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Properties of Steel Slag and Stainless Steel Slag as Cement Replacement Materials:A Comparative Study

Journal of Wuhan University of Technology(Materials Science) 2018年第6期33卷 1444-1451页

作者： SALY Fathy guo Liping MA Rui GU Chunping SUN Wei School of Material Science and Engineering Southeast UniversityNanjing 211189China Collaborative Innovation Center for Ad-vanced Civil Engineering Materials Nanjing 211189China Jiangsu Key Laboratory of Construction Materials Nanjing 211189China College of Civil Engineering and Architecture Zhejiang University of TechnologyHangzhou 310014China

To enhance the understanding about the utilization of steel slags as a cementitious material, we comparatively studied the chemical, mineralogical and morphological properties of two types of steel slag; basicoxygen-furnace carbon slag(BOF C) and electric-arc-furnace stainless steel slag(EAF S). Moreover, we studied the standard consistency, setting time and the effect of the slag replacement ratios on the fluidity and compressive strength of blended cement mortar. The experimental results showed that BOF C had higher alkalinity, higher pH value and more hydraulic phases than EAF S. Both types of slag showed water reduction effect due to its high fineness. Neat BOF C paste showed flash set and acceleration in the initial setting time of blended cement especially at high slag proportions. However, EAF S prolonged the setting time of blended cement even at low slag proportions. The pH values for blended cement contained 50% BOF C or EAF S were lower than those of pure cement paste. Despite of slag type, compressive strength gradually decreased with increasing slags content. The strength of BOF C mortar was higher than that of EAF S mortar with the same replacement ratio for the same age. Slag activity index demonstrated that BOF C and EAF S conformed to the Chinese National Standard(GB/T 20491-2006) requirements for steel slag as grade one and grade two, respectively.

关键词： steel slag stainless steel slag fluidity setting time compressive strength activity index

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低强度次声对成骨样细胞骨桥素和骨粘连蛋白mRNA表达的作用

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中国组织工程研究与临床康复 2007年第2期11卷 271-274页

作者：王斌陈景藻刘静郭国珍解放军第四军医大学西京医院康复医学与理疗学教研室陕西省西安市710032 解放军第四军医大学放射生物学教研室陕西省西安市710032

目的:观察不同频率低强度次声对成骨细胞细胞外基质骨桥素和骨粘连蛋白mRNA的影响。方法:实验于2005-09/11在解放军第四军医大学放射生物学教研室完成。采用4个6孔培养板进行小鼠成骨样细胞系MC3T3细胞的培养,设对照组,4,12,20 Hz组4组... 详细信息

目的:观察不同频率低强度次声对成骨细胞细胞外基质骨桥素和骨粘连蛋白mRNA的影响。方法:实验于2005-09/11在解放军第四军医大学放射生物学教研室完成。采用4个6孔培养板进行小鼠成骨样细胞系MC3T3细胞的培养,设对照组,4,12,20 Hz组4组。每日上午8时分别放入次声仓内,对照组在次声仓内无次声输出,4,12,20 Hz组接受100 dB,频率为4,12,20 Hz的次声作用30 min,1次/d,连续3d。在第3天次声作用后2,4,8h分别进行成骨样细胞骨桥素及骨粘连蛋白mRNA原位杂交染色,光学显微镜下进行图像分析,测定细胞阳性物质平均灰度,进行分析。结果:①骨粘连蛋白mRNA阳性表达:次声波作用后2,4h,4,12,20 Hz组高于对照组(2h:98.3±12.4,96.3±11.2,95.9±10.4,60.3±7.9;4h:103.7±12.4,90.9±11.7,85.4±11.6,62.7±7.1;P均0.05)。②骨桥素mRNA阳性表达:次声波作用后2,4h,4,12,20 Hz组高于对照组(2h:95.4±11.2,98.3±12.9,92.3±12.7,56.6±7.2;4h:91.5±13.6,94.7±10.2,87.6±11.7,58.6±6.8;P均0.05)。结论:100 dB次声波30 min/d作用能促进成骨细胞的骨桥素及骨粘连蛋白的表达一过性增高,在4,12,20 Hz不同频率间未观察到效应差别。

