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Comprehensive insights:unraveling the mechanisms of gut commensals in glucose metabolism regulation

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Science China(life Sciences) 2024年第2期67卷 414-417页

作者： zhipeng li Qixing Nie Shao-Ping Nie State Key Laboratory of Food Science and Resources China-Canada Joint Lab of Food Science and Technology(Nanchang)Key Laboratory of Bioactive Polysaccharides of Jiangxi ProvinceNanchang UniversityNanchang 330047China

The prevalence of type 2 diabetes(T2D)has escalated to a global epidemic,garnering widespread *** research utilizing germ-free(GF)mice,antibiotic treatments,and fecal microbiota transplantation approaches has established the critical role of gut microbiota in modulating glucose *** microbiota interacts with diets and the mucosal immune system,influencing intestinal permeability and the penetration of microbial products.

关键词： metabolism utilizing insight

Characteristics and mechanism of Ni^(2+)and Cd^(2+)adsorption by recovered perlite from agar extraction residue

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Chinese Journal of Chemical Engineering 2024年第8期72卷 141-152页

作者： Juan Wang Yanbing Zhu Zedong Jiang Xiping Du Mingjing Zheng lijun li Hui Ni Yuanpeng Wang zhipeng li Qingbiao li College of Ocean Food and Biological Engineering Jimei UniversityXiamen 361021China Fujian Provincial Key Laboratory of Food Microbiology and Enzyme Engineering Xiamen 361021China Research Center of Food Biotechnology of Xiamen City Xiamen 361021China Xiamen Ocean Vocational College Xiamen 361021China College of Chemistry and Chemical Engineering Xiamen UniversityXiamen 361021China

Ni^(2+)and Cd^(2+)in wastewater accumulated through the ecological chain and could jeopardize human *** of Ni^(2+)and Cd^(2+)from wastewater using recovered perlite was an important way to solve the problem of resource utilization of solid waste from agar *** previous study confirmed that recovered perlite from agar extraction residue had better pore size and specific surface area than commercial ***,the adsorption efficiency and adsorption mechanism of recovered perlite were the main factors limiting its adsorption *** adsorption process of Ni^(2+)and Cd^(2+)by recovered perlite in aqueous solution was described by the pseudo-second-order kinetic equation,and the relevant adsorption mechanism was mainly *** with commercial perlite,the adsorption removal rate of Ni^(2+)and Cd^(2+)by enzymatic recovered perlite could reach 92.9%and 89.2%,respectively,and were improved by 12.63%and 13.03%.Langmuir isothermal adsorption model could better describe the isothermal adsorption process of recovered perlite on heavy metal Ni^(2+)and Cd^(2+),and the relevant adsorption mechanism was mainly monolayer *** X-ray photoelectron spectroscopy(XPS)results indicated that the decrease of Si—O Si^(2+)hydroxyl coordination bond and the increase of C—Si bond might make the binding effect of recovered perlite with heavy metals *** competitive adsorption of Ni^(2+)and Cd^(2+)by recovered perlite was still dominated by chemisorption and monolayer *** study was expected to provide a theoretical basis and technical support for the removal of Ni^(2+)and Cd^(2+)from wastewater using recovered perlite from seaweed residue.

关键词： Agar extraction residue Recovered perlite Heavy metal ion Adsorption property

Speed of Sound in Asymmetric Quark Matter

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原子核物理评论 2024年第1期41卷 587-593页

作者： XIE Chonglong HE Weibo li zhipeng SHAO Guoyun MOE Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter School of PhysicsXi’an Jiaotong UniversityXi’an 710049China School of Physics Peking UniversityBeijing 100871China

The speed of sound in quark matter is an important physical quantity for studying the properties and the spacetime evolution of quark-gluon plasma(QGP).The behavior of the speed of sound with respect to temperature and density can reveal to some extent the equation of state and the phase structure of *** upon the previous studies on the speed of sound in symmetric quark matter,the formulae for calculating the speed of sound in asymmetric quark matter in the temperature-density space are further *** PNJL model is then used to calculate the dependence of the speed of sound on isospin ***,the relationship between the magnitude of the speed of sound and the QCD phase structure is discussed,and the regions where the acoustic equation fails are indicated under different physical *** is found that the boundary of vanishing sound speed in asymmetric quark matter is smaller than that in symmetric quark matter,meaning that the range where the acoustic wave equation fails in asymmetric quark matter is smaller than that in symmetric quark *** results also indicate that in most of the stable phase,the speed of sound in asymmetric quark matter is slightly larger than that in symmetric quark matter.

