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In the temperature sensing, the theory of fiber Bragg grating temperature sensing has first been proposed, the characteristic of the FBG temperature sensing was analyzed, it was deduced that the sensitivity coefficients of first-order and second-order ,and experimental findings was protracted, the gained polynomial better inosculate with the theory value. The experiment was processed in the low temperature , the thermo-optic coefficient was emended in the polynomial of the normal temperature ,the result was accorded with the sensing character of the normal and low temperature ,and it was resolved that the theory account of the normal and low temperature did not accord with the experiment.
在温度传感方面,主要从光纤布拉格光栅的温度传感模式出发,对光纤布拉格光栅的温度传感特性进行了分析,推导出了光纤光栅的一阶与二阶温度灵敏度系数,并对实验数据进行了拟和,所得多项式和理论值吻合的很好,并对低温传感进行了实验,将在常温下得出的多项式进行了热光系数的修正,所得的结果同时符合常温与低温的传感特性,解决了低温与常温情况下的理论计算与实验的不一致性。
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According to the above study result, the diversity of microorganisms population in the SUFR system is complex and the bio-community formed in the SUFR system is stable. The close relations between abundance of bacteria and nutrients were found. The correlation between heterotrophic bacteria and COD was 0.949. The correlation between organic phosphate bacteria and TP was 0.815. The correlation between nitrosobacteria and NH3-N was 0.909. The correlation between disnitrifier bacteria and TN was 0.653. These inneglectable great factors effecting on phosphorus-uptake and phosphorus-release of phosphorus accumulating organisms are the influent COD、the concentration of DO、the sludge retention time、the temperature. The diversity of organic phosphate bacteria population in the SUFR reactor was complex and there is no phosphate bacteria taking the absolute superiority in quantity. The near-native pure culture method powerfully complement the traditional pure culture technique and enrich culture technique. The sludgy bioactivity is very good in whole SUFR reactor. By the quality of being biochemistry, the anaerobic phase is higher than anoxic phase and the anoxic phase is higher than aerobic phase of SUFR.
通过以上试验内容研究发现,SUFR 系统中的微型动物种群较多,微生物生态系统稳定;系统中微生物的数量与营养盐的含量密切相关,其中总异养菌与COD的相关系数r 为0.949,有机磷细菌与TP 的相关系数r 为0.815,亚硝化菌与NH4+-N的相关系数r 为0.909,反硝化菌的数量和TN 的相关系数r 为0.653;污水生物除磷工艺中进水COD 的浓度、DO 浓度、泥龄的长短、温度都是影响聚磷菌释磷及吸磷效果的不可忽视的因素;SUFR 系统中的磷细菌呈现种群多样化的趋势,没有占绝对优势数量的磷细菌;微孔滤膜近自然培养法是对传统纯培养技术和富集培养技术的有力补充;整个SUFR 反应器系统中污泥的生物活性很好,就可生化性来讲,厌氧反应器大于缺氧反应器大于好氧反应器;按照动力学方程式求出的细胞生长动力学特征值和SUFR 脱氮除磷系统工艺的实测值结果基本吻合。
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The result was consistent with morphology of Pleuronectiformes on the whole.In the topology founded,Scophthalmus maximus and Solea senegalensis formed an independent branch each other and showed far relationship with species of Bothidae and Pleuronectidae,the phylogenic position of Solea senegalensis is accorded with the reported result of analysis made by mitochondrial genome.