关键词：声学成骨细胞细胞骨架

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阿迪达斯放弃电视广告背后

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品质 2017年第4期 41-43页

作者： jz 磨盘

当许多公司还在与广告代理商因电视广告创意以及媒体投放争论不休的时候，运动品牌巨头阿迪达斯却宣布将放弃电视广告投放，转而在数字化渠道上寻求更多的可能。

关键词：电视广告阿迪达斯放弃广告代理商媒体投放广告创意广告投放运动品牌

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Stretchable and self-healing conductive fibers from hierarchical silver nanowires-assembled network

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Nano Research 2024年第2期17卷 763-770页

作者： Ying-Ying Wu Hong Chen Fan Zhang Pan guo Haili Qin Huai-Ping Cong Anhui Province Key Laboratory of Advanced Catalytic Materials and Reaction Engineering School of Chemistry and Chemical EngineeringHefei University of TechnologyHefei 230009China

Conductive fibers(CFs)with features of high conductivity,stretchability,self-healability,and electromechanical stability are key components of the increasingly popular wearable ***,since the lack of structural design of conductive network and interfacial interaction between soft polymer and conductive additives,it is still hard to enable CFs to meet above ***,we describe a facial drawing method from a hydrogel reservoir which is remolded into ultrathin and stretchable CFs with excellent multi-responsive *** hydrogel reservoir was fabricated in synergy of an ice-templating method and in situ polymerization using the assembled framework as a *** on the effective fabrication mechanism,the diameter of CFs could be well-tuned from 90 to 400μm by adjusting the dipping depth of the glass rod,accompanied with conductivity increased from 0.75 to 2.5 S/*** the hierarchical network structure was well maintained in the CFs,professional performances have been proved on the stretchability and electromechanical *** presence of massive hydrogen bonding and Ag–S bond enabled the CFs with excellent self-healability under the conditions of contact,electric field,and near infrared light,***,the CFs with high sensing property could be integrated into an advanced textile sensor through an effective healing-induced integration strategy,demonstrating its great potentials as superior two-dimensional(2D)electronic skins.

关键词： conductive fibers self-assembled silver nanowires Ag–S coordination self-healing flexible sensors

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High-entropy selenides: A new platform for highly selective oxidation of glycerol to formate and energy-saving hydrogen evolution in alkali-acid hybrid electrolytic cell

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Nano Research 2023年第8期16卷 10832-10839页

作者： Hu Yao Yibo Wang Yinan Zheng Xin Yu Junjie Ge Yonghong Zhu Xiaohui guo Key Lab of Synthetic and Natural Functional Molecule Chemistry of Ministry of Education The College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069China Changchun Institute of Applied Chemistry Changchun 130022China School of Chemical Engineering Northwest UniversityXi’an 710069China

Glycerol oxidation reaction(GOR)coupled with hydrogen generation simultaneously is a promising strategy for developing sustainable energy conversion technologies,but the complexity of glycerol oxidation products and the high coupling hydrogen evolution potential limit its wide *** this paper,a self-supported high-entropy selenide electrode can be fabricated via a simple hydrothermal ***,the prepared electrode as an advanced catalyst displays optimal catalytic activity(1.20 V at 10 mA·cm^(−2))and high selectivity for the formation of formate in *** results show that the lattice distortion effect of high entropy materials composed of multiple elements is mainly responsible for the greatly improved catalytic activity and selectivity for ***,an advanced alkali-acid hybrid electrolytic cell was assembled that enables efficient energy-saving hydrogen generation and GOR ***,the electrolyzer requires only 0.5 V applied voltage to reach 10 mA·cm^(−2) for hydrogen generation and maintains long-term operation stability.

