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Science China Chemistry 2022年第9期65卷 1817-1821页

作者： Lu Zhou mengfan zhao Xinyu Chen Jinming Zhou Mingxing Wu Na Wu Key Laboratory of Inorganic Nanomaterials of Hebei Province College of Chemistry and Material ScienceHebei Normal UniversityShijiazhuang 050024China

Lithium(Li)metal has been considered as one of the most promising anodes for high-energy-density batteries.However,the hyperactivity of metallic Li and its dendrite growth are the major hurdles to its practical applications.Herein,a multi-functional solid-interphase-protective layer with excellent waterproof performance and fast self-healing properties was modified on the surface of Li metal to address the above issues.Under the protection of this interface,the metallic Li(denoted as P-Li)exhibited superior electrochemical stability in both Li/Li symmetric cells and full cells.Notably,even after being exposed to humid air for 3 h,the LiFePO_(4)||Li full battery with P-Li anodes still showed long-term stability with a transcendental capacity retention of~100% after 100 cycles,revealing a significant advantage to the non-working LiFePO_(4)||Li battery with air-exposed bare Li anodes.

关键词： Li metal anode solid interphase protective layer stable Li plating/stripping self-healable hydrophobic property

联合异质图卷积网络和注意力机制的假新闻检测

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小型微型计算机系统 2024年第2期45卷 301-308页

作者：韩晓鸿赵梦凡张钰涛河北工程大学信息与电气工程学院河北邯郸056038 天津大学智能与计算学部天津300350

社交媒体平台的开放性和包容性为人们提供了自由的表达方式,但也引发了新的社会问题,假新闻在社交平台层出不穷,会引起公众恐慌,侵害人们的精神健康,这使得假新闻检测尤为必要.现有的假新闻检测方法大多侧重于从文本内容、用户和传播模... 详细信息

社交媒体平台的开放性和包容性为人们提供了自由的表达方式,但也引发了新的社会问题,假新闻在社交平台层出不穷,会引起公众恐慌,侵害人们的精神健康,这使得假新闻检测尤为必要.现有的假新闻检测方法大多侧重于从文本内容、用户和传播模式中挖掘有效信息,但是这些方法没有充分利用文本内容的全局语义关系.为了有效融合新闻内容的全局语义信息和新闻传播的全局结构关系,本文提出一种基于元路径的推文-词-用户异质图卷积注意力框架HGCAN,根据元路径将构建的推文-词-用户异质图分解为两个子图,通过图卷积网络提取传播结构特征,利用注意力机制聚合邻居节点的信息并学习子图重要性,从而有效学习节点的特征表示.在两个公开数据集上的实验结果表明,相比于其他方法,本文方法在准确率和F1指标上都取得了较为先进的结果.

关键词：异质图图卷积网络注意力机制假新闻检测

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高铁接触网智能化数据处理系统

科技风 2024年第12期 4-6页

作者：王跃竣赵培宇张瑞喆赵梦凡万宝涛马宇晴石家庄铁道大学电气与电子工程学院河北石家庄050043 石家庄铁路职业技术学院电气工程系河北石家庄050041

基于现有的接触网数据处理复杂、需要大量的人工操作、耗费的时间较长、效率不够高的现状,结合现代铁路行业高速发展的需求,采用软件工程、数据库、神经网络等技术,研发了一种适合高铁接触网的数据处理系统。高铁接触网智能化数据处理... 详细信息

基于现有的接触网数据处理复杂、需要大量的人工操作、耗费的时间较长、效率不够高的现状,结合现代铁路行业高速发展的需求,采用软件工程、数据库、神经网络等技术,研发了一种适合高铁接触网的数据处理系统。高铁接触网智能化数据处理系统由数据计算、数据筛查和故障检测三个子系统组成,实现了接触网从设计、预制到检测全过程中的数据融合与数据处理,为我国高铁接触网的智能化、数字化发展提供了新思路。该系统已经在实际场景中使用,并取得了良好的效果。

关键词：接触网智能化数据处理神经网络

Mechanism of high-preload support based on the NPR anchor cable in layered soft rock tunnels

