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Chinese Journal of Chemistry 2024年第17期42卷 1999-2004页

作者： Ke-Xin Xu cheng Yuan Hao Lou Feng-Zao Chen Ling Zhang Guangxu Chen De-Man Han wei-wei Zhao state Key Laboratory of Analytical Chemistry for Life Science School of Chemistry and Chemical EngineeringNanjing UniversityNanjingJiangsu210023China School of Pharmaceutical and Chemical Engineering Taizhou UniversityTaizhouJjiangsu 318000China School of Environment and Energy State Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Atmospheric Environment and Pollution ControlSouth China University of TechnologyGuangzhouGuangdong 510006China

We report herein the first observation of MoF nanozyme enabling dual-functional photo-induced charge transfer and biomimetic precipitation for advanced organic photoelectrochemical transistor(OPECT)***,Fe/Co-MIL-88,serving simultaneously as the semiconductor and nanozyme,was explored as a dual-functional gating module in *** light llumination,it could accelerate the charge transfer of the photogate to produce enhanced photo-induced ***,its catalytic property could efficiently produce biomimetic precipitation to block the nanopores in Fe/Co-MIL-88 and thus alter the device characteristics.

关键词： Metal-organic frameworks Nanozymes Organic transistor Photoelectrochemical Biosensing Electrodes

Thermoelectric transport properties of p-type Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3) high entropy compounds

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Rare Metals 2024年第7期43卷 3415-3421页

作者： Feng Jiang cheng-Liang Xia Yong-Bin Zhu Jun Li Yue Chen wei-Shu Liu Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China Department of Mechanical Engineering The University of Hong KongHong Kong 999077China Guangdong Provincial Key Laboratory of Functional Oxide Materials and Devices Southern University of Science and TechnologyShenzhen 518055China

The introduction of entropy concept into thermoelectric materials recently has attracted broad ***,we showed the phase diagram of the ternary systems of Bi_(2)Se_(3)-Sb_(2)Se_(3)-In_(2)Se_(3).Among the high entropy compounds (HECs),we have identified an intrinsic p-type region near our previously reported Bi_(0.8)Sb_(0.8)In_(0.4)Se_(3) in the phase diagram.

关键词： entropy (3) compounds

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噪声条件下的运动模糊参数同步辨识的新算法

计算机应用 2012年第12期32卷 3381-3384,3410页

作者：葛成伟程浩刘国庆南京工业大学电子与信息工程学院南京210009 南京工业大学理学院南京210009

在噪声污染的情况下,匀速直线运动模糊图像频谱中的暗黑色条纹变得模糊甚至消失,根据暗黑色条纹的特征来估计运动模糊参数的方法将失效。由此,提出了一种噪声条件下的运动模糊参数同步辨识的新算法,该算法以运动模糊图像频谱作为研究对... 详细信息

在噪声污染的情况下,匀速直线运动模糊图像频谱中的暗黑色条纹变得模糊甚至消失,根据暗黑色条纹的特征来估计运动模糊参数的方法将失效。由此,提出了一种噪声条件下的运动模糊参数同步辨识的新算法,该算法以运动模糊图像频谱作为研究对象,首先利用区域生长算法提取频谱中白色长条区域的轮廓,再计算其最小面积外接矩形,根据最小外接矩形的长度、宽度及倾斜度等参数同步估计运动模糊参数:模糊方向与模糊尺度。实验结果表明,对不同信噪比、不同模糊方向和模糊尺度的运动模糊图像,该算法可以较精确地估计出模糊参数,且具有很好的抗噪声鲁棒性。

关键词：运动模糊参数区域生长算法白色长条区域最小外接矩形同步估计

Discriminative explicit instance selection for implicit discourse relation classification

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Frontiers of Computer Science 2024年第4期18卷 129-138页

