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Synthesis, Characterization and Antitumor Activities of Co, Ni, Cu, Zn Complexes with 1,4,7,10-tetrakis(4-nitrobenzyl)-1,4,7,10 tetraazacyclododecane Macrocyclic Ligand

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Chinese Journal of Structural Chemistry 2000年第1期19卷 39-47页

作者： KONG De\|yuan a* \ xie yu\|Li a\ xie yu\|yuan a\ HUANG Xiao\|Ying ba (Shanghai Institute of Materia Medica, the Chinese Academy of Sciences, Taiyuan Road 294, Shanghai, 200031, P. R. China) b (Department of Chemistry, Rugters University, New Jer 中科院上海药物所上海 2 0 0 0 31 Rugters University 美国 New Jersey 08102

New tetraazamacrocyclic ligand with 1,4,7,10 tetrakis(4 nitrobenzyl) pendent groups (C 36 H 40 N 8O 8, M r =712.76) crystallized in the monoclinic system, P2 1/n space group with unit cell parameters: a=7.834(2), b=22.902(6), c=10\^147(3), β=106.53(2)°, V=1745(1) 3, Z=2, D c =1.356 g/cm 3, λ (Mo Kα )=0.71069; μ =0.92cm -1 , F(000)=752, T =296K. The final R and R w values are 0\^065 and 0.066, respectively. The Cu(Ⅱ), Ni(Ⅱ), Co(Ⅱ), Zn(Ⅱ) complexes with this new ligand have been synthesized and characterized by elemental analyses, IR, UV, ESI MS and molar conductance. The macrocyclic ligand molecular structure is centrosymmetrical. All complexes are in accordance with the general formula: M(L)(NO 3) 2·nH 2O (M=Co, Ni, Cu, n=2; M=Zn, n=4; L=C 36 H 40 \|N 8O 8). The central metal ions coordinate to four nitrogen atoms of azamacrocycle and two oxygen atoms of one nitrate ion. Preliminary pharmacological tests against P 388 and A 549 tumor cell lines showed that all these complexes had considerable activities in vitro.

关键词： synthesis macrocyclic ligand antitumor activity crystal structure

Synthesis and Crystal Structure ofTrichlorotetrakis(tetrahydrofuran) Europium

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Chinese Journal of Structural Chemistry 1998年第1期17卷 61-64页

作者： KONG De-yuan WANG Shao-Wu ZHU Qin xie yu-yuan HUANG Xiao-Ying(Shanghai Institute of Materia Medica, the Chinese Academy of Sciences,Taiyuan road 294,Shanghai, 200031 ChinaDepartment of Chemistry, HongKong Chinese University, Shatin, HongkongState Key L 中科院上海药物所上海香港中文大学化学系香港中科院福建物质结构所结构化学国家重点实验室福建福州

Crystal of EuCl3(C4H8O4). was obtained from the reaction of C9H7Naand EuCl3,(0. 8: 1 mole ratio) in THF. It was crystallized in Fdd2 space group withunit cell parameters a=29. 161 (4), b=16. 558(6), c=9. 479 (3) A, V=4577 (4)A3, Z=8, Dc= 1.59 g/cm3, Mr=546. 75. F(000)=2192, A(Mo Ka) =0. 71069, u=31. 12 cm-1, T=293K. The final R and Rw values are 0. 040 and 0. 051 respective-ly. Three chlorine atoms and four oxygen atoms from THF are coordinated with cen-tral europium ion to form a pentagonal bipyramid polyhedron with coordination number7, the average Eu-Cl; bond length is 2. 637 A and Eu-O 2. 460A.

关键词： europium crystal structure synthesis

Literature overview of basic characteristics and flotation laws of flocs

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International Journal of Minerals,Metallurgy and Materials 2024年第5期31卷 943-958页

作者： Wanzhong Yin yu xie Zhanglei Zhu School of Resources and Civil Engineering Northeastern UniversityShenyang 110819China College of Chemistry and Chemical Engineering Xi’an University of Science and TechnologyXi’an 710054China

Flocculation flotation is the most efficient method for recovering fine-grained minerals,and its essence lies in flotation and recovery of *** physical characteristics of flocs are mainly determined by their apparent particle size and structure(density and morphology).Substantial researches have been conducted regarding the effect of floc characteristics on particle settling and water ***,the influence of floc characteristics on flotation has not been widely *** on the floc formation and flocculation flotation,this study reviews the fundamental physical characteristics of flocs from the perspectives of floc particle size and structure,summarizing the interaction between floc particle size and ***,it thoroughly discusses the effect of floc particle size and structure on floc floatability,further revealing the influence of floc characteristics on bubble collision and adhesion and elucidating the mechanisms of interaction between flocs and ***,it is observed that floc particle size is not the only factor influencing flocculation *** the appropriate apparent particle size range,flocs with a compact structure exhibit higher efficiency in bubble collision and adhesion during flotation,thereby resulting in enhanced flotation *** study aims to provide a reference for flocculation flotation,targeting the development of more efficient and refined flocculation flotation processes in the future.

