Hongjun Liu

Vanderbilt University

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De‐en Jiang

Vanderbilt University

Sheng Dai

Oak Ridge National Laboratory

Stephen J. Paddison

University of Tennessee at Knoxville

Sanat K. Kumar

Columbia University

Choon‐Hong Tan

Nanyang Technological University

Shannon M. Mahurin

Oak Ridge National Laboratory

Shuguang Guan

East China Normal University

Ming Lei

Southwest Jiaotong University

Liqi Qiu

University of Tennessee at Knoxville

Danfeng Jiang

Jiangsu University of Science and Technology

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Chinese Academy of Sciences

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University of Chinese Academy of Sciences

Huazhong University of Science and Technology

Ocean University of China

Zhejiang University

Peking University

Shanghai Jiao Tong University

Oak Ridge National Laboratory

Sichuan University

University of Tennessee at Knoxville

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Clinical Study on Liquid Resuscitation of the Early Stage of Traumatic Shock with Shenmai Injection

Journal of Emergency in Traditional Chinese Medicine (2007)

Hongjun Liu

Objective:To explore the effects of Shenmai Injection on the early stage of traumatic shock.Methods:The traumatic shock patients in early stages were divided into two groups randomly.The common treatment measures are same in the two groups.The cases in the treatment group were treated with Shenmai Injection 30ml(injected into vein)at first,then,give 20ml dropped into vein q8h and other treatment measures were as same as the control group cases.The blood pressure,heart rate,volume of urine,NSPO2,hemorheological changes,AST,LDH,LAT,NO and VEGF were detected.Results:One hour after injection,the blood pressure of the treatment group became significantly higher than that of the control group.Half hour after injection,the heart rate of experimental group decreased significantly than that of control group.NSPO2 in experimental group was improved obviously compared with that of the control group.Two hours after injection,the urinary volume increased significantly than that of the control group.AST,LDH,LAT,NO and VEGF in two groups were dropped after resuscitation of the traumatic shock,but the changes of the treatment group were more obviously.Conclusion:Shenmai injection is a supplementary drug to treat traumatic shock safely and effectively.It can improve traumatic shock in many segments and restrain the development of traumatic shock,especially it can be used in the limited liquid resuscitation of the early stage of traumatic shock.

Traumatic Shock

Mean arterial pressure

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Toughness testing methods for conventional abrasive grains and their error analysis

Hongjun Liu

The toughness measured by ball mill method is an important technical parameter for abrasive.It is related not only to granulating the preparation method,particle shape,surface,crystallization,but also to the chemical composition of abrasives.Due to different national conditions,different countries and regions have different methods and standards for testing the toughness of abrasive grains.In this research work,a comparative analysis for these differences was made.Some factors that influence the uncertainty of test results were analyzed.By analyzing the mathematical statistics of the experimental data,the uncertainty of the experimental method and devices can be determined.

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The Carbon Challenge: Design, Synthesis, and Chemisorption Behavior of Solid Sorbents in Direct Air Capture of Carbon Dioxide

Materials Today Energy (2024)

Liqi Qiu Narges Mokhtari‐Nori Hongjun Liu De‐en Jiang Zhenzhen Yang

Chemisorption

Carbon fibers

10.1016/j.mtener.2024.101740

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Mesoscale Simulations of Anion Exchange Membranes Based on Quaternary Ammonium Tethered Triblock Copolymers

Macromolecules (2017)

Fatemeh Sepehr Hongjun Liu Xubo Luo Chulsung Bae Mark E. Tuckerman

The hydrated morphology of either proton exchange membranes (PEMs) or anion exchange membranes (AEMs) determines many aspects of species transport. The present work seeks to understand the morphology and microstructure of a triblock copolymer, polystyrene-b-poly(ethylene-co-butylene)-b-polystyrene (SEBS), functionalized with alkyl-substituted quaternary ammonium groups. Mesoscale dissipative particle dynamics (DPD) simulations were utilized and parametrized by reproducing the experimental morphology of the SEBS copolymer. It was found that the AEM (i.e., quaternary ammonium-functionalized SEBS) phase separates into a functionalized polystyrene-rich phase that is hydrophilic and a hydrophobic phase consisting of the SEBS mid-blocks. The morphology was controlled by the water content and was transformed from perforated and interconnected lamellae to perfect lamellae and then to disordered bicontinuous domains by increasing the hydration level (λ = H2O/functional head group) from 4 to 20. The hydrophilic phase swelled upon the hydration of the membrane consistent with AFM phase imaging of a similar SEBS-based ionomer. Domains exclusively consisting of water were formed at high levels of hydration (λ = 16 and 20) within the hydrophilic phase. Changing the anion from OH– to Cl– resulted in larger water domains at the highest hydration levels.