关键词： quark-gluon plasma equation of state speed of sound

基于半导体桥和含能材料的信息储存介质自毁模块研究

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北京理工大学学报 2024年第6期44卷 579-587页

作者：娄文忠李志鹏冯恒振李明愉北京理工大学机电学院北京100081 北京理工大学重庆创新中心重庆401120

针对高安全等级信息储存介质硬件层面的防护,开展了基于半导体桥(SCB)和含能材料的低驱动能量自毁模块的研究.建立了SCB等离子体发火、能量传递、含能材料点火的数学模型并完成了理论计算,利用COMSOL搭建SCB多物理场仿真模型并校核其性... 详细信息

针对高安全等级信息储存介质硬件层面的防护,开展了基于半导体桥(SCB)和含能材料的低驱动能量自毁模块的研究.建立了SCB等离子体发火、能量传递、含能材料点火的数学模型并完成了理论计算,利用COMSOL搭建SCB多物理场仿真模型并校核其性能,搭建了试验平台并进行SCB与含能材料发火性能测试的试验.仿真和试验结果表明:含能自毁模块具有优良的发火性能,能在5 V充电电压的激励下,起爆SCB桥区并使桥区温度能在18μs内达到2700 K,从而激发0.43 mg叠氮化铜在50μs内起爆产生爆轰波.含能自毁模块能够完成能量的传递并摧毁目标信息储存介质,有效避免信息储存介质关键信息被窃取,保证了信息储存介质的安全性.

关键词：信息安全技术自毁模块半导体桥含能材料数值模拟

考虑消费者餍足效应的网络视频产业链最优决策研究

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中国管理科学 2024年第6期32卷 229-239页

作者：李志鹏周晓宇南昌大学经济管理学院江西南昌330031 南昌大学中国中部经济社会发展研究中心江西南昌330031

针对独播和联播两种网络视频产业链结构,考虑消费者的餍足效应,研究了内容商、广告商和视频平台关于内容分成单价、广告植入量和会员费的互动决策,分析了餍足效应的影响。结果表明,当消费者餍足效应增大时,内容商越倾向于采取广告排斥... 详细信息

针对独播和联播两种网络视频产业链结构,考虑消费者的餍足效应,研究了内容商、广告商和视频平台关于内容分成单价、广告植入量和会员费的互动决策,分析了餍足效应的影响。结果表明,当消费者餍足效应增大时,内容商越倾向于采取广告排斥型分成单价,各主体的均衡决策和均衡利润都减少,且两种播放模式下的内容分成单价、广告植入量、视频总播放量、内容商利润、广告商利润和消费者剩余的差异都减小,但联播模式下在位平台的利润越可能比独播模式下的高。此外,忽视餍足效应将导致视频播放量、消费者剩余、广告商利润和平台利润降低,但内容商利润有可能增加。

关键词：网络视频餍足效应双边市场数字内容平台接入策略

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基于参数辨识的磁聚焦式扭矩传感器模型研究

仪表技术与传感器 2024年第8期 6-11页

作者：陈杰李志鹏李健东北林业大学机电工程学院

为解决磁聚焦式扭矩传感器模型未知参数问题,实现其更精确地测量,文中通过对此传感器机理分析建立了数学模型与非零初始条件下的系统模型,确定了辨识参数矩阵。提出了一种预测误差法与自适应粒子群算法相结合的参数辨识方法。搭建正弦... 详细信息

为解决磁聚焦式扭矩传感器模型未知参数问题,实现其更精确地测量,文中通过对此传感器机理分析建立了数学模型与非零初始条件下的系统模型,确定了辨识参数矩阵。提出了一种预测误差法与自适应粒子群算法相结合的参数辨识方法。搭建正弦激励校准实验系统对其进行验证,结果表明,该方法有效地实现了传感器参数的辨识,得到的传感器模型具有较高的精度,为其动态特性分析与误差补偿提供了可靠依据。

关键词：磁聚焦式扭矩传感器参数辨识 ARMAX模型自适应粒子群算法预测误差法非零初始条件

Recent advances in design of hydrogen evolution reaction electrocatalysts at high current density:A review

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Chinese Journal of Catalysis 2024年第8期63卷 33-60页

