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Zn Anode-Based Electrochromic Devices:Progress&Challenges 认领 引用 被引量：1
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作者 Bingkun Huang Feifei Zhao +6 位作者 Pengcheng Liu Yukai Xu Bin Wang Jiaqi Yang Jingwei Chen Haizeng Li William W.Yu 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2026年第1期15-33,共19页
Unlike conventional electrochromic devices,Zinc anode-based electrochromic devices(ZECDs)ensure excellent charge balance between the electrochromic layer and Zn anode during the coloring/bleaching by reversible metal ... Unlike conventional electrochromic devices,Zinc anode-based electrochromic devices(ZECDs)ensure excellent charge balance between the electrochromic layer and Zn anode during the coloring/bleaching by reversible metal deposition/stripping on the Zn anode.Meanwhile,the inherent potential difference between the metal anode and the electrochromic layer can drive the spontaneous coloration/bleaching of ZECDs,featuring energy retrieval functionality.This review discusses the working mechanisms,performance indexes of ZECDs,and the impact of material selection on ZECD performance.Furthermore,we comprehensively summarize the latest research progress of ZECDs in energy storage,smart windows,and multicolor displays.We argue that using high-transparency zinc mesh,additive manufacturing processes,and self-healing electrochromic materials can significantly advance the commercialization of large-area ZECDs.Finally,“electrode-free”device structures,renewable or replaceable electrolytes,and strategies to suppress zinc dendrites are prospected to overcome cost-effectiveness and lifespan issues of ZECDs.This review aims at enabling more efficient and advanced ZECDs for multifunctional applications. 展开更多
关键词 electrochromic devices energy storage multicolor displays smart windows zinc anode
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The relative role of regional species pools in determining tree species richness and rarity in Chinese subtropical and tropical forests 认领 引用
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作者 Houjuan Song Borja Jiménez-Alfaro +23 位作者 Yongchang Song Jens-Christian Svenning Alejandro Ordonez Oukai Zhang Xihua Wang Enrong Yan Kun Song Luxiang Lin Shengbin Chen Qingpei Yang Buhang Li Chuping Wu Bo Jiang Chao Jin Zhiming Zhang Yi Ding Huilin Wan Kankan Shang Kunfang Cao Wei Shi Xin Wang Xiaoran Wang Pengcheng Liu Jian Zhang 《Plant Diversity》 SCIE CAS CSCD 2026年第2期340-350,共11页
The species pool hypothesis argues that local species diversity mainly depends on regional diversity,which is influenced by dispersal,historical and current environmental conditions.We hypothesize that regional factor... The species pool hypothesis argues that local species diversity mainly depends on regional diversity,which is influenced by dispersal,historical and current environmental conditions.We hypothesize that regional factors,such as the size of the regional species pool,current climate,topographical variability,and historical climate stability,also impact local species-abundance patterns,like the rarity of local species,though their specific effects are not yet well understood.Analyzing data from 3307 species across 3923 forest plots in Chinese subtropical and tropical regions,we employed boosted regression trees and structural equation modeling to assess the roles of regional species pool size along with climatic seasonality,topography,and soil factors,in shaping local richness and rarity.We found that local tree species richness declined with increasing latitude,while species rarity decreased from west to east.The factors such as current regional environment,paleoclimate stability,and human disturbance significantly affected local richness and rarity,primarily through their effects on regional species pool size.The impacts of regional mean temperature and elevational range on local richness surpassed local influences.Conversely,local climatic seasonality exerted the strongest influence on species rarity,followed by human activity.Overall,the findings indicate that regions with large regional species pools tend to support diverse communities with high proportions of rare species. 展开更多
关键词 Habitat heterogeneity Climatic stability Regional effect Species pool Species rarity
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Modulating d-d orbitals coupling in PtPdCu medium-entropy alloy aerogels to boost pH-general methanol electrooxidation performance 认领 引用 被引量：7
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作者 Kaili Wang Pengcheng Liu +7 位作者 Mingzhe Wang Tianran Wei Jitao Lu Xingling Zhao Zaiyong Jiang Zhimin Yuan Xijun Liu Jia He 《Chinese Chemical Letters》 SCIE CAS CSCD 2025年第4期221-228,共8页
