检索结果-南通市图书馆

Food Bioscience 2023年第1期51卷 995-1004页

作者： Siqiang Jia jianpeng li Bin Yu Mengjie li Bo Cui State Key Laboratory of Biobased Material and Green Papermaking Qilu University of TechnologyShandong Academy of SciencesJinan250353China School of Food Science and Engineering Qilu University of TechnologyShandong Academy of SciencesJinanShandong250353China

This study is to explore the effects of low-performance inulin(SI,DP10)on myocardial injury in type 2 diabetic mice fed a high-fat diet(HFD)and its underlying *** weeks of supplementation of type 2 diabetic mice with ... 详细信息

This study is to explore the effects of low-performance inulin(SI,DPlin(HI,DP>10)on myocardial injury in type 2 diabetic mice fed a high-fat diet(HFD)and its underlying *** weeks of supplementation of type 2 diabetic mice with HI significantly improved blood glucose,insulin,and triglyceride levels in comparison with SI(pliorating myocardial injury by suppressing TNF-α,IL-1β,and CK-MB and promoting SDF-1βthan *** to SI,HI more significantly reduced the abundance of Firmicutes from 60.5%to 36.3%in type 2 diabetic mice fed a HFD and increased the abundance of Muribaculum,Blautia and Ruminococcaceae UCG-011 at the genus level(plism,bile acid metabolism,sphingolipid metabolism,and arachidonic acid metabolism,whereas HI supplementation increased prostaglandin h2 compared to *** summary,HI exhibited superior positive regulation of myocardial injury and gut microbiota dysfunction compared to SI.

关键词： Inulin Myocardial injury Type 2 diabetic mice Gut microbiota Fecal metabolome

Oxygen vacancy mediated bismuth-based photocatalysts

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Advanced Powder Materials

Advanced Powder Materials 2024年第4期3卷 57-91页

作者： Jiaqi Tian jianpeng li Yadan Guo Zhongyi liu Bin liu Jun li Henan Institute of Advanced Technology College of ChemistryState Key Laboratory of Coking Coal Resources Green ExploitationZhengzhou UniversityZhengzhou 450052China School of Water Resources and Environmental Engineering East China University of TechnologyNanchang 330013China Department of Materials Science and Engineering City University of Hong KongHong Kong SAR 999077China

Sunlight-driven photocatalysis,which can produce clean fuels and mitigate environmental pollution,has received extensive research attention due to its potential for addressing both energy shortages and environmental ***(Bi)-based photocatalysts with broad spectrum solar-light absorption and tunable structures,exhibit promising applications in solar-driven *** vacancy(OV)engineering is a widely recognized strategy that shows great potential for accelerating charge separation and small molecule *** on OV engineering,this review focuses on Bi-based photocatalysts and provides a comprehensive overview including synthetic methods,regulation strategies,and applications in photocatalytic *** synthetic methods of Bibased photocatalysts with OVs(BPOVs)are classified into hydrothermal,solvothermal,ultraviolet light reduction,calcination,chemical etching,and mechanical methods based on different reaction types,which provide the possibility for the structural regulation of BPOVs,including dimensional regulation,vacancy creation,elemental doping,and heterojunction ***,this review also highlights the photocatalytic applications of BPOVs,including CO_(2)reduction,N2 fixation,H2 generation,O_(2)evolution,pollutant degradation,cancer therapy,and bacteria ***,the conclusion and prospects toward the future development of BPOVs photocatalysts are presented.

关键词： Bismuth-based photocatalysts Oxygen vacancy Synthetic methods Structural regulation Broad spectrum light Photocatalysis

Foam properties and interfacial behavior of the heteroprotein complex of type-A gelatin/sodium caseinate

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Food Bioscience 2022年第5期49卷 1310-1317页

作者： Meng Zhao Yanzhen Zhang Qianwen Yang Tenchao li Chao Yuan jianpeng li li liang Katsuyoshi Nishinari Bo Cui State Key Laboratory of Biobased Material and Green Papermaking School of Food Science and TechnologyQilu University of TechnologyShandong Academy of SciencesJinan250353China Glyn O.Phillips Hydrocolloid Research Centre at HUT Hubei University of TechnologyWuhan430068China State Key Lab of Food Science and Technology School of Food Science and TechnologyJiangnan UniversityWuxiJiangsu214122China

