检索结果-南通市图书馆

Chinese Chemical Letters 2025年第1期36卷 338-343页

作者： Jinqiang Gao Haifeng Yuan Xinjuan Du Feng Dong Yu Zhou Shengnan Na Yanpeng Chen Mingyu Hu Mei Hong Shihe Yang guangdong provincial key laboratory of nano-micro materials research School of Advanced MaterialsPeking University Shenzhen Graduate School(PKUSZ)Shenzhen 518055China School of Chemical Engineering and Technology Xi’an Jiaotong UniversityXi’an 710049China Department of Physics Hong Kong Baptist UniversityHong Kong 999077China

Rational design of viable routes to obtain efficient and stable oxygen evolution reaction(OER)electrocatalysts remains challenging,especially under industrial ***,we provide a solvent-steam assisted corrosion engineering strategy to directly fabricate high-entropy NiF e-LDH with spatially resolved structural *** fluoride in methanol steam enables the formation of nanosheets while Fe^(3+)effectively enhances their adhesion to the semi-sacrificial nickel-iron foam(NFF),thereby conjuring up a Ni Fe-LDH@NFF catalyst that exhibits remarkable adaptability to robust electrochemical activation yet with excellent *** measurements reveal the in-situ formation of high-valance metal oxyhydroxide and the enhancement of adsorption-desorption *** the industrial condition(6 mol/L KOH,60℃),the Ni Fe-LDH@NFF exhibits excellent activity of 50 mA/cm^(2) at 1.55 V and high durability of over 120 h at 200 mA/cm^(2).We anticipate that the steam assisted strategy could promote the development of efficient non-precious electrocatalysts for hydrogen energy.

关键词： High-entropy material Corrosion engineering NiFe-LDH Oxygen evolution reaction Stability

Facile construction of heterogeneous dual-ionic poly(ionic liquid)s for efficient and mild conversion of CO_(2)into cyclic carbonates

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Environmental Sciences 2025年第3期149卷 177-187页

作者： Guanqun Xie Jiaxiang Qiu Huadeng Li Hongbin Luo Shuo Li Yanbin Zeng Ke Zheng Xiaoxia Wang School of Environment and Civil Engineering Dongguan University of TechnologyDongguan 523808China School of materials Science and Engineering Guangdong Provincial Engineering Technology Research Center of Key Material for High Performance Copper Clad LaminateDongguan University of TechnologyDongguan 523808China

In the context of peaking carbon dioxide emissions and carbon neutrality,development of feasible methods for converting CO_(2)into high value-added chemicals stands out as a hot *** this study,P[D+COO^(−)][Br^(−)][DBUH^(+)],a series of novel heterogeneous dual-ionic poly(ionic liquid)s(PILs)were synthesized readily from 2-(dimethylamino)ethyl methacrylate(DMAEMA),bromo-substituted aliphatic acids,organic bases and divinylbenzene(DVB).The structures,compositions and morphologies were characterized or determined by nuclear magnetic resonance(NMR),thermal gravimetric analysis(TGA),infrared spectroscopy(IR),scanning electron microscopes(SEM),and Brunauer-Emmett-Teller analysis(BET),*** of the P[D+COO^(−)][Br^(−)][DBUH^(+)]series as catalysts in converting CO_(2)into cyclic carbonates showed that P[D+COO^(−)][Br^(−)][DBUH^(+)]-2/1/0.6was able to catalyze epiclorohydrin-CO_(2)cycloaddition the most *** afforded chloropropylene carbonate(CPC)in 98.4%yield with≥99%selectivity in 24 hr under solvent-and additive-free conditions at atmospheric *** experiments showed that recycling of the catalyst 6 times only resulted in a slight decline in the catalytic *** addition,it could be used for the synthesis of a variety of differently substituted cyclic carbonates in good to excellent ***,key catalytic active sites were probed,and a reasonable mechanism was proposed *** summary,this work poses an efficient strategy for heterogenization of dual-ionic PILs and provides amild and environmentally benign approach to the fixation and utilization of carbon dioxide.

