Metal ion binding to iron oxides   总被引：2，自引：0，他引：2  

M. Ponthieu  F. Juillot  W.H. van Riemsdijk 《Geochimica et cosmochimica acta》2006,70(11):2679-2698

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Reconstitution des apports en éléments traces métalliques et bilan de leur migration dans un Luvisol sableux soumis à 100 ans d'irrigation massive par des eaux usées brutes     

Christelle Dère  Isabelle Lamy  Folkert van Oort  Denis Baize  Sophie Cornu 《Comptes Rendus Geoscience》2006,338(8):565-573

Raw wastewaters were massively spread on sandy luvisols near Paris from 1899 to 2002, leading to high trace metals (TM) pollution of soils. Mass balance calculations were performed on a soil profile to assess vertical migration of TM. The contamination was estimated by subtracting the natural pedo-geochemical background of the horizons. TM inputs were estimated using Cr as an invariant. It is shown that Pb and Cr remained in the surface horizon, while Ni, Cd, Cu and Zn migrated downward, being more or less trapped depending on the physicochemical properties of the horizons. To cite this article: C. Dère et al., C. R. Geoscience 338 (2006).  相似文献   

Promoting local management in groundwater     

Frank van Steenbergen 《Hydrogeology Journal》2006,14(3):380-391

There is a strong case for making greater effort to promote local groundwater management—in addition to other measures that regulate groundwater use. Though scattered, there are several examples—from India, Pakistan, Yemen and Egypt—where groundwater users effectively self-imposed restrictions on the use of groundwater. There are a number of recurrent themes in such spontaneously-developed examples of local regulation: the importance of not excluding potential users; the importance of simple, low transaction cost rules; the power of correct and accessible hydrogeological information; the possibility of making more use of demand and supply management strategies; and the important supportive role of local governments. The case is made, using examples, for actively promoting local groundwater management as an important element in balancing groundwater uses. Two programmes for promoting local groundwater management in South India are described—one focussing on participatory hydrological monitoring, and one focussing on micro-resource planning and training. In both cases the response was very positive and the conclusion is that promoting local groundwater regulation is not difficult, costly or sensitive and can reach the necessary scale quickly.  相似文献   

Mesoscale and tidal oscillations in surface pressure data     

Drs. W. D. van den Berg 《Meteorology and Atmospheric Physics》1983,32(4):375-388

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A multiply imaged, submillimetre-selected ultraluminous infrared galaxy in a galaxy group at z∼ 2.5     

Jean-Paul Kneib  Paul P. van der Werf  Kirsten Kraiberg Knudsen  Ian Smail  rew Blain  Dave Frayer  Vicki Barnard  Rob Ivison 《Monthly notices of the Royal Astronomical Society》2004,349(4):1211-1217

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A multibeam H i survey of the Virgo cluster – two isolated H i clouds?     

J. Davies  R. Minchin  S. Sabatini  W. van Driel  M. Baes  P. Boyce  W. J. G. de Blok  M. Disney  Rh. Evans  V. Kilborn  R. Lang  S. Linder  S. Roberts  R. Smith 《Monthly notices of the Royal Astronomical Society》2004,349(3):922-932

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Recent Developments Concerning High-Velocity Clouds     

Bart P. Wakker 《Astrophysics and Space Science》2004,289(3-4):381-390

I summarize the new developments in HVC research that have occurred in the pastfew years. These include a) the determination of approximate distances to someIVCs and HVC complex A; b) the measurement of the metallicity of the MagellanicStream and the conclusion that tidal forces are dominant in creating the Stream;c) the derivation that the metallicity of complex C is 0.1 solar, with someevidence for metallicity variations; d) the result that N/O in complex C is 0.2times the solar ratio, a value otherwise only seen in dwarf galaxies and DampedLyα systems; e) the discovery of high-velocity OVI absorption, bothassociated with previously known HI HVCs and in directions without a HI HVC;f) the proposal that HVCs form a population of objects permeating the LocalGroup.  相似文献   

A laterally constricted shear zone system — the Nordre Strømfjord steep belt, Nagssugtoqidian Orogen, W. Greenland     

C. W. Passchier  S. W. I. den  Brok J. A. M. van  Gool M. Marker  G. Manatschal 《地学学报》1997,9(5-6):199-202

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Upper Palaeolithic faunas from south-west France. A zoogeographic perspective. Katherine V. Boyle. British Archaeological Reports International Series 557 1990 £27.00 ISBN 0 8654 704 3     

Louise H. van Wijngaarden-Bakker 《第四纪科学杂志》1991,6(3):259-260

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Spectral and intensity variations in cygnus X-3 by the Astronomical Netherlands Satellite     

A. C. Brinkman  J. Heise  R. Mewe  A. J. F. den Boggende  J. Schrijver  E. Gronenschild  Y. Tanaka  D. R. Parsignault  J. Grindlay  E. Schreier  H. Schnopper  H. Gursky 《Astrophysics and Space Science》1976,42(1):201-204

Measurements obtained with the Utrecht (1–8 keV) and Cambridge (1–28 keV) instruments on board the Astronomical Netherlands Satellite are discussed. Particularly, the 4.8 hr period is investigated.Paper presented at the COSPAR Symposium on Fast Transients in X- and Gamma-Rays, held at Varna, Bulgaria, 29–31 May, 1975.  相似文献