作者： wei SONG Hongfei HAN Xu HAN Miaomiao cheng Jiefu GONG Shijin WANG Ting LIU Information Engineering College Capital Normal UniversityBeijing 100048China iFLYTEK AI Research Institute Hefei 230088China Research Center for Social Computing and Information Retrieval Harbin Institute of TechnologyHarbin 150006China

Discourse relation classification is a fundamental task for discourse analysis,which is essential for understanding the structure and connection of *** discourse relation classification aims to determine the relationship between adjacent sentences and is very challenging because it lacks explicit discourse connectives as linguistic cues and sufficient annotated training *** this paper,we propose a discriminative instance selection method to construct synthetic implicit discourse relation data from easy-to-collect explicit discourse *** expanded instance consists of an argument pair and its sense *** introduce the argument pair type classification task,which aims to distinguish between implicit and explicit argument pairs and select the explicit argument pairs that are most similar to natural implicit argument pairs for data *** also propose a simple label-smoothing technique to assign robust sense labels for the selected argument *** evaluate our method on PDTB 2.0 and PDTB *** results show that our method can consistently improve the performance of the baseline model,and achieve competitive results with the state-of-the-art models.

关键词： discourse analysis PDTB discourse relation implicit discourse relation classification data expansion

Smart beam via electrically addressing the dye-doped and polymer-stabilized cholesteric liquid crystals

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Chinese Optics Letters 2024年第5期22卷 111-116页

作者：彭程徐春庭胡伟 College of Engineering and Applied Sciences Nanjing UniversityNanjing 210023China

Smart beams play a vital role in modern intelligent vehicles and have recently attracted significant attention.A spatial light modulator with high optical efficiency,low cost,and compact size is crucial for designing smart ***,we mix cholesteric liquid crystals with dichroic black dye and a *** UV polymerization,the sample exhibits a low driving voltage of 26 V,a high transmittance of over 70%,and an On-off ratio over 280,thanks to the joint contribution of both the absorption and the scattering effect.A smart beam device is demonstrated by electrically addressing the dye-doped and polymer-stabilized cholesteric liquid crystal with pixelated *** patterns with arbitrary designs are projected *** switching time reaches several tens of *** strategy brings new designs to intelligent vehicles and may also inspire applications in public information displays,advertising,and even AR/VR displays.

关键词： cholesteric liquid crystal spatial light modulation smart beam dye guest-host effect

Bone marrow mesenchymal stem cells in treatment of peripheral nerve injury

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World Journal of Stem Cells 2024年第8期16卷 799-810页

作者： Xiong-Fei Zou Bao-Zhong Zhang Wen-wei Qian Florence Mei cheng Department of Orthopedic Surgery Peking Union Medical College HospitalBeijing 100730China College of Nursing The Ohio State UniversityOhioOH 43210United States

Peripheral nerve injury(PNI)is a common neurological disorder and complete functional recovery is difficult to *** recent years,bone marrow mesenchymal stem cells(BMSCs)have emerged as ideal seed cells for PNI treatment due to their strong differentiation potential and autologous trans-plantation *** review aims to summarize the molecular mechanisms by which BMSCs mediate nerve repair in *** key mechanisms discussed include the differentiation of BMSCs into multiple types of nerve cells to promote repair of nerve *** also create a microenvironment suitable for neuronal survival and regeneration through the secretion of neurotrophic factors,extracellular matrix molecules,and adhesion ***,BMSCs release pro-angiogenic factors to promote the formation of new blood *** modulate cytokine expression and regulate macrophage polarization,leading to ***,BMSCs synthesize and release proteins related to myelin sheath formation and axonal regeneration,thereby promoting neuronal repair and ***,this review explores methods of applying BMSCs in PNI treatment,including direct cell trans-plantation into the injured neural tissue,implantation of BMSCs into nerve conduits providing support,and the application of genetically modified BMSCs,among *** findings confirm the potential of BMSCs in treating ***,with the development of this field,it is crucial to address issues related to BMSC therapy,including establishing standards for extracting,identifying,and cultivating BMSCs,as well as selecting application methods for BMSCs in PNI such as direct transplantation,tissue engineering,and genetic *** these issues will help translate current preclinical research results into clinical practice,providing new and effective treatment strategies for patients with PNI.

