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Tb^(3+)-nucleic acid probe-based label-free and rapid detection of mercury pollution in food

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Food Science and Human Wellness 2024年第2期13卷 993-998页

作者： Xuhan Xia Chenxi Zhou Yulin Zhu Yi Dong Qiang He Mohammad Rizwan Khan Yuanlong Chi Rosa Busquets Ruijie Deng Yao Ren College of Biomass Science and Engineering Healthy Food Evaluation Research CenterSichuan UniversityChengdu 610065China Department of Chemistry College of ScienceKing Saud UniversityRiyadh 11451Saudi Arabia School of Life Sciences Pharmacy and ChemistryKingston University LondonKingston Upon Thames KT12EEUK

Mercury is a threatening pollutant in food,herein,we developed a Tb^(3+)-nucleic acid probe-based label-free assay for mix-and-read,rapid detection of mercury *** assay utilized the feature of light-up fluorescence of terbium ions(Tb^(3+))via binding with single-strand *** ion,Hg^(2+)induced thymine(T)-rich DNA strand to form a double-strand structure(T-Hg^(2+)-T),thus leading to fluorescence *** on the principle,Hg^(2+)can be quantified based on the fluorescence of Tb^(3+),the limit of detection was 0.0689μmol/L and the linear range was 0.1-6.0μmol/*** to the specificity of T-Hg^(2+)-T artificial base pair,the assay could distinguish Hg^(2+)from other metal *** recovery rate was ranged in 98.71%-101.34%for detecting mercury pollution in three food *** assay is low-cost,separation-free and mix-to-read,thus was a competitive tool for detection of mercury pollution to ensure food safety.

关键词： Mercury pollution Food safety Nucleic acid probe Label-free Terbium

Exploration of potential biomarkers and therapeutic targets for trauma-related acute kidney injury

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Chinese Journal of Traumatology 2024年第2期27卷 97-106页

作者： Peng Qi Meng-Jie Huang Wei Wu Xue-Wen Ren Yong-Zhi Zhai Chen Qiu Hai-Yan Zhu Department of Emergency First Medical Center of Chinese PLA General HospitalBeijing100853China Department of Nephrology.First Medical Center of Chinese PLA General Hospital Beijing100853China Department of Anesthesiology.First Medical Center of Chinese PLA General Hospital Beijing100853China Department of Orthopedics Fourth Medical Center of Chinese PLA General HospitalBeijing100853China

Purpose:Acute kidney injury(AKI)is one of the most common functional injuries observed in trauma ***,certain trauma medications may exacerbate renal ***,the early detection of trauma-related AKI holds paramount importance in improving trauma ***:Qualified datasets were selected from public databases,and common differentially expressed genes related to trauma-induced AKI and hub genes were identified through enrichment analysis and the establishment of protein-protein interaction(PPI)***,the specificity of these hub genes was investigated using the sepsis dataset and conducted a comprehensive literature review to assess their *** raw data from both datasets were downloaded using R software(version 4.2.1)and processed with the"affy"package19 for correction and ***:Our analysis revealed 585 upregulated and 629 downregulated differentially expressed genes in the AKI dataset,along with 586 upregulated and 948 downregulated differentially expressed genes in the trauma ***,the establishment of the PPI network and subsequent topological analysis highlighted key hub genes,including CD44,CD163,TIMP metallopeptidase inhibitor 1,cytochrome b-245 beta chain,versican,membrane spanning 4-domains A4A,mitogen-activated protein kinase 14,and early growth response ***,their receiver operating characteristic curves displayed areas exceeding 75%,indicating good diagnostic ***,our findings postulated a unique molecular mechanism underlying trauma-related ***:This study presents an alternative strategy for the early diagnosis and treatment of trauma-related AKI,based on the identification of potential biomarkers and therapeutic ***,this study provides theoretical references for elucidating the mechanisms of trauma-related AKI.

关键词： Trauma Acutekidney injury Bioinformatic analysis Differentially expressed genes Biomarker

Synthesis of crystalline g-C_(3)N_(4) with rock/molten salts for efficient photocatalysis and piezocatalysis

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Green Energy & Environment 2024年第5期9卷 890-898页

作者： Tingting Xu Jung Hur Ping Niu Shulan Wang Sangwook Lee Sang-Eun Chun Li Li Department of Chemistry College of ScienceNortheastern UniversityShenyang110819China State Key Laboratory of Rolling and Automation Northeastern UniversityShenyang110819China School of Metallurgy Northeastern UniversityShenyang110819China School of Materials Science and Engineering Kyungpook National UniversityDaegu41566Republic of Korea School of Industrial Technology Advances Kyungpook National UniversityDaegu41566Republic of Korea

