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Observation of high ionic conductivity of polyelectrolyte microgels in salt-free solutions

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Chinese Chemical Letters 2024年第4期35卷 255-259页

作者： Qiangwei wang Huijiao Liu mengjie wang Haojie Zhang Jianda Xie Xuanwei Hu Shiming Zhou Weitai Wu State Key Laboratory for Physical Chemistry of Solid Surfaces Collaborative Innovation Center of Chemistry for Energy MaterialsThe Key Laboratory for Chemical Biology of Fujian Provinceand Department of ChemistryCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China School of Materials Science and Engineering Xiamen University of TechnologyXiamen 361024China Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of ChinaHefei 230026China School of Chemistry and Chemical Engineering Ningxia UniversityYinchuan 750021China

Here, we report an observation that illustrate the potential of polyelectrolyte microgels in salt-free solutions to display a high ionic conductivity. Laser light scattering and ionic conductivity tests on very dilute aqueous dispersions of the microgels indicate that both small size and swollen state of gel particles play vital roles, which should favor the counterions to freely penetrate and leave gel particles, and thus can contribute to the ion-conducting property. Upon discovering this on microgels that are composed of imidazolium-based poly(ionic liquid), we also illustrate the generality of the finding to single lithium-ion polyelectrolyte microgels that are of more technically relevant features for applications, for instance, as injectable liquid “microgel-in-solution” electrolytes of high conductivity(ca. 8.2 × 10^(-2)S/m at 25.0 ℃ for1.0 × 10^(-2)g/m L of microgels in a LiNO_(3)-free 1:1 v/v mixture of 1,2-dioxolane and dimethoxymethane) and high lithium-ion transference number(0.87) for use in the rechargeable lithium-sulfur battery.

关键词： Polyelectrolhyte Stimuli-responsive Single-ion conducting Liquid electrolyte Lithium metal battery

中小企业参与职业教育产教融合的制约因素与推进策略——基于宁波中小企业问卷调查的分析

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宁波职业技术学院学报 2024年第3期28卷 41-46页

作者：王梦婕宁波幼儿师范高等专科学校浙江宁波315016

产教融合是职业教育高质量发展的关键所在,中小企业是参与职业教育产教融合的重要主体。在实践中因受到外部因素和内部因素的制约,参与产教融合的中小企业数量较少,积极性不高。中小企业参与产教融合的外部制约因素主要包括宏观层面的... 详细信息

产教融合是职业教育高质量发展的关键所在,中小企业是参与职业教育产教融合的重要主体。在实践中因受到外部因素和内部因素的制约,参与产教融合的中小企业数量较少,积极性不高。中小企业参与产教融合的外部制约因素主要包括宏观层面的经济环境因素、体制政策因素和舆论信息因素,内部制约因素主要包括人力资源、经营管理和风险承担。据此,促进中小企业参与职业教育产教融合应分类精准施策破除激励机制割裂,建立明确契约关系的风险利益共担机制,充分发挥行业协会作用促进校企精准对接以及形成强有力的合作支持体系。

关键词：产教融合职业教育中小企业制约因素

基于CFX摆线减速双螺杆的优化设计与流场分析

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饲料工业 2024年第14期45卷 11-16页

作者：王梦杰郭树国王丽艳刘祺沈阳化工大学机械与动力工程学院辽宁沈阳110142

针对传统双螺杆挤出机混合性能低下问题,研究设计了一种带有反螺纹元件的摆线减速新型双螺杆,旨在提高双螺杆挤出机流道内物料的混合性能。文章以流体力学为理论基础,运用MATLAB软件优化参数,选用SOLIDWORKS建立对应几何模型,运用ANSYS/... 详细信息

针对传统双螺杆挤出机混合性能低下问题,研究设计了一种带有反螺纹元件的摆线减速新型双螺杆,旨在提高双螺杆挤出机流道内物料的混合性能。文章以流体力学为理论基础,运用MATLAB软件优化参数,选用SOLIDWORKS建立对应几何模型,运用ANSYS/CFX模拟分析流道运动情况,以传统双螺杆挤出机为参照,进行宏观压力场、速度场、速度矢量以及螺杆截面速度流线图对比分析。分析结果显示,反螺纹元件能够使物料在流道内出现回流现象,摆线减速装置有效地降低了螺杆转速,致使物料在流道内被反复剪切,混合更加充分。研究结果表明:新型双螺杆提升物料20%左右的停留时间;变速段出现物料回流现象,此处物料发生反复剪切,混合性能提升;摆线针轮减速器的减速效果有效地延长了物料传输时间,提高了物料的混合性能。

关键词：双螺杆减速器反螺纹流场分析混合性能

流动儿童免疫规划管理在儿童疫苗接种中的应用效果分析

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中国社区医师 2024年第20期40卷 157-159页

