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Chinese Journal of Polymer Science 2021年第8期39卷 975-983,I0005页

作者： Hui-xian Li Lei Hou pei-Yi Wu National Engineering Research Center for Dyeing and Finishing of Textiles College of ChemistryChemical Engineering and BiotechnologyDonghua UniversityShanghai 201620China

The time-resolved attenuated total reflectance-Fourier transform infrared(ATR-FTIR)spectroscopy is employed to investigate the transport mechanism of gel electrolytes by monitoring the diffusion behavior of propylene carbonate-lithium bis(trifluoromethylsulfonyl)imide(PC-LiTFSI)solution through poly(vinylidene fluoride-co-hexafluoropropylene)(P(VDF-HFP))*** behavior has been observed for both TFSr and *** temperature leads to faster diffusion of TFSI'and PC,which could be related to the increased free volume in P(VDF-HFP)matrix and rapid molecular movements upon *** molecular interactions among LiTFSI,PC and P(VDF-HFP)have been *** the diffusion process,PC molecules,in the form of small clusters,can firstly diffuse through the P(VDF-HFP)film and interact with P(VDF-HFP)by dipole-dipole interaction,acting as the ***,Li+diffuses into P(VDF-HFP)with the help of ion-dipole interactions between Li+and C=0 of ***,TFSI-diffuses through the polymer matrix in solvation *** addition,slight ion-dipole interactions between Li+and P(VDF-HFP)have been observed as *** in this work contribute to a better understanding of transport process in gel polymer electrolytes for lithium-ion batteries and support the development of improved gel polymer electrolytes by rationally regulating molecular interactions.

关键词： ATR-FTIR spectroscopy Gel polymer electrolyte Transport mechanism Molecular interaction Diffusion coefficient

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英雄文化融入新时代爱国主义教育的多维审视

黑龙江教师发展学院学报 2025年第1期44卷 30-35页

作者：彭先兵罗佩瑶广西师范大学马克思主义学院广西桂林541006

英雄文化是国家和民族的璀璨瑰宝,也是扎实推进新时代爱国主义教育必不可少的独特资源和鲜活载体。英雄文化与新时代爱国主义教育在文化渊源、价值追求、育人目标方面的内在诉求相契合。充分利用英雄文化,有助于丰富爱国主义教育内容,... 详细信息

英雄文化是国家和民族的璀璨瑰宝,也是扎实推进新时代爱国主义教育必不可少的独特资源和鲜活载体。英雄文化与新时代爱国主义教育在文化渊源、价值追求、育人目标方面的内在诉求相契合。充分利用英雄文化,有助于丰富爱国主义教育内容,深植民族情感之源;提升道德修养境界,巩固理想信念之基;坚定文化自信,筑牢兴国强国之魂。为了发挥英雄文化融入新时代爱国主义教育的积极作用,需要增强多元主体支撑,构建科学育人模式;丰富宣教方式,提升育人实效;善用法律利剑,筑牢法治屏障。

关键词：新时代英雄文化爱国主义教育优化路径

Emergence of higher-level neuron properties using a hierarchical statistical distribution model

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Science China(Technological Sciences) 2019年第4期62卷 628-634页

作者： xian Ning deng Yi Min DUAN HaiBin School of Automation Science and Electrical Engineering Beihang University

Essential to visual tasks such as object recognition is the formation of effective representations that generalize from specific instances of visual input. Neurons in primary visual cortex are typically hypothesized to efficiently encode image structures such as edge and textures from natural scenes. Here this paper proposed a novel hierarchical statistical distribution model to generalize higher-level neuron properties and encode distributed regularities that characterize local image regions. Two layers of our hierarchical model are presented to extract spiking activities of excitatory neurons decorrelated by inhibitory neurons and to construct the statistical patterns of input data, respectively. Trained on whitened natural images, parameters including neural connecting weights and distribution coding weights are estimated by their corresponding learning rules. To prove the feasibility and effectiveness of our model, several experiments on natural images are conducted. Adapting our model to natural scenes yields a distributed representation for higher-order statistical regularities. Comparison results provide insight into higher-level neurons which encode more abstract and invariant properties.

