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Controllable synthesis of biomimetic wood stem nanoporous high entropy oxides catalysts for oxygen evolution reaction

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Nano Research 2025年第1期18卷 107-117页

作者： Wei wang Weiqi wang huihui wang Xing Lu Jinwen Zhang Yunzhuo Lu School of Materials Science and Engineering Dalian Jiaotong UniversityDalian 116028China School of Intelligence and Electronic Engineering Dalian Neusoft University of InformationDalian 116023China Guangdong Key Laboratory of Materials and Equipment in Harsh Marine Environment Guangzhou Maritime UniversityGuangzhou 510725China

Bubbles generated during the oxygen evolution reaction(OER)in water splitting readily adhere to the electrode surface,thereby impeding contact between the electrolyte and the active sites,thereby increasing the ***,it is imperative to elucidate the bubble release behavior and engineer electrodes that facilitate faster bubble *** this study,inspired by the wood stem of the Norway spruce,we synthesized a gradient nanoporous high-entropy oxide(GNP-HEO)electrode with a controllable pore *** GNP-HEO,featuring a well-controlled gradient in pore size,is achieved through a straightforward strategy combining selective laser melting with selective phase *** unique gradient nanoporous structure not only facilitates bubble release but also diminishes the bubble shielding effect in OER,thereby enhancing electrocatalytic *** affect interaction of Al,Co,Cr,Fe,and Ni,coupled with the gradient nanoporous structure,yields exceptional OER performance,evidenced by an overpotential of 250 mV at a current density of 50 mA/cm^(2) and a Tafel slope of 38.0 mV/dec in 1 M *** functional theory calculations confirm that the GNPHEO adheres to the adsorbate evolution mechanism reaction pathway and exhibits significant *** work highlights a promising approach for the design and synthesis of high-performance OER electrocatalysts.

关键词： oxygen evolution reaction high-entropy oxides selective phase dis-solution selective laser melting gradient nanoporous

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Geometric dilution of precision for GPS single-point positioning based on four satellites

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Journal of Systems Engineering and Electronics 2008年第5期19卷 1058-1062,F0003页

作者： wang huihui Zhan Xingqun Zhang Yanhua Inst. of Aerospace Science & Technology Shanghai Jiaotong Univ. Shanghai 200240 P. R. China

To improve the positioning accuracy in GPS point positioning, the geometric dilution of precision （GDOP） including HDOP, VDOP, TDOP, PDOP is commonly considered. The properties of the DOP for the GPS satellite navigation system are studied and the coordinate system is improved in order to decrease the amount of variables. In the end, by simulation and discussing the results, the corresponding conclusions are presented.

关键词： GPS dilution of precision GDOP navigation simulation.

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Mechanism of calcium lignosulfonate in apatite and dolomite flotation system

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International Journal of Minerals,Metallurgy and Materials 2022年第9期29卷 1697-1704页

作者： Bo Feng Liangzhu Zhang Wenpu Zhang huihui wang Zhiyong Gao Jiangxi Key Laboratory of Mining Engineering Jiangxi University of Science and TechnologyGanzhou 341000China Key Laboratory of Hunan Province for Clean and Efficient Utilization of Strategic Calcium-containing Mineral Resources Central South UniversityChangsha 410083China State Key Laboratory of Rare Metals Separation and Comprehensive Utilization Guangzhou 510600China

Since the physical and chemical properties of apatite and dolomite can be similar,the separation of these two minerals is ***,when performing this separation using the flotation method,it is necessary to search for selective *** experimental research was performed on the separation behavior of apatite and dolomite using calcium lignosulfonate as a depressant,and the mechanism by which this occurs was *** results show that calcium lignosulfonate has a depressant effect on both apatite and dolomite,but the depressant effect on dolomite is stronger at the same *** analysis shows that the adsorptive capacity of calcium lignosulfonate on dolomite is higher than that of apatite,which is due to the strong reaction between calcium lignosulfonate and the Ca sites on *** addition,there is a hydrogen bond between calcium lignosulfonate and dolomite,which further prevents the adsorption of sodium oleate to dolomite,thus greatly inhibiting the flotation of dolomite.

