检索结果-南通市图书馆

Rapid detection of nanoplastic particles by a luminescent Tb-based coordination polymer

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Chemical Letters 2024年第5期35卷 529-533页

作者： Tiankai Sun Hui Min Zongsu Han Liang Wang Peng Cheng wei shi Department of Chemistry College of ChemistryNankai UniversityTianjin 300071China State Key Laboratory of Separation Membranes and Membrane Processes School of Environmental Science and EngineeringTiangong UniversityTianjin 300387China Key Laboratory of Advanced Energy Materials Chemistry(MOE) Frontiers Science Center for New Organic Matter and Renewable Energy Conversion and Storage Center(RECAST)College of ChemistryNankai UniversityTianjin 300071China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Nanoplastics(NPs)in aqueous environment have become a category of emerging pollutants on account of their potential risks to both human health and environment.The detection of NPs is a great challenge due to the lack of sensitive and selective sensing materials with fast response time and wide sensing range of particle sizes.Herein,a Tb-based coordination polymer has been synthesized for luminescent detection of nanopolystyrene with different particle sizes in aqueous solutions,showing a low limit of detection,fast response time within 10 s and high selectivity in the presence of other plastics.The“turn-on”sensing mechanism is studied in detail.This work provides a facile method for the fast detection of NPs.

关键词： Coordination polymer Nano polystyrene Luminescent detection Sensing mechanism Water safety

维普期刊数据库

Effect of yttrium and manganese addition on catalytic soot combustion activity and anti-high-temperature stability of CeO_(2) catalyst

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2024年第2期42卷 334-344,I0004页

作者： Yi Zhu Xingyu Liu wei shi Jia Li Changbing Ye Ruimei Fang Huifeng Zhu Shanhu Chen Li Lan College of Chemistry Biology and Environment Yuxi Normal UniversityYuxi 653100China Institute of Biology and Environmental Engineering Yuxi Normal UniversityYuxi 653100China College of Environment and Resources Chongqing Technology and Business UniversityChongqing 400067China College of Chemistry and Chemical Engineering Jiangxi Science and Technology Normal UniversityNanchang 330013China College of Materials and Mechatronics Jiangxi Science and Technology Normal UniversityNanchang 330013China

In order to analyze the influence of the addition of yttrium and manganese on the soot combustion performance and high temperature stability of CeO_(2) catalyst,a series of Y/Mn-modified CeO_(2) catalysts were prepared.The effects of structural properties,textural properties,oxygen vacancies,Ce^(3+),surface adsorbed oxygen species,reduction properties and desorption properties of oxygen species on the activity were analyzed by various characterization methods.The results of the activity test show that the addition of manganese is beneficial to enhancement of the activity,while the addition of yttrium increases the amount of reactive oxygen species,but decreases the activity.After aging at 700℃,the activity of the CeMn catalyst decreases most sharply,while the catalytic activity of the CeY catalyst can be maintained to a certain extent.Interestingly,the addition of yttrium and manganese at the same time can stabilize the activity.The fundamental reason is that yttrium and manganese move to the surface of the solid solution after aging,which increases the reduction performance of the catalyst,thus contributing to the increase of activity.Although the activity of CeYMn catalyst decreases after aging at 800℃,it is still higher than that of other catalysts aged at 700℃.

关键词： CeO_(2)catalyst Soot catalytic combustion Diesel pollution control Rare earths High temperature stability Low temperature reduction performance

维普期刊数据库

Aberration correction for deformable-mirror-based remote focusing enables high-accuracy whole-cell super-resolution imaging

在线全文

学校读者我要写书评

暂无评论

Photonics Research 2024年第4期12卷 821-832页

作者： wei shi YINGCHUAN HE JIANLIN WANG LULU ZHOU JIANwei CHEN LIwei ZHOU ZEYU XI ZHEN WANG KE FANG YIMING LI Department of Biomedical Engineering Southern University of Science and TechnologyShenzhen 518055China

Single-molecule localization microscopy(SMLM)enables three-dimensional(3D)investigation of nanoscale structures in biological samples,offering unique insights into their organization.However,traditional 3D super-resolution microscopy using high numerical aperture(NA)objectives is limited by imaging depth of field(DOF),restricting their practical application to relatively thin biological samples.Here,we developed a unified solution for thick sample super-resolution imaging using a deformable mirror(DM)which served for fast remote focusing,optimized point spread function(PSF)engineering,and accurate aberration correction.By effectively correcting the system aberrations introduced during remote focusing and sample aberrations at different imaging depths,we achieved high-accuracy,large DOF imaging(~8μm)of the whole-cell organelles[i.e.,nuclear pore complex(NPC),microtubules,and mitochondria]with a nearly uniform resolution of approximately 35 nm across the entire cellular volume.

