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Building biointegration of Fe_(2)O_(3)-FeOOH coated titanium implant by regulating NIR irradiation in an infected model

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Bioactive Materials 2022年第2期7卷 1-11页

作者： Yang Xue Jun Chen Tiexin Ding Mengting Mao shengbo zhu Jianhong Zhou Lan Zhang Yong Han State-key Laboratory for Mechanical Behavior of Materials Xi’an Jiaotong UniversityXi’an 710049China Department of Osteology Xi’an People’s Hospital(Xi’an No.4 Hospital)Xi’an710100China Department of Osteology Tangdu HospitalFourth Military Medical UniversityXi’an710038China Institute of Physics&Optoelectronics Technology Advanced Titanium Alloys and Functional Coatings Cooperative Innovation CenterBaoji University of Arts and SciencesBaoji721016China

Killing bacteria,eliminating biofilm and building soft tissue integration are very important for percutaneous implants which service in a complicated *** order to endow Ti implants with above abilities,multifunctional coatings consisted of Fe_(2)O_(3)-FeOOH nanograins as an outer layer and Zn doped microporous TiO2 as an inner layer were fabricated by micro-arc oxidation,hydrothermal treatment and annealing *** microstructures,physicochemical properties and photothermal response of the coatings were observed;their antibacterial efficiencies and cell response in vitro as well as biofilm elimination and soft tissue integration in vivo were *** results show that with the increased annealing temperature,coating morphologies didn’t change obviously,but lattices of β-FeOOH gradually disorganized into amorphous state and rearranged to form Fe_(2)O_(3).The coating annealed at 450℃(MA450)had nanocrystallized Fe_(2)O_(3) and β-*** a proper NIR irradiation strategy,MA450 killed adhered bacteria efficiently and increased fibroblast behaviors via up-regulating fibrogenic-related genes in vitro;in an infected model,MA450 eliminated biofilm,reduced inflammatory response and improved biointegration with soft *** good performance of MA450 was due to a synergic effect of photothermal response and released ions(Zn^(2+)and Fe^(3+)).

关键词： Photothermal Fe_(2)O_(3)-FeOOH Antibacterial Biointegration Soft tissue

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New insight into the origin and evolution of the flora and fauna of Hainan Island, China

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Science China Earth Sciences 2025年第1期68卷 52-61页

作者： Hua zhu Center for Integrative Conservation Xishuangbanna Tropical Botanical Garden Chinese Academy of Sciences Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation Yunnan Key Laboratory for the Conservation of Tropical Rainforests and Asian Elephants

The origin of the biota of Hainan Island, China, remains a fundamental scientific problem. Comparative studies on the biota, geological tectonics, and paleomagnetism proposed that during the Eocene, Hainan Island connected Vietnam and Guangxi, and then moved to the southeast to reach its present location. This review mainly discusses its biota origin from molecular phylogeny and palaeobotanical research. The formation and evolution of the biological groups of Hainan Island were identified via research on their genomes, phylogeny, and molecular biogeography. This research showed that the genera and species that appeared and diverged early in their evolution(i.e., before the Miocene) can be explained by the land connection between Hainan Island, Vietnam, and Guangxi during the Eocene-Oligocene. According to Southeast Asian tectonic theory, in the Middle Miocene(at about 15 million years ago), Hainan Island had moved to its present position. The population and genetic divergence of species with late divergence times(after 15 Ma) can be reasonably explained by the close proximity(or land connection) between Hainan Island and the Leizhou Peninsula, enabling genetic communication between Hainan Island and the Chinese mainland, but have exceptional cases. Conclusions have been obtained through palaeobotanical studies, showing that in the Eocene-Oligocene period, southwest China and Hainan Island had subtropical vegetation and flora. However, the fossil group in southeast China(in Maoming, near present-day Hainan Island) in the Late Eocene indicated a tropical rainforest vegetation and flora. This suggests that in the Paleogene, Hainan Island may have been located near or on the southwest border of Guangxi and northern Vietnam, rather than in its present location. The floristic division of the flora of Hainan Island basically presents a northeast-southwest inclined distribution pattern. This pattern can be explained by the counterclockwise rotation of Hainan Island during i

