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1.
为探讨缺氧缺血性脑病发病机制与血液流变学的关系,对19例新生儿缺氧缺血性脑病(NHIE)和16例正常新生儿进行血液流变学综合指标对照观察。结果显示:患病组的血浆比粘度(ηp)、红细胞变形指数(TK)、红细胞聚集指数(RAI)、微循环滞留时间(MST)、纤维蛋白原(Fib)、血栓形成系数(TFL)均高于对照组,差异有非常显著性意义(P<0.01)。血液粘度(ηb)及还原粘度(ηr)也比正常组高(P<0.05)。红细胞压积(Hct)两组对照无显著性差异(P>0.05)。表明新生儿缺氧缺血性脑病存在着血液高粘滞,其主要原因为红细胞的聚集性增高和变形能力下降,以及血浆纤维蛋白原增加。  相似文献   

2.
苦丁茶降血脂作用的研究   总被引:8,自引:0,他引:8  
对实验性高血脂小鼠分别用1.2%和2.4%的苦丁茶水灌胃45d后,取尾血测定其血清总胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白胆固醇(HDL-c)含量和卵磷脂胆固醇酰基转移酶(LCAT)的相对活性,并计算出低密度脂蛋白胆固醇(LDL-c)和极低密度脂蛋白胆固醇(VLDL-c)浓度及动脉硬化指数(AI),并与绞股蓝茶的降脂作用进行比较。结果表明,饮用苦丁茶可以明显降低实验性高血脂小鼠的TC、TG和LDL-c、VLDL-c(P<0.01或P<0.05),显著升高HDL-c含量及HDL-c/TC(P<0.01或P<0.05),而作为阳性对照的绞股蓝茶组HDL-c与高脂组比较无显著差异.二个苦丁茶组与绞股蓝茶组的LDL-c/HDL-c及LCAT相对活性均与高脂组有显著差异(P<0.01),与对照组则无明显差异。由此说明,苦丁茶具有降血脂、防治动脉粥样硬化的作用,提示苦丁茶的降脂机理与其能够升高LCAT相对活性有关。  相似文献   

3.
采用PAGE法检测F3的Hb、Tf、Hp,Pr,Alb、Po、LDH、Akp和Amy等基因座的多态性和相关分析。研究结果表明,F3的Hb、Tf、Hp、Akp呈多态,Alb、Pr、Pr、Po、LDH、Amy呈单态;LDH同工酶相对活力顺序为LDH1>LDH3>LDH2>LDH4>LDH5;F3与安哥拉山羊Akp基因型分布差异显著(P<0.05),与建昌黑山羊差异极显著(P<0.01);平均基因杂合度安哥拉山羊最高,F3次之,建昌黑山羊最低,F3与安哥拉山羊的遗传相关系数大,遗传距离小;LDH1的相对活力与净毛率呈极负相关(P<0.01),LDH5与两型毛根数百分比呈显著正相关(P<0.05)、与两型毛重量百分比呈极显著正相关(P<0.01)、、与无无髓毛伸度呈极显著负相关(P<0.01),LDH其他各要带的相对活力与产毛性状无显著相关。  相似文献   

4.
榆黄蘑对小鼠血乳酸,血尿素,乳酸脱氢酶影响的实验研究   总被引:3,自引:0,他引:3  
以小鼠为实验材料,研究榆黄蘑发酵液对血乳酸、乳酸脱氢酶(LDH)、血尿素(BUN)的影响。结果表明,与对照组比较,服用榆黄蘑发酵液25d的小鼠剧烈运动停止后50min,血乳酸含量降低32%(P<0.05);乳酸在血液中的清除速率提高19.5%(P<0.01);血清LDH活性提高11.6%(P<0.05)。BUN增量降低65%(P<0.05)。实验结果提示榆黄蘑有较好的抗疲劳作用。  相似文献   

5.
本实验选用NIH小鼠,随机分成Ⅰ、Ⅱ、Ⅲ三组,用环磷酰胺建立小白鼠再生障碍性贫血动物模型.实验结果显示:出血时间Ⅰ(对照)组(1.58±0.15)min,Ⅱ(环磷酰胺)组(5.23±0.27)min,Ⅲ(环磷酰胺+止血散)组(1.57±0.1)min;统计学处理表明Ⅱ与Ⅰ组间有差异(p<0.05),Ⅱ与Ⅲ组间有差异(p<0.05),Ⅰ与Ⅲ组间无差异(p>0.05);血块回缩分别为完全、不良、完全,血小板计数分别为430.2±34.36×10 ̄9L ̄(-1),284±19.96×10 ̄9L ̄(-1),465.4±22.48×10 ̄9L ̄(-1).统计处理表明Ⅱ与Ⅰ组间和Ⅱ与Ⅲ组间存在显著性差异(p<0.01),Ⅰ与Ⅲ组间无差异,本实验提示:中药制剂止血散能促进血小板的生成和血小板的释放,具有止血作用.  相似文献   