关键词： flocs basic characteristics particle size and structure flotation laws bubbles

Method for Detecting Industrial Defects in Intelligent Manufacturing Using Deep Learning

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Computers, Materials & Continua 2024年第1期78卷 1329-1343页

作者： Bowen yu Chunli xie College of Mechanical and Electrical Engineering Northeast Forestry UniversityHarbin150040China

With the advent of Industry 4.0,marked by a surge in intelligent manufacturing,advanced sensors embedded in smart factories now enable extensive data collection on equipment *** analysis of such data is pivotal for ensuring production safety,a critical factor in monitoring the health status of manufacturing *** defect detection techniques,typically limited to specific scenarios,often require manual feature extraction,leading to inefficiencies and limited versatility in the overall *** research presents an intelligent defect detection methodology that leverages deep learning techniques to automate feature extraction and defect localization *** proposed approach encompasses a suite of components:the high-level feature learning block(HLFLB),the multi-scale feature learning block(MSFLB),and a dynamic adaptive fusion block(DAFB),working in tandem to extract meticulously and synergistically aggregate defect-related characteristics across various scales and hierarchical *** have conducted validation of the proposed method using datasets derived from gearbox and bearing *** empirical outcomes underscore the superior defect detection capability of our *** demonstrates consistently high performance across diverse datasets and possesses the accuracy required to categorize defects,taking into account their specific locations and the extent of damage,proving the method’s effectiveness and reliability in identifying defects in industrial components.

关键词： Industrial defect detection deep learning intelligent manufacturing

Octopus-like DNA nanostructure coupled with graphene oxide enhanced fluorescence anisotropy for hepatitis B virus DNA detection

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Chinese Chemical Letters 2024年第6期35卷 531-535页

作者： Jia-Li xie Tian-Jin xie yu-Jie Luo Kai Mao Cheng-Zhi Huang yuan-Fang Li Shu-Jun Zhen Key Laboratory of Luminescence Analysis and Molecular Sensing(Southwest University) Ministry of EducationCollege of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China Key Laboratory of Luminescent and Real-Time Analytical Chemistry(Southwest University) Chongqing Science and Technology BureauCollege of Pharmaceutical SciencesSouthwest UniversityChongqing 400715China

Fluorescence Anisotropy(FA)is an effective biochemical detection method based on molecular *** oxide(GO)has been extensively used as an FA ***,the enhancement of FA by GO alone is limited and the strong scattering of GO will easily make the measurement of FA *** order to address these problems,an octopus-like DNA nanostructure(ODN)was designed and coupled with GO to enhance the FA together in this *** mimicking the multi-clawed structure of the octopus,the ODN can be adsorbed on GO tightly,which not only could improve the sensitivity because of the double FA enhancement abilities of GO and ODN,but also could improve the specificity due to the decrease of the nonspecific interaction in complex ***,ODN could maintain a certain distance between the fluorophore and GO to reduce the fluorescence quenching efficiency of GO,which could improve the *** method has been applied for the detection of hepatitis B virus DNA(HBV-DNA)in a range of 1-50 nmol/L and the limit of detection(LOD)was 330 pmol/*** addition,the proposed method has been successfully utilized to detect HBV-DNA in human serum,indicating that this method has a great practical application prospect.

关键词： Fluorescence anisotropy Graphene oxide(GO) Octopus-like DNA nanostructure HBV-DNA

Research Progress in the Fabrication of Covalent Organic Framework Membranes for Chemical Separations

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Chinese Journal of Polymer Science 2024年第2期42卷 141-158,I0005页

作者： Cui-Ting Ding Jin-Qiu yuan Meng-Ying xie Qing-yuan Liu Zeng-Guang Yao Shi-yu Zhang Run-Nan Zhang Hong Wu Zhong-Yi Jiang Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and TechnologyTianjin UniversityTianjin300072China Zhejiang Institute of Tianjin University NingboZhejiang315201China Haihe Laboratory of Sustainable Chemical Transformations Tianjin300192China Tianjin Key Laboratory of Membrane Science and Desalination Technology Tianjin UniversityTianjin300072China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityBinhai New CityFuzhou350207China

Membrane technology has become one of the most promising separation technologies for its energy saving, high separation efficiency, environmental friendliness, and economic feasibility. Covalent organic frameworks(COFs) with intrinsically high porosity, controllable pore size, uniform pore size distribution and long-range ordered channel structure, have emerged as next-generation materials to fabricate advanced separation membranes. This feature article summarizes some latest studies in the development of pure COF membranes in our lab, including their fabrication and applications in chemical separations. Finally, current challenges facing high-performance COF separation membranes are discussed.