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Journal of Mountain Science 2024年第4期21卷 1403-1418页

作者： SUI Qiru HE Manchao SHI mengfan TAO Zhigang zhao Feifei ZHANG Xiaoyu State Key Laboratory for Tunnel Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China

The control of large deformation problems in layered soft rock tunnels needs to solve urgently.The roof problem is particularly severe among the deformation issues in tunnels.This study first analyzes the asymmetric deformation modes in layered soft rock tunnels with large deformations.Subsequently,we construct a mechanical model under ideal conditions for controlling the roof of layered soft rock tunnels through high preload with the support of NPR anchor cables.The prominent roles of long and short NPR anchor cables in the support system are also analyzed.The results indicate the significance of high preload in controlling the roof of layered soft rock tunnels.The short NPR anchor cables effectively improve the integrity of the stratified soft rock layers,while the long NPR anchor cables effectively mobilize the self-bearing capacity of deep-stable rock layers.Finally,the high-preload support method with NPR anchor cables is validated to have a good effect on controlling large deformations in layered soft rock tunnels through field monitoring data.

关键词： Tunnel engineering Soft rock High-preload support NPR anchor cables

Limosilactobacillus mucosae FZJTZ26M3 prevents NAFLD in mice through modulation of lipid metabolism and gut microbiota dysbiosis

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Food Science and Human Wellness 2024年第3期13卷 1589-1601页

作者： Danting Dang Bowen Li mengfan Ding RPaul Ross Catherine Stanton Jianxin zhao Bo Yang Wei Chen State Key Laboratory of Food Science and Resources Jiangnan UniversityWuxi 214122China School of Food Science and Technology Jiangnan UniversityWuxi 214122China International Joint Research Center for Probiotics&Gut Health Jiangnan UniversityWuxi 214122China APC Microbiome Ireland University College CorkCork T12 YT20Ireland Teagasc Food Research Centre MooreparkFermoyCork T12 YT20Ireland National Engineering Research Center for Functional Food Jiangnan UniversityWuxi 214122China

Lactobacillus are considered promising therapeutic methods for nonalcoholic fatty liver disease(NAFLD).The effects of two strains of Ltmosilactobacillus mucosae on NAFLD were investigated in this study.Fourweek-old male C57BL/6J mice were divided into 4 groups(n=8 per group,Control,Model,FZJTZ26M3,FGSYC17L3).L.mucosae FZJTZ26M3 reduced the mice 's body weight,liver weight,and adipose tissue weight after 12 weeks of therapy.According to serum analysis,total cholesterol,triacylglycerol,and low-density lipoprotein cholesterol significantly decreased after L.mucosae FZJTZ26M3 intervention.Liver pathology showed that L.mucosae FZJTZ26M3 was effective to ameliorate lipid deposition in NAFLD mice.Additionally,the expression of the gene related to lipid metabolism in the liver and adipose tissue was analyzed,and the results indicated that L.mucosae FZJTZ26M3 could alleviate NAFLD by regulating lipid metabolism.Furthermore,the results of 16S rRNA gene sequencing revealed a drop in the relative abundance of Ruminococcaceae,which is linked to inflammation,but the relative abundance of a potential probiotic Akkermansia significantly increased after L.mucosae FZJTZ26M3 intervention.Generally,L.mucosae FZJTZ26M3 could be a candidate to prevent NAFLD.

关键词： Limosilactobacillus mucosae Nonalcoholic fatty liver disease(NAFLD) Probiotic Lipid metabolism Gut microbiota

Comprehensive understanding of the thriving electrocatalytic nitrate/nitrite reduction to ammonia under ambient conditions

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Journal of Energy Chemistry 2024年第5期92卷 459-483页

作者： Xinying zhao Yuzhuo Jiang mengfan Wang Yunfei Huan Qiyang Cheng Yanzheng He Tao Qian Chenglin Yan Collaborative Innovation Center of Suzhou Nano Science and Technology College of EnergySoochow UniversitySuzhou 215006JiangsuChina School of Chemistry and Chemical Engineering Nantong UniversityNantong 226019JiangsuChina School of Petrochemical Engineering Changzhou UniversityChangzhou 213164JiangsuChina

