Multi-walled carbon nanotubes modified by covalent grafting of poly(2-vinylpyridine) (CNT-g-P2VP) form stable dispersions in good solvents for P2VP, including water at low pH. The positively charged P2VP shell allows the immobilization of the CNTs onto oppositely charged surface. Deposition of CNT-g-P2VP from aqueous dispersions at low pH is an effective method to prepare homogeneous ultra-thin...

The interaction between an ablating shocklayer and radiative heat transfer to a surface, such as occurs on an ablating hypervelocity re-entry vehicle, is poorly understood. Ablative products act as absorbers and emitters, the net effect of which is strongly dependent on gas composition, enthalpy and wavelength. This paper presents the results of an experimental study investigating radiation in ...

Low temperature heating systems for single-family houses, based on heat pumps are becoming progressively more preferable in the global market. The possibility of such systems to optimise the energy utilisation and to achieve a high annual energy efficiency make them more promising for future low energy houses. In this study we model and analyse the performance of a low temperature heating syste...

Mercury is a global pollutant that is ubiquitous in the environment. Enrichment of mercury in the biosphere as the result of human activities and subsequent production of methylmercury (MeHg) has resulted in elevated concentrations in fish, wildlife and marine mammals globally. Elemental mercury (Hg0) is the most common form of mercury in the atmosphere, and the form that is most readily transp...

The rehabilitation ol' thc Xinavane sugar factory in Mozambique necessitated a redesign of the evaporator station. The particular arrangement at Xinavane proved to be extremely sensitive to changes i n operating parametcrs. Using this evaporator station as an example, the concept of design robustness (suitability under a range of operating conditions) is introduccd. A rigorous evaporator simula...