检索结果-南通市图书馆

An Unprecedented Efficiency with Approaching 21%Enabled by Additive‑Assisted Layer‑by‑Layer Processing in Organic Solar Cells

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 372-375页

作者： Shuai Xu Youdi Zhang Yanna Sun Pei Cheng Zhaoyang Yao Ning Li long Ye Lijian Zuo Ke Gao Key Laboratory of Advanced Green Functional Materials College of ChemistryChangchun Normal UniversityChangchun 130032People’s Republic of China Shandong Provincial Key Laboratory for Science of Material Creation and Energy Conversion School of Chemistry and Chemical EngineeringShandong UniversityQingdao 266237People’s Republic of China College of Polymer Science and Engineering Sichuan UniversityChengdu 610065People’s Republic of China State Key Laboratory and Institute of Elemento‑Organic Chemistry Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer MaterialsRenewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071People’s Republic of China Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and Devices South China University of TechnologyGuangzhou 510640People’s Republic of China Tianjin Key Laboratory of Molecular Optoelectronic Sciences School of Materials Science and EngineeringTianjin UniversityTianjin 300350People’s Republic of China State Key Laboratory of Silicon Materials MOE Key Laboratory of Macromolecular Synthesis and FunctionalizationDepartment of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027People’s Republic of China

Recently published in Joule,Feng Liu and colleagues from Shanghai Jiaotong University reported a record-breaking 20.8%power conversion efficiency in organic solar cells(OSCs)with an interpenetrating fibril network active layer morphology,featuring a bulk p-in structure and proper vertical segregation achieved through additive-assisted layer-by-layer *** optimized hierarchical gradient fibrillar morphology and optical management synergistically facilitates exciton diffusion,reduces recombination losses,and enhances light capture *** approach not only offers a solution to achieving high-efficiency devices but also demonstrates the potential for commercial applications of OSCs.

关键词： Organic solar cells Additive-assisted layer-by-layer processing Three-dimensional fibril morphology Bulk p-i-n structure Optical management

Development of Ti–V–Mo Complex Microalloyed Hot-Rolled 900-MPa-Grade High-Strength Steel

在线全文

学校读者我要写书评

暂无评论

Acta Metallurgica Sinica(English Letters) 2015年第5期28卷 641-648页

作者： Ke Zhang Zhao-Dong Li Xin-jun Sun Qi-long Yong jun-Wei yang Yuan-Mei Li Pei-Lin Zhao Department of Materials Science and Engineering Kunming University of Science and Technology Central Iron and Steel Research Institute Department of Materials Science and Engineering Huazhong University of Science and Technology R&D Center Laiwu Iron and Steel Group Co Ltd

A new Ti-V-Mo complex microalloyed hot-rolled high-strength steel sheet was developed by controlling a thermo-mechanical controlled processing （TMCP） schedule, in particular with variants in coiling temperature. The effects of coiling temperature （CT） on various hardening mechanisms and mechanical properties of Ti-V-Mo complex mi- croalloyed high-strength low-alloy steels were investigated. The results revealed that the steels are mainly strengthened by a combined effect of ferrite grain refinement hardening and precipitation hardening. The variation in simulated coiling temperature causes a significant difference in strength, which is mainly attributed to different precipitation hardening increment contributions. When the CT is 600 ℃, the experimental steel has the best mechanical properties： ultimate tensile strength （UTS） 1000 MPa, yield strength （YS） 955 MPa and elongation （EL） 17%. Moreover, about 82 wt% of the total precipitates are nano-sized carbide particles with diameter of 1-10 nm, which is randomly dispersed in the ferrite matrix. The nano-sized carbide particles led to a strong precipitation hardening increment up to 310 MPa.

