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Science China Chemistry 2021年第7期64卷 1192-1199页

作者： Shihao Chen Lingwei Feng Tao Jia jianhua jing Zhicheng Hu Kai Zhang Fei Huang Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China

Side-chain engineering has been considered as one of the most promising strategies to optimize non-fullerene small-molecule acceptors(NFSMAs).Previous efforts were focused on the optimization of alkyl-chain length,shape,and branching *** this work,we propose that asymmetric side-chain engineering can effectively tune the properties of NFSMAs and improve the power conversion efficiency(PCE)for binary non-fullerene polymer solar cells(NFPSCs).Specifically,by introducing asymmetric side chains into the central core,both of the absorption spectra and molecule orientation of NFSMAs are efficiently *** blended with polymer donor PM6,NFPSCs with EH-HD-4F(2-ethylhexyl and 2-hexyldecyl side chains)demonstrate a champion PCE of 18.38%with a short-circuit current density(J_(SC))of 27.48 mA cm^(-2),an open circuit voltage(V_(OC))of 0.84 V,and a fill factor(FF)of *** studies manifest that the proper asymmetric side chains in NFSMAs could induce more favorable face-on molecule orientation,enhance carrier mobilities,balance charge transport,and reduce recombination losses.

关键词： polymer solar cells small-molecular acceptors asymmetric side-chains

Solution sequential deposited organic photovoltaics:From morphology control to large-area modules

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eScience 2023年第4期3卷 39-64页

作者： jianhua jing Yuejia Dou Shihao Chen Kai Zhang Fei Huang Institute of Polymer Optoelectronic Materials and Devices State Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640PR China

Organic optoelectronic materials enable cutting-edge,low-cost organic photodiodes,including organic solar cells(OSCs)for energy conversion and organic photodetectors(OPDs)for image *** bulk heterojunction(BHJ)structure,derived by blending donor and acceptor materials in a single solution,has dominated in the construction of active layer,but its morphological evolution during film formation poses a great challenge for obtaining an ideal nanoscale morphology to maximize exciton dissociation and minimize nongeminate *** sequential deposition(SSD)can deliver favorable p–i–n vertical component distribution with abundant donor/acceptor interfaces and relatively neat donor and acceptor phases near electrodes,making it highly promising for excellent device performance and long-term *** on the p–i–n structure,this review provides a systematic retrospect on regulating this morphology in SSD by summarizing solvent selection and additive *** methods have been successfully implemented to achieve well-defined morphology in ternary OSCs,all-polymer solar cells,and *** provide a practical perspective,comparative studies of device stability with BHJ and SSD film are also discussed,and we review influential progress in blade-coating techniques and large-area modules to shed light on industrial ***,challenging issues are out-lined for further research toward eventual commercialization.

关键词： Organic solar cells Organic photodetectors Solution sequential deposition Solution processed planar heterojunction Morphology control

师幼交往中无意识性别心理与两性和谐教育环境的构建

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学前教育研究 2005年第12期 9-11页

作者：荆建华河南教育学院科研处 450014

幼儿园女教师占绝对优势的现实会在师幼交往和教师教育行为中无意识地影响幼儿性别角色的形成。两性和谐的教育环境对于实现教育领域的性别平等具有重要意义,教师应树立先进的性别观念,并努力培养双性化的行为模式,在师幼交往中通过具... 详细信息

幼儿园女教师占绝对优势的现实会在师幼交往和教师教育行为中无意识地影响幼儿性别角色的形成。两性和谐的教育环境对于实现教育领域的性别平等具有重要意义,教师应树立先进的性别观念,并努力培养双性化的行为模式,在师幼交往中通过具体的教育行为积极影响幼儿性别角色的社会化过程,以利于幼儿人格的全面和谐健康发展。

关键词：师幼交往无意识性别心理两性和谐

The response of roots and the rhizosphere environment to integrative cultivation practices in paddy rice

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Journal of Integrative Agriculture 2024年第6期23卷 1879-1896页

