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Global Energy Interconnection 2023年第1期6卷 92-102页

作者： Ran Wang Yanhe Li Bingtuan Gao School of Electrical Engineering Southeast UniversityNo.2 SipailouNanjing 210096P.R.China State Grid Qinghai Electric Power Company No.89 Shengli StreetXining 810001P.R.China

With the increasing proportion of renewable energy in the power market,the demands on government financial subsidies are gradually increasing.Thus,a joint green certificate-carbon emission right-electricity multi-market trading process is proposed to study the market-based strategy for renewable energy.Considering the commodity characteristics of green certificates and carbon emission rights,the dynamic cost models of green certificates and carbon rights are constructed based on the Rubinstein game and ladder pricing models.Furthermore,considering the irrational bidding behavior of energy suppliers in the actual electricity market,an evolutionary game based multi-market bidding optimization model is presented.Subsequently,it is solved using a composite differential evolutionary algorithm.Finally,the case study results reveal that the proposed model can increase profits and the consumption rate of renewable energy and reduce carbon emission.

关键词： Electricity market Carbon emission right Green certificate Evolutionary game

Non-hepatotropic viral hepatitis and its causative pathogens:The ongoing need for monitoring in children with severe acute hepatitis of unknown etiology

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Pediatric Investigation 2022年第3期6卷 151-155页

作者： Ran Wang Zhengde Xie Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesLaboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children’s HospitalCapital Medical UniversityNational Center for Children’s HealthBeijingChina Research Unit of Critical Infection in Children 2019RU016Chinese Academy of Medical SciencesBeijingChina

ELEVATEDINCIDENCEOFSEVERE ACUTEHEPATITISOFUNKNOWN ETIOLOGYINCHILDRENIN2022 As of June 22,2022,920 probable cases of severe acute hepatitis of unknown etiology had been reported in 33 countries.l The numbers of reporte... 详细信息

关键词： etiology acute hepatitis

End wall effect on particle motion in a chute flow

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Particuology 2021年第1期19卷 102-108页

作者： Ran Wang ran Li Shuaishuai wang Quan Chen Hui Yang School of Optical-Electrical and Computer Engineering University of Shanghai for Science and TechnologyShanghai 200093China School of Medical Instrument and Food Engineering University of Shanghai for Science and TechnologyShanghai 200093China

The influence of the end wall of a chute on the rotation of internal characteristic particles is mainly on the z-axis.A measurement device based on inertial measurement technology does not require the assistance of external information;hence,it is especially suitable for measuring the angular and translational velocities of internal characteristic particles.To study the influence of the end wall of the chute on the motions of the internal characteristic particles,the z-axis rotational and translational velocities of the internal characteristic particles in the chute were measured,and it was found that the rotational velocity about the z-axis differs according to the initial position.The z-axis angular velocity of a characteristic particle at the centre fluctuates near 0,and the average value approaches 0.The z-axis angular velocity of a characteristic particle at the left end wall is typically negative.This phenomenon is due to the influence of the end wall on the rotational motions of particles with initial positions that are near the end wall.In addition,the average translational velocity of the characteristic particles is also affected by the end wall.The distributions of the average z-axis angular velocity and the average translational velocity are quantitatively analysed,and the correlation between the tilt angle of the chute and the end wall effect is studied.

关键词： Chute Particle rotation End wall

Encapsulation of Fe-CoP with P,N-co-doped porous carbon matrix as a multifunctional catalyst for wide electrochemical applications

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Journal of Energy Chemistry 2022年第8期31卷 36-44,I0002页

作者： Yuelong Xu Ran Wang Jingyue wang Yaru Zhang Tifeng Jiao State Key Laboratory of Metastable Materials Science and Technology Yanshan UniversityQinhuangdao 066004HebeiChina Hebei Key Laboratory of Applied Chemistry School of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004HebeiChina Hebei Engineering Research Center for Water Saving in Industry Shijiazhuang 050081HebeiChina nstitute of Energy Resources Hebei Academy of SciencesShijiazhuang 050081HebeiChina

