Based on its good water solubility, temperature resistance and environmental protection, oligosaccharides are widely used in food beverage, baking medical care. In view of the poor lubrication performance drilling fluid ultradeep wells, long horizontal wells highly deviated problems protection faced by lubricants, application is limited. Therefore, order to reduce limitations improve applicatio...

It is well-documented that certain oxides (such as Re2O7, B2O3, MoO3, V2O5, etc.) can provide friction coefficients of 0.1-0.3 to sliding surfaces at elevated temperatures and thus they are often referred to as lubricious oxides in the tribology literature. In a recently proposed crystal chemical model, Erdemir was able to establish a close correlation between the reported friction coefficients...

PURPOSE Hydroxypropyl guar (HPG) and hyaluronic acid (HA) have been individually shown to improve dry eye symptoms. The purpose of this in vitro study was to assess the potential benefits of a new lubricant eye drop formulation containing the demulcents propylene glycol and polyethylene glycol and an HA/HPG dual polymer in models of the human corneal epithelium. METHODS Cultured human corneal...