作者： zhipeng li Xiaobin liu Qingping Yu Xinyue Qu Jun Wan Zhenyu Xiao Jingqi Chi Lei Wang Key Laboratory of Eco-chemical Engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green Manufac-turingCollege of Environment and Safety EngineeringQingdao University of Science and TechnologyQingdao 266042ShandongChina College of Chemistry and Molecular Engineering Qingdao University of Science and TechnologyQingdao 266042ShandongChina

The electrolysis of water powered by renewable energy sources offers a promising method of"green hydrogen"production,which is considered to be at the heart of future carbon-neutral energy *** the past decades,researchers have reported a number of hydrogen evolution reaction(HER)electrocatalysts with activity comparable to that of commercial Pt/C,but most of them are tested within a small current density range,typically no more than 500 mA cm^(-2).To realize the industrial application of hydrogen production from water electrolysis,it is essential to develop high-efficiency HER electrocatalysts at high current density(HCD≥500 mA cm^(-2)).Nevertheless,it remains challenging and significant to rational design HCD electrocatalysts for *** this paper,the design strategy of HCD electrocatalysts is discussed,and some HCD electrocatalysts for HER are reviewed in seven categories(alloy,metal oxide,metal hydroxide,metal sulfide/selenide,metal nitride,metal phosphide and other derived electrocatalysts).At the end of this article,we also pro-pose some viewpoints and prospects for the future development and research directions of HCD electrocatalysts for HER.

关键词： Electrocatalyst High current density Hydrogen evolution reaction Water electrolysis

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隧道衬砌结构可靠度分析的三阶矩方法

地下空间与工程学报 2024年第S1期20卷 33-40页

作者：李志鹏伦培元中南大学土木工程学院长沙410075 珠江水利科学研究院水利工程研究所广州510611 深圳大学土木与交通工程学院广东深圳518060

隧道衬砌结构的可靠度分析是隧道工程中的关键研究领域。传统的分析方法主要基于蒙特卡罗有限元法,通过将基本随机变量整合为两个综合变量,然后进行一次二阶矩法或二次二阶矩法来计算可靠度。该方法在处理综合变量之间的相关性时可能存... 详细信息

隧道衬砌结构的可靠度分析是隧道工程中的关键研究领域。传统的分析方法主要基于蒙特卡罗有限元法,通过将基本随机变量整合为两个综合变量,然后进行一次二阶矩法或二次二阶矩法来计算可靠度。该方法在处理综合变量之间的相关性时可能存在不足,导致分析结果的精确性受到影响。为了解决这一问题,本文提出了一种新的三阶矩方法来进行隧道衬砌结构的可靠度分析。该方法首先利用基于拉丁超立方抽样的蒙特卡罗有限元法来计算隧道衬砌结构极限状态功能函数的前三阶矩(包括均值、方差和偏度),然后使用三阶矩可靠度指标来估计衬砌结构的失效概率。通过算例验证,该方法不仅简化了计算流程,而且提高了结果的精确性,为隧道衬砌结构及其他隐式功能函数的结构可靠度分析提供了新的研究方法。

关键词：隧道衬砌结构可靠度蒙特卡罗有限元法拉丁超立方抽样三阶矩方法

Boehmeria nivea var. strigosa (Urticaceae), a new variety from Southwest China

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广西植物 2024年第9期44卷 1617-1624,I0001-I0006页

作者： ZHAO Ying Richard I.MILNE li zhipeng Amos KIPKOECH WU Zengyuan Germplasm Bank of Wild Species Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China CAS Key Laboratory for Plant Diversity and Biogeography of East Asia Kunming Institute of BotanyChinese Academy of SciencesKunming 650201China University of Chinese Academy of Sciences Beijing 100049China School of life Sciences Yunnan UniversityKunming 650091YunnanChina Institute of Molecular Plant Sciences/School of Biological Sciences University of EdinburghEH93JHEdinburghUK

Boehmeria nivea *** Zeng ***&***,a new variety of ***(Urticaceae)from Southwest China,is here described based on evidence from morphology and molecular *** new variety is mainly characterized by its green abaxial leaf blade,partly connate stipules,and densely patent strigose hairs on stems and *** phylogenetic analysis based on rbc L,nrDNA and rbc L+nrDNA datasets,revealed that all individuals of *** *** formed a monophyletic *** conservation status of *** *** is assessed as“Near Threatened”(NT)according to IUCN evaluation *** discovery of this new variety is not only crucial for the taxonomy of ramie,but also provides reference for the exploration and utilization of ramie.

关键词： Boehmeria nivea morphology molecular phylogeny new variety Southwest China Yunnan