关键词： Dual-ionic poly(ionic liquid)s CO_(2)cycloaddition Epoxides Cyclic carbonates Heterogeneous catalysts

Local-contrastive-learning machine with both generalization and adversarial robustness:A statistical physics analysis

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第1期68卷 105-119页

作者： Mingshan Xie Yuchen Wang Haiping Huang PMI lab School of PhysicsSun Yat-sen UniversityGuangzhou 510275China guangdong provincial key laboratory of Magnetoelectric Physics and Devices Sun Yat-sen UniversityGuangzhou 510275China

Distinct from human cognitive processing,deep neural networks trained by backpropagation can be easily fooled by adversarial *** design a semantically meaningful representation learning,we discard backpropagation,and instead,propose a local contrastive learning,where the representations for the inputs bearing the same label shrink(akin to boson)in hidden layers,while those of different labels repel(akin to fermion).This layer-wise learning is local in nature,being biologically plausible.A statistical mechanics analysis shows that the target fermion-pair-distance is a key ***,the application of this local contrastive learning to MNIST benchmark dataset demonstrates that the adversarial vulnerability of standard perceptron can be greatly mitigated by tuning the target distance,i.e.,controlling the geometric separation of prototype manifolds.

关键词： machine learning statistical mechanics adversarial robustness neural networks

Metal-organic polyhedra as dynamic cross-linker for recyclable mixed matrix membranes with promising dimension stability

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第2期68卷 705-713页

作者： Linjie Lan Mingxin Zhang Haiyan Xiao Wei Liu-Fu Yuyan Lai Jiadong Chen Jia-Fu Yin Panchao Yin State key laboratory of Luminescent materials and Devices&South China Advanced Institute for Soft Matter Science and Technology Guangdong Basic Research Center of Excellence for Energy and Information Polymer MaterialsSouth China University of TechnologyGuangzhou 510641China State key laboratory of Marine Resource Utilization in South China Sea Hainan Provincial Key Lab of Fine ChemistrySchool of Chemical Engineering and TechnologyHainan UniversityHaikou 570228China

Mixed matrix membranes(MMMs)are designed by incorporating microporous inorganic fillers into polymer matrix for the integration of inorganics’excellent gas separation performance with polymers’promising ***,due to the complex interphase interaction,the prevention of long-term aging is still challenging and the poor processability/recyclability of MMMs hinders their extensive ***,a coordination assembly protocol is developed for the fabrication of MMMs with both excellent processability/recyclability upon thermal annealing and promising dimension stability even under high gas *** bearing isophthalic acid(IPA)as side chains are applied to coordinate with Cu^(2+)and the assembled 2.5 nm microporous metal-organic polyhedra(MOP),{Cu_(24)IPA_(24)},serves as multi-functional cross-linkers for the polymer network *** MOPs’well-defined microporosity grants MMMs the capability for O_(2)/N_(2) separation while their activated dynamics at high temperatures(>120℃)endows polymer networks with excellent *** contrast to conventional supramolecular units,the MOPs possess unique logarithmic ligand-exchange kinetics and they show nearly frozen bonding dynamics at room temperature,ensuring promising dimensional stability to overcome the long-term aging and high gas pressure *** work not only provides fundamental understanding of the unique relaxation dynamics of complex systems with intertwined dynamics of supramolecular bonds and polymer chains,but also paves new avenues for the fabrication of robust and recyclable MMMs and elastomers.

