Profile distribution of exchangeable calcium and magnesium in an aquic brown soil as affected by land use type.;

The contents of exchangeable calcium and magnesium in Hunan tobacco-growing soils and their effects on tobacco quality;

Discussions on the determination methods of exchangeable calcium,magnesium and potassium in south acid soil;

The results indicated that it is feasible to synthesize 4A zeolite by the use of NaY pregnant liquor;the composed products with excellent indexes reached the requirements of washing assistant,calcium exchange is more than 300 and the pH value is less than 11.

E-4031 enhanced Ca~(2+) transient and ventricular myocytes contraction via reverse mode Na~+/Ca~(2+) exchange in normal and hypertrophic rats;