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许国军 《杭州师范学院学报(自然科学版)》2005,4(3):182-183
目的探讨脾破裂术后血小板增多的过程和处理。方法对18例脾破裂行脾切除术后血小板升致520~790×109/L患者的临床资料进行分析总结。结果18例患者术后第二天血小板逐渐增多,术后1~2周达到高峰值。血小板>380×109/L时开始用药,用药约3周后均降至正常水平。结论对外伤性脾破裂患者应尽量采用保脾手术,脾切除术后血小板>380×109/L时应考虑使用药物预防静脉血栓形成。 相似文献
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Summary The platelet membrane insulin receptors of healthy and non-insulin dependent (type 2) diabetic patients were studied. Receptor number and affinity proved to be decreased in type 2 diabetes mellitus. The changes in platelet insulin receptor characteristics are in good correlation with the alterations reported in other tissues or cells. The possible role of these phenomena in the pathogenesis of disturbed platelet function in diabetics needs further investigation. 相似文献
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Yu. Yu. Chirkov I. A. Tyshchuk I. S. Severina 《Cellular and molecular life sciences : CMLS》1990,46(7):697-699
Summary The activity of human platelet guanylate cyclase, and the activation of the enzyme by sodium nitroprusside were decreased in platelets with increased aggregability; these platelets were obtained from diabetes mellitus patients. Anomalies in guanylate cyclase activity and ADP-induced aggregation were more pronounced in platelets from subjects with type II than those with type I diabetes. 相似文献
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长期以来煤矿瓦斯灾害一直是制约煤矿安全、高效生产的重要因素。随着矿井开采深度的增加,瓦斯超限现象时有发生,给矿井生产带来了安全隐患。对于透气性系数低,抽放困难的煤层,管理上很难实现“掘、抽、采”的平衡。为此,王行庄煤矿引进了定向水力压裂增透技术,并成功的进行了现场试验;试验结果显示,水力压裂后,瓦斯抽放量大幅度上升,水... 相似文献
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AGLET 作为一种代理技术自身的安全性面临着许多威胁,为了增强 AGLET 自身的安全性,在 AGLET 系统中引入了增量时间戳安全技术,增量时间戳技术利用每个服务器维护的两张表(T 表和 F 表)来判断 AGLET 对象的时间戳是否是合法的,这样就可以有效的解决重复攻击和越权访问等安全问题。因此,利用互质增量时间戳技术就可以较好地解决了移动代理系统中的一些安全问题。 相似文献
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Components of biological,including seasonal,variation in hematological measurements and plasma fibrinogen concentrations in normal humans 总被引:2,自引:0,他引:2
M. Maes S. Scharpé W. Cooreman A. Wauters H. Neels R. Verkerd F. De Meyer P. D'Hondt D. Peeters P. Cosyns 《Cellular and molecular life sciences : CMLS》1995,51(2):141-149
This study has been carried out in order to examine the components of biologicalaand, in particular, seasonal variation in hematologic measurements in normal humans. Toward this end, 26 normal volunteers had monthly blood samplings during one calendar year for determination of number of red blood cells (RBC) and platelets, hemoglobin (Hb), hematocrit (Ht), mean corpuscular volume (MCV), MC Hb (MCH), MC Hb concentration (MCHC), RBC distribution width (RDW), mean platelet volume (MPV), platelet distribution width (PDW), plateletcrit (PCT), and plasma fibrinogen concentrations. The data were analyzed by means of spectral analyses of a group of time series or a single time series, and by means of repeated measures analyses of variance. Most of the hematologic variables show seasonal rhythms, such as annual rhythms or harmonics, which are expressed as a group phenomenon. An important part of the variance (>15%) in Ht, MCV, MCH, MCHC, RDW, number of platelets, MPV and plasma fibrinogen was explained by a yearly variation. The peak-trough differences (expressed as a percentage of the mean) in the yearly variations in number of RBC, Ht, MCV, MCH, MCHC and RDW were very low (all<8.5%). Number of platelets (14.4%) and plasma fibrinogen values (28%) showed a high-amplitude yearly variation. All hematological variables, except MCHC, show a high interindividual variability which exceeds by far the intraindividual variability. 相似文献
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基于案例的推理技术在自动答疑系统中的应用 总被引:11,自引:0,他引:11
自动答疑系统是人们从网络获取信息的重要辅助工具。将基于案例的推理技术引入传统的自动答疑系统,并结合用户交互机制,提出了一种基于案例推理的交互式自动答疑引擎。该引擎通过对问题关键字的描述来触发案例,并根据它们与问题的关联程度进行排序;同时,利用交互机制从用户端获得反馈并及时有效地对关键字的权重进行修正,提高了答疑的准确性。此外,对传统二层案例结构进行了三层扩展,提高了系统的可扩展性和易维护性。 相似文献
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化学浅调剖技术是注水结构调整的重要手段。南一区高台子油层为三角洲前缘相沉积,储层纵向层间矛盾突出,但各单元储层发育规模较小,细分单卡余地小,给油田开发调整带来困难。应用在前缘相沉积体系渗流特征和化学浅调剖技术结合上进行了探索和研究,建立了前缘相沉积体系主流带调剖模式。提出了前缘相调剖的新思路,新方法。深化了注水结构调整,控制了前缘相沉积体系的含水上升速度,见到了明显的技术经济效果,具有广阔的应用前景。 相似文献