Unraveling the essence of electronic structure effected by d-d orbital coupling of transition metal and methanol oxidation reaction(MOR)performance can fundamentally guide high efficient catalyst design.Herein,density... Unraveling the essence of electronic structure effected by d-d orbital coupling of transition metal and methanol oxidation reaction(MOR)performance can fundamentally guide high efficient catalyst design.Herein,density functional theory(DFT)calculations were performed at first to study the d–d orbital interaction of metallic Pt Pd Cu,revealing that the incorporation of Pd and Cu atoms into Pt system can enhance d-d electron interaction via capturing antibonding orbital electrons of Pt to fill the surrounding Pd and Cu atoms.Under the theoretical guidance,Pt Pd Cu medium entropy alloy aerogels(Pt Pd Cu MEAAs)catalysts have been designed and systematically screened for MOR under acid,alkaline and neutral electrolyte.Furthermore,DFT calculation and in-situ fourier transform infrared spectroscopy analysis indicate that Pt Pd Cu MEAAs follow the direct pathway via formate as the reactive intermediate to be directly oxidized to CO2.For practical direct methanol fuel cells(DMFCs),the Pt Pd Cu MEAAs-integrated ultra-thin catalyst layer(4–5μm thickness)as anode exhibits higher peak power density of 35 m W/cm2 than commercial Pt/C of 20 m W/cm2(~40μm thickness)under the similar noble metal loading and an impressive stability retention at a 50-m A/cm2 constant current for 10 h.This work clearly proves that optimizing the intermediate adsorption capacity via d-d orbital coupling is an effective strategy to design highly efficient catalysts for DMFCs. 展开更多
关键词 Medium-entropy alloys aerogels d-d Orbitals coupling pH-general Methanol oxidation reaction Ultra-thin catalyst layer
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Perspective on the operando battery monitoring of multi-parameter by embedded optical fiber sensors 认领 引用 被引量：2
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作者 Jun Guo Pengcheng Liu +11 位作者 Fu Xue Jie Zeng Xinyue Mu Feier Wang Zhihan Kong Dingwei Ji Heng Zhou Longbiao Yu Qi Wu Kang Yan Jing Wang Kongjun Zhu 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第11期899-919,I0020,共21页
Battery safety has emerged as a critical challenge for achieving carbon neutrality,driven by the increasing frequency of thermal runaway incidents in electric vehicles(EVs)and stationary energy storage systems(ESSs).C... Battery safety has emerged as a critical challenge for achieving carbon neutrality,driven by the increasing frequency of thermal runaway incidents in electric vehicles(EVs)and stationary energy storage systems(ESSs).Conventional battery monitoring technologies struggle to track multiple physicochemical parameters in real time,hindering early hazard detection.Embedded optical fiber sensors have gained prominence as a transformative solution for next-generation smart battery sensing,owing to their micrometer size,multiplexing capability,and electromagnetic immunity.However,comprehensive reviews focusing on their advancements in operando multi-parameter monitoring remain scarce,despite their critical importance for ensuring battery safety.To address this gap,this review first introduces a classification and the fundamental principles of advanced battery-oriented optical fiber sensors.Subsequently,it summarizes recent developments in single-parameter battery monitoring using optical fiber sensors.Building on this foundation,this review presents the first comprehensive analysis of multifunctional optical fiber sensing platforms capable of simultaneously tracking temperature,strain,pressure,refractive index,and monitoring battery aging.Targeted strategies are proposed to facilitate the practical development of this technology,including optimization of sensor integration techniques,minimizing sensor invasiveness,resolving the cross-sensitivity of fiber Bragg grating(FBG)through structural innovation,enhancing techno-economics,and combining with artificial intelligence(AI).By aligning academic research with industry requirements,this review provides a methodological roadmap for developing robust optical sensing systems to ensure battery safety in decarbonization-driven applications. 展开更多
关键词 Battery safety Multi-parameter monitoring Embedded optical fiber sensors Operando sensing
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Biogeographic affinitypartly shapes woody plant diversity along an elevational gradient in subtropical forests 认领 引用 被引量：1
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作者 Zhaochen Zhang Fang Wang +13 位作者 Xiaoran Wang Mufan Sun Pu Zheng Jingchao Zhao Junhong Chen Min Guan Pengcheng Liu Xiaofan Shang Yaoshun Lu Qingpei Yang Qingni Song Lin Chen Quying Zhong Jian Zhang 《Plant Diversity》 SCIE CAS CSCD 2025年第5期784-792,共9页
The ecological and evolutionary mechanisms underlying montane biodiversity patterns remain unresolved.To understand which factors determined community assembly rules in mountains,biogeographic affinity that represents... The ecological and evolutionary mechanisms underlying montane biodiversity patterns remain unresolved.To understand which factors determined community assembly rules in mountains,biogeographic affinity that represents the biogeographic and evolutionary history of species should incorporate with current environments.We aim to address two following questions:1)How does plant taxonomic and phylogenetic diversity with disparate biogeographic affinitiesvary along the subtropical elevational gradient?2)How do biogeographic affinityand environmental drivers regulate the community assembly?We collected woody plant survey data of 32 forest plots in a subtropical mountain of Mt.Guanshan with typical transitional