The Durham/UKST Galaxy Redshift Survey – VII. Redshift-space distortions in the power spectrum     

P. J. Outram  Fiona Hoyle  T. Shanks 《Monthly notices of the Royal Astronomical Society》2001,321(3):497-501

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Developing support structures for ethnic minorities in Slovakia     

Fiona Simpson 《GeoJournal》2000,50(2-3):127-131

Ethnic minorities are facing increasing problems of social exclusion in Central and Eastern Europe. The complex nature of the transition from socialism means that the institutional framework to support them is still being established. Whilst non-governmental organisations (NGOs) have a crucial role to play in promoting a more inclusive society, through improving access to local democratic structures for otherwise excluded groups and acting as fora for improved community participation throughout the region, their development remains fraught with problems. Examination of the experiences of one such organisation, ETNO Agentura based in northern Slovakia, provides an insight into the problems and opportunities arising as community representatives work together to provide social support for ethnic minorities. The paper outlines key issues arising from the case of ETNO Agentura, including difficulty in gaining access to supporting finance and securing long term financial viability, the lack of institutional capacity of local authorities to become receptive to their views, and implicit socio-cultural barriers to ethnic minority representation in community participation processes. Developing a fuller understanding of these problems and the measures required to overcome them is a central part of establishing a more effective role for NGOs within post socialist societies. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   

Trace element distribution in Central Dabie eclogites   总被引：16，自引：0，他引：16  

R. Sassi  B. Harte  D. A. Carswell  H. Yujing 《Contributions to Mineralogy and Petrology》2000,139(3):298-315

Coesite-bearing eclogites from Dabieshan (central China) have been studied by ion microprobe to provide information on trace element distributions in meta-basaltic mineral assemblages during high-pressure metamorphism. The primary mineralogy (eclogite facies) appears to have been garnet and omphacite, usually with coesite, phengite and dolomite, together with high-alumina titanite or rutile, or both titanite and rutile; kyanite also occurs occasionally as an apparently primary phase. It is probable that there was some development of quartz, epidote and apatite whilst the rock remained in the eclogite facies. A later amphibolite facies overprint led to partial replacement of some minerals and particularly symplectitic development after omphacite. They vary from very fine-grained dusty-looking to coarser grained Am + Di + Pl symplectites. The eclogite facies minerals show consistent trace element compositions and partition coefficients indicative of mutual equilibrium. Titanite, epidote and apatite all show high concentrations of REE relative to clinopyroxene. The compositions of secondary (amphibolite facies) minerals are clearly controlled by local rather than whole-rock equilibrium, with the composition of amphibole in particular depending on whether it is replacing clinopyroxene or garnet. REE partition coefficients for Cpx/Grt show a dependence on the Ca content of the host phases, with D _REE ^Cpx/Grt decreasing with decreasing D _Ca . This behaviour is very similar to that seen in mantle eclogites, despite differences in estimated temperatures of formation of 650–850 °C (Dabieshan) and 1000–1200 °C (mantle eclogites). With the exception of HREE in garnet, trace elements in the eclogites are strongly distributed in favour of minor or accessory phases. In particular, titanite and rutile strongly concentrate Nb and Zr, whilst LREE–MREE go largely into epidote, titanite and apatite. If these minor/accessory minerals behave in a refractory manner during melting or fluid mobilisation events and do not contribute to the melt/fluid, then the resultant melts and fluids will be strongly depleted in LREE–MREE. Received: 11 February 1999 / Accepted: 31 January 2000  相似文献   

The identity of the British Ordovician cystoid ‘Hemicosmites rugatus Forbes‘     

Fiona A. Lanc  Patrick D. McDermott  Christopher R.&#x;C. Paul 《Geological Journal》2015,50(1):1-16

New articulated specimens of the British Ordovician cystoid first mentioned under the name ‘Hemicosmites rugatus Forbes’ in 1848 allow its morphology and systematic affinities to be established for the first time. Despite being based on isolated plates, ‘H. rugatus Forbes’ has been reported from England and Wales, Belgium, France, Spain and Thailand, and has been attributed to four genera. It is characterized by a heteromorphic, circular stem, a theca with four basal, six infra‐lateral and eight lateral plates, all with sharp‐crested ridges running to plate angles, multiple arms in each ambulacrum and an extensive tegmen. These characters indicate it belongs in the family Caryocrinitidae and genus Caryocrinites. Caryocrinites rugatus had arms with lateral brachioles that folded in against the main arm axis, as in the type species C. ornatus Say. It is the first Ordovician species known to possess this character. Isolated plates show sorting and a few may represent other species of Caryocrinites s.l. Copyright © 2013 John Wiley & Sons, Ltd.  相似文献   

