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A novel active-passive protection strategy endows carbonyl iron with excellent intelligent anti-corrosion and microwave absorption dual functional characteristics

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Nano Research 2025年第1期18卷 487-500页

作者： wei Tian Quanyuan Feng Linbo Zhang Yinfan liu Xian jian Longjiang Deng Institute of Microelectronics School of Information Science and TechnologySouthwest Jiaotong UniversityChengdu 611756China National Engineering Researching Centre of Electromagnetic Radiation Control Materials Key Laboratory of Multi-Spectral Absorbing Materials and Structures of Ministry of EducationState Key Laboratory of Electronic Thin Films and Integrated DevicesSchool of Electronic Science and EngineeringUniversity of Electronic Science and Technology of ChinaChengdu 611731China School of Materials and Energy University of Electronic Science and Technology of ChinaChengdu 611731China The Yangtze Delta Region Institute(Huzhou)&School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhou 313001China

Carbonyl iron absorbers(CI)face significant challenges in practical applications,such as corrosion,interface bonding failure,detachment,and high maintenance ***,we have developed intelligent self-healing technology based on proactive/passive mechanisms via in situ synthesis of self-healing factors(polydopamine/benzotriazole(PDA/BTA))and physical barrier layers(SiO_(2)/1,1,1,3,3,3-hexamethyl disilazane,SiO_(2)/HMDS)to enhance corrosion resistance,while also being compatible with efficient microwave absorption *** unique multiscale structure gives full play to the utilization of the roles of each functional layer,including the intelligent self-healing features of PDA/BTA,physical shielding and spatial confinement characteristics of SiO_(2)/HMDS,and magnetic-dielectric synergistic mechanism resulted from the good impedance matching characteristics,the conduction loss,the interfacial polarization loss and natural *** asfabricated composites achieved an exceptional minimum reflection loss value of-55.4 dB at 10.7 GHz and the effective absorption band of 7.6 ***,it still exhibits obvious self-healing and corrosion resistance characteristics after 360 h corrosion treatment,ascribed to the self-healing mechanism of PDA/BTA and the blocking intervention effect of SiO_(2)/*** work is considered to pave the way for the synthesis of high-performance magnetic absorbers,especially in enhancing their intelligent self-healing ability in corrosive environments.

关键词： microwave absorption intelligent self-healing technology carbonyl iron multiscale structure magneticdielectric synergistic mechanism

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Small modifications of endo-functionalized cavities lead to large changes in molecular interaction in water

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Science China Chemistry 2025年第1期 369-376页

作者： Song-Meng Wang Hao Nian Yan-Fang Wang Li-Shuo Zheng Yu-Tao Zheng Yi-wei Dong Liping Huang Xiaoping Wang wei jiang liu-Pan Yang Department of Chemistry Southern University of Science and Technology School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal ResourcesGuangxi Normal University School of Pharmaceutical Science Hengyang Medical School University of South China

Studying molecular recognition in aqueous environments is crucial for understanding biological processes. Herein, we present a series of N-doped endo-functionalized anthracene-based cavities by introducing inward-directed pyridine units. The subtle modifications can significantly affect the binding properties of these receptors, which is similar to the mutations in biological systems. Combining theoretical calculations and molecular recognition experiments demonstrated that these “mutations” have an impact on the hydrophobicity and charge distribution of the hosts, consequently significantly influencing molecular *** is crucial for understanding the intricate mechanisms of molecular-level interactions in biological receptors.

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Clara cells modulate the pulmonary innate immune response in bleomycin-induced pulmonary fibrosis

Clara cells modulate the pulmonary innate immune response in...

