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Corrosive Pseudomonas Aeruginosa Detection by Measuring Pyocyanin with a Lab-on-Fiber Optical Surface Plasmon Resonance Biosensor in Aquatic Environments

SSRN

引用

SSRN 2023年

作者： Zheng, Wanlu Ju, Chunxue Liu, Pan Li, Zhong Liu, Jidong Zhang, Yanan Zhao, Yong Gu, Tingyue Wang, Fuhui Xu, Dake Fan, Yongqiang China Northeastern University China College of Information Science and Engineering Northeastern University Shenyang110819 China Shenyang National Laboratory for Materials Science Northeastern University Shenyang110819 China College of Life and Health Sciences Northeastern University Shenyang110819 China Hebei Key Laboratory of Micro-Nano Precision Optical Sensing and Measurement Technology Qinhuangdao066004 China State Key Laboratory of Synthetical Automation for Process Industries Northeastern University Shenyang110819 China Department of Chemical and Biomolecular Engineering Institute for Corrosion and Multiphase Technology Ohio University AthensOH45701 United States

Oceanic facilities and equipment corrosion present considerable economic and safety concerns, predominantly due to microbial corrosion. Early detection of corrosive microbes is pivotal for effective monitoring and prevention. Yet, traditional detection methods often lack specificity, require extensive processing time, and yield inaccurate results. Hence, the need for an efficient real-time corrosive microbe monitoring technology is evident. Pseudomonas aeruginosa, a widely distributed microorganism in aquatic environments, utilizes its production of quinone-like compounds, specifically pyocyanin (PYO), to corrode metals. Here, we report a novel fiber optic surface plasmon resonance (SPR) sensor modified by the C-terminal of BrlR protein (BrlR-C), which is a specific receptor of PYO molecule, to detect P. aeruginosa in aquatic environments. The results showed that the sensor had a good ability to recognize PYO in the concentration range of 0-1 μg/mL, and showed excellent sensing performance in real-time monitoring the growth status of P. aeruginosa. With a strong selectivity of PYO, the sensor could clearly detect P. aeruginosa against other bacteria in seawater environment, and exhibited excellent anti-interference ability against variations in pH, temperature and pressure and other interfering substances. This study provides a useful tool for monitoring corrosive P. aeruginosa biofilm in aquatic environments, which is a first of its kind example that serves as a laboratory model for the application of fiber optic technology in real-world scenarios to monitoring biofilms in microbial corrosion and biofouling. © 2023, The Authors. All rights reserved.

关键词： Optical fibers

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Modulation of the Interfacial Properties of Tin Coatings to Generate Rigid-Flexible Sei for Better Sio Anodes

SSRN

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SSRN 2022年

作者： Shi, Hebang Zhang, He Wang, Rui Liu, Ming Shen, Zihan Chen, Jingbo Wu, Binbin Xiang, Maoqiao Li, Jun Zhang, Huigang Zhu, Qingshan Lv, Pengpeng State key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China University of Chinese Academy of Science Beijing100049 China College of Materials and Metallurgy Guizhou University Guiyang550025 China Shandong Tianan Huali New Materials Technology Co. Ltd. Shandong Province Jining272000 China

The performance of SiO anodes is critically dependent on the characteristics of the solid-electrolyte interface (SEI). However, the properties of SEI are challenging to control due to the complexity of its generation mechanisms. Among them, the electrode interface property is one of the crucial but easily neglected factors influencing the formation of SEI. Herein, considering the strong reaction tendency of HF with SiO, TiN is used as a coating to isolate HF from SiO to investigate the mechanism of influence of electrode interface on SEI. The dominant exposed crystalline planes of the TiN coatings are modified by tuning supersaturation during the coating process, and the changes in electrode interface properties were achieved. The variation of mechanical properties of SEI under different interface properties are discussed and analyzed, and the SiO/TiN-{100} electrode with a rigid-flexible SEI is preferred. Furthermore, the adsorption states of LiF on different TiN crystal planes are calculated and analyzed by the first-principle method to reveal the effect of the electrode interfacial property on SEI. Electrochemical tests show that the performance of the SiO/TiN-{100} electrode is significantly better than others. Finally, the electrochemical-mechanical coupled correlation between SEI and cycling performance was deeply revealed based on differential capacity analyses. © 2022, The Authors. All rights reserved.

