测定时间

This study measured the isovolumic contraction time , isovolu-mic relaxtion time and ejection time of CCP group and normal contrast group. Late,tei index was calculated, relationship between Tei index and LV function index such as ejection fraction ,the ratio of transmitral peak velocity at early diastole to transmitral peak velocity at late diastole etc.

本研究通过对正常对照组与肺心病病例组使用频谱多普勒超声心动图测量ICT、IRT、ET时间计算Tei指数，观察肺心病左心室Tei指数变化并分析其与超声测定的心功能指标EF、E/A等相关性，探讨Tei指数评价肺心病左心室整体功能的价值。

Methods Radionuclide ambulatory renography and color Doppler renal hemodynamics were studied in 30 patients with esential hypertension and left ventricular hypertrophy and 21 healthy control group. The glomerular filtration rate,renal index and the distribution of intrarenal artery were investigated.The resistive index, the systolic peak velocity,andthe low diastolic flow velocity and acceleration time of theintrarenal arterial flow were measured. Results Compared with control group the density of intrarenal artery of patients with esential hypertension and left ventricular hypertrophy were significantly decreased.

对30例高血压伴左室肥厚病人及21例年龄相当的健康人对照组行核素动态肾功能检测及彩色多普勒超声肾血流动力学检查，测定肾小球滤过率和肾脏指数及肾内动脉分布，段动脉、叶间动脉的阻力指数，血流峰速加速时间，收缩期最大血流速度，舒张期末最低血流速度。

To do the experiment repetitively, shortened the hydrolytic time to determine the hydrolytic ratio.

我们选取12号作重复实验，缩短水解时间，进行水解率的测定。

In this paper, as a case of Karamay, we have studied on space-time changement of soil quality in oasis of arid area. We measured quality for different land use types and years in same type by combinativing field sampling for Karamay in Xinjiang and analysis in laboratory, which is directed by former theory of soil quality. Then we did integrated evaluation of soil quality for different land use types, and had drew some conclusions as followed: In four land use types, the soil bulk density of layers(0～15cm) for farmland and tree land is bigger than the other land use types.The organic matter of every layer in manpower Tamarix Bulrush land is bigger; organic matter of Tamarix Bulrush land release efficiency nitrogen which result ration of C/N is higher; total nitrogen of all layers in farmland variety great as being effected by mass use of nitrogen in agriculture; deadwood and defoliation of tree、shrub and bulrush pooled in 5cm layer to result that quick nitrogen is the biggest among all layers. The total salt of nature shrub tree land for every layer being bigger than farmland explain that nature shrub thee land strongly stand salt and farmland for basification in this area; that the nutrient of face layer is bigger than the ground layer may be explained by that vegetation gather nutrient to be stored in deadwood and defoliation.

本文对以克拉玛依为例，对干旱区绿洲土壤质量的时间空间变化进行研究，在有关土壤质量的研究理论指导下，通过田间调查取样和室内分析相结合的方法，对新疆克拉玛依市农业开发区的不同土地利用方式及同一土地利用方式下不同利用年限土样土壤理化性质进行测定，从而对新垦绿洲不同土地利用类型土壤质量进行综合评价，结果如下：四种土地利用方式中，农地、乔木林地表层(0-15cm)土壤容重较大；各土层人工柽柳芦苇地的土壤有机质含量均较大；柽柳芦苇地的有机质在矿化过程中所释放出有效氮，导致柽柳芦苇地的C/N比例较高；受到农业耕作使用大量氮肥的影响，农地各土层全氮含量变异较明显；乔木、灌木及芦苇的枯枝落叶主要集中在5cm范围之内，导致几种土地利用方式类型下该层土壤速效氮最大；天然灌木林地的土壤总盐在各层均较大，其次是农地，说明天然灌木林地的高耐盐能力，以及该区农业生产用地的土壤盐碱化程度较重。

The experimental parameters such as pH value of buffer solution, scan rate, accumulation time and surfactant type were optimized.

优化了测定条件，即介质的pH、扫描速度、富集时间和表面活性剂的种类等。

"We have milked CAE for most of the cost reduction we are going to get," says Jeff Schloss at the National Human Genome Research Institute in Bethesda, Maryland, US, which funds Ju's work.

尽管这种方法非常有效，但是需要昂贵的仪器和试剂来配合进行，如果要在同一时间内对384个序列片断进行测定，就需要更为快速而廉价的方法。

Aim To provide some basis for SDT to dispose tumor at different position by determining the distribution of HpD in tumor bearing mouse.

目的 通过测定血卟啉在荷瘤小鼠体内的分布，为声动力疗法处理不同部位肿瘤的时间点提供依据。

The precision offlow time of suspension was up to 10~(-3) second, and coefficient of variation was lowerthan 0.3%.

粘度测量中流动时间测定的精度达到10~(-3)秒，相对标准偏差小于0.3%。

Based on the boundary condition and temperature diffusivity determined sectionally, the heating time obtained from calculation is con...

根据金相组织观察及硬度分布测定，确定了45钢的加热系数k=0.9，40Cr钢的k=1.0，T10钢的k=1.0，并指出这三种钢均不需要保温时间。

Taking the single base 9/7 propellant as an example, the mathematical model of the self-ignition of propellant is established through testing the self-ignition time under different conditions of the environment temperature.

以单基9/7发射药为例，发射药热自燃的数学模型通过实验测定不同环境温度下的自燃时间建立。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。