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| 1 | 产后出血的预防和处理指南显示文摘目的:为产后出血(PPH)的预防和临床处理作一综述,为临床医师提供预防和处理产后出血的指南。涉及方面:预防、适当干预、使其影响最小化的方法。结果:建立常规,便于临床医师鉴别可能的高危人群,一旦发生产后过多出血,可指导临床如何迅速处理。证据:遵循加拿大定期健康检查办公室制定的证据等级。评估:由产科专家完善。利弊和成本:评估子宫收缩药和其他积极处理措施的方便性、正确性、有效性和安全性。建议:根据证据的等级,本指南分等级列出了12条建议。确认:按照MeSH词表推荐的postpartum haemorrhage在medline上查询相关文献,在Cochrane图书馆查找相关研究文献,并参考the ALARMcourse Manual。发起人:由产科临床实践委员会制定和综述,并由SOGC(加拿大妇产科协会)委员会批准。 | Nan Schuurmans MD FRCSC, Edmonton AB Catherine MacKinnon MD FRCSC, Brantford ON Carolyn Lane MD CCFP Calgary AB Duncan Etches MD CCFP Vancouver BC 刘铭(译) 段涛(译) | 2007 | 现代妇产科进展2007，16，3： | 152 |
| 2 | A statistical model for porous structure of rocks显示文摘The geometric features and the distribution properties of pores in rocks were in- vestigated by means of CT scanning tests of sandstones. The centroidal coordi- nates of pores, the statistic characterristics of pore distance, quantity, size and their probability density functions were formulated in this paper. The Monte Carlo method and the random number generating algorithm were employed to generate two series of random numbers with the desired statistic characteristics and prob- ability density functions upon which the random distribution of pore position, dis- tance and quantity were determined. A three-dimensional porous structural model of sandstone was constructed based on the FLAC3D program and the information of the pore position and distribution that the series of random numbers defined. On the basis of modelling, the Brazil split tests of rock discs were carried out to ex- amine the stress distribution, the pattern of element failure and the inosculation of failed elements. The simulation indicated that the proposed model was consistent with the realistic porous structure of rock in terms of their statistic properties of pores and geometric similarity. The built-up model disclosed the influence of pores on the stress distribution, failure mode of material elements and the inosculation of failed elements. | JU Yang1,2, YANG YongMing1, SONG ZhenDuo3 & XU WenJing4 1 State Key Laboratory of Coal Resources and Safe Mining, China University of Mining & Technology, Beijing 100083, China 2 Department of Mechanical and Manufacturing Engineering, The University of Calgary, 2500 University Drive NW Calgary, AB T2N 1N4, Canada 3 China National Coal Mining Equipment Co. Ltd, Beijing 100011, China 4 Department of Materials and Metallurgy, The University of Utah, Salt Lake City, Utah 84112, USA | 2008 | Science China(Technological Sciences)2008，51，11： | 21 |
| 3 | Experimental study of dynamic mechanical properties of reactive powder concrete under high-strain-rate impacts显示文摘The dynamic mechanical properties of reactive powder concrete subjected to compressive impacts with high strain rates ranging from 10 to 1.1×102 s-1 were investigated by means of SHPB (split-Hopkinson-pressure-bar) tests of the cylindrical specimens with five different steel fiber volumetric fractions.The properties of wave stress transmission,failure,strength,and energy consumption of RPC with varied fiber volumes and impact strain rates were analyzed.The influences of impact strain rates and fiber volumes on those properties were characterized as well.The general forms of the dynamic stress-strain relationships of RPC were modeled based on the experimental data.The investigations indicate that for the plain RPC the stress response is greater than the strain response,showing strong brittle performance.The RPC with a certain volume of fibers sustains higher strain rate impact and exhibits better deformability as compared with the plain RPC.With a constant fiber fraction,the peak compressive strength,corresponding peak strain and the residual strain of the fiber-reinforced RPC rise by varying amounts when the impact strain rate increases,with the residual strain demonstrating the greatest increment.Elevating the fiber content makes trivial contribution to improving the residual deformability of RPC when the impact strain rate is constant.The tests also show that the fiber content affects the peak compressive strength and the peak deformability