关键词： Covalent organic frameworks Covalent organic framework membranes Water treatment Organic solvent nanofiltration Gas separation

High-Performance All-Printed Flexible Micro-Supercapacitors with Hierarchical Encapsulation

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Energy & Environmental Materials 2024年第4期7卷 262-268页

作者： yuhang yuan Wei yuan Yaopeng Wu Xuyang Wu Xiaoqing Zhang Simin Jiang Bote Zhao yu Chen Chenghao Yang Liangxin Ding Zhenghua Tang Yingxi xie Yong Tang School of Mechanical & Automotive Engineering South China University of Technology School of Environment and Energy South China University of Technology School of Chemistry and Chemical Engineering South China University of Technology

Printed micro-supercapacitors (MSCs) have shown broad prospect in flexible and wearable *** of previous studies focused on printing the electrochemically active materials paying less attention to other key components like current collectors and *** study presents an allprinting strategy to fabricate in-plane flexible and substrate-free MSCs with hierarchical encapsulation.

关键词： all-printing flexible hierarchical encapsulation micro-supercapacitors substrate-free

Trial application of the envelope method to the potential ambiguity problem

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Nuclear Science and Techniques 2024年第1期35卷 73-80页

作者： Li-yuan Hu yu-Shou Song Fundamental Science on Nuclear Safety and Simulation Technology Laboratory Harbin Engineering UniversityHarbin 150001China College of Nuclear Science and Technology Harbin Engineering UniversityHarbin 150001China Key Laboratory of Nuclear Safety and Advanced Nuclear Energy Technology Ministry of Industry and Information TechnologyHarbin 150001China

The optical potential ambiguity is a long-standing problem in the analysis of elastic scattering *** a specific collid-ing system,ambiguous potential families can lead to different behaviors in the nearside and farside scattering *** contrast,the envelope method can decompose the experimental data into two components with negative and positive deflection angles,***,a question arises as to whether the comparison between the calculated nearside(or farside)component and the derived positive-deflection-angle(or negative-deflection-angle)component can help analyze the potential ambiguity *** this study,we conducted a trial application of the envelope method to the potential ambiguity *** envelope method was improved by including uncertainties in the experimental *** colliding systems of 16O+28Si at 215.2 MeV and 12C+12C at 1016 MeV were considered in the *** each colliding system,the angular distribution experimental data were described nearly equally well by two potential sets,one of which is“surface transpar-ent”and the other is *** calculated angular distributions were decomposed into nearside and farside scattering *** the improved envelope method,the experimental data were decomposed into the positive-deflection-angle and negative-deflection-angle components,which were then compared with the calculated nearside and farside *** capability of the envelope method to analyze the potential ambiguities was also discussed.

关键词： Elastic scattering Optical potential ambiguities Envelope method Nearside/farside decomposition

Bioactive chemical constituents from the marine-derived fungus Cladosporium ***-5

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Journal of Oceanology and Limnology 2024年第3期42卷 905-914页

作者： Luting DAI Qingyi xie Jiaocen GUO Qingyun MA Li YANG Jingzhe yuan Haofu DAI Zhifang yu Youxing ZHAO College of Food Science and Technology Nanjing Agricultural UniversityNanjing 210095China Key Laboratory of Research and Development of Natural Product from Li Folk Medicine of Hainan Province Institute of Tropical Bioscience and BiotechnologyChinese Academy of Tropical Agricultural Sciences&Hainan Academy of Tropical Agricultural ResourceHaikou 571101China

A new isochromanone,cladosporinisochromanone(1),accompanied by 15 known compounds(2–16)were obtained from secondary metabolites produced by marine-derived fungus Cladosporium *** and HRESIMS spectra elucidation determined the planar structure of *** electronic circular dichroism(ECD)experiment assigned the absolute configuration of *** 1,2,4–6,and 10 displayed different degrees of neuroprotective activities on human neuroblastoma cells *** compounds(1,3–5,and 13)emerged resistance to protein tyrosine phosphatase 1B(PTP1B),further kinetic analysis and molecular docking study indicated that the most potent compound 13(IC50value of 10.74±0.61μmol/L)was found as a noncompetitive inhibitor for *** plasmon resonance(SPR)and molecular docking studies also demonstrated the interaction between compound 12 and Niemann-Pick C1 Like 1(NPC1L1),which has been identified as significant therapeutic target for *** addition,compounds 3,6,and 14 showed attractive inhibitory activity against the phytopathogenic fungi:Colletotrichum ***,library of Cladosporium metabolites is enriched and new active uses of known compounds are explored.

关键词： Cladosporium sp. marine-derived fungus neuroprotective effects protein tyrosine phosphatase 1B(PTP1B) Niemann-Pick C1 Like 1(NPC1L1) antifungal activity