The experiment explores the technology of fresh date fermentation with Lactobacillus pl1antarum, which using fresh date raw material and fermenting through Lactobacillus plantarum to convert part sugar in date to lactic acid, improving date storage, ameliorating date flavour, increasing a new product of date.

In this paperglobal homeomorphism solutions of a Beltrami equation with the complex dilation q (z) satisfy above conditions and solutions of a kind of two dimensional singular integral equationswith the coefficient q (z) were obtained.