Studies on the emission rates of plants VOCs in China;

The emission characteristics, emission rate and its diurnal variation of one of the main Mediterranean macchia (Pistacia lentiscus) in Noak’s Ark reserve, Sardinia, Italy have been studied using Dynamic Sampling and GC-MS method.

The emission rate increases with irradiation and temperature.

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.