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Research progress on the luminescence of biomacromolecules

Journal of Materials Science & Technology 2021年第17期76卷 60-75页

作者： Dandan wang Junping Ju shuang wang Yeqiang Tan State Key Laboratory of Bio-Fibers and Eco-Textiles Collaborative Innovation Center of Marine Biobased Fiber and Ecological Textile TechnologyInstitute of Marine Biobased MaterialsCollege of Materials Science and EngineeringQingdao UniversityQingdao266071China

Luminescent materials show great potential in various *** aggregation-induced emission(AIE)luminogens are mostly produced by complex organic synthesis and have poor hydrophilicity and biocompatibility,which limit their practical ***,it is of great significance to develop fluorescent materials with good hydrophilicity and biocompatibility,and biomacromolecules with these properties have attracted our *** biomacromolecules can generate unique new fluorophores during the gelation process to obtain hydrogels with good fluorescence *** addition,biomacromolecules can be modified with fluorescent groups to obtain fluorescent materials with excellent performance,thus improving the hydrophilicity and biocompatibility of *** particular,grafting aggregation-caused quenching(ACQ)luminogens onto biomacromolecules can even effectively inhibit the aggregation and self-quenching of *** is well known that aromatic biological macromolecules such as green fluorescent protein have intrinsic *** fluorescence is also observed in nonaromatic biological macromolecules without traditional chromophores such as chitosan,cellulose and sodium *** luminescence of nonaromatic biomacromolecule can be rationalized by the clustering-triggered emission(CTE)mechanism,namely,clustering of nonconventional chromophores and subsequent electron overlap and conformation rigidification are accountable for the *** this review,fluorescence gels obtained from biomacromolecules,biomacromolecules modified with fluorophores,and the intrinsic luminescence of biomacromolecular luminogens are *** review will help to develop low-cost,biocompatible luminescent materials and has great significance for comprehending the luminescence of nonconventional luminophores and expanding the application of luminescent compounds.

关键词： Biomacromolecules Fluorescent gels Graft Intrinsic fluorescence Clustering-Triggered emission

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Effect of rare earth elements(La,Y,Pr)in multi-element composite perovskite oxide supports for ammonia synthesis

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Journal of Rare Earths 2021年第4期39卷 427-433页

作者： Wei Li shuang wang Jinping Li Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization College of Chemistry and Chemical EngineeringTaiyuan University of TechnologyTaiyuan 030024China College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China

A series of BaCe0_(3)modified with different rare earth elements(La,Y,Pr)were synthesized by coprecipitation and calcination and the effect of rare earth elements for catalytic ammonia synthesis under mild conditions was *** ammonia synthesis performance tests show that 2.5%Ru/BaCe_(0.9)La_(0.1)O_(3-δ)catalyst(All the percentages of Ru in this article are in mass fraction)exhibits the highest ammonia synthesis rate(34 mmol/(g·h))at 3 MPa,450℃,and no sign of deactivation after 100 h of reaction.H_(2)-TPR and XPS analyses indicate that the introduction of La increases the amount of oxygen vacancies of the catalyst,which is beneficial to increasing the electron density of Ru *** analysis shows that the Ru particle size is reduced greatly after La is introduced,which facilitates the catalyst generating more Bs-type sites(active sites of Ru species for N=N dissociation).CO_(2)-TPD analysis indicates that BaCe_(0.9)La_(0.1)O_(3-δ)has stronger basicity,which promotes electrons transfer from support to *** work provides an effective method for design and synthesis of Ru-based multi-element composite perovskite oxide catalysts.

关键词： Ammonia synthesis Ru-based catalyst Perovskite oxide Rare earth element(REE) Oxygen vacancies

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Grey Relational Analysis Coupled with Principal Component Analysis Method For Optimization Design of Novel Crash Box Structure

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Journal of Beijing Institute of Technology 2019年第3期28卷 577-584页

作者： shuang wang Dengfeng wang State Key Laboratory of Automotive Simulation and Control Jilin University

Crashworthiness and lightweight optimization design of the crash box are studied in this paper. For the initial model, a physical test was performed to verify the model. Then, a parametric model using mesh morphing technology is used to optimize and decrease the maximum collision force (MCF) and increase specific energy absorption (SEA) while ensure mass is not increased. Because MCF and SEA are two conflicting objectives, grey relational analysis (GRA) and principal component analysis (PCA) are employed for design optimization of the crash box. Furthermore, multi-objective analysis can convert to a single objective using the grey relational grade (GRG) simultaneously, hence, the proposed method can obtain the optimal combination of design parameters for the crash box. It can be concluded that the proposed method decreases the MCF and weight to 16.7% and 29.4% respectively, while increasing SEA to 16.4%. Meanwhile, the proposed method in comparison to the conventional NSGA-Ⅱ method, reduces the time cost by 103%. Hence, the proposed method can be properly applied to the optimization of the crash box.