关键词： dynamic bonding metal-organic polyhedra mixed matrix membrane polymer recycling gas separation

Ligand Engineering Achieves Suppression of Temperature Quenching in Pure Green Perovskite nanocrystals for Efficient and Thermostable Electroluminescence

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

nano-micro Letters 2025年第4期17卷 25-38页

作者： Kaiwang Chen Qing Du Qiufen Cao Chao Du Shangwei Feng Yutong Pan Yue Liang Lei Wang Jiangshan Chen Dongge Ma Institute of Polymer Optoelectronic materials and Devices Guangdong Basic Research Center of Excellence for Energy&Information Polymer MaterialsState Key Laboratory of Luminescent Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence From Molecular AggregatesSouth China University of TechnologyGuangzhou 510640People’s Republic of China Wuhan National laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China

Formamidinium lead bromide(FAPbBr_(3))perovskite nanocrystals(NCs)are promising for display and lighting due to their ultra-pure green ***,the thermal quenching will exacerbate their performance degradation in practical applications,which is a common issue for halide ***,we reported the heat-resistant FAPbBr_(3)NCs prepared by a ligand-engineered room-temperature synthesis *** aromatic amine,specificallyβ-phenylethylamine(PEA)or 3-fluorophenylethylamine(3-F-PEA),was incoporated as the short-chain ligand to expedite the crystallization rate and control the size distribution of FAPbBr_(3)*** this ligand engineering approach,we synthesized high quality FAPbBr_(3)NCs with uniform grain size and reduced long-chain alkyl ligands,resulting in substantially suppressed thermal quenching and enhanced carrier transportation in the perovskite NCs *** notably,more than 90%of the room temperature PL intensity in the 3-F-PEA modified FAPbBr_(3)NCs film was preserved at 380 ***,we fabricated ultra-pure green EL devices with a room temperature external quantum efficiency(EQE)as high as 21.9%at the luminance of above 1,000 cd m^(-2),and demonstrated less than 10%loss in EQE at 343 *** study introduces a novel room temperature method to synthesize efficient FAPbBr_(3)NCs with exceptional thermal stability,paving the way for advanced optoelectronic device applications.

关键词： Perovskite nanocrystals Ligands engineering Thermal quenching Ultra-pure green emission Light-emitting diodes

Study on the diagnostic criteria of syndrome of dampness obstruction in idiopathic membranous nephropathy based on expert consensus

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2025年第1期45卷 167-175页

作者： WANG Dan HUANG Xiaoyan LI Ping HONG Xiaofan ZHANG Yumin WANG Rongrong BAO Kun LIANG Xing Nephrology Department Qianxinan Autonomous Prefecture Hospital of Traditional Chinese Medicine Nephrology Department Guangdong Provincial Hospital of Chinese Medicine guangdong provincial key laboratory of Chinese Medicine for Prevention and Treatment of Refractory Chronic Disease the Second Affiliated Hospital of Guangzhou University of Chinese Medicine State key laboratory of Dampness Syndrome of Chinese Medicine the Second Affiliated Hospital of Guangzhou University of Chinese Medicine State key laboratory of Dampness Syndrome of Chinese Medicine The Second Affiliated Hospital of Guangzhou University of Chinese Medicine guangdong-Hong Kong-Macau Joint lab on Chinese Medicine and Immune Disease research

OBJECTIVE: To reach consensus on the diagnostic criteria of syndrome of dampness obstruction in idiopathic membranous nephropathy(IMN) patients by literature research and expert investigation(interviews and a Delphi method). METHODS: Our study was consistent with T/CACM 1336-2020. We searched the monographs and references published in the past 40 years(1983-2022), and established the diagnostic criteria pool of waterdampness syndrome and dampness-turbidity syndrome in Traditional Chinese Medicine(TCM) based on literature by using frequency statistics and correlation analysis. Expert investigation(interview method and two rounds of Delphi method) was used to form the diagnostic criteria of water-dampness syndrome and dampnessturbidity syndrome of idiopathic membranous nephropathy. Clinical diagnostic test research was carried out, and compared with “Diagnostic Criteria for dampness syndrome”(T/CACM 1454-2023) to evaluate the authenticity, reliability and clinical application value of the standard. RESULTS: A total of 122 relevant guides, standards, monographs and documents were included through searching books and Chinese databases. Four experts were interviewed and two rounds of delphi method(75 experts nationwide) were carried out. The experts' opinions are relatively concentrated and the differences are small. Based on the weight of each index, the diagnostic criteria indexes of water-dampness syndrome and dampness-turbidity syndrome were selected. After discussion by the core group members, the diagnostic model of "necessary symptoms and optional symptoms" was established, and the final diagnostic criteria of waterdampness syndrome and dampness-turbidity syndrome were established. One hundred and ninety-one inpatients and outpatients of guangdong provincial Hospital of Chinese Medicine from January 2021 to February 2023 were included in Diagnostic test study. There was no statistical difference in gender, age and course of disease(P > 0.05). The sensitivity and s

