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nano-Micro Letters 2017年第4期9卷 3-10页

作者： Dongxiang Luo Yanfeng yang Ye Xiao Yu Zhao Yibin yang Baiquan Liu School of Materials and Energy Guangdong University of Technology Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of Technology LUMInOUS Center of Excellence for Semiconductor Lighting and Displays School of Electrical and Electronic Engineering Nanyang Technological University

The interlayer(IL) plays a vital role in hybrid white organic light-emitting diodes(WOLEDs); however,only a negligible amount of attention has been given to n-type ILs. Herein, the n-type IL, for the first time,has been demonstrated to achieve a high efficiency, high color rendering index(CRI), and low voltage *** device exhibits a maximum total efficiency of 41.5 lm W^(-1), the highest among hybrid WOLEDs with n-type ILs. In addition, high CRIs(80–88) at practical luminances(C1000 cd m^(-2)) have been obtained, satisfying the demand for indoor lighting. Remarkably, a CRI of 88 is the highest among hybrid WOLEDs. Moreover, the device exhibits low voltages, with a turn-on voltage of only 2.5 V([1 cd m^(-2)), which is the lowest among hybrid WOLEDs. The intrinsic working mechanism of the device has also been explored; in particular, the role of n-type ILs in regulating the distribution of charges and excitons has been unveiled. The findings demonstrate that the introduction of n-type ILs is effective in developing high-performance hybrid WOLEDs.

关键词： White light Hybrid Interlayer Color rendering index Organic light-emitting diodes

Characteristics of n^(6)-methyladenosine Modification During Sexual Reproduction of Chlamydomonas reinhardtii

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Genomics, Proteomics & Bioinformatics 2023年第4期21卷 756-768页

作者： Ying Lv Fei Han Mengxia Liu Ting Zhang Guanshen Cui Jiaojiao Wang Ying yang Yun-Gui yang Wenqiang yang Photosynthesis Research Center Key Laboratory of PhotobiologyInstitute of BotanyChinese Academy of SciencesBeijing 100093China China national Botanical Garden Beijing 100093China College of Advanced Agricultural Sciences University of Chinese Academy of SciencesBeijing 100049China CAS Key Laboratory of Genomic and Precision Medicine Beijing Institute of GenomicsChinese Academy of Sciences and China National Center for BioinformationBeijing 100101China Sino-Danish College University of Chinese Academy of SciencesBeijing 100049China Institute of Stem Cell and Regeneration Chinese Academy of SciencesBeijing 100101China Innovative Academy of Seed Design Chinese Academy of SciencesBeijing 100093China

The unicellular green alga Chlamydomonas reinhardtii(hereafter Chlamydomonas)possesses both plant and animal attributes,and it is an ideal model organism for studying fundamental processes such as photosynthesis,sexual reproduction,and life cycle.n^(6)-methyladenosine(m^(6)A)is the most prevalent mRnA modification,and it plays important roles during sexual reproduction in animals and ***,the pattern and function of m^(6)A modification during the sexual reproduction of Chlamydomonas remain ***,we performed transcriptome and methylated RnA immunoprecipitation sequencing(MeRIP-seq)analyses on six samples from different stages during sexual reproduction of the Chlamydomonas life *** results show that m^(6)A modification frequently occurs at the main motif of DRAC(D=G/A/U,R=A/G)in Chlamydomonas ***,m^(6)A peaks in Chlamydomonas mRnAs are mainly enriched in the 30 untranslated regions(30 UTRs)and negatively correlated with the abundance of transcripts at each *** particular,there is a significant negative correlation between the expression levels and the m^(6)A levels of genes involved in the microtubule-associated pathway,indicating that m^(6)A modification influences the sexual reproduction and the life cycle of Chlamydomonas by regulating microtubule-based *** summary,our findings are the first to demonstrate the distribution and the functions of m^(6)A modification in Chlamydomonas mRnAs and provide new evolutionary insights into m^(6)A modification in the process of sexual reproduction in other plant organisms.

