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Plasma Science and Technology 2024年第10期26卷 123-132页

作者： Siyin ZHOU Xiang liu Wansheng NIE Shuhui yuAN Space Engineering University Beijing 101416People’s Republic of China

To optimize the design of plasma injectors,the influence of different external electrodes on plasma-assisted flame stabilization was assessed by using a nonequilibrium plasma injector flame control *** electrical characteristics of the injector,flame structure parameters,flame intensity,discharge power,and cost-to-effectiveness ratio under different external electrodes(four mesh electrodes and one copper foil electrode)were analyzed using electrical and optical *** results show that reducing the mesh size of the external electrode leads to a decrease in breakdown *** with a ceramic dielectric barrier-based injector,an injector with a quartz dielectric barrier produces a higher breakdown voltage under the same *** the same actuation voltage,the discharge current increases as the mesh size of the external electrode decreases,and combustion is enhanced by the discharge plasma;therefore,it is better to adopt a smaller mesh hole size to realize good flame stabilization under a lower actuation ***,under the studied working conditions,reducing the mesh hole size of the external electrode increases the cost-to-effectiveness ratio of plasma injector-based flame ***,considering the cost-to-effectiveness ratio and the weight of the injector,an external electrode with a larger mesh hole size should be chosen,which contradicts the above rule.

关键词： flame stabilization alternating current driven dielectric barrier discharge plasma injector plasma-assisted combustion external electrode

Percarbonate activation catalyzed by nanoblocks of basic copper molybdate for antibiotics degradation: High performance, degradation pathways and mechanism

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Chinese Chemical Letters 2024年第10期35卷 375-378页

作者： Xiaotao Jin Yanlan Wang Yingping Huang Di Huang Xiang liu Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education College of Materials and Chemical EngineeringChina Three Gorges UniversityYichang 443002China Department of chemistry and chemical engineering Liaocheng UniversityLiaocheng 252059China

Sodium percarbonate(Na_(2)CO_(3)·1.5H_(2)O_(2),SPC)has been extensively employed as a solid substitute of H_(2)O_(2)for Fenton process in water treatment,because of its high stability during the production,transport,storage and *** addition,SPC can be applied in a wider range of work pH,it is also applied as a buffer in Fenton reaction for preventing a drop in ***,we have synthesized basic copper molybdate(BCM)nanoblocks with the molecular formula of Cu_(3)(MoO_(4))_(2)(OH)_(2)as an efficient and heterogeneous catalyst for antibiotics degradation via percarbonate ***,fully physical characterizations confirmed BCM nanocomposite exhibited a structure of *** also found that BCM/SPC system could work in a much wider pH range,compared with H_(2)O_(2).Then,BCM/SPC system presented a good anti-interference ability for natural organic matter in OTC *** results and Quenching tests confirmed that the co-presence of·CO_(3)-,·O_(2)-,1O_(2)and·OH in BCM/SPC system.

关键词： Sodium percarbonate Fenton process Water treatment Copper molybdate Nanoblocks

Comparison of irradiation-induced void formations in tungsten with equiaxed and columnar structures

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Tungsten 2024年第4期6卷 794-805页

作者： liu Xi Jia-Jun Zhao Ji-Jun Zhao yuan-yuan Wang Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education) Dalian University of Technology

Tungsten(W) has been received much attention,since it is regarded as one of the most promising plasma facing materials for fusion *** are two typical morphologies of unirradiated polycrystalline W,which have the equiaxed and columnar grains,***,the role of arrangement of grain boundary(GB) in absorbing irradiation-generated point defects is still waiting to be *** current investigation,irradiation-induced void formations in W with equiaxed and columnar microstructures are predicted,respectively,using the developed phase-field *** significant kinetic behavior,such as the generation and annihilation of point defects and the interaction between point defects and GB,is reasonably *** density,size and porosity of void formed in these two microstructures are examined and analyzed according to the effects of GB ratio,temperature and damage *** analytical results show that higher GB ratio can effectively reduce void porosity,and the columnar-grained structure has better irradiation resistance than that of the equiaxed one in the case of small grain *** importantly,the predicted void sizes changed with temperature and damage rate agree well with the experimentally measured *** work has a more beneficial contribution to the microstructural improvement of International Thermonuclear Experimental Reactor-grade W.

