机构

• 长春光学精密机械与... [33]
• 长春应用化学研究所 [17]
• 上海应用物理研究所 [5]
• 高能物理研究所 [5]
• 宁波材料技术与工程研... [2]
• 物理研究所 [1]
• 更多

采集方式

• OAI收割 [68]
• iSwitch采集 [1]

内容类型

• 期刊论文 [37]
• 会议论文 [32]

发表日期

• 2020 [1]
• 2019 [1]
• 2018 [2]
• 2017 [4]
• 2015 [10]
• 2014 [5]
• 更多

学科主题

• Materials ... [2]
• Chemistry [1]
• Chemistry;... [1]
• Engineerin... [1]
• Neuroscien... [1]
• Science & ... [1]
• 更多

筛选

浏览/检索结果: 共69条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 Self-assembled, biocompatible and biodegradable TEMPO-conjugated nanoparticles enable folate-targeted tumor magnetic resonance imaging 期刊论文  OAI收割 APPLIED MATERIALS TODAY, 2020, 卷号: 18 作者:  Akakuru, Ozioma Udochukwu;  Iqbal, M. Zubair;  Liu, Chuang;  Xing, Jie;  Wei, Zhenni   |  收藏  |  浏览/下载：57/0  |  提交时间：2020/12/16 IRON-OXIDE NANOPARTICLES  RADICAL CONTRAST AGENTS  IN-VITRO  CHITOSAN  PEG  THERAPY  SHELL   食用蔬菜能吸收和积累微塑料 期刊论文  OAI收割 科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934 作者:  李连祯;  周倩;  尹娜;  涂晨;  骆永明   |  收藏  |  浏览/下载：144/0  |  提交时间：2020/06/17 微塑料  生菜  聚苯乙烯微球  吸收  积累  健康风险  microplastics  lettuce  polystyrene microbeads  uptake  accumulation  human health risk  Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.   Dotted Core-Shell Nanoparticles for T-1-Weighted MRI of Tumors 期刊论文  OAI收割 ADVANCED MATERIALS, 2018, 卷号: 30, 期号: 33 作者:  Niu, Gang;  Wu, Aiguo;  Chen, Xiaoyuan   |  收藏  |  浏览/下载：61/0  |  提交时间：2018/12/04 Energy-loss Spectroscopy  Iron-oxide Nanoparticles  In-vivo  Contrast Agents  Cancer  Cells  T-1  Relaxivity  Diagnosis  Efficacy   An 800 nm driven NaErF4@NaLuF4 upconversion platform for multimodality imaging and photodynamic therapy 期刊论文  OAI收割 Nanoscale, 2018, 卷号: 10, 期号: 26, 页码: 12356-12363 作者:  Li, Q. Q.;  Li, X. D.;  Zhang, L.;  Zuo, J.;  Zhang, Y. L.   |  收藏  |  浏览/下载：24/0  |  提交时间：2019/09/17 excitation-energy  in-vitro  nanoparticles  luminescence  nanocrystals  enhancement  nanoprobes  dynamics  contrast  surface  Chemistry  Science & Technology - Other Topics  Materials Science  Physics   Anisotropic total variation minimization approach in in-line phase-contrast tomography and its application to correction of ring artifacts 期刊论文  iSwitch采集 Chinese physics b, 2017, 卷号: 26, 期号: 6, 页码: 8 作者:  Ji, Dong-Jiang;  Qu, Gang-Rong;  Hu, Chun-Hong;  Liu, Bao-Dong;  Jian, Jian-Bo 收藏  |  浏览/下载：36/0  |  提交时间：2019/04/23 Sart  Anisotropic tv  In-line phase-contrast   Anisotropic total variation minimization approach in in-line phase-contrast tomography and its application to correction of ring artifacts 期刊论文  OAI收割 CHINESE PHYSICS B中国物理. B, 2017, 卷号: 26, 期号: 6, 页码: 60701 作者:  Guo, XK;  Ji, DJ;  Qu, GR;  Hu, CH;  Liu, BD   |  收藏  |  浏览/下载：30/0  |  提交时间：2019/08/27 SART  anisotropic TV  in-line phase-contrast   The imaging of failure in structural materials by synchrotron radiation X-ray microtomography 期刊论文  OAI收割 ENGINEERING FRACTURE MECHANICS, 2017, 卷号: 182, 期号: -, 页码: 127-156 作者:  Wu, SC;  Xiao, TQ;  Withers, PJ   |  收藏  |  浏览/下载：37/0  |  提交时间：2018/08/30 Fatigue-crack-growth  Micro-computed-tomography  Diffraction Contrast Tomography  Duplex Stainless-steel  Cast-aluminum Alloy  High-cycle Fatigue  Foreign Object Damage  Esrf Beamline Id19  In-situ Analysis  Mg-cu Alloy   Neovascularization of hepatocellular carcinoma in a nude mouse orthotopic liver cancer model: a morphological study using X-ray in-line phase-contrast imaging 期刊论文  OAI收割 BMC CANCER, 2017, 卷号: 17, 页码: - 作者:  Li, BL;  Zhang, YQ;  Wu, WZ;  Du, GH;  Cai, L   |  收藏  |  浏览/下载：24/0  |  提交时间：2017/12/08 Synchrotron Radiation  In-line Phase-contrast Imaging  Computed Tomography  Hepatocellular Carcinoma  Tumor Neovascularization   Real time, in situ observation of the photocatalytic inactivation of Saccharomyces cerevisiae cells 期刊论文  OAI收割 Materials Science & Engineering C-Materials for Biological Applications, 2015, 卷号: 49, 页码: 75-83 J. T.; Wang Zhang, X. X.; Li, Q.; Shang, J. K. 收藏  |  浏览/下载：33/0  |  提交时间：2015/05/08 Photocatalytic inactivation  Saccharomyces cerevisiae cells  TiON/PdO  Real time analysis  Phase contrast microscopy  Fluorescence staining  doped titanium-oxide  visible-light  bactericidal activity  tio2  photocatalyst  water disinfection  dioxide  nitrogen  degradation  irradiation  nanocomposites  in situ observation   Controllable synthesis of polydopamine nanoparticles in microemulsions with pH-activatable properties for cancer detection and treatment 期刊论文  OAI收割 journal of materials chemistry b, 2015, 卷号: 3, 期号: 33, 页码: 6731-6739 作者:  Liu,Fuyao;  He,Xiuxia;  Zhang,Junping;  Chen,Hongda;  Zhang,Huimao 收藏  |  浏览/下载：62/0  |  提交时间：2016/05/12 IN-VIVO BIODISTRIBUTION  MAGNETIC-RESONANCE  SILICA NANOPARTICLES  HYBRID NANOPARTICLES  FACILE PREPARATION  CONTRAST AGENT  MRI  THERAPY  SIZE  ENDOCYTOSIS