Performance of a NiFeO@Co Core-Shell Fischer-Tropsch Catalyst: Effect of Low Temperature Reduction.

In situ TEM gas-cell imaging and spectroscopy with in situ XRD have been applied to reveal morphological changes in NiFeO@CoO core-shell nanoparticles in hydrogen. The core-shell structure is retained upon reduction under mild conditions (180 °C for 1 h), resulting in a partially reduced shell. The core-shell structure was retained after exposing these reduced NiFeO@CoO core-shell nanoparticles to Fischer-Tropsch conditions at 230 °C and 20 bar.

South Africa's protracted struggle for equal distribution and equitable access - still not there.

The purpose of this contribution is to analyse and explain the South African HRH case, its historical evolution, and post-apartheid reform initiatives aimed at addressing deficiencies and shortfalls. HRH in South Africa not only mirrors the nature and diversity of challenges globally, but also the strategies pursued by countries to address these challenges. Although South Africa has strongly developed health professions, large numbers of professional and mid-level workers, and also well-established training institutions, it is experiencing serious workforce shortages and access constraints.

A qualitative exploration of resilience in pre-adolescent AIDS orphans living in a residential care facility.

This article presents the findings of a study among a small group of South African AIDS orphans living in a residential care facility, Lebone Land. The research was conducted between June and September 2006. A qualitative, exploratory study consisting of in-depth, semistructured interviews with eight children and seven key informants aimed to identify and investigate developmental assets operating in the children's lives to help them cope amid exposure to adversities.

Palladium(II) complexes of new bulky bidentate phosphanes: active and highly regioselective catalysts for the hydroxycarbonylation of styrene.

The synthesis of four new bulky bidentate phosphines that possess both tert-butyl and trifluoromethylphenyl substituents is described. Symmetric ligands were readily obtained by alkylation of phosphidoboranes of the type Li[P(BH(3))(tBu)(Ar)] with dihaloalkanes. Non-symmetric ligands were prepared from a new stable precursor, tBu(2)P(BH(3))(CH(2))(3)Br, that should prove useful for other ligand syntheses.

Palladium complexes of new bulky fluorinated diphosphines give particularly active and regioselective catalysts for hydroxycarbonylation of styrene.

Some new bulky fluorinated diphosphines have been prepared and converted to palladium dichloride complexes that have been found to give increased regioselectivity and activity over other Pd-diphosphine systems when used as catalysts for hydroxycarbonylation of styrene.

Synthesis and characterization of a novel cobalt carbonyl N-heterocyclic carbene salt. Crystal structure of [Co(CO)(3)(IMes)(2)](+)[Co(CO)(4)](-).

The disproportionation of dicobalt octacarbonyl induced by the free carbene 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene (IMes) and the X-ray characterization of the cyclohexane solvate of the resulting cobalt carbonyl N-heterocyclic carbene salt, [Co(CO)3(IMes)2]+[Co(CO)4]-.1/4C6H12, is reported. The crystal structure represents the first example of a [Co(CO)3(L)2][Co(CO)4] disproportionate salt reported to date.

A tripodal sulfur ligand for the selective ruthenium-catalysed hydrogenation of dimethyl oxalate.

The first example of a catalyst utilising a sulfur-based ligand [MeC(CH2SBu)3] for the selective hydrogenation of dimethyl oxalate to methyl glycolate is reported.

The synthesis and X-ray structure of the first cobalt carbonyl-NHC dimer. implications for the use of NHCs in hydroformylation catalysis.

The synthesis, X-ray structure, and catalytic properties of the first cobalt carbonyl dimer supported by a N-heterocyclic carbene ligand Co(2)(CO)(6)(IMes)(2) [IMes = 1,3-bis(2,4,6-trimethylphenyl)imidazol-2-ylidene] is reported.