Dissipative particle dynamics

Polystyrene

Ionomer

Morphology

10.1021/acs.macromol.7b00082

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Solubility of Gases in a Common Ionic Liquid from Molecular Dynamics Based Free Energy Calculations

The Journal of Physical Chemistry B (2014)

Hongjun Liu Sheng Dai De‐en Jiang

Solubility of eight common gases in the 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, [emim][Tf2N], ionic liquid was systematically investigated based on alchemical free energy calculations from molecular dynamics simulations. The simulated solubilities and trend in terms of Henry's law constants agree qualitatively with the experiment. Polar gases such as H2S and nonpolar gases with a large quadrupole moment such as CO2 show the highest solubility, while nonpolar gases of small quadrupole moments (such as N2 and H2) are least soluble. The solute-ionic liquid interaction correlates with the observed solubility order. We also examined the temperature dependence of solubility for CO2 and N2 and found that the CO2 solvation in IL is exothermic with a negative solvation enthalpy, while the N2 solvation is endothermic, in agreement with the experiment.

Dynamics

10.1021/jp500137u

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Dynamic Monkey Bar Mechanism of Superionic Li‐ion Transport in LiTaCl₆

Angewandte Chemie International Edition (2023)

Ming Lei Bo Li Hongjun Liu De‐en Jiang

Abstract The LiTaCl 6 solid electrolyte has the lowest activation energy of ionic conduction at ambient conditions (0.165 eV), with a record high ionic conductivity for a ternary compound (11 mS cm −1 ). However, the mechanism has been unclear. We train machine‐learning force fields (MLFF) on ab initio molecular dynamics (AIMD) data on‐the‐fly and perform MLFF MD simulations of AIMD quality up to the nanosecond scale at the experimental temperatures, which allows us to predict accurate activation energy for Li‐ion diffusion (at 0.164 eV). Detailed analyses of trajectories and vibrational density of states show that the large‐amplitude vibrations of Cl − ions in TaCl 6 − enable the fast Li‐ion transport by allowing dynamic breaking and reforming of Li−Cl bonds across the space in between the TaCl 6 − octahedra. We term this process the dynamic‐monkey‐bar mechanism of superionic Li + transport which could aid the development of new solid electrolytes for all‐solid‐state lithium batteries.

Bar (unit)

10.1002/anie.202315628

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Excess entropy and structural transitions in a two-dimensional square-shoulder fluid

The Journal of Chemical Physics (2010)

Murari Singh Hongjun Liu Sanat K. Kumar Abir Ganguly Charusita Chakravarty

Metropolis Monte Carlo simulations on the square-shoulder fluid of Malescio and Pellicane are used to trace the temperature dependent excess entropy, the heat capacity, and configurational energy along several isochores, including those for which mechanically stable zero-temperature structures have been predicted. Thermodynamic signatures of structural phase transitions are identified along several isochores, in addition to the low-density triangular solid and stripe phase transitions identified earlier. The finite temperature phases illustrate the competition between cluster formation and stripe formation as competing mechanisms for generating minimum free energy configurations as a function of density, consistent with earlier results at zero temperature. We also critically examine the usefulness of a phase-ordering rule based on the residual multiparticle entropy (RMPE) in predicting the formation of this diverse set of ordered structures from a disordered fluid phase. For the majority of the isochores studied, the RMPE prediction and the thermodynamic evidence for a phase transition were consistent. However, this criterion fails along isochores that are in regions of coexistence. Thus, the zero-RMPE rule is only likely to be approximately predictive in systems with small phase coexistence regimes, e.g., in the case of liquid crystal forming systems.

Thermodynamic integration

10.1063/1.3314288

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Growth and morphology of albino and normal F2 juveniles from different families of turbot Scophthalmus maximus

Journal of Fishery Sciences of China (2013)

Jian Guan Yongyun ZHENG Hongjun Liu Shuguang Guan Quanqi Zhang

Scophthalmus

Morphology

10.3724/sp.j.1118.2011.01286

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A Two-stage Surgery for Completely Degloving Injury of Multiple Fingers: a Retrospective Cohort Study

Journal of Hand and Microsurgery (2024)

Hongjun Liu Tao Guo Bin Wang Fan Wu Wenzhong Zhang

The completely degloving injury of multiple fingers is a challenging clinical problem. Based on our technical experience, a novel two-stage surgery of abdominal hypodermal pocket followed by separation and full thickness skin grafting was conducted.

Degloving

10.1016/j.jham.2024.100151

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Removal of Anionic Surfactants in Wastewater by Membrane Bioreactor

Environmental Science and Management (2006)

Hongjun Liu

Anionic surfactant is a kind of most familiar and representational organic contaminations in environment. Using separation membrane bioreactor(MBR)can achieve effective removal of anionic surfactants in simulant wastewater, the result demonstrated that the removal efficiency exceeded 90% . Several factors influencing anionic surfactants biodegradation were investigated, the optimum conditions were confirmed; flux of gas =0. 3m /h, the activated sludge concentration = 6948mg/L. Tests were carried out to study the anionic surfactants removal approaches of MBR, it is concluded that biological effects play a major role in anionic surfactants removal by MBR. Meanwhile, biodegradation kinetics of anionic surfactants was analyzed, it is found that biodegradation of anionic surfactants follows first-order dynamics.

Membrane bioreactor

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