股后肌和小腿三头肌蹬地拉伤的分析

采集了不同运动项目引起的股后肌和小腿三头肌蹬地拉伤的病例92份,结果表明,业余运动员蹬地动作引起股后肌和小腿三头肌的拉伤,其中半腱肌和半膜肌拉伤多于股二头肌,腓肠肌内侧头拉伤多于外侧,腿后屈肌的后内侧部多于后外侧部,疾跑后蹬引起肌肉拉伤的部位多偏向于股后,向上跳起的蹬地动作引起肌肉拉伤的部位似有相对下移小腿的趋势.     

体育教学中下肢肌肉拉伤率比较及产生原因分析

本文对体育教学过程中发生下肢肌肉拉伤学生的情况进行归纳、统计和比较.结果发现体育教学中造成下肢肌肉拉伤的分布范围较为广泛,但最易引起拉伤的部位是股后肌群,占本文研究人数的56.3%.而股后肌群中半腱肌、半膜肌的拉伤率又远远高于股二头肌,分别占74.6%和25.4%.另外对引起拉伤原因进行调查分析,提出预防建议及对策.     

对短跑运动员股后肌群损伤原因及预防的探讨

股后肌群损伤常见于跑、跳等项目,其中以短跑和跨栏发生率较高,占肌肉损伤的第一位.所以研究短跑运动员股后肌群损伤原因及预防方法,可以在教学训练中掌握主动权,减少损伤发生率,保证运动员的正常训练,创造优异的运动成绩.     

陕西省优秀跆拳道运动员膝关节屈伸肌群等速测试与研究

采用ISOMED2000获得陕西省优秀跆拳道运动员膝关节等速收缩的生物力学特征。右膝关节屈肌群等速离心收缩峰值力矩出现时的关节角度在152.81-159.33°之间,伸肌群等速离心收缩峰值力矩出现时的关节角度在113.01-108.61°之间。膝关节屈肌伸群向心收缩,速度在240°/s时相对力矩梯度达到最大,右膝屈肌群最大值29.62 N.m/s.kg,伸肌群最大值为51.42 N.m/s.kg。     

男子水球守门员膝、踝关节屈伸肌群等速肌力实验测量

通过对国家男子水球守门员进行膝和踝关节屈伸等速测试,探讨我国优秀水球守门员膝踝关节屈伸肌群等速肌力水平,诊断膝和踝关节屈伸肌群肌力均衡性,预防因屈伸肌群肌力比值失衡而导致关节肌群运动损伤的发生。研究结果表明,膝和踝关节屈伸肌群测试模式均为等速向心和离心。在测试速度为60°/s和240°/s下,膝关节屈伸肌群向心收缩峰力矩比值的平均值分别为0.5,0.6;在测试速度为60°/s和180°/s时,踝关节屈伸肌群向心收缩峰力矩比值的平均值均为0.3;仅有1名队员两侧踝关节屈肌群离心收缩峰力矩(60°/s)/伸肌群向心收缩峰力矩(240°/s)小于1,其余队员膝踝关节屈伸等速测试时,拮抗肌群离心收缩峰力矩/原动肌群向心收缩峰力矩均大于1.进一步得出国家男子水球守门员膝和踝关节屈肌群向心收缩肌力较弱;膝和踝关节屈伸等速测试时拮抗肌群离心收缩肌力与原动肌群向心收缩肌力均衡。     

优秀男子跆拳道运动员膝关节肌群肌力测试与特征研究

采用ISOMED2000获得陕西省优秀跆拳道运动员膝关节等速向心收缩的生物力学特征,为我省跆拳道运动员力量训练提供一定的参考依据.研究发现：中快速以及快速条件下膝关节屈伸肌群力量下降较多,需要加强快速以及中快速情况下的力量训练;左右膝关节屈伸肌群等速向心收缩平均功率在300°/s时达到最大值,此角速度下屈伸肌群的爆发力最大;省跆拳道运动员右膝的力量与爆发力强于左膝,建议加强左膝屈伸肌群的力量练习与训练中的实战进攻训练,提高其爆发力;左右膝关节屈伸肌群力量比值不合理,屈肌力量相对较低,建议加强膝关节屈肌群的力量训练;左右膝关节屈肌较伸肌易疲劳（P〈0.05）,应首先加强左右膝关节屈肌的力量耐力.     

股后肌群训练对提高短跑速度影响的研究

针对基层短跑教学训练实践,突出股后股群训练,通过教学对比实验,表明股后肌群训练能有效提高影响短跑速度的相关参数指标,从而提高短跑速度,股后股群训练对基层初级短跑运动员短跑速度的提高有重要意义。     

对短跑运动员股后股群损伤原因及预防的探讨

股后肌群损伤常见于跑，跳等项目，其中以短跑和跨栏发生率较高，占骨肉损伤的第一位，所以研究短跑运动员股后肌群损伤原因及预防方法，可以在教学训练中掌握主动权，减少损伤发生率，保证运动员的正常训练，创造优异的运动成绩。     

低负荷动态膝关节伸展时血流限制对大腿前群肌肉活动的急性影响

6名男子手球运动员在加压200 mmHg条件下以30%1RM的力量进行三组膝伸展运动,比较膝关节低强度伸展训练中血流受限与未受限时的大腿前群肌肉肌电活动的差异以及自我感觉用力度等级和延迟性肌肉酸痛反应.结果表明:加压组在第一组和第二组训练时股外侧肌振幅均方根(RMS)值显著大于非加压组(P0.05);加压组股直肌在第二组训练时,RMS值出现显著性增加(P0.05).三组训练中,加压组RPE值显著大于对照组(P0.01),实验后24 h、48 h、72 h后视觉模拟评分法(VAS)评分值显著大于对照组(P0.05).急性膝关节血流限制伸展训练可以使大腿前群股外侧肌和股直肌激活程度增加;血流限制方案实施过程中主观用力感觉等级逐渐增大,并导致肌肉延迟性酸痛时间延长.     

中国速度轮滑运动员疾跑阶段关节角速度分析

为了准确地反映现阶段中国速度轮滑运动员疾跑技术的特点和水平,运用影像测量与解析和数理统计等方法获取运动员疾跑技术的运动学参数数据。运用运动学方法,对中国优秀速度轮滑运动员疾跑技术的实际情况进行研究。重点从疾跑过程中运动员关节角速度的变化分析,结果表明浮动腿的收缩、摆动对髋关节角速度的变化影响较大,浮动腿的摆动对膝关节角速度的影响较大,为提高该项目竞技能力提供新的理论基础。     

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.