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This study determined the effects of acute ischemia on the monophasic action potentials,ventricular fibrillation inducibility and defibrillation.

本文在离体灌流兔心脏标本上测定了急性心肌缺血对单相动作电位各参数以及心室颤动诱发和除颤的影响。

The monophasic models include secretion theory, electro osmotic theory, osmotic theory and osmotic standing gradient theories.

单相模型包括分泌理论、电渗理论、渗透理论和渗透持续梯度理论。

Taking monophasic creepage protector as example, this paper states the causation of its several mistake connections, puts forward specific improvement measurements in allusion to its different mistaken installation methods.

本文以单相漏电保护器为例,阐明其几种错误接线的原因,并针对其不同的错误安装接线方法,提出了具体的改进措施。

METHODS: Dogs (n=16) were randomly divided into 2 groups: the control (n=7) and the CHF group (n=9) induced by rapid right ventricular pacing at 240 pulsemin^(-1) for 4 to 5 weeks. The electrophysiologic parameters were evaluated by the technique of standard electric stimulation and monophasic action potential recording.

16只犬随机分为正常对照组(n=7)和CHF组(n=9),应用右心室快速起搏240 pulsemin^(-1 4-5周制作CHF犬模型,应用心脏电刺激和单相动作电位记录技术测定心室生理指标。

The monophasic models advocate a unidirectional water flow, taking the whole symplast of root as a semi permeable membrane.

单相模型不强调水流方向,基本上只将根中的共质体作为一层连续的半透膜看待。

Results Among the 52 cases, 30 cases were confirmed to fibrosarcomas, which were identical with primary dingnoses;22 cases were revised to malignant fibrous histocytoma (8 cases), malignant nerve sheath tumor (4 cases), monophasic spindle cell synovial sarcoma (3 cases), leiomyosarcoma(3 cases), rhabdomyosarcoma(2 cases) and abdominal desmmoid tumor (2 cases). Of the 18 cases, only two cases were misdiagnosed and were revised to malignant fibrous histocytoma and spindle cell synovial sarcoma, respectively.

结果:1980年前52例中维持原诊断30例,修改诊断22例(42.3%),分别为恶性纤维组织细胞瘤8例、恶性神经鞘膜瘤4例、单相性梭形细胞滑膜肉瘤3例、平滑肌肉瘤3例、横纹肌肉瘤2例、韧带状纤维瘤2例;1980年后纤维肉瘤18例中,维持原诊断16例,修改诊断2例(11.1%),分别为恶性纤维组织细胞瘤和滑膜肉瘤各1例。

In isolated hearts, perfusion of CCh shortened the duration of the monophasic action potential and effective refractory period of the left atrium and lowered the atrial fibrillation threshold.

在离体心脏,灌注卡巴胆碱缩短左房的单相动作电位间期和有效不应期,降低房颤阈值。

Then the nitrogenation conditions from acicular γ-Fe〓O〓 to single phased γ'-Fe〓N and the key parameters affecting γ'-Fe〓N formation are investigated.

第一次获得由针状γ-Fe〓O〓得到单相γ'-Fe〓N的氮化条件,阐述了影响γ'-Fe〓N生成的关键工艺参数;并用磁性测量研究了产物的磁性。

The permanent magnets of single-phase exchange coupling Nd 〓N〓 and Nd 〓N〓 with ThMn〓 structure have been prepared by MM and MA process and the following treatments of crystallization、nitrogenation. By means of XRD、SEM、TEM、DTA/DSC and magnetic measurements, the variations of microstructure in each corresponding stage and the related magnetic properties have been studied systematically.

本文采用机械合金化和机械研磨法及随后的晶化、氮化处理分别制备了具有ThMn〓结构的Nd〓N〓单相耦合及Nd〓N〓纳米永磁材料,借助于X射线衍射、扫描电镜、电子探针、透射电镜、差热分析以及磁测量等分析技术系统地研究了上述工艺各阶段对应的组织结构的变化以及它们与磁性能的相互关系。

In this paper, with domain analysis method for reactive power in nonsinusoidal, the formulas of apparent power and power factor both in nonsinusoidal and asymmetric conditions are describled.

本文从单相非正弦波形下无功功率的时域分析定义出发,导出三相不对称时视在功率的公式,从而获得非正弦波形又不对称下三相功率因数的计算公式。

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