265 resultados para Ephemera


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Colección de diez cromos numerados en romanos. Al verso de los cromos aparece impreso un texto alusivo a la escena representada

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Colección de diez cromos numerados en romanos. Al verso de los cromos aparece impreso un texto alusivo a la escena representada

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Map engraved by Stanislao Stucchi after Carlo Griggi.

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Mode of access: Internet.

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Influence of methanogenic populations in Holocene lacustrine sediments revealed by clone libraries and fatty acid biogeochemistry.Biological characteristics of ice-associated algal communities were studied in Darnley Bay (western Canadian Arctic) during a 2-week period in July 2008 when the landfast ice cover had reached an advanced stage of melt. We found two distinct and separate algal communities: (1) an interior ice community confined to brine channel networks beneath white ice covers; and (2) an ice melt water community in the brackish waters of both surface melt ponds and the layer immediately below the ice cover. Both communities reached maximum chlorophyll a concentrations of about 2.5 mg/m**3, but with diatoms dominating the interior ice while flagellates dominated the melt water community. The microflora of each community was diverse, containing both unique and shared algal species, the latter suggesting an initial seeding of the ice melt water by the bottom ice community. Absorption characteristics of the algae indicated the presence of mycosporine-like amino acids (MAAs) and carotenoid pigments as a photoprotective strategy against being confined to high-light near-surface layers. Although likely not contributing substantially to total annual primary production, these ice-associated communities may play an important ecological role in the Arctic marine ecosystem, supplying an accessible and stable food source to higher trophic levels during the period of ice melt.

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This paper takes some of Melanie Klein’s ideas, which Bion (1961/1998) previously used to understand group dynamics, to analyse the discipline of management studies since its ‘birth’ in the United States in the late 19th century. Specifically, it focuses on the idealisation of work and play, and argues that at its inception, for idiosyncratic historical reasons, the discipline was rooted in a ‘paranoid-schizoid’ position in which work was idealised as good and play as bad. The paper maps out the peculiar set of factors and influences that brought this about. It then examines how and if, again following Klein, the discipline has evolved to the ‘depressive’ position, where the idealisations are replaced by a more ambiguous, holistic semantic frame. Seven different relationships between work and play are then described. The paper contends that the originary splitting and idealisation is foundational to the discipline, and provides an enduring basis for analysing management theory and practice. It concludes by using this splitting to map out five potential future trajectories for the discipline.

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This paper considers the desire for unity, reconciliation and consensus underpinning three models of talking – namely, 'the meeting', 'the dyadic love relationship', and 'the psychoanalytic session'. We highlight the three domains’ shared intellectual and historical heritage wherein talk is seen as a mode of achieving unity (of the group, of the dyad, or of the self) and conversely 'silence' is seen as pathology. Through looking at the role of silence in the works of Lacan, Joyce, and Beckett, we then examine how conversations with a collective, an Other, the self, etc. can all be enriched by ambivalence, antagonism and, in particular, silence. In contrast to the conventional understanding, silence is not the 'end' of understanding, but rather a new beginning. From this perspective, silence can be the basis upon which we can begin to imagine a principled relationship with the Other.

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The taxonomic composition and types of particles comprising the downward particle flux were examined during the mesoscale artificial iron fertilisation experiment LOHAFEX. The experiment was conducted in low-silicate waters of the Atlantic Sector of the Southern Ocean during austral summer (January-March 2009), and induced a bloom dominated by small flagellates. Downward particle flux was low throughout the experiment, and not enhanced by addition of iron; neutrally buoyant sediment traps contained mostly faecal pellets and faecal material apparently reprocessed by mesozooplankton. TEP fluxes were low, <5 mg GX eq/m**2/day, and a few phytodetrital aggregates were found in the sediment traps. Only a few per cent of the POC flux was found in the traps consisting of intact protist plankton, although remains of taxa with hard body parts (diatoms, tintinnids, thecate dinoflagellates and foraminifera) were numerous, far more so than intact specimens of these taxa. Nevertheless, many small flagellates and coccoid cells, belonging to the pico- and nanoplankton, were found in the traps, and these small, soft-bodied cells probably contributed the majority of downward POC flux via mesozooplankton grazing and faecal pellet export. TEP likely played an important role by aggregating these small cells, and making them more readily available to mesozooplankton grazers.

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The nature of religion on the domestic front in Britain during the Second World War has, hitherto, been relatively unexplored. This study focuses on Birmingham and describes wartime popular religion, primarily as recounted in oral testimony. The difference the War made to people’s faith, and the consolation wrought by prayer and a religious outlook are explored, as are the religious language and concepts utilised by the wartime popular media of cinema and wireless. Clerical rhetoric about the War and concerns to spiritualise the war effort are dealt with by an analysis of locally published sources, especially parish magazines and other religious ephemera, which set the War on the spiritual as much as the military plane. A final section of the study is devoted to measuring the extent of the influence of the churches in the creation of a vision for post-war Britain and Birmingham.