关键词： Hot-rolled high-strength steel Strengthening mechanism Nano-sized carbide Precipitationhardening Coiling temperature

Dynamical phase-field model of coupled electronic and structural processes

在线全文

学校读者我要写书评

暂无评论

npj Computational Materials 2022年第1期8卷 1223-1229页

作者： Tiannan yang long-Qing Chen Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity ParkPA16802USA

Many functional and quantum materials derive their functionality from the responses of both their electronic and lattice subsystems to thermal,electric,and mechanical stimuli or *** we propose a dynamical phase-field model for predicting and modeling the dynamics of simultaneous electronic and structural processes and the accompanying mesoscale pattern evolution under static or ultrafast external *** an illustrative example of application,we study the transient dynamic response of ferroelectric domain walls excited by an ultrafast above-bandgap light *** discover a two-stage relaxational electronic carrier evolution and a structural evolution containing multiple oscillational and relaxational components across picosecond to nanosecond *** phase-field model offers a general theoretical framework which can be applied to a wide range of functional and quantum materials with interactive electronic and lattice orders and phase transitions to understand,predict,and manipulate their ultrafast dynamics and rich mesoscale evolution dynamics of domains,domain walls,and charges.

关键词： electronic structural phase

Multidimensional BSDEs with Weak Monotonicity and General Growth Generators

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica Sinica,English Series 2013年第10期29卷 1885-1906页

作者： Sheng jun FAN long JIANG School of Mathematical Sciences Fudan University College of Sciences China University of Mining and Technology

This paper aims at solving a multidimensional backward stochastic differential equation （BSDE） whose generator g satisfies a weak monotonicity condition and a general growth condition in y. We first establish an existence and uniqueness result of solutions for this kind of BSDEs by using systematically the technique of the priori estimation, the convolution approach, the iteration, the truncation and the Bihari inequality. Then, we overview some assumptions related closely to the monotonieity condition in the literature and compare them in an effective way, which yields that our existence and uniqueness result really and truly unifies the Mao condition in y and the monotonieity condition with the general growth condition in y, and it generalizes some known results. Finally, we prove a stability theorem and a comparison theorem for this kind of BSDEs, which also improves some known results.

关键词： Backward stochastic differential equation. existence and uniqueness weak monotonicitycondition general growth condition comparison theorem

Müller cells are activated in response to retinal outer nuclear layer degeneration in rats subjected to simulated weightlessness conditions

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 2116-2128页

作者： Yuxue Mu Ning Zhang Dongyu Wei Guoqing yang Lilingxuan Yao Xinyue Xu yang Li junhui Xue Zuoming Zhang Tao Chen Aerospace Clinical Medical Center School of Aerospace MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina Department of Aviation Medicine Xijing HospitalAir Force Medical UniversityXi’anShaanxi ProvinceChina Department of Emergency Medicine Wuhan No.1 HospitalWuhanHubei ProvinceChina Third Regiment School of Basic MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina Fourth Regiment School of Basic MedicineAir Force Medical UniversityXi’anShaanxi ProvinceChina

A microgravity environment has been shown to cause ocular damage and affect visual acuity,but the underlying mechanisms remain ***,we established an animal model of weightlessness via tail suspension to examine the pathological changes and molecular mechanisms of retinal damage under *** 4 weeks of tail suspension,there were no notable alterations in retinal function and morphology,while after 8 weeks of tail suspension,significant reductions in retinal function were observed,and the outer nuclear layer was thinner,with abundant apoptotic *** investigate the mechanism underlying the degenerative changes that occurred in the outer nuclear layer of the retina,proteomics was used to analyze differentially expressed proteins in rat retinas after 8 weeks of tail *** results showed that the expression levels of fibroblast growth factor 2(also known as basic fibroblast growth factor)and glial fibrillary acidic protein,which are closely related to Müller cell activation,were significantly *** addition,Müller cell regeneration and Müller cell gliosis were observed after 4 and 8 weeks,respectively,of simulated *** findings indicate that Müller cells play an important regulatory role in retinal outer nuclear layer degeneration during weightlessness.