关键词： statistical distribution spiking activity object classification localization

Density fluctuations in intermediate-energy heavy-ion collisions

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Nuclear Science and Techniques 2022年第5期33卷 1-7页

作者： Cong Liu xian-Gai deng Yu-Gang Ma Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of Nuclear Physics and Ion-beam Application(MOE) Institute of Modern PhysicsFudan UniversityShanghai 200433China Shanghai Research Center for Theoretical Nuclear Physics NSFC and Fudan UniversityShanghai 200438China

Within the framework of the isospin-dependent quantum molecular dynamics model,we simulate^(129)Xe+^(119)Sn collisions in an incident energy range of 20 to 190MeV/nucleon and discuss the liquid-gas phase transition with density *** comparison,we also extract the effective Fisher parameter τ_(eff),multiplicity of intermediate-mass fragments(IMFs),and information *** is found that the Fisher parameter and maximum information entropy of collisions have peak values at E_(beam)=50-80 MeV/*** addition,the maximum multiplicity of IMFs has a plateau around 70 MeV/*** higher-order density moments in a larger central region of[-5,5]^(3) fm^(3) in the collision system,a maximum plateau also appears as function of beam energy at energies exceeding 70 MeV/*** observables,which are consistent with each other,indicate a liquid-gas phase transition around 70 MeV/nucleon for the^(129)Xe+^(119)Sn system.

关键词： Heavy-ioncollisions Liquid-gasphase transition IQMD Density moment Intermediatemass fragment Informationentropy Fisher-lawparameter

Continuous, homogeneous and rapid synthesis of 4-bromo-3-methylanisole in a modular microreaction system

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Chinese Journal of Chemical Engineering 2020年第8期28卷 2092-2098页

作者： pei Xie Kai Wang Jian deng Guangsheng Luo The State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing 100084China

4-Bromo-3-methylanisole is mainly used to synthesize black fluorane dye(2-anilino-3-methyl-6-dibutylaminofluorane, ODB-2), which is one of the most important heat and pressure-sensitive dyes in the manufacture of thermal papers. Compared to the industrial heterogeneous batch process, a continuous homogeneous bromination technology in a modular microreaction system has been developed, and 4-bromo-3-methylanisole has been successfully prepared through high-selective mono-bromination of 3-methylanisole with Br2 solution in CHCl3. In optimal conditions, the content of bis-brominated byproducts can be controlled less than 0.5%,which is superior to the industrial standard with 99.5% 3-methylanisole conversion at very short residence time and mild reaction temperature.

关键词： 4-bromo-3-methylanisole bromination continuous synthesis modular microreaction system mixing enhancement

Electromagnetic field effects on nucleon transverse momentum for heavy ion collisions around 100 A MeV

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Nuclear Science and Techniques 2017年第12期28卷 255-261页

作者： xian-Gai deng Yu-Gang Ma Shanghai Institute of Applied Physics Chinese Academy of SciencesShanghai 201800China University of Chinese Academy of Sciences Beijing 100049China ShanghaiTech University Shanghai 200031China

With taking electromagnetic field into account for the transport model of Boltzmann-Uehling-Uhlenbeck,electromagnetic effects are studied for ^(208)Pb +^(208)Pb collisions around 100A MeV. Electromagnetic field evolution during the collisions was estimated. It was found that the electric field has an obvious effect on the transverse momentum(p_T) spectra of nucleons during heavy ion collisions, and leads to different minimum position for the peak of p_T spectra of nucleons versus beam energy when the electric field is switched on. For the magnetic field, it affects the z-axis direction distributions of nucleons for central heavy ion collisions at lower energy.

关键词： Heavy ion collision Electromagnetic field Transverse momentum

Scattering of Water Waves by Dual Symmetric Inclined Floating Porous Barriers Using the DBEM

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China Ocean Engineering 2024年第1期38卷 156-168页

作者： WANG Li-xian deng Yan-wen YE Yang-sha deng Zheng-zhi Key Laboratory of High Performance Ship Technology(Wuhan University of Technology) Ministry of EducationWuhan 430063China School of Naval Architecture Ocean and Energy Power EngineeringWuhan University of TechnologyWuhan 430063China Key Laboratory of Water-Sediment Sciences and Water Disaster Prevention of Hunan Province Changsha 410114China Institute of Port Coastal and Offshore EngineeringZhejiang UniversityZhoushan 316021China

The scattering of normally incident water waves by two surface-piercing inclined perforated barriers in water with a uniform finite depth is investigated within the framework of linear water wave *** that thin barriers are zero-thickness,a novel numerical method involving the the coupling of the dual boundary element method(DBEM)with damping layers is *** order to effectively damp out the reflected waves,two damping layers,instead of pseudoboundaries are implemented near the two side boundaries of the computational ***,the modified linearized free surface boundary conditions are formulated and used for solving both the ordinary boundary integral equation as well as the hypersingular boundary integral equation for degenerate *** newly developed numerical method is validated against analytical methods using the matched eigenfunction expansion method for the special case of two vertical barriers or the inclined angle to the vertical being *** influence of the length of the two damping layers has been ***,these findings are also validated against previous results for several *** validation,the numerical results for the reflection coefficient,transmission coefficient and dissipation coefficient are obtained by varying the inclination angle and porosity-effect *** effects of both the inclination angle and the porosity on the amplitudes of wave forces acting on both the front and rear barriers are also *** is found that the effect of the inclination angle mainly shifts the location of the extremal values of the reflection and the transmission ***,a moderate value of the porosity-parameter is quite effective at dissipating wave energy and mitigating the wave loads on dual barriers.