关键词： n6-methyladenosine m^(6)A sequencing Sexual reproduction Microtubule-associated pathway Photosynthesis Chlamydomonas reinhardtii

Autoignition of butanol isomers/n-heptane blend fuels on a rapid compression machine in n_2/O_2/Ar mixtures

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Science China(Technological Sciences) 2014年第3期57卷 461-470页

作者： yang Zheng WAnG Yue yang Xin QIAn Yong LU XingCai HUAnG Zhen Key Laboratory for Power machinery and Engineering of M. O. E. Shanghai Jiao Tong University

Ignition delay times of butanol isomers/n-heptane mixture were measured using a rapid compression machine at compressed pressures of 15,20 and 30 bar,in the compressed temperature range of 650–830 K and equivalence ratio of *** analysis and reaction fluxes analysis were performed using a detailed mechanism of blend fuels so as to evaluate the impact of n-heptane addition and temperature variation on the ignition and combustion *** the experimental conditions in this study,the blend fuels displays apparent low and high temperature reactions and a negative-temperature-coefficient(nTC)*** increasing butanol isomers mole fraction in the mixtures,the ignition delay times *** is worth noting that the suppression to n-heptane ignition from tert-butanol is very *** ignition delay time of 40/60 tert-butanol/n-heptane mixture is smaller than other three kinds of *** the increasing of tert-butanol mole fraction,the increasing range of its ignition delay time is very ***,compressed pressure has a limited effect on the ignition of blend mixture at low temperature but certain influence at medium temperature ***-butanol/n-heptane mixture is not sensitive to the *** chemical analysis indicates that butanol isomers also present the nTC behavior because of the low temperature reactivity radicals pool produced by *** fluxes analysis shows that the n-heptane addition has little impact on the reaction *** analysis shows that for the pure n-butanol,2-butanol and iso-butanol fuel,H-abstraction from the?-carbon plays the dominant role in the reactions having the inhibiting effect on the low-temperature branching,while the H-abstraction from the?-carbon can promote the ignition;for tert-butanol/n-heptane mixtures,reaction R16.H2O2(+M)OH+OH(+M)plays the leading *** n-butanol/n-heptane,iso-butanol/n-heptane mixtures,the major promoting reactions include some H-abstraction fr

关键词： butanol isomers blend fuels ignition delay rapid compression machine chemical kinetics

[(CH_(3))_(4)n]_(2)Mn_(0.6)Zn_(0.4)Br_(4):Lead-free MnII-based hybrid halide with high photoluminescence quantum yield for backlight displays

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nano Research 2023年第4期16卷 5894-5899页

作者： Xiaoting Liu Jiapeng yang Wenya Chen Fan yang Yihuang Chen Xiaojuan Liang Shuang Pan Weidong Xiang College of Chemistry and Materials Engineering Wenzhou UniversityWenzhou 325035China College of Life and Environmental Science Wenzhou UniversityWenzhou 325035China

High efficient lead halide perovskites with wide-color gamut properties have emerged as new candidates for backlight ***,the toxicity of lead and the instability of halide perovskites greatly limit their practical ***,the luminescent powders of[(CH_(3))4n]2MnBr_(4)and[(CH_(3))4n]MnBr3 were synthesized via a simple yet robust solvent evaporation method.[(CH_(3))4n]2MnBr_(4)with tetrahedral coordination Mn^(2+)and[(CH_(3))4n]MnBr3 with octahedral coordination Mn^(2+)show green at 517 nm and red emission peaks at 620 nm,respectively,originating from the^(4)T1-^(6)A_(1)transition of Mn^(2+).To enhance optical of manganese halide via effective alloying,Zn^(2+)-doped[(CH_(3))4n]2MnBr_(4)was successfully prepared,and the quantum efficiency of[(CH_(3))_(4)n]_(2)Mn_(0.6)Zn_(0.4)Br_(4)was as high as 65%.Furthermore,[(CH_(3))4n]2Mn0.6Zn0.4Br_(4)exhibits better optical and thermal stability compared to[(CH_(3))4n]2MnBr_(4).[(CH_(3))_(4)n]_(2)Mn_(0.6)Zn_(0.4)Br_(4)@CsPbBr_(1.2)I_(1.8)light conversion films with different green-to-red ratios are placed in backlight display devices,and their color gamut exceeds 106%of the national Television Standards Committee(nTSC)1953 standard,which is superior to the currently reported Mn-based *** work broadly shows that the[(CH_(3))_(4)n]_(2)Mn_(0.6)Zn_(0.4)Br_(4)will provide effective route to fabricate stable and high-performance lead-free liquid crystal displays.