关键词： apatite dolomite calcium lignosulfonate depression mechanism

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Generating Periodic Orbits for Explorations of Elongated Asteroids

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Journal of Beijing Institute of Technology 2020年第1期29卷 129-138页

作者： huihui wang Yuntao Jiang Long Xiao Yonglong Zhang Beijing Aerospace Automatic Control Institute Beijing 100854China National Key Laboratory of Science and Technology on Aerospace Intelligence Control Beijing 100854China School of Aerospace Engineering Tsinghua UniversityBeijing 100084China

A practical method is proposed to search for periodic orbits of elongated *** method obtains required initial variables of periodic orbits by using the rotating mass dipole with appropriate parameters,and then implement local iterations to obtain the real orbits over an asteroid in the polyhedral *** this paper the dipole and polyhedral models,and list detailed procedures of the searching method are introduced.A planar single lobe orbit is presented to evaluate the effectiveness of the method,with the asteroid 216 Kleopatra of the triple asteroid system as a representative elongated *** applying the above method,ten families of periodic orbits around Kleopatra are identified and discussed with respect to their orbital stabilities and *** sample of the sombrero orbit is checked by calculating 1000 hours to examine its orbital *** the above orbits,the intriguing head-surrounding orbit is also analyzed.

关键词： periodic orbits elongated asteroids dipole model numerical iteration

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Surface Regional Heat(Cool) Island Effect and Its Diurnal Differences in Arid and Semiarid Resource-based Urban Agglomerations

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Chinese Geographical Science 2023年第1期33卷 131-143页

作者： CHEN Yan XIE Miaomiao CHEN Bin wang huihui TENG Yali School of Land Science and Technology China University of GeosciencesBeijing 100083China

With the rapid development of urban agglomerations in northwest arid and semiarid regions of China, the scope of the urban heat island(UHI) effect has gradually expanded and gradually connected, and has formed a regional heat island(RHI) with a larger range of impact to the regional environment. However, there are few studies on the heat island effect of urban agglomerations in arid and semiarid regions, so this paper selects the urban agglomeration of Hohhot, Baotou and Ordos(HBO) of Inner Mongolia, China as the study area. Based on the 8-day composite Moderate-resolution Imaging Spectroradiometer(MODIS) surface temperature data(156scenes in all) and land use maps for 2005, 2010, and 2015, we analyze the spatiotemporal distributions of regional heat(cool) islands(RH(C)I) and the responses of surface temperatures to land-use changes in the diurnal and interannual surface cities. The results showed that: 1) from 2005 to 2015, urban areas showed the cold island effect during the day, with the area of the cold island showing a shrinking feature;at night, they showed the heat island effect, with the area of the heat island showing a first decrease and then an increase.2) From 2005 to 2015, the land development(unutilized land to building land) brings the greatest temperature increase(ΔT = 1.36°C)during the day, while the greatest temperature change at night corresponds to the conversion of cultivated land to building land(ΔT =0.78°C) exhibited the largest changes at night. From 2010 to 2015, the land development(grassland to building land) bring the greatest temperature increase(ΔT = 0.85°C) during the day, while the great temperature change at night corresponds to the conversion of water areas to building land(ΔT = 1.38°C) exhibited the largest changes at night. Exploring the spatial and temporal evolution of surface urban heat(cool) islands in urban agglomerations in arid and semiarid regions will help to understand the urbanization characteristics of urban agglomerat

关键词： regional heat(cool)island(RH(C)I) urban agglomeration arid and semiarid areas land-use change land surface temperature(LST)

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Dissipation of polycyclic aromatic hydrocarbons in crop soils amended with oily sludge

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Acta Geochimica 2016年第4期35卷 437-444页

作者： Shaoping Kuang Wenjuan Yu Yan Song Yaqing Su huihui wang Lina wang Qingdao University of Science and Technology Zhengzhou Road 53Qingdao 266042ShandongPeople's Republic of China Shandong Provincial Key Laboratory of Eco-Environmental Science for Yellow River Delta Binzhou UniversityBinzhou 256600ShandongPeople's Republic of China

