查询词典 electrets

Effect of negative electrets enhancing cell growth and increasing cell surface charge was in proportional to the surface potential of electret.

2成纤维细胞表面负电荷和S期内细胞数的增加量与驻极体的表面电位成正比。

The effect of negative electrets on apoptosis was in proportion to the time and electric field intensity.

驻极体诱导成纤维细胞凋亡的效应与作用时间和场强呈正相关性(P.05)。

The presence of space charges has an important effect on the performance of solid dielectrics.Sometimes it is favorable in the case of electrets and bioelectrets; sometimes it is disastrous in thecase of electrical insulation.

固体介质中的空间电荷对其性能有重要的影响，它有有利的一面，比如在驻极体和生物电介质中，也有不利的一面，比如在电气绝缘领域。

Objective: To study the influence of negative electrets on apoptosis of fibroblast cells and to probe its mechanism.

目的：研究负电晕充电的聚四氟乙烯驻极体对成纤维细胞凋亡的影响及其调控机制。

Methods: Fibroblast cell were treated with -300,-500 and -1 000V PTFE electrets for 24, 48 and 72 h, respectively, and the influence of negative electrets on cell apoptosis was studied by means of flow cytometry and transmission electron microscope.

选用-300、-500和-1 000 V PTFE驻极体作用于成纤维细胞24、48和72 h，利用流式细胞仪和透射电子显微镜研究负极性驻极体对成纤维细胞凋亡的影响。

Methods: Electrets Teflon PTFE,±300 V,±1 000 V were used to treat 3T3 cells for 24, 48 and 72 h. Then the influences of electrets on cell cycle and surface charge of 3T3 cells were studied by flow cytometry and electrophoresis, respectively.

选用±300 V和±1 000 V驻极体分别作用成纤维细胞24、48和72 h，用流式细胞术和细胞电泳技术测定成纤维细胞的生长周期和细胞表面电荷。

Objective: To study the changes of intracellular free Ca2+ levels in 3T3 cells induced by electrets and discuss the relationship between electrets induced apoptosis of 3T3 cells and the changes of free Ca2+ levels.

目的：研究驻极体对3T3细胞内游离Ca2+浓度变化的影响，探讨驻极体诱导3T3细胞凋亡与游离Ca2+浓度变化之间的关系。

The piezoelectric activities of the porous PTFE electrets mainly depended on the charge storage ability of the electrets themselves.

研究结果指出：(1)常温下，多孔PTFE驻极体的准静态压电系数d33随充电时间的延长而增加，并呈现出线性区、非线性区和饱和区三个区间，多孔PTFE驻极体的压电活性主要依赖于这类材料的电荷储存能力。

Results: Compared with control group, apoptosis cells increased from 0.5%to 10%(some even to 15%) after 24,48 and 72 h action of -300,-500 and -1 000 V electrets. After action of -500 V PTFE electrets for 48-72 h, fibroblast cells showed characteristic morphological features of apoptosis. These features included chromatin aggregation, nuclear and cytoplasmic condensation and partition of cytoplasm and nucleus into membrane bound-vesicles.

结果：-300、-500和-1 000 V驻极体作用成纤维细胞24、48和72 h以后，与对照组相比，成纤维细胞的凋亡量从0.5％增至10％（部分可达15％）；驻极体作用成纤维细胞48～72 h，出现细胞凋亡特有的形态学特征，即：细胞异染色质边集，细胞裂解，可见凋亡小体。

Results:（1）After the action of electrets, 10%of 3T3 cells appeared apoptosis.(2) After the action of electrets in 3T3 cells, the free Ca2+ levels in cellular plasm were increased. The increasement of Ca2+ levels was caused by the Ca2+ inflow from outside cell, rather than the release of calcium pool inside cell.

结果：(1)负极性驻极体作用3T3细胞后，3T3细胞出现10％的凋亡量；(2)驻极体作用3T3细胞以后，细胞质游离Ca2+浓度升高，Ca2+浓度的升高不是由于细胞内钙池的释放，而是由于细胞外Ca2+内流所引起。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了