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Acta Mechanica Solida Sinica 2022年第5期35卷 813-823页

作者： jiayue wang Yin Yu Zhongcheng Mu Yile Hu Aerospace Structure Research Center School of Aeronautics and AstronauticsShanghai Jiao Tong UniversityShanghai200240China School of Aeronautics and Astronautics Shanghai Jiao Tong UniversityShanghai200240China

The effect of micro-void on transverse stiffness and strength for fiber-reinforced composites subjected to load perpendicular to fiber is studied using the state-based peridynamic(PD)*** heterogeneous microstructure with micro-voids are discretized with irregular and non-uniform grids on *** PD representative volume element with randomly distributed and sized micro-voids has been established with periodic boundary conditions.A parametric study was performed to evaluate the effects of void fraction and void size on transverse *** was found that the transverse modulus decreases with the void fraction in the range of 0.5–2%.A smaller void has a greater impact on the transverse modulus than a larger void under the same void *** crack growth path for the multi-fiber model subjected to transverse tension was *** PD predictions show that cracks initiate at the interface between fiber and matrix,then deflect to the micro-voids *** PD predictions match well with the analytical and experimental observations available in the literature.

关键词： State-based peridynamics Micro-void Non-uniform discretization Periodic boundary condition Transverse mechanical property

On a class of almost regular Landsberg metrics

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Science China Mathematics 2019年第5期62卷 935-960页

作者： Shasha Zhou jiayue wang Benling Li Department of Mathematics Ningbo University

There is a long existing "unicorn" problem in Finsler geometry: whether or not any Landsberg metric is a Berwald metric? Some classes of metrics were studied in the past and no regular non-Berwaldian Landsberg metric was found. However, if the metric is almost regular(allowed to be singular in some directions),some non-Berwaldian Landsberg metrics were found in the past years. All of them are composed by Riemannian metrics and 1-forms. This motivates us to ?nd more almost regular non-Berwaldian Landsberg metrics in the class of general(α, β)-metrics. In this paper, we ?rst classify almost regular Landsberg general(α, β)-metrics into three cases and prove that those regular metrics must be Berwald metrics. By solving some nonlinear PDEs,some new almost regular Landsberg metrics are constructed which have not been described before.

关键词： Finsler metric Landsberg metric Berwald metric (α,β)-metric

Review of analyses on crowd-gathering risk and its evaluation methods

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Journal of Safety Science and Resilience 2023年第1期4卷 93-107页

作者： Wenguo Weng jiayue wang Liangchang Shen Yushan Song Institute of Public Safety Research Department of Engineering PhysicsTsinghua UniversityBeijing 100084China Public Order School People's Public Security University of ChinaBeijing 100038China

Overcrowding and stampedes may occur in public places with the gathering of *** mitigate and prevent risk,the accident mechanism and methods for monitoring and evaluating crowd-gathering risk were *** studies are reviewed and summarized in this *** evolution process of crowd-gathering risk and precipitating factors were explained *** monitoring methods are classified into three types according to the key technologies *** exploring risk evaluation methods for crowd gathering are outlined,and the three main paradigms were ***,the shortcomings and future research points are summarized to promote more in-depth and comprehensive studies on crowd-gathering risk,develop monitoring technologies,and build an integrated system of risk management.

关键词： Crowd-gathering risk Accident mechanism Risk monitoring Risk assessment

How farmers’non-agricultural employment affects rural land circulation in China?

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Journal of Geographical Sciences 2020年第3期30卷 378-400页

作者： wang jiayue XIN Liangjie wang Yahui Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China School of Geographical Science Southwest UniversityChongqing 400715China