关键词： Molecular phylogeny Biogeography Paleobotany Origin of flora and fauna Hainan Island of China

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正负样本差异特征双径向融合的自监督缺陷检测方法

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电子测量与仪器学报 2024年第5期38卷 201-209页

作者：高港魏利胜朱圣博安徽工程大学电气工程学院芜湖241000

针对纹理图像表面划痕、裂纹等缺陷不规则、随机分布,导致缺陷检测准确率低的问题,研究一种基于正负样本差异特征双径向融合的自监督缺陷检测方法。首先,采用Otsu阈值分割提取图像前景信息,并以DTD数据集中的纹理图像或数据增强后的正... 详细信息

针对纹理图像表面划痕、裂纹等缺陷不规则、随机分布,导致缺陷检测准确率低的问题,研究一种基于正负样本差异特征双径向融合的自监督缺陷检测方法。首先,采用Otsu阈值分割提取图像前景信息,并以DTD数据集中的纹理图像或数据增强后的正样本叠加Perlin噪声,对正样本图像进行缺陷模拟以合成负样本;然后,利用正负样本经编码器输出的中间特征,计算均方误差进行特征匹配,结合坐标注意力(coordinate attention, CA)和双径向路径聚合网络(path aggregation network, PANet)加强匹配特征的信息融合;最后,将融合特征与编码器输出的低层和高层特征一同输入解码器,优化调整Focal、L1和Dice损失函数权重,实现对缺陷掩码更精准地预测。实验显示,所提模型在MVTec AD数据集纹理类别上的平均图像级、像素级AUROC分别达到了0.995、0.968,相较于其他缺陷检测模型,分类和分割准确率均有提升,表明所提方法在纹理缺陷检测方面的有效性。

关键词：缺陷检测合成负样本 CA PANet 加权损失

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Modification of Maxwell model for conductivity prediction of carbon nanotubes-filled polymer composites with tunneling effect

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Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 25-36页

作者： Jue zhu Longyuan LI Ningtao zhu Zhejiang Provincial Engineering Research Center for the Safety of Pressure Vessel and Pipeline Key Laboratory of Impact and Safety Engineering (Ningbo University) Ministry of Education School of Engineering Computing and Mathematics University of Plymouth Xi'an Zhanshi Testing & Engineering Co.Ltd.

Carbon nanotubes(CNTs) have garnered great attention in recent years due to their outstanding electrical, thermal, and mechanical properties. The incorporation of small amounts of CNTs in polymers can substantially improve the sensitivity of the polymer's electrical conductivity. This paper presents a modified Maxwell model to evaluate the electrical conductivity of CNTs-filled polymer composites by introducing a transition zone to account for the tunneling effect. In this modified Maxwell model, the CNTs-filled polymer composite is modeled as a three-phase composite, consisting of a matrix(polymer), inclusions(CNTs), and a transition zone(tunneling zone). The effective electrical conductivity(EEC) of the composite is calculated based on the volume fractions and electrical conductivities of the matrix, inclusions, and transition zone. The model's validity is confirmed through the use of available test data, which demonstrates its capability to accurately capture the nonlinear conductivity behavior observed in CNTs-polymer composites. This study offers valuable insights into the design of high-performance conductive polymer nanocomposites, and enhances the understanding of electrical conduction mechanisms in CNT-dispersed polymer composites.

关键词： Nanoclay

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Late Paleozoic to early Mesozoic volcanic-sedimentary history of the southeastern margin of the Central Asian Orogenic Belt: Timing of uplift of the Inner Mongolia paleo-uplift

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Science China Earth Sciences 2025年第1期68卷 297-309页

作者： Wenxing HAO Jin-Hui YANG Guang zhu State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences School of Resource and Environmental Engineering Hefei University of Technology