关键词： Grain morphology Irradiation-induced void Phase-field Tungsten

GRK2-YAP signaling is implicated in pulmonary arterial hypertension development

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Chinese Medical Journal 2024年第7期137卷 846-858页

作者： Peng Ye yunfei Deng yue Gu Pengfei liu Jie Luo Jiangqin Pu Jingyu Chen yu Huang Nanping Wang Yong Ji Shaoliang Chen Division of Cardiovascular Molecular Laboratory Third Clinical CollegeNanjing Medical UniversityNanjingJiangsu 210006China Division of Cardiovascular Laboratory Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China Division of Cardiology Shanghai General HospitalSchool of MedicineShanghai Jiao Tong UniversityShanghai 200080China Division of Pulmonary Surgery Wuxi People’s HospitalNanjing Medical UniversityWuxiJiangsu 300247China Institute of Vascular Medicine The Chinese University of Hong KongHongkong 999077China Health Science Center East China Normal UniversityShanghai 200241China School of Pharmacy Nanjing Medical UniversityNanjingJiangsu 210004China Division of Cardiology Nanjing First HospitalNanjing Medical UniversityNanjingJiangsu 210006China

Background:Pulmonary arterial hypertension(PAH)is characterized by excessive proliferation of small pulmonary arterial vascular smooth muscle cells(PASMCs),endothelial dysfunction,and extracellular matrix remodeling.G protein-coupled receptor kinase 2(GRK2)plays an important role in the maintenance of vascular tone and blood ***,the role of GRK2 in the pathogenesis of PAH is ***:GRK2 levels were detected in lung tissues from healthy people and PAH patients.C57BL/6 mice,vascular smooth muscle cell-specific Grk2-knockout mice(Grk2^(∆SM22)),and littermate controls(Grk2^(flox/flox))were grouped into control and hypoxia mice(n=8).Pulmonary hypertension(PH)was induced by exposure to chronic hypoxia(10%)combined with injection of the SU5416(cHx/SU).The expression levels of GRK2 and Yes-associated protein(YAP)in pulmonary arteries and PASMCs were detected by Western blotting and immunofluorescence *** mRNA expression levels of Grk2 and Yes-associated protein(YAP)in PASMCs were quantified with real-time polymerase chain reaction(RT-PCR).Wound-healing assay,3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-di-phenytetrazoliumromide(MTT)assay,and 5-Ethynyl-2′-deoxyuridine(EdU)staining were performed to evaluate the proliferation and migration of ***,the interaction among proteins was detected by immunoprecipitation ***:The expression levels of GRK2 were upregulated in the pulmonary arteries of patients with PAH and the lungs of PH ***,cHx/SU-induced PH was attenuated in Grk2^(∆SM22) mice compared with littermate *** amelioration of PH in Grk2^(∆SM22) mice was accompanied by reduced pulmonary vascular *** vitro study further confirmed that GRK2 knock-down significantly altered hypoxia-induced PASMCs proliferation and migration,whereas this effect was severely intensified by overexpression of *** also identified that GRK2 promoted YAP expression and nuclear translocation in PASMCs,resulting in excessive PA

关键词： Pulmonary arterial hypertension GRK2 YAP Pulmonary artery smooth muscle cell Hypoxia

Coordination-driven self-assembly of a molecular 818knot and molecular borromean rings

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Science China Chemistry 2024年第11期67卷 3652-3656页

作者： Xiang Gao Dong liu Hai-Ning Zhang Guo-Xin Jin Department of Chemistry Fudan University

We report the facile construction of a molecular 818knot and a molecular Borromean rings assembly through self-assembly directed by Cp*Rh corner units. Two curved ligands of similar size and shape were used in this study. The slight steric differences between the two ligands induce the formation of distinctly different topologies of the assembled products. The structures were confirmed by single-crystal X-ray analysis and nuclear magnetic resonance spectroscopy.

