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Second, transient flow for vertical well and fractural well in porous media with arealanisotropy has been researched in this paper. The analytic solution for vertical well andsemi-analytic solution for vertical fractural well is developed by using image inversion,superposition principle, Laplace transformation, Fourier transformation, as well as theirinverse transforms, and storage and skin are taken into account. For vertical fractural well,influence of pressure and productivity is studied when the orientation of artificial fractureisn't in accordance with the direction of major permeability, it is fundamental to evaluatepotential and analyze well test data.
文中研究了平面各向异性储层不定常渗流问题,建立了平面各向异性储层交叉直线边界中一口直井渗流的数学模型,利用镜像反演、Laplace变换、Fouier变换及其反变换推导了不同边界条件下直井的Laplace空间解析解,考虑井储和表皮的影响,分析了曲线特征及影响因素的敏感性曲线;并运用影响椭圆及Duhamel叠加原理,推导了平面各向异性储层中垂直裂缝井的压力分布方程,考虑了水力裂缝与主渗透率轴成一定角度对压力及产能的影响,为垂直裂缝井的产能评价及试井分析提供依据。
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In the ***, all types and fundamental principles of Radon transform are summarized systematacially. This *** starts from the general linear Radon transform, and then researches how to use the damped least square method to find the solution of the forward transform. However, the least squares smoothing effect will lead to a certain degree of trails in the data of Radon domain, which led to the application\'s limitations. After that the implementation in Radon domain and relative merits of linear Radon transform, parabolic Radon transform and polynomial Radon transform which have time invariance are introduced, the conjugate gradient method that can solve numerical solution is also given. And then the high resolution Randon transform is discussed, it introduces the regularization theory and Bayes principle into inversion, which successfully remove the negative affect caused by discrete Radon transform. Finally, we introduce the optimal weighting similar coefficient Radon transform, which adapt to the time variant quality of hyperbolic Radon transform.
本文系统总结了Radon变换的各种类型及其基本原理,从τ- p变换(即一般线性Radon变换)出发,研究利用阻尼最小二乘平方法求解其正变换,但是最小平方法的平滑作用会导致Radon域数据存在一定程度的拖尾效应,给这种方法的应用带来了很大的局限性;然后先容了具有时不变性的线性、抛物和多项式Radon变换在频率域的实现及其优缺点,给出了求解其数值解的共轭梯度算法;接着讨论了高分辨率Radon变换,它把正则化思想和贝叶斯原理引进到了反演中,很好的克服了离散Radon变换产生的截断效应对结果的不利影响;最后先容了适应双曲Radon变换时变性质的高分辨率最优相似系数加权Radon变换。
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Using Agilent 8453 ultraviolet-visible spectrophotometer, the affecting factors were studied on the kinetic processes in iodometry involved in the volatilization of iodine and the oxidation of iodide ion by dissolved oxygen, in particular such as the shape of the vessel, the volume of the solution tested, the concentration of KI and the temperature and the acidity of tested solution.
利用紫外-可见分光光度仪测量了I2挥发、I在酸性介质中被溶解氧氧化的动力学过程,着重研究了容器形状、溶液体积、KI浓度、温度等因素对I2挥发速率的影响以及溶液酸度与I氧化反应速率的关系。
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Results show that 4-oxo-β-ionone is the major product with yield of 53.5% under the conditions as follows: reaction temperature 45℃, reaction time 24 h, the molar ratio of n: n(NaClO3): n 20: 100: 3, and pH value of solution in 1-3; on the other hand, 5,6-epoxy-β-ionone is major product with yield of 25.4% when reaction temperature is 40℃, reaction time is 24 h, the molar ratio of n: n(NaClO3): n is 20: 120: 5, and pH values of solution is 3. The excessive β-ionone can be recovered by vacuum distillation for reusing again. 4-oxo-β-ionone and 5,6-epoxy-3-ionone were purified by recrystallization and silica gel column chromatograph respectively with the purity over 98%.