Hydrogen evolution reaction(HER),oxygen evolution reaction(OER),and oxygen reduction reaction(ORR)serve as the most promising electrochemical processes for renewable energy.Developing multifunctional electrocatalysts with high performance for HER,OER and ORR still remains a challenge.Herein,we report a facile method to prepare P,N-co-doped porous carbon encapsulated Fe-CoP(A-FeCoP/CPN)electrocatalyst through freeze drying,carbonization,and KOH activation.The acquired A-FeCoP/CPN possesses abundant pores with large surface area,which provides sufficient defect-rich sites for HER,OER,and ORR,in alkaline or acidic electrolytes.The A-Fe-CoP/CPN shows low overpotential and good stability for HER and OER in alkaline electrolyte.Density functional theory(DFT)computations reveal that the addition of Fe greatly facilitates the rate-determining step and overall catalytic pathway for both HER and OER.A-Fe-CoP/CPN also exhibits low half-wave potential(E1/2)for ORR,which indicates an enhanced performance than that of the noble Pt/C catalyst.Zn-air battery equipped with the A-Fe-CoP/CPN catalyst exhibits a high energy density(849 m Ah g^(-1))and a long-time stability at 5 m A cm^(-2).This finding not only offers a facile strategy to prepare porous carbon materials with defect-rich sites,but also provides guidance for developing multifunctional electrocatalysts for wide electrochemical reactions.

关键词： HER OER ORR Multifunctional electrocatalyst Metal-air battery

The energy performance and passive survivability of high thermal insulation buildings in future climate scenarios

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Building Simulation 2022年第7期15卷 1209-1225页

作者： Ran Wang Shilei Lu Xue Zhai Wei Feng School of Environment Science and Engineering Tianjin University92 Weijin RoadTianjin300072China Tianjin Key Laboratory of Built Environment and Energy Application Tianjin UniversityTianjin300350China Lawrence Berkeley National Laboratory BerkeleyCA 94720USA

Given that the passive performance simulation of buildings based on typical meteorological year data and specific design schemes makes it challenging to respond to climate change and refine design requirements on time,this article established a passive performance prediction model for future buildings considering multi-dimensional variables including climate change,building design,and operational characteristics.For high thermal insulation buildings under future climates,the mild climate zone is more sensitive than the others,cooling energy demand is more sensitive than heating demand,apartments are more sensitive than office buildings,and passive survivability is more sensitive than energy performance;for buildings of the same type located in the same climate zone,thermal design solutions determine the increase rate of cooling demand.The potential benefits of climate warming on heating demand reduction are almost zero,but the cooling demand increases significantly,with apartments and office buildings increasing up to 22.1% and 5.0%,respectively.Buildings generally overheat in the future,and the increase rate of the mild zone far exceeds other zones with duration and severity being 3004.8% and 877.7%for apartments,and 884.3% and 288.9%for office buildings,respectively.

关键词： climate change overheating risk cooling demand heating demand scenarios thermal insulation

Intensified shape selectivity and alkylation reaction for the two-step conversion of methanol aromatization to p-xylene

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中国化学工程学报:英文版 2023年第7期59卷 240-250页

作者： Tingjun Fu Ran Wang Kun Ren Liangliang Zhang Zhong Li State Key Laboratory of Clean and Efficient Coal Utilization College of Chemical Engineering and TechnologyTaiyuan University of TechnologyTaiyuan 030024China

Two-step conversion of methanol to aromatics via light hydrocarbons can significantly improve the conversion stability compared with direct aromatization of methanol,but it remains a challenge to achieve a high p-xylene(PX)selectivity.Herein,silica coating was firstly used to passivate external acid sites of ZSM-5 catalyst for the aromatization of light hydrocarbons by the chemical liquid deposition method.With the increase of SiO_(2) deposition,the density of the external acid sites of the catalyst was decreased from 0.1 to 0.03 mmol·g^(-1),which inhibited the surface secondary reactions and increased the PX/X from 34.6% to 60.0%.In view of the fact that the aromatization process in the second step was partly inhibited as methanol was consumed in advance in the upper methanol-to-light hydrocarbons catalyst layer,part of methanol was directly introduced into the lower aromatization catalyst layer to promote the alkylation process during the aromatization,which decreased the toluene selectivity from 34.5% to 14.3% but increased the xylene selectivity from 40.0%to 55.3%.It was also found that an appropriate external acid density was needed for aromatization catalyst to strengthen the alkylation process and improve the selectivity of xylene under the conditions of methanol introduction.