关键词： combination of disease and syndrome diagnostic tests, routine glomerulonephritis, membranous syndrome diagnostic criteria syndrome of dampness obstruction

Reconstructing fossil insect communities and palaeoclimates for the Middle Jurassic Yanliao Biota in the Daohugou area of China

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Science Bulletin 2025年第2期70卷 176-179页

作者： Liang Chen Lifang Xiao Shilong Guo Nan Yang Conrad C.labandeira Chungkun Shih Chaofan Shi Dong Ren College of Life Sciences Capital Normal UniversityBeijing 100048China guangdong key laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationInstitute of ZoologyGuangdong Academy of SciencesGuangzhou 510260China Department of Paleobiology National Museum of Natural HistorySmithsonian InstitutionWashingtonDC 20013USA Department of Entomology University of MarylandCollege ParkMD 20742USA School of Earth Sciences and Engineering Guangdong Provincial Key Lab of Geological Processes and Mineral ResourcesSun Yat-sen UniversityGuangzhou 510275China

Palaeoecological research is essential to understanding the interaction between organisms and their environment during the evolutionary ***,the study of fossil insect communities is challenging because of a limited fossil record and the unavailability of data,which makes it difficult to assess the associations of insects with their environment,especially the role of local climate.

关键词： Jurassic Middle process.

Modulation of the octahedral structure and potential superconductivity of La_(3)Ni_(2)O_(7)through strain engineering

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Science China(Physics,Mechanics & Astronomy) 2025年第3期68卷 145-152页

作者： Zihao Huo Zhihui Luo Peng Zhang Aiqin Yang Zhengtao Liu Xiangru Tao Zihan Zhang Shumin Guo Qiwen Jiang Wenxuan Chen Dao-Xin Yao Defang Duan Tian Cui key laboratory of material Simulation Methods&Software of Ministry of Education State Key Laboratory of Superhard MaterialsCollege of PhysicsJilin UniversityChangchun130012China Center for Neutron Science and Technology Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesState Key Laboratory of Optoelectronic Materials and TechnologiesSchool of PhysicsSun Yat-sen UniversityGuangzhou510275China MOE key laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic PhysicsSchool of PhysicsXi’an Jiaotong UniversityXi’an710049China Institute of High Pressure Physics School of Physical Science and TechnologyNingbo UniversityNingbo315211China

The recent transport measurements of La_(3)Ni_(2)O_(7)uncovered a“right-triangle”shape of the superconducting dome in the pressure-temperature(P-T)phase *** by this,we perform theoretical first-principles studies of La_(3)Ni_(2)O_(7)with the pressure ranging from 0 to 100 ***,we reveal a pressure dependence of the Ni-d_(z^(2))electron density at the Fermi energy(n_(z)^(E_(F)))that highly coincides with such *** this basis,we further explore the electronic structure under uniaxial *** tracking the stress response of n_(z)^(E_(F)),we propose that superconductivity can be achieved by applying only ~2GPa of compression along the c *** idea is further exemplified from the perspectives of lattice distortion,band structure,Fermi surface and superconducting phase *** also discuss the possible charge modulation under the stress and provide an insight into the relation between nz E Fand the superconducting T_(c)in La_(3)Ni_(2)O_(7)*** study provides new routes to the search of high-T_(c)superconductors in future experiments.