关键词： Solid electrolytes

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Highly Efficient One-Pot Bioethanol Production from Corn Stalk with Biocompatible Ionic Liquids

SSRN

引用

SSRN 2022年

作者： Zhu, Qingqing Lu, Xingmei Gao, Die Yan, Dongxia Tang, Jing Cheng, Xiujie EI Sayed, Ibrahim EI Tantawy El-Gendy, Nour Sh Xin, Jiayu Zhang, Suojiang Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Innovation Academy for Green Manufacture Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China Sino Danish College University of Chinese Academy of Sciences Beijing100049 China Langfang Technological Centre of Green Industry Langfang065006 China Chemistry Department Faculty of Science Menoufia University Shebin El-Kom Egypt Nasr City CairoPO 11727 Egypt 6th of October City GizaPO 12566 Egypt Henan University Zhengzhou450001 China

The transformation of lignocellulose into biofuel is of great significance as the world’s nonrenewable resources run down. However, the efficiency of ionic liquids (ILs) and the cost caused by washing and separation of ILs are urgent problems that need to be solved. In this work, one-pot bioethanol production with biocompatible ionic liquids was proposed. We found that the crystallinity (from 0.68 to 0.43) and thermal stability (initial decomposition temperature from 280°C to 275°C and melting point decreased) of corn stalk after being pretreated by [Ch][Gly] trend to become easier to depolymerization characterized by XRD, TGA, and DSC. Under a one-pot process, [Ch] [Gly] pretreatment efficiency could achieve a 9-fold sugar yield, i.e., 324.7 mg glucose/PU [Ch] [Gly] and 131.8 mg xylose/PU [Ch] [Gly] (1PU IL=10 g, 3 wt% [Ch] [Gly] aqueous). The conditions for the whole process were optimized (pretreatment: 140°C, 2h, 10 wt% biomass loading, 3 wt% [Ch][Gly];saccharification: 50°C, 120 h, 25 mL water, 1 MPa CO2 pressure, 40 mg enzymes/g biomass;fermentation: 30 wt% yeast loading ) and the glucose, xylose, and bioethanol yield could be up to 80%, 79%, and 84%, respectively. Besides, we found that the accessibility and lignin distribution were important to determining enzymatic digestibility by LSCM and BET. Increasing surface area and pore size could enhance accessibility for enzymes to attack cellulose and hemicellulose. © 2022, The Authors. All rights reserved.

关键词： Biomass

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The Thermodynamic Origins of Chiral Twist in Monolayer Assemblies of Hard Rod-like Colloids

arXiv

引用

arXiv 2022年

作者： Liu, Yawei Wood, Jared A. Giacometti, Achille Widmer-Cooper, Asaph ARC Centre of Excellence in Exciton Science School of Chemistry University of Sydney SydneyNSW2006 Australia Beijing Key Laboratory of Ionic Liquids Clean Process CAS Key Laboratory of Green Process and Engineering State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing100190 China The University of Sydney Nano Institute University of Sydney SydneyNSW2006 Australia Dipartimento di Scienze Molecolari e Nanosistemi Università Ca’ Foscari di Venezia Campus Scientifico Edificio Alfa via Torino 155 Mestre Venezia30170 Italy Ca’ Bottacin 3911 Dorsoduro Calle Crosera Venice30123 Italy

The propagation of chirality across scales is a common but poorly understood phenomenon in soft matter. In this work, we use computer simulations to study chiral monolayer assemblies formed by hard rod-like colloidal particles in the presence of non-adsorbing polymer and characterize the thermodynamic driving forces responsible for the twisting. Simulations show that straight (achiral) rods assemble into monolayers with a spontaneous twist that is either left- or right-handed, while helical (chiral) rods lead to assemblies with preferential chiral features that depend on their handedness and curliness. The onset of chirality in these monolayers can be traced back to small clusters formed at the initial stage of the self-assembly. In these microscopic monolayers, entropy drives twisting in ways that differ from the assumptions on which existing continuum theory is built. Depending on the geometry of the constituent rods, the preferred chiral twist can be driven by entropy gain of the polymers, or of the rods, or both. In addition, the variation of the polymer entropy with twist depends on changes in both the surface area and the volume of the monolayer. Rod fluctuations perpendicular to the monolayer also play an important role in stabilising the twisting. © 2022, CC BY.

关键词： Monolayers

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Performance enhancement for nanofluid-cooled microchannel heat sink

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Yingyong Jichu yu Gongcheng Kexue Xuebao/Journal of Basic Science and engineering 2012年第SUPPL.期20卷 169-180页

作者： Lin, Lin Wang, Xiaodong Wang, Zhenhua Department of Thermal Engineering University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources North China Electric Power University Beijing 102206 China Beijing Key Laboratory of Multiphase Flow and Heat Transfer for Low Grade Energy North China Electric Power University Beijing 102206 China Xi'an Shaangu Power Co. LTD Xi'an 710075 China