关键词： crash box optimization maximum collision force (MCF) specific energy absorption (SEA) grey relational analysis (GRA) principal component analysis (PCA)

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Cosmological implications of different baryon acoustic oscillation data

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Science China(Physics,Mechanics & Astronomy) 2017年第4期60卷 10-22页

作者： shuang wang YaZhou Hu Miao Li School of Physics and Astronomy Sun Yat-Sen UniversityZhuhai 519082China Kavli Institute of Theoretical Physics China Chinese Academy of SciensesBeijing 100190China

In this work, we explore the cosmological implications of different baryon acoustic oscillation （BAO） data, including the BAO data extracted by using the spherically averaged one-dimensional galaxy clustering （GC） statistics （hereafter BAO 1） and the BAO data obtained by using the anisotropic two-dimensional GC statistics （hereafter BAO2）. To make a comparison, we also take into account the case without BAO data （hereafter NO BAO）. Firstly, making use of these BAO data, as well as the SNLS3 type la supernovae sample and the Planck distance priors data, we give the cosmological constraints of the ACDM, the wCDM, and the Chevallier-Polarski-Linder （CPL） model. Then, we discuss the impacts of different BAO data on cosmological consquences, including its effects on parameter space, equation of state （EoS）, figure of merit （FoM）, deceleration-acceleration transition redshift, Hubble parameter H（z）, deceleration parameter q（z）, statefinder hierarchy S3^（1）（z）, S4^（1）（z） and cosmic age t（z）. We find that：（1） NO BAO data always give a smallest fractional matter density Ωm0, a largest fractional curvature density Ωk0 and a largest Hubble constant h; in contrast, BAO1 data always give a largest Ωm0, a smallest Ωk0 and a smallest h. （2） For the wCDM and the CPL model, NO BAO data always give a largest EoS w; in contrast, BA02 data always give a smallest w. （3） Compared with the case of BAO1, BAO2 data always give a slightly larger FoM, and thus can give a cosmological constraint with a slightly better accuracy. （4） The impacts of different BAO data on the cosmic evolution and the comic age are very small, and cannot be distinguished by using various dark energy diagnoses and the cosmic age data.

关键词： cosmology dark energy observations cosmological parameters

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Genetic changes in refractory relapsed acute myeloid leukemia with NPM1 mutation:A case report

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World Journal of Clinical Cases 2022年第35期10卷 13058-13063页

作者： shuang-Ling wang Department of Hematology and Oncology The Second Affiliated Hospital of Medical College of Shantou UniversityShantou 515041Guangdong ProvinceChina

BACKGROUND Acute myeloid leukemia is often associated with gene mutation or chromosome abnormality,which is an important factor affecting *** 5-year survival rate of patients with acute myeloid leukemia without hematopoietic stem cell transplantation is *** patients who only received chemotherapy and whose first remission lasted>5 years,there are few reports of gene spectrum changes between relapse and initial *** SUMMARY We report a 41-year-old woman who presented to our hospital with complaints of dizziness,poor appetite and *** was diagnosed with acute myelomonocytic leukemia(M4b)with NPM1 mutation and only received *** first remission lasted>5 *** genetic variants were detected upon relapse that may have been related to relapse and chemotherapy *** Mutations in WT1(R394fs/A387fs)/PTPN11 T73I/ETV6 S350P and JAK2 W659R may be related to relapse and chemotherapy resistance in acute myeloid leukemia.

关键词： Acute myeloid leukemia NPM1 mutation Genetic variants WT1 Case report

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One-step synthesis of N,P co-doped porous carbon electrocatalyst for highly efficient nitrogen fixation

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Nano Research 2022年第3期15卷 1779-1785页

作者： Sijia Zhao Jin wang Peng wang shuang wang Jinping Li College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China

Heteroatom-doped porous carbon has attracted many researchers’interests owing to their hierarchical porous and more active sites for nitrogen reduction reaction(NRR).However,the development of simple synthesis strategies to fabricate efficient catalyst is still remaining a *** this work,a series of N,P co-doped porous carbon were prepared by one-step pyrolysis of zeolitic imidazolate framework(ZIF-8)and triphenylphosphine(TPP)under nitrogen *** obtained catalyst by calcinating ZIF-8 and TPP with the mass ratio of 1:5 for three hours was named as PN-C-ZIF-8,which exhibited a high yield rate of ammonia(43.39μg·h^(–1)·mg^(–1)cat.)and Faraday efficiency(16.67%)in 0.05 M H2SO4 at–0.3 *** importantly,the PN-C-ZIF-8 catalyst had superior selectivity that no hydrazine by-products were detected and long-term durability for 72 *** study provides an idea for the convenient design and preparation of heteroatom doped carbon materials.