6.
对7头一岁龄健康黑白花乳牛的14个腕关节内注射两性霉素B(12.5mg/关节),成功诱发急性浆液性腕关节滑膜炎(ASCS).注射前及诱发关节炎后(注射后48h)分别抽取正常及炎性腕关节滑液(SF)样品,同时采集血液样品待检,检测结果表明:乳牛ASCS时,SF中细胞总数(TCC)、总蛋白(TP)、乳酸脱氢酶(LDH)、碱性磷酸酶(ALP)、γ-谷氨酰转肽酶(γ-GT)、蛋白及LDH同功酶各组分含量均显著增加(P<0.01);蛋白及LDH同功酶各组分百分含量(%)显著改变:白蛋白(A)显著降低(P<0.01),α、β、γ球蛋白均显著升高(P<0.01),A:G值(白/球比)显著下降(P<0.01),LDH1显著下降(P<0.01),LDH2、LDH3、LDH4、LDH5增加,但差异不显著(P>0.05),以上各成分的对应血清值均无显著变化(P>0.05).关节滑液(SF)的检测为乳牛关节炎症提供了准确诊断方法和依据,并可揭示关节在病理状态下的代谢状况,具有重要的临床指导意义.  相似文献   

7.
半乳糖亚急性致衰老模型的研究   总被引:3,自引:0,他引:3  
以6~8周龄雄性BALB/C小鼠为实验对象,研究半乳糖亚急性致衰老动物模型,并观察其对免疫功能的影响,皮下注射半乳糖100mg/kg·d,40d后发现,致衰组与对照组相比,脑MAO-B活性升高57.9%(P<0.01);肝SOD活性下降17.2%(P<0.05);心肌脂褐素含量增高48.3%(P<0.01),而且各项指标均与老年组(17月龄)非常接近(P>0.05).致衰组与对照组相比,对巨噬细胞吞噬功能,迟发型过敏反应,溶血素的产生,免疫器官的重量均无显著影响(P>0.05).表明这种亚急性致衰老模型可以用作筛选抗衰老药物和食品的生化指标的研究,而不能作为研究免疫功能的亚急性致衰老模型。  相似文献   

8.
高原型和山谷型藏山羊生态特征比较研究   总被引:2,自引:2,他引:2  
对高原型和山谷型藏山羊的体态、被皮、解剖、生理和生化遗传标记等生态特征的比较研究表明:高原型比山谷型藏山羊体格较大;毛被白色者较多、毛丛较长、单位皮肤面积次级毛囊较多,产线量高;气管、肺和心脏较发达;血液中RBC、WBC、Hb均较高;体温、皮温均较低,两型藏山羊的Hb、Alb、Am经电泳均显示一条带,无多态性,高原型藏山羊的Tf有3种基因型,即AA、AB、BB,而山谷藏山羊Tf只有两种基因型,即AA、AB。基因频率经x检验差异不显著(P>0.05)。两型藏山羊的AKP同工酶均有两种基因型,即AKPF和AKPO,AKP基因频率经x检验差异不显著(P>0.05),不论是高原型还是汕谷型藏山羊的ES同工酶均有多态性,都有3个带,但两者的E_s同工酶带有明显差异,区带-Ⅱ-2、带-Ⅲ-3、带-Ⅱ-4、带-Ⅲ-2对应比较,差异极显著(>0.01);带-Ⅰ-1、带-Ⅰ-3、带-Ⅲ-1对应比较差异显著(P<0.05),高原型和山谷型山羊的LDH同工酶均有5条带,其活力顺序均为LDH_1>LDH_3>LDH_2>LDH_5>LDH_4,各带对应比较,两个生态类型藏山羊间LDH_1、LDH_2活力差异极显著(P>0.01);  相似文献   

9.
以中国农业科学院提供的低硒饲料(0.02×10 ̄(-6)),喂养BALB/C小鼠作为缺硒动物模型,采用富硒营养粉和亚硒酸钠溶液,以每只小鼠每d2.5μg元素硒作为补充,70d后发现:富硒营养粉和亚硒酸钠对小鼠全脑B型单胺氧化酶活性无显著影响(P>0.05);前者使肝脏超氧化物歧化酶活性增高36.1%(P<0.05),后者对其无显著影响(P>0.05);两者均极显著地(P<0.01)提高巨噬细胞吞噬率(59.8%和71%)和吞噬指数(68.5%和65.1%);提高溶血素含量,前者为65%(P<0.01),后者为41.3%(P<0.05);富硒营养粉能使运动后小鼠血乳酸含量迅速下降31.8%(P<0.01)。  相似文献   

10.
本研究采用卡氏人格量表对少年儿童篮球运动员和普通初中生的人格特征进行了测试,结果表明:(一)少年儿童男篮运动员与普通初中男生在A项、B项(P<0.01)、H项、I项、Q3项(P<0.05)五种因素有显著性差异;(二)男主力运动员与男替补运动员在C项、D项(P<0.05)、Q4项(P<0.05)、Q3项(P<0.01)四种因素有显著性差异;(三)中锋运动员与前锋运动员在B项、H项、N项(P<0.05)、F项(P<0.01)四种因素有显著差异;后卫与中锋在B项、Q3项(P<0.05)有显著差异;前锋与后卫在A项、Q4项(P<0.05)、N项、Q3项(P<0.01)四种因素有显著差异;(四)少年儿童男篮运动员与普通初中男生的次级因素Ⅰ(P<0.05)有差异.  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.
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   

16.
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   

17.
AcomputergeneratorforrandomlylayeredstructuresYUJia shun1,2,HEZhen hua2(1.TheInstituteofGeologicalandNuclearSciences,NewZealand;2.StateKeyLaboratoryofOilandGasReservoirGeologyandExploitation,ChengduUniversityofTechnology,China)Abstract:Analgorithmisintrod…  相似文献   

18.
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   

19.
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   

20.
As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.  相似文献   

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