作者：王孟杰滨州市疾病预防控制中心山东滨州256600

目的:分析流动儿童免疫规划管理在儿童疫苗接种中的应用效果。方法:选取2021年3月—2022年3月滨州市疾病预防控制中心登记的流动儿童1 000例作为研究对象,随机分为研究组和对照组,各500例。对照组实施常规管理,研究组在对照组基础上实... 详细信息

目的:分析流动儿童免疫规划管理在儿童疫苗接种中的应用效果。方法:选取2021年3月—2022年3月滨州市疾病预防控制中心登记的流动儿童1 000例作为研究对象,随机分为研究组和对照组,各500例。对照组实施常规管理,研究组在对照组基础上实施流动儿童免疫规划管理。比较两组家长疫苗接种知识掌握情况、儿童按时接种情况、接种依从性、接种满意度。结果:研究组家长疫苗接种知识总掌握率高于对照组,差异有统计学意义(P<0.001)。研究组按时接种率高于对照组,差异有统计学意义(P<0.001)。研究组接种依从性高于对照组,差异有统计学意义(P<0.001)。研究组家长接种总满意度高于对照组,差异有统计学意义(P<0.001)。结论:流动儿童免疫规划管理在儿童疫苗接种中的应用价值较高,能够提高家长疫苗接种知识掌握率、接种依从性及接种满意度。

关键词：疫苗接种流动儿童免疫规划管理

Test of a model coupling of electromagnetic and gravitational fields by using high-frequency gravitational waves

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Science China(Physics,Mechanics & Astronomy) 2021年第5期64卷 22-27页

作者： Yinhua Zou mengjie wang Jiliang Jing Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China

Models of the coupling of electromagnetic and gravitational fields have been studied extensively for many years. In this paper,we consider the coupling between the Maxwell field and the Weyl tensor of the gravitational field to study how the wavevector of the electromagnetic wave is affected by a plane gravitational wave. We find that the wavevector depends upon the frequency and direction of polarization of the electromagnetic waves, the parameter that couples the Maxwell field and the Weyl tensor, and the angle between the direction of propagation of the electromagnetic wave and the coordinate axis. The results show that this coupling model can be tested by the detection of high-frequency gravitational waves.

关键词： modified theory gravitational wave wave vector

Quasinormal modes and late time tails of perturbation fields on a Schwarzschild-like black hole with a global monopole in the Einstein-bumblebee theory

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Science China(Physics,Mechanics & Astronomy) 2023年第10期66卷 33-43页

作者： Xiaolin Zhang mengjie wang Jiliang Jing School of Physics and Electronics Synergetic Innovation Center for Quantum Effects and Applicationsand Institute of Interdisciplinary StudiesHunan Normal UniversityChangsha 410081China

In this paper we complete a systematic study on quasinormal modes(QNMs) and late time tails for scalar,Dirac and Maxwell fields on a spherically symmetric Schwarzschild-like black hole with a global monopole in the Einstein-bumblebee *** look for QNMs,we solve the equations of motion for all perturbation fields considered herein numerically,by employing both the matrix and the WKB methods,and find good agreements for numeric data obtained by these two techniques in the regime when both are *** impact of the bumblebee parameter c,the monopole parameter η^(2),and the multipole number l on the fundamental quasinormal frequency are analyzed in *** results are shown in terms of the quasinormal frequency measured by √1+c M ,where M is a black hole mass *** observe,by increasing the parameter c(η^(2)) with fixed first few l,that the real part of QNMs increases for all spin fields;while the magnitude of the imaginary part decreases for scalar and Dirac fields but increases for Maxwell *** increasing the multipole numberlwith fixed other parameters,we disclose that the real part of QNMs for all spin fields increases while the magnitude of the imaginary part decreases for scalar and Dirac fields but increases for Maxwell *** the eikonal limit(l>>n),QNMs for all spin fields coincide with each other and the real part scale linearly with *** particular,the asymptotic QNMs approach the corresponding results given by the first order WKB formula,and only the real part of QNMs is dependent on the bumblebee and monopole *** addition,it is shown that the late time behavior is determined not only by the multipole number but also by the bumblebee and monopole parameters,and is distinct for bosonic and fermonic ***,the presence of the bumblebee(monopole) field makes the spin fields decay *** results indicate,both in the context of QNMs and late time tails,that the bumblebee field and the monopole field play the same ro

关键词： Einstein-bumblebee theory perturbation fields dynamic evolution

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一种适用于海洋平台的电控手柄的结构设计

机械 2024年第3期51卷 59-64页

作者：王梦杰韩嘉骅四川大学机械工程学院四川成都610065

海洋平台是长期远离港口的外海海域从事钻探和石油开采的人工岛,由于长期处于海风、海浪、潮流、地震等恶劣环境下,会造成海洋平台产生强震动的现象,从而有可能造成平台设备故障以及危及作业人员的生命安全。为了提高海洋平台的抗震能力... 详细信息

