单层砖柱厂房的抗震设计

根据国家标准《建筑抗震设计规范》GBJ 50011-2001编制的原则,通过对单层砖柱厂房震害分析,提出了相应的抗震设计方法.     

应用掺配外加剂的快硬水泥混凝土修补水泥混凝土路面的探讨

水泥混凝土路面的修补一直难以很好地解决,如何既快捷又方便,既美观又牢固地对破损混凝土路面进行修补,介绍给大家快硬水泥混凝土使用情况。     

Antioxidant activity of Glossogyne tenuifolia

Glossogyne tenuifolia is a native traditional anti-inflammatory herb in Taiwan. It has previously been shown that the ethanol extract of G. tenuifolia (GT) inhibited the LPS-induced inflammatory mediator release from murine macrophage cell line and human whole blood. In the present work, the ethanol extracts of G. tenuifolia and its major constituent, luteolin-7-glucoside, were shown to be scavengers of 1,1-diphenyl-2-picrylhydrazyl, superoxide, and hydroxyl radicals. Moreover, copper-induced low-density lipoprotein oxidation was suppressed by GT and luteolin-7-glucoside as measured by decreased formation of malondialdehyde and conjugated diene as well as reduced electrophoretic mobility. GT and luteolin-7-glucoside were also against N-formyl-methionyl-leucyl-phenylalanine-induced reactive oxygen species (ROS) production in human polymorphonuclear neutrophils and peripheral blood mononuclear cells. In summary, these data indicated that GT is a potential ROS scavenger and may prevent atherosclerosis via inhibiting LDL oxidation or ROS production in human leukocytes. Moreover, luteolin-7-glucoside may serve as the active principal of GT.     

2013—2016年云南省江城县牛羊蓝舌病血清流行病学调查

为了解近年来云南省江城县蓝舌病病毒（BTV）的感染和流行情况,从2013年5月至2016年4月连续3年在江城县设立监控动物群,每年选择BTV病原及抗体检测阴性牛10头、羊5只作为哨兵动物,用于BTV抗体监测和病毒分离。应用BTV C-ELISA抗体检测试剂盒,对哨兵动物进行血清抗体检测,应用鸡胚、C6/36细胞和BHK-21细胞进行病毒分离。结果显示：连续3年的哨兵动物BTV抗体阳性率分别为40.35%、44.08%、50.65%; 3年内共分离到45株BTV,包括1~5型、15~16型、21型和24型共9种血清型。结果表明,江城县蓝舌病流行有逐年加重趋势,且呈现多种血清型毒株交叉感染状况,亟需加大BTV监测力度,及时发现毒株变化。     

猪伪狂犬病病毒gE蛋白间接ELISA抗体检测方法的建立

以原核表达的猪伪狂犬病毒gE蛋白为包被抗原,建立间接ELISA方法并进行相应优化,研制出了猪伪狂犬病毒间接ELISA抗体检测试剂盒,并与国内市场标杆产品进行比较,发现阳性符合率为88.03%,阴性符合率为91.47%,总体符合率达到89.84%。同时,该试剂盒批间、批内变异系数均小于10%,具有较好的重复性。该检测试剂盒的研制,可为猪场猪伪狂犬病毒野毒感染的检测提供技术支撑。     

政府采购监督几点问题及建议

目前我国政府采购制度体系已初步建立,但是与美国、英国、韩国等政府采购制度比较健全的国家相比,我国政府采购制度还需进一步完善。该文从实际工作角度出发,总结目前执行政府采购制度中存在的问题,分析原因并提出两点建议,希望能对完善政府采购制度,真正发挥政府采购监督职能有所裨益。     

施肥结构对砂质潮土有机质及氮磷钾养分变化的影响

通过在砂质潮土上10年长期定位试验,研究了不同施肥结构对作物产量和土壤有机质及N、P、K等养分在土体中变化的影响。结果表明,单施N肥小麦减产21.1％～34.3％,玉米则增产155.9％～209.7％;单施P肥小麦增产29.3％～39.7％,玉米减产50.4％～63.0％;而N、P肥配施小麦、玉米分别增产3.43～5.79倍和3.04～4.23倍。施有机肥能显著提高作物产量和土壤养分含量,而N、P肥单施或配施仅能维持较低有机质水平,且土壤K耗竭严重。单施N肥N素易于下淋,而N、P肥配施有利于N在土壤上层的保持。有机肥配施N肥或N、P肥是较好的施肥结构。     

利用智能推荐技术改进电子科研档案网络服务质量探讨

改进电子科研档案网络服务质量的智能推荐方法主要包括关联规则的推荐方法、协作过滤推荐技术和聚类方法的推荐技术三种。这些智能推荐方法在客户浏览、检索和购买电子档案产品过程中,对于评价客户的需求、期望和优秀服务的感知度具有广泛的应用。智能推荐方法可评价客户对电子科研档案网络服务和网络资源的满意度,进而向客户推荐适当的电子产品的手段,必将极大地提高电子科研档案网络服务质量。     

娃娃鱼在承德雾灵山试养成功

娃娃鱼是大鲵的俗称,属国家二级重点保护野生动物,具有很高的经济价值,营养价值、药用价值和观赏价值,而且在动物进化史上有着重要的科学研究价值.我国大鲵除新疆、西藏、内蒙古、黑龙江、吉林、辽宁、台湾未见报道外,其余省、自治区都有分布,主要产于长江、黄河及珠江中上游支流的山溪河流中,尤以湖南、四川、湖北、贵州等省为多.大鲵喜阴怕光,生长速度较慢,据报导在野生条件下要5～6年方可性成熟,在人工条件下至少也要3年以上达到商品规格.并且,大鲵人工繁殖较为困难,因此,养殖不很普遍,仅限于湖南、湖北等地的少数养殖场.     

The effects of migration on the immunity of Black-Headed Gulls (Chroicocephalus ridibundus: Laridae)

In order to elucidate the relationship between migration period and immunity related to susceptibility, we conducted research on Black-headed gulls (Chroicocephalus ridibundus). We captured 260 gulls and collected their peripheral blood. Their leukocyte (WBC) count, percentages of heterophils (Het) and lymphocytes (Lym), heterophil and lymphocyte ratio (H/L ratio), and CD4 and CD8α expression levels (CD4 and CD8α, respectively) were quantitatively analyzed over three migration periods (Autumn migration, Wintering, Spring migration). In Adult gulls, WBC counts and CD4 levels significantly increased. Moreover, the Het and H/L ratio decreased from the Autumn migration to Wintering. Conversely, only WBC counts and CD4 levels measurements significantly decreased from Wintering to Spring migration (P<0.05). The tested parameters of the Tokyo-bay population show a greater significant difference than the measurements of immunity of the Mikawa-bay population. This study suggests that the migratory period has a negative effect on an aspect of the immune system. Including the period-difference in the immune systems in the local population, it is necessary to investigate the relationship between the ecology of migratory birds and their immunity.