查询词典 test-tube

In whole test process, to compared with control group, hepatic hepcidin gene expression of test group on different phases had obviously differences with retinoic acid was administered. On early phase of test group , relative gene expression contents of hepcidin were gradually fall and the lowest level was on 8th、9th、10th day, then the hepcidin level gradually was ascendent. The curve was like a cavate parabola.

在实验周期内，模型组与对照组比较，肝脏铁调素基因表达在维甲酸灌胃的不同时间，存在明显差异：早期5、6、7天铁调素基因相对表达量逐渐下降，在第8、9、10天达到较低值，随后有回升，呈现凹陷的抛物线变化趋势；而对照组基本处于水平的轻微波动变化。

The common method, that all strong-correlation terms of the model are eliminated, can bring the loss in the engineering application, so the new method is proposed that the identified model reserves some correlation. The augmented matrix A is constructed by the outputΔW and the matrix S. The"determinating order based on ratio of determinant"is brought out to screen the strong-correlation terms in the structure identification. The latent root estimation is improved in screening the eigenvalues and eigenvectors. Thus the estimation precision is improved greatly.The consistence check of guidance instrument error coefficients of flight test and ground test is the purpose of flight experiment. The causes of inconsistency of the two models are analyzed. The hypothesis test of linear regression model based on F statistics is proposed to check the consistence.Finally, the instability of error coefficients is probably caused by the change of the flight environments, therefore, the relation between the error coefficients and flight environment is analyzed. The approach is presented to identify SINS guidance instrument error models and compensate the error in the segmented sections corresponding to the change of vertical acceleration of aircraft.

在结构辨识中，常用的方法由于将模型中的强相关项全部剔除而给工程应用带来损失，因此，本文提出了新的有益思想，即在保留一定相关性的基础上进行辨识：将输出向量ΔW与环境函数矩阵S构成增广矩阵A，然后采用"比定阶行列式"来剔除相关向量的方法，这样既可以尽可能多地保留了对落点影响大的强相关参数，又可以对落点影响小的强相关参数给予剔除；在参数估计中，改进了特征根估计中特征根和特征向量的筛选方法，提出"近零"准则，从而大大提高了参数估计的精度；再者，鉴于天地模型"一致性"检验是飞行试验和SINS制导工具误差系数分离的主要目的，因此，本文又深入分析了造成天地模型不一致的原因，提出了采用基于F统计的线性回归模型假设检验方法来进行捷联制导工具误差模型的天地"一致性"检验；最后，鉴于飞行环境剧烈变化可能会对惯性仪表误差系数稳定性带来一定的影响，因此本文深入地分析了SINS制导工具误差系数与外界环境的关系，提出了基于过载变化大小的分段辨识和分段实时补偿的算法。

Finally, we present the instruments test method, results of BERT and results of simulation and test of signal integrity according to our design of gigabit backplane test system.

最后结合我们设计的千兆位背板测试系统，给出了仪器测试方法，误码率测试结果和信号完整性的仿真和测试结果。

NMath Stats contains a data table class with functions for computing descriptive statistics, such as mean, variance, standard deviation, percentile, median, quartiles, geometric mean, harmonic mean, RMS, kurtosis, skewness, and many more; PDF, CDF, inverse CDF, and random variable moments for a variety of probability distributions, including normal, Poisson, chi-square, gamma, beta, Student's t, F, binomial, and negative binomial; Combinatorial functions, such as factorial, log factorial, binomial coefficient, and log binomial; Multiple linear regression; Basic hypothesis tests, such as z-test, t-test, and F-test, with calculation of p-values, critical values, and confidence intervals; One-way and two-way analysis of variance and analysis of variance with repeated measures; Multivariate statistical analyses, including principal component analysis and hierarchical cluster analysis.

