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目的 在日立7600型全自动生化分析仪上以和光、朗道试剂进行患者标本血清铁测定的对比研究和偏倚评估,其中朗道试剂用德国罗氏c.f.a.s校准品校准,对患者标本分别测定.方法 依据美国国家临床实验室标准协会(NCCLS)EP9-A文件,每天取临床标本8 份,分别用两个厂家试剂测定标本血清铁,共测定5天,记录检验结果,对两种试剂进行偏倚评估.结果 在进行患者新鲜血清标本血清铁测定时,两种试剂测定结果的预期相对偏倚为1.50%,两种试剂测定的浓度结果的线性回归方程为Y=0.218030X+0.971541,相关系数R2=0.99907,在方法的线性范围内可以被接受,实验室数据的配对t检验结果显示,P>0.05差异无统计学意义;测定不同的质控品,不同厂家试剂及应用不同校准品,测定结果相对偏倚最大为4.85%.结论 和光及朗道两种试剂在测定患者标本血清铁时,测定结果的相对偏倚在线性范围内能被接受,在测定不同的质控品时,其相对偏倚不大(<5%).由此可见,两种试剂都可作为任意检测的试剂,但当实验室内同一项目存在两种或两种以上分析试剂检测时,需对其进行对比分析和偏倚评估,对这些项目在分析系统间的偏倚有了准确的评价管理依据,才能保证检测结果的准确稳定. 相似文献
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对肝肾疾病进行转铰蛋白(Transferren简称TF)和铜蓝蛋白(Ceruloplasmin简称CP)测定,结果表明:各组肝炎病人的TF均显著低于正常组,且谷丙转氨酶异常和HBsAg阳性者TF含量明显低于正常者,TF可作为判断肝病预后的一个指标。肾炎病人的TF也比正常人低,CP含量各组不一,肝癌患者的CP(52.44±8.73mg%)显著高于正常人(46.75±7.92mg%),乙型肝炎病人和正常组间未见差异.肝豆状核变性患者CP非常显著低于正常人,故检测CP有助于鉴别肝硬化和肝癌,同时对临床诊断肝豆状桉变性提供一项可靠的客观指标. 相似文献
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简要介绍了硬骨鱼类起源与早期演化研究的最新进展。斑鳞鱼等早期硬骨鱼类化石的新发现将有助于认识硬骨鱼类起源与早期演化的型式。提出该研究方向今后应注意的几个问题 相似文献
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信息资源管理四大矛盾问题研究 总被引:16,自引:0,他引:16
信息资源作为信息社会的重要资源使人们对信息资源管理高度重视,但是在信息资源管理的实践中却产生了一系列难题。探讨研究网络信息的自由性与科学性、信息庞杂与个性化需求、信息共享与信息保密及全球信息化与信息鸿沟这四对矛盾的复杂性,提出了可能的解决方案。 相似文献
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中国扁平多孔菌属(Poria)的初步研究 总被引:2,自引:0,他引:2
赵继鼎 《中国科学院研究生院学报》1964,9(3):299-304
There are about 18 species of Poria hitherto known from China. In the present
paper 37 species are reported, of which 27 are new records to China. So at present the
genus has a total of about 45 species known to China. The specimens examined were
collected from 9 provinces during the past ten years, The generic delimitation in the
present paper is taken in the sense of Overholts (1942) and Lowe (1946) and identi-
fication of species is chiefly based on their works.
All the materials cited are deposited in the Mycological Herbarium of the Institute
of Microbiology, Academia Sinica, Peking.
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赵继鼎 《中国科学院研究生院学报》1964,9(2):139-166
Parmelia is a genus of economical importance. According what was recorded,
Meyen & Flotow were the first foreigners to study Chinese lichens in 1843. Up to the
present time 74 species, 24 varieties and 11 forms have been described from China.
The majority of specimens reported in this paper were collected by many Chinese
botanists and collectors from 21 provinces from 1928--1962, while a few of them were
collected by Licent from 1916 to 1917 and by Poliansky in 1957.
The system of classification adopted here is that held by A. Zahlbruckner in 1926.
But in section Hypotrachyna, the two subsections-Myelochroa and Myeloleuca proposed
by Asahina are adopted and Parmelia xanthocarpa which has not been properly placed
before, is here referred to the subsection Myelochroa.
In the subgenus Hypogymnia the writer discovers that the length of spores of two
species are longer than 10μ, especially Parmelia macrospora reaches 17.5μ long. So
far as the writer knows, the upper limitation of the spore length recognized by many
lichenologists has been 10μ in this subgenus. The spore measurement of this subgenus
needs, therefore, to be revised in future.
In this paper 78 species, 14 varieties and 6 forms are presented. Among them, 5
species, 5 varieties and 1 forms are considered as new and two new combinations have
been made. Out of all these, 31 species, 6 varieties and 2 forms are first recorded from
China. All the materials cited are deposited in the Mycological Herbarium of Instituteof Microbiology, Academia Sinica, Peking. 相似文献
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王海鸿 《科学.经济.社会》2002,20(4):40-44
旅游业是较易发生波动的行业。本文对旅游业的波动程度与宏观经济与其他产业的波动程度作了比较研究,发现旅游业的波动程度非常高。将旅游业的波动作了类型划分,并且分析了影响旅游业周期波动的因素。 相似文献
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知识服务研究应避免的四大误区 总被引:1,自引:0,他引:1
知识服务是图书情报机构在知识经济时代的必然选择,但在理论研究中存在许多的误区,必将使知识服务流于形式,失去其实际意义。本文分析进入误区的原因,并就如何走出误区提出了建议。 相似文献