关键词： enable mirror resolution

维普期刊数据库

An Enhanced Clustering-Based(k, t)-Anonymity Algorithm for Graphs

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Electronics 2024年

作者： Yuanyuan WANG Xing ZHANG Zhiguang CHU wei shi Xiang LI School of Electronics and Information Engineering Liaoning University of Technology Key Laboratory of Security for Network and Data in Industrial Internet of Liaoning Province Faculty of Information Technology Beijing University of Technology

As people become increasingly reliant on the Internet, securely storing and publishing private data has become an important issue. In real life, the release of graph data can lead to privacy breaches, which is a highly challenging problem. Although current research has addressed the issue of identity disclosure, there are still two challenges: First, the privacy protection for large-scale datasets is not yet comprehensive; Second, it is difficult to simultaneously protect the privacy of nodes, edges, and attributes in social networks. To address these issues, this paper proposes a(k, t)-graph anonymity algorithm based on enhanced clustering. The algorithm uses k-means++ clustering for k-anonymity and t-closeness to improve k-anonymity. We evaluated the privacy and efficiency of this method on two datasets and achieved good results. This research is of great significance for addressing the problem of privacy breaches that may arise from the publication of graph data.

关键词：

Dry Breeding and Dry Planting Techniques for Indica Hybrid Rice in Karst Mountain Areas of Gejiu City

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Plant Diseases and Pests 2024年第2期15卷 34-36页

作者： Guifen WANG wei shi Gejiu Agricultural Technology Extension Center Gejiu 661000China Gejiu Farmer Science and Technology Education and Training Center Gejiu 661000China

Based on the arable land situation in Gejiu City,upland dry planting of indica hybrid rice is being expanded in Karst mountain areas with a rainfall of over 1400 mm and an altitude of 1100-1600 m to develop grain production.This paper gives a specific description of hybrid rice upland dry seedling technology,upland transplanting technology,fertilization technology,field management,weed prevention and control technology,and disease and pest control.

关键词： Karst mountain area Hybrid rice Dry breeding Dry planting

Online Capacitor Voltage Transformer Measurement Error State Evaluation Method Based on In-Phase Relationship and Abnormal Point Detection

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Smart Grid and Renewable Energy 2024年第1期15卷 34-48页

作者： Yongqi Liu wei shi Jiusong Hu Yantao Zhao Pang Wang College of Railway Transportation Hunan University of Technology Zhuzhou China Wasion Group Co. Ltd. Changsha China

The assessment of the measurement error status of online Capacitor Voltage Transformers (CVT) within the power grid is of profound significance to the equitable trade of electric energy and the secure operation of the power grid. This paper advances an online CVT error state evaluation method, anchored in the in-phase relationship and outlier detection. Initially, this method leverages the in-phase relationship to obviate the influence of primary side fluctuations in the grid on assessment accuracy. Subsequently, Principal Component Analysis (PCA) is employed to meticulously disentangle the error change information inherent in the CVT from the measured values and to compute statistics that delineate the error state. Finally, the Local Outlier Factor (LOF) is deployed to discern outliers in the statistics, with thresholds serving to appraise the CVT error state. Experimental results incontrovertibly demonstrate the efficacy of this method, showcasing its prowess in effecting online tracking of CVT error changes and conducting error state assessments. The discernible enhancements in reliability, accuracy, and sensitivity are manifest, with the assessment accuracy reaching an exemplary 0.01%.

关键词： Capacitor Voltage Transformer Measurement Error Online Monitoring Principal Component Analysis Local Outlier Factor

Uncovering Chemical Interactions between Danshen and Danggui Using Liquid Chromatography–Mass Spectrometry and Network Pharmacology-Based Research on Stroke

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Traditional Chinese Medicine 2024年第2期10卷 230-243页

作者： Han-Qing Pang Jia-Xiu Guo Xiao-Yu Shang Jian Wang Hui Liu Jing Tian Lu Zhang Jian-Bin Wang wei shi Bing-Chun Yan Liang Liu Department of Pharmacy School of Medicine Institute of Translational Medicine Yangzhou University School of Medicine Jiangsu Key Laboratory of Integrated Traditional Chinese and Western Medicine for Prevention and Treatment of Senile Diseases Yangzhou University School of Chemistry and Pharmaceutical Sciences State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources(Guangxi Normal University) Yangzhou Food and Drug Inspection and Testing Center

