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Seasonal Prediction Assessment of the South Asian Summer Monsoon: ENSEMBLES versus DEMETER

Atmospheric and Oceanic Science Letters 2015年第4期8卷 208-214页

作者： TIAN bao-Qiang fan Ke Nansen-Zhu International Research Centre Institute of Atmospheric Physics Chinese Academy of Sciences Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters Nanjing University of Information Science& Technology

The seasonal forecasting skill with respect to the South Asian summer monsoon(SASM) was compared between the European Commission FP7 project(ENSEMBLES) and the Development of a European Multimodel Ensemble System for Seasonal to Interannual Prediction project(DEMETER). The Webster-Yang index(WYI) was chosen to represent the intensity of the SASM. First, the authors compared the ability to forecast the zonal wind at 850 h Pa(U850) and 200 h Pa(U200) between ENSEMBLES and DEMETER models. The results indicated that the models from the European Centre for Medium-Range Weather Forecasts, International Organization(ECMWF) and UK Met Office(UKMO) in ENSEMBLES possess greater skill in seasonally forecasting the JJA(june, July, and August) U850, U200, and U850 minus U200 than in DEMETER. Compared to in DEMETER, the JJA U200 and U850 minus U200 forecasting skill was greater for the model from MétéoFrance(MF) in ENSEMBLES over most of the SASM region. The three coupled models(ECMWF, MF, and UKMO), especially the UKMO model in ENSEMBLES, all demonstrated improved skill in their seasonal forecasts compared to in DEMETER with respect to the interannual variability of the SASM. The three ENSEMBLES models also showed better ability in forecasting the sea surface temperature anomalies(SSTAs) over the eastern equatorial Pacific and North Indian Ocean, and more accurately reproduced the large-scale atmospheric circulation and precipitation over northern India, which are related to the SASM. It seems that the couple between the atmospheric system and external forcing of ENSMBLES over Indian Ocean and Pacific is better than that of DEMETER.

关键词： South Asian summer monsoon ENSEMBLES DEMETER climate prediction

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Effective Curvature Matrices and Mixed Moments of General Pulsed Paraxial Beams

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Chinese Physics Letters 1999年第12期16卷 894-895页

作者： YANG jun fan Dian-yuan National Laboratory on High Power Laser and Physics Shanghai Institute of Optics and Fine MechanicsChinese Academy of SciencesShanghai 201800

On the basis of the space-time Wigner distribution function, we use the least-squares fitting method to derive the relationship between effective wavefront curvature matrices and second-order mixed moments of quasimonochromatic and polychromatic pulsed paraxial beams. The expressions here are valid for both completely coherent and partially coherent light in the three-dimensional space. Finally, the fitting method is extended to the higher-order situation;from this, a novel technique for characterizing the beam phase from the moments and their derivatives is presented.

关键词： space. axial coherent

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Calculation of effective point reactor kinetic parameters combined with the Galerkin finite element method

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Nuclear Science and Techniques 2020年第7期31卷 65-75页

作者： bao-Xin Yuan Wan-Kui Yang Song-bao Zhang Bin Zhong jun-Xia Wei Yang-jun Ying Institute of Nuclear Physics and Chemistry China Academy of Engineering PhysicsMianyang 621900China Institute of Applied Physics and Computational Mathematics Beijing 100094China

Precise point reactor kinetic parameters are essential in the study of reactor *** reactor kinetic parameters include the effective delayed neutron fraction and prompt neutron *** this work,effective point reactor kinetic parameters,which can be applied to unstructured grids,were calculated based on the Galerkin finite element ***,two-dimensional and three-dimensional benchmarks were used to verify the calculation of steady-state neutronic ***,the Tehran research reactor core was divided into hexahedral meshes,and the forward flux and adjoint flux were ***,the effective point reactor kinetic parameters of the Tehran research reactor were obtained by comprehensively processing the steady-state neutronic parameters.

关键词： parameters element prompt

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Synergistic effect of solvent and solid additives on morphology optimization for high-performance organic solar cells

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Science China Chemistry 2021年第11期64卷 2017-2024页

作者： Chenling fan Hang Yang Qing Zhang Sunan bao Hongyu fan Xianming Zhu Chaohua Cui Yongfang Li Laboratory of Advanced Optoelectronic Materials Suzhou Key Laboratory of Novel Semiconductor-Optoelectronics Materials and DevicesCollege of ChemistryChemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Organic SolidsInstitute of ChemistryChinese Academy of SciencesBeijing100190China Vacuum Interconnected Nanotech Workstation Suzhou Institute of Nano-Tech and Nano-BionicsChinese Academy of SciencesSuzhou215123China

