隔药灸神阙对耐力训练再力竭运动大鼠心肌、骨骼肌自由基代谢的影响

以SD大鼠为研究对象,建立耐力训练再力竭运动大鼠模型,通过测定不同组别大鼠心肌、骨骼肌中SOD、CAT、GSH-Px活性及MDA含量的变化,探讨隔药灸神阙对耐力训练再力竭运动大鼠心肌、骨骼肌自由基代谢的影响.结果显示,训练隔药灸组大鼠心肌、骨骼肌中SOD、CAT、GSH-Px活性均显著高于训练组(P<0.05),GSH-Px活性与安静组比较无差异(P>0.05);MDA含量显著低于训练组(P<0.05),与安静组比较无差异(P>0.05).由此提示,隔药灸神阙可减轻耐力训练再力竭运动对大鼠心肌、骨骼肌造成的脂质过氧化损伤,改善运动造成的机体自由基代谢紊乱,从而明显延长耐力训练大鼠力竭时间.     

葛根素对运动大鼠血清自由基代谢及运动能力的影响

通过建立竭力游泳训练模型,测试大鼠血清SOD、GSH-Px、GSH、T-AOC、MDA含量,探讨葛根素对运动训练大鼠血清自由基代谢及运动能力的影响.研究结果表明,安静时葛根素组大鼠血清SOD、T-AOC高于对照组,而MDA含量低于对照组(P<0.05);运动后即刻和恢复24 h葛根素组大鼠血清SOD、GSH-Px活性、T-AOC显著高于相应对照组(P<0.05),而MDA含量明显低于相应对照组(P<0.05);且葛根素组游泳时间较对照组有显著延长(P<0.05).葛根素可显著提高运动大鼠抗自由基氧化的功能,使小鼠运动能力有了明显提高.     

茜草对大鼠股四头肌线粒体及ATP酶影响研究

目的探讨茜草多糖对运动训练大鼠股四头肌线粒体抗氧化能力以及ATP酶活性影响的机制。方法建立运动训练动物模型,测试大鼠股四头肌线粒体ATP酶、超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)活性以及过氧化氢(H2O2)、丙二醛(MDA)的含量。结果服用茜草多糖组大鼠力竭运动后股四头肌线粒体SOD,GSH-Px,CAT酶活性较显著高于运动对照组(P0.05);MDA和H2O2含量极显著低于运动对照组(P0.01);股四头肌线粒体ATPase活性较显著高于运动对照组(P0.05)。结论茜草多糖可以改善长时间大强度耐力运动中股四头肌线粒体的氧化应激水平,保护线粒体ATPase的活性,有利于运动中股四头肌线粒体结构和功能的完整性,可作为耐力运动员的运动补剂进行深入的开发和利用。     

一次力竭训练对小鼠糖原含量及血液转氨酶活性的影响

以昆明种小鼠(♂)为实验对象,建立了一次力竭训练动物模型.实验中应用蒽酮法测量糖原含量,邻甲苯胺法测量血糖含量,King′s比色法测量血清GOT(SGOT)与血清GPT(SGPT)活性.结果表明,小鼠力竭训练即刻糖原含量以及SGPT活性显著下降,血糖含量与SGOT活性则显著升高.24h恢复后,糖原含量以及SGPT活性显著升高,血糖含量与SGOT活性显著下降.     

中草药复方制剂对雏鸭血液和肺抗氧化酶活性的影响

研究了中草药复方制剂对雏鸭血液和肺抗氧化酶活性和丙二醛(MDA)含量的影响。结果表明,中药组雏鸭血液和肺中超氧化物歧化酶(SOD),过氧化物酶(POD),过氧化氢酶(CAT)活性显著升高升高(P<0.05或P<0.01),而丙二醛(MDA)含量则于显著降低(P<0.05或P<0.01),说明雏鸭喟服中草药复方制剂后一定程度上增强了血液和肺抗氧化酶活性。     

沙苑子对运动训练大鼠骨骼肌自由基代谢的影响

通过建立力竭跑台训练模型,测试大鼠骨骼肌组织超氧化物歧化酶(SOD)、过氧化氢酶(CAT)活性、谷胱甘肽过氧化物酶(GSH-Px)活性、丙二醛(MDA)含量和ATP酶活性,探讨沙苑子对力竭跑台训练大鼠骨骼肌组织自由基代谢、ATP酶活性和运动能力的影响.结果显示,与安静组比较,运动力竭组SOD、CAT和GSH-Px活性降低,MDA含量升高;沙苑子组大鼠骨骼肌组织活性显著高于对照组,MDA含量明显低于相应对照组(P<0.01);运动力竭组Na 、K -ATPase和Ca2 、Mg2 -ATPase活性与安静组比较降低,沙苑子组大鼠骨骼肌组织ATPase活性显著高于对照组.沙苑子可显著提高运动大鼠抗氧化的功能,提高运动大鼠骨骼肌组织ATPase活性,具有较强抗氧化能力,使大鼠运动能力有了明显提高.     

