Six variables stand out as important indicators of risk : ( 1 ) advanced age , ( 2 ) low preoperative red blood cell volume ( preoperative anemia or small body size ) , ( 3 ) preoperative antiplatelet or antithrombotic drugs , ( 4 ) reoperative or complex procedures , ( 5 ) emergency operations , and noncardiac patient comorbidities 它突出了作为重要风险指标的六个参量： （ 1 ）老年， （ 2 ）术前低血红细胞比容（术前贫血或小体型贫血） ， （ 3 ）术前应用抗血小板或抗血栓形成药， （ 4 ）再手术或复杂手术， （ 5 ）紧急手术， （ 6 ）非心血管病人的共病。
The surface modification of foils contributes to the activation of surface before etching , and consequently provides more pit sites . the redemption and regeneration of passive film on foil surface lead to continuous growth of tunnels . anodized in oxide - forming acid , the etched foil shows higher capacitance 侵蚀前铝箔的表面改性处理研究了碱性、酸性溶液、直流电和低频交流电对比容的影响，结果表明碱性溶液和酸性溶液处理有利于活化表面、提高比容；直流电和低频交变电流表面改性需严格控制时间在5s内，最佳为2s ，可提高比容8 10 。
After dipped in amino trimethylene phosphonic acid ( atmp ) solution , anodic oxide films are annealed in pipe stove . the influences of concentration and temperature of atmp solution and annealing temperature on rising time , withstanding voltage and specific capacitance of anodic oxide films are studied . after hydration , anodic oxide films treated with atmp or not are analyzed by ft - ir 2 .将化成箔在氨基三甲叉膦酸( atmp )溶液中浸渍,取出烘干后再进行热处理,研究了atmp溶液浓度、浸渍温度和热处理温度对氧化膜升压时间、比容、耐电压的影响,找到其最佳耐水合处理工艺;采用ft - ir对水合作用后的atmp处理氧化膜和未经耐水合处理氧化膜进行了分析。
Based on the actual state of improving hydration resistance of anodic oxide films in the world , hydration resistance and its technologies are explored and investigated . hydration resistance mechanisms and effects of technologic parameters on rising time , specific capacitance and withstanding voltage are expatiated 根据目前国内外铝阳极氧化膜耐水合特性改善技术的研究现状,主要针对耐水合处理试剂及其处理工艺问题作了创新性和探索性研究,并对耐水合处理试剂的作用机理和工艺参数对氧化膜升压时间、耐电压及比容的影响进行了详细研究。
The relationship between capacitance and corrosion conditions in the enlargement of tunnels justifies the latter competition mechanism the varied etching conditions were implemented by enhancing the passivating characteristics and viscosity , changing the a13 + concentration , temperature of etchants and current pulsation . passivating acid in the etchant is conducive to the instant passivation of exposed areas on the foil surface , and hence sustains the balance of competition between aggressive anions and passivators , providing pit nucleatiori sites continuously 通过侵蚀液中添加草酸、硫酸、乙二醇，改变侵蚀液al ~ ( 3 + )浓度和电流纹波等方法，研究了不同的侵蚀条件对隧道孔形貌和比容的影响，结果表明：草酸和硫酸既保护了铝箔表面又促进了隧道孔孔壁的迅速钝化，增加发孔密度。
A competition mechanism throughout the tunnel etching of aluminum foils is established in this study , namely , the competition between the attack to passive surface by aggressive anions and the passivation caused by passivators ; dissolution competition between side wall of tunnels and overall surface of foils . to demonstrate the competition mechanisms , the etching conditions influencing the morphology of tunnels , surface modification of foils , redemption and regeneration of passive state were investigated 本文在综述了目前国内外铝阳极箔发展和直流电侵蚀理论的基础上，研究了铝箔侵蚀过程中影响隧道孔形貌和比容的各种因素，揭示了贯穿于整个侵蚀过程的竞争规律，即蚀孔成核竞争? ?铝箔表面的活化与钝化竞争；溶解竞争? ?隧道孔孔壁的溶解与侵蚀箔表面的溶解竞争。
By using an oxide that could reversibly intercalate ili instead of 0 . 5 li per 3d - metal , one could increase the specific capacity of the cell by 68 % . in contrast , if one doubles the specific capacity of the negative electrode ( liq - lice ) , one increases the overall specific capacity of the cell by only 12 % 如果正极的比容量增加一倍，即每个3d金属能嵌入1个理，那么电池的比容在量就能增加68 ；如果负极的比容量增大1倍，那么电池的比容量只增大12 ，所以对埋离于电池的研究主要应放在对正极材料的研究上， limn 。
The optimum concentration and temperature of dtpmp solution and optimum annealing temperature are discussed . in addition , hydration resistant effect of anodic oxide films treated with adp , atmp and dtpmp respectively is discussed through ft - ir , xps , afm and i - v characteristics testing 探讨了dtpmp溶液浓度、浸渍温度和热处理温度对氧化膜升压时间、比容、耐电压的影响,并找到其最佳耐水合处理工艺;同时采用ft - ir 、 xps 、 afm和i - v特性测试对adp 、 atmp 、 dtpmp三种试剂对氧化膜的耐水合处理效果进行了对比研究。
The second , the molecule dynamic method ( md ) has been used to investigate the nature of at high temperature and pressure . the primary results is ( 4 ) that is really a reduced minorant but not a continuous function of temperature ? there a interrupt where material transfer its state from solid to liquid . the third , some methods which to get directly by experiments and their results have been discussed 第二方面，以分子动力学方法研究了晶格随比容和温度的变化规律问题，获得的主要认识为( ： 4 )晶格(至少对于铜、铝)的确是温度的函数，并且是弱函数，但不是温度的单调(下降)函数? ?其基本变化规律在固液相变点有一间断(跳升) 。
Theory simulation results show that the methods mentioned are feasible to detect and estimate the short pn sequence modulation ds signals whose pn sequence length is 63 to 1023 . the delay and multiply approach can be used to estimate the chip rate of long pn sequence modulation ds signals , and the improved algorithm of it is available in lower input snr . the performance of the 延时相乘法对长pn码调制信号pn码速率估计也适用,其改进法的信噪比容限比改进前降低;二次功率谱法和倒谱法对短pn码调制有很好的检测和估计性能,但对长pn码调制不适用,而基于延时相乘的二次功率谱法可以很好的估计出长pn码调制信号的pn码周期。
