Luminescent lead sulphide (PbS) nanoparticles embedded in an amorphous silica (SiO2) matrix were synthesized at room temperature by a sol-gel process. The prepared nanocomposite materials were crushed into powders and ...

English: Soils vary at all levels of observation. When describing soil physical or chemical properties we initially think in terms of homogeneous material. However, for characterizing the land use ability it is necessary ...

Waste generation is a widespread phenomenon around the world, of which the majority is disposed by landfilling. In landfills, waste constitutes an integral part of the hydrological system, and thus poses a threat to ...

English: An Environmental Impact Assessment (EIA) determines the economic, social and environmental impacts of proposed developments. Environmental Impact Assessment reports are complied by independent consultants in order ...

English: The general principles of the law of agency form the basis of representation in South African company law. A unique set of agency principles have however developed in company law as a result of specific needs that ...

English: This research is concerned with the complex situation in which the youth of the Christ Church Lahore find themselves. One of the key problems is that the youth do not have a sound knowledge of the Bible, which ...

Maize is the dominant staple crop in most regions of Africa. The nutritional value of maize protein, however, is deficient in the essential amino acids such as lysine and tryptophan. This study was conducted to (1) investigate ...

English: The potential for the widespread contamination of groundwater by Dense Non-aqueous Liquids (DNAPLs) in South Africa is substantial, because of the extensive production, transport, utilisation, and disposal of large ...

English: A series of ferrocene-containing tris-β-diketonato aluminium(III) complexes of the form Al(FcCOCHCOR)3 (R = CF3, CH3, C6H5, Fc with Fc = ferrocenyl) were synthesized and subjected to structural and electrochemical ...

Despite the well known fact that photolysis of free phenolic catechins give rise to isomerisation at the C-2 position (e.g. (-)-cis epicatechin converts to the sterically less hindered (-)-trans isomer), researchers have ...