情绪的表露对大鼠肝脏组织中MDA含量、GSH—Px和SOD酶活性的影响

采用雄性ｗｉｓｔａｒ 大鼠,经冷冻加束缚应激来观察情绪的表露对应激性大鼠肝脏组织中丙二醛（ ＭＤＡ） 含量、谷胱甘肽过氧化物酶（ＧＳＨ—Ｐｘ） 和超氧化物歧化酶（ＳＯＤ） 活性的影响－ 结果显示,大鼠正常冷冻束缚应激后,肝脏组织中ＭＤＡ含量显著升高,ＧＳＨ—Ｐｘ 和ＳＯＤ酶活性明显下降－ 而情绪表露处理的大鼠可使应激时肝脏组织中ＭＤＡ含量显著降低,ＧＳＨ—Ｐｘ 和ＳＯＤ 酶活性接近于正常室温下的对照组水平－ 上述结果表明：紧张情绪和行为的变化可增强肝脏组织的脂质过氧化作用,情绪的表露能有效地抵御这种脂质过氧化作用－     

育成牛不同月龄配种对其体尺发育的影响

通过对 2 0头育成牛不同月龄配种后体尺指标测定 ,发现 18月龄是育成牛体尺发育最好的初配时期 得出的最终结果是育成牛 18～ 2 1月龄时间段内越早配种 ,体尺发育越快     

大模板技术在圆形混凝土结构中的新用

随着国家对环保的越来越重视，各地新建污水处理厂也越来越多。目前，采用的污水处理工艺的大致相同，因而污水厂当中的构筑物形式也基本相同，其中圆形构筑物数量较多，施工难度较大，特别是对圆弧墙的施工，模板形式的采用最为关键。为了搞好圆孤墙结构的施工，保证混凝土的施工质量，在参考了大模板施工技术的基础上，提出了一种简易新颖的大模板施工工艺，较好的解决了对圈孤墙的模板施工。     

Analysis of Factors Affecting Execution Performance of OpenMP Programs

OpenMP is able to develop multithreaded programs with lower cost as a promising way to quickly parallelize a great number of serial programs. However, there are many difficulties when developing OpenMP multithreaded programs. Most importantly, the performance of OpenMP programs cannot be guaranteed, which has greatly affected the application of OpenMP. This paper examines several factors that affect the execution performance of OpenMP programs, including loop transformation, scheduling strategy, the number of threads, and nested parallelism. The results show that one of the key reasons for performance degradation is load imbalance, which can be corrected by reasonable use of these key factors to improve the execution performance of OpenMP programs.