Huaqing Liang

China University of Petroleum, Beijing

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Fangming Zhu

Suzhou University of Science and Technology

Guodong Liang

Sun Yat-sen University

YongJiang Long

Sun Yat-sen University

Qihua Zhou

Hefei Normal University

Meiyi Qing

Chongqing University of Science and Technology

Jinjun Zhang

China University of Petroleum, Beijing

Yuqiong Zhu

Bengbu Medical College

WanChu Wei

Sun Yat-sen University

Honglei Zhan

China University of Petroleum, Beijing

Haiyang Gao

Sun Yat-sen University

Cooperative Institutions

China University of Petroleum, Beijing

Sun Yat-sen University

Chinese Academy of Sciences

China National Petroleum and Chemical Planning Institute

Fudan University

Tsinghua University

Huazhong University of Science and Technology

Northwestern Polytechnical University

China University of Petroleum, East China

University of Calgary

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The mechanism of detecting water content in oil-water emulsions using impedance spectroscopy

Journal of Petroleum Science and Engineering (2019)

Meiyi Qing Huaqing Liang Jinjun Zhang Honglei Zhan

10.1016/j.petrol.2019.106863

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Citations (10)

Crystallization-driven self-assembly of isotactic polystyrene in N, N-dimethylformamide

Chinese Journal of Polymer Science (2015)

Qihua Zhou ZhiYun Li Huaqing Liang YongJiang Long Qing Wu

Tacticity

Polystyrene

Dimethyl formamide

Morphology

10.1007/s10118-015-1615-1

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Citations (7)

Synthesis of isotactic polystyrene-block-polyethylene by the combination of sequential monomer addition and hydrogenation of 1,4-trans-polybutadiene block

Chinese Journal of Polymer Science (2017)

Huaqing Liang Qihua Zhou YongJiang Long WanChu Wei Guodong Liang

Polystyrene

Tacticity

10.1007/s10118-017-1933-6

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Citations (3)

Applying a 532 nm Laser to Reduce the Viscosity of Crude Oil

Energy & Fuels (2020)

Shanzhe Zhang Xinyang Miao Peng Xue Wanting Lu Xuecong Liu

Reducing the viscosity of heavy oil is of great significance in petroleum production and transportation. In this paper, we studied the reduction of viscosity of crude oil under the irradiation of a 532 nm laser in which the variation of current, temperature, and viscosity was also studied and discussed. Owing to the photolysis-product absorption and order-n multiphoton absorption, both the current and temperature increased over time with the laser turned on, simultaneously, leading to the breakage of chemical bonds and the drop in viscosity. With its advantage of rapidness, collimation, and no contact, laser technology may serve as a powerful tool to reduce the viscosity of crude oil.

Flash photolysis

Breakage

10.1021/acs.energyfuels.0c01643

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Citations (5)

CCDC 1921379: Experimental Crystal Structure Determination

The Cambridge Structural Database (2019)

Sihan Li Yuqiong Zhu Huaqing Liang Xiu-li Xie Yipeng Zhan

10.5517/ccdc.csd.cc22hbzx

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Citations (0)

Adaptive Noise Cancellation Method for Continuous Wave Mud Channel of MWD

2022 IEEE 17th International Conference on Control & Automation (ICCA) (2020)

Yan Xiao-Ping Lulu Chen Meiyi Qing Xinyu Dou Huaqing Liang

Continuous wave (CW) mud pulse telemetry technology has high-speed real-time data transmission that is widely used in real-time drilling and logging data measurements. It is important to effectively eliminate the strong pump noise with frequency-variant in the mud channel and extract the extremely weak signal which carries downhole information. In this paper, an adaptive noise cancellation (ANC) system for mud channel signal processing is designed based on main and auxiliary dual sensors. In addition, an improved variable step-size adaptive iteration algorithm is proposed with a faster convergence rate. This algorithm can dynamically optimize the noise cancellation output of the mud channel by adjusting the step size according to the correlation between noise and signal. The simulation experiment results show that the proposed system successfully extracts weak signals in strong pump noise conditions with a faster convergence rate.

Active Noise Control

SIGNAL (programming language)

10.1109/icca51439.2020.9264449

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Citations (5)

［OSSO］-type bis (phenolate) titanium complex for ethylene polymerization supported by MgCl2/AlEtn(OEt)3-n

Acta Scientiarum Naturalium Universitatis Sunyatseni (2017)

YongJiang Long Huaqing Liang Qihua Zhou WanChu Wei Fangming Zhu

Source

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Synthesis and characterization of isotactic poly(p-hydroxystyrene)- block-1,4-trans-polybutadiene by sequential monomer addition using titanium complex with an [OSSO]-type Bis(phenolate) ligand

Journal of Polymer Research (2018)

Huaqing Liang Sihan Li Dong Liu Yijun Liu YongJiang Long

Methylaluminoxane

Tacticity

Gel permeation chromatography

Molar mass distribution

10.1007/s10965-018-1675-3

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Citations (1)

The influences of electronic effect and isomerization of salalen titanium(iv) complexes on ethylene polymerization in the presence of methylaluminoxane

RSC Advances (2019)

Sihan Li Yuqiong Zhu Huaqing Liang Xiuli Xie Yipeng Zhan

Herein, two salalen titanium(iv) complexes were synthesized and characterized. These complexes coexisted as two isomers in certain conditions and underwent isomerization, as evidenced by 1H NMR spectroscopy. Furthermore, the molar ratio of the two isomers ranged from 100 : 15 at 30 °C to 100 : 34 at 120 °C, driven by thermal energy, based on variable temperature 1H NMR characterization. Both complexes were employed as catalysts for ethylene polymerization in the presence of methylaluminoxane (MAO). The influence of the electronic effects of different substituent groups at the ortho position of the phenolate on ethylene polymerization behaviors, molecular weight and molecular weight distributions of the resulting polyethylene was investigated. The fluorinated salalen titanium(iv) complex revealed relatively high catalytic activity and thermal stability owing to the electron-withdrawing inductive effect. Moreover, disentangled linear polyethylene with ultrahigh molecular weight (Mw up to 3000 kDa) and narrow molecular weight distribution (Mw/Mn ∼ 2) was obtained in the polymerization temperature range of 30 °C to 50 °C.

Methylaluminoxane

Molar mass distribution

Coordination polymerization

Molar mass

Linear low-density polyethylene

10.1039/c9ra08899g

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Citations (7)

Investigation on Viscoelasticity of Waterborne Polyurethane with Azobenzene-containing Pendant Groups under Ultraviolet and Visible-light Irradiation

Chinese Journal of Polymer Science (2019)

Yijun Liu Dong Liu Sihan Li Huaqing Liang Fangming Zhu

Azobenzene