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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li wen‑Xia su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China Key Laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou Key Laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

Two-dimensional superlattices intercalated with chiral molecules for spin selectivity

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Science China Materials 2022年第11期65卷 3184-3185页

作者： wen su Fanglong Yuan CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Physics Chemistryand Biology(IFM)Linköping UniversityLinköping 58183Sweden Department of Electrical and Computer Engineering University of TorontoTorontoM5S 2E8 OntarioCanada

Chirality,one of the most fundamental characteristics of nature,plays an important role in different fields ranging from physics to astronomy,chemistry and biology[1].Materials with certain chirality usually show unique optical and photophysical *** chiral-induced spin selectivity(CISS)effect,which was first reported in 1999,is considered as one of the most important spin-related properties of chiral *** electron transportation through chiral materials depends on the electron *** is,the electrons with a certain spin state such as spin-up state can pass through the chiral materials more easily in one direction,while the transportation of electrons in the spin-down state will be ***,the distinct advantage of CISS effect opens up the possibility to control and manipulate the spin orientation of electrons without using external magnetic fields,which is promising for the fabrication of new spintronic devices[2].

关键词： properties materials chiral

Crop plant signaling for real-time plant identification in smart farm: A systematic review and new concept in artificial intelligence for automated weed control

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Artificial Intelligence in Agriculture 2020年第1期4卷 262-271页

作者： wen-Hao su China Agricultural University College of Engineering17 Qinghua East RoadHaidianBeijing 100083China University of California-Davis Department of Biological and Agricultural EngineeringOne Shields AvenueDavisCA 95616USA

The continued emergence of herbicide-resistant weeds and the increasing labor costs are threatening the ability of growers to manage weeds and maintain *** smart farm with the advantage of non-invasive and high-efficiency operation plays an important role in increasing the sustainability of agricultural system as it can optimize crop inputs such as herbicides while preserving resources including soil and *** automatic weed control system requires a sensing subsystem capable of detecting and distinguishing crop plants from *** overlapping plants remain a challenge for successful detection of *** plant signaling is a new robot-plant interaction technique that allows the visualization of exogenous fluorescent signals applied to crop plants for crop/weed *** on all published articles in the leading edge of knowledge,a comprehensive review of the mushrooming crop plant signaling for discriminations of weeds and crops is *** discussion outlines the significant progress that has been made in developing new and more robust automated systems along with the current challenges and future *** paper details the promise of crop plant signaling for accurate and automated plant recognitions in cropping *** is no doubt that this review is of great significance to scholars in related research field to study the solutions to real-time weed control.

关键词： Crop plant signaling Robot-plant interaction Fluorescent compound Weed control

Aggregation-induced dual-color luminogen with enhanced chiroptical property

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Science China Chemistry 2022年第9期65卷 1679-1680页

作者： wen su Fanglong Yuan CAS Center for Excellence in Nanoscience National Center for Nanoscience and TechnologyBeijing 100190China Department of Physics Chemistryand Biology(IFM)Linkoping UniversityLinkoping 58183Sweden Department of Electrical and Computer Engineering University of TorontoTorontoM5S 2E8 OntarioCanada

Aggregation-induced emission(AIE),which was first proposed by Tang et al.[1]in 2001,describes a photophysical phenomenon that organic molecules can show much stronger light emission in aggregated state than that of si... 详细信息

关键词： state property diluted

Novel Highly Selective Fluorescent Chemosensors for Hg（Ⅱ）

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Chemical Research in Chinese Universities 2013年第4期29卷 657-662页

作者： su wen-qi YANG Bing-qin Key Laboratory of Synthetic and Natural Functional Molecule Chemistry Ministry of Education Department of Chemistry Northwest University Xi'an 710069 P. R. China