To clarify the impact of non-agricultural employment on rural land circulation in China,we built logit models using the Chinese Household Income Project 2013 dataset,which includes 18,948 household samples over 15 provinces,126 cities and 234 counties of China in *** use the proportion of non-agricultural income,the proportion of non-agricultural laborers and non-agricultural fixed operating assets to reflect the degree of the households’dependence on agriculture,the degree of the households’laborers committed to non-agricultural employment and the stability of non-agricultural employment,*** results show that the stability of non-agricultural employment is an important reason for farmers to transfer out their land,and an increase in non-agricultural income is the fundamental *** proportion of non-agricultural assets has the greatest impact on the decision to transfer land,followed by the proportion of non-agricultural *** unit increase in the non-agricultural income ratio has a stronger effect on the transfer-out decision than it does on the transfer-in decision,which is a 0.09 increase of the probability of transfer-out the land and a 0.07 decrease of the probability of transfer-in the *** terms of regional differences,when considering the impact of non-agricultural employment on the land transfer-out decision,the impacts of non-agricultural income and labor force are the greatest in the Central *** impact of non-agricultural assets is the greatest in the Eastern *** the Eastern region,the decision to transfer out land is mainly affected by non-agricultural assets and the non-agricultural labor force,and the decision to transfer in land is mainly affected by non-agricultural *** the Central and Western regions,the decision to transfer out land is mainly affected by non-agricultural assets,non-agricultural income and the non-agricultural labor force,in that *** decision to transfer in land in the Central

关键词： farmers’non-agricultural employment rural land circulation moderate scale management China CHIP2013 dataset

pH value monitoring during human albumin purification with near infrared spectroscopy and chemometrics

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Journal of Innovative Optical Health Sciences 2018年第3期11卷 28-37页

作者： Qiaofeng Sun Zhongyu Sun Fei wang Lian Li Ronghua Liu Lei Nie jiayue wang Mingyu wang Hengchang Zang School of Pharmaceutical Sciences Shandong University Wenhuaxi Road 44 Jinan 250012P.R.China School of Basic Medical Sciences Shandong University Wenhuaxi Road 44 Jinan 250012P.R.China Shandong Taibang Biological Products Limited Company No.14 East Hushan Road Taian 271000P.R.China

Human albumin(HA)is a very important blood product which requires strict quality *** precipitation is a key step which has a great effect on the quality of final ***,a new method based on quality by design(QbD)was proposed to investigate thefeasibility of realizing online quality control with the help of near infrared spectroscopy(NIRS)and *** pH value is the critical process parameter(CPP)in acid precipitationprocess,which is used as the end-point *** batches,a total of 74 samples of acidprecipitation process,were simulated in our *** batches were selected randomly as cali-bration set and remaining two batches as validation ***,the analysis based on materialinformation and three dfferent variable selection methods,including interval partial least squaresregression(iPLS),competitive adaptive reweighted sampling(CARS)and correlation coeficient(CC)were compared for eliminating irrelevant variables,Fimally,iPLS was used for *** quantitative model was built up by partial least squares regression(PLSR).Thevalues of determination coeficients(R^(2)_(C) and R^(2)_(P)),root mean squares error of prediction(RMSEP),root mean squares error of calibration(RMSEC)and root mean squared error of crossvalidation(RMSECV)were 0.969,0.953,0.0496,0.0695 and 0.0826,*** paired t test and repeatability test showed that the model had good prediction ability and *** results indicated that PLSR model could give accurate measurement of the pH value.

关键词： Near infrared spectroscopy human albumin acid precipition proces pH value chemometrics

A phenazine anode for high-performance aqueous rechargeable batteries in a wide temperature range

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Nano Research 2020年第3期13卷 676-683页

作者： Tianjiang Sun Chang Liu jiayue wang Qingshun Nian Yazhi Feng Yan Zhang Zhanliang Tao Jun Chen Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China State Key Laboratory of Molecular Reaction Dynamics Dalian Institute of Chemical Physics(DICP)Chinese Academy of SciencesDalian116023China Institute of Molecular Sciences and Engineering Shandong UniversityQingdaoBinhai Road 72Qingdao266237China

Aqueous rechargeable batteries are a possible strategy for large-scale energy storage ***,limited choices of anode materials restrict their further *** we report phenazine(PNZ)as stable anode materials in different alkali-ion(Li+,Na+,K+)electrolyte.A novel full cell is assembled by phenazine anode,Na0.44MnO2 cathode and 10 M NaOH electrolyte to further explore the electrochemical performance of phenazine *** battery is able to achieve high capacity(176.7 mAh·g^−1 at 4 C(1.2·Ag^−1)),ultralong cycling life(capacity retention of 80%after 13,000 cycles at 4 C),and excellent rate capacity(92 mAh·g^−1 at 100 C(30 A·g^−1)).The reaction mechanism of PNZ during charge—discharge process is demonstrated by in situ Raman spectroscopy,in situ Fourier transform infrared(FTIR)spectroscopy,X-ray photoelectron spectroscopy(XPS)and density functional theory(DFT)***,the system is able to successfully operate at wide temperature range from−20 to 70°C and achieves remarkable electrochemical performance.