Graphitic carbon nitride(g-C_(3)N_(4))is emerging as a promising visible-light photocatalyst while the low crystallinity with sluggish charge separation/migration dynamics signiﬁcantly restricts its practical ***,synthesizing highly crystalline g-C_(3)N_(4) with sufﬁcient surface activities still remains ***,different from using alkali molten salts which is commonly reported,we propose an approach for synthesis of highly crystalline g-C_(3)N_(4) with FeCl3/KCl rock/molten mixed *** rock salt can serve as the structure-directing template while molten salt provides the required liquid medium for ***,the synthesized photocatalyst showed further enhanced crystallinity and improved surface area along with high p/p*excitation compared with crystalline C_(3)N_(4) prepared from conventional molten-salt *** catalytically advantageous features lead to its superior photocatalytic and piezocatalytic activities with a high reactivity for overall water splitting that is not commonly reported for C_(3)N_(4).This work provides an effective strategy for structural optimization of organic semiconductor based materials and may inspire new ideas for the design of advanced photocatalysts.

关键词： High crystallinity Carbon nitride Photocatalysis Piezocatalysis Overall water splitting

CONVERGENCE ANALYSIS OF SOME FINITE ELEMENT PARALLEL ALGORITHMS FOR THE STATIONARY INCOMPRESSIBLE MHD EQUATIONS

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Journal of Computational Mathematics 2024年第1期42卷 49-70页

作者： Xiaojing Dong Yinnian He Hunan Key Laboratory for Computation and Simulation in Science and Engineering Key Laboratory of Intelligent Computing&Information Processing of Ministry of EducationSchool of Mathematics and Computational ScienceXiangtan UniversityXiangtan 411105China Institute of Applied Physics and Computational Mathematics Beijing 100088China School of Mathematics and Statistics Xi'an Jiaotong UniversityXi'an 710049China

By combination of iteration methods with the partition of unity method(PUM),some finite element parallel algorithms for the stationary incompressible magnetohydrodynamics(MHD)with different physical parameters are presented and *** algorithms are highly *** first,a global solution is obtained on a coarse grid for all approaches by one of the iteration *** parallelized residual schemes,local corrected solutions are calculated on finer meshes with overlapping *** subdomains can be achieved flexibly by a class of *** proposed algorithm is proved to be uniformly stable and ***,one numerical example is presented to confirm the theoretical findings.

关键词： Partition of unity method Local and parallel algorithm Finite element method Iteration methods Magnetohydrodynamics

Monomer-dependent synthesis of secondary amine-linked triazine-based two-dimensional polymers nanosheets

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Science China Chemistry 2020年第7期63卷 966-972页

作者： Ranran Zhao Chaoqun Niu Mohamed FAly Aboud Imran Shakir Chengbing Yu Yuxi Xu School of Materials Science and Engineering Shanghai UniversityShanghai 201800China School of Engineering Westlake UniversityHangzhou 310024China Sustainable Energy Technologies Center College of EngineeringKing Saud UniversityRiyadh 11421Kingdom of Saudi Arabia

Expanding the structural diversity of crystalline two-dimensional polymers(2DPs) is highly desired but remains a considerable challenge. Herein we report the first synthesis of novel crystalline secondary amine-linked triazine-based 2DPs(SAT-2DPs) by using benzidine or 4, 4′′-diamino-p-terphenyl and cyanuric chloride under solvothermal conditions. We find the structures of diamine-based monomers play a crucial role in deciding whether the synthesized material is crystalline 2DPs nanosheets or amorphous nanoparticles, which is unexpected and provides an important understanding of the 2D polymerization *** obtained SAT-2DPs not only show a lateral size of micrometers and an ultrathin thickness of a few nanometers, but also demonstrate high crystallinity with a unique ABC stacking configuration, excellent solvent dispersibility and superior thermal stability. In addition, the resultant SAT-2DPs are used to guide uniform lithium-ion deposition due to their abundant nitrogen atoms and ordered open channels. The assembled asymmetric coin cells(Li|Cu) with SAT-2DPs realize the average coulombic efficient up to 99.3% during discharge-charge cycles. This work provides valuable insights into the synthesis of new 2DPs for various applications.