作者： Hanzhu Gu Xian Wang Minhao Zhang Wenjiang jing Hao Wu Zhilin Xiao Weiyang Zhang Junfei Gu Lijun Liu Zhiqin Wang jianhua Zhang Jianchang Yang Hao Zhang Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Jiangsu Co-Innovation Center for Modern Production Technology of Grain Crops/Agricultural College Yangzhou UniversityYangzhou 225009China Taizhou Institute of Agricultural Science Jiangsu Academy of Agricultural SciencesTaizhou 225300China State Key Laboratory of Agrobiotechnology School of Life SciencesThe Chinese University of Hong KongShatinHong Kong 999077China Department of Biology Faculty of ScienceHong Kong Baptist UniversityKowloonHong Kong 999077China

Integrative cultivation practices(ICPs)are essential for enhancing cereal yield and resource use ***,the effects of ICP on the rhizosphere environment and roots of paddy rice are still poorly *** this study,four rice varieties were produced in the *** variety was treated with six different cultivation techniques,including zero nitrogen application(0 N),local farmers’practice(LFP),nitrogen reduction(NR),and three progressive ICP techniques comprised of enhanced fertilizer N practice and increased plant density(ICP1),a treatment similar to ICP1 but with alternate wetting and moderate drying instead of continuous flooding(ICP2),and the same practices as ICP2 with the application of organic fertilizer(ICP3).The ICPs had greater grain production and nitrogen use efficiency than the other three *** length,dry weight,root diameter,activity of root oxidation,root bleeding rate,zeatin and zeatin riboside compositions,and total organic acids in root exudates were elevated with the introduction of the successive cultivation *** enhanced nitrate nitrogen,the activities of urease and invertase,and the diversity of microbes(bacteria)in rhizosphere and non-rhizosphere soil,while reducing the ammonium nitrogen *** nutrient contents(ammonium nitrogen,total nitrogen,total potassium,total phosphorus,nitrate,and available phosphorus)and urease activity in rhizosphere soil were reduced in all treatments in comparison with the non-rhizosphere soil,but the invertase activity and bacterial diversity were *** main root morphology and physiology,and the ammonium nitrogen contents in rhizosphere soil at the primary stages were closely correlated with grain yield and internal nitrogen use *** findings suggest that the coordinated enhancement of the root system and the environment of the rhizosphere under integrative cultivation approaches may lead to higher rice production.

关键词： rice(Oryza sativa L.) nitrogen use efficiency grain yield integrative cultivation practices roots

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福尔马林固定组织电镜标本制作法

湖南医科大学学报 1999年第6期24卷 581-582页

作者：井建华湖南医科大学电镜室湖南长沙 410078

本文介绍了一种能使福尔马林固定、石蜡包埋的组织达到电镜观察要求的样品制备方法。对于取材新鲜、固定及时的石蜡包埋组织,脱蜡后再以4 % 戊二醛固定24 h ,1 % 锇酸后固定1 ～2 h ,再常规丙酮脱水、Epon812 包埋、超薄切片,可获得基... 详细信息

本文介绍了一种能使福尔马林固定、石蜡包埋的组织达到电镜观察要求的样品制备方法。对于取材新鲜、固定及时的石蜡包埋组织,脱蜡后再以4 % 戊二醛固定24 h ,1 % 锇酸后固定1 ～2 h ,再常规丙酮脱水、Epon812 包埋、超薄切片,可获得基本上符合诊断要求的超微结构。此外。

关键词：电子显微镜福尔马林石蜡包埋

Three-Dimensional Multi-Phase Microscopic Simulation of Service Life of Recycled Large Aggregate Self-Compacting Concrete

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Journal of Materials Science and Chemical Engineering 2024年第4期12卷 126-135页

作者： jing Li Lina Gao Libo Liu Liao Zhang jianhua Zheng jing Gao College of Pipeline and Civil Engineering China University of Petroleum (East China) Qingdao China China Huanqiu Contracting & Engineering Co. Ltd. Beijing China School of Civil and Transportation Engineering Beijing University of Civil Engineering and Architecture Beijing China The Fourth Construction Co. Ltd. of China Construction Eighth Engineering Division Qingdao China

