Recently, permeable geotextile tubes in conjunction with prefabricated horizontal drains (PHDs) have become increasingly popular for dewatering high water content slurries or sludge. However, how to analyze the consolidation process of sludge tube so as provide a proper design and prediction becomes technical challenge. In this paper, we proposed two-dimensional plain-strain model under combine...

We report the engineering of Lactococcus lactis for the efficient conversion of sugar into diacetyl by combining NADH-oxidase overproduction and alpha-acetolactate decarboxylase inactivation. Eighty percent of the carbon flux was found to be rerouted via alpha-acetolactate to the production of diacetyl by preloading the cells with NADH-oxidase before their use as a cell factory.

In the Virtual Computing Laboratory (VCL) users request a computing resource (e.g., a blade) and customized software (an “image”). The software is loaded onto the blade from an image server. If loading is performed at the time of the request, the user experiences a delay before s/he can access the blade. This delay may be several minutes long, depending on the type of image requested. A “preloa...

Vacuum preloading coupled with prefabricated vertical drains (PVDs) has been widely used to improve the property of dredged slurry. However, effect PVD layout on slurry consolidation characteristics remains poorly understood. This study conducted two vacuum model tests—with single and dual PVDs. Particle image velocimetry (PIV) was directly observe displacements strain paths. The test results r...