Foam is one special colloid dispersion system and has been widely used in *** work aims to improve the foam properties of sodium caseinate(Cas)through the electrostatic complexation of Cas and type-A gelatin(GE),in which GE is one cheap and widely sourced basic *** and zeta potential measurements indicate that mass ratio(r=GE/Cas)was critical to the solubility of protein complexes at pH 6.0 and that soluble and insoluble complexes were respectively formed at low mass ratios(r=0.25,0.5 and 1)and high mass ratios(r=2 and 4).All soluble and insoluble complexes exhibited better foaming capacity than that of Cas and GE,while only soluble complexes significantly improved the foam stability of ***,the foam half-time of GE/Cas mixture at r=0.25 was 5525.2±405.7 s and 2.1 times that of *** dilatational rheology shows that the adsorption behavior of soluble and insoluble complexes was respectively similar to that of Cas and *** complexes formed more viscoelastic interface films than Cas,which could explain the better foam stability of soluble *** electron microscopy shows that electrostatic complexation of GE/Cas destroyed the micelle structure of Cas to varying degree but produced new ***/Cas heteroprotein complexes have the potential to be used as excellent foaming agents in food industry.

关键词： Sodium caseinate(Cas) Type-A gelatin(GE) Foaming properties Interfacial behavior Heteroprotein complexation

Comparison of Different Added Power in Waves Prediction Methods

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 Shipping and Ocean Engineering 2018年第1期8卷 21-29页

作者： CHEN Weimin li jianpeng DONG Guoxiang XING Lei State Key Laboratory of Navigation and Safety Technology Shanghai Ship and Shipping Research Institute Shanghai 200135 China

In order to predict the speed loss in the actual sea states more precisely, delivered power shall be measured more accurately as an input. Therefore, based on a 50,000 DWT tanker, various results obtained from different prediction methods were compared by a series of model tests performed in calm water and in waves. It is shown that speed loss deprived from RTIM （resistance and thrust identity method） method in regular waves test could satisfy the engineering requirements most.

关键词： Added power model test speed loss sea keeping prediction self propulsion test in waves.

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

砂岩高应力峰前卸围压试验研究

岩石力学与工程学报 2011年第3期30卷 473-479页

作者：刘建李建朋中国科学院武汉岩土力学研究所岩土力学与工程国家重点实验室湖北武汉430071

对采自重庆鱼嘴的砂岩开展若干围压(最小10 MPa、最大130 MPa)的保持轴压不变峰前卸围压试验,并与同围压下的常规三轴压缩试验结果进行对比分析,研究砂岩卸荷过程中的变形特征、破坏形态、峰值强度与残余强度特性及其扩容参数演化特征... 详细信息

对采自重庆鱼嘴的砂岩开展若干围压(最小10 MPa、最大130 MPa)的保持轴压不变峰前卸围压试验,并与同围压下的常规三轴压缩试验结果进行对比分析,研究砂岩卸荷过程中的变形特征、破坏形态、峰值强度与残余强度特性及其扩容参数演化特征。主要研究成果为:(1)加载路径下,围压增至130 MPa时,应力-应变曲线不出现应力降,可以认为围压130 MPa为砂岩脆-延转化压力。(2)加载破坏时,偏应力峰值前扩容量相对于峰后较小,但卸荷破坏偏应力峰值前则表现出较大的扩容量。(3)相同初始应力条件下,卸荷破坏时偏应力变化量比加载破坏时大,证明卸荷应力路径更容易引起砂岩试样的破坏。(4)相同围压下,卸荷破坏的破裂角大于加载破坏。(5)卸荷条件下得出的抗剪强度参数c比加载条件下低1.2%,?值则高4.8%;不论卸荷还是加载,残余变形阶段c值都大大减小,?值则变化不大。(6)围压对扩容的约束作用较显著,围压越大,剪胀角极值越小;卸荷开始后,剪胀角呈剧烈增加态势,迅速达到极值;剪胀角峰值与偏应力峰值不同步,前者滞后于后者;卸荷破坏剪胀角峰值比加载破坏剪胀角峰值大,且达到峰值经历的塑性剪切应变量相对较小,证明卸荷破坏的剪胀性更加显著。这些结论可揭示高应力条件下砂岩的卸荷力学特性,为西部深埋引水隧洞的开挖、支护设计及其稳定性分析提供理论参考。

关键词：岩石力学卸荷三轴压缩砂岩高围压扩容

Effect of naringenin in Qianggu capsule on population pharmacokinetics in Chinese women with primary osteoporosis