Based on selecting the proper formulas of thermal conductivity and viscosity for nanofluids, a three-dimensional fluid-solid conjugated model was developed to analyze the effect of the heat sink structure, the nanoparticle kind, diameter and volume fraction, and the base fluid kind on the cooling performance of microchannel heat sink. The results showed that: (1) thermal dispersion effect caused by nanoparticle random motion enhanced the thermal convection of nanofluid thus enhances significantly the cooling performance of heat sink;(2) the enhancement of nanofluids was closely dependent on the heat sink structure and the dependence was distinct from the pure fluid, hence the heat sink structure was needed to be optimized for nanofluids as coolants;(3) as the nanoparticle volume fraction increases, the thermal resistance reduced and the pressure increased, the water-based Al2O3 nanofluid with 0.5% volume fraction was the optimal coolant which caused 10.1% decrease in the thermal resistance and only 0.38% increased in the pressure drop;(4) although the nanoparticle size had a small effect on the thermal resistance, nanoparticles with small diameter were recommended with consideration of stability of nanofluids;(5) Al2O3 nanoparticle was superior to TiO2 and CuO, and water was the better base fluid than ethylene glycol and engine oil.

关键词： Nanoparticles

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Expression of oxidation ability for metallurgical slags based on the ion and molecule coexistence theory

Beijing Keji Daxue Xuebao/Journal of University of Science a...

引用

Beijing Keji Daxue Xuebao/Journal of University of Science and Technology Beijing 2013年第12期35卷 1569-1579页

作者： Li, Peng-Cheng Li, Jin-Yan Zhang, Meng Zhang, Jian-Liang Zhang, Jian Yang, Xue-Min State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Beijing 100083 China State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing 100190 China Beijing Metallurgical Equipment Research and Design Institute Company Limited China Metallurgical Group Corporation Beijing 100029 China

The defined oxidation ability of metallurgical slag based on the ion and molecule coexistence theory (IMCT), i.e., the comprehensive mass action concentration of iron oxides NFetO, was verified by comparing the calculated NFetO and the reported activity of iron oxides aFetO in selected 14 slag systems. To calculate NFetO in the selected slag systems, a thermodynamic model for calculating the mass action concentrations of structural units in CaO-SiO2-MgO-FeO-Fe2O3-MnO- Al2O3-P2O5 type slag systems, i.e., the IMCT-Nt thermodynamic model was developed. NFetO in the other 13 slag systems can be obtained by simplifing this IMCT-Nt. It is shown that the defined comprehensive mass action concentration of iron oxides NFetO is more accurate than the measured activity of iron oxides aFetO in characterizing the oxidation ability of the selected FetO-containing slag systems.

关键词： Manganese oxide

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Tensorial properties via the neuroevolution potential framework: Fast simulation of infrared and Raman spectra

arXiv

引用

arXiv 2023年

作者： Xu, Nan Rosander, Petter Schäfer, Christian Lindgren, Eric Österbacka, Nicklas Fang, Mandi Chen, Wei He, Yi Fan, Zheyong Erhart, Paul Institute of Zhejiang University-Quzhou Quzhou324000 China College of Chemical and Biological Engineering Zhejiang University Hangzhou310058 China Department of Physics Chalmers University of Technology GothenburgSE-41296 Sweden State Key Laboratory of Multiphase Complex Systems Institute of Process Engineering Chinese Academy of Sciences Beijing China Department of Chemical Engineering University of Washington SeattleWA98195 United States College of Physical Science and Technology Bohai University Jinzhou121013 China

Infrared and Raman spectroscopy are widely used for the characterization of gases, liquids, and solids, as the spectra contain a wealth of information concerning in particular the dynamics of these systems. Atomic scale simulations can be used to predict such spectra but are often severely limited due to high computational cost or the need for strong approximations that limit application range and reliability. Here, we introduce a machine learning (ML) accelerated approach that addresses these shortcomings and provides a significant performance boost in terms of data and computational efficiency compared to earlier ML schemes. To this end, we generalize the neuroevolution potential approach to enable the prediction of rank one and two tensors to obtain the tensorial neuroevolution potential (TNEP) scheme. We apply the resulting framework to construct models for the dipole moment, polarizability, and susceptibility of molecules, liquids, and solids, and show that our approach compares favorably with several ML models from the literature with respect to accuracy and computational efficiency. Finally, we demonstrate the application of the TNEP approach to the prediction of infrared and Raman spectra of liquid water, a molecule (PTAF–), and a prototypical perovskite with strong anharmonicity (BaZrO3). The TNEP approach is implemented in the free and open source software package gpumd, which makes this methodology readily available to the scientific community. Copyright © 2023, The Authors. All rights reserved.