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中国生理学会第23届全国会员代表大会暨生理学学术大会

作者： Chen LI,jian-Zhong HAN,wei liu,Lian LI,Li SHEN,Dan-Dan FENG,Wan-Xiang HU,Hui-Jun liu,Shao-Jie YUE,Zi-Qiang LUO~* Department of Physiology,Xiangya School of Medicine,Central South University,Changsha 410078,China

＜正＞Pulmonary fibrosis is a complex interstitial lung disease resulting from a multitude of lung injury and pathological *** to its unknown etiology and relentless progression to death regardless of treatment,the molecular mechanisms of fibrosisgenesis remain the subject of intense *** epithelial cells secrete proinflammatory mediators during pulmonary fibrogenesis,but cytokine production by a prominent nonciliated bronchiolar epithelial cell,the Clara cell,specifically,is *** assess the impact of Clara cells on cytokine production in the lung in bleomycin-induced pulmonary fibrosis in vivo,airway injury was induced in adult mice before bleomycin by administration of naphthalene,a selective toxicant of Clara cells.A 20-plex kit of luminex based bead immunoassay method was used to profile cytokines expression in the total lung protein of Clara cell ablated mice and their control *** pulmonary fibrosis was induced by intratracheal administration of *** lung hematoxylin eosin staining and Masson’s trichrome staining were used to confirm induction of pulmonary fibrosis by *** results showed that pathologic grade of lesion differed in the two different fibrosis models,and Clara cell selectively ablated lung sections exhibited higher pathologic scores than those from control *** quantification in lungs of mice showed that Clara cells ablation increased expression of Th2 ***-4,IL-5,IL-10 and IL-13 levels in the lung were significantly induced in naphthalene -treated vs saline-treated *** results suggest that Clara cells elaborate cytokines and modulate the lung innate immune response during pulmonary fibrogenesis.

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港口干散货堆场的环保措施简析

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港工技术 2016年第5期53卷 86-91页

作者：张剑魏梦娇柳玉涛中交第一航务工程勘察设计院有限公司天津300222

扬尘是大气污染的首要污染源,露天散货堆场防尘、抑尘工作刻不容缓。本文探讨了露天散货堆场的主要起尘环节,通过对比分析选用防风抑尘网技术控制扬尘,并对其在工程实际中的应用效果进行了介绍。

关键词：扬尘防风抑尘网露天散货堆场风洞试验

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航拍图像序列的多运动目标定位

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上海交通大学学报 2002年第12期36卷 1745-1749页

作者：顾樑徐大为赵建伟刘重庆上海交通大学图像处理与模式识别研究所上海200030

针对航拍图像序列中运动目标使用仿射模型来描述航拍图像序列中的背景运动 ,提出了一种基于稀疏采样的局部补偿误差函数泰勒展开算法 ,该算法能有效地估计出模型参数 ;又根据图象序列中背景运动与目标运动的矢量不一致的特点 ,采用矢量... 详细信息

针对航拍图像序列中运动目标使用仿射模型来描述航拍图像序列中的背景运动 ,提出了一种基于稀疏采样的局部补偿误差函数泰勒展开算法 ,该算法能有效地估计出模型参数 ;又根据图象序列中背景运动与目标运动的矢量不一致的特点 ,采用矢量聚类的算法 ,实现了对多个目标的准确定位 .提出的算法对噪声和光照都具有强抑制性 ,可以在图像质量相对较差时 ,能确保对运动目标的快速定位 .

关键词：图像序列多运动目标定位航拍图像块匹配背景运动估计计算机视觉系统结构

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Engineering N3C vacancies in hierarchical porous carbon nitride nanosheets for room temperature ultradeep photocatalytic aerobic oxidative desulfurization

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Science China Chemistry 2025年

作者： Yina Nie weijie Yang Xin Wang Xiang Li Lele wei Xiaolin Bai Lin liu Feng Fu Jun Wan College of Chemistry & Chemical Engineering Research Institute of Comprehensive Energy Industrial Technology Shaanxi Key Laboratory of Chemical Reaction Engineering Yan'an University Anhui Engineering Research Center of Carbon Neutrality College of Chemistry and Materials Science Anhui Normal University

