影响...
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Temperature field of cross section, full curve under fire and related factors of them are analyzed.
5对轻钢-混凝土组合梁的抗火性能进行了研究:分析了截面的温度场及其影响参数;计算了构件的抗火全过程曲线,并分析了截面参数对全过程曲线的影响;采用抗力折减系数的方法研究了轻钢-混凝土组合梁承载力随受火时间的变化,并分析了各参数对抗力折减系数的影响
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Analysis is made on block effect to cutters of PDC bit with 3 factors: different top shape,cutter-distributing and wearing degree.By the interaction(radial range and altitude difference of each cutter) of three adjacent cutters,the cutter block is further analyzed with these factors,but wearing degree is simplified to be considered as the cutters vertical to the assembling plane.
中文摘要:对PDC钻头冠部形状及不同的布齿密度和切削齿在不同的磨损状态下对PDC钻头切削齿受力的影响进行了分析;用相邻的3个切削齿之间的关系(不同的切削齿与切削齿之间的径向距离和切削齿之间的高度差)来分析PDC钻头冠部形状和切削齿布齿密度对切削齿受力的影响,以及将切削齿的磨损状态简化成与切削齿在钻头上装配方向垂直的平面来分析切削齿磨损状态对切削齿受力的影响。
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Then, we design a disturbance observer and adaptive control in the acceleration feedback loop to compensate the influence of disturbance and estimate the variation of inertia and viscous damping constant respectively.
并且希望内回路干扰影响与J、B变动影响尽可能降低,故在加速度内回路设计干扰估测器与适应性控制,使得外部位置回路不受干扰与J、B变动影响,提高系统之精度。
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In others with double-armed receptors, the probes 4-(N,N-bisacetoxyethylaminomethyl)-7-methoxycoumarin.(B3) and 4-N,N- bis(diethylaminodithiocarboxyethyl aminomethyl-7-methoxycoumarin (B4) with pronounced fluorescence enhancement response to special heavy and transition metal ions were proposed as PET mechanism; for those with double-armed receptors following ICT mechanism, their performances are influenced by not only the structure of the receptors but also the attaching position of it.
双臂香豆素类荧光分子探针体系中,我们研究了含有不同杂原子的识别基团对PET型荧光探针识别性能的影响,优化了探针的选择性,得到了可以选择性识别某种过渡金属和重金属离子的荧光增强型分子探针4--7-甲氧基香豆素(B3)和4--7-甲氧基香豆素B4而在ICT型荧光探针的研究中,我们发现具有不同杂原子的识别基团可以对识别性能产生影响的同时,连接位置的改变也对识别能力有很大的影响。
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Result shown: value of fractal dimension is a comprehensive index, which reflect the changes of landscape, patch areas, patch numbers, area per patch, and their interaction. And the index can reflect the irregular degree and the complex degree of landscape patch in dumping place. The fractal dimension of mixed vegetation of arbors – shrubs and mixed vegetation of shrubs maintain the high level, while fractal dimension of new reclamation land and grass land are low. The difference of other type landscape fractal dimension is not significant. Vegetation landscape is influenced by many kinds of factors. It is primarily influenced by surface material composition and terrain in south and west dumping place, which diversity index is high. It is primarily influenced by vegetation type in inner dumping place and expanded west dumping place. The landscape multiplicity index of the mixed vegetation of grass and shrubs is higher than other landscape type, but landscape dominance index of this area maintains on the lower level.
结果表明:分维数的大小反映了景观斑块面积、斑块数量和平均斑块面积等因素的相互作用,反映了排土场内景观斑块的不规则程度和复杂程度;乔灌混交地和灌木混交地保持着较高的分维数,新造复垦地和草地的分维数较低,其它景观类型的分维数则差别不大;植被景观受多种因子的影响,在南排土场、西排土场受地表物质组成和地形的影响为主,其多样性指数较高,在内排土场、西排扩大区受植被类型的影响为主;草灌混交地的景观多样性远高于其它现有的复垦植被区,但其景观优势度则保持在较低水平上。
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The research presented here is aimed at exploring the effect of DTT on the in vitro fibril formation of hen egg-white lysozymes with four disulfide bonds. In this work, we specifically addressed the effect of DTT concentration under different incubation temperatures on the hen lysozyme structure and fibril formation, the effect of addition of DTT at later time points on the amyloid fibrillization of hen lysozymes, and the effect of concentration ratio between reduced and oxidized forms of DTT on the fibril formation of lysozymes.
