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New Types of Travelling Wave Solutions From （2＋l）-Dimensional Davey-Stewartson Equation

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Communications in Theoretical Physics 2006年第5X期46卷 826-832页

作者： zhao hong School of Physical Science and Information Engineering Liaocheng University Liaocheng 252059 China

In this paper, based on new auxiliary nonlinear ordinary differential equation with a sixtb-aegree nonnneal term, we study the （2＋l ）-dimensional Davey-Stewartson equation and new types of travelling wave solutions are obtained, which include new bell and kink profile solitary wave solutions, triangular periodic wave solutions, and singular solutions. The method used here can be also extended to many other nonlinear partial differential equations.

关键词： new auxiliary nonlinear ordinary differential equation (2+l)-dimensional Davey-Stewartson equation solitary wave solutions triangular periodic wave solutions

Extended Complex tanh-Function Method and Exact Solutions to （2＋1）-Dimensional Hirota Equation

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Communications in Theoretical Physics 2007年第2期47卷 200-202页

作者： zhao hong School of Physics Science and Information Engineering Liaocheng University Liaocheng 252059 China

In this paper, a new extended complex tanh-function method is presented for constructing traveling wave, non-traveling wave, and coefficient functions＇ soliton-like solutions of nonlinear equations. This method is more powerful than the complex tanh-function method [Chaos, Solitons and Fractals 20 （2004） 1037]. Abundant new solutions o[ （2q-1）-dimensional Hirota equation are obtained by using this method and symbolic computation system Maple.

关键词： nonlinear equations symbolic computation extended complex tanh-function method exact solutions

A Study for Obtaining New and More General Solutions of Special-Type Nonlinear Equation

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Communications in Theoretical Physics 2007年第6期47卷 1013-1016页

作者： zhao hong School of Physical Science and Information Engineering Liaocheng University Liaocheng 252059 China

The generalized algebraic method with symbolic computation is extended to some special-type nonlinear equations for constructing a series of new and more general travelling wave solutions in terms of special functions. Such equations cannot be directly dealt with by the method and require some kinds of pre-processing techniques. It is shown that soliton solutions and triangular periodic solutions can be established as the limits of the Jacobi doubly periodic wave solutions.

关键词： special-type nonlinear equations generalized algebraic method travelling wave solutions

Dynamic plugging regulating strategy of pipeline robot based on reinforcement learning

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Petroleum Science 2024年第1期21卷 597-608页

作者： Xing-Yuan Miao hong zhao College of Mechanical and Transportation Engineering China University of PetroleumBeijing102249China

Pipeline isolation plugging robot (PIPR) is an important tool in pipeline maintenance operation. During the plugging process, the violent vibration will occur by the flow field, which can cause serious damage to the pipeline and PIPR. In this paper, we propose a dynamic regulating strategy to reduce the plugging-induced vibration by regulating the spoiler angle and plugging velocity. Firstly, the dynamic plugging simulation and experiment are performed to study the flow field changes during dynamic plugging. And the pressure difference is proposed to evaluate the degree of flow field vibration. Secondly, the mathematical models of pressure difference with plugging states and spoiler angles are established based on the extreme learning machine (ELM) optimized by improved sparrow search algorithm (ISSA). Finally, a modified Q-learning algorithm based on simulated annealing is applied to determine the optimal strategy for the spoiler angle and plugging velocity in real time. The results show that the proposed method can reduce the plugging-induced vibration by 19.9% and 32.7% on average, compared with single-regulating methods. This study can effectively ensure the stability of the plugging process.

关键词： Pipeline isolation plugging robot Plugging-induced vibration Dynamic regulating strategy Extreme learning machine Improved sparrow search algorithm Modified Q-learning algorithm

Detection of DNA methylation by hyperbranched rolling circle amplification and DNA microarray

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Chinese Chemical Letters 2014年第12期25卷 1559-1564页

作者： hong zhao Zu-hong Lu Mianyang Normal University State Key Laboratory of Bioelectronics School of Biological Science and Medical EngineeringSoutheast University

Aberrant DNA methylation of CpG sites has been confirmed to be closely associated with *** on the hyperbranched rolling circle amplification（HRCA） and microarray techniques,a new method for qualitative detection of methylation was *** the present study,padlock probes hybridize the sample DNA at the methylation site to form a probe-DNA complex which is ligated and digested simultaneously by methylation specific *** at the methylated CpG site is the padlock probe ligated successfully to form a circle template for the HRCA *** the method of 3-dimensional polyacrylamide gel-based microarray,the HRCA product will be immobilized on the slide to form a DNA microarray,which can universally hybridize the Cy3-labeled oligonucleotide probe to detect the methylation status of CpG *** control the false positive signals,DNA ligase and temperature of ligation/digestion are *** status of four CpG sites located in P15,Ecadherin,hMLH1 and MGMT genes were analyzed successfully with this method and all the results were compatible with that of methylation-specific *** research proves that this method is simple and inexpensive,and could be applied as a high-throughput tool to qualitatively determine the methylation status of CpG sites.