Ammonia(NH_(3))is a multifunctional compound that is an important feedstock for the agricultural and pharmaceutical industries and attractive energy storage medium.At present,NH_(3)synthesis is highly dependent on the conventional Haber–Bosch process that operates under harsh conditions,which consumes large quantities of fossil fuels and releases a large amount of carbon dioxide.As an alternative,electrosynthesis is a prospective method for producing NH_(3)under normal temperature and pressure conditions.Although electrocatalytic nitrogen reduction to ammonia has attracted considerable attentions,the low solubility of N_(2)and high N≡N cracking energy render the achievements of high NH_(3) yield rate and Faradaic efficiency difficult.Nitrate and nitrite(NO_(x)^(-))are common N-containing pollutants.Due to their high solubilities and low dissociation energy of N=O,NO_(x)^(-)−are ideal raw materials for NH_(3) production.Therefore,electrocatalytic NO_(x)^(-)−reduction to NH_(3)(eNO_(x)RR)is a prospective strategy to simultaneously realise environmental protection and NH_(3) synthesis.This review offers a comprehensive understanding of the thriving eNO_(x)RR under ambient conditions.At first,the popular theory and mechanism of eNO_(x)RR and a summary of the measurement system and evaluation criteria are introduced.Thereafter,various strategies for developing NO_(x)−reduction catalysts are systematically presented and discussed.Finally,the challenges and possible prospects of electrocatalytic NO_(x)^(-1) reduction are outlined to facilitate energy-saving and environmentally friendly large-scale synthesis of NH_(3) in the future.

关键词： Electrocatalytic nitrate reduction Electrocatalytic nitrite reduction Ammonia synthesis Pollutant removal Electrosynthesis

青海省春小麦和油菜播种期气象条件分析及预测模型构建

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干旱地区农业研究 2022年第6期40卷 232-241页

作者：申燕玲赵梦凡赵彤沈晓燕青海省气象科学研究所青海西宁810001 青海省防灾减灾重点实验室青海西宁810001

利用1961―2019年青海省春小麦和油菜农业气象观测站发育期及气象要素数据,采用统计学方法对播种期相关气象要素进行分析。结果表明:与春小麦和油菜播种期相关的气象条件中,日平均气温和地温的增温趋势较为明显,分别以0.40℃·10a^(-1)... 详细信息

利用1961―2019年青海省春小麦和油菜农业气象观测站发育期及气象要素数据,采用统计学方法对播种期相关气象要素进行分析。结果表明:与春小麦和油菜播种期相关的气象条件中,日平均气温和地温的增温趋势较为明显,分别以0.40℃·10a^(-1)和0.44℃·10a^(-1)的速度增加;相对湿度在2004年之后呈缓慢降低趋势(-0.57%·10a^(-1));地温和气温对播种的影响最大;气温稳定通过0℃、3℃和6℃以及地温稳定通过0℃、6℃和10℃的初日在空间分布上受海拔影响,整体呈现“东南早、西北晚”的分布特征;春小麦和油菜稳定通过0℃、3℃以及地温稳定通过0℃初日提前的趋势较为明显。根据气温、地温稳定通过界限温度初日统计法建立的模型与播种期相关性较高,可为春小麦和油菜播种期预告提供依据。

关键词：春小麦油菜气象要素模型构建青海省

新文科背景下图书情报专业学位硕士研究生专业认同调查研究

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图书馆学研究 2023年第5期 2-10页

作者：支凤稳张萌赵梦凡河北大学管理学院河北大学河北省数字治理与协同治理研究基地

新文科背景下,各学科、专业都在积极谋篇布局,作为天然具有新文科特征的图书情报专业,更应有所作为。揭示图书情报专业学位(MLIS)硕士研究生的专业认同现状、影响因素及提升策略,是制定培养方案、提高培养质量的必要前提与重要依据。文... 详细信息