海洋平台是长期远离港口的外海海域从事钻探和石油开采的人工岛,由于长期处于海风、海浪、潮流、地震等恶劣环境下,会造成海洋平台产生强震动的现象,从而有可能造成平台设备故障以及危及作业人员的生命安全。为了提高海洋平台的抗震能力,提出了一种采用机械锁定结构进行定位的离散型电控手柄的设计方案,并对此设计方案进行小批量加工验证以及疲劳寿命实验验证。结果显示,采用机械结构进行定位的电控手柄可以满足抗震性的要求,并且在经过1×10^(6)次加速疲劳寿命测试后,该电控手柄结构仍然可以快速、准确定位,且测试前后挡位反馈力变化幅度较小。综合上述实验结果,这种采用机械锁定结构进行定位的离散型电控手柄的设计方案可以有效避免由于海洋平台的强震动而产生跳档、脱档的问题,并且具有较高的可靠性与稳定性,可以满足海洋平台电控手柄的使用要求,并且可为后续同类型的电控手柄研究提供实验依据。

关键词：海洋平台抗震性电控手柄离散型

维普期刊数据库博看期刊

基于生物信息学分析干燥综合征伴发疲劳机制及中药预测研究

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中国中医基础医学杂志 2024年第1期30卷 82-87页

作者：王梦洁刘英黄迪山东中医药大学济南250300 山东中医药大学附属医院济南250000

目的从生物信息学角度分析干燥综合征(sjogren's syndrome,SS)伴发疲劳相关的生物标记物,探讨SS伴发疲劳的发病机制,并通过差异基因预测治疗SS伴发疲劳的潜在中药。方法从基因表达数据库(gene expression omnibus,GEO)下载GSE66795数... 详细信息

目的从生物信息学角度分析干燥综合征(sjogren's syndrome,SS)伴发疲劳相关的生物标记物,探讨SS伴发疲劳的发病机制,并通过差异基因预测治疗SS伴发疲劳的潜在中药。方法从基因表达数据库(gene expression omnibus,GEO)下载GSE66795数据集,使用R语言分析得到差异表达基因(differentially expressed genes,DEGs),对其进行基因本体(gene ontology,GO)及京都基因与基因组百科全书(Kyoto encyclopedia of genes and genomes,KEGG)富集分析,后通过STRING数据库、Cytoscape软件及其插件得到关键基因,将关键基因与医学本体信息检索平台相互映射,筛选出治疗SS伴发疲劳的中药。结果共得到48个DEGs,包括46个上调基因和2个下调基因,并筛选出10个关键基因。GO和KEGG富集分析显示,这些基因多富集甲型流感、丙型肝炎、麻疹、冠状病毒-COVID-19等多条病毒感染通路。筛选出3类潜在中药,分别为清肝、补肾、清热解毒类药物。结论通过对DEGs的分析加深了对SS伴发疲劳发生机制的认识,并为中药治疗本病提供了潜在基因靶标及思路。

关键词：干燥综合征疲劳生物信息学差异表达基因中药预测

New self-consistent effective one-body theory for spinless binaries based on the post-Minkowskian approximation

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Science China(Physics,Mechanics & Astronomy) 2022年第10期65卷 38-44页

作者： Jiliang Jing Sheng Long Weike Deng mengjie wang Jieci wang Department of Physics Key Laboratory of Low Dimensional Quantum Structures and Quantum Control of Ministry of Educationand Synergetic Innovation Center for Quantum Effects and ApplicationsHunan Normal UniversityChangsha 410081China Center for Gravitation and Cosmology College of Physical Science and TechnologyYangzhou UniversityYangzhou 225009China

The effective one-body theories, introduced by Buonanno and Damour, are novel approaches to constructing a gravitational waveform template. By taking a gauge in which ψ_(1)^(B) and ψ_(3)^(B) vanish, we find a decoupled equation with separable variables for ψ_(4)^(B) in the effective metric obtained in the post-Minkowskian approximation. Furthermore, we set up a new self-consistent effective one-body theory for spinless binaries, which can be applicable to any post-Minkowskian orders. This theory not only releases the assumption that v/c should be a small quantity but also resolves the contradiction that the Hamiltonian, radiation-reaction force, and waveform are constructed from different physical models in the effective one-body theory with the post-Newtonian approximation. Compared with our previous theory [Sci. China-Phys. Mech. Astron. 65, 260411(2022)], the computational effort for the radiation-reaction force and waveform in this new theory will be tremendously reduced.

关键词： Hamilton equations coalescing compact object binary system self-consistent effective one-body theory