维生素B1缺乏对运动能力的影响

维生素B1的磷酸化形式作为辅酶参与生物体代谢中的许多重要反应，维生素B1的缺乏会影响糖代谢功能和神经系统功能的正常发挥，本论述了维生素B1对糖代谢作用机制和神经系统的影响，分析了维生素B1缺乏对运动员运动能力的影响。     

1+X证书制度下高职院校大数据人才培养的实践研究

探讨在高职院校大数据专业人才培养过程中,结合1+X证书试点工作,充分考虑认证考核工作的科学化、标准化、规范化及社会认可度情况等因素,引入华为职业认证,推进学历证书和职业技能等级证书的有机衔接,提升教育教学质量和学生就业能力,更好地服务于地方经济社会发展。     

Separation and identification of cis and trans isomers of 2-butene-1,4-diol and lafutidine by HPLC and LC-MS

The cis and trans isomers separation of2-butene- 1,4-diol and lafutidine were studied by HPLC on two kinds of chiral columns: (S,S)-Whelk-O 1 and ChiraSpher. The isomers of 2-butene-1,4-diol can be separated on both chiral columns while the isomers of lafutidine can only be resolved on ChiraSpher column. The influence of different type and amount of mobile phase modifier on the isomers separation was extensively studied. The resolution of cis and trans isomers of 2-butene-1,4-diol was 2.61 on (S,S)-Whelk-O 1 column with hexane-ethanol (97:3, v/v) as the mobile phase. The resolution of lafutidine was 1.89 on ChiraSpher column with hexane-ethanol-THF-diethylamine (92:3:5:0.1, v/v/v/v) as the mobile phase. LC-MS methods were developed to identify the isomer peaks.     

关于图〈c4,m〉和图(U)s=1 c2(4,ms)的k--优美性

我们熟知c4是优美图,在c4的基础上,马克杰等在文[1]中已证明了〈c4,8〉和c4(2,m)是优美图.本文将〈c4,8〉推广到〈c4,m〉,并证明了它是k-优美图;将一个图〈c4,m〉推广到l个c4(2,ms)(s=1,2,…,l)的并也是k-优美图     

Controversial opinion: evaluation of <Emphasis Type="Italic">EGR1</Emphasis> and <Emphasis Type="Italic">LAMA2</Emphasis> loci for high myopia in Chinese populations

Functional studies have suggested the important role of early growth response 1 (EGR1) and Laminin α2-chain (LAMA2) in human eye development. Genetic studies have reported a significant association of the single nucleotide polymorphism (SNP) in the LAMA2 gene with myopia. This study aimed to evaluate the association of the tagging SNPs (tSNPs) in the EGR1 and LAMA2 genes with high myopia in two independent Han Chinese populations. Four tSNPs (rs11743810 in the EGR1 gene; rs2571575, rs9321170, and rs1889891 in the LAMA2 gene) were selected, according to the HapMap database (http://hapmap.ncbi.nlm.nih.gov), and were genotyped using the ligase detection reaction (LDR) approach for 167 Han Chinese nuclear families with extremely highly myopic offspring (<?10.0 diopters) and an independent group with 485 extremely highly myopic cases (<?10.0 diopters) and 499 controls. Direct sequencing was used to confirm the LDR results in twenty randomly selected subjects. Family-based association analysis was performed using the family-based association test (FBAT) software package (Version 1.5.5). Population-based association analysis was performed using the Chi-square test. The association analysis power was estimated using online software (http://design.cs.ucla.edu). The FBAT demonstrated that all four tSNPs tested did not show association with high myopia (P>0.05). Haplotype analysis of tSNPs in the LAMA2 genes also did not show a significant association (P>0.05). Meanwhile, population-based association analysis also showed no significant association results with high myopia (P>0.05). On the basis of our family- and population-based analyses for the Han Chinese population, we did not find positive association signals of the four SNPs in the LAMA2 and EGR1 genes with high myopia.     

二氯甲烷提纯方法的改进及1,9—二苯基—1,3,6,8—四烯—5—壬酮的合成

本文合成了一种指示剂:1,9—二苯基—1,3,6,8—四烯—5—壬酮,并首次使用该指示剂,通过一系列对比实验,对二氯甲烷提纯方法进行了改进。改进后的提纯方法可以保证二氯甲烷中不含残余酸。     

再议母语在外语习得中的作用及其启示

母语迁移的本质是外语习得中客观存在的、复杂的认知心理过程。在强调关注母语负迁移时，教师也应重视并全面地认识母语的正迁移尤其是其在认知层面的作用，必须用动态的、多层面的视角看待母语迁移，从而正确指导外语教学。     

群的轮换指标与Polya理论

文章从置换的轮换指标出发,引用第一类Stirling数S1(n,k),证明了∑λ1 2λ2 …nλn=n1λ1!λ2!…λn!1λ12λ2…nλn=1,∑λ1 2λ2 …nλn=n(-1)λ1 2λ2 …nλnλ1!λ2!…λn!1λ12λ2…nλn=0.应用旋转群的概念,导出正八面体的顶点,边,面的轮换指标,并在Polya理论下,根据等价函数类和推广等价函数类的概念,讨论了其轨道个数的计算.     

开展数学实验 深化实践教学改革

数学实验是以问题为载体,以计算机为手段,以数学软件为工具,以学生为主体的探索活动。数学实验的内容体系可分为演算、验证(模拟、演示)、数学建模(数据处理、经验归纳)三个层次。同时按学生专业特点,组织实施相应的教学内容。     

“1+X证书制度”下的专业课程体系建设研究——以服装与服饰设计专业为例

“1+X证书制度”下的专业课程体系建设是一项系统工程,涉及培养目标从“单一化向多元化”、课程内容从“单层次向多层次”、课程结构从“单进程向多进程”等诸多方面的转变。以服装与服饰设计专业为例,从围绕人才培养目标进行职业技能等级证书种类设计、依据职业技能等级设置对应课程、优化课程结构等方面展开专业课程体系建设的研究,为不同专业实施“1+X证书制度”下的专业课程体系建设提供参考。