The production of ultra-low sulfur clean fuels holds global significance for improving energy efficiency and reducing environmental pollution. Photocatalytic aerobic oxidative desulfurization（PODS） offers an attractive approach to efficiently remove refractory heterocyclic aromatic sulfur compounds under mild conditions. However, the sluggish charge dynamics,insufficient molecule activation, and slow mass transfer within photocatalysts restrict the overall desulfurization efficiency,hindering the widespread application of this technology. Herein, we developed a defective g-C3N4（M1U3CN） photocatalyst with bridged N3Cvacancies and hierarchical porous structures to address these limitations. This catalyst not only demonstrates outstanding dibenzothiophene（DBT） removal efficiency of 99.6% for model oil with high conversion and selectivity but also achieves complete sulfur removal from gasoline as well as 96.7% sulfur removal for distilled diesel at room temperature,successfully achieving ultradeep aerobic oxidative desulfurization. The introduction of rich N3Cvacancies and abundant micromeso-macroporous distribution in M1U3CN enhances kinetic efficiencies by promoting charge carrier separation, mass transfer,and molecular activation simultaneously; resulting in exceptional PODS performance. This work provides a collaborative strategy to overcome kinetic challenges in aerobic oxidative desulfurization via defect and structural engineering of the catalyst.

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模拟酸雨组成对棉花根际土壤水解酶活性的影响

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土壤通报 2003年第3期34卷 216-218页

作者：徐冬梅刘广深许中坚刘维屏浙江大学环境科学研究所浙江杭州310027

本文模拟酸雨离子组成,运用恒温恒湿连续培养的方法,考察了外源酸对棉花根际土壤脲酶、转化酶、磷酸酶活性的影响。结果表明:低酸度对脲酶、中性磷酸酶产生一定的激活效应,进而转为抑制;而在[H+]0～55mmol/kg范围内,外源酸对转化酶与酸... 详细信息

本文模拟酸雨离子组成,运用恒温恒湿连续培养的方法,考察了外源酸对棉花根际土壤脲酶、转化酶、磷酸酶活性的影响。结果表明:低酸度对脲酶、中性磷酸酶产生一定的激活效应,进而转为抑制;而在[H+]0～55mmol/kg范围内,外源酸对转化酶与酸性磷酸酶活性表现为明显的激活效应。三种水解酶活性随培养时间的延长均表现为激活-抑制的变化规律。相关分析表明,脲酶、中性磷酸酶活性与[H+]呈极显著负相关;而转化酶、酸性磷酸酶活性与[H+]正相关。

关键词：模拟酸雨棉花根际土壤水解酶活性

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广西蔗区白蚁发生为害及优势种群调查

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南方农业学报 2017年第6期48卷 1009-1013页

作者：邓铁军张永坚陆燕燕张伟坚刘丽辉广西农业科学院植物保护研究所南宁530007 南宁天鹰有害生物防治有限公司南宁530003

【目的】了解广西蔗区白蚁的发生为害程度,明确各蔗区白蚁种类和优势种群,为白蚁综合防治提供科学依据。【方法】在广西崇左市和北海市选择有代表性的蔗地进行白蚁为害程度调查;在广西崇左、南宁、北海、来宾和柳州市选择18个有代表性蔗... 详细信息