新文科背景下,各学科、专业都在积极谋篇布局,作为天然具有新文科特征的图书情报专业,更应有所作为。揭示图书情报专业学位(MLIS)硕士研究生的专业认同现状、影响因素及提升策略,是制定培养方案、提高培养质量的必要前提与重要依据。文章通过问卷调查获取研究数据,并进行实证分析。结果表明,MLIS研究生的专业认同普遍较高,且受性别、类型、入学前对专业的了解程度和进入专业方式的影响。培养MLIS研究生的交叉学科团队意识,加强专业宣传,重视专业实践能力培养,有针对性地提供就业指导,有助于提升专业认同。

关键词：新文科图书情报专业专业认同 MLIS

公平、信任与竞争情报共享风险的关系——来自中小企业的证据

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情报科学 2023年第1期41卷 118-125页

作者：支凤稳赵梦凡马桂雪河北大学管理学院河北保定071002

【目的/意义】鉴于竞争情报(Competitive Intelligence,CI)共享风险的相关研究缺乏实证支持,本研究试图揭示公平、信任与CI共享风险之间的关系,以期丰富现有CI理论与方法体系,并为我国中小企业开展CI共享实践和后续深入研究提供有益参... 详细信息

【目的/意义】鉴于竞争情报(Competitive Intelligence,CI)共享风险的相关研究缺乏实证支持,本研究试图揭示公平、信任与CI共享风险之间的关系,以期丰富现有CI理论与方法体系,并为我国中小企业开展CI共享实践和后续深入研究提供有益参考。【方法/过程】创造性地把公平、信任、CI共享风险(情报安全风险、关系绩效风险、财务绩效风险)整合在一个理论模型中,获取230份来自中小企业的有效样本,并运用SPSS和AMOS软件进行数据分析与模型检验。【结果/结论】公平、信任可以显著降低情报安全风险、关系绩效风险和财务绩效风险,但公平对信任的影响不显著。【创新/局限】检验了公平、信任与中小企业CI共享风险之间的关系,但不同情境下中小企业的CI共享风险及治理机制有待于深入探讨。

关键词：公平信任竞争情报共享风险中小企业

Bifidobacterium breve CCFM1078 regulates bone development in growing BALB/c mice via gut microbiota and metabolites to balance bone formation and resorption

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Food Science and Human Wellness 2024年

作者： Bowen Li mengfan Ding Xiaoming Liu Haiqin Chen Jianxin zhao R.Paul Ross Catherine Stanton Shilong Jiang Wei Chen Bo Yang Nutrition and Metabolism Research Division Innovation Center Heilongjiang Feihe Dairy Co. Ltd. National Engineering Research Center for Functional Food Jiangnan University State Key Laboratory of Food Science and Technology Jiangnan University PKUHSC-China Feihe Joint Research Institute of Nutrition and Healthy Lifespan Development APC Microbiome Ireland University College Cork School of Food Science and Technology Jiangnan University International Joint Research Center for Probiotics & Gut Health Jiangnan University Teagasc Food Research Centre

This study endeavors to investigate the effects of Bifidobacterium breve CCFM1078 on bone formation and resorption balance in growing BALB/c mice. Newborn BALB/c mice were assigned to the control group (administration saline) and the CCFM1078 group (administration B. breve CCFM1078， 3 × 109CFU/day) in 3-， 4-， and 5-week tests. All the groups have male and female distinctions. Our findings demonstrate that B. breve CCFM1078 exerts on the dynamic equilibrium between bone formation and resorption during the critical period of growth in mice by modulating the composition of gut microbiota and metabolites (hexadecanamide， linoleoyl ethanolamide， and palmitoyl ethanolamide)， the genes and proteins expression related to the GH/IGF-1 axis and Gs/PKA/CREB signaling pathways， as well as downstream osteogenic and osteoclastic differentiation factors. The effects of B. breve CCFM1078 were different with age and gender dependent. This finding suggests B. breve CCFM1078 may have potential applications in regulating bone metabolism in the growth period population.

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