关键词： Methanol to aromatics Two-step conversion Para-xylene Zeolite Silica Catalysis

Structural insights into the functions of Raf1 and Bsd2 in hexadecameric Rubisco assembly

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Molecular Plant 2023年第12期16卷 1927-1936页

作者： Ran Wang Hui Song Wenjuan Zhang Ning wang Shijia Zhang Ruiqi Shao Cuimin Liu State Key Laboratory of Plant Cell and Chromosome Engineering Institute of Genetics and Developmental BiologyThe Innovative Academy of Seed DesignChineseAcademyof SciencesBeijing100101China University of Chinese Academy of Sciences Bejing 100101China

Hexadecameric formI Rubisco,which consisting consists of eight large(RbcL)and eight small(RbcS)subunits,is the most abundant enzyme on earth.Extensive efforts to engineer an improved Rubisco to speed up its catalytic efficiency and ultimately increase agricultural productivity.However,difficulties with correct folding and assembly in foreign hosts or in vitro have hampered the genetic manipulation of hexadecameric Rubisco.In this study,we reconstituted Synechococcus sp.Pcc6301 Rubisco in vitro using the chaperonin system and assembly factors from cyanobacteria and Arabidopsis thaliana(At).Rubisco holoenzyme was produced in the presence of cyanobacterial Rubisco accumulation factor 1(Raf1)alone or both AtRaf1 and bundle-sheath defective-2(AtBsd2)from Arabidopsis.RbcL released from GroEL is assembly capable in the presence of ATP,and AtBsd2 functions downstream of AtRaf1.Cryo-EM structures of RbcL8-AtRaf18,RbcL8-AtRaf14-AtBsd2s,and RbcLs revealed that the interactions between RbcL and AtRaf1 are looser than those between prokaryotic RbcL and Raf1,with AtRaf1 tilting 7°farther away from RbcL.AtBsd2 stabilizes the flexible regions of RbcL,including the N and C termini,the 60s loop,and loop 6.Using these data,combined with previous findings,we propose the possible biogenesis pathways of prokaryotic and eukaryotic Rubisco.

关键词： Rubisco chaperone protein folding protein assembly assembly factor

Large deviation principle of occupation measures for non-linear monotone SPDEs

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Science China Mathematics 2021年第4期64卷 799-822页

作者： Ran Wang Jie Xiong Lihu Xu School of Mathematics and Statistics Wuhan UniversityWuhan 430072China Department of Mathematics and International Center for Mathematics Southern University of Science and TechnologyShenzhen 518055China Department of Mathematics Faculty of Science and TechnologyUniversity of MacaoMacaoChina

Using the hyper-exponential recurrence criterion,we establish the occupation measures’large deviation principle for a class of non-linear monotone stochastic partial differential equations(SPDEs)driven by Wiener noise,including the stochastic p-Laplace equation,the stochastic porous medium equation and the stochastic fast-diffusion equation.We also propose a framework for verifying hyper-exponential recurrence,and apply it to study the large deviation problems for strong dissipative SPDEs.These SPDEs can be stochastic systems driven by heavy-tailedα-stable process.