关键词： N P co-doped carbon-based catalyst electrochemical ammonia synthesis metal organic framework pyrolysis

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Review of Design and Control Optimization of Axial Flux PMSM in Renewable-energy Applications

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Chinese Journal of Mechanical Engineering 2023年第2期36卷 29-49页

作者： Jianfei Zhao Xiaoying Liu shuang wang Lixiao Zheng School of Mechatronic Engineering and Automation Shanghai UniversityShanghai 200444China

Axial flux permanent magnet synchronous motors(AFPMSMs)have been widely used in wind-power generation,electric vehicles,aircraft,and other renewable-energy applications owing to their high power density,operating efficiency,and *** facilitate comprehensive research on AFPMSM,this article reviews the developments in the research on the design and control optimization of ***,the basic topologies of AFPMSMs are introduced and ***,the key points of the design optimization of core and coreless AFPMSMs are summarized from the aspects of parameter design,structure design,and material ***,because efficiency improvement is an issue that needs to be addressed when AFPMSMs are applied to electric or other vehicles,the development status of efficiency-optimization control strategies is ***,control strategies proposed to suppress torque ripple caused by the small inductance of disc coreless permanent magnet synchronous motors(DCPMSMs)are *** overview of the rotor-synchronization control strategies for disc contra-rotating permanent magnet synchronous motors(CRPMSMs)is ***,the current difficulties and development trends revealed in this review are discussed.

关键词： AFPMSM Design optimization Cogging torque Efficiency optimization Control strategy optimization

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Requirement-driven remote sensing metadata planning and online acquisition method for large-scale heterogeneous data

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Geo-Spatial Information Science 2022年第2期25卷 169-181页

作者： shuang wang Guoqing Li Wenyang Yu Yue Ma Aerospace Information Research Institute Chinese Academy of SciencesBeijingChina School of Electronic Electrical and Communication EngineeringUniversity of Chinese Academy of SciencesBeijingChina

Remote sensing data acquisition is one of the most essential processes in the field of Earth ***,traditional methods to acquire data do not satisfy the requirements of current applications because large-scale data processing is *** address this issue,this paper proposes a data acquisition framework that carries out remote sensing metadata planning and then realizes the online acquisition of large amounts of ***,this paper establishes a unified metadata cataloging model and realizes the catalog of metadata in a local ***,a coverage calculation model is presented,which can show users the data coverage information in a selected geographical region under the data requirements of a specific ***,according to the data retrieval results and the coverage calcula-tion,a machine-to-machine interface is provided to acquire target remote sensing *** were conducted to verify the availability and practicality of the proposed frame-work,and the results show the strengths and powerful capabilities of our framework by overcoming deficiencies in traditional *** also achieved the online automatic acquisi-tion of large-scale heterogeneous remote sensing data,which can provide guidance for remote sensing data acquisition strategies.

关键词： Online data acquisition remote sensing metadata planning metadata cataloging model coverage calculation machine-to-machine interface

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An effective strategy of constructing multi-metallic oxides of ZnO/ CoNiO_(2)/CoO/C microflowers for improved supercapacitive performance

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Chinese Journal of Chemical Engineering 2024年第3期67卷 1-8页

作者： Wei Guo Yan Zhang Xiaxin Lei shuang wang College of Physics Taiyuan University of TechnologyJinzhong 030600China College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization Taiyuan University of TechnologyTaiyuan 030024China

In this work,a new ZnO/CoNiO_(2)/CoO/C metal oxides composite is prepared by cost-effective hydrothermal method coupled with annealing process under N_(2) ***,the oxidation-defect annealing environment is conducive to both morphology and component of the composite,which flower-like ZnO/CoNiO_(2)/CoO/C is *** from good chemical stability of ZnO,high energy capacity of CoNiO_(2) and CoO and good conductivity of C,the as-prepared sample shows promising electrochemical behavior,including the specific capacity of 1435 C·g^(-1) at 1 A·g^(-1),capacity retention of 87.3%at 20 A·g^(-1),and cycling stability of 90.5%for 3000 cycles at 5 A·g^(-1),***,the prepared ZnO/CoNiO_(2)/CoO/C/NF//AC aqueous hybrid supercapacitors device delivers the best specific energy of 55.9 W·h·kg^(-1) at 850 W·kg^(-1).The results reflect that the as-prepared ZnO/CoNiO_(2)/CoO/C microflowers are considered as high performance electrode materials for supercapacitor,and the strategy mentioned in this paper is benefit to prepare mixed metal oxides composite for energy conversion and storage.

关键词： Composites Electrochemistry Hydrothermal Transition metal oxides Structural control Supercapacitors

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A taxonomic study on Endotricha Zeller （Lepidoptera： Pyralidae： Pyralinae） in China

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Insect Science 2005年第4期12卷 297-305页

作者： shuang-shuang wang HOU-HUN LI College of Life Sciences Nankai University Tianjin China

A checklist of 30 species ofEndotricha Zeller in China is presented in this paper. Six species （E. dumalis sp. nov., E. lunulata sp. nov. E. medogana sp. nov., E. nigra sp. nov., E. purpurata sp. nov. and E. simipunicea sp. nov.） are new to science and three （E. admirabilis Kirpichnikova, E. fuscobasalis Ragonot and E. valentis Kirpichnikova） are recorded for the first time in China. The adult features and genital structures of the new species are illustrated and a key to the Chinese species is given.

关键词： Lepidoptera Pyralidae Endotricha new species systematics

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