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Nanograting-Based Dynamic Structural Colors Using Heterogeneous Materials

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NANO-MICRO LETTERS 2025年第1期17卷 1-14页

作者： Wang, Jingang Yu, Haibo zheng, Jianchen zhang, Yuzhao Guo, Hongji Qiu, Ye Wang, Xiaoduo Yang, Yongliang Liu, Lianqing Chinese Acad Sci Shenyang Inst Automat State Key Lab Robot Shenyang 110016 Peoples R China Univ Chinese Acad Sci Beijing 100049 Peoples R China

A 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials was proposed by interweaving a pH-responsive hydrogel with IP-L *** nanogrid structures exhibit brilliant tuneable structural color, high sensitivity, and ultrafast recovery speeds in response to *** 4D printing-based grayscale design approach was proposed for the patterned encoding and array printing of dynamic structural colors, promoting their application in patterned printing, information encryption, and microfluidic chip sensing. Dynamic structural colors can change in response to different environmental stimuli. This ability remains effective even when the size of the species responsible for the structural color is reduced to a few micrometers, providing a promising sensing mechanism for solving microenvironmental sensing problems in micro-robotics and microfluidics. However, the lack of dynamic structural colors that can encode rapidly, easily integrate, and accurately reflect changes in physical quantities hinders their use in microscale sensing applications. Herein, we present a 2.5-dimensional dynamic structural color based on nanogratings of heterogeneous materials, which were obtained by interweaving a pH-responsive hydrogel with an IP-L photoresist. Transverse gratings printed with pH-responsive hydrogels elongated the period of longitudinal grating in the swollen state, resulting in pH-tuned structural colors at a 45 degrees incidence. Moreover, the patterned encoding and array printing of dynamic structural colors were achieved using grayscale stripe images to accurately encode the periods and heights of the nanogrid structures. Overall, dynamic structural color networks exhibit promising potential for applications in information encryption and in situ sensing for microfluidic chips.

关键词： Dynamic structural colors Four-dimensional printing pH-responsive Nanogrid Heterogeneous materials

嗜水气单胞菌感染后牛蛙血清中抗菌物质的初步研究

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水产学报 2007年第1期31卷 62-67页

作者：邹文政张俊杰鄢庆枇纪荣兴集美大学水产学院集美大学水产学院福建厦门361021

用1×107mL-1的嗜水气单胞菌腹腔注射感染牛蛙,注射后7d内试验组牛蛙血清抗菌活性都高于对照组,其中在3d、7d时存在显著性差异,峰值出现在感染后第3天。收集第2批人工感染后3d时牛蛙的血清。该血清经Sephadex G-25凝胶柱分离后,并在波长... 详细信息

用1×107mL-1的嗜水气单胞菌腹腔注射感染牛蛙,注射后7d内试验组牛蛙血清抗菌活性都高于对照组,其中在3d、7d时存在显著性差异,峰值出现在感染后第3天。收集第2批人工感染后3d时牛蛙的血清。该血清经Sephadex G-25凝胶柱分离后,并在波长280nm处测定紫外吸收值,得到两个吸收峰。以嗜水气单胞菌检测分离物的抗菌活性,结果表明经诱导的血清抗菌物质主要集中在第1个吸收峰。通过对金黄色葡萄球菌等10株指示菌抗菌谱的测定,其对大肠杆菌、枯草芽孢杆菌、铜绿假单胞菌等具有明显的抗菌作用;SDS-PAGE分析显示抗菌蛋白分子量较大。结果说明:牛蛙被嗜水气单胞菌感染后能很快产生多种抗菌物质,主要的抗菌物质是分子量比较大的物质,这些抗菌物质对部分革兰氏阴性菌和革兰氏阳性菌有抗菌作用。

关键词：牛蛙嗜水气单胞菌抗菌蛋白抗菌活性

Autobiogutobiographical amnesia and cognltive disorder resulgting from bilateral severe thalamic infarction Two cases reports

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中国临床神经科学 2000年第Z1期8卷 76-页

作者： Ytt Kai Yu Feng Qi Lei zheng Lin zhang jun Department of Neurology the Shenyang railway Hospital Shenyang 110005 First clinical College of Dalian Medical University Dalian 116011 Second Affiliated Hospital Shenyang Medical College Second Affiliated Hospital Shenyang Medical College

Objective To report two cases of patients with bilateral severe thalamic *** showed autobiographical amnesia and cognitive disorders and to shed light on the mechanisms underlying thc retrograde amenesia. Method The two cases were studied clinically, CT and MRI were performed also, Language and neuropsychological tests were evaluated. Results Two patients with a chronic amnesia and cogntive disorders resulting from bilateral paramedian thalamic infarction showed a pattern of retrograde amnesia personally relevent autobiographical memory were prefoundly impaired .Whereas about the famous people and public events were relatively impaired. The patients almost had no thalamic *** events the one described showed spontaneously confabulated. Conclusion We think a probable explanation that the disorders at the thematic retrieval fiomwork ievel of memory and the information reconstruction due to a disconnetion of frontal and medial temperal memory systems.