Controlling the photoactive layer morphology towards nanoscale bi-continuous donor/acceptor interpenetrating networks is a key issue to build high-performance organic solar cells(OSCs).Due to the distinct properties between donor and acceptor materials,casting an active layer from a single solvent solution usually results in either insufficient or excessive phase separation that reduces the device *** comparison to the fullerene acceptors with closed-cage structures,the currently dominant non-fullerene acceptors possess the similar anisotropicπ-πinteractions with p-type organic semiconductor donors,giving rise to the complexity of the morphology ***,we employ 4,4′-dimethoxyoctafluorobiphenyl(OFP)with strong crystallinity as a volatile solid additive to optimize the active layer morphology of *** synergistic effect of 1-chloronaphthalene(CN)and OFP as dual additives shows supreme capability on optimizing the morphology over the conventional additive of CN,which is in favor of improving charge transport and suppressing charge recombination for higher fill factors in various *** particular,the PTQ10:m-BTP-C6 Ph-based device processed by the additive showed a remarkable powerconversion efficiency(PCE)of 17.74%,whereas the control device processed by CN additive yielded a relatively lower PCE of16.45%.

关键词： organic solar cells bulk-heterojunction morphology power conversion efficiency solid additive

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Effect of Pressure on the Nucleation of Diamond with Addition of Oxygen in the Microwave Plasma Chemical Vapor Deposition System

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Chinese Physics Letters 1996年第6期13卷 473-476页

作者： WANG Jian-jun LÜfan-xiu Department of Materials Science and Engineering Beijing University of Science and TechnologyBeijing 100083

Effect of oxygen addition on diamond film deposition at higher pressure was *** was found that addition of oxygen suppressed diamond nucleation,and the effect of suppression increased with increasing pressure,and at certain pressure level diamond deposition was completely *** effect due to oxygen addition dominated at the very early stage(nucleation stage),therefore it is still possible to take the advantage of oxygen addition on quality improvement of diamond films by introducing oxygen after the nucleation stage.

关键词： Diamond Oxygen effect

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Indium-mediated allylation of aryl trichloromethyl ketones in aqueous media

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Chinese Chemical Letters 2007年第9期18卷 1061-1063页

作者： Zhi Jian bao[a] jun Lu[a] Shun jun Ji[a]&Email:chemjsj@*** [a]Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry and Chemical Engineering Suzhou [Soochow] University Suzhou 215123 China

It is described that indium-mediated allylation of trichloromethyl ketones could afford the corresponding homoallylic alcohols smoothly in aqueous media.

关键词： Indium Trichloromethyl ketone Allylation Aqueous media

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An Evaluation of Phase Behaviors of the Oil-Gas-Water System in the Displacement of Crude Oil with CO_(2)

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Acta Geologica Sinica(English Edition) 2023年第2期97卷 573-580页

作者： ZHANG Angang fan Zifei HE jun Petrochina Research Institute of Petroleum Exploration and Development Beijing 100083China

CO_(2)dissolution into an aqueous phase and water evaporation into a gaseous phase takes place during CO_(2)injection into an oil *** study aims to evaluate the phase behaviors of the oil-gas-water system in the displacement of crude oil by CO_(2).The composition of the JL oilfield in the northeast of China is taken as an *** flash calculation of the oil-gas-water system was performed,based on the method presented by Li and *** research results show that CO_(2)dissolution in the aqueous phase declines as the NaCl concentration in formation water ***_(2)injection is beneficial for the evaporation of formation *** NaCl concentration in formation water has little effect on water evaporation and dissolved-gas *** the injection-gas mole fraction of CO_(2)is 0.5,CO_(2)injection can reverse the phase behavior of the petroleum mixture and the oil-gas system is converted to a pure gas-condensate *** CO_(2)injection,water vapor has little effect on the miscibility of multiple contacts,but can reduce the miscibility of the first contact.