关键词： [(CH3)4n]MnBr3 [(CH3)4n]2Mn0.6Zn0.4Br4 stability Zn/Mn alloying backlight display

A facile and green strategy for mass production of dispersive FeCo-rich phosphides@n,P-doped carbon electrocatalysts toward efficient and stable rechargeable Zn-air battery and water splitting

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Journal of Materials Science & Technology 2024年第15期182卷 1-11页

作者： Bo Wang Qiao Liu Ao Yuan Qing Shi Lan Jiang Weiyou yang Tao yang Xinmei Hou Institute for Carbon neutrality University of Science and Technology BeijingBeijing 100083China Institute of Micro/nano Materials and Devices Ningbo University of TechnologyNingbo 315211China

One key step for advancing the widespread practical application of rechargeable metal-air batteries and water electrolysis fundamentally relies on the development of cost-effective multifunctional electrocata-lysts toward oxygen and hydrogen-involving *** present work initiates a tofu-derived one-pot strategy for green,facile,and mass production of highly active and stable catalyst toward oxygen reduc-tion/evolution and hydrogen evolution reactions,through the preparation of Fe/Co cross-linked tofu gel and the subsequent *** the free use of additional n/P precursors or pore-forming agents,the as-prepared materials comprise highly dispersive FeCo-rich phosphides nanoparticles and porous n,P co-doped carbon network inherited from the tofu *** resultant catalysts exhibit remarkably enhanced trifunctional activities as compared to the Fe_(2)P and Co_(2)P counterparts,along with better long-term stabilities than the benchmark RuO_(2)and Pt/C ***,the as-assembled Zn-air battery delivers a large power density(174 mW cm^(-2))with excellent cycle stability(the gap of charge/discharge voltage@10 mA cm^(-2)increases by 0.01 V after 720 h of operation,vs.0.16 V of Pt/C-RuO_(2)based battery after 378 h).Furthermore,the as-constructed alkaline electrolyzer just requires a small voltage of 1.55 V@10 mA cm^(-2),which outperforms nearly all of those of biomass-derived electrocatalysts ever reported,and that of noble metal catalysts-based electrolyzers(1.72 V@10 mA cm^(-2)for Pt/C-RuO_(2)),underscoring their bright future toward commercial applications in green energy conversion devices.

关键词： Soybean Phosphides Electrocatalysis Overall water splitting Zn-air battery

Health care data analysis and visualization using interactive data exploration for sportsperson

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Science China(Information Sciences) 2022年第6期65卷 85-97页

作者： Hao LIU yang ZHAnG Ke LIAn Yifei ZHAnG Oscar Sanjuán MARTínEZ Rubén González CRESPO Department of Sport and Exercise Sciences Kunsan National University Department of naval Architecture and Ocean Engineering Ludong University Computer Science Department School of Engineering and Technology Universidad Internacional de La Rioja

Sports have scored significant attention among the public in this multifaceted world. Diverse training strategies are followed by many athletics and even flexible to adapt comfortable and optimal techniques. This fact has led physicians and educators to encourage remote health surveillance as one of the core strategies in athletic training. The need for innovative data exploration methodologies capable of facing Big Data’s influence to make remote monitoring services viable has been raised by the growing ties of networks that deliver high quantities of real-time data. This paper presents an interactive healthcare data exploration and visualization(IHDEV) model to enhance multi-scaling data analysis and visualization in the athletic health vision platform. This paper aims to simplify optimization methods to measure sportsperson muscle tension. This model illustrates a three-layer architecture with a raw data acquisition layer, data analysis layer, and visualization layer. The first layer considers the acquisition of health-related data from the athletes for remote monitoring using IoT and stores it into the cloud. The data analysis layer adapts artificial intelligence(AI) in data mining. The final layer introduces an intelligent interactive data visualization model assisted by a reactive workflow mechanism, enabling analysis and visualization solutions to be composed in a personalized data flow appropriate to the athletic training. This experimental study extended with two healthcare datasets to show the feasibility of IHDEV in promoting healthcare based athletic monitoring and improves the accuracy ratio of 96.7%, prediction ratio of 96.2%, an efficiency ratio of 96.8%, Pearson correlation coefficient of 98.2%, and reduces the error rate of 18.7% compared to other conventional models.