characteristics,including 250 woody plant species belonging to 56 families and 118 genera.We estimated the effects of biogeographic affinity,climate and soil properties on taxonomic and phylogenetic diversity of plant communities employing linear regression and structural equation models.We found that the richness of temperate-affiliated species increased with elevations,but the evenness decreased,while tropical-affiliatedspecies had no significantpatterns.Winter temperature directly or indirectly via biogeographic affinityshaped the assemblage of woody plant communities along elevations.Biogeographic affinityaffected what kind of species could colonize higher elevations while local environment determined their fitnessto adapt.These results suggest that biogeographic affinityand local environment jointly lead to the dominance of temperate-affiliated species at higher elevations and shape the diversity of woody plant communities along elevational gradients.Our findingshighlight the legacy effect of biogeographic affinityon the composition and structure of subtropical montane forests. 展开更多
关键词 Taxonomic diversity Phylogenetic diversity Biogeographic affinity Cold tolerance Phylogenetic niche conservatism
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Selenate-based heterojunction with cobalt-nickel paired site for electrocatalytic oxidation of 5-hydroxymethylfurfural coupling water splitting to produce hydrogen 认领 引用 被引量：1
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作者 Zhengru Yang Jia Hui +4 位作者 Wangxi Fan Pengcheng Liu Chunyong Zhang Shuang Dong Zhou Yang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2025年第2期156-162,I0005,共7页
It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H2)production.However,the electrocatalysts for elec... It is very appealing that 5-hydroxymethylfurfural(HMF)is electrocatalytical oxidized as 2,5-furandicarboxylic acid(FDCA)linking to non-classical cathodic hydrogen(H2)production.However,the electrocatalysts for electrocatalytic HMF oxidative reaction(e-HMFOR)have been facing low Faradaic efficiency(FE)and high water splitting voltage.Herein,we propose a strategy of the NiSeO3@(CoSeO3)4heterojunction by constructing a Co-Ni paired site,where the Co site is in charge of adsorbing for HMF while the electrons are transferred to the Ni site,thus giving the NiSeO3@(CoSeO3)4heterojunction superior electrocata lytic performances for e-HMFOR and water splitting.By optimizing conditions,the NiSeO3@(CoSeO3)4heterojunction has high conversion of 99.7%,high selectivity of 99.9%,and high FE of 98.4%at 1.3 V,as well as low cell voltage of 1.31 V at 10 mA cm-2in 1 M KOH+0.1 M HMF.This study offers a potential insight for e-HMFOR to high value-added FDCA coupling water splitting to produce H2in an economical manner. 展开更多
关键词 e-HMFOR FDCA Co-Ni paired site Heterojunction Hydrogen evolution
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Editorial for a special issue on emerging materials for carbon neutrality 认领 引用
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作者 Pengcheng Liu Guiyin Xu Weijin Li 《Nano Materials Science》 EI CAS CSCD 2025年第6期727-728,共2页
Excessive emissions of greenhouse gases such as carbon dioxide have led to global climate change,which poses one of the greatest threats to human survival in the 21st century.The urgent need to achieve carbon neutrali... Excessive emissions of greenhouse gases such as carbon dioxide have led to global climate change,which poses one of the greatest threats to human survival in the 21st century.The urgent need to achieve carbon neutrality to mitigate climatic issues has stimulated the rapid development of advanced materials and technologies for clean energy conversion and efficient storage.In recent years,a series of remarkable advances have emerged,revealing innovative materials and strategies that significantly accelerate the transition toward sus-tainable energy solutions.In this context,this special issue presents ten high-quality contributions,including seven comprehensive reviews and three original research articles[1-10],focusing on the latest ad-vances and frontier research in advanced materials and technologies toward carbon neutrality.Collectively,these works highlight the latest progress in catalytic energy conversion,photovoltaic technologies,and electrochemical energy storage,providing valuable insights to guide future efforts in the design of carbon-neutral materials and sustainable energy systems. 展开更多
关键词 carbon neutrality carbon dioxide greenhouse gases advanced materials technologies clean energy conversion climate changewhich efficient storagein
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Stable sodium anodes for sodium metal batteries(SMBs) enabled by in-situ formed quasi solid-state polymer electrolyte 认领 引用 被引量：6
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作者 Jian Ma Xuyong Feng +7 位作者 Yueyue Wu Yueda Wang Pengcheng Liu Ke Shang Hao Jiang Xianglong Hou David Mitlin Hongfa Xiang 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2023年第2期290-299,I0008,共10页
