脑电生物反馈对认知和脑功能的影响

脑电生物反馈是通过一系列训练步骤来控制、调节身心机能的一种方法.脑电生物反馈训练可以调整唤醒水平、促进技能发展和提高任务表现.作为一种有效的训练工具,脑电生物反馈在临床、艺术和运动科学领域有广泛应用.综述了脑电生物反馈在实践中的运用,探讨了脑电生物反馈的神经机制及其对认知和脑功能的影响,并对该领域的未来研究趋向作了分析.     

生物反馈训练对大学生高尔夫运动员心率变异性的影响

研究通过运用生理相干与自主平衡系统对大学生高尔夫运动员进行生物反馈训练,在积极影响大学生高尔夫运动员心率变异性的基础上,帮助大学生高尔夫运动员提高自我放松和自我调节能力。研究运用生理相干与自主平衡系统对9名大学生高尔夫运动员进行为期4个月的生物反馈训练。大学生高尔夫运动员通过掌握生理相干与自主平衡系统中不同训练项目,积极地影响了各自心率变异性;根据对实时反馈的时域指标的理解,大学生高尔夫运动员有效地提高了自身心理放松和调节能力。     

不同训练强度对血浆心钠素的影响

本文通过对运动训练与心钠素相互作用调节效应的研究,根据血浆心钠素在运动中的变化规律、不同运动方式、运动强度时间等对心钠素影响,阐明心脏分泌心钠素与运动训练提高成绩的作用机制。同时在增强心钠素对心脏的生物效应进行了分析。     

对高校运动队训练后疲劳的诊治与研究

通过对我院男女排球队运动训练后,身体反应记录和生理指标测定,并采用文献资料法来研究运动者疲劳的程度.科学地提出调节和治疗疲劳的有效方法,避免过度疲劳后对身体产生伤害,对提高运动成绩和增强体质有着相当重要的研究意义。     

对高校运动队训练后疲劳的诊治与研究

通过对我院男女排球队运动训练后,身体反应记录和生理指标测定,并采用文献资料法来研究运动者疲劳的程度,科学地提出调节和治疗疲劳的有效方法,避免过度疲劳后对身体产生伤害,对提高运动成绩和增强体质有着相当重要的研究意义.     

我国运动员情绪调节研究的文献计量分析?

运动员在日常训练、比赛过程中会因为情绪波动而影响训练效果和比赛发挥,因此良好的情绪调节能力对于运动员的运动表现起着至关重要的作用.本文通过对我国运动员情绪调节的相关研究进行文献计量分析,系统梳理了目前该领域的研究现状与存在的问题,以期为今后运动心理学领域情绪调节的研究提供科学依据和研究思路,更好地为运动实践服务.分析结果发现,相关研究文献总体数量较少,但也取得了一定的成果;研究内容包括运动员情绪调节对其认知能力和情绪的影响、运动员情绪调节策略的特点以及运动员情绪调节的生理机制;研究方法主要以问卷调查和行为实验为主,多指标探究生理或神经机制的实验研究目前仍处在起步阶段.建议在未来的研究中,应关注情绪调节在内隐与外显2个层面的共同影响、加强跨学科的交叉研究以及开展针对运动员情绪调节能力改善的运动心理干预研究.     

不同材质表面增强式训练对运动表现的影响

通过查阅文献资料,回顾了增强式训练对人体运动过程中肌肉调节产生的影响,并根据前瞻研究进一步归纳出不同材质表面下增强式训练对运动表现的影响.结果表明:硬地增强式训练对下肢爆发力和提升运动敏捷性有显著影响;软地进行增强式训练的效果与硬地进行增强式训练不相上下,同时也可减缓地面反作用力所造成过大的冲击,减轻关节的负荷,降低其运动疲劳及损伤的发生率;水中增强式训练效果可以达到硬地增强式训练效果,对运动表现具有促进作用,且可以减低运动损伤的风险.该研究让教练、教师及研究人员进一步了解了增强式训练对运动表现的影响和研究现状,并可为后续研究提供参考.     

认识运动训练中的运动心理训练

采用文献资料法,从运动心理训练概念开始,对运动技能心理系统和运动技能的生理基础分析,运动心理训练不仅是对情绪的控制和调节,在运动技能领域,运动技能心理训练核心是改善运动专门化知觉.稳定、高效的感知觉和控制系统信息的反馈是否及时、有效,是运动技能心理训练的重点.     

氨基酸代谢与抗阻训练对骨骼肌mTOR的调节作用研究

抗阻训练在一定程度上能刺激肌肉生长,肌肉收缩和恢复过程中刺激蛋白质分解、合成的分子机制.从氨基酸、抗阻训练对骨骼肌mTOR的调节角度出发,综述了mTOR对细胞生长的作用、mTOR下游靶分子的调节、氨基酸对mTOR的活化作用和抗阻训练对mTOR信号转导调节的研究现状,并探讨了氨基酸与运动对mTOR的调节作用及机制.     

青少年业余田径训练存在的若干问题

运用文献综述法，对青少年业余田径运动受训练进行探讨。全面发展身体素质，掌握多种运动技能，是提高专项运动成绩的基础保证；运动负荷的安排与调节是提高专项运动成绩的重要方法和手段；重视速度训练不仅要从认识上加强，还要从方法上着手；而心理训练又是运动训练和比赛不可缺少的重要环节，必须贯穿整个训练过程。     

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.     

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.     

A computer generator for randomly layered structures

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