Experiment Study on the Effect of Aluminum Sulfate-Based Alkali-Free Accelerator and the / on Cement Hydration and Leaching.

The alkali-free accelerator based on aluminum sulfate is widely used in shotcrete in tunnels. Long-term Ca-leaching of shotcrete may adversely affect the tunnels in a water-rich mountain. It is necessary to examine further the impact of the AS accelerator and / on cement hydration and leaching.

[Producing Ad-IFN gamma by suspension culture of HEK293 cells in a disposable bioreactor].

Adenovirus vectors are promising delivery systems for gene therapy. We established a new process for clinic trial of recombinant adenovirus vectors using a novel disposable bioreactor. The suspension HEK293 cells were inoculated into a 5 L disposable bioreactor with parameters control of pH, DO, agitation and temperature.

First-principles calculation of the conductance of a single 4,4 bipyridine molecule.

The conductance of a single 4,4 bipyridine (44BPD) molecule connected to two gold electrodes is calculated using a density functional theory based Green function method. The atomic geometry of such a molecular junction is constructed from the optimized structure of a gold trimer-44BPD-gold trimer complex. Resonant conduction is the main feature of its transport properties.