关键词： Computational efficiency

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Aeroelastic Analysis of Preset Angle for A Typical Airfoil Section with Cubic Nonlinear Stiffness

引用

Journal of Physics: Conference Series 2019年第1期1300卷

作者： Guofang Nan Di Ding Weitao Wang School of Energy and Power Engineering University of Shanghai for Science and Technology China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering 516 Jungong Road 200093 Shanghai P.R. China

The influences of the preset angle on the dynamic responses of the typical airfoil section with cubic nonlinear stiffness were investigated under consideration of the aerodynamic flutter onset due to certain angle of attack. The typical airfoil model with cubic nonlinear stiffness is developed to analyze the plunging and the pitching motions for the airfoil section. Based on the Grossman's quasi steady aerodynamic model, the aerodynamic lift and the moment can be obtained and then the equation of motion for the airfoil section is derived by applying the Lagrange theorem. The effects of the preset angle and the oncoming flow speed on the nonlinear dynamics are analyzed by means of the bifurcation diagram, the frequency-amplitude diagram, the time history, etc. Simulation results show that the preset angle influences the intensity of the vibration, moderate or severe, stable or unstable, even under certain circumstance, the jump and chaos phenomenon occur; and the oncoming flow speed affects the distribution of the vibration energy for the plunging and the pitching motions. The unstable stall region for the responding parameters should be avoided to keep the airfoil safe in engineering practice. Some qualitative and quantitative rules are obtained for the airfoil design and the flutter suppression.

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Exploring Geometric Chirality in Nanocrystals for Boosting Solar-to-Hydrogen Conversion

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Angewandte Chemie 2024年第45期136卷

作者： Wenlong Fu Qi Gao Chunyang Zhang Lili Tan Biao Jiang Chengyu Xiao Prof. Maochang Liu Prof. Peng-peng Wang State Key Laboratory for Mechanical Behavior of Materials Shaanxi International Research Center for Soft Matter School of Materials Science and Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 PR China International Research Center for Renewable Energy State Key Laboratory of Multiphase Flow in Power Engineering Xi'an Jiaotong University Xi'an Shaanxi 710049 PR China

Advancing catalyst design is pivotal for the enhancement of photocatalytic processes in renewable energy conversion. The incorporation of structural chirality into conventional inorganic solar hydrogen nanocatalysts promises a significant transformation in catalysis, a feature absent in this field. Here we unveil the unexplored potential of geometric chirality by creating a chiral composite that integrates geometric chiral Au nanoparticles (NPs) with two-dimensional C 3 N 4 nanosheets, significantly boosting photocatalytic H 2 evolution beyond the achiral counterparts. The superior performance is driven by the geometric chirality of Au NPs, which facilitates efficient charge carrier separation through the favorable C 3 N 4 -chiral Au NP interface and chiral induced spin polarization, and exploits high-activity facets within the concave surfaces of chiral Au NPs. The resulting synergistic effect leads to a remarkable increase in photocatalytic H 2 evolution, with an apparent quantum yield of 44.64 % at 400 nm. Furthermore, we explore the selective polarized photo-induced carrier separation behavior, revealing a distinct chiral-dependent photocatalytic HER performance. Our work advances the design and utilization of chiral inorganic nanostructures for superior performance in energy conversion processes.

关键词： Geometric chirality Nanoparticles Photocatalytic hydrogen evolution reaction Chiral effect

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A [email protected] reinforced concrete structure derived from nickel foam for efficient visible-light H 2 production

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Chemical engineering Journal 2020年 393卷

作者： Chao Zhang Baoquan Liu Xi Cheng ZhenMei Guo Tao Zhuang Zhiguo Lv State Key Laboratory Base for Eco-chemical Engineering Key Laboratory of Multiphase Flow Reaction and Separation Engineering of Shandong Province College of Chemical Engineering Qingdao University of Science and Technology Qingdao 266042 China Guangxi Key Laboratory of Petrochemical Resource Processing and Process Intensification Technology Guangxi University Nanning 530004 China Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) College of Chemistry Nankai University Tianjin 300071 China

High-efficient noble-metal-free photocatalyst is vital to realize high H 2 evolution. In consideration of this, we design a [email protected] reinforced concrete structure derived from nickel foam (NF) via a simple one-pot oil bath strategy. The whole preparation process is started with the growth of NiS rods on NF. Subsequently, NiS rods are encased in CdS gradually under oil both conditions. After the combination of NiS rods and CdS, the photoelectrical properties of primeval CdS are greatly optimized, e.g. , photoelectric responsiveness, impedance and light absorption capacity. Moreover, the H 2 evolution rate of [email protected] is increased significantly from 2706 to 40601 μmol g −1 h −1 under visible-light irradiation (λ > 420 nm), which is about 15 times higher than that of pure CdS, thereby confirming the excellent synergistic effect between NiS rods and CdS. Additionally, the photocatalytic performance of [email protected] was stronger than that of CdS/NiS-NPs (6726 μmol g −1 h −1 ) and CdS-NPs/NiS (1639 μmol g −1 h −1 ), highlighting the advantages of CdS (prepared using oil bath treatment) and NiS rods (originated from NF growth). Lastly, according to experiment data and DFT calculation results, a viable mechanism for [email protected] is tentatively proposed.

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