关键词： glial fibrous acidic protein gliosis Müller cells nerve growth factor neural differentiation neurodegeneration proteomic retinal degeneration retinal outer nuclear layer simulated weightlessness

Modal Parameters Identification of A Real Offshore Platform From the Response Excited by Natural Ice Loading

在线全文

学校读者我要写书评

暂无评论

China Ocean Engineering 2020年第4期34卷 558-570页

作者： yang Wen-long WANG Shu-qing ESI North America Farmington HillsMI 48334USA Shandong Provincial Key Lab of Ocean Engineering Ocean University of ChinaQingdao 266100China

This paper investigates the possibility of utilizing response from natural ice loading for modal parameter identification of real offshore *** test platform is the JZ20-2 MUQ jacket platform located in the Liaodong Bay,China.A field experiment is carried out in winter season,as the platform is excited by floating *** feasibility is demonstrated by the acceleration response of two different *** the SSI-data method,the modal frequencies and damping ratios of four structural modes can be successfully identified from both *** estimated information from both segments is almost identical,which demonstrates that the modal identification is ***,by taking the Jacket platform as a benchmark,the numerical performance of five popular time-domain EMA methods is systematically compared from different *** comparisons are categorized as:(1)stochastic methods versus deterministic methods;(2)high-order methods versus low-order methods;(3)data-driven versus covariance-driven stochastic subspace identification methods.

关键词： modal identification experimental modal analysis offshore platform ambient excitation natural ice loading comparative study

Quick estimation of parameters for the land surface data assimilation system and its influence based on the extended Kalman filter and automatic differentiation

在线全文

学校读者我要写书评

暂无评论

Science China Earth Sciences 2023年第11期66卷 2546-2562页

作者： Jiaxin TIAN Hui LU Kun yang jun QIN long ZHAO Jianhong ZHOU Yaozhi JIANG Xiaogang MA Department of Earth System Science Ministry of Education Key Laboratory for Earth System ModelingInstitute for Global Change StudiesTsinghua UniversityBeijing 100084China National Tibetan Plateau Data Center Key Laboratory of Tibetan Environmental Changes and Land Surfaces ProcessesInstitute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China State Key Laboratory of Resources and Environmental Information System Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of SciencesBeijing 100101China Chongqing Jinfo Mountain Karst Ecosystem National Observation and Research Station School of Geographical SciencesSouth-west UniversityChongqing 400715China Tsinghua University(Department of Earth System Science)-Xi’an Institute of Surveying and Mapping Joint Research Center for Next-Generation Smart Mapping Beijing 100084China

Soil moisture plays a crucial role in drought monitoring,flood forecasting,and water resource *** assimilation methods can integrate the strengths of land surface models(LSM)and remote sensing data to generate highprecision and spatio-temporally continuous soil moisture ***,one of the challenges of the land data assimilation system(LDAS)is how to accurately estimate model and observation *** address this,we had previously proposed a dualcycle assimilation algorithm that can simultaneously estimate the model and observation errors,LSM parameters,and observation operator ***,this algorithm requires a large ensemble size to guarantee stable parameter estimates,resulting in low efficiency and limiting its large-scale *** address this limitation,the authors employed the following approaches:(1)using automatic differentiation to compute the Jacobian matrix of LSM instead of constructing a tangent linear model of LSM,and(2)replacing the ensemble Kalman filter framework with the extended Kalman filter(EKF)framework to improve the efficiency of parameter optimization for the dual-cycle *** EKF-based dual-cycle algorithm accelerated the parameter estimation efficiency near 60 times during a 90-day time period with a model integration time step of 1 *** evaluate the dual-cycle LDAS at the regional-scale,it was applied to assimilate the SMAP soil moisture over the Tibetan Plateau,and soil moisture estimates were validated using in situ observations from four different climatic *** results showed that the EKF-based dual-cycle LDAS corrected biases in both the model and observations and produced more accurate estimates of soil moisture,land surface temperature,and evapotranspiration than did the open loop with default ***,the spatial distribution of soil parameters(sand content,clay content,and porosity)obtained from the LDAS was more reasonable than those of default *** EKF-based