关键词： nanosheets,two-dimensional polymers crystalline solution synthesis monomer-dependent

Optical design of a compact and high-transmittance compressive sensing imaging system enabled by freeform optics

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Chinese Optics Letters 2021年第11期19卷 117-123页

作者： Dewen Cheng Hailong Chen Tong Yang Jun Ke Yang Li Yongtian Wang School of Optics and Photonics Beijing Institute of TechnologyBeijing 100081China Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Advanced Optical Remote Sensing Technology School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Using compressive sensing for imaging has many applications, and it is an important branch of computational *** this Letter, freeform surfaces are introduced in the hardware optical system design of a compressive sensing imager. The system works under the medium wave infrared band and realizes a 16× compression with a field-of-view of 7.5°× 6°. Good imaging performance is achieved in both the entire system and the freeform objective optics. Compared with the system using all spherical lenses, the volume of the freeform system is about 1/3 smaller, and the total transmittance is about 56%higher, which shows the benefits of using freeform surfaces for compressive sensing and computational imaging.

关键词： compressive sensing freeform optics compactness and high-transmittance joint optimization

FreeformNet:fast and automatic generation of multiple-solution freeform imaging systems enabled by deep learning

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光子学研究:英文版 2023年第8期11卷 1408-1422页

作者： BOYU MAO TONG YANG HUIMING XU WENCHEN CHEN DEWEN CHENG YONGTIAN WANG Beijing Engineering Research Center of Mixed Reality and Advanced Display School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China Beijing Key Laboratory of Advanced Optical Remote Sensing Technology School of Optics and PhotonicsBeijing Institute of TechnologyBeijing 100081China

Using freeform optical surfaces in lens design can lead to much higher system specifications and performance while significantly reducing volume and ***,because of the complexity of freeform surfaces,freeform optical design using traditional methods requires extensive human effort and sufficient design experience,while other design methods have limitations in design efficiency,simplicity,and *** learning can solve these issues by summarizing design knowledge and applying it to design tasks with different system and structure *** propose a deep-learning framework for designing freeform imaging *** generate the data set automatically using a combined sequential and random system evolution *** combine supervised learning and unsupervised learning to train the network so that it has good generalization ability for a wide range of system and structure parameter *** generated network FreeformNet enables fast generation(less than 0.003 s per system)of multiple-solution systems after we input the design requirements,including the system and structure *** can filter and sort solutions based on a given criterion and use them as good starting points for quick final optimization(several seconds for systems with small or moderate field-of-view in general).The proposed framework presents a revolutionary approach to the lens design of freeform or generalized imaging systems,thus significantly reducing the time and effort expended on optical design.

关键词： network simplicity starting

Covalent Triazine Framework Nanosheets for Efficient Energy Storage and Conversion

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Chemical Research in Chinese Universities 2020年第4期36卷 640-647页

作者： SUN Tian WANG Congxu XU Yuxi School of Engineering Wesllake UniversityHangzhou 310024P.R.China

Two-dimensional crystalline covalent triazine frameworks(CTFs)have received much attention because oftheir unique triazine structure,which endows CIFs with high thernal and chemical stability,high proportion of nitrogen and permanent *** on this unique structure *** have shown great potential in energy storage and conversion due to the intrinsically strong conjugated *** electron and rich active *** carrier(electron,hole or ion)transport can't reach the deep active sites and charge diffusion was impeded by defects in bulk ***,to break through this barrier,increasing attention has been paid to get few lavered CTFs or CTFs nanosheets in order to shorten the pathways of charge diffiusion and expose more active *** review summarizes the synthetic methodologies of CTFs nanosheets and the potential application in photocatalvtic and electrochemical energy storage and conversion.

关键词： Bulk crystalline covalent triazine framework(CIF) CTFs nanosheet Synthesis Photocatalysis Electrochemical energy storage

Two-dimensional polymer nanosheets for efficient energy storage and conversion

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Nano Research 2021年第6期14卷 2023-2036页

作者： Yumei Ren Chengbing Yu Zhonghui Chen Yuxi Xu School of Materials Science and Engineering Shanghai UniversityShanghai201800China School of Materials Science and Engineering Zhengzhou University of AeronauticsZhengzhou450046China School of Engineering Westlake UniversityHangzhou310024China Key Lab for Special Functional Materials of Ministry of Education School of Materials Science and EngineeringHenan UniversityKaifeng475004China

As a promising graphene analogue,two-dimensional(2D)polymer nanosheets with unique 2D features,diversified topological structures and as well as tunable electronic properties,have received extensive attention in recent *** in this review,we summarized the recent research progress in the preparation methods of 2D polymer nanosheets,mainly including interfacial polymerization and solution *** also discussed the recent research advancements of 2D polymer nanosheets in the fields of energy storage and conversion applications,such as batteries,supercapacitors,electrocatalysis and ***,on the basis of their current development,we put forward the existing challenges and some personal perspectives.

关键词： two-dimensional(2D)polymer nanosheets 2D polymerization batteries supercapacitors photo(electro)catalysis