中学生血压与血脂关系的探讨

目的探讨中学生血压与血脂的关系.方法对21名中学生进行了血压、身高、体重的测量及高血压家族史的调查.对血清胆固醇(TC)、甘油三酯(TG)、高密度脂蛋白(HDL)和低密度脂蛋白(LDL)作了测定.结果血压偏高组的中学生TC,TG,LDL均高于血压正常组(P＜0.05),而HDL低于血压正常组(P＜0.05).中学生血压与血脂相关分析中,TC和LDL与舒张压(DBP)呈正相关(P＜0.05),TG与收缩压(SBP)呈正相关(P＜0.05),HDL与SBP呈负相关(P＜0.05).结论中学生时期即存在高血压伴高脂血症,因此,预防高血压、冠心病应当从青少年时期开始.     

腰椎间盘突出症患者血清、尿液和髓核中锌、铜的变化规律

目的:了解腰椎间盘突出症患者体内锌、铜代谢规律.方法:将48例腰椎间盘突出症患者分为3组(青年、中老、老年组),测定其血清、尿液和髓核组织锌、铜的含量.结果:血清和髓核组织中锌、铜含量随增龄呈逐渐增高趋势,尿锌含量逐渐减少,尿铜含量各年龄组间无明显改变(P＞0.05).髓核组织中锌含量曲线与血清锌存在明显相关性(r=0.978,P＜0.01);与尿锌含量呈负相关性(r=-0.959,P＜0.01);结论:提示锌、铜含量的变化在髓核的退变及纤维化中起一定作用,在锌的代谢中血清和髓核之间存在某种协调关系;血清和髓核中铜含量的变化与尿铜的排出量无关.     

急性游泳运动对大鼠微量元素的影响

为了揭示急性游泳运动训练对大鼠血浆微量元素代谢的影响,将32只SD大鼠随机分为4组,采用原子吸收分光光度法检测血浆铜Cu、Fe、P、Se和Zn的含量. 结果表明:运动A组大鼠平均血浆硒和锌含量水平较对照组降低,磷和铁的含量较对照组升高,且差异具有统计学意义(P＜0.05);运动B组大鼠平均血浆铜、硒、锌、磷、铁含量水平较对照组升高,且差异具有统计学意义(P＜0.05);运动C组所有指标与对照组相比较差异无显著性(P>0.05). 由此得出急性游泳运动训练对大鼠血浆Cu、Fe、P、Zn、Se有较明显的影响.     

齐墩果酸对铅中毒小鼠股骨组织中矿物质的影响

目的探讨齐墩果酸对铅中毒小鼠股骨组织中矿物质的影响.方法 40只昆明小鼠随机分成对照组、模型组、齐墩果酸组和驱铅组,醋酸铅饮用水造模4周,造模1周后给予齐墩果酸灌胃干预3周,在第4周末处死全部小鼠,取双侧股骨称重,原子吸收法测定小鼠骨组织中铅、钙、铁、锌、铜、镁和锰含量.结果模型组小鼠骨铅含量明显高于对照组,驱铅组骨铅含量低于模型组,差异具有统计学意义(P0.05).模型组小鼠骨钙和铁含量低于对照组,驱铅组骨钙和铁含量低于模型组(P0.05).各组骨系数、锌、铜、镁和锰的含量没有明显差别(P0.05).结论齐墩果酸能降低小鼠骨铅含量,具有一定的驱铅作用.     

大鼠血浆心钠素含量和微量元素相关的实验研究

本文报导大鼠循环血心钠素(ANP)含量和几种微量元素的水平。结果表明:锌组血浆ANP明显高于铜组和对照组(P<0.001),而铜组低于对照组(P<0.05)。血清铜含量以铜组高于锌组。和对照(p<0.05);血清锌含量从锌组高于铜组。铜组ANP与血清Cu呈显著负相关。锌组ANP与血清Zn呈显著正相关。同时还测定血清硒和锂。本实验已显示四种微量元素与ANP有一定相关。     

苯磺酸氨氯地平和缬沙坦联合治疗对高血压患者血压和微量白蛋白尿的影响

观察苯磺酸氨氯地平和缬沙坦联合治疗对高血压患者血压和微量白蛋白尿的影响,探讨血压与MA的关系.从2006年10月～2008年10月收集合并MA阳性的原发性高血压患者120例.随机分为:苯磺酸氨氯地平组(A组)、苯磺酸氨氯地平+缬沙坦组(B组)、缬沙坦组(C组),各组均为40例.测定各组治疗前后血压的变化,采用免疫透射比浊法测定患者治疗前后的MA.结果(1)治疗8个月后,A组、C组及B组患者的收缩压和舒张压均有明显降低,差别有统计学意义(P＜0.05),B组较A组和C组有更强的降压趋势,且差别有统计学意义(P＜0.05).3组患者服药前后MA含量均有所降低,且差别有统计学意义(P＜0.05),B组和A组和C组比较,变化幅度更大,且差别有统计学意义(P＜0.05).(2)直线相关分析显示患者血压的变化与MA浓度的变化正相关(r=0.59,P＜0.05).说明:(1)苯磺酸氨氯地平和缬沙坦均能有效控制血压,且均能显著降低高血压病患者MA含量,但二者联合疗效更好.(2)高血压病患者MA含量的变化与血压的变化正相关.     

