On two-phase modeling of dewatering pulp suspensions

An experimental study of the dewatering of wood-pulp fiber suspensions by uniaxial compression is presented, to rationalize their dewatering dynamics within a two-phase framework. Twenty-seven pulp suspensions are examined, encompassing materials with different origins, preparation methodologies, and secondary treatments. For each suspension in this library, the network permeability and compressive yield stress are calibrated at low rates of dewatering. Faster compressions are then used to verify that a solid bulk viscosity is essential to match two-phase model predictions with experimental observations, and to parameterize its magnitude. By comparing the results with a suspension of nylon fibers, we demonstrate that none of the wood-pulp suspensions behave like an idealized fibrous porous medium. Nevertheless, the properties of pulp fiber networks can be reconciled within a two-phase framework, and comparisons made between different wood-pulp suspensions and between wood-pulp and nylon fibers, by appealing to potential microstructural origins of their macroscopic behavior.     

Special issue on emergence in human-like intelligence toward cyber-physical systems

Neural Computing and Applications -     

Using strategic management practices to promote participatory democracy in Australian local government

Strategic management was introduced as a critical component of Australian local government reform during the 1990s. In addition to encouraging efficiency and effectiveness of operation, it was also intended to promote participatory democracy within local authorities. The paper explores the extent to which this objective has been achieved through an analysis of twenty-five New South Wales municipalities. Discussion concludes that while strategic management has enhanced community involvement in local governance, it cannot be a substitute for traditional democratic processes.     

Comparing the post-WWII publication histories of oceanography and marine geoscience

Scientometrics - Oceanography and marine geosciences are closely related subjects, though they have had differing influences. The UK, which has experienced the financial benefits of North Sea oil...     

The Application of a Nuclease Enzyme to Clean Stubborn Soils and Odors in Laundry

The inclusion of a nuclease, a new-to-laundry enzyme class in detergent formulations, reduces the concentration of recalcitrant soils on dirty clothing. Nucleases target extracellular DNA that, albeit present in minor quantities in soiled laundry items, disproportionately contributes to the accumulation of sebaceous soils and other compounds that affect the appearance of clothes. These lingering soils accumulate over multiple wear cycles and provoke a dingy appearance in clothing, characterized by dull colors, yellow staining, and an unpleasant malodor. The single and continued use of a nuclease in detergent formulations offers increased removal of these recalcitrant soils to produce less malodorous and visually preferred textiles. Furthermore, the nuclease is effective across different detergent forms, as well as in cotton short washing cycles, enabling improved cleaning in more sustainable laundry washing conditions.