关键词： Soil moisture Data assimilation Parameter optimization Bias correction Error estimation Automatic differentiation

同方期刊数据库

NUMERICAL SIMULATION OF IRREGULAR WAVE-SIMULATING IRREGULAR WAVE TRAIN

在线全文

学校读者我要写书评

暂无评论

Journal of Hydrodynamics 2010年第4期22卷 537-545页

作者： LIANG Xiu-feng yang Jian-min LI jun XIAO long-fei LI Xin State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200030 China

In real sea states,damage incidents on offshore floating structures are not due to the whole time series of wave elevation characterized as statistical one but due to few extreme waves or wave groups in irregular wave ***,using CFD tools to precisely simulate predetermined irregular wave train will lay sound basis for understanding the local characteristic of the flow field and impact loads on offshore floating structures when damage incidents *** this article,the generation of single extreme wave is investigated in a numerical wave ***,experimental irregular wave train is decomposed into certain number of small-amplitude *** Fourier series expansion is performed to determine the amplitude and initial phase angle of each wave component.A hydrodynamic transfer function is used to calculate the amplitude of wave-maker motion associated with each wave *** superposition is carried out on all of the wave-maker motion components to get the final wave-maker *** the wave-maker motion as input,simulation of the single extreme irregular wave train is modeled *** the method is applied to simulating a much more complicated irregular wave *** again main features of the complicated irregular wave train are reproduced compared with experiment carried out in the new deepwater experimental basin at Shanghai Jiao Tong *** the simulation,dynamic mesh method is enabled to model the piston-type wave-maker,the Volume Of Fluid（VOF） method is employed to capture the free surface and a dissipation zone is introduced to deal with wave reflection.

关键词： numerical wave tank irregular wave train Volume of Fluid (VOF) dynamic mesh

Preparation and Characterization of Multi-layer Poly(arylene sulfide sulfone) Nanofibers Membranes for Liquid Filtration

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2019年第12期37卷 1248-1256,I0006页

作者： Zhen-Yan Liu Zhi-Mei Wei Xiao-jun Wang Gang Zhang Sheng-Ru long Jie yang College of Polymer Science and Engineering Sichuan UniversityChengdu 610065China Analytical&Testing Center Sichuan UniversityChengdu 610064China State Key Laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065China

Owing to the excellent filtration performance and low energy cost,polymeric nanofibers microfiltration(MF)membranes have attracted increasing ***(arylene sulfide sulfone)(PASS),as one of the structurally modified polymers based on poly-(phenylene sulfide)(PPS),has been selected as the raw material to fabricate nanofibers MF membranes via electrospun *** effects of PASS solution and the electrospinning processing parameters on the structural morphology of nanofibers were investigated in *** average diameter of PASS nanofibers was(296±46)nm under the optimal condition:polymer concentration of 0.27 g·m L^–1 PASS/DMI,applied voltage of 20 kV,and speed of collector drum of 300 r·min^–*** then the multi-layer PASS nanofibers MF membranes were fabricated from cold-pressing the optimized PASS nanofibers(as-prepared PASS nanofibers)*** morphology,porosity,pore size,mechanical properties,and surface wettability of the multi-layer PASS nanofibers MF membranes could be tuned by the layers of as-prepared nanofibers *** results demonstrated that the membrane with 6 layers(marked as PASS-6)exhibited the smallest porosity,smallest pore size,highest mechanical property,and best surface ***,the multi-layer PASS nanofibers MF membranes showed that the rejection ratio gradually increased,while the pure water flux decreased with increasing membranes *** PASS-6 membrane exhibited large water flux of 747.76 L·m^–2·h^–1 and high separation efficiency of 99.9%to 0.2μm particles,making it a promising candidate for microfilter.

关键词： Poly(arylene sulfide sulfone) Electrospinning Nanofibers membranes Microfiltration