关键词： artificial intelligence health monitoring data visualization data analysis athletics

Efficient photocatalysis of tetracycline hydrochloride(TC-HCl) from pharmaceutical wastewater using AgCl/ZnO/g-C_(3)n_(4) composite under visible light: Process and mechanisms

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Journal of Environmental Sciences 2023年第4期126卷 249-262页

作者： Chenman Ding Qiurong Zhu Bei yang Evangelos Petropoulos Lihong Xue Yanfang Feng Shiying He Linzhang yang College of Resources and Environmental Sciences Nanjing Agricultural UniversityNanjing 210018China Institute of Agricultural Resources and Environment Jiangsu Academy of Agricultural SciencesNanjing 210018China School of Engineering Newcastle UniversityNewcastle upon Tyne NE17RUUK School of Chemistry and Chemical Engineering Nanjing University of Science and TechnologyNanjing 210018China

AgCl/ZnO/g-C_(3)n_(4), a visible light activated ternary composite catalyst, was prepared by combining calcination, hydrothermal reaction and in-situ deposition processes to treat/photocatalyse tetracycline hydrochloride(TC-HCl) from pharmaceutical wastewater under visible light. The morphological, structural, electrical, and optical features of the novel photocatalyst were characterized using scanning electron microscopy(SEM), UV-visible light absorption spectrum(UV–Vis DRS), X-ray diffractometer(XRD), Fourier transform infrared spectroscopy(FT-IR), X-ray photoelectron spectroscopy(XPS), and transient photocurrent techniques. All analyses confirmed that the formation of heterojunctions between AgCl/ZnO and g-C_(3)n_(4)significantly increase electron-hole transfer and separation compared to pure ZnO and g-C_(3)n_(4). Thus, AgCl/ZnO/g-C_(3)n_(4)could exhibit superior photocatalytic activity during TC-HCl assays(over 90% removal) under visible light irradiation. The composite could maintain its photocatalytic stability even after four consecutive reaction cycles. Hydrogen peroxide(H_(2)O_(2)) and superoxide radical(·O_(2)) contributed more than holes(h+) and hydroxyl radicals(·OH) to the degradation process as showed by trapping experiments. Liquid chromatograph-mass spectrometer(LC-MS) was used for the representation of the TC-HCl potential degradation pathway. The applicability and the treatment potential of AgCl/ZnO/gC_(3)n_(4)against actual pharmaceutical wastewater showed that the composite can achieve removal efficiencies of 81.7%, 71.4% and 69.0% for TC-HCl, chemical oxygen demand(COD) and total organic carbon(TOC) respectively. AgCl/ZnO/g-C_(3)n_(4)can be a prospective key photocatalyst in the field of degradation of persistent, hardly-degradable pollutants, from industrial wastewater and not only.

关键词： Photocatalyst Tetracycline degradation Pharmaceutical wastewater C_(3)n_(4)composites Degradation pathway

The degradation of cathodic Fe/n/C catalyst in PEMFCs:The evolution of remanent active sites after demetallation

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Journal of Materials Science & Technology 2024年第6期173卷 100-106页

作者： Xiaohua yang Wentao Sun Jiatang Chen yang Gao Rongxian Zhang Qun Luo Tao Lyu Lei Du Institut national de la Recherche Scientifique-Énergie Matériaux et Télécommunications J3X 1P7 VarennesQCCanada School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China State Key Laboratory of Advanced Special Steels&Shanghai Key Laboratory of Advanced Ferrometallurgy School of Materials Science and EngineeringShanghai UniversityShanghai 200444China Huangpu Hydrogen Energy Innovation Center School of Chemistry and Chemical EngineeringGuangzhou UniversityGuangzhou 510006China