本研究以具有四对双硫键的母鸡蛋白溶菌酶为蛋白质模式系统,在含盐类之酸性溶液环境下诱导生成类淀粉纤维,再配合二硫代苏糖醇破坏溶菌酶中的双硫键,探讨:(1)不同温度下加入不同DTT浓度对溶菌酶类淀粉纤维形成之影响,(2)不同生长时期加入DTT对溶菌酶类淀粉纤维形成之影响,(3)不同比例之DTT和氧化态DTT浓度对溶菌酶类淀粉纤维形成之影响。
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Displacement of wall reduced with increasing of supporting severity, until it reaches the critical valuation.(4) Severity of enclosure wall. With wall thickness increasing, the flexural torque of wall increase, but the body deform are reduced. However, we should consider the economic factor when we use the method which use increase the wall severity to reduce its displacement.
支撑刚度的影响,支撑刚度增大时,墙顶位移减小,直到增加到临界值后影响变小(4)围护墙刚度的影响,围护墙厚度增加,墙身变形就相应减小,围护墙弯矩也进一步增加,但是利用增大围护墙刚度来减小变形时应结合经济因素一同考虑。
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Then, the paper applies an equal-weighted method in calculating the score which it separates into three levels : the "Bad," the "Fair," and the "Good" and the three corporate governance levels are coded as 0, 1, and 2 respectively. Finally, an ordered probit model is used to analyze significance of possible factors affecting the corporate governance level. The paper empirically reveals that a company's characteristics before the release might have significant influences on the probability of its choice on realizing corporate governance after the release.
首先,本文以「上市上柜公司治理实务守则」作为台湾公司治理实施绩效的评鉴依据,采用检核表方法,搭配权数相等的模式,针对2005年五月份台湾五十指数成分股企业予以评鉴,简单加总后将绩效分数依其大小区分为「0:待改善」、「1:普通」及「2:良好」三类,作为企业公司治理实施绩效水准值;其次,本文采用顺序多重分类模型分析公司治理实施绩效的影响因素,了解实务守则发布前的企业股票流动性、股权集中度、营运资讯取得成本、介入控管利益及董事会规模是否会影响实务守则发布后公司治理的实施绩效,并透过边际效果分析了解其影响方向与程度。
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This problem is also important and valuable in Nonlinear Optics. It will be very helpful to understand how the aberrations affect the course of three- wave mixing, such as the change of conversion efficiency, the distribution of intensity and phase.Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental waves aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.
首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解;通过建立国防科学技术人学研究生院学位论文三维数值模型,编写相应仿真程序,首次得到了位相畸变光束倍频过程的大量计算结果,深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素;得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同,但谐波的远场发散角明显地比相应基波的小的结论;得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下,位相畸变传递到二次谐波的估算式;举例分析了KDP三倍频方案中,基波位相畸变对二次谐波和三次谐波的影响;实验工作中,用哈特曼一夏克传感器分别对IO64nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量,给出了相应结果。
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Small signal solution of aberrated second harmonic generation is deduced from three-dimension three wave coupling functions. The numerical work gives out lot of results of different aberrations. The effects of the fundamental wave's aberrations, which will change the conversion efficiency, distribution of intensity and phase in the frequency conversion, is analyzed. It shows that when walk-off and diffraction effects could be ignored approximately estimation of the phase distribution of second-harmonic wave could be done. The far field divergent angle and second moment radius of harmonic wave will vary with the aberration of fundamental wave, but the far field divergent angle will be obviously smaller than that of fundamental wave. The phase distribution of both fundamental and harmonic wave is measured using Hartmann-Shack wave front sensor in the experiment with 1064nm and 790nm lasers, respectively. Results are given.
首次从三维三波相互作用方程组推导得到了位相畸变光束倍频的小信号解;通过建立三维数值模型,编写相应仿真程序,首次得到了位相畸变光束倍频过程的大量计算结果,深入细致地研究了位相畸变光束经非线性光学频率变换后谐波的转换效率、光强分布、位相分布以及影响它们的各种因素;得出谐波的远场发散角和光斑二阶矩的变化规律会因为基波像差的不同而不同,但谐波的远场发散角明显地比相应基波的小的结论;得到了在走离效应和衍射效应等影响许多因素可以忽略的情况下,位相畸变传递到二次谐波的估算式;举例分析了KDP三倍频方案中,基波位相畸变对二次谐波和三次谐波的影响;实验工作中,用哈特曼-夏克传感器分别对1064nm倍频过程和790飞秒超短脉冲倍频过程中的基波和谐波的位相分布进行了测量,给出了相应结果。
- 推荐网络例句
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With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.
随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。
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But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.
不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。
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Closes the eye, the deep breathing, all no longer are the dreams as if......
关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。