They were identified as 3β-hydroxyergosta-5,7,22-triene(1),ergosta-4,6,8 (14),22-tetraen-3-one(2),integric acid(3),1-hydroxyl-6,8-dimethoxy-3-methyl-anthraquinone(4),3,9-ihydroxy-6,8-dimethoxy-3-methyl-3,4-dihydroanthraeen-1 (2H)-one(5),3β-hydroxyl-5α,8α-epidioxyergosta-6,22-diene(6) and D-allitol (7).

A research on acid hot-pressure oxidation pretreatment of a certain refractory gold concentrate;

A new technology of bright acidic electroless Ni-P alloy plating;

Analyzing the Cause of Erxun's Acid Water and Resolving Way;

Use maize without germ as raw material and acid as a disposal reagent, the effect of reducing sugar content on acid reagent, moisture of material, acid density, extrusion temperature and speed of screw were studied .

These reviewed methods are addition of scale inhibitors, addition of acid and water softening.

The phenomenon of acid fingering in pad acid fracturing treatment directly affects acid distribution, effective distance, fracture conductivity.

This paper presents the selection standards of preflush and acidizing fluid used in deep acid-fracturing for high temperature carbonate reservoir.

On the determination of acid content by second-time derivative;

Topological study of refractive index of acids and phenols;

Effect of APA on crystallization in acids decomposition phosphate rock process;