关键词： autobiographical memory cognitive disorders

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旋转切刀式小型切菜机设计研究

萍乡学院学报 2017年第3期34卷 113-116页

作者：郑银鹏张均崔文洁萍乡学院机械电子工程学院江西萍乡337000

旋转切刀式小型切菜机体积小、适用范围广、使用灵活等优势。通过对现有切菜机工作原理、体积重量、刀具运动方式、菜品收纳四个方面的研究分析,运用三维软件INVENTOR进行三维模型设计,并开展了三维模型运动仿真。该切菜机包括动力装置... 详细信息

旋转切刀式小型切菜机体积小、适用范围广、使用灵活等优势。通过对现有切菜机工作原理、体积重量、刀具运动方式、菜品收纳四个方面的研究分析,运用三维软件INVENTOR进行三维模型设计,并开展了三维模型运动仿真。该切菜机包括动力装置、传动装置、蔬菜传送装置、调速装置、切割装置、收纳装置、控制开关。其中切割装置采用四片式、可拆卸、双刃旋转刀具,速度快、效率较高;收纳装置采用双斗式收纳箱设计,节省空间、体积小。

关键词：四片式双刃旋转刀具切菜机双斗式收纳箱机械设计

结合视觉显著图的Seam Carving图像缩放方法

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云南大学学报（自然科学版） 2018年第2期40卷 222-227页

作者：郭正红张俊华郭晓鹏梅礼晔云南大学信息学院云南昆明650091

Seam Carving算法在缩放主体区域与背景颜色对比不明显或者视觉主体区域较大的图像时,可能会造成图像视觉主体变形和重要内容缺失的现象.为了改善Seam Carving算法的不足,采用图像梯度图和显著图结合的方法来改进图像的梯度能量图.实验... 详细信息

Seam Carving算法在缩放主体区域与背景颜色对比不明显或者视觉主体区域较大的图像时,可能会造成图像视觉主体变形和重要内容缺失的现象.为了改善Seam Carving算法的不足,采用图像梯度图和显著图结合的方法来改进图像的梯度能量图.实验表明,这种方法在缩放图像时比Seam Carving算法更能很好地保持图像重要内容,整体视觉效果较好,图像像素的平均能量值更大,图像缩放质量更好.

关键词： Seam Carving算法梯度图显著图图像缩放

Endoplasmic reticulum stress and autophagy in cerebral ischemia/reperfusion injury:PERK as a potential target for intervention

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Neural Regeneration Research 2025年第5期20卷 1455-1466页

作者： Ju zheng Yixin Li Ting zhang Yanlin Fu Peiyan Long Xiao Gao zhengwei Wang Zhizhong Guan Xiaolan Qi Wei Hong Yan Xiao Key Laboratory of Endemic and Ethnic Diseases Ministry of Education&Key Laboratory of Medical Molecular Biology of Guizhou ProvinceGuizhou Medical UniversityGuiyangGuizhou ProvinceChina Guizhou Center for Disease Control and Prevention GuiyangGuizhou ProvinceChina Department of Histology and Embryology Guizhou Medical UniversityGuiyangGuizhou ProvinceChina Collaborative Innovation Center for Prevention and Control of Endemic and Ethnic Regional Diseases Co-constructed by the Province and Ministry GuiyangGuizhou ProvinceChina

Several studies have shown that activation of unfolded protein response and endoplasmic reticulum(ER)stress plays a crucial role in severe cerebral ischemia/reperfusion *** occurs within hours after cerebral ischemia,but the relationship between ER stress and autophagy remains *** this study,we established experimental models using oxygen-glucose deprivation/reoxygenation in PC12 cells and primary neurons to simulate cerebral ischemia/reperfusion *** found that prolongation of oxygen-glucose deprivation activated the ER stress pathway protein kinase-like endoplasmic reticulum kinase(PERK)/eukaryotic translation initiation factor 2 subunit alpha(e IF2α)-activating transcription factor 4(ATF4)-C/EBP homologous protein(CHOP),increased neuronal apoptosis,and induced ***,inhibition of ER stress using inhibitors or by si RNA knockdown of the PERK gene significantly attenuated excessive autophagy and neuronal apoptosis,indicating an interaction between autophagy and ER stress and suggesting PERK as an essential target for regulating *** autophagy with chloroquine exacerbated ER stress-induced apoptosis,indicating that normal levels of autophagy play a protective role in neuronal injury following cerebral ischemia/reperfusion *** from this study indicate that cerebral ischemia/reperfusion injury can trigger neuronal ER stress and promote autophagy,and suggest that PERK is a possible target for inhibiting excessive autophagy in cerebral ischemia/reperfusion injury.