关键词： high-entropy selenides lattice distortion glycerol oxidation reaction(GOR) formate activity

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The interventional effect of Polygonatum cyrtonema Hua polysaccharide on atherosclerosis in mice of different sexes

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Food Science and Human Wellness 2024年第1期13卷 370-380页

作者： Anjun guo Xueying Li Lihua Pan Qiangming Li Jianping Luo Xueqiang Zha Engineering Research Centre of Bioprocess of Ministry of Education Hefei University of TechnologyHefei 230009China School of Food and Biological Engineering Hefei University of TechnologyHefei 230009China Key Laboratory of Metabolism and Regulation for Major Disease of Anhui Higher Education Institutes Hefei University of TechnologyHefei 230009China

In the present study,we investigated the intervention effects of a purified Polygonatum cyrtonema polysaccharide(PCP)on high-fat diet(HFD)-induced atherosclerosis in male and female LDLr-/-*** showed that HFD caused severe dyslipidemia,atherosclerotic lesions,oxidative damages and inflammation in male and female mice,and these effects seemed to be more pronounced in males than in ***,the above variations could be dose-dependently reversed by PCP treatment,and the intervention effects on males were greater than those on *** factor kappa-B(NF-κB),mitogen-activated protein kinase(MAPKs)and protein kinase B(Akt)are 3 pivotal signaling pathways mediating the development of ***,PCP was also found to significantly decrease the phosphorylation of p65,p38,extracellular-regulated kinase 1/2(ERK1/2)and Akt,and increase the protein expression of inhibitor of NF-κB(IκB)in the aortas of male and female mice induced by *** together,these findings indicated that PCP could be effective for the prevention of atherosclerosis,and the intervention effect of PCP on male mice was more obvious than that of female mice.

关键词： Polygonatum cyrtonema polysaccharide Anti-atherosclerosis Sex

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将层次分析法用于联合多目标有无功分配

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电力自动化设备 1997年第21期17卷 145-164页

作者： Zhu,jz 韦东

本文提出了一种应用线性规划和层次分析法的全耦合有无功分配法。

关键词：电力系统联合有无功分配层次分析法线性规划

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Leveraging proficiency and preference for online Karaoke recommendation

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Frontiers of Computer Science 2020年第2期14卷 273-290页

作者： Ming HE Hao guo Guangyi LV Le WU Yong GE Enhong CHEN Haiping MA Anhui Province Key Laboratory of Big Data Analysis and Application University of Science and Technology of ChinaHefei 230027China School of Computer and Information Hefei University of TechnologyHefei 230026China Eller College of Management The University of ArizonaArizona 85721-0108USA iFlyTek Research Hefei 230026China

Recently,many online Karaoke(KTV)platforms have been released,where music lovers sing songs on these *** the meantime,the system automatically evaluates user proficiency according to their singing *** approximate songs to users can initialize singers5 participation and improve users,loyalty to these ***,this is not an easy task due to the unique characteristics of these ***,since users may be not achieving high scores evaluated by the system on their favorite songs,how to balance user preferences with user proficiency on singing for song recommendation is still ***,the sparsity of the user-song interaction behavior may greatly impact the recommendation *** solve the above two challenges,in this paper,we propose an informationfused song recommendation model by considering the unique characteristics of the singing ***,we first devise a pseudo-rating matrix by combing users’singing behavior and the system evaluations,thus users'preferences and proficiency are *** we mitigate the data sparsity problem by fusing users*and songs'rich information in the matrix factorization process of the pseudo-rating ***,extensive experimental results on a real-world dataset show the effectiveness of our proposed model.