Based on Rhodamine,two novel fluorescent Hg2＋ chemosensors（R1,R2） were synthesized from inexpensive starting *** were designed and synthesized with o-aminophenol and o-phenylenediamine derivatives as the Hg2＋ chelator,the comparison between the photophysical properties of two chemosensor molecules was *** chemosensors were designed with a photoinduced electron transfer（PET） *** binding to Hg2＋ which blocks the PET process,the fluorescence intensity of the chemosensors was enhanced by up to *** exhibit very strong fluorescence responses to Hg2＋ and have remarkably higher selectivity for Hg2＋ than for other metal ions including K＋,Na＋,Ca2＋,Mg2＋,Cd2＋,Mn2＋,Ni2＋,Co2＋,Zn2＋,Cu2＋,Cr3＋,Fe3＋,pb2＋,Ag＋,Al3＋,Fe2＋ and Sn2＋ in Tris-HC1/sodium phosphate *** fluorescence enhancement of R2 towards Hg2＋ maintains stable in wide pH span（6.4-8.8） aqueous solutions.

关键词： Fluorescent chemosensor Mercury ion Sensor Rhodamine fluorophore Fluorescence intensity

Geometry of Rectangular Block Triangular Matrices

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Acta Mathematica Sinica,English Series 2009年第12期25卷 2035-2054页

作者： Li Ping HUANG su wen ZOU School of Mathematics and Computing Science Changsha University of Science and Technology Changsha 410076 P. R. China Liuzhou Senior High School Liuzhou 545006 P. R. China

Let D be any division ring, and let T（mi,ni,k） be the set of k × k （k ≥ 2） rectangular block triangular matrices over D. For A, B ∈ T（mi,ni,k）, if rank（A - B） = 1, then A and B are said to be adjacent and denoted by A -B. A map T ： T（mi,ni,k） -〉 T（mi,ni,k） is said to be an adjacency preserving map in both directions if A - B if and only if φ（A） φ（B）. Let G be the transformation group of all adjacency preserving bijections in both directions on T（mi,ni,k）. When m1,nk ≥ 2, we characterize the algebraic structure of G, and obtain the fundamental theorem of rectangular block triangular matrices over D.

关键词： geometry of matrices triangular matrix adjacency preserving maximal set

Differentially Private Precision Matrix Estimation

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Acta Mathematica Sinica,English Series 2020年第10期36卷 1107-1124页

作者： wen Qing su Xiao GUO Hai ZHANG School of Mathematics Northwest UniversityXi'an 710127P.R.China Faculty of Information Technology Macao University of Science and TechnologyMacao 999078P.R.China Key Laboratory of Advanced Theory and Application in Statistics and Data Science(East China Normal University) Ministry of EducationShanghai 200062P.R.China

In this paper, we study the problem of precision matrix estimation when the dataset contains sensitive information. In the differential privacy framework, we develop a differentially private ridge estimator by perturbing the sample covariance matrix. Then we develop a differentially private graphical lasso estimator by using the alternating direction method of multipliers(ADMM) ***, we prove theoretical results showing that the differentially private ridge estimator for the precision matrix is consistent under fixed-dimension asymptotic, and establish a convergence rate of differentially private graphical lasso estimator in the Frobenius norm as both data dimension p and sample size n are allowed to grow. The empirical results that show the utility of the proposed methods are also provided.

关键词： Differential privacy graphical model ADMM algorithm

Synthesis and Crystal Structure of a Mononuclear Zn(II) Complex with Tridentate Schiff Base,Zn(C_(12)H_(18)N_2O)(NCS)_2

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Chinese Journal of Structural Chemistry 2006年第9期25卷 1031-1034页

作者： CAI wen-Xuan wen Yi-Hang su Hong FENG Yun-Long Institute of Physical Chemistry Zhejiang Key Laboratory for Reactive Chemistry on Solid Surfaces Zhejiang Normal University Jinhua 321004 China

The title complex Zn（HL）（NCS）2 （C14H18N4OS2Zn, Mr = 387.81, HL = N-（3-dimethyl-aminopropyl）-salicylaldimine） has been synthesized by the reaction of ZnSO4·7H2O with the Schiff base N-（3-dimethylaminopropyl）-salicylaldimine derived from the condensation reaction of 3-dimethylamino- 1-propylamine with salicyladehyde. It crystallizes in the monoclinic system, space group P21/n with a = 9.8360（8）, b = 14.930（1）, c = 12.277（1） A, β= 101.455（2）°, V= 1767.0（3） A 3, Z = 4, F（000） = 800, Dc= 1.458 g/cm^3 and ,μ（MoKα） = 1.631 mm^-1. The structure was refined to R = 0.0463 and wR = 0.1065 for 2681 observed reflections （1 〉 2σ（I））. Crystal analyses revealed that the Zn（Ⅱ） atom is coordinated by two nitrogen atoms of two NCS^-, and an oxygen atom as well as a nitrogen atom of amine from the neutral Schiff base ligand of N-（3-dimethyl-aminopropyl）-salicylaldimine to give a distorted tetrahedral geometry.