关键词： apoptosis ATF4 autophagy C/EBP homologous protein cerebral ischemia/reperfusion injury eIF2α endoplasmic reticulum stress PERK

LIBS技术在不同收光模式下同步测量燃煤灰成分

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中国电机工程学报 2013年第11期33卷 54-60页

作者：姚顺春陆继东董美蓉郑建平李军张博华南理工大学电力学院

针对燃煤组分分布不均匀的特性,研究不同收光模式对激光诱导击穿光谱技术同步测量灰成分的影响。选用具有不同灰成分含量梯度的燃煤样品作为检测对象,对比分析同向收光和侧向收光下灰成分组成元素谱线信号探测的强度和稳定性及SiO2、Al... 详细信息

针对燃煤组分分布不均匀的特性,研究不同收光模式对激光诱导击穿光谱技术同步测量灰成分的影响。选用具有不同灰成分含量梯度的燃煤样品作为检测对象,对比分析同向收光和侧向收光下灰成分组成元素谱线信号探测的强度和稳定性及SiO2、Al2O3、Fe2O3、CaO、MgO和TiO2含量定量分析的精确度。研究结果表明,相同实验条件下同向收光模式的光谱信号稳定性和定量分析精确度更好,检验样品中各灰成分的预测值和参考值之间的拟合度均在0.986以上。而侧向收光模式下探测到的光谱信号强度更强,光谱探测下限可以达到190nm。

关键词：煤灰成分激光诱导击穿光谱收光模式同步测量

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工程地质勘察中水文地质问题的危害探讨

世界有色金属 2018年第2期43卷 197-197,199页

作者：梁会杰郑军张立烨河北省环境地质监测院河北石家庄050000

水文地质问题是工程地质勘察工作中的重要环节,关系到工程建设的顺利实施和工程的持续使用,一旦在工程项目后期产生水文地质问题,不仅会严重损害工程项目的经济利益,同时还会给人民群众的生命安全产生威胁,因此工程地质勘察中需要尤其... 详细信息

水文地质问题是工程地质勘察工作中的重要环节,关系到工程建设的顺利实施和工程的持续使用,一旦在工程项目后期产生水文地质问题,不仅会严重损害工程项目的经济利益,同时还会给人民群众的生命安全产生威胁,因此工程地质勘察中需要尤其注意水文地质问题的发现和解决。本文首先阐述了水文地质问题可能产生的危害,进而提出相对应的预防和改进措施和建议,希望能为提升我国工程地质勘察工作水平提供参考和借鉴。

关键词：工程地质勘察水文地质问题危害探讨

Visualization of the protective role of estrogen against female liver fibrosis via an ER viscosity NIR fluorescent probe

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Science China Chemistry 2025年第1期 360-368页

作者： zheng Liu Changyu zhang Zipeng Li Wanying Ma Jia Liu Xiang Xia Ning Xu Wen Sun Jianjun Du Jiangli Fan Xiaojun Peng State Key Laboratory of Fine Chemicals Dalian University of Technology Ningbo Institute of Dalian University of Technology

Endoplasmic reticulum(ER) viscosity has emerged as a new potential biomarker for hepatic fibrosis(HF). Herein, we report the first ER-targeting viscosity-responsive near-infrared(NIR) fluorescent probe HBT-PP for investigations of HF *** twisted intramolecular charge transfer(TICT) and the excited state intramolecular proton transfer(ESIPT) are combined to endow HBT-PP with the selective response towards viscosity(～62-fold) and a super large stokes shift(～320 nm). HBT-PP mainly targets organelle ER and is able to image the drug-or alcohol-induced viscosity elevation in living cells. Significantly,HBT-PP was successfully applied to visualize the gender difference in HF and the protective role of estrogen in restraining HF progression. Of note, after 10 min of stain with HBT-PP, HF lesions showed a stage-based response, indicating the potential of this probe in fast and early diagnosis of HF. These results clearly demonstrated the promising application of HBT-PP as a new tool for exploring ER viscosity-involved physiological and pathological processes.

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