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1.
为制定中国中青年男性红细胞压积参考值的统一标准提供科学依据.收集了中国462个单位用温氏法测定的34383例健康中青年男性红细胞压积参考值,用曲线回归分析的方法研究了其与海拔高度之间的关系.发现随着海拔高度的逐渐增大,中青年男性红细胞压积参考值按指数规律也在逐渐的增大,相关性很显著(R=0.903);推导出了一个曲线回归模型Y∧=44.8×1.000066x±6.0.如果知道了中国某地的海拔高度,就可用回归模型估算这个地区的中青年男性红细胞压积参考值.  相似文献   

2.
为制定中国健康老年前期女性红细胞压积参考值(温氏法)的统一标准提供科学依据,研究了中国191个单位测定的9556例健康老年前期女性红细胞压积参考值(温氏法)与5项地理因素的关系.发现海拔高度是影响老年前期女性红细胞压积参考值(温氏法)最主要的因素,随着海拔高度的逐渐增大,老年前期女性红细胞压积参考值(温氏法)也逐渐增大.用数学回归方法推导出了一个多元回归方程,如果知道了某地的地理因素,就可以用这个回归方程,估算这个地区的红细胞压积参考值.依据红细胞压积参考值(温氏法)与地理因素的依赖关系,把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等六个区.  相似文献   

3.
为制定中国老年前期男性血沉正常参考值的统一标准提供科学依据,收集了中国281个单位用温氏法测定的23517例健康老年前期男性血沉正常参考值,用曲线回归分析的方法研究了其与海拔高度之间的关系。发现随着海拔高度的逐渐增高,老年前期男性血沉正常参考值按指数律逐渐减少,相关性很显著(R=0.660);推导出了一个曲线回归模型:Y=14.17e-0.000294x±3.30。结论是如果知道了中国某地的海拔高度,就可以用该回归模型估算这个地区的老年前期男性血沉正常参考值。依据老年前期男性血沉正常参考值与地理因素的依赖关系把中国分为青藏区、中部区、东部区3个区。  相似文献   

4.
为制定中国老年前期男性红细胞压积参考值的统一标准提供科学依据,收集了中国各地用温氏法测定的健康老年前期红细胞压积参考值,并与其与地理因素的关系进行了研究,发现海拔高度是影响老年前期男性红细胞压积参考值最主要的因素,随着海拔高度的逐渐增加,老年前期男性红细胞压积参考值也在逐渐的增大,相关性很显著,用逐步回归分析的方法推导出了一个回归方程,如果知道了中国某地的地理因素,就可以用回归方程估算这个地区的老  相似文献   

5.
为制定中国健康老年前期女生红细胞压积参考值的统一标准提供科学依据,研究了中国191个单位测定的9556例健康老年前期女性红细胞压积参考值与5项地理因素的关系,发现海拔高度是影响老年前期女性红细胞压积参考值最主要的因素,随着海拔高度的逐渐增大,老年前期女性红细胞压积参考也逐渐增大。  相似文献   

6.
目的:为制定中国老年前期女性红细胞比积正常参考值的统一标准提供科学依据。方法:收集了中国229个地区用温氏法(W introbe)测定的17562例健康老年前期女性红细胞比积正常参考值,并对其与地理因素的关系进行了研究。结果:发现海拔高度是影响老年前期女性红细胞比积正常参考值最主要的因素,随着海拔高度的逐渐增大,老年前期女性红细胞比积正常参考值也在逐渐的增大,相关性很显著(P=0.000)。用因子分析的方法推导出了一个回归方程:Y^=49.0 0.00250x1-0.00116x2-0.0861x3-0.00376x4-0.0000160x5±3.8结论:如果知道了中国某地的地理因素,就可以用回归方程估算这个地区的老年前期女性红细胞比积正常参考值。依据老年前期女性红细胞比积正常参考值与地理因素的依赖关系把中国分为青藏区,西南区,西北区,东南区,华北区,东北区等六个区。  相似文献   

7.
老年男性红细胞压积参考值与中国地理因素的关系   总被引:1,自引:0,他引:1  
为制定中国老年男性红细胞压积参考值的一标准提供科学依据,收集了中国各地用温氏法测定的健康老年男性红细胞压积参考值,并对其与地理因素的关系进行了研究,发现海拔高是影响老年男性红细胞压积参考值最主要的因素,随着海拔高度的逐渐增大,老年男性红细胞压积参考值也在逐渐增大,相关性很显著。  相似文献   

8.
为制定中国中老年男性红细胞压积参考值的统一标准提供科学依据,收集了中国各地用温氏法测定的健康中老年男性红细胞压积参考值,并对其与海拔高度的关系进行了研究,发现随着海拔高度的逐渐增大,中老年男性红细胞压积参考值也在逐渐增大,相关性很显著.用一元回归分析的方法推导出了一个回归方程.如果知道了中国某地的海拔高度,就可以用回归方程估算这个地区的中老年男性红细胞压积参考值.  相似文献   

9.
为制定中国中年男性红细胞压积参考值的统一标准提供科学依据,收集了中国各地用温氏法测定的健康中年男性红细胞压积参考值,并对其与地理因素的关系进行了研究,发现海拔高度是影响中年男性红细胞压积参考值最主要的因素,随着海拔高度的逐渐增大,中年男性红细胞压积参考值也在逐渐的增大,相关性很显著.用多元回归分析的方法推导出了一个回归方程.如果知道了中国某地的地理因素,就可以用回归方程估算这个地区的中年男性红细胞压积参考值.依据中年男性红细胞压积参考值与地理因素的依赖关系把中国分为青藏区、西南区、西北区、东南区、华北区、东北区等6 个区.  相似文献   

10.
为制定中国中老年男性红细胞压积参考值的统一标准提供科学依据,收集了中国各地用温氏法测定的健康中老年男性红细胞压积参考值,并对其与地理因素的关系进行了研究,发现海拔高度是影响中老年男性红细胞压积参考值最主要的因素,随着海拔高度的逐渐增大,中老年男性红细胞压积参考值也在逐渐的增大,相关性很显著.用多元回归分析的方法推导出了一个回归方程.如果知道了中国某地的地理因素,就可以用回归方程估算这个地区的中老年男性红细胞压积参考值.依据中老年男性红细胞压积参考值与地理因素的依赖关系把中国分为青藏区,西南区,西北区,东南区,华北区,东北区等6个区  相似文献   

11.
Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.  相似文献   

12.
The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.  相似文献   

13.
王慧 《科技信息》2008,(10):240-240
Wuthering Heights, Emily Bronte's only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.  相似文献   

14.
The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3~4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰~ -7.8‰, PDB) and matrix dolomites (-6.6‰~ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084~0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078~0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.  相似文献   

15.
何延凌 《科技信息》2008,(4):258-258
Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women's language from these perspectives: pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women's language, more attention should be paid to language use in social context. What's more, the linguistic phenomena in a speaking community can be understood more thoroughly.  相似文献   

16.
Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.  相似文献   

17.
以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.  相似文献   

18.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

19.
理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。  相似文献   

20.
Quality traits in wheat (Triticum aestirum L.) were studied by quantitative trait locus (QTL) analysis in a recombinant inbred line (RIL) population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross (ChSh). Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.  相似文献   

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