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Towards advanced zinc anodes by interfacial modification strategies for efficient aqueous zinc metal batteries

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Journal of Energy Chemistry 2024年第6期93卷 79-110,I0003页

作者： changchun Fan Weijia Meng Jiaye Ye Key Laboratory of Bio-Inspired Smart Interfacial science and Technology Ministry of EducationSchool of ChemistryBeihang UniversityBeijing 100191China Shaanxi Key Laboratory of New Transportation Energy and Automotive Energy Saving School of Energy and Electrical EngineeringChang’an UniversityXi’an 710061ShaanxiChina school of Chemistry and Physics Faculty of ScienceQueensland University of TechnologyBrisbaneQLD 4001Australia Centre for Materials science Queensland University of TechnologyBrisbaneQLD 4001Australia

Developing sustainable and clean energy sources(e.g.,solar,wind,and tide energy)is essential to achieve the goal of carbon *** to the discontinuous and inco nsistent nature of common clean energy sources,high-performance energy storage technologies are a critical part of achieving this *** zinc metal batteries(AZMBs)with inherent safety,low cost,and competitive performance are regarded as one of the promising candidates for grid-scale energy ***,zinc metal anodes(ZMAs)with irreversible problems of dendrite growth,hydrogen evolution reaction,self-corrosio n,and other side reactions have seriously hindered the development and commercialization of *** increasing number of researchers are focusing on the stability of ZMAs,so assessing the effectiveness of existing research strategies is critical to the development of *** review aims to provide a comprehensive overview of the fundamentals and challenges of *** rch strategies for interfacial modification of ZMAs are systematically *** features of artificial interfacial coating and in-situ interfacial coating of ZMAs are compared and discussed in detail,as well as the effect of modified interfacial ZMA on the full-battery ***,perspectives are provided on the problems and challenges of *** review is expected to offer a constructive reference for the further development and commercialization of AZMBs.

关键词： Aqueous zinc metal batteries Zinc metal anode Interfacial modification Artificial interfacial coating In-situ interfacial coating

Quantifying quantum entanglement via machine learning models

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Communications in Theoretical Physics 2024年第7期76卷 52-56页

作者： changchun Feng Lin Chen LMIB(Beihang university) Ministry of EducationBeijing 100191China school of Mathematical sciences Beihang UniversityBeijing 100191China International Research Institute for Multidisciplinary science Beihang UniversityBeijing 00191China

Quantifying entanglement measures for quantum states with unknown density matrices is a challenging *** learning offers a new perspective to address this *** training machine learning models using experimentally measurable data,we can predict the target entanglement *** this study,we compare various machine learning models and find that the linear regression and stack models perform better than *** investigate the model's impact on quantum states across different dimensions and find that higher-dimensional quantum states yield better ***,we investigate which measurable data has better predictive power for target entanglement *** correlation analysis and principal component analysis,we demonstrate that quantum moments exhibit a stronger correlation with coherent information among these data features.

关键词： quantum information entanglement predict machine learning coherence

Portable fluorescence instrument for detecting membrane integrity in membrane bioreactor (MBR)

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Frontiers of Environmental science & Engineering 2024年第2期18卷 121-131页

作者： Yang Yu changchun Xin Yuxiang Liu Fei Gao Lei Zhang Hui Jia Jie Wang State Key Laboratory of Separation Membranes and Membrane Processes Tiangong UniversityTianjin 300387China school of Environmental science and Engineering Tiangong UniversityTianjin 300387China school of Environmental science and Engineering Tianjin UniversityTianjin 300072China Shenyang Academy of Environmental sciences Shenyang 110167China Cangzhou Institute of Tiangong university Tiangong UniversityCangzhou 061000China

This study proposed the design, fabrication, and assembly of membrane integrity detection instruments in membrane bioreactors (MBR) based on fluorescence spectroscopy. Based on the PARAFAC model, we found that the peak at 280/335 nm strengthened after membrane breakage. The peak at 340/430 nm reflected the sludge concentration in the MBR and reduced the influence of internal filtration effects on detection. Therefore, we determined that the dual-LED light source excitation detection system can detect tryptophan-like substances at 280 nm (T-peak) and humic acid at 340 nm (C-peak). T-peak was identified as the core index indicating membrane integrity. Moreover, the C-peak is the reference indicator factor for a sensitive response to changes in the sludge concentration. The portable fluorescence instrument exhibited high sensitivity and good feedback accuracy compared to particle counting and turbidity detection, where the log reduction value was greater than 3.5. This overcomes the disadvantage of false alarms in particle counters and is not affected by the position of the pump system. This portable instrument provides a flexible and highly sensitive method for the assessment of industrial membrane integrity.