关键词： Methylation Padlock probe HRCA Microarray

An automatic loading system for rock core testing with an industrial CT scanner

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Petroleum Science 2011年第4期8卷 490-493页

作者： zhao hong zhao Yixin College of Mechanical and Transpartation Engineering China University of Petroleum Beijing 102249 China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and Technology Beijing 100083 China

A new type of a loading and measuring system was developed for testing failure and deformation of rock core samples with an industrial CT （ICT） *** loading and measuring system consisted of a loading system and a computer control *** maximum servo-controlled force was 2 *** new system was a high-stiffness system with a small *** ICT tests,rock core samples could be easily loaded in the axial *** the initiation,propagation,and coalescence of cracks in core samples were observed on ICT images.

关键词： Industrial CT dynamic loading automatic loading system rock core crack propagation

Experimental Investigation of Vibration Response of A Free-Hanging Flexible Riser Induced by Internal Gas-Liquid Slug Flow

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China Ocean Engineering 2018年第6期32卷 633-645页

作者： ZHU hong-jun zhao hong-lei GAO Yue State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Southwest Petroleum University

The vibration response of a free-hanging flexible riser induced by internal gas-liquid slug flow was studied experimentally in a small-diameter tube model based on Froude number criterion. The flow regime in a curved riser model and the response displacements of the riser were simultaneously recorded by high speed cameras. The gas superficial velocity ranges from 0.1 m/s to 0.6 m/s while the liquid superficial velocity from 0.06 m/s to 0.3 m/*** slugging type 3, unstable oscillation flow and relatively stable slug flow were observed in the considered flow rates. Severe slugging type 3 characterized by premature gas penetration occurs at relatively low flow rates. Both the cycle time and slug length become shorter as the gas flow rate increases. The pressure at the riser base undergoes a longer period and larger amplitude of fluctuation as compared with the other two flow regimes. Additionally, severe slugging leads to the most vigorous in-plane vibration. However, the responses in the vertical and horizontal directions are not synchronized. The vertical vibration is dominated by the second mode while the horizontal vibration is dominated by the first mode. Similar to the vortex-induced vibration, three branches are identified as initial branch, build-up branch and descending branch for the response versus the mixture velocity of gas-liquid flow.

关键词： gas-liquid two-phase flow severe slugging liquid slug flexible riser flow-induced vibration

Treatment of manganese wastewater from titanium dioxide plant using complex phosphate

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Journal of Environmental Sciences 2000年第1期12卷 122-126页

作者： zhao, hong-Bo Third Design Institute Ministry of Chemical Industry Hefei 230024 China

The acidic wastewater containing manganese and other heavy metal ions came from the plant which produce titanium dioxide in the method of the sulfuric acid digestion was disposed under the processes of the pre\|neutralization with the mineral containing phosphorus and calcium, alkaline precipitation and re\|regulating pH with the raw wastewater. The removal ratio of manganese and ferrous were higher than 99% and 98%, respectively, when the concentration of manganese and ferrous were 46 mg/L and 2000 mg/L. More than 5800 mg/L of SO\+\{2-\}\-4 were neutralized also. The effluent pH was the range between 6 and 9, the concentration of other pollution substances were all very lower even have not discoveried.

关键词： phosphorite titanium dioxide manganese wastewater CLC number: X703 Document code: A

Transient expression of organophosphorus hydrolase to enhance the degrading activity of tomato fruit on coumaphos

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2009年第2期10卷 142-146页

作者： Jie-hong zhao De-gang zhao MOE Key Laboratory of Green Pesticide and Agricultural Bioengineering Guizhou Key Laboratory of Agricultural Bioengineering Guizhou University Guiyang 550025 China

We constructed an expression cassette of the organophosphorus pesticide degrading （opal） gene under the control of the E8 promoter. Then opd was transformed into tomato fruit using an agroinfiltration transient expression system. β-Glucuronidase （GUS） staining, reverse transcription-polymerase chain reaction （RT-PCR）, wavelength scanning, and fluorescent reaction were performed to examine the expression of the opd gene and the hydrolysis activity on coumaphos of organo- phosphorus hydrolase （OPH） in tomato fruit. The results show that the agroinfiltrated tomato fruit-expressed OPH had the maximum hydrolysis activity of about 11.59 Uhng total soluble protein. These results will allow us to focus on breeding transgenic plants that could not only enhance the degrading capability of fruit and but also hold no negative effects on pest control when spraying organophosphorus pesticides onto the seedlings in fields.

关键词： Bioremediation E8 promoter Organophosphorus hydrolase (OPH) Transient expression