关键词： Bone marrow mesenchymal stem cells Peripheral nerve injury Schwann cells Myelin sheath Tissue engineering

Room-temperature ferromagnetism and piezoelectricity in metalfree 2D semiconductor crystalline carbon nitride

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Nano Research 2024年第6期17卷 5670-5679页

作者： Yong Wang Dingyi Yang wei Xu Yongjie Xu Yu Zhang Zixuan cheng Yizhang Wu Xuetao Gan wei Zhong Yan Liu genquan Han Yue Hao Wide Bandgap Semiconductor Technology Disciplines State Key Laboratory School of MicroelectronicsAcademy of Advanced Interdisciplinary ResearchXidian UniversityXi’an 710071China Emerging Device and Chip Laboratory Hangzhou Institute of TechnologyXidian UniversityHangzhou 311200China INRS Centre for Energy Materials and Telecommunications1650 Boul.Lionel BouletVarennesQC J3X 1P7Canada National Laboratory of Solid State Microstructures Collaborative Innovation Center of Advanced Microstructures and Jiangsu Provincial Key Laboratory for NanotechnologyNanjing UniversityNanjing 210093China School of Education Jiangsu Open UniversityNanjing 210036China Department of Physics Shaanxi University of Science and TechnologyXi’an 710021China Department of Applied Physical Sciences The University of North Carolina at Chapel HillChapel HillNC 27514USA Key Laboratory of Light Field Manipulation and Information Acquisition Ministry of Industry and Information Technologyand Shaanxi Key Laboratory of Optical Information TechnologySchool of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi'an 710129 China

Two-dimensional(2D)materials that combine ferromagnetic,semiconductor,and piezoelectric properties hold significant potential for both fundamental research and spin electronic ***,the majority of reported 2D ferromagnetic-semiconductor-piezoelectric materials rely on d-electron systems,which limits their practical applications due to a Curie temperature lower than room temperature(RT).Here,we report a high-crystallinity carbon nitride(CCN)material based on sp-electrons using a chemical vapor deposition *** exhibits a band gap of 1.8 eV and has been confirmed to possess substantial in-plane and out-of-plane ***,we acquired clear evidences of ferromagnetic behavior at room *** structural characterizations combined with theoretical calculations reveal that incorporating structural oxygen into the highly ordered heptazine structure causes partial substitution of nitrogen sites,which is primarily responsible for generating room-temperature ferromagnetism and *** a result,the strain in wrinkles can effectively modulate the domain behavior and piezoelectric potential at room *** addition of RT ferromagnetic-semiconductor-piezoelectric material based on sp-electrons to the family of two-dimensional materials opens up numerous possibilities for novel applications in fundamental research and spin electronic devices.

关键词： crystallinity carbon nitride room-temperature ferromagnetism piezoelectricity magnetic force microscopy density functional theory(DFT)calculations

Adaptive Memetic Algorithm with Dual-Level Local Search for Cooperative Route Planning of Multi-Robot Surveillance Systems

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Complex System Modeling and Simulation 2024年第2期4卷 210-221页

作者： Hao cheng Jin Yi wei Xia Huayan Pu Jun Luo the State Key Laboratory of Mechanical Transmission for Advanced Equipment Chongqing UniversityChongqing 400044China the Department of Electronics Information and BioengineeringPolitecnico di MilanoMilano 20133Italy

The heightened autonomy and robust adaptability inherent in a multi-robot system have proven pivotal in disaster search and rescue,agricultural irrigation,and environmental *** study addresses the coordination of multiple robots for the surveillance of various key target positions within an *** involves the allocation of target positions among robots and the concurrent planning of routes for each *** tackle these challenges,we formulate a unified optimization model addressing both target allocation and route ***,we introduce an adaptive memetic algorithm featuring dual-level local search *** algorithm operates independently among and within robots to effectively solve the optimization problem associated with *** proposed method’s efficacy is substantiated through comparative numerical experiments and simulated experiments involving diverse scales of robot teams and different target positions.

