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Above-water remote sensing reflectance and scattering extinction coefficients of water were derived by modeling radiative transfer across the water-air interface with in situ measured water quality data and beneath water spectral reflectance measurements in Lake Tai.

利用太湖水质参数数据、水面以下实测光谱数据以及水-气界面辐射传输模型,计算得到了水体漫射衰减系数和水面以上遥感反射比,探讨了悬浮物对水体中营养盐以及水下光照等水体环境因子的影响,在此基础上,利用水面以上遥感反射率建立了悬浮物浓度的定量反演模型。

An explicit formula for the enhancement factor in gas-liquid absorption with irreversible chemical reactions is presented.

提出气液化学吸收增大因子β的显函数式,并分别同膜理论、渗透理论模型以及可vanKrevelen—Hoftijzer隐函数式的数值解比较,证明显函数式相当逼近该二理论模型,同时在准确性和方便性方面都优于隐函数式。

By considering the trait of the artery and anabranch of the Three-Gorges reservoir and analyzing the environmental elements influencing the growth of the algae, we improved on thenutrition dynamic model of the algae"s growth, carried on computer numerical value simulating on the evolvement process of the eutrophication of the Wujiang River, the Hanjiang River and the Three Gorges reservoir by cell mapping algorithm and revealed the dynamics action and mutation forms in the process of the valleys" algae blooms and the relationship between the major elements influencing the algaes growth and the model surge function.

本文结合三峡水库干、支流水体环境特点,通过对影响流域水体藻类生长的环境因素进行分析,改进藻类生长营养动力学模型,并利用胞映射算法对乌江、汉江和库区流域富营养化演化性态进行了计算机数值模拟和仿真分析,揭示流域水华发生过程的动力学行为、混沌性态和流域水质中主要藻类生长控制因子与模型振荡函数间的关系。

(1) cerebral ischemical reperfusion injury rats'limbs motor function is variable. Acupuncture could promote lims'functional recovery.(2) PCNA masc cells is visible in cerebral ischemical semidarkness region. There is cell regeneration phenomenon. Acupuncture could strengthen injury region's PCNA expression, could profit injury recovery and functional reconstruction.(3) In ischemia semidarkness region for the model group and acupuncture group, PCNA masc cells percentage of 14days group is lower than 7days group. Along with the recovery of injury, cell multiplication is weaken.(4) In cerebral ischemia semidarkness region, there is VEGF masc cells and regeneration phenomenon. Acupuncture could strengthen injury region's VEGF expression, could profit protection after injury and blood vessel regenerate.(5) In ischemia semidarkness region for the model group and acupuncture group, VEGF masc cells percentage of 14days group is lower than 7days group. Along with the recovery of semidarkness region, ischemia and anoxemia state is getting improved, and VEGF is reduce.(6) As there are PCNA and VEGF masc cells in brain injured region, we could conclude that, after brain ischemical reperfusion injury, there are blood vessel regeneration phenomenon. Acupuncture could promote blood vessel regeneration, recovery blood supply sufficiently and quickly, and promote the recovery of brain injury region.(7)The VEGF masc cells percentage of inhibitor group is lower than acupuncture group. It state that the effect of acupuncture promote VEGF is partly depend on the existing of eNOS.

实验结论:(1)脑缺血再灌注损伤后大鼠的肢体运动功能发生改变,针刺可以促进肢体功能恢复;(2)脑缺损伤区可见PCNA阳性细胞,存在细胞再生现象,针刺可以增强损伤区PCNA的表达,有利于损伤的修复和功能重建;(3)针刺组和模型组14d时缺血损伤区PCNA阳性细胞百分比低于7d组,随着损伤逐渐得到修复,细胞增殖现象减弱;(4)脑缺血损伤区可见VEGF阳性细胞,存在内皮型细胞再生现象,针刺可以增强损伤区VEGF的表达,有利于脑损伤后保护和缺血区血管再生;(5)针刺组和模型组14d时缺血损伤区VEGF阳性细胞百分比低于7d组,随着缺血损伤的修复,缺血缺氧状态得到改善,产生的VEGF减少;(6)由于脑损伤区同时出现PCNA阳性细胞和VEGF阳性细胞,前者是增殖细胞的标志,后者是促进血管再生的重要因子,可以推断,脑缺血再灌注损伤后脑内存在血管再生现象,针刺可以促进损伤区的血管再生,更迅速而充分的恢复损伤区的血供,促进脑损伤区的修复;(7)抑制剂针刺组脑损伤区VEGF阳性细胞百分比与针刺组相比有不同程度的降低,说明针刺促进缺血损伤区VEGF表达部分依赖eNOS的存在。

Convert relationship of prototype robot joint angle and equivalent model joint angle is presented based on the method of kinematics inverse solution. The Jacobian algorithm of redundant robot for achieving effective joint excursion is studied, which is fit for digital calculating. The grads projection algorithm of redundant robot multi optimizing capability function's proportion factor is deduced. The issues of apery arm robot singularity and joint self-movement are researched. The simulation experiment result of apery arm joint self-movement and line movement is presented.

