查询词典 period of a function

With the method, tendency of measured value was analyzed, harmonic mode was checked by using autocorrelation function, the relation between spectrum parameters was analyzed and Fourier coefficient was calculated based on the theory of Fourier series. Finally, the significance of every period was tested and dominant period determined so as to establish the prediction model.

首先对实测序列进行趋势项分析；其次用自相关函数进行谐波模式检验；然后根据函数的傅立叶级数展开理论，分析谱参数之间的函数关系，计算傅氏系数；最后采用F分布检验法对周期进行显著性检验，确定主要周期，从而建立预报模型。

Window period risk is a function of the length of the window period and the frequency of new infections among donors Incidence can be measured among repeat donors by observationOther methods are necessary to measure incidence in first-time donors: if the incidence differs, then overall risk estimates must be adjusted.

窗口期风险是献血者窗口期长度和新发感染频率的作用可在重复献血者中通过观察计算发生率必须采用其他方法检测首次献血者中的发病率：如果发病率不同，那么对整体风险的估计必须加以调整。

On the basis of pollen analysis of surface sample in North China, polynomial function analysis method was applied to establish pollen climate response surface of Pinus, Betula, Quercus, Artemisia, Chenopodiaceae, Compositae, Picea, Ephedra, Gramineae in North China, therefore an easy and applicable method for reconstructing palaeoclimate and palaeoenvironment with data of fossil pollen was founded; Multi-analysis method was applied to analyse the principal elements of surface sample pollen in central Inner Mongolia Steppe, the assemblages of surface sample pollen in steppe area and its relationship with vegetation type were discussed with helps from spore-pollen analysis of a peat section in Chasuqi, Inner Mongolia and 〓C chronometer, fossil pollen data were obtained with high resolution on the peat section in Chasuqi. Vegetation succession and environmental changes since Holocene at resolution of 70 years were primarily reconstructed in south Mount Daqingshan and Plain Tumete. The changes in the area were copmared with those in the neighbouring areas during the same period. It was found that Holocene environmental change had undergone the following stages: cold-arid, temperate-wet, warm-wet, temperate-arid and cold-arid, and the climatical optimum period occurred in 5000-4100 aB.

本文在对中国北方表土花粉研究的基础上，采用多项式函数回归方法建造了中国北方松属、桦属、栎属、蒿属、藜科、菊科、云杉属、麻黄属、禾本科等的花粉——气候趋势面，从而为利用化石花粉资料直接恢复古气候、古环境提供了一种方便易行的方法；采用多元分析方法对内蒙古中部草原区表土花粉进行了主成分分析，探讨了草原区表土花粉组合的规律及与植被类型的关系；本文还应用孢粉分析方法，结合〓C测年技术，通过内蒙古中部察素齐泥炭剖面高分辨率的化石花粉数据，初步恢复了大青山山地南部及土默特平原地区分辨率为70年的全新世以来植被演替和环境变迁的状况，并与邻近地区的全新世古气候、古环境进行了对比研究，研究发现，本区域全新世古环境的变迁序列基本上可以与周围地区及华北地区进行对比，其环境变迁经历了凉干～温湿～暖湿～温干～凉干的变化，且气候最适宜期出现在5000～4100aB.P。

Key words］ asthma;eosinophil;lung-function;trachea inflammation ; acute-outbreak period;catabatic period

关键词］哮喘；嗜酸粒细胞；肺功能；气道炎症；急性发作期；缓解期字串2

Key words］ asthma;eosinophil;lung-function;trachea inflammation ; acute-outbreak period;catabatic period

关键词］哮喘；嗜酸粒细胞；肺功能；气道炎症；急性发作期；缓解期

Key words］ asthma;eosinophil;lung-function;trachea inflammation ; acute-outbreak period;catabatic period

关键词］哮喘；嗜酸粒细胞；肺功能；气道炎症；急性发作期；缓解期来源&岁月联盟&

The application of clotting drug is one of the important factors for recovery of transplanted pancreatic function. Jejunostomy is an important therapeutic measure to prevent the reflux of intestinal juice to the transplanted pancreas in perioperative period. In the follow-up period cathartic drugs are recommended to prevent constipation and reduce the occurrence of acute pancreatitis caused by intestinal fluid reflux.

凝血药物的应用是移植胰腺功能恢复的重要因素之一，空肠造瘘是围手术期预防肠液向移植胰腺返流的重要治疗措施，且移植后随访期建议应用通便药物，预防便秘发生，减少肠液返流引起的急性胰腺炎的发生。

As a whole the effective assess ment index of intraoperational monitor had been established, providing reference for the lumbar spondylolisthesis surgery.Taking the SEP index value of postanesthetic patients before operation as the standard, the changes of intraoperational potential may indicate the following status: The latency period decreasing in 10%-15% or the amplitudes increasing in 40% indicated that the outlook of recovery was good enough and the prognosis was favoured.The latency period decreasing in less than 10% or the amplitudes increasing in less than 30% indicated that part of the function could be reduced.

以患者术前以及麻醉后的SEP指标值为基础，术中监测电位指标变化表现形式：①滑脱复位后，若潜伏期缩短10％～15％或波幅增加＞40％，提示预后良好；②监测电位指标平稳，或潜伏期缩短＜10％，或波幅增加＜30％，可继续完成复位，术后可有部分功能恢复和症状改善；③在复位过程中，监测电位指标出现暂时性波动，可在15～20min内恢复到基础电位，应在电位出现波动时停止复位，术后仍可恢复部分功能和改善症状。

To discuss mobile period rachitic and the relation with RAI, the author reachs humoral immunity function to have observation to the cellular immunity of 92 AR little patient, sum up an analysis to be as follows now. 1 object and method 1.1 objects rachitic little patient sets 92 mobile period for observation group, diagnose all accord with castigatory of group of coordination of scientific research of countrywide rachitic prevention and cure diagnosed a standard 1980. 92 in male 52, female 40, the age 3 months ~1 year old 48, 1~3 year old 39, 3 years old of above 5. 56 examine as a result normal children is set to contrast group, normal value 50%, among them male 34, female 22, the age 6 months ~3 year old.

为探索活动期佝偻病的免疫状态及和RAI的关系，笔者对92例AR患儿的细胞免疫及体液免疫功能进行观察，现总结分析如下。1对象及方法1.1对象92例活动期佝偻病患儿设为观察组，诊断均符合1980年全国佝偻病防治科研协作组修订的诊断标准。92例中男52例，女40例，年龄3个月~1岁48例，1~3岁39例，3岁以上5例。56例检验结果正常的儿童设为对照组，正常值50%，其中男34例，女22例，年龄6个月~3岁。

The dose of rHuEPO began to decrease in A group after eighth week, which had distinctive difference with that of B group (P.05). In A group , the dose of rHuEPO was just two thirds of that in B group during the sustain period.6. The kidney function of two group patiences was stable or improved during the treatment period ,which of A group was improved distinctly after treatment.

两组药物都能使患者肾功能好转或稳定，A组治疗后与用药前比较有非常显著性差异(P.01)，B组治疗后较治疗前有改善但无统计学意义；治疗结束后两组间比较有显著性差异(P 。05)，A组优于B组。

Panorama Many people are dancing in a large sitting room.

在一个大客厅里，许多人在跳舞。

We fully understand how a microwave oven cooks food, it is first necessary to talk ...

我们充分理解一个微波炉煮的食物，这是首先要谈。。。