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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi yao liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University College of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

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Ice lines as the origin for the gap/ring structure in protoplanetary disks: the issue of the assumed temperature profile

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Research in Astronomy and Astrophysics 2021年第7期21卷 91-98页

作者： yao liu Purple Mountain Observatory&Key Laboratory for Radio Astronomy Chinese Academy of SciencesNanjing 210023China

Gaps and rings are commonly seen in recent high-resolution ALMA observations of protoplanetary disks. Ice lines of volatiles are one of the mechanisms proposed to explain the origin for these substructures. To examine the ice line hypothesis, literature studies usually parameterize the midplane temperature with the analytic formula of a passively heated, flared disk. The temperature in this simplified expression is basically dependent on the stellar luminosity. I have built a grid of self-consistent radiative transfer models that feature the same stellar properties, but different disk parameters. The midplane temperature of these models shows a large dispersion over a wide range of radii, indicating that besides the stellar luminosity, the disk parameters also play an important role in determining the thermal *** the mid-plane temperature from radiative transfer simulation with the analytic solution shows a large difference between both approaches. This result suggests that special care on the assumed temperature profile has to be taken in the analysis of gap/ring origins, and conclusions drawn in previous works on the basis of the analytic temperature should be revisited. I further took the AS 209 disk as an example, and conducted a detailed radiative transfer modeling of the spectral energy distribution and the ALMA Band 6 image. The D137, D24 and D9 gaps are associated with the ice lines of major volatiles in the disk according to such a thorough analysis. However, if the temperature profile simply follows the analytic formula, none of these gaps matches the ice lines of the species considered here.

关键词： protoplanetary disks radiative transfer stars:formation

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Burden of mental disorders and risk factors in the Western Pacific region from 1990 to 2021

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World Journal of Psychiatry 2025年第1期15卷 93-105页

作者： Ya-Xin Xu Xiao-Xuan Niu Wen-Chang Jia Jing Wen Xue-Lin Cheng Yan Han Ming-Hui Peng Jing Zhou yao liu Sun-Fang Jiang Xiao-Pan Li Department of Health Management Centre Zhongshan HospitalFudan UniversityShanghai 200030China Department of General Practice Zhongshan HospitalFudan UniversityShanghai 200030China Department of Nutrition Zhongshan HospitalFudan UniversityShanghai 200032China School of Public Health Fudan UniversityShanghai 200032China

BACKGROUND The burden of mental disorders(MD)in the Western Pacific Region(WPR)re-mains a critical public health concern,with substantial variations across demogra-phics and *** To analyze the burden of MD in the WPR from 1990 to 2021,along with associated risk factors,to reveal changing trends and emerging *** We used data from the Global Burden of Disease 2021,analyzing prevalence,incidence,and disability-adjusted life years(DALYs)of MD from 1990 to *** methods included age-standardisation and uncertainty analysis to address variations in population structure and data *** Between 1990 and 2021,the prevalence of MD rose from 174.40 million cases[95%uncertainty interval(UI):160.17-189.84]to 234.90 million cases(95%UI:219.04-252.50),with corresponding DALYs increasing from 22.8 million(95%UI:17.22-28.79)to 32.07 million(95%UI:24.50-40.68).During this period,the burden of MD shifted towards older age *** and anxiety disorders were predominant,with females showing higher DALYs for depressive and anxiety disorders,and males more affected by conduct disorders,attention-deficit hyperactivity disorder,and autism spectrum ***,New Zealand,and Malaysia reported the highest burdens,whereas Vietnam,China,and Brunei Darussalam reported the ***,childhood sexual abuse and bullying,and intimate partner violence emerged as significant risk *** This study highlights the significant burden of MD in the WPR,with variations by age,gender,and *** coronavirus disease 2019 pandemic has exacerbated the situation,emphasizing the need for a coordinated response.