运用PAUP软件对15种鲽形目鱼类与另外7种不同种属鱼类进行了分子系统进化树分析,结果与根据传统的形态学和生化特征分类进化地位基本一致,在15种鲽形目鱼类中只有大菱鲆和塞内加尔鳎各自单独形成一个分支且与鲆科和鲽科鱼类相距较远,其中塞内加尔鳎等种类的分类地位与根据线粒体DNA序列分析的系统发生模式基本吻合。
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But in practical operating, overvoltage caused by reignition of the vacuum switching device frequently appears, and it result in damage of the capacitor bank or the switchgear itself. Ensuring the switchgear against reignition and installing a protective device are two main approaches to avoid the phenomenon. In this paper, a study on overvoltage caused by reignition due to capacitor bank switching with the vacuum switching device and its preventive measures are carried out. The main work which has been done and researches are as follows: 1. The producing mechanism of overvoltage and its influence factor are analyzed. It is pointed out that single-phase reignition is the main reason for damage of the switchgear and two-phase reignition is the main reason for damage of the capacitor bank,so overvoltage of single-phase reignition and two-phase reignition are the emphases of prevention. 2. Analysis of the special working condition of the operating switch for capacitor bank is carried out. It indicates that the vacuum switching device is difficult to realize no-reignition under this operation condition, so it is more practical to adopt protection devices. 3. Analyses of protection effect of RC and MOA and their shortages are carried out. It shows that the two methods can only restrain effectively overvoltage caused by single-phase reignition, and they cannot protect the capacitor bank when reignition of two-phase occurs. 4. The operation principle of G-R damping device is analyzed and discussed emphatically.
本文针对真空开关投切电容器组时因重燃而产生的过电压及其防治措施进行了研究,所开展的主要工作和研究结果如下: 1、对过电压的产生机理及其影响因素进行了分析,指出单相重燃是导致开关设备损坏的主要原因,而两相重燃则是导致电容器组损坏的主要原因,因此单相重燃和两相重燃过电压是防护的重点; 2、对电容器组操作开关的特殊运行条件进行了分析,指出在这种运行条件真空开关难于实现不重燃,因此采用保护装置更具有现实意义; 3、对RC与MOA的保护效果和存在的不足进行了分析,指出这两种方法均只能有效抑制单相重燃过电压,而不能在发生两相重燃时保护电容器组; 4、重点对G-R阻尼装置的工作原理进行了分析和讨论,指出该装置接入后线路中将会出现两种频率的高频振荡,而电容器组上的过电压是由这两种振荡共同决定的; 5、根据对上述两种振荡的分析指出存在一个最佳电阻值使得过电压最低,并提出了电容器组电压和最佳电阻值的近似求解方法; 6、使用电气暂态分析软件MATLAB对G-R装置的保护效果进行了仿真计算,证实该装置确实可以有效抑制重燃时的电容器组过电压; 7、根据仿真与近似计算结果的偏差提出了近似计算的修正方法,经过修正后的过电压计算结果与仿真结果吻合较好; 8、对G-R装置中放电装置G与阻尼电阻R的要求进行了分析,指出采用编织电阻和真空间隙可能是最佳选择。
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Then, according to phase space reconstruct technique from one-dimensional and multi-dimensional time series, the quantitative criterion and rule of system chaos which combine neural network, analyses, computations and sort are conducted on EEG signals of five kinds of human consciousness activities. The author finds that statistic results of the determinism computation in time series indicate that chaos characteristic may lie in human consciousness activities, and central tendency measure is consistent with phase graph, so it may become one division way of attractor; approximate entropy of different subjects exists discrepancy; correlation dimension and Lyapunov exponent of different consciousness activities indicate that attractors of human activities are all fractional; nonlinear quantitative criterion and rule, which unites neural network, can distinguish different styles of consciousness activity in principle, and the result of sortation takes on that consciousness activity type of arithmetic is distinguished more easily than that of abstract.