因为七自由度拟人手臂机器人的建模比较困难,采用了在等效模型下求解其运动学逆解的方法,给出了原机器人机构关节角与等效模型关节角之间的转换关系;提出了一种适于数值计算的有效的求解有关节偏置的冗余度机器人Jacobian的算法,并在此基础上推导了冗余度机器人多优化性能指标函数的均衡比例因子梯度投影算法;研究了拟人手臂机器人的奇异问题和关节自运动问题;给出了拟人手臂进行关节自运动和进行直线轨迹跟踪的仿真实验结果。

Prove that this kind of fuzzy inference model is an universal approximator, and proposed one method identifying this fuzzy model from training data set.

提出了带概率因子的模糊推理模型,证明了该种模糊推理系统是一个通用逼近器,并给出了一种从训练数据集中辨识该模糊模型的方法。

Based on the tomato and eggplant supply data of Shanghai in sequence of year, using meteorological data in SAMR(The data management system of Shanghai Agricultural Meteorology Report) and screening the meteorological factors related to the vagetable output, the authors carried out curve fitting and estimation of related parameters of distribution function.

Gompertz曲线和对数正态分布函数(Logarithmic normal distribution function)作为这二种蔬菜上市趋势的数学模型,进行曲线拟合,先调用上海市农业科学院测试中心的SAMR农业气象资料数据库所存贮的气象数据,筛选与该蔬菜产量有密切相关的气象因子,再用多元回归方法对初选因子作进一步的筛选,从而估计出分布函数的有关参数。

The simulation points out a way for designing and manufacturing nanomaterials with totally different microstructures.2.The linear homopolymers have been added into a ABC 3-miktoarm star terpolymers system by dynamic density functional theory simulation. The areas of B phase domain and the interval between two nearest neighbour B phase domains shift with the accession of the linear polymer.3.A Petri net model was built to simulate the heat shock response in E.coli.

我们构建了大肠杆菌热休克反应的Petri网络模型,并应用化学反应动力学随机算法进行了模拟计算,观察其动力学过程,通过观测体系中平衡态下分子数目与反应速率常数间关系,总结了反应对体系平衡的影响规律,并由观测到的现象,对调控因子α的自身表达的调控机制作出推测:调控因子α的调控机制有可能是受网络控制的。4。

The results showed that the three straight lines model could fit the soil shrinking and swelling characteristic curves well. The characteristic values of the curves were smaller than 1. This indicated that during the processes of soil swelling and shrinking, the change of the soil specific volume was smaller than that of the soil water content. Values of the geometry factors of four soils studied were equal to 1 at the beginning of shrinking, less than 3 and greater than 1 at other swelling-shrinking phases. The geometry factor values in different phases showed that soil swelling-shrinking was anisotropic and only subsidence occurred at the beginning of shrinking.

结果显示:三直线模型能够很好地拟合4种土壤的收缩、膨胀过程;土壤收缩、膨胀曲线各段的特征值均小于1,这说明土壤胀缩过程中土壤容积的变化速率小于含水量的变化速率;4种土壤胀缩过程中几何因子r大于1而小于3,且收缩初期几何因子r等于1,表明土壤的胀缩是各向异性的,并且在土壤收缩的最初阶段只有垂直收缩。

Based on the crystal field theory, perturbation formulas of the spin Hamiltonian parameters g-factors (fourth-order) and the hyperfine structure constants (third-order) of 3d9 ions under tetragonal symmetry are established for the cases of small spin-orbit coupling coefficients and large spin-orbit coupling coefficients of the ligands.

本文基于晶体场理论,在较统一的理论模型和计算方法基础上运用微扰法分别对配体旋轨耦合系数较小和配体旋轨耦合系数较大的情况建立了3d9离子的自旋哈密顿参量g因子的四阶微扰公式和A因子的三阶微扰公式。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。