Micro-gradient structured PAN sub-micro fibrous membrane with high-efficiency air purification performance was fabricated via one-step free surface electrospinning with large-scale yield, firstly demonstrated as air filters.
The TiO2/amorphous carbon composite, with narrower band gap caused by oxygen vacancy, doping carbon and bridging hydroxyls, has good visible light property. In the photodegradating RhB process, hole and superoxide radical are the main active species.
A water and mildew proof SiO2 and ZnO/silica sol superhydrophobic composite coating was prepared by a one-step method and applied to a circuit board. The preparation method is simple and inexpensive, and convenient for large-scale preparation.
SummaryFactor VIII can be isolated from plasma proteins, including fibrinogen by chromatography on agarose. The best results were obtained with Sepharose 6B. Large scale preparation is also possible when cryoprecipitate is separated by chromatography. In most fractions containing factor VIII a turbidity is observed which may be due to the presence of chylomicrons.The purified factor VIII was active in vivo as well as in vitro.
The long chain polyprenols composed of 30 and more isoprene units from leaves of plants belonging to the genera Potentilla and Rosa have been described. They occur in the form of fatty acid esters. The composition of polyprenol mixture was species dependent and its content reached ca. 0.5% wet weight. Large scale preparation of individual polyprenols from a natural polyprenol mixture was performed using time-extended liquid chromatography on the hydrophobic gel Lipidex-5000.Key words: long chain polyprenols, Rosaceae.
One-step collagenase method for zona pellucida removal in unfertilized eggs: easy and gentle method for large-scale preparation