采用一维与多维时间序列相空间重构技术和系统混沌的定量判据准则,结合神经网络,对五种思维作业方式的脑电信号进行了分析、计算与分类,发现确定性计算的统计结果表明人类的意识活动中可能蕴含混沌特性,中心趋向测量(Central Tendency Measure,CTM)与相图吻合较好,可作为EEG吸引子的区分方法之一;功率谱分析反映出单个受试者的各种意识形态的差异很小,但是不同意识活动谱中的活跃频段还是略有差异的;个体之间的近似熵存在差异,同种状态下近似熵大的人可能具有更好的创新性;关联维数和Lyapunov指数的计算结果表明大脑的运动落在具有分维的奇怪吸引子上;非线性量化方法与神经网络相结合,可对人脑思维活动进行较好的分类,并且从分类结果来看数理计算类思维活动较抽象类思维活动有着更好的区分度。
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The universal primers of ITS1 and ITS4 for fungi were used in amplification of genomic rDNA sequences. A target fragment was obtained by ITS-PCR. Then, the fragment is cloned into the vector of pMD18-T before sequencing. The result of sequencing showed that the fragment is 692 bp in length. The results of Blast in Genbank and the analysis of fungal rDNA systemic development show that the relation between this fragment to the fungi of Sporisorium is closest, while the relation between it to the fungi of Ustilago is much far. It suggests that the name of Ustilago scitaminea for sugarcane smut isn't consistent to the result of rDNA systemic development analysis. It still needs more experiments to support this hypothesis.
用真菌rDNA序列分析的通用引物ITS1和ITS4,通过ITS-PCR得到目的片段,克隆在pMD18-T载体上后进行测序,结果显示该片段的长度为692 bp,与Genebank中已报道的真菌序列进行Blast和系统发育树分析,表明所获得的序列与Sporisorium属真菌具有更高的亲缘关系,而与Ustilago属真菌的亲缘关系较远,这与一直沿用的甘蔗黑穗病菌的命名似乎并不吻合,有待进行更多的研究以证实。
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Considering effect of pile group and non-linear deflection,the internal force and deflection calculated by this method agrees better with data from practice than that of model of hypothetic fixed point.
与假想嵌固点法计算结果比较可知,地基系数折减法考虑了桩的非线性变形与群桩效应,其内力与变形与工程实际更吻合。
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Results:(1) The two nerves were found anatomically related at 5~10 mm and 26~30 mm respectively following hypoglossal nerve entering the muscle.(2)The diameter of the two nerves were observed to match well with each other or with the main branches at 10 mm following the branching of hypoglossal nerve.(3) At 6~10 mm prior to the branching of hypoglossal nerve there was a branch going to the lingual muscles and plexiform of lingual nerve.
结果:(1)舌下神经与舌神经之间有二个恒定的联系部位,即舌下神经分支进入舌肌后最初5~10 mm处和26~30mm处;(2)舌下神经与舌神经最佳吻接部位,我们认为应在舌下神经主干分叉后10 mm左右;神经直径测量也发现神经直径与舌神经主干和分支直径较为匹配,且此区有利解剖,便于神经吻合;(3)舌下神经分叉之前,在神经干上方距分叉约6~10 mm处有一较固定分支,参与分布舌肌并与舌神经呈丛状结构。
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The formation cross sections of the complex between 〓 and quenchers were calculated by using collision complex model. It is found thatthe qualitative tendency of the formation cross sections of complex is inagreement with that of the measured quenching cross sections.
表明猝灭剂分子与〓可能经历了无垒反应过程。5 用碰撞络合物模型模拟了〓(0,4,0)与猝灭剂的碰撞猝灭过程,计算了〓(0,4,0)和一些分子体系的络合物生成截面并与实验猝灭截面相比较,发现计算结果与实验结果定性吻合。
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Results:(1) The two nerves were found anatomically related at 5~10 mm and 26~30 mm respectively following hypoglossal nerve entering the muscle.
结果:(1)舌下神经与舌神经之间有二个恒定的联系部位,即舌下神经分支进入舌肌后最初5~10 mm处和26~30mm处;(2)舌下神经与舌神经最佳吻接部位,我们认为应在舌下神经主干分叉后10 mm左右;神经直径测量也发现神经直径与舌神经主干和分支直径较为匹配,且此区有利解剖,便于神经吻合;(3)舌下神经分叉之前,在神经干上方距分叉约6~10 mm处有一较固定分支,参与分布舌肌并与舌神经呈丛状结构。
- 推荐网络例句
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Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".
歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。
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This is Kate, and that's Erin.
这是凯特,那个是爱朗。
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Articulate the aims, objectives and key aspects of a strategic business plan.
明确的宗旨,目标和重点战略业务计划。