Recycled large aggregate self-compacting concrete (RLA-SCC) within multiple weak areas. These weak areas have poor resistance to chloride ion erosion, which affects the service life of RLA-SCC in the marine environment. A three-dimensional multi-phase mesoscopic numerical model of RLA-SCC was established to simulate the chloride ions transportation in concrete. Experiments of RLA-SCC immersing in chloride solution were carried out to verify the simulation results. The effects of recycled large aggregate (RLA) content and RLA particle size on the service life of concrete were explored. The results indicate that the mesoscopic numerical simulation results are in good agreement with the experimental results. At the same depth, the closer to the surface of the RLA, the greater the chloride ion concentration. The service life of RLA-SCC in marine environment decreases with the increase of RLA content. Compared with the service life of 20% content, the service life of 25% and 30% content decreased by 20% and 42% respectively. Increasing the particle size of RLA can effectively improve the service life of RLA-SCC in chloride environment. Compared with the service life of 50 mm particle size, the service life of 70 mm and 90 mm increased by 61% and 163%, respectively. .

关键词： Recycled Large Aggregate Self-Compacting Concrete Mesoscopic Mode Chloride Ion Diffusion Numerical Analysis

Remaining Useful Life Prediction of Rail Based on Improved Pulse Separable Convolution Enhanced Transformer Encoder

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Journal of Transportation Technologies 2024年第2期14卷 137-160页

作者： Zhongmei Wang Min Li jing He jianhua Liu Lin Jia College of Railway Transportation Hunan University of Technology Zhuzhou Hunan College of Electrical and Information Engineering Hunan University of Technology Zhuzhou Hunan

In order to prevent possible casualties and economic loss, it is critical to accurate prediction of the Remaining Useful Life (RUL) in rail prognostics health management. However, the traditional neural networks is difficult to capture the long-term dependency relationship of the time series in the modeling of the long time series of rail damage, due to the coupling relationship of multi-channel data from multiple sensors. Here, in this paper, a novel RUL prediction model with an enhanced pulse separable convolution is used to solve this issue. Firstly, a coding module based on the improved pulse separable convolutional network is established to effectively model the relationship between the data. To enhance the network, an alternate gradient back propagation method is implemented. And an efficient channel attention (ECA) mechanism is developed for better emphasizing the useful pulse characteristics. Secondly, an optimized Transformer encoder was designed to serve as the backbone of the model. It has the ability to efficiently understand relationship between the data itself and each other at each time step of long time series with a full life cycle. More importantly, the Transformer encoder is improved by integrating pulse maximum pooling to retain more pulse timing characteristics. Finally, based on the characteristics of the front layer, the final predicted RUL value was provided and served as the end-to-end solution. The empirical findings validate the efficacy of the suggested approach in forecasting the rail RUL, surpassing various existing data-driven prognostication techniques. Meanwhile, the proposed method also shows good generalization performance on PHM2012 bearing data set.

关键词： Equipment Health Prognostics Remaining Useful Life Prediction Pulse Separable Convolution Attention Mechanism Transformer Encoder

Improvement of Two-step Parallel Thinning Algorithm for Military Map Contours

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Improvement of Two-step Parallel Thinning Algorithm for Mili...

Bearing fault diagnosis based on a multiple-constraint modal-invariant graph convolutional fusion network

2009中国控制与决策会议

作者： Xie jianhua,Cai Na,jing Yuanwei Information Science and Engineering,Northeastern University,Shenyang 110004,China

＜正＞A fast parallel thinning algorithm is analyzed in this *** improved algorithm with two-step method is proposed to thin the contour of military *** make programming easy,the deleting array is given and the operation speed of the algorithm is *** algorithm is programmed with Visual C++6.0 and a good result is obtained. There is no distorted skeleton and excessive corrosion phenomenon,and the connectedness is satisfied.

