Another preferred cationic surfactant is an C6-C18 alkyl or alkenyl ester of an quaternary ammonium alcohol, such as quaternary chlorine esters. More preferably, the cationic surfactants have the formula X−[(N+R1CH3CH3)—(CH2CH2O)nH], wherein R1 is C8-C18 hydrocarbyl and mixtures thereof,...
The conjugation of drugs with nanoparticles represents an innovative approach for controlled and targeted administration of therapeutic agents. Nanoparticle-based systems have been tested for the inner ear therapy, increasing the drug diffusion and being
dosage of accelerator is 7%, the mechanical strengths of the cement mortar is the highest. This is attributed to the fact that when the dosage of accelerator increases from 0% to 7%, a large amount of Al3+and SO42−is increased by polyaluminum sulfate hydrolysis in the accelerator, ...
Widespread use of phosphorus and chlorine toxins, which cause long-term harmful effects on the ecosystem, is one of the most important factors causing the eutrophication of water, the risk to the life of microorganisms, and damage to the respiratory tract and central nervous system of animals [...