A high-performance quasi-solid polymer electrolyte for sodium metal batteries(SMBs)based on in-situ polymerized poly(1,3-dioxolane)(DOL)with 20%volume ratio of fluoroethylene carbonate(FEC),termed"PDFE-20",i... A high-performance quasi-solid polymer electrolyte for sodium metal batteries(SMBs)based on in-situ polymerized poly(1,3-dioxolane)(DOL)with 20%volume ratio of fluoroethylene carbonate(FEC),termed"PDFE-20",is proposed in this work.It is demonstrated PDFE-20 possesses a room-temperature ionic conductivity of 3.31×10-3 S cm-1,an ionic diffusion activation energy of 0.10 eV,and an oxidation potential of 4.4 V.SMBs based on PDFE-20 and Na3V2(PO4)3(NVP)cathodes were evaluated with an active material mass loading of 6.8 mg cm-2.The cell displayed an initial discharge specific capacity of 104 mA h g-1,and97.1%capacity retention after 100 cycles at 0.5 C.In-situ polymerization conformally coats the anode/-cathode interfaces,avoiding geometrical gaps and high charge transfer resistance with ex-situ polymerization of the same chemistry.FEC acts as a plasticizer during polymerization to suppress crystallization and significantly improves ionic transport.During battery cycling FEC promotes mechanical congruence of electrolyte-electrode interfaces while forming a stable NaF-rich solid electrolyte interphase(SEI)at the anode.Density functional theory(DFT)calculations were also performed to further understand the role FEC in the poly(DOL)-FEC electrolytes.This work broadens the application of in-situ prepared poly(DOL)electrolytes to sodium storage and demonstrates the crucial role of FEC in improving the electrochemical performance. 展开更多
关键词 Quasi-solid batteries(QSBs) Quasi-solid electrolytes(QSEs) NaF-rich passivating layer Interfacial stability Sodium metal batteries(SMBs)
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Changing predominance of norovirus strains in children with acute gastroenteritis in Shanghai,2018–2021 认领 引用 被引量：6
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作者 Lijuan Lu Yuanyun Ao +6 位作者 Ran Jia Huaqing Zhong Pengcheng Liu Menghua Xu Liyun Su Lingfeng Cao Jin Xu 《Virologica Sinica》 SCIE CAS CSCD 2023年第5期671-679,共9页
Norovirus(NoV)is a major pathogen that causes acute gastroenteritis(AGE)in people of all ages,especially in children.In this study,we investigated the molecular epidemiological characteristics of NoV in children with ... Norovirus(NoV)is a major pathogen that causes acute gastroenteritis(AGE)in people of all ages,especially in children.In this study,we investigated the molecular epidemiological characteristics of NoV in children with AGE in Shanghai from 2018 to 2021.The overall detection rate of NoV was 11.9%(181/1545),with annual detection rates of 9.4%(36/381),13.6%(29/213),5.8%(13/226)and 14.2%(103/725),respectively.Of note,the prevalence of NoV in 2020 was significantly lower than that in 2018-2019(10.9%,65/594)(P=0.023)and 2021(14.2%,103/725)(P=0.000).The 181 NoV strains identified in this study were classified into the GI group(1.1%,2/181),GII group(98.3%,178/181)and GIX group(0.6%,1/181)according to the VP1 gene.The most common NoV VP1 genotype was GII.4 Sydney_2012(63.5%,115/181),followed by GII.3(19.9%,36/181)and GII.2(9.4%,17/181).For P genotypes,174 strains were sequenced successfully according to the RdRp gene,and the predominant genotype was GII.P16(44.8%,78/174),followed by GII.P31(25.9%,45/174)and GII.P12(21.3%,37/174).Among the 174 cases,GII.4 Sydney_2012[P16](36.8%,64/174)was the dominant genotype,followed by GII.4 Sydney_2012[P31](25.3%,44/174),GII.3[P12](20.1%,35/174)and GII.2[P16](8.0%,14/174).In particular,the dominant genotypes in Shanghai changed from GII.4 Sydney_2012[P31]in 2018-2019 to GII.4 Sydney_2012[P16]in 2020-2021.This is the first report to describe the epidemiological changes in NoV infection before and during the COVID-19 pandemic in Shanghai.These data highlight the importance of continuous surveillance for NoV in children with AGE in Shanghai. 展开更多
关键词 Norovirus(NoV) Acute gastroenteritis Children Genotype Recombination
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Lithium storage properties of Ti3C2Tx(Tx= F,Cl,Br) MXenes 认领 引用 被引量：7
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作者 Pengcheng Liu Peng Xiao +3 位作者 Ming Lu Hui Wang Na Jin Zifeng Lin 《Chinese Chemical Letters》 SCIE CAS CSCD 2023年第4期551-554,共4页
In this work, Ti3C2TxMXene with-F,-Cl and-Br surface terminations are synthesized and the effect of these halogen terminations on the lithium storage properties is investigated. A maximum Li+storage capacity of 189... In this work, Ti3C2TxMXene with-F,-Cl and-Br surface terminations are synthesized and the effect of these halogen terminations on the lithium storage properties is investigated. A maximum Li+storage capacity of 189 m Ah/g is achieved with Ti3C2BrxMXene much higher than Ti3C2Clxand Ti3C2Fxwith 138 m Ah/g and 123 m Ah/g, respectively. Density functional theory(DFT) calculation shows that the adsorption formation energy of halogen atoms on Ti atoms follows the trend of Ti-F > Ti-Cl > Ti-Br, leading to the same trend in the content of terminations on corresponding MXenes. In addition, inevitable exposure of MXene to oxygen causes competition between halogen and oxygen. Theoretical results show Ti3C2BrxMXene has the highest Ti to O ratio and the lowest Ti to Br ratio, the high lithium affinity of O explains the maximum Li-ion storage capacity with Ti3C2BrxMXene. This work shed light on the opportunity for achieving improved lithium storage properties of MXene electrodes by regulating the surface chemistry. 展开更多