The state-of-the-art Fe/n/C catalyst has presented comparable initial cathode performance to the benchmark Pt/C catalyst in proton exchange membrane fuel cells(PEMFCs).However,the major bottleneck is its significant activity decay in real-world PEMFC *** superposed“fast decay”and“slow decay”have been well documented to describe the degradation process of Fe/n/C catalysts during PEMFC *** fast decay has been well understood in close relation to the demetallation at the initial 15-h stability ***,it is still unclear how the remanent active sites evolve after *** this end,the catalyst performance and evolution of a typical Fe/n/C active site were herein investigated through postmortem characterizations of the membrane electrode assemblies(MEAs)after different *** is presented that 1 bar pressure and 80℃ temperature are the optimized conditions for Fe/n/C ***,the“fast decay”in the initial 15 h is immune to the various operating parameters,while the“slow decay”highly depends on the applied temperature and *** to the X-ray absorption spectra(XAS)analysis and stability test of MEA,the gradual evolution of Fe-n coordination to Fe-O is found correlated with the“slow decay”and accounts for the catalyst decay after the demetallation process.

关键词： Fe/n/C Stability Decay mechanism Metal oxidation PEMFCs

Enhanced confinement synthesis of atomically dispersed Fe-n-C catalyst from resin polymer for oxygen reduction

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Journal of Energy Chemistry 2022年第2期31卷 630-636页

作者： Ailing Song Hao Tian Wang yang Wu yang Yuhan Xie Hao Liu Guoxiu Wang Guangjie Shao State Key Laboratory of Metastable Materials Science and Technology Hebei Key Laboratory of Heavy Metal Deep-Remediation in Water and Resource ReuseCollege of Environmental and Chemical EngineeringYanshan UniversityQinhuangdao 066004HebeiChina Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNSW 2007Australia Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China

Due to larger atom utilization,unique electronic properties and unsaturated coordination,atomically dispersed non-precious metal catalysts with outstanding performances have received great attention in *** the challenge of serious aggregation,rational synthesis of an atomic catalyst with good dispersion of atoms is paramount to the development of these ***,we report an enhanced confinement strategy to synthesize a catalyst comprised of atomically dispersed Fe supported on porous nitrogen-doped graphitic carbon from the novel and more cross-linkable Melamine-Glyoxal *** isolated grid trapping,excessive melamine restricting,and nitrogen anchoring are strongly combined to ensure the final atomic-level dispersion of metal *** studies revealed enhanced kinetics of the obtained catalyst towards oxygen reduction reaction(ORR).This catalytic activity originates from the highly active surface with atomically dispersed iron sites as well as the multi-level three-dimensional structure with fast mass and electron *** enhanced confinement strategy endows the resin-derived atomic catalyst with a great prospect to develop for commercialization in future.

关键词： non-precious metal catalysts Atomic catalyst Oxygen reduction reaction Confinement synthesis

Evolution of the field quantum entropy and entanglement in a system of multimode light field interacting resonantly with a two-level atom through n_j-degenerate n~Σ-photon process

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Science China(Physics,Mechanics & Astronomy) 2008年第9期51卷 1264-1271页

作者： LIU WangYun yang ZhiYong An YuYing School of Technical Physics Xidian UniversityXi’an 710071China

The time evolution of the field quantum entropy and entanglement in a system of multi-mode coherent light field resonantly interacting with a two-level atom by de-generating the multi-photon process is studied by utilizing the Von neumann re-duced entropy theory,and the analytical expressions of the quantum entropy of the multimode field and the numerical calculation results for three-mode field inter-acting with the atom are obtained. Our attention focuses on the discussion of the influences of the initial average photon number,the atomic distribution angle and the phase angle of the atom dipole on the evolution of the quantum field entropy and entanglement. The results obtained from the numerical calculation indicate that: the stronger the quantum field is,the weaker the entanglement between the quan-tum field and the atom will be,and when the field is strong enough,the two sub-systems may be in a disentangled state all the time; the quantum field entropy is strongly dependent on the atomic distribution angle,namely,the quantum field and the two-level atom are always in the entangled state,and are nearly stable at maximum entanglement after a short time of vibration; the larger the atomic dis-tribution angle is,the shorter the time for the field quantum entropy to evolve its maximum value is; the phase angles of the atom dipole almost have no influences on the entanglement between the quantum field and the two-level atom. Entangled states or pure states based on these properties of the field quantum entropy can be prepared.

关键词： field quantum entropy Von neumann reduced entropy degenerate multi-photon process quantum entan-glement