关键词： aqueous rechargeable batteries phenazine Na0.44MnO2 alkali-ion electrolyte wide temperature

Geographical origin discrimination and polysaccharides quantitative analysis of Radia codonopsis with micro near-infrared spectrometer engine

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Journal of Innovative Optical Health Sciences 2018年第1期11卷 138-148页

作者： jiayue wang Tongtong Li Hailong Yang Tian Hu Lei Nie Fei wang Manel Alcalà Hengchang Zang School of Pharmaceutical Sciences Shandong University Wenhuaxi Road 44Jinan 250012China FOSS(Beijing)Science Technology and Trading Co. Ltd Zhong Guan Cun South StreetBeijing 100081China Department of Chemistry Faculty of Sciences Universitat Autonoma de Barcelona 08193 BellaterraBarcelonaSpain

At present,Tradition Chinese Medicine(TCM)industry in China is in the stage from the empirical development to industrial *** infrared(NIR)spectroscopy has been widely used in the quality control of TCM's modernization with its characteristics incuding rapidness,nondestruction,simplicity,economy,and so *** this study,as one type of a portable micro NIR spectrometer,Micro NIR 1700 was used to establish the qualitative models for identification of geographical region and authenticity of Radix codonopsis based on discriminant analysis(DA)*** of the DA models had better predictive ability with 100%*** addition,a method for rapid quantitative analysis of polysaccharide in Radix codonopsis was also developed based on Micro NIR 1700 spectrometer with partial last-squares(PLS)*** the PLS calibration model,the *** of samples were pretreated with different preprocessing methods and the spectral region was selected with different variable selection methods as *** performance of the final PLS model was evaluated according to correlation cofficient of calibration(Rc),correlation coefficient of prediction(Rp),root mean squared error of cross validation(RMSECV),and root mean squared of prediction(RMSEP).The values of Re,Rp,RMSECV,and RMSEP were 0.9775,0.9602,2.496,and 2.734 g/mL,*** work demonstrated that micro infrared spectrometer could be more convenient and rapid for quality control of Radix codonopsis,and the presented models would be a u1seful reference for quality control of other simi lar raw materials of TCM.

关键词： Tradition Chinese Medicine Micro NIR 170 spectrometer Radir codonopsis

Experimental study on age and gender differences in microscopic movement characteristics of students

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Chinese Physics B 2021年第9期30卷 633-642页

作者： jiayue wang Maik Boltes Armin Seyfried Antoine Tordeux Jun Zhang Wenguo Weng Public Order School People's Public Security University of ChinaBeijing 100038China Center for Capital Social Safety People's Public Security University of ChinaBeijing 100038China Public Security Behavioral Science Laboratory People's Public Security University of ChinaBeijing 100038China Institute for Advanced Simulation Forschungszentrum JülichJülich 52428Germany Faculty of Architecture and Civil Engineering University of WuppertalWuppertal 42119Germany School of Mechanical Engineering and Safety Engineering University of WuppertalWuppertal 42119Germany State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026China Institute of Public Safety Research Department of Engineering PhysicsTsinghua UniversityBeijing 100084China

Campus security has aroused many concerns from the whole *** is one of the most frequent and influential accidents in *** on pedestrian dynamics especially focusing on students are essential for campus security,which are helpful to improve facility design and emergency evacuation *** this paper,primary and middle school students were recruited to participate in the single-file *** microscopic movement characteristics,including walking speed,headway,gait characteristics(step length,step frequency and swaying amplitude)and their relations were *** and gender differences in the headway-speed diagram and space requirements were analyzed by statistical *** results indicated that the impacts of age and gender were *** were three stages for the influence of gender on the headway-speed diagram for both age *** impacts on students'space requirements were consistent for different age and gender *** the impacts of age and gender on free-flow speed were affected by each *** to the connection of walking speed and gait characteristics,the comparisons of gait characteristics between different ages and genders were performed to understand the corresponding differences in speed more *** results showed that differences in step length and swaying amplitude between males and females were significant for both age *** effect of gender on step frequency was significant for primary *** for middle school students,whether gender had significant impact on step frequency was not clear here because of the large ***,the influence of age on gait characteristics changed with gender.

