错断井大修套内扶正取套工艺及效益评价

本文着重介绍了浅层油水井大修扶正取套工艺技术的原理、应用及所取得的成果,并着重简明阐述了大修错断取套工艺技术在油田大修作业领域所起到的重要作用及应用前景,为老油田油水井大修取套工艺提出了一条鲜明的技术思路。     

无菌鼠模型制作方法与评价

无菌动物特别是无菌大鼠、小鼠的成功培育技术成为研究微生物与人类生命现象关系的关键技术。严格的无菌动物是指在动物体宿主内外任何部位及生活环境中均检测不出一切生命体。广义的无菌动物还包括清除肠道中大部分菌群的动物,又称为伪无菌动物。目前制作无菌鼠的方法主要有剖腹取胎无菌饲养法制作无菌鼠模型,抗生素鸡尾酒法制作伪无菌鼠模型。本文对无菌鼠模型的制作方法进行总结并对其优缺点进行评价。     

洞穴追凶

正近几年中,上百万只北美蝙蝠不明不白地神秘死去,令科学家们忧心忡忡。谁是杀害蝙蝠的元凶?科学家们进入洞穴,展开调查……在马默斯洞追踪罪魁祸首在美国肯塔基州中部猛犸洞穴国家公园,有一个名叫"马默斯洞"的洞穴。"马默斯"在英语中是"猛犸"的意思,因此马默斯洞也被叫作"猛犸洞"。马默斯洞既深又长,是迄今发现的世界上最长的洞穴。终年幽蔽、潮湿的洞穴里,正在冬眠的蝙蝠蜷缩着身躯悬掉     

鸟类会大规模灭绝吗？

西班牙《趣味》杂志发表了题为《困鸟》的文章,作者华纳·布兰科在文章中称,美国斯坦福大学的一项研究预计,到2100年有6％-14％的鸟类或将灭绝;7％-25％的鸟类由于个体数量过少,无法再承担生态系统中的角色;大约52％的鸟类面临大规模的数量减少.其中,并不是只有白肩雕和松鸡濒临灭绝,很多常见的鸟类,例如燕子、麻雀和石鸡的数量,也因人类活动造成栖息地破坏而逐年减少.     

夏季养生宜喝花茶

<正>在炎热的夏季,有不少人都喜欢饮茶消暑。饮茶是一种文化,饮茶也是很讲究的,夏季喝花茶有好处也有禁忌的事要注意,只有采取正确的饮茶方法才能有益健康,否则影响身体健康。那么,夏季养生喝花茶,喝花茶有哪些注意事项?针对这个问题,下面就为大家详细介绍一下夏季养生喝花茶要注意的事项,希望能够引起大家的重视。     

谈后腹腔镜下输尿管切开取石术的护理

在后腹腔镜下输尿管切开取石术具有切口小,出血量少,手术时间短,并发症少及术后康复快等优点。我院于2007年6月-2009年9月间对40例输尿管结石患者实施了在后腹腔镜下输尿管切开取石术,并进行整体护理观察,得到了较满意的疗效。     

公路建设项目中取弃土场对生态环境的影响-以省道S208嫩江至多宝山段工程为例

本文通过对省道S208嫩江至多宝山段公路项目的建设,分析评价其取弃土场对生态环境的影响。     

《瘗鹤铭》雷门鼓事试析

《瘗鹤铭》引用的雷门鼓事传说,在《金山本》中表述为“山阴降迹”,而在其他文本中则为“雷门去鼓”。前者表示鼓震洛阳、仙鹤神异的事迹;后者体现的是鼓破不鸣鹤飞的内容。对照铭文,用典是为了突出仙家身世,故当以《金山本》的表述最具原真,并从中折射出东晋侨民怀念故都洛阳的情感。     

Why endophenotype development requires families

Endophenotypes are heritable quantitative traits that are associated with disease liability, can be measured in both affected and unaffected individuals, and provide much greater power to localize and identify risk genes for mental illness than does affection status alone. Traditionally, endophenotypic markers for psychiatric illnesses include in vivo neuroanatomic and functional magnetic resonance imaging measurements and indices of neurocognitive abilities. However, neurocognitive and neuroimaging measures are by no means the only classes of endophenotypes that could be useful for identifying genes for mental illness. Given the advantages of endophenotype-based strategies for elucidating the genetic underpinnings of psychiatric disorders, it would seem prudent to develop a wide range of putative endophenotypes. In order for a measure to be considered a valid endophenotype, it must meet a number of criteria. Specifically, the trait must (1) have moderate to high heritability, (2) be associated with the illness, (3) be independent of clinical state, and (4) impairment must co-segregate with the illness within a family, with non-affected family members showing impairment relative to the general population. While each of these criteria is critical, the heritability and co-segregation requirements are really what differentiate an endophenotype from a simple biomarker. At this time, one requires an experimental design that includes families to demonstrate both heritability and co-segregation. The assertion that novel endophenotypes can not be fully established without family data does not preclude work in unrelated individuals, rather that unrelated samples will only be able to nominate potential candidate endophenotypes that subsequently need to be confirmed in family-based experiments.     

多通道微创经皮肾镜取石术后并发症的护理

总结69例多通道微创经皮肾镜取石术后及术后并发症的护理经验.探讨了微创经皮肾镜下治疗肾结石术后护理.结果显示,63例行1次PCNL,6例行2次PCNL,1例行2次PCNL后仍有残留结石,经体外冲击波碎石后全部清除结石.术后发生并发症6例,其中出血1例、尿外渗2例、感染性休克1例、双J管移位或脱落2例.通过引流、抗感染、...