关键词： CO_(2)dissolution water vapor phase behaviors formation water sensitivity analysis

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Spectral Fittings of Warm Coronal Radiation with High Seed Photon Temperature:Apparent Low-temperature and Flat Soft Excess in AGNs

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Research in Astronomy and Astrophysics 2024年第7期24卷 135-144页

作者： Ze-Yuan Tang jun-Jie Feng jun-Hui fan School of Mathematics and Information Science Guangzhou UniversityGuangzhou 510006China Center for Astrophysics Guangzhou UniversityGuangzhou 510006China Astronomy Science and Technology Research Laboratory of Department of Education of Guangdong Province Guangzhou 510006China Key Laboratory for Astronomical Observation and Technology of Guangzhou Guangzhou 510006China

A warm corona has been widely proposed to explain the soft excess(SE)in X-ray above the 2-10 ke V power law extrapolation in Active Galactic Nuclei(AGNs).In actual spectral fittings,the warm coronal seed photon temperature(T_s)is usually assumed to be far away from the soft X-ray,but kT_scan reach close to 0.1 ke V in the standard accretion disk *** this study,we used Monte Carlo simulations to obtain radiation spectra from a slab-like warm corona and fitted the spectra using the spherical-geometry-based routine THCOMP or a thermal *** findings reveal tha high T_scan influence the fitting results.A moderately high kT_s(around 0.03 ke V)can result in an apparent low-temperature and flat SE,while an extremely high kT_s(around 0.07 ke V)can even produce an unobserved blackbody-like *** conclusions indicate that,for spectral fittings of the warm coronal radiation(SE in AGNs),kT_sshould be treated as a free parameter with an upper limit,and an accurate coronal geometry is necessary when kT_s>0.01 ke V.

关键词： galaxies active-accretion-accretion disks-black hole physics

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SwinFusion: Cross-domain Long-range Learning for General Image Fusion via Swin Transformer

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IEEE/CAA Journal of Automatica Sinica 2022年第7期9卷 1200-1217页

作者： Jiayi Ma Linfeng Tang fan fan jun Huang Xiaoguang Mei Yong Ma The authors are with the Electronic Information School Wuhan UniversityWuhan 430072China IEEE

This study proposes a novel general image fusion framework based on cross-domain long-range learning and Swin Transformer,termed as *** the one hand,an attention-guided cross-domain module is devised to achieve sufficient integration of complementary information and global *** specifically,the proposed method involves an intra-domain fusion unit based on self-attention and an interdomain fusion unit based on cross-attention,which mine and integrate long dependencies within the same domain and across *** long-range dependency modeling,the network is able to fully implement domain-specific information extraction and cross-domain complementary information integration as well as maintaining the appropriate apparent intensity from a global *** particular,we introduce the shifted windows mechanism into the self-attention and cross-attention,which allows our model to receive images with arbitrary *** the other hand,the multi-scene image fusion problems are generalized to a unified framework with structure maintenance,detail preservation,and proper intensity ***,an elaborate loss function,consisting of SSIM loss,texture loss,and intensity loss,drives the network to preserve abundant texture details and structural information,as well as presenting optimal apparent *** experiments on both multi-modal image fusion and digital photography image fusion demonstrate the superiority of our SwinFusion compared to the state-of-theart unified image fusion algorithms and task-specific *** code and pre-trained weights can be accessed at https://***/Linfeng-Tang/SwinFusion.

关键词： Cross-domain long-range learning image fusion Swin transformer

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Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction:Efficient photodegradation of organic pollutant and toxicity evaluation

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Journal of Materials Science & Technology 2024年第3期170卷 200-211页

作者： Yanyan Zhao Xu fan Hongxing Zheng Enzhou Liu jun fan Xuejun Wang College of Biology Pharmacy and Food Engineering Shangluo UniversityShangluo 726000China QinLing-Bashan Mountains Bioresources Comprehensive Development C.I.C. Shaanxi University of TechnologyHanzhong 723001China School of Chemical Engineering Northwest UniversityXi’an 710069China

Constructing of heterojunction was identified as a feasible way to improve photocatalytic activity of *** this work,a n-p type Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was successfully prepared for organic pollutants *** Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction exhibited much higher pho-tocatalytic activity towards Rhodamine B(92.24%,expose to visible light for 60 min),norfloxacin(81.73%,expose to visible light for 90 min)and levofloxacin(87.46%,expose to visible light for 90 min)than pure Bi_(2)WO_(6)and pure AgInS_(2).Toxicity analysis indicated the low environmental toxicity of Rhodamine B degradation intermediates for Rye seeds and Sudangrass seeds germination and *** study displayed that AgInS_(2)and Bi_(2)WO_(6)work as the primary photocatalyst to form·O_(2)−and ·OH,*** improved photocatalytic activity of the Bi_(2)WO_(6)/AgInS_(2)S-scheme heterojunction was due to the im-proved light response range and intensified carrier separation ***,a S-scheme charge transfer mechanism including multiple charge transfer channels was *** work could provide an effective strategy for organic pollutants degradation in wastewater.

关键词： Photocatalysis S-scheme heterojunction AgInS_(2) Bi_(2)WO_(6) Toxicity experiments

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