关键词： campus security microscopic movement characteristics pedestrian dynamics single-file movement experiments

ARTC1-mediated VAPB ADP-ribosylation regulates calcium homeostasis

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Journal of Molecular Cell Biology 2023年第7期15卷 1-14页

作者： Xueyao Ma Mengyuan Li Yi Liu Xuefang Zhang Xiaoyun Yang Yun wang Yipeng Li jiayue wang Xiuhua Liu Zhenzhen Yan Xiaochun Yu Chen Wu College of Life Sciences Institute of Life Sciences and Green DevelopmentHebei UniversityBaoding 071002China Department of Public Health Affiliated Hospital of Hebei UniversityBaoding 071000China Westlake Laboratory of Life Sciences and Biomedicine Hangzhou 310024China School of Life Sciences Westlake UniversityHangzhou 310024China Institute of Biology Westlake Institute for Advanced StudyHangzhou 310024China

Mono-ADP-ribosylation(MARylation)is a post-translational modification that regulates a variety of biological processes,including DNA damage repair,cell proliferation,metabolism,and stress and immune *** mammals,MARylation is mainly catalyzed by ADP-ribosyltransferases(ARTs),which consist of two groups:ART cholera toxin-like(ARTCs)and ART diphtheria toxin-like(ARTDs,also known as PARPs).The human ARTC(hARTC)family is composed of four members:two active mono-ADP-ARTs(hARTC1 and hARTC5)and two enzymatically inactive enzymes(hARTC3 and hARTC4).In this study,we systematically examined the homology,expression,and localization pattern of the hARTC family,with a particular focus on *** results showed that hARTC3 interacted with hARTC1 and promoted the enzymatic activity of hARTC1 by stabilizing *** also identified vesicle-associated membrane protein-associated protein B(VAPB)as a new target of hARTC1 and pinpointed Arg50 of VAPB as the ADP-ribosylation ***,we demonstrated that knockdown of hARTC1 impaired intracellular calcium homeostasis,highlighting the functional importance of hARTC1-mediated VAPB Arg50 ADP-ribosylation in regulating calcium *** summary,our study identified a new target of hARTC1 in the endoplasmic reticulum and suggested that ARTC1 plays a role in regulating calcium signaling.

关键词： ATRCs mono-ADP-ribosylation hARTC1 VAPB calcium homeostasis

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微波法制备碳纳米材料的机理及进展

材料导报 2024年第3期38卷 1-6页

作者：王加悦周涵上海交通大学材料科学与工程学院金属基复合材料国家重点实验室上海200240

微波法具有加热快速、易于控制、反应均匀等优点,是制备功能性碳纳米材料的重要技术。其制备原理是基于碳基材料优异的本征介电性能,碳基材料与微波电磁场相互作用产生介电损耗,快速形成局部高能场,实现高速制备。本文首先简要介绍了微... 详细信息

微波法具有加热快速、易于控制、反应均匀等优点,是制备功能性碳纳米材料的重要技术。其制备原理是基于碳基材料优异的本征介电性能,碳基材料与微波电磁场相互作用产生介电损耗,快速形成局部高能场,实现高速制备。本文首先简要介绍了微波与物质的相互作用机理,然后分别从微波在制备过程中的作用、关键实验参数以及微波制备的碳材料的特征等方面详细介绍了微波作为能量输入制备一维碳纳米管、二维石墨烯以及三维纳米多孔碳的优势,最后对宏量快速制备多功能和高性能碳纳米材料的发展进行了展望。

关键词：微波法碳纳米材料碳纳米管石墨烯多孔碳