关键词： Thinning Parallel algorithm Skeleton Connectedness

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High-Speed Railway 2024年第2期2卷 92-100页

作者： Zhongmei Wang Pengxuan Nie jianhua Liu jing He Haibo Wu Pengfei Guo College of Railway Transportation Hunan University of TechnologyZhuzhou 412007China Wuxi Maimurun Environmental Technology Co. LtdWuxi 214000China

Multisensor data fusionmethod can improve the accuracy of bearing fault diagnosis,in order to address the problems of single-sensor data types and the insufficient exploration of redundancy and complementarity between different modal data in most existing multisensor data fusion methods for bearing fault diagnosis,a bearing fault diagnosis method based on a Multiple-Constraint Modal-Invariant Graph Convolutional Fusion Network(MCMI-GCFN)is proposed in this ***,a Convolutional Autoencoder(CAE)and Squeeze-and-Excitation Block(SE block)are used to extract features of raw current and vibration ***,the model introduces source domain classifiers and domain discriminators to capture modal invariance between different modal data based on domain adversarial training,making use of the redundancy and complementarity between multimodal ***,the spatial aggregation property of Graph Convolutional Neural Networks(GCN)is utilized to capture the dependency relationship between current and vibration modes with similar time step features for accurately fusing contextual semantic ***,the validation is conducted on the public bearing damage current and vibration dataset from Paderborn *** experimental results showed that the delivered fusion method achieved a bearing fault diagnosis accuracy of 99.6%,which was about 9%–11.4%better than that with nonfusion methods.

关键词： Bearing fault diagnosis Data fusion Domain adversarial training GCN

Effects of temperature and precipitation on drought trends in Xinjiang, China

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Journal of Arid Land 2024年第8期16卷 1098-1117页

作者： YANG jianhua LI Yaqian ZHOU Lei ZHANG Zhenqing ZHOU Hongkui WU Jianjun Academy of Eco-civilization Development for jing-Jin-Ji Megalopolis Tianjin Normal UniversityTianjin 300387China School of Geomatics and Urban Spatial Informatics Beijing University of Civil Engineering and ArchitectureBeijing 100044China Institute of Digital Agriculture Zhejiang Academy of Agricultural SciencesHangzhou 310021China Faculty of Geographical Science Beijing Normal UniversityBeijing 100875China

The characteristics of drought in Xinjiang Uygur Autonomous Region(Xinjiang),China have changed due to changes in the spatiotemporal patterns of temperature and precipitation,however,the effects of temperature and precipitation—the two most important factors influencing drought—have not yet been thoroughly explored in this *** this study,we first calculated the standard precipitation evapotranspiration index(SPEI)in Xinjiang from 1980 to 2020 based on the monthly precipitation and monthly average *** the spatiotemporal characteristics of temperature,precipitation,and drought in Xinjiang from 1980 to 2020 were analyzed using the Theil-Sen median trend analysis method and Mann-Kendall test.A series of SPEI-based scenario-setting experiments by combining the observed and detrended climatic factors were utilized to quantify the effects of individual climatic factor(i.e.,temperature and precipitation).The results revealed that both temperature and precipitation had experienced increasing trends at most meteorological stations in Xinjiang from 1980 to 2020,especially the spring temperature and winter *** to the influence of temperature,trends of intensifying drought have been observed at spring,summer,autumn,and annual *** addition,the drought trends in southern Xinjiang were more notable than those in northern *** 1980 to 2020,temperature trends exacerbated drought trends,but precipitation trends alleviated drought trends in *** meteorological stations in Xinjiang exhibited temperature-dominated drought trend except in winter;in winter,most stations exhibited precipitation-dominated wetting *** findings of this study highlight the importance of the impact of temperature on drought in Xinjiang and deepen the understanding of the factors influencing drought.

关键词： standardized precipitation evapotranspiration index(SPEI) climate change drought characteristics trend analysis arid area temperature trend contribution analysis