关键词： multi-robot system surveillance memetic algorithm

Physiological and Biochemical Responses of Perennial Ryegrass Mixed Planting with Legumes under Heavy Metal Pollution

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Phyton-International Journal of Experimental Botany 2024年第7期93卷 1749-1765页

作者： Yi Xi Li Zhang Yanhong Xu wei cheng Chao Chen College of Animal Science Guizhou UniversityGuiyang550025China

In artiﬁcially controlled pot experiments,perennial ryegrass was mixed with other leguminous plants(white clo-ver and alfalfa)and treated with lead,zinc and cadmium(337 mg·kg^(-1),648 mg·kg^(-1),and 9 mg·kg^(-1),respectively)to simulate compound pollution *** results showed that the concentrations of heavy metals,trans-port factors,and bioconcentration factors in mixed planting of ryegrass decreased compared with those in *** of whether heavy metal pollution was introduced,mixed planting increased the aboveground and underground biomasses of *** different mixed planting treatments had no signiﬁcant impact on the chlorophyll concentration of *** mowing time,mixed planting treatment,and heavy metal treatment had impacts on antioxidant and osmotic adjustment substances,and there were some *** mixed planting treatment did not signiﬁcantly affect glutathione concentration,cysteine concentration,or nonprotein *** planting generally increased the nitrogen and phosphorus concentrations of ryegrass while reducing the stoichiometric ratio of carbon,nitrogen,and *** results suggest that the mixed planting of ryegrass with legumes promotes the growth of ryegrass in the presence of high concentrations of heavy metal ***,it does not enhance the ability of ryegrass to remediate heavy metal pollution in the soil.

关键词： Perennial ryegrass mixed planting phytoremediation lead zinc and cadmium soil pollution

A synthesis of the Cretaceous wildfire record related to atmospheric oxygen levels?

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Journal of Palaeogeography 2024年第1期13卷 149-164页

作者： Da-wei Lü Wen-Xu Du Zhi-Hui Zhang Yuan Gao Tian-Tian Wang Jin-cheng Xu Ao-Cong Zhang cheng-Shan Wang Shandong Provincial Key Laboratory of Depositional Mineralization and Sedimentary Minerals College of Earth Sciences and EngineeringShandong University of Science and TechnologyQingdao 266590Shandong ProvinceChina School of Earth Sciences and Resources China University of GeosciencesBejing 100083China Institute of Earth Sciences China University of Geosciences(Bejing)Beijing 100083China

The Cretaceous was a significant greenhouse period in Earth's history with higher atmospheric CO_(2) levels and temperatures than today. Although evidence of combustion has been widely described from the Cretaceous deposits, our understanding of the spatiotemporal diversification pattern and process of the Cretaceous wildfires is still limited. In this study, we comprehensively synthesize a total of 271 published Cretaceous wildfire occurrences based on the by-products of burning, including fossil charcoal, pyrogenic inertinite(fossil charcoal in coal), and pyrogenic polycyclic aromatic hydrocarbons(PAHs). Spatially, the dataset shows a distinctive distribution of reported wildfire evidence characterized by high concentration in the middle latitudinal areas of the Northern Hemisphere(30°N-60°N) over the Cretaceous. Temporally, an overall increasing trend of the reported wildfire data from the Early Cretaceous to the Late Cretaceous is coincident with higher atmospheric O_(2) levels. However, the spatial and temporal patterns may result from many types of factors, such as taphonomy, preservation, and researcher biases, instead of a real picture of the Cretaceous wildfire evolution. To better understand the spatiotemporal diversification of the Cretaceous wildfire, more investigations on the record of wildfire occurrences during this period would be necessary in the future.

关键词： Wildfire Cretaceous Atmospheric oxygen Taphonomy Charcoal