of RPC in a different manner.With a constant impact strain rate and the fiber fraction less than 1.75%,the peak compressive strength rises with an increasing fiber volume.The peak compressive strength tends to decrease as the fiber volume exceeds 1.75%.The corresponding peak strain,however,incessantly rises with the increasing fiber volume.The total energy Edisp that RPC consumed during the period from the beginning of impacts to the time of residual strains elevates with the fiber volume increment as long as the fiber fraction is not larger than 2%.It turns to decrease if the fiber volume exceeds 2%.The added fibers make various contributions to enhancing the capability of RPC to consume energy at different loading stages.If the fiber fraction is not larger than 2%,the added fibers make more contribution to enhancing the energy consumption ability of RPC in the period before the peak strain than in the period after the peak strain.The impact strain rate,however,distinctively affects the total energy that RPC consumed and the energy consumed in the different loading periods.The higher the impact strain rate,the more the energy consumed in the stages and therefore the higher the dynamic impact toughness.The empirical relationships of the peak compressive strength,corresponding peak strain,residual strain,total consumed energy and the energy consumed in the varied periods with the impact strain rate and the fiber fraction are derived.Four generalized forms of the dynamic impact stress-strain responses of RPC are formulated by normalizing stresses and strains as the generalized coordinates and by taking account of the influences of impact strain rates and fiber volumetric fractions. | JU Yang1,2,LIU HongBin1,SHENG GuoHua1,3 & WANG HuiJie1 1 State Key Laboratory of Coal Resources and Safe Mining,Beijing Key Laboratory of Fracture and Damage Mechanics of Rocks and Concrete,China University of Mining and Technology,Beijing 100083,China 2 Department of Mechanical and Manufacturing Engineering,University of Calgary,2500 University Drive,AB T2N 1N4,Canada 3 School of Resources and Civil Engineering,Northeastern University,Shenyang 110004,China | 2010 | Science China(Technological Sciences)2010，53，9： | 8 |
| 4 | Seismic response of tall building considering soil-pile-structure interaction显示文摘The seismic behavior of tall buildings can be greatly affected by non-linear soil-pile interaction during strongearthquakes. In this study a 20-storey building is examined as a typical structure supported on a pile foundation for differentconditions: (1) rigid base, i.e. no deformation in the foundation: (2) linear soil-pile system; and (3) nonlinear soil-pile system.The effects of pile foundation displacements on the behavior of tall building are investigated, and compared with the behavior ofbuildings supported on shallow foundation. With a model of non-reflective boundary between the near field and far field,Novak's method of soil-pile interaction is improved. The computation method for vibration of pile foundations and DYNANcomputer program are introduced comprehensively. A series of dynamic experiments have been done on full-scale piles,including single pile and group, linear vibration and nonlinear vibration, to verify the validity of boundary zone model. | Han Yingcai Fluor Canada Ltd.,Calgary,AB,Canada Ph.D.,Principal Engineering Specialist | 2002 | Earthquake Engineering and Engineering Vibration2002，1，1： | 5 |
| 5 | Prenatal screening, diagnosis, and pregnancy management of fetal neural tube defects 显示文摘 | WILSON RD CALGARY AB FRANCOI S | 2014 | J Obstet Gynaecol Can2014，36，10： | 1 |
| 6 | 新分子学技术在产前诊断非整倍性染色体疾病中的应用显示文摘目的综述分子学技术在快速产前诊断胎儿非整倍性染色体疾病中的应用进展,及尚处于研发阶段的新性技术。局限性本文仅初步探讨了快速非整倍性染色体疾病诊断的方案。证据来源 MEDLINE数据库1992年至今的相关文献,本文提供其摘要信息。证据价值本报道所涉及技术进展由加拿大妇产科学会基因委员会提供,由加拿大妇产科学会执行委员会批准。收益、风险及成本本进展提供了分子学技术快速诊断非整倍性染色体疾病的方法,以及支持上述技术在胎儿产前诊断临床应用的证据。此类方法在诊断胎儿非整倍性染色体疾病方面具有可靠、低成本的特点,但在诊断整倍体性的染色体畸变等疾病方面,部分疾病虽然临床特征很显著,这些分子学技术仍显示出不足之处。 | Rebecca Sparkes MD Calgary AB Jo-AnnJohnson MD Calgary AB SylvieLanglois MD Vancouver BC | 2010 | 中国产前诊断杂志(电子版)2010，，3： | 0 |
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