Depending on jurisdiction and on type of collateral, a perfection of security interest may expire after a certain period (limitation period effects).

根据担无误的权限和种类，担保利益的完善可能在一定时期之后终止(有限期间有效)。

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Objective: To assess the short period effects on the systolic function of left ventricular of reperfusion therapy in acute myocardial infarction (AMI) by quantitative tissue velocity imaging (QTVI).

目的：应用定量组织速度成像技术（QTVI）测定急性前壁心肌梗死（MI）后不同时段左室的收缩功能，评价再灌注治疗对急性前壁MI患者左室收缩功能的短期影响。

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Over this same period concern about possible effects of exposure to environmental toxins, including pesticides and heavy metals, has become ever more pervasive.

FORBES: What Caused A Billion Dollar Federal Study Of Child Health To Implode?

Still, the Economist offers some reason for hope, suggesting that perhaps the effects of the information technology remain to be seen, and we are in a gestation period during which the positive economic effects have yet to appear.

FORBES: The Economist: Innovation Almost Dead. Perhaps Not So In Electricity

Comparable store sales for Tiffany increased 9% worldwide during the fourth quarter compared to the same period last year, including effects from currency exchange rates.

FORBES: Tiffany 4Q Profit Beats With Stronger Global Sales, Projects Japan Loss