关键词： Mental disorders Western pacific region Global Burden of Disease Risk factors Disability-adjusted life years

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Existence,Multiplicity and Infinite Solvability of Positive Solutions for One-Dimensional p-Laplacian

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Acta Mathematica Sinica,English Series 2005年第4期21卷 691-698页

作者： Qing liu yao Department of Applied Mathematics Nanjing University of Finance and Economics Nanjing 210003 P. R. China

The existence, multiplicity and infinite solvability of positive solutions are established for some two-point boundary value problems of one-dimensional p-Laplacian. In this paper, by multiplicity we mean the existenc... 详细信息

关键词： One-dimensional p-Laplacian Positive solution Existence Multiplicity Infinite solvability

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Triple Positive Periodic Solutions of Nonlinear Singular Second-order Boundary Value Problems

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Acta Mathematica Sinica,English Series 2014年第2期30卷 361-370页

作者： Qing liu yao Department of Applied Mathematics Nanjing University of Finance and Economics

This paper studies the positive solutions of the nonlinear second-order periodic boundary value problem u″（t）＋ λ（t）u（t） = f（t,u（t））,a.e.t ∈ [0,2π],u（0） = u（2π）,u′（0） = u′（2π）,where f（t,u） is a local Carath′eodory *** shows that the problem is singular with respect to both the time variable t and space variable *** applying the Leggett-Williams and Krasnosel＇skii fixed point theorems on cones,an existence theorem of triple positive solutions is *** order to use these theorems,the exact a priori estimations for the bound of solution are given,and some proper height functions are introduced by the estimations.

关键词： Periodic boundary value problem singular nonlinearity triple positive solutions fixedpoint theorem

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Evolution of Galaxy Types and HI Gas in Hickson Compact Groups

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Research in Astronomy and Astrophysics 2022年第10期22卷 189-201页

作者： yao liu Ming Zhu National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China CAS Key Laboratory of FAST NAOCChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China

Compact groups have high galaxy densities and low velocity dispersions,and their group members have experienced numerous and frequent interactions during their *** provide a unique environment to study the evolution of *** examined the galaxies types and H I contents in groups to make a study on the galaxy evolution in compact *** used the group crossing time as an age indicator for galaxy *** sample is derived from the Hickson Compact Group *** obtained group morphology data from the Hyper-Leda database and the IR classification based on Wide-Field Infrared Survey Explorer fluxes from Zucker et *** cross-matching the latest released ALFALFA 100%H I source catalog with supplement by data found in literature,we obtained 40 galaxy groups with H I data *** confirmed that the weak correlation between H I mass fraction and group crossing time found by Ai&Zhu in SDSS groups also exists in compact *** also found that the group spiral galaxy fraction is correlated with the group crossing time,but the actively star-forming galaxy fraction is not correlated with the group crossing *** results seem to fit with the hypothesis that the sequential acquisition of neighbors from surrounding larger-scale structures has affected the morphology transition and star formation efficiency in compact groups.

关键词： galaxies evolution-galaxies groups general-galaxies ISM

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Modeling the arc and ring structures in the HD 143006 disk

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Science China(Physics,Mechanics & Astronomy) 2022年第6期65卷 137-149页

作者： yao liu Mario Flock Min Fang Purple Mountain Observatory&Key Laboratory for Radio Astronomy Chinese Academy of SciencesNanjing 210023China Max-Planck-Institut für Astronomie Heidelberg D-69117Germany

Rings and asymmetries in protoplanetary disks are considered as signposts of ongoing planet *** this work,we con-duct three-dimensional radiative transfer simulations to model the intriguing disk around HD143006 that has three dust rings and a bright arc.A complex geometric configuration,with a misaligned inner disk,is assumed to account for the asymmetric *** two-dimensional surface density is constructed by iteratively fitting the ALMA *** find that the dust tem-perature displays a notable discontinuity at the boundary of the *** ring masses range from 0.6 to 16 M⊕that are systematically lower than those inferred in the younger HL Tau *** arc occupies nearly 20%of the total dust *** a high mass fraction of dust grains concentrated in a local region is consistent with the mechanism of dust trapping into *** a gas-to-dust mass ratio of 30 that is constant throughout the disk,the dense and cold arc is close to the threshold of being gravitationally unstable,with the Toomre parameter Q∼***,our estimate of Q relies on the assumption for the unknown gas-to-dust mass *** a lower gas-to-dust mass ratio would increase the inferred Q ***-up high resolution observations of dust and gas lines are needed to clarify the origin of the substructures.

关键词： protoplanetary disks radiative transfer planet formation

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Mesh-connected rings topology for network-on-chip

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The Journal of China Universities of Posts and Telecommunications 2013年第5期20卷 30-36页

作者： liu You-yao GAO Meng School of Electronic Engineering Xi'an University of Posts & Telecommunications

With the feature size of semiconductor technology reducing and intellectual property （IP） cores increasing, on-chip interconnection network architectures have a great influence on the performance and area of system-on-chip （SoC） design. Focusing on trade-off performance, cost and implementation, a regular network-on-chip （NoC） architecture which is mesh-connected rings （MCR） interconnection network is proposed. The topology of MCR is simple, planar and scalable in architecture, which combines mesh with ring. A detailed theoretical analysis for MCR and mesh is given, and a simulation analysis based on the virtual channel router with wormhole switching is also presented. The results compared with the general mesh architecture show that MCR has better performance, especially in local traffics and low loads, and lower cost.