蜂胶对小鼠运动能力及心肌自由基代谢的影响

目的:通过给昆明(KM)小鼠灌服蜂胶液四周并于最后一次游泳训练至力竭实验,观察训练后小鼠心肌脂质过氧化损伤程度,探讨蜂胶抗氧化、保护心肌组织、提高机体抗疲劳能力的作用.方法:KM小鼠随机分为安静对照组(A)、运动对照组(B)、运动给药组(C).记录小鼠游泳至力竭时间,并测定心肌细胞MDA含量、SOD、GSH-Px、Ca2+ -ATPase的活性.结果显示:1)C组小鼠游泳至力竭时间明显长于B组(P <0.05).2) 4周递增负荷游泳训练并于最后一次力竭后,B组小鼠运动能力下降,心肌MDA含量显著增高(P<0.05),SOD、GSH-Px、Ca2+-ATPase活性均显著下降(P<0.05).3)C组小鼠力竭运动后心肌细胞MDA含量低于B组(P<0.05),SOD 、GSH-Px 、Ca2+-ATPase活性显著高于B组(P<0.05).结论: 1)4周递增负荷训练,小鼠呈疲劳状态,心肌脂质过氧化程度明显升高.2)蜂胶可通过提高抗氧化酶活性、减少自由基的生成而降低心肌脂质过氧化损伤,具有抗氧化的作用.3)蜂胶能明显延长小鼠游泳至力竭时间,具有提高机体耐力运动能力、延缓疲劳的作用.     

杜仲对运动疲劳大鼠肾脏的保护作用研究

探讨杜仲提取物对运动疲劳大鼠肾脏组织的保护作用以及对相关生理生化指标的影响。建立运动疲劳动物模型,测试与大鼠肾脏组织抗氧化水平相关的超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、谷胱甘肽过氧化物酶(GSH-Px)活性,丙二醛(MDA)、还原性谷胱甘肽(GSH)含量等系列指标;测试表征肾脏结构与功能相关的尿液总蛋白(TP)、尿液白蛋白(Alb)、尿液β2-微球蛋白(β2-MC)含量。与安静对照组比较,运动对照组SOD,GSH-Px,CAT活性及GSH含量下降,总抗氧化能力(T-AOC)降低,MDA含量上升(P0.05或P0.01);与安静对照组比较,运动对照组TP,Alb和β2-MC含量升高(P0.01)。服用杜仲提取物组大鼠力竭运动后肾脏组织SOD,GSH-Px,CAT酶活性显著高于运动对照组(P0.05/P0.01);肾脏组织GSH含量显著高于运动对照组(P0.05),总抗氧化能力(T-AOC)提高,MDA含量显著低于运动对照组(P0.05);TP,Alb和β2-MC含量低于运动对照组(P0.05)。杜仲提取物可以改善长时间大强度耐力运动中肾脏组织的氧化应激水平,保护肾脏组织抗氧酶活性,维持运动训练大鼠肾脏组织结构和功能,降低尿蛋白含量,提高大鼠抗疲劳能力。     

补充辅酶Q10对大鼠血清总SOD活力及MDA含量的影响

以运动、外源性补充CoQ10以及运动合并补充CoQ10为干预手段,观察大鼠血清总超氧化物歧化酶(SOD)活力和丙二醛(MDA)含量的变化,探讨在运动训练中补充CoQ10的抗氧化作用.选36只健康雄性Wister大鼠,随机分为4组,即安静对照组(NC)、安静状态补充CoQ10组(QC)、运动训练组(NE)和运动训练状态补充CoQ10组(QE),灌胃补充CoQ10及递增负荷运动训练7周,力竭运动后即刻断头取血,分光光度法测定血清丙二醛(MDA)含量和超氧化物歧化酶(SOD)活力.结果表明:①与NC组比较,QC组血清MDA含量增多(P＜0.01),总SOD活力无显著性差异;NE组血清MDA含量下降,总SOD活力提高(P＜0.01);QE组血清MDA含量减少,总SOD活力提高(P＜0.01). ②与QC组相比,QE组血清MDA含量下降,总SOD活力提高(P＜0.01). ③与NE组相比,QE组血清MDA含量及总SOD活力无显著性差异.     

月季花色素对运动小鼠抗氧化酶系统及乳酸含量的影响

研究月季花色素(rose anthocyanin,RA)对小鼠运动能力和抗氧化能力的影响,探讨其抗运动性疲劳的机制.选取32只昆明种小鼠随机分为对照组(control group,C)、补充月季花色素组(rose anthocyanin group,R,按0.01 mL/g补充月季花色素),每组16只.4周后,每组8只力竭运动,记录游泳至力竭的时间;每组另8只进行定量负荷(负3%体重)后测定小鼠血清和骨骼肌中MDA、血乳酸含量与SOD,GSH-PX,CAT及小鼠骨骼肌中LDH活性.结果表明:1)补充月季花色素可显著延长小鼠运动至力竭时间(P<0.05),降低小鼠血清和骨骼肌中血乳酸含量(P<0.05),并提高小鼠骨骼肌中LDH活性(P<0.05);2)R组小鼠血清和骨骼肌中MDA含量显著降低(P<0.05),SOD,GSH-PX,CAT活性显著提高(P<0.05).由此可知,月季花色素可显著增强小鼠体内多种抗氧化酶的活性,延迟运动性疲劳的产生,提高运动能力.     

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.