According to the condition that water content ratio of the loose sandstone reservoir increase highly during late production and the characteristic of macromolecular compound ST glue,the paper made experimental study.

This paper has studied the changes about tensile strain hardening exponent (n-value) in three kinds of ST steels by testing n-values and found changing tendency of them.

Relations between ST-segment resolution and myocardial tissue perfusion in patients with acute myocardial infarction and treated by primary percutaneous coronary intervention;

Relationship between severity of coronary artery disease, its prognosis and ST-segment depression on anterior wall during acute inferior wall myocardial infarction;

The appreciation of short term and long term cardiac vent value of maximum ST-segment elevation (maxSTE) after interventional therapy in the patients with acute ST-segment elevation myocardial infarction (STEMI);