Oil fields present a potential ecological risk to nearby farmland soil. Here we present a new method designed to evaluate the ability of winter wheat(Triticum aestivum) to contribute to the dissipation of polycyclic aromatic hydrocarbons(PAHs), which are priority pollutants in soils contaminated by oily sludge. The influence of different doses of oily sludge on the dissipation of PAHs was studied along with individual PAH profiles in soils after different periods of plant growth. Five soil samples were artificially contaminated with different percentages of oily sludge(0 %, 5 %, 10 %, 15 % and 20 %). Winter wheat grew in the oily sludge–amended soils for 265 *** content in the soils was monitored over the course of the study. The rate of PAH dissipation is related to the properties of different PAHs, period of winter wheat growth, and oily sludge application dose. Analysis for treated soils indicates that the dissipation of PAHs increased significantly over the first 212 days, followed by minimal changes over the final 53 days of treatment. In contrast, PAH dissipation slowed with increasing oily sludge application. For each PAH, the experimental results showed a significant compound-dependent trend. Winter wheat in the present study significantly enhanced the dissipation of PAHs in oily sludge–contaminated soil.

关键词： Oily sludge Soil Polycyclic aromatic hydrocarbons Dissipation Bioremediation

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Spatio-temporal analysis of human wellbeing and its coupling relationship with ecosystem services in Shandong province, China

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Journal of Geographical Sciences 2023年第2期33卷 392-412页

作者： wang Chao wang Xuan wang Yifan ZHAN Jinyan CHU Xi TENG Yanmin LIU Wei wang huihui State Key Laboratory of Water Environment Simulation School of EnvironmentBeijing Normal UniversityBeijing 100875China Research Center for Eco-environmental Engineering Dongguan University of TechnologySongshan LakeDongguan 523808GuangdongChina College of Geography and Environment Shandong Normal UniversityJinan 250014China

Rapid economic and social change promotes to improve human wellbeing(HW),but poses threats to ecosystems and the *** the coupling relationship between HW and ecosystem services(ES)is crucial for informing high-quality ***,we built a comprehensive index system for HW assessment,and evaluated HW for 17 prefecture-level cities in Shandong province,China,from 2000 to ***,we quantified ES based on land use ***,we assessed the coupling coordination degree and analyzed the relationships between HW and each type of ES *** results were as follows:(1)HW values increased overall in Shandong,with the highest value in Jinan(0.8034)and the lowest value in Heze(0.4965)in 2018.(2)The total ES values for the 17 cities increased *** ranking of 17 cities according to the ES value per unit area was different from the ranking according to the total ES value.(3)All 17 cities in Shandong were in the coordinated development phase after 2015,with increasing coupling coordination *** were clear positive relationships between HW and *** and specific policy recommendations were proposed,providing scientific evidence and a reference for Shandong’s urban management and policy formulation.

关键词： land use coupling human wellbeing ecosystem services Shandong

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Phase change,micro-structure and reaction mechanism during high temperature roasting of high grade rare earth concentrate

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Journal of Rare Earths 2020年第10期38卷 1140-1150,I0005页

作者： huihui wang Mei Li Dongliang Zhang Kai Gao Jianfei Li Zongxi Weng Wei Xu Mining Research Institute Inner Mongolia University of Science&TechnologyBaotou 014010China Key Laboratory of Green Extraction&Efficient Utilization of Light Rare-Earth Resources Ministry of EducationBaotou 014010China

The deposit of Bayan Obo in Inner Mongolia is the world’s largest rare earth element(abbreviated as REE)*** exploration of the theory of mineral formation of Bayan Obo is an important foundation for mineralogical research,and is the scientific basis for mining,industrial beneficiation,smelting and extraction,and processing and *** the rapid development of science and technology,the demand for the utilization of rare earth elements is increasing,and the separation process between rare earth elements needs to be *** purpose of this paper is to provide high temperature experimental information for the formation and application of rare earth *** this end,the mineral evolution of high-grade rare earth concentrates with increasing temperature and the migration of rare earths at different stages and their reaction mechanisms were *** to thermogravimetric analysis and differential scanning calorimetry(TG-DSC),calcination was carried out at different temperature ranges,and the calcined products were characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FT-IR),scanning electron micro scope and energy dispers ive spectrometer(SEM-EDS)and other analytical *** re sults are shown in this process,the ra re earth phase is first converted into rare earth oxide and rare earth *** the temperature increases,Ca5(PO4)3 F and a large number of self-shaped spherical Ca-RE-OF and Ca-RE-PO4 particles are formed,and the separation of La and Ce elements is *** rding to the phase diagram analysis,the production of Ca5(PO4)3 F is due to the reaction of monazite and fluorite,and the phases CeF2 and Ce F3 are formed during the *** it reaches 1500℃,barium ferrite is produced and a new substance containing Ba2+is formed.