关键词 MXene Molten salt synthesis Halogen termination Li+storage Electrochemistry
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Recent Developments of Modulation and Control for High-Power Current-Source-Converters Fed Electric Machine Systems 认领 引用 被引量：5
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作者 Pengcheng Liu Zheng Wang +2 位作者 Sanmin Wei Yuwen Bo Shaoning Pu 《CES Transactions on Electrical Machines and Systems》 CSCD 2020年第3期215-226,共12页
The pulse-width-modulated(PWM)current-source converters(CSCs)fed electric machine systems can be considered as a type of high reliability energy conversion systems,since they work with the long-life DC-link inductor a... The pulse-width-modulated(PWM)current-source converters(CSCs)fed electric machine systems can be considered as a type of high reliability energy conversion systems,since they work with the long-life DC-link inductor and offer high fault-tolerant capability for short-circuit faults.Besides,they provide motor friendly waveforms and four-quadrant operation ability.Therefore,they are suitable for high-power applications of fans,pumps,compressors and wind power generation.The purpose of this paper is to comprehensively review recent developments of key technologies on modulation and control of high-power(HP)PWM-CSC fed electric machines systems,including reduction of low-order current harmonics,suppression of inductor–capacitor(LC)resonance,mitigation of common-mode voltage(CMV)and control of modular PWM-CSC fed systems.In particular,recent work on the overlapping effects during commutation,LC resonance suppression under fault-tolerant operation and collaboration of modular PMW-CSCs are described.Both theoretical analysis and some results in simulations and experiments are presented.Finally,a brief discussion regarding the future trend of the HP CSC fed electric machines systems is presented. 展开更多
关键词 Current source converter(CSC) high power(HP)applications electric machine system inductor–capacitor(LC)resonance low-order current harmonics common-mode voltage(CMV) modulation control
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Prediction of Mechanical Properties of Structural Bamboo and Its Relationship with Growth Parameters 认领 引用 被引量：3
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作者 Pengcheng Liu Ping Xiang +3 位作者 Qishi Zhou Hai Zhang Jiefu Tian Misganu Demis Argaw 《Journal of Renewable Materials》 SCIE EI CAS 2021年第12期2223-2239,共17页
Bamboo is a renewable natural building material with good mechanical properties.However,due to the heterogeneity and anisotropy of bamboo stalk,a large amount of material performance testing costs are required in engi... Bamboo is a renewable natural building material with good mechanical properties.However,due to the heterogeneity and anisotropy of bamboo stalk,a large amount of material performance testing costs are required in engineering applications.In this work,longitudinal compression,bending,longitudinal shear,longitudinal tensile,transverse compression and transverse tensile tests of bamboo materials are conducted,considering the influence of the bamboo nodes.The mechanical properties of the whole bamboo stalk with the wall thickness and outer circumference are explored.Through univariate and multiple regression analysis,the relationship between mechanical properties and wall thickness and perimeter is fitted,and the conversion parameters between different mechanical properties are derived.The research results show that the transverse compressive strength of nodal specimen,and transverse tensile strength of nodal and inter-node specimens increase with the increase of wall thickness and outer circumference,but other mechanical properties decrease with the increase of wall thickness and outer circumference.The prediction formula and conversion parameters of bamboo mechanical properties proposed in this research have high applicability and accuracy.Moreover,this research can provide references for the evaluation of bamboo performance and saving test costs. 展开更多
关键词 Bamboo mechanical properties wall thickness outer circumference performance prediction
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LMM5.1 and LMM5.4,two eukaryotic translation elongation factor 1Alike gene family members,negatively affect cell death and disease resistance in rice 认领 引用 被引量：14
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作者 Jiying Zhao Pengcheng Liu +4 位作者 Chunrong Li Yanyan Wang Lequn Guo Guanghuai Jiang Wenxue Zhai 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2017年第2期107-118,共12页