The Kulun region is located in the eastern Bainaimiao arc belt on the southeastern margin of the Central Asian Orogenic Belt(CAOB), adjacent to the North China Craton(NCC) to the south. This region records the closure of the PaleoAsian Ocean during the Paleozoic to early Mesozoic and is key to study the tectonic evolution of the northern margin of the *** conducted zircon U-Pb geochronology and Hf isotope analysis of volcanic-sedimentary and intrusive rocks in the Kulun region. The volcanic-sedimentary rocks were previously assigned an early Carboniferous age, but include volcanic rocks with ages of 267–266 Ma and sedimentary rocks with youngest detrital zircon age peaks of 265–244 Ma, which were intruded by a granite with an age of 242 Ma. This indicates that these rocks are actually middle Permian to Middle Triassic in age(267–242Ma) and correspond to the Qingfengshan and Liujiagou formations. Moreover, two volcanic rock samples have high εHf(t) values(+1.6 to +16.1) and relatively young two-stage Hf model ages(1095–327 Ma), indicating their sources associated with the CAOB. The age spectra and Hf isotopic characteristics of detrital zircons from the sedimentary rocks suggest that, during the middle Permian to Middle Triassic, the sedimentary provenance in the Kulun region was mainly the CAOB. However, by the Early Jurassic, the provenance changed to the NCC(i.e., the Inner Mongolia Paleo-uplift, IMPU). This result, combined with the development of a series of conglomerates on the northern margin of the NCC in the Late Triassic(i.e., Xingshikou, Xiaoyingzi,and Xiaohekou formations), indicates the Kulun region experienced an abrupt change in paleogeography during the Late Triassic, with the IMPU undergoing significant uplift and thus becoming the main sediment source in the Kulun region. Based on the Late Triassic alkaline igneous belt(235–215 Ma) in the IMPU, we speculate that this uplift was caused by detachment of the southward-subducting Paleo-Asian oceanic

关键词： Central Asian Orogenic Belt the North China Craton Zircon geochronology Hf isotopes Inner Mongolia Paleo-uplift

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光学遥感船舶目标检测综述

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北部湾大学学报 2024年第6期39卷 17-25页

作者：朱圣博魏利胜安徽工程大学电气工程学院安徽芜湖241000

随着遥感船舶检测在民用与军事领域的广泛应用,目标检测技术在光学遥感船舶领域备受关注,其核心任务是判断遥感图像中是否存在船舶目标,并对其进行检测、分类与定位。遥感船舶检测总体上已不存在无法逾越的技术障碍,但仍须面对诸如数据... 详细信息

随着遥感船舶检测在民用与军事领域的广泛应用,目标检测技术在光学遥感船舶领域备受关注,其核心任务是判断遥感图像中是否存在船舶目标,并对其进行检测、分类与定位。遥感船舶检测总体上已不存在无法逾越的技术障碍,但仍须面对诸如数据集获取困难、标注困难及检测模型大等问题,只有通过不断的技术革新才能研发出低成本、轻量化和高精度的船舶目标检测模型。根据光学遥感船舶目标检测的发展趋势,梳理并分析了图像预处理、光学遥感船舶目标检测模型和目标检测策略的国内外研究进展,以期为从事该方向的研究人员提供参考。

关键词：光学遥感船舶检测监督学习深度学习目标检测

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Cyano migration-mediated radical-polar crossover cyclopropanation

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Science China Chemistry 2025年第1期68卷 241-248页

作者： Ziqiang Wang Yasu Chen Jie Li Chen zhu Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry Chemical Engineering and Materials ScienceSoochow University Frontiers Science Center for Transformative Molecules Zhangjiang Institute for Advanced Study and Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs Shanghai Jiao Tong University

We report a novel cyano migration-mediated radical-polar crossover process, whereby both the sulfonylcyanation of aliphatic alkenes and the formation of cyclopropanes are concurrently achieved. This transformation yields a diverse array of multisubstituted cyclopropanes under mild photocatalytic conditions. Mechanistic studies elucidate that the reaction proceeds via intramolecular nucleophilic substitution, leading to the formation of the cyclopropane derivatives.

