Now showing items 11-20 of 728
Assessing the catalytic effect of coal ash constituents on the CO2 gasification rate of high ash, South African coal
The catalytic effect of inorganic species, within the ash, on the CO2 gasification of three South African coals containing similar carbon-structural properties (elemental, structural and petrographical properties) was ...
Revival of unsuccessful chemotherapeutics for highly glycolytic cancers?
Around 90% of cancer deaths can be ascribed to metastases , usually highly glycolytic. Rodent models are used when developing drugs to attack these cancers
An integrated self-sensing approach for active magnetic bearings
Self-sensing permits active magnetic bearings (AMBs) to consolidate the actuation and sensing functions into a single electromagnetic transducer. Eliminating the position sensing device as well as interfacing reduce potential ...
Self-sensing for electromagnetic actuators. Part 2. Position estimation
The second paper in a two part series presents the position estimation scheme for an 8-pole heteropolar active magnetic bearing (AMB). The integrated self-sensing assembly comprises a nonlinear MIMO parameter estimator ...
A practical quantification of blood glucose production due to high-level chronic stress
Blood glucose (BG) is the primary metabolic fuel for, among others, cancer cell progression, cardiovascular disease and inflammation. Stress is an important contributor to the amount of BG produced especially by the liver. ...
Investigating leakage and bypass flows in an HTR using a CFD methodology
An area that has been identified as significantly important in the development of a high temperature reactor (HTR) is the prediction of leakage and bypass flows. It is therefore essential to understand the influence of ...
Volatile trace element behaviour in the Sasol® fixed-bed dry-bottom (FBDB)™ gasifier treating coals of different rank
Trace element simulation and validation of model predictions for the elements Hg, As, Se, Cd and Pb have recently been undertaken for the Sasol® FBDB™ gasification process operating on lump coal. The validation was conducted ...
Self-sensing for electromagnetic actuators. Part 1. A coupled reluctance network model approach
A self-sensing arrangement in active magnetic bearings (AMBs) comprises a single electromagnetic transducer to realize the actuation and sensing functions concurrently. Minimizing the number of sensing devices and associated ...
Coal cleaning residues and Fe-minerals implications
In the present investigation, a study was undertaken to understand the origin of Fe-minerals presents in Brazilian coal mining and to understand the environmental implication and the chemical heterogeneity in the study ...
CFD applications in the Pebble Bed Modular Reactor Project: a decade of progress
Of all the systems and components that have to be designed for a nuclear plant, the Reactor Unit is the most significant since it is at the very heart of the plant. At Pebble Bed Modular Reactor (Pty) Ltd. (PBMR), the ...