关键词： High grade concentrates High-temperature roasting Rare-earth phase Decomposed Mechanism

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Comparative acetylome analysis reveals the potential mechanism of high fat diet function in allergic disease

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Food Science and Human Wellness 2023年第3期12卷 889-894页

作者： Yanan Sun Ning Liu huihui wang Taiqi Qu Fazheng Ren Yixuan Li Key Laboratory of Precision Nutrition and Food Quality Department of Nutrition and HealthChina Agricultural UniversityBeijing 100193China College of Food Science and Engineering Gansu Agricultural UniversityLanzhou 730070China

Modern technological lifestyles promote allergic diseases,especially food *** underlying molecular mechanisms remain to be *** acetylation is one of the most important post-translational modifications,and it is involved in regulating multiple body metabolic *** study aimed to clarify the effects of a high-fat diet(HFD)on allergy risk and the underlying ***-week-old male C57 BL/6 J mice were randomly divided into two groups and fed a normal fat diet(NFD)or HFD for 24 ***,serum lipids were measured,and skeletal muscle was collected for acetylome *** with the findings in the NFD group,HFD-fed mice were obese and *** analysis also revealed 32 differentially expressed proteins between the HFD and NFD *** these,eight acetylated proteins were upregulated in the HFD *** addition,13 and 11 proteins were acetylated only in the HFD group and NFD group,*** proteins were mainly involved in regulating energy metabolism and mitochondrial *** study provides information regarding the underlying molecular mechanisms by which HFD promotes allergy.

关键词： Allergic disease High fat diet Skeletal muscle Acetylome

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BET protein inhibitor apabetalone represses Porphyromonas gingivalis LPS-induced macrophage M1 polarization via regulating miR-130a/STAT3 axis

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BIOCELL 2022年第10期46卷 2281-2289页

作者： MEIHUA CHEN huihui wang XIAOFENG CHEN YAN CHEN TIANYING BIAN Department of Periodontics Shanghai Stomatological Hospital&School of StomatologyFudan UniversityShanghai200001China Shanghai Key Laboratory of Craniomaxillofacial Development and Diseases Fudan UniversityShanghai200001China Department of Stomatology Shanghai Fifth People’s HospitalFudan UniversityShanghai200240China

Periodontitis is a frequent chronic inflammatory disorder destroying *** studies have revealed the role of bromodomain and extraterminal domain inhibitor(BETi)and microRNA(miR)-130a in regulating macrophage polarization and pro-inflammatory ***,little is known about whether apabetalone(a novel BETi)and miR-130a are correlated with chronic inflammatory state in periodontitis by regulating macrophage *** murine RAW264.7 macrophages were applied as an in vitro inflammatory *** treatment with Porphyromonas gingivalis-derived lipopolysaccharide(Pg LPS)and apabetalone,the expression of macrophage M1 polarization markers and inflammatory cytokines was assessed using real-time PCR,western blot,and enzyme-linked immuno sorbent assay(ELISA).MiR-130a level was assessed using real-time PCR,and the target gene was identified using dual luciferase reporter *** demonstrated that apabetalone repressed Pg LPS-induced macrophage M1 polarization in a dose-dependent manner,as evidenced by decreased expression of inducible nitric oxide synthase(iNOS),CD86,and pro-inflammatory cytokines,and increased expression of Arg-1 and ***,Pg LPS increased miR-130a expression in macrophages,whereas apabetalone treatment repressed the ***,forced expression of miR-130a promoted macrophage M1 polarization,and signal transducer and activator of transcription(STAT)-3 was the direct target gene of miR-130a in the *** together,apabetalone decreases Pg LPS-induced macrophage M1 polarization via regulating miR-130a-3p/STAT3 axis,and may be a promising target for the clinical management of periodontitis.

关键词： Periodontitis Macrophage polarization Porphyromonas gingivalis BET inhibitor miRNA

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