筛法

Objective:Analysis of screening results of three neonatal diseases to further clarify the incidence of phenyl ketonuria,congenital hypothyroidism and glucose-6-phosphate dehydrogenase(G6PD) deficiency in Hainan Province.

目的：对海南省新生儿疾病筛查情况进行分析，了解海南省新生儿苯丙酮尿症、先天性甲状腺功能低下症、葡萄糖6-磷酸脱氢酶缺乏症(G-6-PDD)的发病率。方法：对出生72h后的7412名新生儿采集足跟血制作血滤纸干标本，PKU筛查采用荧光定量法检测滤纸干血斑中Phe含量；CH筛查采用时间分辨荧光免疫法检测滤干血斑中TSH含量；G6PD缺乏的筛查采用荧光斑点定性试验测定G6PD活性。

Several methods to solve this problem appeared since the NFS was first introduced in 1988 by Pollard.

自数域筛法提出以来，出现了几个解决此问题的方法。我们分析比较这些方法，优选出Montgomery-Nguyen的方法。

In prime number distributed research process,and through established one kind of new sieve method and the stair theory,this article obtained about three group of prime number distribution recurrence formula: The 1st is not bigger than x the prime number integer recurrence formula;The 2nd is not bigger than x the twin prime integer recurrence formula;The(3rd Recurrence) formula.

在研究素数分布过程中，通过创立一种新的筛法与台阶理论，得到关于素数分布的三组递推公式：不大于x的素数个数与孪生素数对数量的递推公式；不大于x的孪生素数个数的递推公式；任意偶数x≥6表为两个奇素数之和与孪生素数对数量对数的递推公式。

Moreover, a birthday sieve method is introduced to decrease the complexity of the precomputation.

而且，引入一种新的生日筛法以降低预计算的时间复杂度。

Stemming from the water sieve analysis method, a test method of CPA was proposed.

由水筛法得到启示，提出了一套水泥净浆结粒的检测方法。

Stemming from the washing sieve, a test method of cement paste agglomeration was proposed.

由水筛法得到启示，提出了一套水泥净浆结粒的检测方法。

A new generating circuit on five-level M-sequence based on the cut-join sieve method,which can generate 2048 different five-level M-sequence s.

敌我识别系统的核心技术之一是询问信号与应答信号的加密传输，针对信号传输中对密码的要求，文中引入了伪随机码，基于剪接筛法设计了能产生2048个两两相异的5级 M序列的电路，并对该电路进行了仿真，仿真结果验证了该设计的正确有效性

We determined the composition of soil aggregates with dry sieved method, and analysed fractal dimensions of soil aggregates and the effect factors.

根据植被和土壤类型，从黄土高原不同地域分别采集22个0~20 cm土层土壤样品，利用干筛法测定其结构体组成，分析土壤结构体分形维数及其影响因子。

In this paper,the SMO-type lithium ion sieve was the main research object,the manganates and lithium salts were taken as the main raw materials.Two LISs with high uptake capacity,better selectivity and stable structure were successfully prepared by hydrothermal method and coprecipitation method based on the discussion of correlation between Li+ uptake performance and the preparation conditions of LIS precursors.The effects of preparation conditions on Li+ uptake were also investigated.

本文以SMO型锂离子筛为研究对象，以锰盐和锂盐为主要原料，在采用固相法探讨离子筛前驱体制备条件与离子筛提锂性能关系的基础上，分别采用水热法、共沉淀法为主要合成方法，成功制备了具有高提锂容量、选择性好及结构稳定的两种锂离子筛材料，并研究了合成条件对材料制备及提锂性能的影响。

With the consideration of various factors affecting on the screening effect,a screening model for drilling fluid shale shaker had been established.

利用流体力学的基本原理，对钻井筛筛面上钻井液的流动特点进行了研究；在综合考虑有关参数对钻井筛筛分影响的基础上，建立了钻井筛的筛分模型，给出影响钻井筛处理量有关因素之间的定量关系；运用平均值法对筛分方程的求解进行了探讨；应用有限差分方法建立了筛分方程的仿真模型，并编写了钻井筛处理量的计算机仿真程序。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