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大庆减压渣油加氢裂化水溶性催化剂分散性研究

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石油与天然气化工 2008年第6期37卷 480-482页

作者：张磊阙国和中国石油大学重质油加工国家重点实验室

采用不同的分散方式及分散方法,考察了大庆减压渣油加氢裂化水溶性催化剂的分散效果。建立了分散性能参数来评价水溶性催化剂在渣油中分散效果的优劣。实验结果表明:水溶性催化剂的催化活性随其分散度的增加而增大,分散度增加,颗粒度减... 详细信息

采用不同的分散方式及分散方法,考察了大庆减压渣油加氢裂化水溶性催化剂的分散效果。建立了分散性能参数来评价水溶性催化剂在渣油中分散效果的优劣。实验结果表明:水溶性催化剂的催化活性随其分散度的增加而增大,分散度增加,颗粒度减小,比表面积增大,因此活性增加。分散方式和分散方法对加氢裂化的影响很大,而分散时间和速度超过一定的值后对催化剂的分散效果影响不大。研究发现,分散性能参数与渣油加氢裂化结果存在相关性。

关键词：渣油加氢裂化水溶性催化剂分散性分散参数

Bright Solitons on Continuous Wave Background in Blood Vessels

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Communications in Theoretical Physics 2014年第3期61卷 334-338页

作者：项佳杰蒋华杰戴朝卿王悦悦 School of Sciences Zhejiang A&F University

The nonlinear Schr¨odinger equation(NLSE) with variable coefficients in blood vessels is discussed via an NLSE-based constructive method, and exact solutions are obtained including multi-soliton solutions with and without continuous wave backgrounds. The dynamical behaviors of these soliton solutions are studied. The solitonic propagation behaviors such as restraint and sustainment on continuous wave background are discussed by altering the value of dispersion parameter δ. Moreover, the longitude controllable behaviors are also reported by modulating the dispersion parameter δ. These results are potentially useful for future experiments in various blood vessels.

关键词：连续波亮孤子血管动力学行为 NLSE 多孤子解分散参数变系数

Interference of Two-Component Bose-Einstein Condensates with a Coupling Drive in Presence of Dissipation

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Communications in Theoretical Physics 2005年第3X期44卷 532-536页

作者： YU Zhao-Xian WANG Ji-Suo JIAO Zhi-Yong Beijing Information Technology Institute Beijing 100101 China Department of Physics Liaocheng University Liaocheng 252059 China Department of Applied Physics University of Petroleum (East China) Dongying 257061 China

The interference of the two-component Bose-Einstein condensates with a coupling drive in the presence of the dissipation is studied. We find that when the two-component Bose-Einstein condensates are initially in the coherent states, for the smaller dissipation parameters compared with that of the rf frequency ωrf, the interference intensity exhibits damply oscillation behavior, whereas when the dissipation parameters are larger than that of the ωrf, the interference intensity exhibits a fast attenuation behavior. As a comparison, the interference intensity in the absence of the dissipation is also studied. We conclude that the dissipation of the system can be evaluated by selecting the ωrf experimentally.

关键词： Bose-Einstein冷凝物干涉连接性分散参数振动

Double Wronskian Solutions for a Generalized Nonautonomous Nonlinear Equation in a Nonlinear Inhomogeneous Fiber

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Communications in Theoretical Physics 2018年第9期69卷 249-254页

作者：解西阳蒙高庆 Department of Mathematics and Physics North China Electric Power University

A generalized nonautonomous nonlinear equation, which describes the ultrashort optical pulse propagating in a nonlinear inhomogeneous fiber, is investigated. N-soliton solutions for such an equation are constructed and verified with the Wronskian technique. Collisions among the three solitons are discussed and illustrated, and effects of the coefficientsσ1(x, t),σ2(x, t),σ3(x, t) and v(x, t) on the collisions are graphically analyzed, whereσ1(x, t),σ2(x, t),σ3(x, t) and v(x, t) are the first-, second-, third-order dispersion parameters and an inhomogeneous parameter related to the phase modulation and gain(loss), respectively. The head-on collisions among the three solitons are observed, where the collisions are elastc. Whenσ1(x, t) is chosen as the function of x, amplitudes of the solitons do not alter, but the speed of one of the solitons changes.σ2(x, t) is found to affect the amplitudes and speeds of the two of the solitons. It reveals that the collision features of the solitons alter withσ3(x, t)=-1.8x. Additionally, traveling directions of the three solitons are observed to be parallel when we change the value of v(x, t).

关键词：非线性同类方程纤维分散参数振幅和碰撞超短波

分数几何对称模型理论分析多孔固体催化剂颗粒中的一级等温串连扩散反应(英文)

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内蒙古师范大学学报（自然科学汉文版） 2003年第1期32卷 40-45页

作者：段毅文内蒙古师范大学化学系内蒙古呼和浩特010022

在多孔固体催化剂颗粒中的串连扩散反应是非常重要的一类化学反应 ,如水解反应 ,卤化反应和氧化反应等 .分数几何对称模型已用于分析这类反应的一般规律 .为了得到多孔固体催化剂颗粒内非均相催化反应的各因素 ,这个模型将拓宽单颗粒化... 详细信息

在多孔固体催化剂颗粒中的串连扩散反应是非常重要的一类化学反应 ,如水解反应 ,卤化反应和氧化反应等 .分数几何对称模型已用于分析这类反应的一般规律 .为了得到多孔固体催化剂颗粒内非均相催化反应的各因素 ,这个模型将拓宽单颗粒化学反应工程的认识领域 .而且 ,在多孔固体催化剂颗粒填充床中分数参数m和实验数据间的关系Dui=φ2 im +1也已推得 .

关键词：多孔固体催化剂颗粒等距扩散催化反应分数几何对称模型一级等温串连扩散反应化学反应分散参数