Lesion mimic mutant（LMM） genes, stimulating lesion formation in the absence of pathogens, play significant roles in immune response. In this study, we characterized a rice lesion mimic mutant, lmm5,which displayed l... Lesion mimic mutant（LMM） genes, stimulating lesion formation in the absence of pathogens, play significant roles in immune response. In this study, we characterized a rice lesion mimic mutant, lmm5,which displayed light-dependent spontaneous lesions. Additionally, lmm5 plants exhibited enhanced resistance to all of the tested races of Magnaporthe oryzae and Xanthomonas oryzae pv. oryzae（Xoo） by increasing the expression of defense-related genes and the accumulation of hydrogen peroxide. Genetic analysis showed that the lesion mimic phenotype of lmm5 was controlled by two genes, lmm5.1 and lmm5.4, which were isolated with a map-based cloning strategy. Remarkably, LMM5.1 and LMM5.4 share a 97.4% amino acid sequence identity, and they each encode a eukaryotic translation elongation factor 1A（e EF1A）-like protein. Besides, LMM5.1 and LMM5.4 were expressed in a tissue-specific and an indicaspecific manner, respectively. In addition, high-throughput m RNA sequencing analysis confirmed that the basal immunity was constitutively activated in the lmm5 mutant. Taken together, these results suggest that the homologous e EF1A-like genes, LMM5.1 and LMM5.4, negatively affect cell death and disease resistance in rice. 展开更多
关键词 Lesion mimic eEF1A-like gene Cell death Disease resistance Rice
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Mild Cytokine Elevation, Moderate CD4^+ T Cell Response and Abundant Antibody Production in Children with COVID-19 认领 引用 被引量：2
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作者 Ran Jia Xiangshi Wang +7 位作者 Pengcheng Liu Xiaozhen Liang Yanling Ge He Tian Hailing Chang Hao Zhou Mei Zeng Jin Xu 《Virologica Sinica》 SCIE CAS CSCD 2020年第6期734-743,共10页
Children with Coronavirus Disease 2019(COVID-19) were reported to show milder symptoms and better prognosis than their adult counterparts, but the difference of immune response against SARS-CoV-2 between children and ... Children with Coronavirus Disease 2019(COVID-19) were reported to show milder symptoms and better prognosis than their adult counterparts, but the difference of immune response against SARS-CoV-2 between children and adults hasn’t been reported. Therefore we initiated this study to figure out the features of immune response in children with COVID-19.Sera and whole blood cells from 19 children with COVID-19 during different phases after disease onset were collected.The cytokine concentrations, SARS-CoV-2 S-RBD or N-specific antibodies and T cell immune responses were detected respectively. In children with COVID-19, only 3 of 12 cytokines were increased in acute sera, including interferon(IFN)-cinduced protein 10(IP10), interleukin(IL)-10 and IL-16. We observed an increase in T helper(Th)-2 cells and a suppression in regulatory T cells(Treg) in patients during acute phase, but no significant response was found in the IFN-cproducing or tumor necrosis factor(TNF)-a-producing CD8?T cells in patients. S-RBD and N IgM showed an early induction, while S-RBD and N IgG were prominently induced later in convalescent phase. Potent S-RBD IgA response was observed but N IgA seemed to be inconspicuous. Children with COVID-19 displayed an immunophenotype that is less inflammatory than adults, including unremarkable cytokine elevation, moderate CD4?T cell response and inactive CD8?T cell response, but their humoral immunity against SARS-CoV-2 were as strong as adults. Our finding presented immunological characteristics of children with COVID-19 and might give some clues as to why children develop less severe disease than adults. 展开更多
关键词 COVID-19 SARS-CoV-2 Cytokine T cell immune response Antibody dynamics
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Rate transient analysis methods for water-producing gas wells in tight reservoirs with mobile water 认领 引用 被引量：1
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作者 Qingyan Yu Ying Jia +2 位作者 Pengcheng Liu Xiangyang Hu Shengye Hao 《Energy Geoscience》 EI 2024年第1期311-320,共10页
Tight gas reservoirs with mobile water exhibit multi-phase flow and high stress sensitivity.Accurately analyzing the reservoir and well parameters using conventional single-phase rate transient analysis methods proves... Tight gas reservoirs with mobile water exhibit multi-phase flow and high stress sensitivity.Accurately analyzing the reservoir and well parameters using conventional single-phase rate transient analysis methods proves challenging.This study introduces novel rate transient analysis methods incorporating evaluation processes based on the conventional flowing material balance method and the Blasingame type-curve method to examine fractured gas wells producing water.By positing a gas-water two-phase equivalent homogenous phase that considers characteristics of mobile water,gas,and high stress sensitivity,the conventional single-phase rate transient analysis methods can be applied by integrating the phase's characteristics and defining the phase's normalized parameters and material balance pseudotime.The rate transient analysis methods based on the equivalent homogenous phase can be used to quantitatively assess the parameters of wells and gas reservoirs,such as original gas-in-place,fracture half-length,reservoir permeability,and well drainage radius.This facilitates the analysis of production dynamics of fractured wells and well-controlled areas,subsequently aiding in locating residual gas and guiding the configuration of well patterns.The specific evaluation processes are detailed.Additionally,a numerical simulation mechanism model was constructed to verify the reliability of the developed methods.The methods introduced have been successfully implemented in field water-producing gas wells within tight gas reservoirs containing mobile water. 展开更多
