The interaction of functional and dysfunctional emotions during balance beam performance

The interaction between functional and dysfunctional emotions, as one of the major tenets of the individual zones of optimal functioning (IZOF) model (Hanin, 2000), was studied in a sport specific setting. Fourteen female gymnasts performed three attempts of a compulsory balance beam routine at three different heights. Heart rate and self-report of functional and dysfunctional emotions were measured during each routine. These data revealed the effectiveness of inducting emotions by manipulating height. Also, performance decreased on the most challenging condition, (i.e., the first attempt on the highest height). Moderated hierarchical regression analysis revealed a significant interaction between functional and dysfunctional emotions only when the dysfunctional emotion level was low.     

QTL analysis for some quantitative traits in bread wheat

Quantitative trait loci (QTL) analysis was conducted in bread wheat for 14 important traits utilizing data from four different mapping populations involving different approaches of QTL analysis. Analysis for grain protein content (GPC) sug- gested that the major part of genetic variation for this trait is due to environmental interactions. In contrast, pre-harvest sprouting tolerance (PHST) was controlled mainly by main effect QTL (M-QTL) with very little genetic variation due to environmental interactions; a major QTL for PHST was detected on chromosome arm 3AL. For grain weight, one QTL each was detected on chromosome arms 1AS, 2BS and 7AS. QTL for 4 growth related traits taken together detected by different methods ranged from 37 to 40; nine QTL that were detected by single-locus as well as two-locus analyses were all M-QTL. Similarly, single-locus and two-locus QTL analyses for seven yield and yield contributing traits in two populations respectively allowed detection of 25 and 50 QTL by composite interval mapping (CIM), 16 and 25 QTL by multiple-trait composite interval mapping (MCIM) and 38 and 37 QTL by two-locus analyses. These studies should prove useful in QTL cloning and wheat improvement through marker aided selection.     

外尔斯特拉斯逼近定理的概率证明

在外尔斯特拉斯逼近定理的各种证明中,伯恩斯坦的证明谅必最普通。它特别有感染力,因为它是构造证明。如果f是区间[0,1]上的连续实值函数,伯恩斯坦多项式序列     

中跑运动员训练和比赛负荷量的因子分析

训练负荷量参数的变化问题是中跑项目运动训练多年化过程中所要解决的主要问题之一。按Hirsch的观点,在制定中跑项目多年训练计划和不断提高运动员工作能力时,应考虑运动员身体素质的发展和技术提高的问题,并为此而正确制定出训练负荷的量与强度方面的要求。许多作者就不同年龄与训练水平的中跑动运员的训练情况提出了相应的看法。但至今还未研究过不同等级中跑运动员训练和比赛负荷量的因子结构问题。同时还未解决好在训练     

英国钢铁公司蒂赛德厂共喷吹铁水罐脱硫设备

新型铁水罐脱硫设备在英国钢铁公司蒂赛德厂投产。该设备代替了以前的鱼雷式铁水包喷吹设备，提高了混合效率，最大地减少了废物排放量，并使鱼雷式铁水包的运输能力提高３０％。     

祖父的零钱

“祖父的零钱!”女营业员对牵着我的手的那个男人喊道。 “对不起，你说什么？”我的祖父一边问，一边把口袋里的硬币摇得叮当乱响。     

青少年运动缺乏症研究的10大问题

摘要：运动缺乏症（EDD）是一种儿科疾病,特点是中高强度体力活动（MVPA）下降,低于目前的推荐量,也与积极的健康结果（health outcomes）不一致。目前,大多数儿童和青少年符合EDD的诊断标准,因为他们没有达到日常MVPA的最低要求。本文的目的是强调10个与青少年EDD有关的重要研究问题。需要进行重要的研究来更好的定义EDD的临床表现,包括评估体力活动行以确定开始出现EDD的年龄或发育阶段;包括运动技巧和体能的运动起源（kinesiogenesis）的检测;以及对影响青少年MVPA的生活方式因素的评估。关于治疗EDD的干预措施和政策的研究问题,包括评估对卫生保健从业者进行运动医学重要性的教育和训练;确定在临床上识别和治疗EDD青少年的方法的有效性;开发敏感的、特效的、经济的方法以诊断青少年EDD;以及定制方法以促进本病诊疗的医疗保险赔付。如果未来研究不能优化EDD青少年的识别、治疗和管理方案,具有重大影响的生物医学、心理、经济和政治的新的卫生保健问题将会不断出现。     

Red pigment production by Penicillium purpurogenum GH2 is influenced by pH and temperature

The combined effects of pH and temperature on red pigment production and fungal morphology were evaluated in a submerged culture of Penicillium purpurogenum GH2, using Czapek-Dox media with d-xylose as a carbon source. An experimental design with a factorial fix was used: three pH values (5, 7, and 9) and two temperature levels (24 and 34 °C) were evaluated. The highest production of red pigment (2.46 g/L) was reached with a pH value of 5 and a temperature of 24 °C. Biomass and red pigment production were not directly associated. This study demonstrates that P. purpurogenum GH2 produces a pigment of potential interest to the food industry. It also shows the feasibility of producing and obtaining natural water-soluble pigments for potential use in food industries. A strong combined effect (p<0.05) of pH and temperature was associated with maximal red pigment production (2.46 g/L).     

运用深度学习提高21世纪能力

"深度学习"是个人将在一个情境中学习的内容迁移应用于新情境的过程。深度学习通常是个人在与他人分享学习和互动中发生的,其形成的知识是可迁移的,包括学科内容的知识和为何、何时、怎样用这些知识来解决问题。我们将这样的知识和技能的结合体称为"21世纪能力",这些能力是根据学科领域的基本原理以及这些原理之间的相互关系所提出的,而不是孤立的、肤浅的事实或程序。支持迁移的正是人们将交织在一起的知识和技