关键词： coordination-driven Cp*Rh 818 knot Borromean rings

MOF-based materials facilitate efficient anaerobic digestion of organic wastes:integrating substrate bioavailability and microbial syntrophism

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Frontiers of Environmental Science & Engineering 2024年第8期18卷 153-157页

作者： Haoyu liu Ying Xu Xiang Chen Xiankai Wang Hang Wang Xiaohu Dai State Key Laboratory of Pollution Control and Resource Reuse School of Environmental Science and EngineeringTongji UniversityShanghai 200092China Shanghai Institute of Pollution Control and Ecological Security Shanghai 200092China YANGTZE Eco-Environment Engineering Research Center China Three Gorges CorporationWuhan 430010China National Engineering Research Center of Eco-Environment Protection for Yangtze River Economic Belt Wuhan 430010China

Anaerobic digestion(AD)of organic waste(OW)for methane production is generally *** of AD systems with traditional materials(e.g.,electroconductive materials)is a current focus of research and has been reported to assist methanogenesis by enhancing the productivity of microbial metabolism among syntrophic *** in the AD of organic wastewater,in which microbial cells come into direct contact with the dissolved substrate,in the complex multiphase AD system of OW,low substrate bioavailability is an inevitable obstacle to microbial syntrophism for ***,we propose that improving substrate bioavailability and microbial syntrophism is a powerful strategy for ensuring material-assisted efficient AD of *** on the above considerations,metal-organic frameworks(MOFs),with their exceptionally high porosity,outstanding multi-functionality,and tuneable structures,have excellent potential for application in multiphase anaerobic systems of OW to integrate substrate bioavailability and microbial syntrophism and drive efficient *** addition,MOFs with designable and tuneable natures have great potential for use in identifying suitable materials for anaerobic systems for different types of OW via machine-learning technologies,thereby effectively enhancing methanogenesis from ***,the sustainable application of MOFs in AD and the corresponding environmental risks warrant further investigation.

关键词： Anaerobic digestion Methane production Biodegradability Functional materials Metal-organic frameworks

Optimal Shape Factor and Fictitious Radius in the MQ-RBF:Solving Ill-Posed Laplacian Problems

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Computer Modeling in Engineering & Sciences 2024年第6期139卷 3189-3208页

作者： Chein-Shan liu Chung-Lun Kuo Chih-Wen Chang Center of Excellence for Ocean Engineering Taiwan Ocean UniversityKeelung202301TaiwanChina Department of Mechanical Engineering National United UniversityMiaoli36063TaiwanChina

To solve the Laplacian problems,we adopt a meshless method with the multiquadric radial basis function(MQRBF)as a basis whose center is distributed inside a circle with a fictitious radius.A maximal projection technique is developed to identify the optimal shape factor and fictitious radius by minimizing a merit function.A sample function is interpolated by theMQ-RBF to provide a trial coefficient vector to compute the merit *** can quickly determine the optimal values of the parameters within a preferred rage using the golden section search *** novel method provides the optimal values of parameters and,hence,an optimal MQ-RBF;the performance of the method is validated in numerical ***,nonharmonic problems are transformed to the Poisson equation endowed with a homogeneous boundary condition;this can overcome the problem of these problems being *** optimal MQ-RBF is extremely *** further propose a novel optimal polynomial method to solve the nonharmonic problems,which achieves high precision up to an order of 10^(−11).

关键词： Laplace equation nonharmonic boundary value problem Ill-posed problem maximal projection optimal shape factor and fictitious radius optimal MQ-RBF optimal polynomial method

Curcumin delivery nanoparticles based on Maillard reaction of Haematococcus pluvialis protein/galactose for alleviating acute alcoholic liver damage

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Food Science and Human Wellness 2024年第5期13卷 2629-2641页

作者： Xinyi liu yukun Song Shasha Cheng Mingqian Tan School of Food Science and Technology Dalian Polytechnic UniversityDalian 116034China National Engineering Research Center of Seafood Dalian 116034China

The aim of this study is to investigate the feasibility of Maillard reaction products of Haematococcus pluvialis protein and galactose(HPP-GAL)for improving the bioactivities of curcumin(CUR)for alleviating alcoholic liver *** was embedded into HPP-GAL nanoparticles by the self-assembly of hydrogen bonding and hydrophobic interaction with the particle size around 200 ***-GAL enhanced the encapsulation efficiency and loading amount of CUR with the value of(89.21±0.33)%and(0.500±0.004)%,*** stabilities of CUR under strong acid,salt ion stability and ultraviolet irradiation conditions were improved by the ***-GAL-CUR nanoparticles exhibited excellent concentration-dependent in vitro antioxidant activities including DPPH and ABTS scavenging rates,and better protective effect on CUR against gastric acid environment as well as longer release of CUR in simulated intestinal *** addition,the HPPGAL-CUR delivery system possessed liver targeting property due to the existence of GAL,which could effectively alleviate the alcohol-induced liver damage and the inflammation indexes by inhibiting the oxidative ***,HPP-GAL-CUR nanoparticles might be a potential candidate system for the prevention of alcoholic liver damage in the future.