关键词： SOC NOC network topology routing algorithms performance evaluation

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Effects of Functional Fish Organizations on the Fractal Characteristics of the Microstructure of Feces

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Journal of Ocean University of China 2024年第6期23卷 1655-1665页

作者： QIAO Lina WANG Hongshuai liu yao Marine College Shandong UniversityWeihai 264209China

Fish feces affect the structure and function of aquatic ecosystems,and they are affected by the functional fish *** this research,Ctenopharyngodon idellus,Hypophthalmichthys molitrix,and Cyprinus carpio were selected to study the effects of different functional fish organizations on the fractal characteristics of fecal micro-structure by scanning electron microscopes(SEM),particles(pores)and cracks analysis system(PCAS).The results showed that fish feces pores mainly consisted of medium pores(cumulative pore number,97%)classified by the International Union of Pure and Applied Chemistry(IUPAC).The grain area fractal dimension D_(1) and the pore-number and pore-size fractal dimension D_(2) were 1.94-1.96 and 2.07-2.19,*** distribution of fish feces pores was very close to the Sierpinski carpet structure,which is the basic fractal construction methods widely used to describe the fractal of pore surface distribution.D_(1)(1.96)and D_(2)(2.19)of Hypophthalmichthys molitrix were the maximum values of the three functional *** with the habit of fish,it is inferred that the feces of ***,the finer the feed and the faster the swimming of fish,the higher the content of feces clay,the larger the fractal dimension of feces,the easier it is to decompose feces,and the high the content of nutrients and organic matter to release into the *** is demined that fish functional organizations affected the fractal characteristics and the stability of fish feces in *** study is helpful for further research on water quality prediction and the impact of functional fish organizations on the structure and function of the ecosystem.

关键词： functional fish organizations feces microstructure fractal characteristic scanning electron microscopy(SEM) particles(pores)and cracks analysis system(PCAS)

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Numerical Simulation of the Settling Flux of Biodeposition in a Bay with Cage Culture Through Similarity Theory and a Simplified Pollution Source

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Journal of Ocean University of China 2024年第1期23卷 247-254页

作者： liu yao CHEN Yifan GE Changzi Marine College Shandong UniversityWeihai 264209China

The settling flux of biodeposition affects the environmental quality of cage culture areas and determines their environmental carrying *** and effective simulation of the settling flux of biodeposition is extremely important for determining the spatial distribution of ***,biodeposition in cage culture areas without specific emission rules can be simplified as point source *** is a fluid simulation software that can simulate the dispersion of particulate matter simply and *** on the simplification of pollution sources and bays,the settling flux of biodeposition can be easily and effectively simulated by Fluent fluid *** the present work,the feasibility of this method was evaluated by simulation of the settling flux of biodeposition in Maniao Bay,Hainan Province,China,and 20 sampling sites were selected for determining the settling *** sampling sites P1,P2,P3,P4,P5,Z1,Z2,Z3,Z4,A1,A2,A3,A4,B1,B2,C1,C2,C3 and C4,the measured settling fluxes of biodeposition were 26.02,15.78,10.77,58.16,6.57,72.17,12.37,12.11,106.64,150.96,22.59,11.41,18.03,7.90,19.23,7.06,11.84,5.19 and 2.57 g d^(−1)m^(−2),*** simulated settling fluxes of biodeposition at the corresponding sites were 16.03,23.98,8.87,46.90,4.52,104.77,16.03,8.35,180.83,213.06,39.10,17.47,20.98,9.78,23.25,7.84,15.90,6.06 and 1.65 g d^(−1)m^(−2),*** was a positive correlation between the simulated settling fluxes and measured ones(R=0.94,P=2.22×10^(−9)<0.05),which implies that the spatial differentiation of biodeposition flux was well ***,the posterior difference ratio of the simulation was 0.38,and the small error probability was 0.94,which means that the simulated results reached an acceptable level from the perspective of relative ***,if nonpoint source pollution is simplified to point source pollution and open waters are simplified based on similarity theory,the setting flux of biodeposition i

关键词： fluent fluid simulation software pollution source simplification posterior difference ratio similarity theory Spear-man correlation

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