关键词： stochastic partial differential equation large deviation principle occupation measure hyperexponential recurrence

Epidemiological characteristics and disease burden of infectious mononucleosis in hospitalized children in China:A nationwide retrospective study

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Virologica Sinica 2022年第5期37卷 637-645页

作者： Mengjia Liu Xinyu wang Linlin Zhang Guoshuang Feng Yueping Zeng Ran Wang Zhengde Xie Beijing Key Laboratory of Pediatric Respiratory Infectious Diseases Key Laboratory of Major Diseases in ChildrenMinistry of EducationNational Clinical Research Center for Respiratory DiseasesLaboratory of Infection and VirologyBeijing Pediatric Research InstituteBeijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing100045China Research Unit of Critical Infection in Children 2019RU016Chinese Academy of Medical SciencesBeijingChina Big Data Center Beijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing100045China Medical Record Management Office Beijing Children's HospitalCapital Medical UniversityNational Center for Children's HealthBeijing100045China

Epstein-Barr virus(EBV)is very common,with the infection rate in adults over 90%worldwide.Infectious mononucleosis(IM)is caused by primary infection with EBV.Most IM patients are generally considered to have a favorable prognosis,but a few patients will also develop complications.Children with severe symptoms will require hospitalization.However,the disease burden of children hospitalized with IM in China has been rarely described.In this study,we included the Face sheets of discharge medical records from 27 member children's hospitals of Futang Research Center of Pediatric Development from Jan 1st,2016 to Dec 31st,2020,and medical information such as gender,age,region,time of admission,length of stay and expenditure were extracted.There were 24,120 IM cases,which accounted for 0.42%(24,120/5,693,262)of all hospitalized cases during this period.The ratio of male to female was 1.48:1.Hospitalization for IM in the 4-6 years age group was the highest among inpatients of all age groups.Case numbers increased year by year between 2016 and 2020,and the monthly hospitalization was generally high from Jul to Sep but reduced from Jan to Feb per year.Bronchitis/pneumonia and hepatic dysfunction were two common complications in hospitalized IM patients.The median length of stay was 8 days,and the median cost of hospitalization was 970.59 US dollars.This study will help understand the epidemiological characteristics and disease burden of hospitalized children with IM in China.

关键词： Epstein-Barr virus(EBV) Infectious mononucleosis(IM) Children Epidemiological characteristics Disease burden

New role of α phase in the fracture behavior and fracture toughness of a β-type bio-titanium alloy

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International Journal of Minerals,Metallurgy and Materials 2023年第9期30卷 1756-1763页

作者： Ran Wang Xiu Song Lei wang Yang Liu Mitsuo Niinomi Deliang Zhang Jun Cheng Key Laboratory for Anisotropy and Texture of Materials(Ministry of Education)School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Institute for Materials Research Tohoku University2-1-1 KatahiraAoba-kuSendai 980-8577Japan Meijo University 1-501 ShiogamaguchiTempaku-kuNagoya 468-8502Japan Nagoya University Furo-choChikusa-kuNagoya 464-8601Japan Shaanxi Key Laboratory of Biomedical Metal Materials Northwest Institute for Nonferrous Metal ResearchXi’an 710016China

The role of α precipitates formed during aging in the fracture toughness and fracture behavior of β-type bio-titanium alloy Ti–29Nb–13Ta–4.6Zr(TNTZ) was studied. Results showed that the fracture toughness of the TNTZ alloy aged at 723 K decreases to the minimum of 72.07–73.19 kJ·m^(-2)when the aging time is extended to 4–8 h and then gradually increases and reaches 144.89 kJ·m^(-2)after 72 h. The decrease in fracture toughness within the aging time of 4–8 h is caused by the large stress concentration at the tip of acicular α precipitates with a high aspect ratio and the preferential crack propagation along the inhomogeneous acicular α precipitates distributed in “V-shape” and “nearly perpendicular shape”. When the aging time is extended to 8–72 h, the precrack tip is uniformly blunted, and the crack is effectively deflected by α precipitates with multi long axis directions, more high homogeneity, low aspect ratio, and large number density. Analysis of the effect of αprecipitates on the fracture behavior suggested that the number of long axis directions of α precipitates is the key controlling factor for the fracture behavior and fracture toughness of the TNTZ alloy aged for different times.

关键词： fracture toughness Ti-29Nb-13Ta-4.6Zr alloy agedαphase crack tip blunting