关键词： Membrane integrity Fluorescence spectrum Portable instrument Membrane bioreactor

Anisotropism of the Non-Smooth Surface of Butterfly Wing

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Journal of Bionic Engineering 2009年第1期6卷 71-76页

作者： Gang Sun~(1,2), Yan Fang~(1,2), Qian Cong~1, Lu-quan Ren~11. Key Laboratory of Terrain-Machine Bionics Engineering (Ministry of Education, china), Jilin university,changchun 130022, P. R. china2. school of life science, changchun normal university, changchun 130032, P. R. china Key Laboratory of Terrain-Machine Bionics Engineering (Ministry of Education China) Jilin University Changchun P. R. China school of life science Changchun Normal University Changchun P. R. China

Twenty-nine species of butterflies were collected for observation and determination of the wing surfaces using a Scanning Electron Microscope(SEM).Butterfly wing surface displays structural anisotropism in micro-,submicro- and *** scales on butterfly wing surface arrange like overlapping roof *** are submicrometric vertical gibbosities,horizontal links,and nano-protuberances on the ***-incline-then-drip method and first-drip-then-incline method were used to measure the Sliding Angle(SA)of droplet on butterfly wing surface by an optical Contact Angle(CA)measuring system. Relatively smaller sliding angles indicate that the butterfly wing surface has fine self-cleaning *** different SAs in various directions indicate the anisotropic self-cleaning property of butterfly wing *** SAs on the butterfly wing surface without scales are remarkably larger than those with scales,which proves the crucial role of scales in determining the self-cleaning *** wing surface is a template for design and fabrication ofbiomimetic materials and self-cleaning *** work may offer insights into how to design directional self-cleaning coatings and anisotropic wetting surface.

关键词： micro-/nano-structure anisotropism self-cleaning super-hydrophobicity sliding angle

Engagement of PSGL-1 enhances β2-integrin-involved adhesion of neutrophils to recombinant ICAM-1

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Acta Pharmacologica Sinica 2006年第5期27卷 617-622页

作者： Xiao-guang WANG~(2,3) Yan-ping CHENG~4 Xue-qing BA~(2,5) ~2Institute of Genetics and Cytology Northeast normal university,changchun 130024,china:~3Department of Biology,changchun normal College,changchun 130032,china ~4College of life science.Jilin normal university,Siping 136001,china Institute of Genetics and Cytology Northeast Normal University Changchun China Department of Biology Changchun Normal College Changchun China College of life science Jilin Normal University Siping China

Aim:The interactions of selectins and their ligands initiate the process of leuko-cyte migrating into inflamed tissue.P-selectin glycoprotein ligand 1 （PSGL-1） isthe best characterized ligand of selectins,and has been demonstrated to mediatethe adhesion of leukocytes to all three selectins in ***-1 not only func-tions as an anchor molecule to capture the leukocytes to the activated endothelialcells by its interaction with selectins,but also transduces the signals to *** present work aimed to investigate the mechanism by whichPSGL-1-mediated signal activates neutrophils and enhances the adhesion to theendothelial ***:We detected the effects of the engagement of PSGL-1with monoclonal antibodies （mAb） or P-selectin on the adhesion of neutrophils tothe recombinant intercellular adhesion molecule-1 （ICAM-1）,and on the expres-sion of β***,the role of cytoskeleton in these process wasstudied by using inhibitor cytochalasin ***:The engagement of PSGL-Iincreased the expression of β2-integrin on the surface of neutrophils and en-hanced the adhesion of neutrophils to the recombinant *** againstCD18 impaired the adhesion of PSGL-1-engaged neutrophils to ***,the inhibitor cytochalasin B largely blocked the increase of CD 18 expression aswell as the adhesion of PSGL-1-engaged neutrophils to ***:The PSGL-1-transduced signals can enhance β2-integrin-involved adhesion ofneutrophils to the recombinant ICAM-1,and this process depends on the dynam-ics of cytoskeleton.

