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The methods of the first-and second-order cyclic statistics-based hybrid and the first-and third-order cyclic statistics-based hybrid have been proposed. Using the first order cyclic statistics, the frequencies of harmonics corresponding to nonzero mean multiplicative noise were obtained. Then the mean of multiplicative noise can be estimated. With this, harmonics can be retrieved by second or third order cyclic statistics.

提出了基于一阶、二阶循环统计量的混合方法和基于一阶、三阶循环统计量的混合方法,即先利用一阶循环统计量得到对应非零均值乘性噪声的谐波频率,再求出与谐波频率对应的乘性噪声均值,去均值后用二阶或三阶循环统计量来恢复谐波。

RESULTS: Of the 126 patients, 8(6. 3%) patients were confirmed of total anterior circulation infarction, 29 (23. 0%) of part anterior circulation infarction, 78(61.9%) of lacunar infarction, 11(8.7%) of posterior circulation infarction . They were followed-up for 6 months, and meanwhile 12 patients died. Of the other 114 cases the prognosis of TACI was the worst, while the prognosis of POCI and LACI was relatively better than that of PACI.

结果:在126例脑梗死患者中,完全前循环梗死8例(6.3%),部分前循环梗死29例(23.0%),腔隙性梗死78例(61.9%),后循环梗死11例(8.7%);随访期间12例患者死亡,114例完成了6个月随访,TACI的预后最差,POCI和LACI预后相对较好,PACI次之。

The plastic deformation induced due to cyclic rotation of principal stress axes alone can be in the same magnitude as that due to shear with fixed principal stress axes. 2 The volumetric strain due to shearing of cyclic rotation of principal stress axes is found to be composed of a reversible dilatancy component and an irreversible dilatancy component. The former is characterized by its reversibility and is independent of past shear history, the latter by its irreversibility increases with the increase of cycle number yet its increase rate decreases with its accumulation. 3 The obvious non-coaxiality between directions of the principal stresses and principal strain increments is found and its degree depends largely on the change of shear stress component. 4 The intermediate principal stress has considerable effects on the deformation behavior of sands in the condition of cyclic rotation of principal stress axes. The accumulation rate of the irreversible dilatancy component increases with the increase of the intermediate principal stress parameter.

具有初始各向异性的砂土在纯应力主轴循环旋转排水条件下的主要变形规律为:①纯应力主轴循环旋转可产生与应力主轴固定单调剪切处于同一数量级的塑性变形;②纯应力主轴循环旋转引起的剪切体变包含可逆性剪切体变分量和不可逆性剪切体变分量两部分,其中可逆性剪切体变分量在一周内可完全恢复,基本与应力历史无关;不可逆性剪切体变分量随循环周数的增加呈单调增加,且增加速率随其自身累积值的增大呈减小趋势;③应变增量主轴与应力主轴之间的非共轴现象显著,且在一周内具有分段性;④中主应力对应力主轴循环旋转条件下砂土的变形特性有重要影响,不可逆性剪切体变分量的累积速率随中主应力系数的增加而增加。

Dynamic respiratory compliance and total respiratory resistance were measured before surgical incision, after sternal closure in the operating room, and after arrival in the intensive care unit. The following data were recorded: age, weight, preoperative pulmonary infiltrates, preoperative mechanical ventilation, evidence of increased PBF before surgery, duration of CPB, duration of aortic cross-clamp, duration of deep hypothermic circulatory arrest, use of steroids, and volume of ultrafiltrate removed.

分别在麻醉诱导后、手术结束关胸后和返回ICU后3个时间点测定患儿的肺动态顺应性和全肺阻力,并记录患儿年龄,体重,术前胸片浸润性改变情况,术前机械通气情况,术前肺血流量增高情况,体外循环时间,主动脉阻闭时间,深低温停循环时间和体外循环中超滤量等参数。

The results show that the sample is well dispersed particles with high purity and an average size of about 1 μm. Favorable substances of Ca2 and Sn appear during the cycling of zinc electrode containing CaSn6, Ca2 has continues to react with ZnO to produce calcium zincate, which can highly reduce the dissolvability of anode active materials and greatly improve the cycling performance of zinc electrode. The simulated Ni/Zn battery using CaSn6 and ZnO as the active material of zinc electrode has a high discharge plateau and an excellent cycling ability, and it can retain about 72.6% of initial discharge capacity after 50 charge-discharge cycles.

研究结果表明:通过共沉淀方法合成的CaSn6粒度分布均匀,平均粒径在1 μm左右,并且具有较高的纯度;添加CaSn6的锌负极在循环过程中游离出了Ca2和金属锡等有益物质,并进一步与ZnO反应生成锌酸钙,降低了锌负极活性物质在电解液中的溶解性,从而显著提高了锌电极的循环性能;以CaSn6与ZnO的混合物为负极活性物质的模拟锌镍电池具有较高的放电平台和优良的循环性能,经过50次循环后,电池放电容量保持为起始容量的72.6%。

I have finished the ratio calculation of mw materials used to produce cementclinker, relative environmental impact importance assessment of emissions andenvironmental synthetic index under different conditions.the result means that we can selectthe optimal procession parameter and optimal procession ,considering environmentalactor ,mechanic erect kiln is the best one among the different kilns.the procession of closed-loop recyclable concrete is introduced in detail ,we found it is possible to make full use ofwasted concrete illimitedly by proper design ,though the recyclable concrete physicalfunction decreased a little comparing with virgin concrete, it's environmental property ismuch better than usual concrete.we also found that it is possible to use wasted concrete asthe coarse aggregate or fine aggregate.we probe the possiblity that fuzzy mathematics isused to judge whether a product is green product or not.