Objective: The objective of this study was to decipher chemical interactions between Danshen and Danggui using liquid chromatography–mass spectrometry(LC-MS) and explore the mechanisms of Danshen–Danggui against stroke using network pharmacology and molecular docking. Materials and Methods: First, the chemical compounds of Danshen–Danggui were profiled using ultra-high-performance liquid chromatography(HPLC)-quadrupole time-of-flight MS. Accurately characterized compounds in various proportions of Danshen–Danggui were quantified using HPLC combined with triple quadrupole electrospray tandem MS. Network pharmacology was used to uncover the essential mechanisms of action of Danshen–Danggui against stroke. Discovery Studio Software was used for the molecular docking verification of key active chemicals and stroke-related targets. Results: A total of 53 compounds were characterized, and 22 accurately identified constituents(10 phenolic acids, 8 phthalides, and 4 tanshinones) were quantified in 15 proportions of Danshen–Danggui. The quantification results showed that Danggui significantly increased the dissolution of most phenolic acids(compounds from Danshen), whereas Danshen promoted the dissolution of most phthalides(compounds from Danggui). Overall, the combination of Danshen and Danggui at a 1:1 ratio resulted in the maximum total dissolution rate. Further network pharmacology and molecular docking results indicated that Danshen–Danggui exerted anti-stroke effects mainly by regulating inflammation-related(tumor necrosis factor, hypoxia-inducible factor, and toll-like receptor) signaling pathways, which ranked among the top three pathways based on Kyoto Encyclopedia of Genes and Genomes(KEGG) enrichment analysis. Conclusion: The chemical compounds in Danshen–Danggui could interact with each other to increase the dissolution of the most active compounds, which could provide a solid basis for uncovering the compatibility mechanisms of Danshen–Danggui and Danshen–Danggui-based formulae.

关键词： Chemical interactions Danggui Danshen liquid chromatography–mass spectrometry network pharmacology

Pijx confers broad-spectrum seedling and panicle blast resistance by promoting the degradation of ATP b subunit and OsRbohC-mediated ROS burst in rice

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Molecular Plant 2024年第4期17卷 672-675页

作者： Ning Xiao Yunyu Wu Xiaoxiang Zhang Zeyun Hao Zichun Chen Zefeng Yang Yue Cai Ruyi Wang Ling Yu Zhiping Wang Yue Lu wei shi Cunhong Pan Yuhong Li Changhai Zhou Jianju Liu Niansheng Huang Guangqing Liu Hongjuan Ji Shuhao Zhu Shuai Fang Yuese Ning Aihong Li 不详

(Molecular Plant 16,1832-1846,November 62023)The originally published version of this manuscript contained several small mistakes in the labels and legends of main and supplemental figures,along with a few small mistakes in the main text,that have now been corrected.Specifically,in Figure 6G,the label“NILGY31^(Pijx)”has been corrected to“NIL^(Pijx)”,and in the legend of Figure 6H,“PPL^(Pijx Piz-t)”and“PPL^(Pijx Pigm)”have been corrected to“NIL^(Piz-t Pijx)”and“PPL^(Pigm Pijx).”In Figure S8A。

关键词： seedling Figure panicle

Overcoming the biofilm barrier by cell-like microbubbles for the treatment of biofilm-associated implant infections

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Biomedical Engineering Communications 2024年第2期3卷 1-3页

作者： Yan-Ling Hu Jin-Gai Jiang Hui-Juan Cheng wei shi Yan-Ni Song Min Zhang Dong-Liang Yang College of Life and Health Nanjing Polytechnic InstituteNanjing 210048China Hangzhou Huasu Industry Co. Ltd.Hangzhou 310012China Key Laboratory of Flexible Electronics(KLOFE)and Institute of Advanced Materials(IAM) School of Physical and Mathematical SciencesNanjing Tech University(NanjingTech)Nanjing 211816China

Although the advent of antibiotics has significantly improved the quality of life of infected patients,bacterial infections continue to pose a serious threat to public health[1,2].According to a recent report,within the next 30 years,bacterial infections are projected to surpass cancer in terms of lethality rates,resulting in an alarming 10 million deaths annually by 2050 due to the development of bacterial resistance[3].Moreover,the formation of bacterial biofilms hampers the penetration of antibacterial agents and inhibits the host immune response,making biofilm infections extremely challenging to treat[4-7].Hence,the development of innovative antimicrobial biofilm therapeutics is imperative.

关键词： infections annually treatment