查询词典 biased sample

The results of catalytic activity show that both Ni-B and Ni-P sample have the same kinetic equation for hydrogenation of 1, 3-cyclopentadiene to cyclopentene and the same TOF. Therefore, it can be suggested that they have the similar active site. The catalytic activity of Ni-B sample is higher than that of Ni-P sample, and it is due to the more active sites of Ni-B sample having.

催化活性测试表明，Ni-B与Ni-P催化环戊二烯加氢反应对环戊二烯具有相同的动力学方程，而且两者具有相似的氢转换频率，表明两者的活性中心本质上是相似的，类金属不同导致的电子转移方向的不同仅仅影响反应的初活性，宏观活性的差别在于两者活性中心数量的不同。

PPAR γ agonist displayed obvious renoprotective action,the mechanism was complicated, it could improve the metabolism of glucose ang lipid, depress blood preasure, protect small vessels endothelium,improve the system activity of blood clotting and fibronolysis, antiinflammation, otherwise the action was more obvious with the time passed, at the early stage the effective was better,so encourage the patients to take the medicine earily; when the patients with the mediate reanl function failure, Avandia did not display significantly renoprotective action, side reaction had no difference compared to the control group,was not necessary to regulate the dose of Avandia.But because of the sample size was small, we needed a biger sample to confirm the results. We confirmed that Prol2Ala had no difference in control case,diabetic nephropathy group and diabete group,In diabetic group and diabetic nephropathy group, Ala carriers compared to noncarrier all kinds of biochemical indicators were not different,Prol2Ala did not have association with diabete and diabetic nephropathy. But because of the sample size was small, weneeded a biger sample to confirm the results.

PPARγ激动剂对糖尿病肾病具有明显的保护作用，保护作用的机制是多方面的，除了改善糖脂代谢，降低血压外，还具有保护小血管内皮，改善凝血和纤溶系统活性，抗炎症等多方面的作用，且作用随着用药时间的延长而日趋明显，在疾病的早期应用效果更佳，故提倡早期用药；对伴有慢性肾功不全的患者，罗格列酮对肾脏靶器官的保护作用显现的并不明显，但副作用与对照组无明显差异，不用根据肾功情况调整用药，但由于样本量较小，上述结论尚需大样本进行进一步证实；本实验研究得出Prol2Ala变异在健康对照组、糖尿病组及糖尿病肾病组均无显著差异，糖尿病组及糖尿病肾病组临床各生化指标与Prol2Ala变异亦无相关性，Prol2Ala与糖尿病及糖尿病肾病不相关。

The dose of γ-irradiation had significant influences on shelf life of boiled dumplings under chill state. The value of volatile basic nitrogen of control sample excessed the trade standard after one week. The value of total acidity of control sample excessed the trade standard after four weeks.However ,except TBA of sample treated with 5 kGy excessed the trade standard after irradiation, other properties of treated sample were all well within the acceptable level throughout storage period.

未辐照处理产品贮存至 7 天时挥发性盐基氮含量超标，除 5kGy 辐照产品的 TBA 值在贮存前期超标外，其他各辐照处理产品各项安全质量指标在 21 天贮存期内均未超标；与对照样比，剂量越高，所分析指标变化越小；对照样只有 7天的货架期；2 和 3kGy 辐照在 14 天时感官评分值降至可接收值底限；4kGy 表现出最佳贮藏效果，可获得 21 天的货架期。

This system can not only manages many batches of data, but also produces the code automatically, creates the random inner sample according to the percent, inserts the manipulative sample and standard sample, calculates the inner qualified rate and the offering rate, protracts the chart of standard sample quality control in time, imports and exports the inner data, and outputs the artistic analysis report according to the user.

系统不仅可以同时管理多个批次样品的数据，也可以自动实现样品编码、内检样按指定比例随机生成、地调局监控样和国家标准样插入、内检合格率和报出率计算、标准样质量实时监控图绘制以及对送样单和分析结果等进行自动导入和导出，还可以根据用户的需要输出美观的分析报表。

We prepared sample l, sample 2 with singlecoil. and sample 3, samPle 4 with two series coils. In this paPer we discussed thefrequency-dependence of theis inductance,resistance and quality factor in arange of l00MHz-l0GHz.

本实验中制作了单个线圈的样品1和样品2以及串联的样品3和样品4，文中报告了这些薄膜电感的电感、电阻和Q值在100MHz-10GHz范围内的频谱特性。

The paper presents a new filling-sample method by which the sample quantity filled in a box depends on the energies of γ-rays to be measured. The detection efficiencies of HPGe detector were calculated by using Monte-Carlo method for various γ-ray energies and at various soil sample quantities in a box, and the optimal filling-sample quantities for different-energy γ-rays from radioactive nuclides of 238U, 232Th, 226Ra, 40K, are respectively obtained.

本文提出了样品装量与待测γ射线能量有关联的装样方法，并用蒙特卡罗方法模拟计算了不同能量γ射线的探测效率与样品装量之间的关系，得到用HPGe γ谱仪分析238U、232Th、226Ra和40K等放射性核素活度各自的最佳装样量。

1 The reasons there are two main expressions for "population" and "sample"" is that one is "biased estimator and the other is not.

"母体"与"样本"之所以有两种表达公式，是因为一个是有偏估计，另一个则不是。

It's a biased sample, but I still think it is worth the struggle.

这难免有失偏颇，但我还是觉得值得一试。

We have, however, collected the considered views of a lot of people and we think that, even given the problems of a biased sample, they give valid information and lead to conclusions that could guide useful research and give a wake-up call to teachers and parents of left-handed children.

不过，我们已收集了审议意见，有很多人，我们认为，即使考虑到的问题有偏见的样本，他们给有效信息，并导致结论可以指导有益的研究，并敲响了警钟教师和家长的左手儿童。

The main research work in this paper is as follows:(1) A detailed analysis about the theory of the SVM is given in the paper. And one framework of the Network Fault Diagnosis System based on SVM in network Application Layer is proposed. The handle process and the function, mechanism of the components of this framework are discussed in the paper.(2) When the size of the training sets is uneven, the classification error rate of the results based on the traditional C-Support vector machine is undesirably biased with the less sample in the training sets.

由于故障诊断是有限样本学习问题在实际中的体现，因此可以将支持向量机方法引入到网络应用层的故障诊断中来，本文涉及的内容主要包括：(1)详细深入的分析了支持向量机的理论特点及其与网络应用层故障诊断的关联，并就构建的基于支持向量机的网络应用层故障诊断模型，阐述了该模型的处理流程以及其中各个模块的功能、机制。

Molecular Distillation is a kind of high vacuum distillation method, which is suitable for the separation of high boiling, heat sensitivity and viscidity products.

分子蒸馏技术是一种在高真空条件下进行的连续蒸馏过程，适合于分离高沸点、热敏性及具有生物活性的混合物。

They are to the Noughties what yuppies were to the Eighties .

那在六十年代是时髦的，但在八十年代肯定是过时了