关键词： 3-dimethylamino-1-propylamine salieylaldehyde Sehiff base,

Tectonic Boundary and Ceasing Time of Amalgamation between the North China Craton and the North Qinling Belt

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Journal of Earth Science 2018年第5期29卷 1074-1080页

作者： Jingbo Liu Neng-Song Chen wen su State Key Laboratory of Lithospheric Evolution Institute of Geology and Geophysics Chinese Academy of Sciences College of Earth and Planetary Sciences University of the Chinese Academy of Sciences School of Earth Sciences Center for Global Tectonics China University of GeosciencesWuhan

The Qinling orogenic belt is a composite orogen, consisting of the north and south Qinling belts with different collision ages. The North Qinling belt is composed of several petro-tectonic units, including the Kuanping, Erlangping, Qinling and Danfeng groups with numerous granitoid plutons from Neoproterzoic to Middle Devonian. To the north of the Kuanping Group, a mylonitized granite body in the Luanchuan Group was determined to have the magmatic age of 850 Ma, which is the northernmost Neoprotozoic granite body. The volcanic rocks of the Dahongkou Formation from the Luanchuan Group had the eruptive age of -1 600 Ma, obtained from zircon U-Pb LA-ICP-MS analysis. The detrital zircons in meta-sandstones from the Taowan Group have three populations of-920-1 400, -1 600-2 100, and 〉2 200 Ma ages, whereas those from the Kuanping Group shows six populations with the peaks of -590, -767, -952, -1 590, -2 485, and -3 200 Ma. These data suggest that the boundary between the North China Craton and the North Qinling belt cannot simply be constrained by using the events determined from zircon U-Pb ages. The granitoid plutons with the magmatic age of 430 Ma were strongly deformed, while those with the magmatic age of -390 Ma show no or less deformation, indicating that the deformation of amalgamation between the North China Craton and the North Qinling belt ceased between 390 and 430 Ma.

关键词： Qinling orogenic belt Taowan Group Kuanping Group granitoid zircon age.

Reconstruction of Smoke Plume Concentration Peaks Based on Modified MAX-DOAS Tomography

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Chinese Journal of Chemical Physics 2015年第6期28卷 -页

作者： Min-hong Wei Min-ming Tong su-wen Li School of Physics and Electronic Information Huaibei Normal University Huaibei 235000 ChinaSchool of Information and Electrical Engineering China University of Mining and Technology Xuzhou 221116 China School of Information and Electrical Engineering China University of Mining and Technology Xuzhou 221116 China School of Physics and Electronic Information Huaibei Normal University Huaibei 235000 China

Optical tomography system based on modified simultaneous iterative reconstruction technique is designed to real-time monitor spatial distribution and diffusion process of smoke plume in a power plant. Concentration profiles, rather than just a point value, of smoke plume concentrations are the goal of this method, and the tomography algorithm is analyzed. According to incomplete projection data in the process of reconstruction and exiting noise interference, the modified simultaneous iterative reconstruction technique (SIRT) is adopted to extract the information of the trace gas concentration by a fan beam scanning and is compared to the conventional SIRT. Three evaluation indexes show that the reconstruction effect is the best by choosing proper relaxation factor, which reduces the index d to 0.044 from 0.435 and reduces the index r to 0.044 from 0.376 for 5500 iterations. Hence, the modified algorithm performs better in estimating the shape of the plume, this method is used to process the measured spectra in field campaign, the reconstruction results and the measured data are basically consistent, which is further confirmed by the experimental results.

关键词： Reconstruction DOAS tomography Retrieval Modified simultaneous iterative reconstruction technique