关键词： dual boundary element method inclined perforated floating breakwater reflection coefficient transmission coefficient damping layer

Hydration process in Portland cement blended with activated coal gangue

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2011年第7期12卷 503-510页

作者： xian-ping LIU pei-ming WANG Min-ju DING Key Laboratory of Advanced Civil Engineering Materials (Tong/i University) Ministry of Education Shanghai 201804 China State Key Laboratory Breeding Base of Crime Scene Evidence Shanghai 200083 China

This paper deals with the hydration of a blend of Portland cement and activated coal gangue in order to determine the relationship between the degree of hydration and compressive strength *** hydration process was investigated by various means:isothermal calorimetry,thermal analysis,non-evaporable water measurement,and X-ray diffraction *** results show that the activated coal gangue is a pozzolanic material that contributes to the hydration of the cement *** pozzolanic reaction occurs over a period of between 7 and 90 d,consuming portlandite and forming both crystal hydrates and ill-crystallized calcium silicate *** hydrates are similar to those found in pure Portland *** results show that if activated coal gangue is substituted for cement at up to 30%(w/w),it does not significantly affect the final compressive strength of the blend.A long-term compressive strength improvement can in fact be achieved by using activated coal gangue as a sup-plementary cementing *** relationship between compressive strength and degree of hydration for both pure Portland cement and blended cement can be described with the same ***,the parameters are different since blended cement produces fewer calcium silicate hydrates than pure Portland cement at the same degree of hydration.

关键词： Activated coal gangue Portland cement Blended cement Hydration Strength

Antibacterial and pH-responsive Quaternized Hydroxypropyl Cellulose-g-Poly(THF-co-epichlorohydrin)Graft Copolymer:Synthesis,Characterization and Properties

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Chinese Journal of Polymer Science 2020年第7期38卷 704-714,I0005页

作者： Jin-Rui deng Cong-Lei Zhao Yi-xian Wu State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing Laboratory of Biomedical MaterialsBeijing University of Chemical TechnologyBeijing 100029China

The novel quaternized hydroxypropyl cellulose-g-poly(THF-co-epichlorohydrin)graft copolymers,HPC-g-QCP(THF-co-ECH),have been successfully synthesized to combine the properties from hydrophilic hard HPC biomacromolecular backbone and hydrophobic flexible polyether ***,the P(THF-co-ECH)living chains were synthesized by cationic ring-opening copolymerization of THF with ***,P(THF-co-ECH)living chains were grafted onto HPC backbone by reaction with-OH groups along HPC to produce HPC-g-P(THF-co-ECH)graft ***,the mentioned graft copolymers were quaternized by reaction with ternanyamine to generate functionalized HPC-g-QCP(THF-co-ECH).The HPC-g-QCP(THF-co-ECH)graft copolymers exhibited good antibacterial ability against *** or *** *** ibuprofen(IBU)-loaded microparticles of HPC-g-(QC)P(THF-co-ECH)graft copolymers were prepared by *** in vitro pH-responsive drug-release behavior of IBU reached up to 75%of drug-loaded at pH=*** quaternized graft copolymer was beneficial to solving the problems of a burst effect and fast release of HPC as drug carriers.

关键词： Living cationic ring-opening copolymerization Hydroxypropyl cellulose-graft-polyether Antibacterial ability pH-responsive drug-release

Magnetic resonance imaging-based artificial intelligence model in rectal cancer

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World Journal of Gastroenterology 2021年第18期27卷 2122-2130页

作者： pei-pei Wang Chao-Lin deng Bin Wu Department of General Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China

Rectal magnetic resonance imaging(MRI)is the preferred method for the diagnosis of rectal cancer as recommended by the *** MRI can accurately evaluate the tumor location,tumor stage,invasion depth,extramural vascular invasion,and circumferential resection *** summarize the progress of research on the use of artificial intelligence(AI)in rectal cancer in recent ***,represented by machine learning,is being increasingly used in the medical *** application of AI models based on high-resolution MRI in rectal cancer has been increasingly *** addition to staging the diagnosis and localizing radiotherapy,an increasing number of studies have reported that AI models based on high-resolution MRI can be used to predict the response to chemotherapy and prognosis of patients.

关键词： Artificial intelligence Deep learning Colorectal cancer Magnetic resonance imaging Radiomics