淮北城乡婴幼儿头发中微量元素锌、铁、铜水平的比较研究

考查了淮北城乡0－7岁婴幼儿头发中微量元素锌、铁、铜水平的差异,统计结果表明,城乡各年龄段儿童头发中微量元素锌、铁、铜（均值）含量,除0－1岁发中铜含量无差异外,其它匀有差异,发中锌、铁差异特别显著。发中锌、铜农村组低于城市组,而铁城市组低于农村组。     

铜暴露对中华鲟幼鱼的生长、消化酶活性和组织中铜积累的影响

研究了中华鲟幼鱼经不同浓度铜(Cu2+)水体(低浓度组(0.40μg/L)、中浓度组(0.89 μg/L)、高浓度组(2.00 μg/L)、对照组(0.00 μg/L))暴露60 d后,铜在幼鱼不同组织中的积累以及对幼鱼生长、消化酶活性的影响.结果显示,随着水体Cu2+浓度的增加,幼鱼体质量显著减轻,低浓度组与对照组(无Cu2+水体)无显著性差异(P＞0.05),中高浓度组与对照组均有显著性差异(P＜0.05).对照组中华鲟幼鱼8种组织中铜含量的顺序从高到低依次为肝脏＞鳃＞背骨板＞肌肉＞皮肤＞脊索＞软骨＞消化道;经不同浓度Cu2+水体暴露60 d后,随着Cu2+浓度的升高,8种组织中铜含量与对照相比均显著增加(P＜0.05),肝脏中铜的含量仍最高;消化道中铜含量增加最多,低浓度组是对照组的21.41倍,高浓度组是对照组的58.58倍;表明肝脏和消化道是Cu2+主要的累积和代谢器官.随着Cu2+浓度升高,消化道蛋白酶、淀粉酶的活性与对照组相比显著下降(P＜0.05);脂肪酶活性则随着Cu2+浓度的升高而升高,低浓度组与对照差异不显著,中高浓度组与对照组均有显著性差异(P＜0.05).表明Cu2+对蛋白酶和淀粉酶的活性有抑制作用,对脂肪酶活性有促进作用.代谢酶活性的变化可以灵敏地反映Cu2+的胁迫程度和毒性.     

复合锌硒片对尘肺患者血清脂质过氧化水平和微量元素的影响

目的探讨复合锌硒片对尘肺患者血清脂质过氧化水平及微量元素含量的影响.方法将80例单纯Ⅰ期尘肺患者分成治疗组和对照组,治疗组在内科常规治疗基础上加用复合锌硒片治疗3个月.测定服药前、服药1个月后血清SOD,MDA的含量及微量元素锌、硒及铜的含量.结果对照组患者治疗前后血清SOD活力、MDA及硒、锌、铜含量差异无显著性(P0.05),而治疗组患者治疗后血浆SOD活力显著升高,MDA含量降低,微量元素锌、硒含量增高,与治疗前差异有显著性(P0.01),与对照组治疗后相比也有显著性差异(P0.01).结论复合锌硒片能调整体内微量元素比例,提高尘肺患者抗氧化作用,可用于尘肺病的辅助治疗.     

缺氧和高糖对大鼠肾成纤维细胞VEGF和PEDF表达的影响

探讨了缺氧对不同浓度葡萄糖培养的肾成纤维细胞(NRK细胞)血管内皮生长因子(vascular endothelial growth factor,VEGF)与色素上皮衍生因子(pigment epithelium derived factor,PEDF)表达和变化情况.将NRK细胞分为:正常组(5.6mmol/L葡萄糖)、高糖A组(15mmol/L葡萄糖)、高糖B组(30mmol/L葡萄糖)、缺氧对照组(100μmmol/LCOCl2)、缺氧A组(100μmmol/LCOCl2+15mmol/L葡萄糖)、缺氧B组(100μmmol/LCOCl2+ 30mmol/L葡萄糖).采用半定量RT-PCR方法及ELISA法测定24h、48h后NRK细胞VEGF与PEDF mRNA及蛋白的表达及其变化情况.与正常对照组相比,不同浓度葡萄糖培养的NRK细胞在缺氧条件下VEGF蛋白含量明显升高(P＜0.01,P＜0.05),VEGF mRNA表达升高(P＜0.01,P＜0.05),并呈剂量依赖性;随着缺氧时间的延长,各组NRK细胞的VEGF蛋白含量呈上升趋势(P＜0.01),VEGF mRNA表达亦升高(P＜0.05).与正常对照组相比,各组NRK细胞的PEDF蛋白含量明显下降(P＜0.01),PEDF mRNA表达下降(P＜0.01,P＜0.05),并呈剂量依赖性;随着缺氧时间的延长,各组NRK细胞的PEDF蛋白含量呈下降趋势(P＜0.01),PEDF mRNA表达亦下降(P＜0.01).缺氧加重高糖培养的大鼠肾成纤维细胞VEGF与PEDF的表达失衡,从而探讨了缺氧在糖尿病肾病(DN)的发病中起到的作用.     

Markedness and its Interpretation in Language Use

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.     

Lower Paleozoic oil relationships within Williston Basin, Canada

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.     

An Analysis of Catherine＇s Character——Wuthering Heights

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.     

Features of Women's language

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.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

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.     

Design and analysis of generic LBS application developing platform

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.     

橡胶颗粒沥青混合料低温抗裂性试验研究

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.     

低渗透非均质砂岩油藏启动压力梯度研究

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。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

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.     

On Tragic Consciousness In The Works By Ernest Hemingway

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.