研究结果表明:氯酸钠氧化β-紫罗兰酮的反应主要生成4-氧代-β-紫罗兰酮和5,6-环氧-β-紫罗兰酮,经重结晶和硅胶柱层析分离,纯度高于98%;4-氧代-β-紫罗兰酮的有利合成条件是反应温度为45℃,反应时间为24h,溶液的pH值为1~3,反应物配比n:n(NaClO3):n为20:100:3,最佳收率为53.5%;5,6-环氧-β-紫罗兰酮有利的合成条件是反应温度为40℃,反应时间为24h,溶液的pH值为3,反应物配比n:n(NaClO3):n为20:120:5,其收率为25.4%;未反应的β-紫罗兰酮经减压蒸馏回收后可重复使用。
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If the nutrient solution with the isochronous absorption of water and nutrients is selected, the supplement of water every 1 to 2 days must be added as nutrient solution.
如选用水肥同步吸收的配方,每隔1~2天补充水分时就以营养液的形式加入即可。
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Systematic isopiestic measurements have been carried out at the temperature 298.15K for the mixed nonelectrolyte aqueous solution saturated with an electrolyte {water (A1)+cadmium chloride〓(A2)+sorbitol +sucrose} and the mixed electrolyte aqueous solution saturated with another electrolyte {water (A1)+barium chloride〓(A2)+sodium chloride +ammonium chloride}, taking sodium chloride or calcium chloride as the reference standard.
以NaCl或CaCl〓为参考物,系统地测定了298.15K时一种电解质饱和的混合非电解质溶液{H〓O(A1)+CdCl〓(A2)+山梨醇+蔗糖}和一种电解质饱和的混合电解质溶液{H〓O(A1)+BaCl〓(A2)+NaCl+NH〓Cl}的等压平衡。
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Numerical solution of the model is maed by using Monte-Carlo sampling method.Its solution is astochastic field. It is showed by a real case that the model can describe the main trend and changing range ofpollutant'sconcentration at any calculating point,and the probability is added to the isopleth of the pollutant'sconcentration.
该随机模型的解是一个随机场,实例计算表明,它的解能够反映任一计算点的浓度变化趋势及范围,并能够给程度等值线附加上概率的意义,表现了在不确定因素的影响下,污染带随机变化的情况。
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In mechanics kinematics, Jacobin matrix may be calculated and simplified by vector constructing; Inverse solution and its restricting condition be given; Forward solution be solved by new-raphson method. The method need shorter time than optimization and has a lot of advantages in applying program; some relationship of velocity, acceleration, force and error of mapping from input to output have been given. Analyzing of theory base these researches.
在机构运动学研究方面,通过矢量构造的方式计算出了速度雅克比矩阵,简化了计算量;给出了机构位置逆解的计算过程及约束条件;利用Newton—Raphson法计算出了机构位置的正解,该算法比优化法计算时间短,而且利于实际编程;给出了机构输入、输出端速度、力、误差的映射关系,这些研究是机构理论分析的基础。
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Based on the speciality of the spectral function, we provide the sufficient conditions such that the spectral function are K—increasing (strictly K—increasing) in Euclidean Jordan algebra, and establish the relationship between the spectral scalar solution set and the K— efficient solution set of the Euclidean Jordan algebra vector optimization problem.
基于谱函数的特殊性,刻画了谱标量函数满足K-增性的充分条件,继而建立了谱标量解集与欧几里德若当代数向量优化问题K-弱有效解集和K-有效解集的包含关系。
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Meanwhile, the relationship between the trace scalar solution set and the Bo properly K—efficient solution set of the Euclidean Jordan algebra vector optimization problem is es- tablished.
同时,还建立了特殊谱标量解集——迹谱标量解集与Bo恰当K-有效解集的包含关系。
- 相关中文对照歌词
- Solution Devices
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- Before The Solution
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- The Ocean Is The Ultimate Solution
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- 推荐网络例句
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Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).
呼气,收缩臀部肌肉;拱起身体,尽量抬起头来,右腿伸直朝向天花板(膝微屈,以避免肌肉紧张)。
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The cost of moving grain food products was unchanged from May, but year over year are up 8%.
粮食产品的运输费用与5月份相比没有变化,但却比去年同期高8%。
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However, to get a true quote, you will need to provide detailed personal and financial information.
然而,要让一个真正的引用,你需要提供详细的个人和财务信息。