关键词： KTV matrix factorization recommendation system

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Research status and prospect of wind-vehicle-bridge coupling vibration system

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Journal of Traffic and Transportation Engineering(English Edition) 2022年第3期9卷 319-338页

作者： Wanshui Han Xiaodong Liu Xuelian guo Shizhi Chen Gan Yang Huanju Liu School of Highway Chang'an UniversityXian 710064China Department of Civil and Environment Engineering University of CaliforniaLos AngelesCA 90015USA School of Civil Engineering Hebei University of EngineeringHandan 056038China

To promote and develop the theoretical basis and application of the wind-vehicle-bridge coupling vibration system,the corresponding research status and prospects are reviewed and discussed from five aspects,i.e.,the analytical framework,the aerodynamic interference,the evaluation criteria,the design loads of long-span bridge and the double-deck railcum-road *** refining process of analysis system is reviewed from the aspects of simulation wind load,vehicle load and bridge structure,and the corresponding coupling *** aerodynamic interference,the development process is summarized from the simulative precision of the elements(wind,vehicle and bridge),the load cases and the object of *** evaluation criteria,the corresponding development course is summarized from the certain evaluation method to uncertain *** long-span bridge design load,the wind and vehicle loads are reviewed and summarized from current multinational codes and theoretical *** double-deck rail-cum-road bridge,the mechanism of multi-element coupling relationship and corresponding aerodynamic interference are both *** comprehensive review and summary,the analytical framework is in the process from simplification to *** simulation and consideration of the objects of structural interference gradually become *** corresponding simulation theory,wind tunnel scale,test equipment and technology are the key factors to limit its *** systematic evaluation of vehicle and bridge,the structural and systemic security are the basis of the evaluation,and the auxiliary components and functional evaluation need to be paid more *** evaluation criterion will be developed from certain method to reliability *** design load of long-span bridge,the vehicle load is gradually transferred from the simple application of the design load of small-medium span bridge into a complex model considering the load *** doubl

关键词： Bridge engineering Wind-vehicle-bridge coupling vibration Aerodynamic interference Double-deck rail-cum-road bridge Design loads of long-span bridges Evaluation rule

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Interface Engineered Microcellular Magnetic Conductive Polyurethane Nanocomposite Foams for Electromagnetic Interference Shielding

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Nano-Micro Letters 2021年第10期13卷 131-146页

作者： guolong Sang Pei Xu Tong Yan Vignesh Murugadoss Nithesh Naik Yunsheng Ding Zhanhu guo Department of Polymer Science and Engineering School of Chemistry and Chemical Engineeringand Anhui Key Laboratory of Advanced Functional Materials and DevicesHefei University of TechnologyHefei 230009People’s Republic of China Advanced Materials Division Engineered Multifunctional Composites(EMC)Nanotech.LLCKnoxvilleTN 37934USA Integrated Composites Laboratory(ICL) Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA Department of Mechanical and Manufacturing Engineering Manipal Institute of TechnologyManipal Academy of Higher EducationManipalKarnataka 576104India

Lightweight microcellular polyurethane(TPU)/carbon nanotubes(CNTs)/nickel-coated CNTs(Ni@CNTs)/polymerizable ionic liquid copolymer(PIL)composite foams are prepared by non-solvent induced phase separation(NIPS).CNTs and Ni@CNTs modified by PIL provide more heterogeneous nucleation sites and inhibit the aggregation and combination of microcellular *** with TPU/CNTs,the TPU/CNTs/PIL and TPU/CNTs/Ni@CNTs/PIL composite foams with smaller microcellular structures have a high electromagnetic interference shielding effectiveness(EMI SE).The evaporate time regulates the microcellular structure,improves the conductive network of composite foams and reduces the microcellular size,which strengthens the multiple reflections of electromagnetic *** TPU/10CNTs/10Ni@CNTs/PIL foam exhibits slightly higher SE values(69.9 dB)compared with TPU/20CNTs/PIL foam(53.3 dB).The highest specific EMI SE of TPU/20CNTs/PIL and TPU/10CNTs/10Ni@CNTs/PIL reaches up to 187.2 and 211.5 dB/(g cm^(−3)),*** polarization losses caused by interfacial polarization between TPU substrates and conductive fillers,conduction loss caused by conductive network of fillers and magnetic loss caused by Ni@CNT synergistically attenuate the microwave energy.

关键词： Polyurethane Nanocomposites Microcellular Electromagnetic interference shielding

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