关键词： cyclopropanation cyano migration radical-polar crossover radical reactions

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宁波市奉化区居民危险因素聚集与高血压发病关系

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国际流行病学传染病学杂志 2018年第2期45卷 112-115页

作者：林静洁冯伟竺盛波奉化区锦屏岳林社区卫生服务中心办公室浙江宁波315500 奉化区疾病预防控制中心慢性病与社区卫生服务科浙江宁波315500

目的探讨宁波市奉化区居民血脂异常、高血糖、吸烟和超重肥胖4项危险因素聚集与高血压发病的关系。方法选择宁波奉化区开展社区卫生诊断的调查数据，采用单因素和多因素Logistic回归统计方法，分析4项危险因素聚集与高血压之间的关系。... 详细信息

目的探讨宁波市奉化区居民血脂异常、高血糖、吸烟和超重肥胖4项危险因素聚集与高血压发病的关系。方法选择宁波奉化区开展社区卫生诊断的调查数据，采用单因素和多因素Logistic回归统计方法，分析4项危险因素聚集与高血压之间的关系。结果调查人群高血压患病率32．89％，标化患病率为25．94％。年龄、性别、超重肥胖、血脂异常、高血糖和吸烟均为影响高血压发生的危险因素（x^2=6．675、138．067、36．986、20．993、6．733、5．200，P均〈0．05）。调整年龄和性别因素后，危险因素血脂异常、高血糖、吸烟和超重肥胖有1项、2项、3项和4项聚集的D尺值（95％凹）分别为1．708（1．168~2．497），2．169（1．443~3．258），1．923（1．140-3．244）和8．238（2．122—31．976）。结论调整年龄和性别因素后，随着危险因素血脂异常、高血糖、吸烟和超重肥胖聚集项数的增加，奉化区居民高血压患病风险性上升。

关键词：高血压危险因素聚集

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Sequence-activated chemiluminescence probes: programmable illumination for high-contrast in vivo sensing and imaging

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Science China Chemistry 2025年第1期68卷 26-34页

作者： Yutao Zhang Juan Li Wei-Hong zhu Zhiqian Guo Shanghai Key Laboratory of Functional Materials Chemistry Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Institute of Fine Chemicals School of Chemistry and Molecular Engineering East China University of Science and Technology State Key Laboratory of Bioreactor Engineering Shanghai Frontier Science Research Base of Optogenetic Techniques for Cell MetabolismEast China University of Science & Technology

Sequence-activated chemiluminescence(CL) technique offers a unique approach to detecting specific biomolecules or cellular events with high sensitivity and spatial resolution. The fundamental principle behind sequence-activated CL probes involves tailoring highly-controllable CL signals in response to specific sequences or events of interest, thus enabling high-contrast signals under complex physiological conditions. This sequential activation could be triggered by enzymes, reactive oxygen species(ROS), biothiols or changes in the microenvironment. These unique sequence-activated CL probes bestow several advantages, including minimal background, deep-tissue penetration, and the ability of non-invasive or minimally invasive detection. The sequence-activated CL techniques represent a significant advancement in molecular imaging and diagnostics. In this mini-review, we focus on the latest developments in sequential CL probes, addressing the technical challenges and discussing the future trajectory by harnessing CL signaling and molecular recognition.

关键词： chemiluminescnece sequence-activation in-vivo bioimaging cyclic peroxide

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基于计算机视觉的鞘翅目害虫自动鉴定

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微计算机信息 2008年第3期24卷 304-305,111页

作者：黄星奕林冬瑾朱圣波赵杰文江苏大学食品与生物工程学院镇江出入境检验检疫局

鞘翅目害虫的鉴别工作是由数量有限的专业研究人员进行,大部分非专业人员因缺乏相关知识和技术培训,要快速鉴定害虫种属具有相当的难度,不利于害虫防治。为此提出利用计算机视觉技术对鞘翅目害虫进行自动识别。用不同的图像获取系统分... 详细信息

鞘翅目害虫的鉴别工作是由数量有限的专业研究人员进行,大部分非专业人员因缺乏相关知识和技术培训,要快速鉴定害虫种属具有相当的难度,不利于害虫防治。为此提出利用计算机视觉技术对鞘翅目害虫进行自动识别。用不同的图像获取系统分别采集体长不同的鞘翅目害虫图像,然后通过数字图像分析技术,提取和计算害虫图像的几何形状特征参数。采用模糊模式识别算法建立害虫的模式库和隶属函数,然后根据模糊集理论的极小极大准则完成待识别害虫的归类。对29种鞘翅目害虫进行识别,识别正确率为86.2%。为鞘翅目害虫的快速鉴定提供了一个新的途径。

关键词：鞘翅目害虫计算机视觉特征提取自动识别

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