Plastic contamination in the decapod crustacean Nephrops norvegicus (Linnaeus, 1758)     

Murray F  Cowie PR 《Marine pollution bulletin》2011,62(6):1207-1217

The aim of this study was to determine the extent Nephrops consumes plastics in the Clyde Sea and if this intake occurs through their diet. Plastic contamination was found to be high in Nephrops, 83% of the animals sampled contained plastics (predominately filaments) in their stomachs. Tightly tangled balls of plastic strands were found in 62% of the animals studied but were least prevalent in animals which had recently moulted. No significant difference in plastic load was observed between males and females. Raman spectroscopy indicated that some of the microfilaments identified from gut contents could be sourced to fishing waste. Nephrops fed fish seeded with strands of polypropylene rope were found to ingest but not to excrete the strands. The fishery for Norway lobster, Nephrops norvegicus, is the most valuable in Scotland and the high prevalence of plastics in Nephrops may have implications for the health of the stock.  相似文献   

Lidar observations of subvisual atmospheric phenomena: Research note     

S.R. Pal  R.W. Bell  A.I. Carswell 《大气与海洋》2013,51(2):226-230

Abstract

The systematic error of a large ensemble of 72 ‐h forecasts, as produced by the Canadian Meteorological Centre's spectral model, is studied with particular emphasis on its seasonal and spatial character. By decomposing the error into wavenumber space, we show that most of the error manifests itself in the long planetary waves. We find that the model displays a large systematic error in zonal wavenumber one, which systematically moves westward during each integration.  相似文献   

The 2dF QSO Redshift Survey – XI. The QSO power spectrum     

P. J. Outram  Fiona Hoyle  T. Shanks  S. M. Croom  B. J. Boyle  L. Miller  R. J. Smith  A. D. Myers 《Monthly notices of the Royal Astronomical Society》2003,342(2):483-495

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The 2dF QSO Redshift Survey – XIII. A measurement of Λ from the quasi-stellar object power spectrum, P^S(k_∥, k_⊥)     

P. J. Outram  T. Shanks  B. J. Boyle  S. M. Croom  Fiona Hoyle  N. S. Loaring  L. Miller  R. J. Smith 《Monthly notices of the Royal Astronomical Society》2004,348(3):745-752

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Testing stellar population models with star clusters in the Large Magellanic Cloud     

Michael A. Beasley  Fiona Hoyle  Ray M. Sharples 《Monthly notices of the Royal Astronomical Society》2002,336(1):168-188

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Periodic drainage of ice-dammed lakes as a result of variations in glacier velocity     

Peter G. Knight  Fiona S. Tweed 《水文研究》1991,5(2):175-184

Previous discussions of the catastrophic drainage of ice-dammed lakes have centred on mechanisms where characteristics of the lake are crucial to drainage initiation, for example dam flotation or tunnel formation at a critical lake depth. This paper describes a mechanism for lake drainage where drainage initiation depends on the characteristics of the glacier and is independent of the characteristics of the lake. Prediction of this mechanism must be based on glacier dynamics, whereas the mechanisms most commonly discussed previously are best predicted primarily on the basis of lake evolution. An ice-dammed lake at the margin of the glacier Solheimajokull, in southern Iceland, was observed to drain rapidly into the sub- or englacial drainage system, supplying water and debris to the bed or interior of the glacier. Geomorphological evidence suggests that the lake drains and refills periodically, discharging up to 13300 m³ of water into the glacier-hydrological system. The depth of the maximum lake is insufficient to cause either flotation of the ice margin or tunnel opening by plastic deformation of the ice, and we suggest that sudden drainage is related to ice-bed separations associated with specific glacier flow states rather than to a critical lake depth threshold. This mechanism of lake drainage has implications for conditions at the glacier bed, for the development of basal ice and for the entrainment of debris into the glacier, as well as for the prediction of potentially hazardous catastrophic drainage events and jokulhlaups from ice-dammed lakes.  相似文献