在线全文

学校读者我要写书评

暂无评论

Journal of Traditional Chinese Medicine 2015年第2期35卷 141-153页

作者： Wang Jiannong Jiang Junjie Xie Yanming Wei Xu li jianpeng Duan Jingli Xiong Xin Institute of Basic Medical Sciences Xi Yuan HospitalChina Academy of Chinese Medical Sciences Chinese Clinical Basic Institute China Academy of Chinese Medical Sciences Department of Pharmaceutics Third Hospital Affiliated Peking University

OBJECTIVE:To characterize naringenin(NAR) population pharmacokinetics(PPK) in Chinese women with primary ***:Ninety-eight female patients with primary osteoporosis from the Jingshan,Beixinqiao,Jiaodaokou,Chaoyangmen,and Donghuamen communities in Beijing,China,aged 40 to 80 years,received oral Qianggu capsules(250 mg).Blood samples were collected before and at 0.5,1,2,3,4,6,8,10,12,and 24 h after *** concentration of NAR in the blood samples was measured using high performance liquid chromatography-tandem mass *** analyses were performed with nonlinear mixed-effect modeling software(version 7.1.2,PsN3.2.12).The clearance(C1),central distribution volume(V),absorption rate constant(Ka1),peripheral distribution volume(VII),and inter-compartmental clearance(CliI) were set as parameters and estimated by the base model,covariate model,and final ***-Yang deficiency[Shenyangxu(SYAX)]and liver-kidney-Yin deficiency(Ganshenyinxu) are patterns of symptoms in Traditional Chinese Medicine that were set as covariates,along with age,height,blood urea nitrogen,serum creatinine,alanine transaminase,aspartate transaminase,and *** stepwise forward and backward procedures were accomplished to build *** final model was evaluated by internal and external validation,visual predictive check,bootstrap,and leverage ***:A one compartment open model with first order degradation was the best fitted to the concentration-time profiles following oral administration of *** mean of population parameters of the final model,C1,SYAX on C1,V,Ka1,CliI,and VII,were measured to be 37.6 L/h,0.427 L,123 L/h,0.12/h,0.3056,and 1.446,***-individual variability was estimated and SYAX was identified as a significant ***:The population pharmacokinetic model described in this study could effectively characterize the pharmacokinetic profile of NAR following administration of a single dose of o

关键词： Naringenin Pharmacokinetics Medicine Chinese traditional Qianggu capsule Total flavonoids of Drynaria fortunei

正交异性钢桥面横隔板弧形切口焊接残余应力分析

在线全文

学校读者我要写书评

暂无评论

焊接学报 2019年第8期40卷 131-137,149,I0006,I0007页

作者：黄炎李健朋吴其深圳市建筑工务署工程管理中心深圳518028 湖南大学长沙410082

为研究轮载压应力作用下弧形切口疲劳开裂机理,建立正交异性钢桥面板热弹塑性有限元模型,采用生死单元模拟了横隔板焊缝焊接过程,实现了焊接过程和焊缝凝结过程的热力耦合分析,得到了横隔板的焊接温度场和热应力场,获得了弧形切口残余... 详细信息

为研究轮载压应力作用下弧形切口疲劳开裂机理,建立正交异性钢桥面板热弹塑性有限元模型,采用生死单元模拟了横隔板焊缝焊接过程,实现了焊接过程和焊缝凝结过程的热力耦合分析,得到了横隔板的焊接温度场和热应力场,获得了弧形切口残余应力分布,并结合现场疲劳试验对弧形切口进行疲劳寿命评估.研究表明,焊接温度沿弧形切口变化显著,切口最小净截面处焊接残余拉应力达到了近300 MPa,耦合轮载作用下的压应力响应,弧形切口就会产生疲劳开裂的现象.

关键词：正交异性钢桥面板有限元分析弧形切口残余应力

基于现场实测应力谱的钢锚箱构造细节疲劳评价

在线全文

学校读者我要写书评

暂无评论

铁道科学与工程学报 2020年第11期17卷 2823-2831页

作者：吴其祝志文李健朋湖南大学土木工程学院湖南长沙410082 汕头大学土木与环境工程系广东汕头515063

为评价某大跨斜拉桥设计索力最大的钢锚箱在桥面通行车辆作用下的疲劳性能,开展随机车流下锚箱疲劳敏感构造细节的现场应力监测,获得构造细节的应力时程和应力谱,并基于Miner准则计算最大应力幅、等效应力幅及疲劳加载次数。基于中国公... 详细信息

