Search results for "rex"
showing 10 items of 701 documents
Predictive habitat suitability models to aid the conservation of elasmobranchs in Isla del Coco National Park (Costa Rica)
2021
Abstract Worldwide there is increasing concern for elasmobranch species given that their biological and ecological characteristics make them highly vulnerable to fishing pressure. The disappearance of these species could affect the structure and function of marine ecosystems, which would induce changes in trophic interactions at the community level. For effective conservation and management of elasmobranchs detailed knowledge of their habitat preferences is essential. Yet, there is a poor understanding of their spatial ecology. Isla del Coco National Park is an oceanic island in Pacific Costa Rica and renowned for being a sanctuary for migratory pelagic species, such as elasmobranchs and ot…
A new tetranuclear defective dicubane azide-bridged cobalt(II) complex
2013
Abstract The new tetranuclear cobalt(II) complex with formula [Co4(N3)8(4,5-diazafluoren-9-one)4] (1) is reported. Complex 1 is a cobalt(II) defective dicubane azide-bridged compound showing only azido bridging ligands in the μ1,1– and μ1,1,1– coordination modes. The magnetic properties of 1 are reported. Magnetic susceptibility measurements indicate ferromagnetic coupling. The magnetic data have been fitted to 2 K by considering two different superexchange coupling constants. The out-of-phase signal χM″ displays frequency-dependence below approximately 9 K.
Fuzzy Identities in (Dis)Integrating Europe: Discursive Identifications of Poles in Britain Following Brexit
2019
This study explores the fuzzy discursive identifications of Polish residents in Britain following the Brexit referendum by using a corpus of Polish-language glocal media materials (Moja.Wyspa.co.uk). Fuzziness is defined and operationalized on three levels: with respect to (1) online media technologies (global/local; above-/below-the-line) that allow diverse voices; (2) identity positions of non-native residents (Polish migrants as EU citizens at a destabilizing moment) who are left with the sense of anomie and “in-betweenness”; (3) discursive strategies of self-presentation mobilized in the ongoing processes of identification, whose analysis sometimes transcends classificatory grids offere…
The post-referendum reconfigurations of conservative cleavages around black and Asian minority ethnic MPs
2020
At the level of the Conservative parliamentary party, one of the main effects of Brexit has been a realignment of party cleavages. While the old cleavage between Europhiles and Eurosceptics is no l...
Theresa May’s Representation of Reality in her Brexit Speeches
2020
This study analyses Theresa May’s three seminal Brexit speeches. These describe the kind of desirable post-Brexit EU-UK relationship that she envisioned, and together constitute a corpus of 18,532 words. The speeches can be considered as landmarks on a timeline that was initially meant to lead to the delivery of Brexit. It is hypothesized that there may be meaningful differences between the speeches, and that these affect the representation of reality. These in turn would have a bearing on May’s discursive self-representation as either an individualized or a collectivized social actor. To account for such representational values, the study draws on Halliday’s Transitivity System (1994), sta…
"Euesperides (Benghazi): Preliminary report on the Spring 2004 Season".
2004
AbstractThis article reports on the sixth season of the ongoing project at Euesperides (Benghazi). Excavation in Area P established the date of construction of the penultimate phase (and therefore of the plain pebble mosaic with inscription published last year) as 300-282 BC, following the abandonment and demolition of the antepenultimate phase beneath it. An area used for the preparation and cutting of the materials employed in the final-phase mosaics has been identified. In Area Q the dismantling of the street sequence was completed, and the W building fronting the street found to date from the fifth century BC. In Area R the crushed deposits ofMurexshell were removed and working surfaces…
The nested games of the UK’s EU referendum: ruptures, reconfigurations and lessons for Europe
2021
The 2016 decision by the United Kingdom to withdraw from the European Union was a seminal one for both parties. In this special issue, we consider the extent to which the inter-penetration of the national and the European arenas produced significant opportunities for recasting political action. The nesting of these two levels matters firstly in allowing for the politicisation and mobilisation of domestic actors around European issues and secondly in explaining why seemingly sub-optimal or counter-productive actions are taken. The tensions this generated reached a critical juncture with the referendum, a rupture that highlights the extent to which a nominally second-order vote can have funda…
Photogenotoxicity of folic acid.
2013
Folic acid (FA), also named vitamin B9, is an essential cofactor for the synthesis of DNA bases and other biomolecules after bioactivation by dihydrofolate reductase (DHFR). FA is photoreactive and has been shown to generate DNA modifications when irradiated with UVA (360 nm) in the presence of DNA under cell-free conditions. To investigate the relevance of this reaction for cells and tissues, we irradiated three different cell lines (KB nasopharyngeal carcinoma cells, HaCaT keratinocytes, and a melanoma cell line) in the presence of FA and quantified cytotoxicity and DNA damage generation. The results indicate that FA is phototoxic and photogenotoxic by two different mechanisms. First, ext…
Molecular Characterization of Virus-induced Autoantibody Responses
2004
Here we present a comprehensive molecular mapping of virus-induced autoimmune B cell responses obtained by serological identification of antigens by recombinant expression cloning analysis. Immunoscreening of cDNA expression libraries of various organs (lung, liver, and spleen) using sera from mice infected with cytopathic (vaccinia virus [VV]) or noncytopathic (lymphocytic choriomeningitis virus [LCMV]) viruses revealed a broad specificity of the elicited autoantibody response. Interestingly, the majority of the identified autoantigens have been previously described as autoantigens in humans. We found that induction of virus-induced autoantibodies of the immunoglobulin G class largely depe…
Dehlorānu grupas savienojumu noteikšana pārtikas produktos ar gāzu hromatogrāfiju – augstas izšķirtspējas masspektrometriju
2017
Dehlorānu grupas savienojumu noteikšana pārtikas produktos ar gāzu hromatogrāfiju-augstas izšķirtspējas masspektrometriju. Ozoliņa M., zinātniskie vadītāji doktorante Mg.ķīm Rjabova J., Dr.ķīm., prof. Vīksna A. Bakalaura darbs, 38 lappuses, 3 attēli, 10 tabulas, 37 literatūras avoti, 1 pielikums. Latviešu valodā. Darbā ir apkopota literatūra par dehlorānu grupas savienojumiem, to īpašībām un izmantošanu. Ir apskatīta to izplatība apkārtējā vidē un toksiskums. Literatūras apskatā ir pārskats par dehlorānu noteikšanā izmantojamām ekstrakcijas, attīrīšanas un analīzes metodēm. Eksperimentālajā daļā ir noteikta dehlorānu koncentrācija 69 pārtikas produktu paraugos izmantojot gāzu hromatogrāfiju…