关键词 Gas reservoirs with mobile water Gas-water two phase flow High stress sensitivity Equivalent homogenous phase Rate transient analysis
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Relationship of HepG2 cell sensitivity to continuous low dose-rate irradiation with ATM phosphorylation 认领 引用
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作者 Quelin Mei Jianyong Yang +2 位作者 Duanming Du Zaizhong Cheng Pengcheng liu 《The Chinese-German Journal of Clinical Oncology》 2008年第8期435-439,共5页
Objective: To investigate the change of ATM phosphorylation in HepG2 cells and its effect on HepG2 cell survival under a continuous low dose-rate irradiation. Methods: HepG2 cells were exposed to equivalent doses of i... Objective: To investigate the change of ATM phosphorylation in HepG2 cells and its effect on HepG2 cell survival under a continuous low dose-rate irradiation. Methods: HepG2 cells were exposed to equivalent doses of irradiation deliv- ered at either a continuous low dose-rate (7.76 cGy/h) or a high dose-rate (4500 cGy/h). The ATM phosphorylated proteins and surviving fraction of HepG2 cell after low dose-rate irradiation were compared with that after equivalent doses of high dose-rate irradiation. Results: The phosphorylation of ATM protein was maximal at 0.5 Gy irradiation delivered at either a high dose-rate or a continuous low dose-rate. As the radiation dose increased, the phosphorylation of ATM protein decreased under continuous low dose-rate irradiation. However, the phosphorylation of ATM protein was remained stable under high dose-rate irradiation. When the phosphorylation of ATM protein under continuous low dose-rate irradiation was equal to that under high dose-rate irradiation, there was no significant difference in the surviving fraction of HepG2 cells between two ir- radiation methods (P > 0.05). When the phosphorylation of ATM protein significantly decreased after continuous low dose-rate irradiation compared with that after high dose-rate irradiation, increased amounts of cell killing was found in low dose-rate irradiation (P < 0.01). Conclusion: Continuous low dose-rate irradiation increases HepG2 cells radiosensitivity compared with high dose-rate irradiation. The increased amounts of cell killing following continuous low dose-rate exposures are associated with reduced ATM phosphorylated protein. 展开更多
关键词 low dose-rate radiotherapy hepatocarcinoma cells radiosensitivity ATM protein
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Molten Salt-Shielded Synthesis(MS3)of MXenes in Air 认领 引用 被引量：9
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作者 Jinjin Chen Qianqian Jin +7 位作者 Youbing Li Hui Shao Pengcheng Liu Ying Liu Pierre-Louis Taberna Qing Huang Zifeng Lin Patrice Simon 《Energy & Environmental Materials》 SCIE EI CAS CSCD 2023年第2期159-164,共6页
MXenes are two-dimensional transition metal carbides and/or nitrides with unique physiochemical properties and have attracted extensive interest in numerous fields.However,current MXene synthesis methods are limited b... MXenes are two-dimensional transition metal carbides and/or nitrides with unique physiochemical properties and have attracted extensive interest in numerous fields.However,current MXene synthesis methods are limited by hazardous synthesis conditions,high production costs,or difficulty in largescale production.Therefore,a general,safe,cost-effective,and scalable synthesis method for MXenes is crucial.Here,we report the fast synthesis of MXenes in the open air using a molten salt-shielded synthesis(MS3)method,which uses Lewis-acid salts as etchants and a low-melting-point eutectic salt mixture as the reaction medium and shield to prevent MXene oxidation at high temperatures.Carbide and nitride MXenes,including Ti3C2Tx,Ti2CTx,Ti3CNTx,and Ti4N3Tx,were successfully synthesized using the MS3method.We also present the flexibility of the MS3method by scaling the etching process to large batches of 20 and 60 g of Ti3AlC2MAX precursor in one pot.When used as negative electrodes,the prepared MS3-MXenes delivered excellent electrochemical properties for high-rate Li-ion storage. 展开更多
关键词 carbides lithium-ion storage molten salt synthesis MXene nitrides
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Progressive deterioration of the upper respiratory tract and the gut microbiomes in children during the early infection stages of COVID-19 认领 引用 被引量：6
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作者 Rong Xu Pengcheng Liu +7 位作者 Tao Zhang Qunfu Wu Mei Zeng Yingying Ma Xia Jin Jin Xu Zhigang Zhang Chiyu Zhang 《Journal of Genetics and Genomics》 SCIE CAS CSCD 2021年第9期803-814,共12页