为评价某大跨斜拉桥设计索力最大的钢锚箱在桥面通行车辆作用下的疲劳性能,开展随机车流下锚箱疲劳敏感构造细节的现场应力监测,获得构造细节的应力时程和应力谱,并基于Miner准则计算最大应力幅、等效应力幅及疲劳加载次数。基于中国公路钢结构桥梁设计规范(JTG D64—2015)对锚箱构造细节的疲劳寿命进行分析,并讨论锚箱顶底板端部围焊细节的疲劳性能。研究结果表明:货车通行下,钢锚箱顶底板端部围焊构造细节表现为整体结构应力响应特征,在一辆货车通行下仅产生一个应力幅;在锚箱全部构造细节中,顶底板端部围焊细节应力幅高于其他构造细节,也是锚箱疲劳最不利构造细节;其中底板端部围焊处的应力幅最大,实测最大应力幅达56.7 MPa,等效应力幅和日均加载次数分别为10.1 MPa和4484次,该构造细节处疲劳累计损伤主要由相对较大的10~30 MPa的应力幅贡献。研究认为,桥面车辆通行下锚箱构造细节的应力幅较小,其疲劳性能都满足大桥设计要求。

关键词：钢锚箱疲劳构造细节现场实测随机车流

区间时变时滞离散系统的稳定性分析及控制器设计

在线全文

学校读者我要写书评

暂无评论

哈尔滨工业大学学报 2017年第11期49卷 18-23页

作者：李建鹏张颖张瑞曹勇哈尔滨工业大学深圳研究生院广东深圳518055 深圳职业技术学院广东深圳518172

含有区间状态时滞的系统在实际中有重要的应用,如它可以方便地描述一类网络控制系统.本文对含有区间状态时滞的线性离散系统考虑了稳定性分析与状态反馈控制器设计问题.为研究该类系统的稳定性,通过引入二重求和和三重求和构造了新型的L... 详细信息

含有区间状态时滞的系统在实际中有重要的应用,如它可以方便地描述一类网络控制系统.本文对含有区间状态时滞的线性离散系统考虑了稳定性分析与状态反馈控制器设计问题.为研究该类系统的稳定性,通过引入二重求和和三重求和构造了新型的Lyapunov-Krasovskii泛函.在对所构造的泛函处理其差分的过程中,利用了基于Abel引理的有限和不等式技术以及时滞分割方法,进而提出了该类系统稳定的线性矩阵不等式充分性条件.相对于以往的Lyapunov泛函,本文所提出的Lyapunov-Krasovskii泛函包含更多的时滞信息,而且所采用的差分处理方法不涉及原系统的模型变化,因而所提出的渐近稳定充分条件具有较低保守性.另外,相对于以前存在的自由权矩阵方法,本文所提出的方法具有较少的可行性变量矩阵,因而能有效地降低计算量.基于所提出的稳定性条件,本文进一步提出了无记忆状态反馈镇定控制器的设计方法.所提出镇定控制器设计方法也通过线性矩阵不等式给出,具有很好的数值稳定性.最后,通过数值算例验证了所提方法的正确性和有效性.

关键词：离散系统区间时滞稳定性状态反馈

在线全文

学校读者我要写书评

暂无评论

三环驱动轴对称推力矢量喷管逆运动学分析

航空动力学报 2018年第1期33卷 24-29页

作者：赵志刚李建鹏刘洋李维维兰州交通大学机电工程学院兰州730070

针对某三环驱动轴对称推力矢量喷管,将喷管驱动结构分解为三个子模块,应用空间机构位置分析法、解析几何法、坐标转换法分别对上、中、下子模块进行分析,建立了完整的喷管驱动机构逆运动学模型,利用实体实验与仿真测试相结合的方法验证... 详细信息

针对某三环驱动轴对称推力矢量喷管,将喷管驱动结构分解为三个子模块,应用空间机构位置分析法、解析几何法、坐标转换法分别对上、中、下子模块进行分析,建立了完整的喷管驱动机构逆运动学模型,利用实体实验与仿真测试相结合的方法验证了喷管结构设计的合理性和所建模型用于喷管控制的有效性。所建模型准确率达到98%,为下一步喷管优化设计及控制器的研发提供了一定的理论基础。

关键词：三环驱动轴对称矢量喷管逆运动学建模空间机构位置分析法喉道面积