Concept

Heavy metal

Publications associées (92)

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We present the results of a systematic study of the temperature-dependent resistivity and of T-c of a single crystal MgB2 sample as a function of point defect concentration. We have found linear, albeit weak, correlation between the decreasing superconduct ...

2007

Relationship between testate amoebae and atmospheric heavy metals (Pb, Cd, Zn, Ni, Cu, Mn and Fe) accumulated in the moss Barbula indica Hanoi, Vietnam

Edward Mitchell

We studied the relationships between testate amoeba communities and heavy metal (Pb, Cd, Zn, Ni, Cu, Mn, and Fe) concentrations in the moss Barbula indica sampled at 29 sites in and around the city of Hanoi (Vietnam). Our first approach was to compare the ...

2007

Neutral ligands with exceptional donor ability for palladium-catalyzed alkene hydrogenation

With four site: Catalytic olefin hydrogenation is observed with palladium complexes when the N-heterocyclic carbene ligand is changed from the normal C2- to the unusual C4-bonding mode (see scheme). In a cis coordinating framework, the electron density at ...

2007

On the influence of "arm-on, arm-off" processes on alkene hydrogenation catalysed by a rhodium triphos complex

Paul Joseph Dyson

The influence of phosphane "arm-on, arm-off" assocn./dissocn. in rhodium catalyzed alkene hydrogenation using [Rh(COD)(k3-triphos)]PF6 {1, COD = cyclooctadiene, triphos = 1,1,1-tris(diphenylphosphanylmethyl)ethane} has been investigated by comparison of th ...

2007

We perform rigorous simulations of hybrid long-range modes guided by a central metal core and a two-dimensional dielectric slab. We show that these modes are subject to fewer limitations than conventional long-range plasmon modes in terms of field confinem ...

2007

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The replication process is presented and discussed with emphasis on methods for microstructural tailoring of open-pore microcellular aluminium-based foams, highlighting methods it offers for control of principal foam mesostructural and microstructural para ...

2006

The discovery of new metal-based antitumor drugs, whether cisplatin derivs. or those based on other metals, has been largely based on cell viability assays (IC50 values) and compds. that bind to DNA. This approach has been applied for more than 30 years du ...

2006

Self-assembly of organometallic macrocycles and cages

Thomas Brasey

Neutral metallamacrocycles with four or ten metal centers were obtained by reaction of [(R3P)PdCl2]2 with 2,3-dihydroxypyridine and derivatives or 2-hydroxynicotinic acid in the presence of base. In all these assemblies, the two O-donor atoms of the ligand ...

EPFL2006

Synchrotron microradiography study on acute lung injury of mouse caused by PM2.5 aerosols

Yiming Li, Giorgio Margaritondo

In order to investigate FeSO4, ZnSO4 (the two of main metal compositions of Shanghai PM2.5 (particle matter with those aerodynamical diameter

Elsevier2006

Predicting the bioavailability of metals and metal complexes: Critical review of the biotic ligand model

Environmental Context. The chemical speciation of trace metals greatly influences their biological effects. Nonetheless, no clear consensus currently exists as to when metal complexes are bioavailable, especially for field conditions. Recently, the USA EPA ...

2005