nmath统计包含一个数据表的阶层与职能计算描述性统计，如平均，方差，标准差，百分位，中位数， 25 ％，几何平均数，调和的意思是，有效值，峭度，偏度，还有更多的； PDF格式，民防部队，逆民防部队，并随机变量矩的各种概率分布，包括正常，泊松，卡方检定，伽玛，测试版，学生的吨，男，二项式，并负二项分布；组合的功能，例如阶乘，日志阶乘，二项式系数，并登入二项式；多元线性回归；基本假设测试，如的Z测试， t检验， F检验，计算p值，临界值，和置信区间；之一，双向和双方法方差分析和方差分析与反复的措施；多元统计分析，包括主成分分析和聚类分析。

In this paper, univariate or/and bivariate binormal model was established and its parametrers was estimated by the"method of scoring". To calculate the statistical significance of the difference between two ROC curves using any one of three distinct statistical tests: the bivariate Chi-square test, the area z-score test, and the TPR z-score test.

本文探讨了单变量、双变量双正态ROC模型的构建及其参数的最大似然估计方法；采用双变量卡方检验、真阳性率z检验、面积z检验三种方法比较了ROC曲线间是否具有显著性差异。

Biuret test A test for the presence of proteins, in which sodium bydroxide is added to the test solution, followed by drops of 1% copper sulfate solution.

双缩脲试验：鉴定蛋白质存在的试验。在待检测溶液中加入氢氧化钠，然后滴加1％硫酸铜溶液。

After 21 days, the local histological and immunological effect were investigated by muscle stimulation test, lymphocyte blastogenesis test and cytotoxicity test.

植入21天后分别采用肌肉刺激实验，刀豆蛋白A诱导的脾淋巴细胞转化实验和补体依赖性细胞毒实验分析生物衍生骨对动物机体局部组织的影响和免疫功能的影响。

Taroko Blood Orange is introduced from Italy, through a decade hardworking, it has gradually become the unique product in the southern part of Sichuan, with big fruit, thin skin, less seeds, rich juice, stable production, the product passed the audit of crops of Chongqing in 2003; won the excellent standard test issued by the Quality Test Center of Citrus and Nursery Stock in Agricultural Ministry in April, 2006, also in April of 2006, by test, the announcement from Food QC Center of Agricultural Ministry said that the product enjoys environment friendly standard.

项目简介：塔罗科血橙新系产品原种由意大利引进，经近10年的选育逐步形成为具有川南风味的特色品种，具有果实较大，皮薄，少核优质，香甜汁多，丰产稳产等特点，产品2003年通过重庆市农作物品种审定，产品2006年4月经农业部柑桔及苗木质检中心检测品质达极优标准，产品2006年4月经农业部食品质量监测中心检验产品质量符合无公害食品标准。

Six kinds of superior Leguminosae and grasses including Sweet pea , partridge pea , Utah sweet vetch , meadow brome , yellow bluestem and cambar bluegrass are introduced from the Western and Middle parts of USA with similar climate to the Loess Plateau according to the theory of similarity of climate. The experiments are focused on adaptability, regularity of growth and development, eco-economic values, and technique and model of cultivation of the introduced plants, following the procedure of primary test, regional test and production test.

按照"气候相似论"的观点，选择与黄土高原生态条件较为接近的美国中西部地区，引进了多年生香豌豆、美丽鹧鸪豆、犹他甜苕子、牧场草、黄兰沙梗草、康巴早熟禾等6种优良水土保持草本植物，按照"初选试验—区域性试验—生产性试验"的程序，对引进植物的物候、抗性、生长发育规律、生态经济价值、栽培技术等进行系统研究。

On the basis of the test results of a full scale hot state explosion test a calculation and analysis was conducted of the explosion pressure of the following: square box test parts, nodular cast iron boiler, grey cast iron boiler and grey cast iron boiler plates.

基于一次大规模热态爆破试验的结果，分别对方箱试件、球墨铸铁锅炉的爆破压力、灰口铸铁锅炉和灰口铸铁锅片的爆破压力进行了计算和分析，得出安全系数选取的推荐值。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。