确定了不同窑型的最佳的工艺操作参数;比较了不同窑型的环境性能,得出结论:预分解窑是最佳的工艺选择。本软件具有专家系统的功能,本软件的最大特点是动态性和灵活性,这是为人为的因素,地方的因素变化性而设计的。允许输入不同的边界条件,即可得到不同的结果,这为水泥-混凝土的环境化设计提供了有力的帮助。本人也努力设计一个适用于水泥厂的数据库的框架,来实现水泥厂的在线评估。本文探讨了实现环境化设计的可再循环的混凝土的设计,得出结论:通过合理设计的混凝土的无限循环是可能的,虽然再循环的混凝土的性能与原混凝土相比有所下降,但其环境性能是普通混凝土无法比拟的,本文还探讨了废混凝土的利用的可能性及评估,废混凝土用作混凝土的粗集料是合适的,虽也可作细集料,但不值得提倡。

In this thesis, firstly, some main models have been checked on their accuracy, and the reliability of MACORS code has been verified by the RELAP5/MOD2 code on five transient conditions for QSNP: loss of flow; loss of offsite power; incontrollable control rod withdrawal; the feed-water temperature increasing and the feed-water lost. The results obtained are very satisfactory. Secondly, MACORS is used to calculate the operating and accident transients for QSNP, and the analysis results are significant to real engineering. And finally for MNRS, MACORS is used to simulate the steady-state natural circulation heat-removed capacity and the transient behaviors from forced circulation to natural circulation. Some important conclusions are obtained by the analysis results.

本论文首先从各方面对核动力系统中最主要的、热工水力特性最复杂的反应堆和蒸汽发生器进行单独验证和理论分析,其次分别利用RELAP5/MOD2程序和MACORS程序对秦山核电站的双环路失流、全厂断电、反应性事故引入、主给水参数变化及丧失主给水五种瞬态工况进行了计算,结果符合很好,从而证明了本程序模型的准确合理性,选择数值方法的有效性和编制程序的正确性;尔后,利用MACORS程序对秦山核电站的多种运行及事故瞬态进行了分析,得出了具有工程价值的结论;对船用核动力装置的稳态自然循环载热能力以及相应参数的特性、强迫循环与自然循环的过渡工况等进行了仿真分析,所得结论对我国核动力船舶的设计,运行以及安全审评具有重要的意义。

When the self-etched adhesives (Contax, Clearfil TRI-S Bond) were used for the surface treatment of sclerotic dentin, the results of thermal circlings showed that, for Contax, 5,000 times thermal circlings did not weakened the bond strength, while the bond strength after 10,000 times thermal circlings significantly lower than that before circling; for Clearfil TRI-S Bond, 5,000 times thermal circlings significantly weakened the bond strength, while 10,000 times thermal circlings weakened it further.

选择自酸蚀系统粘接剂Contax和Clearfil TRI-S Bond粘接非龋性硬化牙本质,分别测量冷热循环0次,5000次及10000次时的微拉伸粘接强度,结果显示:Contax粘接剂冷热循环5000次后粘接强度无明显下降,而循环10000次后粘接强度明显下降;Clearfil TRI-S Bond粘接冷热循环5000次后粘接强度明显下降,循环10000次后粘接强度进一步下降。

The paper summrized lubrication technology and the selection of lubricant for rotary kiln, grate cooler, mill, conveyor mechanical equipment and large scale fan as following,(1)in rotary kiln, apply oil spoon of circulatory lubrication or pump forced oil supply system in the roller supporting mechanism and use (superscript #)680 high load industrial gear oil, and use lubrication method of idle oil wheel or spray in drive gear wheel and select solid lubricant which has high viscosity, strong adsorbability, good abrasion resistance in utmost pressure and lattic crystal structure,(2) in grate cooler, use immersion oil lubrcation in reducer and boiled oil centralized lubrication method in supporting roller and guide roller bearing, choose (superscript #)1 limit pressure lithium lubrcant grease,(3) in mill, use circulatory lubrication with fluxing oil station in drive mechanism and circulatory lubrication with high-low pressure fluxing oil station in main bearing and sliding shoe bearing and select N320 industrial gear oil.

文章全面总结了回转窑、篦冷机、磨机、输送机械及大型风机的润滑技术和润滑剂的选择。其中,(1)回转窑的托轮支承装置一般采用油勺供油的连续循环润滑方式或油泵强制供油系统,润滑油选用680重负荷工业齿轮油;传动大小齿轮的润滑一般采用带油轮或喷雾的润滑方式,润滑剂宜选用粘度高、吸附性强、极压耐磨性好、具有点阵晶体结构的固体润滑剂;(2)篦冷机中传动减速机的润滑一般采用浸油飞溅润滑;托轮,挡轮轴承的润滑一般采用干油集中润滑的方式,润滑脂一般选用锥入度310~340的1极压锂基润滑脂;(3)磨机中传动装置一般采用稀油润滑站循环润滑和冷却的方式;主轴承或滑履轴承的润滑一般采用高低压稀油润滑站循环润滑和冷却的方式,润滑油一般选用N320工业齿轮油。

Of 15 stenotic coronary arteries(14 occluded) with wellestablished collateral vessels, 14 displayed high signal intensities,while of the other 25 vessels (1 occluded) without any collateral vessels, only 11 had high signal intensities within the related segments.

延迟扫描序列显示其中16例的25支(62.5%)心肌节段呈高信号。16例中11例临床诊断心绞痛患者延迟扫描阳性。15支狭窄冠状动脉(11支闭塞)有侧支循环形成,延迟扫描显示14支相应心肌节段阳性;25支狭窄冠状动脉(1支闭塞)无侧支循环,11支相应心肌节段呈高信号,两者延迟扫描阳性率差异有显著性意义(Fisher精确检验P<0.001)。

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