关键词： P-selectin ligand protein intercellular signaling peptides and proteins intercellular adhesion molecule-1 CD 18 antigens

BAF Complex Is Closely Related to and Interacts with NF1/CTF and RNA Polymerase Ⅱ in Gene Transcriptional Activation

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Acta Biochimica et Biophysica Sinica 2005年第7期37卷 440-446页

作者： Li-Hui ZHAO~(1,2) Xue-Qing BA~1 Xiao-Guang WANG~3 Xiao-Juan ZHU~1 Li WANG~1 Xian-Lu ZENG~1 1 Institute of Genetics and Cytology,Northeast normal university,changchun 130024,china 2 College of Agronomy,Jilin Agricultural university,changchun 130118,china 3 Department of Biology,changchun normal College,changchun 130032,china Institute of Genetics and Cytology Northeast Normal UniversityChangchun 130024 China College of Agronomy Jilin Agricultural UniversityChangchun 130118 China Department of Biology Changchun Normal CollegeChangchun 130032 China

Brg-or hBrm-associated factor (BAF) complexes,a chromatin-remodeling complex family ofmammalian cells,facilitate transcriptional activity by remodeling nucleosome ***1 is the coresubunit of Brg-associated factor *** the present study,we investigated the spatial relationshipbetween Brg1 and nuclear factor 1 (NF1/CTF) and RNA polymerase Ⅱ (RNAP Ⅱ) upon gene transcriptionalactivation in vivo by employing immuno-gold *** data showed that Brg1 was closely co-localizedwith NF1/CTF and RNAP Ⅱ in HeLa ***,the co-immunoprecipitation assay further revealedthat Brg1 can be isolated together with NF1/CTF and RNAP Ⅱ in the ConA-stimulated,but not the resting,T *** combined results suggested that BAF complexes can interact with NF1/CTF and RNAPⅡ,and this interaction is closely dependent on the activation of gene transcription.

关键词： BAF complex NF1/CTF RNAP Ⅱ gene transcription

The restricted EM algorithm under linear inequalities in a linear model with missing data

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science china Mathematics 2005年第6期48卷 819-828页

作者： ZHENG Shurong, SHI Ningzhong & GUO Jianhua school of Mathematics and Statistics, Northeast normal university, changchun 130024, china Institute of Mathematics, Jilin university, changchun 130012, china school of Mathematics and Statistics Northeast Normal University Changchun China Institute of Mathematics Jilin University Changchun China

This paper discusses the maximum likelihood estimate of β under linear inequalities A0β≥ a in a linear model with missing data, proposes the restricted EM algo rithm and proves the convergence.

关键词： EM algorithm, linear model, maximum likelihood estimate, missing data.

A general type of twisted anomaly cancellation formulas

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science china Mathematics 2010年第7期53卷 1684-1695页

作者： WANG Yong school of Mathematics and Statistics, Northeast normal university, changchun 130024, china school of Mathematics and Statistics Northeast Normal University Changchun China

For even-dimensional manifolds, we prove some twisted anomaly cancellation formulas which generalize some well-known cancellation formulas. For odd dimensional manifolds, we obtain some modularly invariant characteris... 详细信息

关键词： modular invariance transgression cancellation formulas

Analysis of Low-polar Ginsenosides in Steamed Panax Ginseng at High-temperature by HPLC-ESI-MS/MS

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Chemical Research in Chinese Universities 2012年第1期28卷 31-36页

作者： ZHANG Yu-chi1,2, PI Zi-feng1, LIU Chun-ming2, SONG Feng-rui1, LIU Zhi-qiang1 and LIU Shu-ying1 1. changchun Center of Mass Spectrometry, changchun Institute of Applied Chemistry, Chinese Academy of sciences, changchun 130022, P. R. china 2. Central Laboratory, changchun normal university, changchun 130032, P. R. china changchun Center of Mass Spectrometry Changchun Institute of Applied Chemistry Chinese Academy of Sciences Changchun 130022 Central Laboratory Changchun Normal University Changchun 130032

A high performance liquid chromatography coupled with electrospray ionization-tandem mass spectrome try（HPLC-ESI-MS/MS） method was developed for the analysis and identification of ginsenosides in the extracts of raw Panax ginseng（RPG） and steamed Panax ginseng at high temperatures（SPGHT）. A total of 25 ginsenosides were extracted include of which 10 low-polar ginsenosides, such as ginsenosides F4, Rk3, Rh4, 20S-Rg3, 20R-Rg3 and so on, were identified according to their HPLC retention time and MS/MS data. The results indicated that the low polar ginsenosides were seldom found in RPG. For the exploration of the transformation pattern of the ginsenosides in steam processing, the standards of ginsenosides Re, Rg1, Rb1, Rc, Rb2, Rb3 and Rd were selected and hydrolyzed at a temperature of 120 oC. The results show that these polar ginsenosides can be converted to low-polar ginsenosides such as Rg2, Rg6, F4, Rk3 and Rg5 by hydrolyzing the sugar chains.

关键词： Ginsenoside Hydrolysis Steamed Panax ginseng High performance liquid chromatography coupled withelectrospray ionization-tandem mass spectrometry(HPLC-ESI-MS/MS)