关键词： nickelate superconductors density functional theory strong correlated systems strain engineering

同方期刊数据库

Post-rifting magmatism at the northern margin of the South China Sea:Evidenced by an ocean bottom seismometer experiment

在线全文

学校读者我要写书评

暂无评论

Earthquake Science 2025年第1期38卷 1-16页

作者： Lu Zhang Chen Cai Rui Gao School of Earth Sciences and Engineering Sun Yat-sen UniversityGuangzhou 510275China School of Geophysics and Geomatics China University of GeosciencesWuhan 430074China Southern Marine Science and Engineering guangdong laboratory(Zhuhai) Zhuhai 519000China guangdong provincial key lab of Geodynamics and Geohazards Guangzhou 510275China guangdong Deep Earth Exploration and Geological Process Technology research Center Guangzhou 510275China key laboratory of Deep-Earth Dynamics of Ministry of Natural Resources Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China

Magmatism at continental margins is of great significance in understanding the continental *** present a twodimensional P-wave velocity model derived from an ocean bottom seismometer experiment,conducted across the middle northern continental margin of the South China Sea(SCS).The detailed velocity structures reveal significant heterogeneities extending from the continental shelf to the continent-ocean transition *** crust exhibits its greatest thickness below the continental shelf,measuring~23 km and gradually thins to~13 km at the distal ***,a narrow and distinct continent-ocean transition with only 40-km width is *** also observe a high-velocity layer within the transition zone,reaching thickness of up to 4 km,characterized by P-wave velocities ranging from 7.0 km/s to 7.6 km/s in the lower *** on the syn-rift melt generation using decompression melting model,we ascertain that syn-rift magmatism cannot fully account for the observed thick high-velocity *** integrating findings from previous geophysical and geochemical studies presenting extensive volcanic edifice on the seafloor at the northern margin,as well as ocean-island-basalt-type magmaticsamples in the SCS area,we propose that post-rifting magmatism associated with the Hainan Plume may have influenced theformation of the high-velocity lower crust within the transition zone and the northern margin of the SCS can thus be recognizedas magma-poor type margin.

关键词： South China Sea continental margin seismic refraction post-rift magmatism

Possible coexistence of superconductivity and topological electronic states in 1T-RhSeTe

在线全文

学校读者我要写书评

暂无评论

Chinese Physics B 2025年第2期34卷 111-116页

作者： Tengdong Zhang Rui Fan Yan Gao Yanling Wu Xiaodan Xu Dao-Xin Yao Jun Li Hebei key laboratory of microstructural material Physics School of ScienceYanshan UniversityQinhuangdao 066004China State key laboratory of Optoelectronic materials and Technologies Guangdong Provincial Key Laboratory of Magnetoelectric Physics and DevicesSchool of PhysicsSun Yat-Sen UniversityGuangzhou 510275China

Transition metal dichalcogenides(TMDs), exhibit a range of crystal structures and topological quantum states. The1T phase, in particular, shows promise for superconductivity driven by electron–phonon coupling(EPC), strain, pressure,and chemical doping. In this theoretical investigation, we explore 1T-Rh Se Te as a novel type of TMD superconductor with topological electronic states. The optimal doping structure and atomic arrangement of 1T-Rh Se Te are *** spectrum calculations validate the integrity of the constructed doping structure. The analysis of the electron–phonon coupling using the electron–phonon Wannier(EPW) method has confirmed the existence of a robust electron–phonon interaction in 1T-Rh Se Te, resulting in total EPC constant λ = 2.02, the logarithmic average frequency ω_(log)= 3.15 me V and T_c = 4.61 K, consistent with experimental measurements and indicative of its classification as a BCS *** band structure analysis revealed the presence of Dirac-like band crossing points. The topological non-trivial electronic structures of the 1T-Rh Se Te are confirmed via the evolution of Wannier charge centers(WCCs) and time-reversal symmetryprotected topological surface states(TSSs). These distinctive properties underscore 1T-Rh Se Te as a possible candidate for a topological superconductor, warranting further investigation into its potential implications and applications.

关键词： superconductivity topological electronic state transition metal dichalcogenides