关键词： Haematococcus pluvialis protein Galactose Curcumin nanocarrier Maillard reaction Alcoholic liver damage Liver targeting

Predicting moisture condensation risk on the radiant cooling floor of an office using integration of a genetic algorithm-back-propagation neural network with sensitivity analysis

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Energy and Built Environment 2024年第1期5卷 110-129页

作者： Meng Su Jiying liu Moon Keun Kim Xiaozhou Wu School of Thermal Engineering Shandong Jianzhu UniversityJinan 250101China Department of Civil Engineering and Energy Technology Oslo Metropolitan UniversityOslo N-0130Norway School of Civil Engineering Dalian University of TechnologyDalianChina

Pre-dehumidification time(τ_(pre))and pre-dehumidification energy consumption(E_(pre))play important roles in preventing the condensation of moisture on the floors of rooms that use a radiant floor cooling(RFC)***,there are few theoretical or experimental studies that focus on these two important *** this study,an artificial neural network(ANN)was used to predict condensation risk for the integration of RFC systems with mixed ventilation(MV),stratum ventilation(SV),and displacement ventilation(DV)systems.A genetic algorithm-back-propagation(GA-BP)neural network model was established to predict τ_(pre) and E_(pre).Both training data and validation data were obtained from tests in a computational fluid dynamics(CFD)*** results show that the established GA-BP model can predict τ_(pre) and E_(pre) *** coefficient of determination(R^(2))of τ_(pre) and of E_(pre) were,respectively,0.973 and *** an RFC system integrated with an MV,SV,or DV system,the lowest values of τ_(pre) and E_(pre) were with the DV system,23.1 s and 0.237 kWh,respectively,for a 67.5 m^(3) ***,the best pre-dehumidification effect was with integration of the DV and RFC *** study showed that an ANN-based method can be used for predictive control for condensation prevention in RFC *** also provides a novel and effective method by which to assess the pre-dehumidification control of radiant floor surfaces.

关键词： Condensation prevention Radiant floor cooling Ventilation system genetic algorithm BP neural network

Selective deposition of a MOF at the spikes of Au nanostars for SERS detection

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Nano Research 2024年第10期17卷 9166-9173页

作者： Yi liu Ka Kit Chui Xinyue Xia Han Zhang Xiaolu Zhuo Jianfang Wang School of Science and Engineering The Chinese University of Hong KongShenzhen 518172China Department of Physics The Chinese University of Hong KongShatinHong Kong 999077China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310000China

In the pursuit of advancing molecular sensing through surface-enhanced Raman spectroscopy(SERS),the combination of plasmonic nanoparticles and metal-organic frameworks(MOFs)has emerged as a highly effective approach to enhance the sensitivity and selectivity of SERS ***,most prior investigations have predominantly focused on MOF-coated plasmonic nanoparticles in core@shell or layer-by-layer configurations,leaving a notable knowledge gap in exploring alternative *** we present a facile method to construct a particle-on-mirror architecture by selectively coating a MOF,zeolitic imidazolate framework-8(ZIF-8),onto the tips of Au nanostars and subsequently depositing the resultant nanoparticles onto a Au *** design integrates the electric field enhancement at the sharp tips and nanogaps,along with the molecular enrichment function within the porous MOF immobilized at the tips and nanogaps,leading to a substantial boost in the SERS signal *** a unique SERS platform enables consistent and outstanding SERS performance for analytes of different *** work opens up a promising strategy for constructing multifunctional nanostructures for sensitive SERS detection in real-life scenarios.

关键词： electric field enhancement gold nanostars metal-organic frameworks molecular enrichment plasmon coupling surfaceenhanced Raman spectroscopy(SERS)substrates