【目的】了解广西蔗区白蚁的发生为害程度,明确各蔗区白蚁种类和优势种群,为白蚁综合防治提供科学依据。【方法】在广西崇左市和北海市选择有代表性的蔗地进行白蚁为害程度调查;在广西崇左、南宁、北海、来宾和柳州市选择18个有代表性蔗地,对每个样地采用五点取样法调查白蚁种类并计算其百分比。【结果】广西甘蔗主产区均受白蚁为害,其中以崇左市和北海市蔗区受白蚁为害最严重。调查发现危害甘蔗的白蚁有9种,属于2科8属,优势种群为黑翅土白蚁(52.89%)、小头钩白蚁(19.11%)、黄翅大白蚁(11.11%)和黄胸散白蚁(6.67%)。不同蔗区危害甘蔗的白蚁种类和优势种群不同,崇左市甘蔗白蚁种类有6种,优势种为小头钩白蚁、黑翅土白蚁和土垅大白蚁;北海市甘蔗白蚁种类有6种,优势种为黑翅土白蚁和黄翅大白蚁;南宁市甘蔗白蚁种类有5种,优势种为黑翅土白蚁、黄胸散白蚁和黄翅大白蚁;柳州市甘蔗白蚁种类有3种,优势种为黑翅土白蚁和黄翅大白蚁;来宾市甘蔗白蚁种类有2种,优势种为黑翅土白蚁。【结论】广西蔗区白蚁发生较普遍,已成为蔗区重要害虫;各蔗区白蚁种类和优势种群存在明显差异,应针对各蔗区白蚁优势种群开展白蚁综合防治技术研究,实行分区治理。

关键词：甘蔗白蚁优势种群广西

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Effects of Downregulation of CCoAOMT Expression on Lignin Biosynthesis in Tobacco

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Agricultural Sciences in China 2002年第8期1卷 861-864页

作者： ZHAO Hua-yan, wei jian-hua, liu Hui-rong, ZHU Zhi-qing and SONG Yan-ru( Key Laboratory of Photosynthesis and Environmental Molecular Physiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, P.R.China Beijing Center of Agro-Biotechnology, Beijing 100089, P.R.China) Key Laboratory of Photosynthesis and Environmental Molecular Physiology Institute of Botany Chinese Academy of Sciences Beijing 100093 P. R . China Beijing Center of Agro-Biotechnology Beijing 100089 P. R . China

Antisense CCoAOMT cDNA of Chinese white poplar( Populus tomentosa) was transformed into tobacco W38 mediated by Agrobacterium tumefaciens. The results of PCR, PCR-Southern and Northern dot analysis indicated that the antisense CCoAOMT cDNA was integrated in the genome of the transgenic tobacco and expressed at transcriptional level. The basal stems of the 3-month-old transgenic plants growing in the greenhouse were cut off and dried for Klason lignin analysis. Lignin content in most of the transgenic plants declined compared with the control plants, and one of them, the lignin content decreased by 37%. Our results suggest that the suppression of endogenous CCoAOMT expression can reduce lignin content of the plants effectively.

关键词： CCoAOMT Antisense RNA Lignin

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Rational design of lipid-activatable NIR-II probes for precisely imaging atherosclerotic plaque

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Science China Chemistry 2025年

作者： Xinyu Xu Yuan Ma Hui Cao Li Xu Haoming Chen Sulai liu wei Sun Guosheng Song Xiaobing Zhang State Key Laboratory for Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringHunan University Department of Hepatobiliary Surgery/Central Laboratory Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University) Department of Cardiology the First Affiliated Hospital of Nanjing Medical University Key Laboratory of Targeted Intervention of Cardiovascular Disease Collaborative Innovation Center for Cardiovascular Disease Translational MedicineNanjing Medical University Shenzhen Research Institute of Hunan University

Atherosclerosis(AS) is a prevalent condition associated with cardiovascular and cerebrovascular diseases, featuring lipid-laden plaque; however, the insufficient resolution and low sensitivity of traditional medical imaging techniques limit their application in lipid imaging. Currently, the second near-infrared(NIR-II) fluorescence imaging offers promising sensitivity and convenience. However, existing probes have limitations in terms of signal-to-background ratio, penetration depth, and tissue scattering. Herein, we use a molecular regulatory strategy to design a lipid-activatable probe Rh-965 with high specificity and NIR-II emission for improved imaging potential in deep tissues. The potential of Rh-965 for imaging plaque lipids in mice with AS is demonstrated by localizing carotid artery plaques using NIR-II imaging. The development of more stable lipid-activated NIR-II probes can significantly enhance atherosclerosis diagnosis and facilitate in vivo imaging in deeper tissues.

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