plants, P and Si translocation to plants under the influence of Bacillus megaterium var. phosphaticum, and Bacillus mucilaginosus with various forms of As compounds in the soil. The authors describe the maximum effect of Bacillus megaterium var. Phosphaticum strain on As migration, its mobilization and immobilization in the rhizosphere due to arsenic leaching from mineral and difficult-todestroy compounds and its accumulation in plants. The forms of arsenic compounds were isolated from the rhizosphere based on sequential extraction procedures. The features of the inter-element As-P interaction in plants were established. With the intense accumulation of As in the rhizosphere inoculated with rhizobacteria, the intake of phosphorus into plants was not observed, as contrary to Si. The study of As and biogenic elements behavior under the influence of rhizobacteria is of great importance in the development of ecobiotechnologies related to soil remediation and crop production

Family’s World in Mirror of Women’s Press in New Economic Policy’s Period

The transformation of the women’s press during the NEP period is examined in the article, attention is paid to the specifics of the functioning of family and household magazines for women, on the pages of which both the reforms and events of the Soviet era and pre-revolutionary values were reflected. The authors strive to identify the role that the “Magazine for Housewives” and “Women’s Magazine” played during the NEP period, supporting the family world in all its diverse social and spiritual manifestations; to clarify the ratio of traditional and innovative journalistic approaches in the formation of family and everyday media discourse. The results of a quantitative and qualitative content analysis of the publications of the “Magazine for Housewives” and “Women’s Magazine” of the NEP period are presented in the article. The novelty of the research is seen in the analysis of the structural, thematic, functional features of women’s magazines of the NEP era. Special attention is paid to the author’s body, including the previously unexplored works of A. S. Voznesensky (real name — Brodsky), who signed his materials with the pseudonym “Ilya Rentz”. It is concluded that non-state women’s editions of family and household orientation appealed to the experience of pre-revolutionary journalism and, discussing the reform of everyday life and family, continued to write about traditional family values