Study on kinetics of nitrogen release in some ureabased slow release compound fertilizer;

A primary study on modeling nitrogen release from organic manure;

The simulation models including submodels of mineralization of soil organic nitrogen and nitrogen release from straw decomposition of organic nitrogen were developed.

Effect of different soil environmental factors on N release rate of compound modified mineral coated urea;

Based on release speed and behavior of the isooctane from the pre-swollen particles,the influences of t.

If the capsule's quality can't meet the demand,the excessive rapid release speed of the breaker would lead to the fracture fluid viscosity premature descending and inducing the failure of work.

The result demonstrates that the implanted helium can be preserved for a long time in nanocrystal titanium films and its release speed is affected by the ion implantation energy, the thickness of nanocrystal titanium films and the helium concentration in nanocrystal titanium films.

The release rate of soil K under the condition of various successive extraction;

Probabilistic distribution model for release rates of H_2S in sour gas wells of Sichuan and Chongqing areas

The relationship of sustained release rate in vitro of nattokinase tablets to other skeletal materials used,such as the amount of HPMC and PVP,and types of diluents,such as MCC,was studied.