Children are less susceptible to coronavirus disease 2019 (COVID-19), and they have manifested lower morbidity and mortality after infection, for which a multitude of mechanisms may be considered. Whether the normal d... Children are less susceptible to coronavirus disease 2019 (COVID-19), and they have manifested lower morbidity and mortality after infection, for which a multitude of mechanisms may be considered. Whether the normal development of the gut-airway microbiome in children is affected by COVID-19 has not been evaluated. Here, we demonstrate that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)infection alters the upper respiratory tract and the gut microbiomes in nine children. The alteration of the microbiome is dominated by the genus Pseudomonas, and it sustains for up to 25e58 days in different individuals. Moreover, the patterns of alternation are different between the upper respiratory tract and the gut. Longitudinal investigation shows that the upper respiratory tract and the gut microbiomes are extremely variable among children during the course of COVID-19. The dysbiosis of microbiome persists in7 of 8 children for at least 19e24 days after discharge from the hospital. Disturbed development of both the gut and the upper respiratory microbiomes and prolonged dysbiosis in these nine children imply possible long-term complications after clinical recovery from COVID-19, such as predisposition to the increased health risk in the post-COVID-19 era. 展开更多
关键词 SARS-CoV-2/COVID-19 Upper respiratory microbiome Gut microbiota Dysbiosis Children
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Concentrated ternary ether electrolyte allows for stable cycling of a lithium metal battery with commercial mass loading high-nickel NMC and thin anodes 认领 引用 被引量：3
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作者 Jun Yang Xing Li +17 位作者 Ke Qu Yixian Wang Kangqi Shen Changhuan Jiang Bo Yu Pan Luo Zhuangzhi Li Mingyang Chen Bingshu Guo Mingshan Wang Junchen Chen Zhiyuan Ma Yun Huang Zhenzhong Yang Pengcheng Liu Rong Huang Xiaodi Ren David Mitlin 《Carbon Energy》 SCIE EI CAS CSCD 2023年第3期2-18,共17页
A new concentrated ternary salt ether-based electrolyte enables stable cycling of lithium metal battery(LMB)cells with high-mass-loading(13.8 mg cm−2,2.5 mAh cm−2)NMC622(LiNi0.6Co0.2Mn0.2O2)cathodes ... A new concentrated ternary salt ether-based electrolyte enables stable cycling of lithium metal battery(LMB)cells with high-mass-loading(13.8 mg cm−2,2.5 mAh cm−2)NMC622(LiNi0.6Co0.2Mn0.2O2)cathodes and 50μm Li anodes.Termed“CETHER-3,”this electrolyte is based on LiTFSI,LiDFOB,and LiBF4 with 5 vol%fluorinated ethylene carbonate in 1,2-dimethoxyethane.Commer-cial carbonate and state-of-the-art binary salt ether electrolytes were also tested as baselines.With CETHER-3,the electrochemical performance of the full-cell battery is among the most favorably reported in terms of high-voltage cycling stability.For example,LiNixMnyCo1-x-yO2(NMC)-Li metal cells retain 80%capacity at 430 cycles with a 4.4 V cut-off and 83%capacity at 100 cycles with a 4.5 V cut-off(charge at C/5,discharge at C/2).According to simulation by density functional theory and molecular dynamics,this favorable performance is an outcome of enhanced coordination between Li+and the solvent/salt molecules.Combining advanced microscopy(high-resolution transmission electron microscopy,scanning electron microscopy)and surface science(X-ray photoelectron spectroscopy,time-of-fight secondary ion mass spectroscopy,Fourier-transform infrared spectroscopy,Raman spectroscopy),it is demonstrated that a thinner and more stable cathode electrolyte interphase(CEI)and solid electrolyte interphase(SEI)are formed.The CEI is rich in lithium sulfide(Li2SO3),while the SEI is rich in Li3N and LiF.During cycling,the CEI/SEI suppresses both the deleterious transformation of the cathode R-3m layered near-surface structure into disordered rock salt and the growth of lithium metal dendrites. 展开更多
关键词 concentrated electrolyte density functional theory ether electrolyte high‐nickel cathode high‐voltage battery molecular dynamics
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Secure Video Streaming with Lightweight Cipher PRESENT in an SDN Testbed 认领 引用 被引量：4
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作者 Pengcheng Liu Xiaojun Wang +3 位作者 S.R.Chaudhry Khalid Javeed Yue Ma Martin Collier 《Computers, Materials & Continua》 SCIE EI 2018年第12期353-363,共11页
The combination of traditional processors and Field Programmable Gate Arrays(FPGA)is shaping the future networking platform for intensive computation in resource-constrained networks and devices.These networks present... The combination of traditional processors and Field Programmable Gate Arrays(FPGA)is shaping the future networking platform for intensive computation in resource-constrained networks and devices.These networks present two key challenges of security and resource limitations.Lightweight ciphers are suitable to provide data security in such constrained environments.Implementing the lightweight PRESENT encryption algorithm in a reconfigurable platform(FPGAs)can offer secure communication service and flexibility.This paper presents hardware acceleration of security primitives in SDN using NETFPGA-10G.We implement an efficient design of the PRESENT algorithm for faster,smaller and lower power consumption hardware circuit using Verilog.We evaluate the performance of the hardware and software implementations of PRESENT.Experimental results prove that the proposed hardware design is a viable option for use in resource constrained devices in future networks and their applications. 展开更多
关键词 Lightweight cipher netFPGA openFlow RESENT encryption
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