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Effect of PCEs with Different Functional Groups on the Performance of Cement Paste

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Journal of Wuhan University of Technology(Materials Science) 2019年第5期34卷 1163-1169页

作者： HE Yan[[ ZHANG Xiong wang Yiting KONG Yaning JI Tao SHUI Liangliang wang Xiaofu wang haoren School of Civil Engineering Suzhou University of Science and TechnologySuzhou 215011China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Green Building Materials China Building Materials AcademyBeijing 100024China Key Laboratory of Advanced Civil Engineering Materials of Education Ministry Tongji UniversityShanghai 201804China School of Architecture and Engineering Nanjing Institute of TechnologyNanjing 211167China Shanghai Municipal Engineering Design Institute(Group)Co. Ltd.Shanghai 200092China

The adsorption behaviors and dispersing properties of polycarboxylate superplasticizer(PCE) with different functional groups were systematically analyzed to reveal the theory and methods of modifying PCE molecular structures and regulating PCE performances. By substituting carboxylic groups with sulfonic groups, ester groups or acylamino groups, respectively, modified PCEs with different functional groups were synthesized. Results show that introducing low amount of ester groups or sulfonic groups into the PCE molecules has no negative effects on the fluidity of cement paste, while introducing acylamino groups into PCE molecules significantly weakens the fluidity of cement paste. At low amount(when the molar ratio of sodium methallyl sulfonate to TPEG is lower than 0.4), the rapid adsorption of sulfonic groups onto the cement particles contributes to the high dispersing performance of the sulfonic group modified PCEs. When the substitution ratio of acrylic acid by sulfonic acid is higher than 0.4, the viscosity and the yield stress of cement paste increases sharply. Redundant sulfonic groups lead to the excessive charge density of the PCE, which contributes to the inhomogeneous adsorption on the cement grains and hence results in the decline of the dispersing performance. Substitution of carboxylic group by acylamino group or ester group slightly changes the viscosity as well as the yield stress of cement paste. Introducing sulfonic group into PCE molecule improves the adsorption behavior of PCEs, while introducing ester group or acylamino group into PCE depresses the adsorption properties.

关键词： polycarboxylate superplasticizer functional group adsorption behavior rheological properties cement hydration

Influence of Initial Water Content on Synthesis of Silicalite-1 Zeolite

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China Petroleum Processing & Petrochemical Technology 2017年第4期19卷 11-19页

作者： Zhang Honghan Zhang Shanhe wang haoren Li Chunyi State Key Laboratory of Heavy Oil Processing China University of Petroleum Qingdao 266580

The effect of initial water content on the synthesis of silicalite-1 zeolite and its reaction performance in methanol to propylene(MTP) reaction was comprehensively investigated. The as-synthesized samples were characterized by XRD,N_2 adsorption and desorption, SEM, and FTIR techniques, and studied for the methanol to propylene(MTP) reaction. The results showed that the initial water content played a crucial role on the particle size and porous structure of the silicalite-1 zeolites. It was found that adding initial water to reach a certain amount, the crystal size reduced obviously and the mesoporous structure appeared. Upon applying the silicalite-1 zeolite samples in the MTP reaction, they showed excellent catalytic performance to reach a highest propene mass yield of 26.81%(on the CH_2 basis) and a P/E ratio of 6.28 in 2 h. The excellent catalytic performance of silicalite-1 can be attributed to its mesoporous structure.

关键词： initial water content hierarchical pore silicalite-1 MTP

基于表型聚类和CDDP标记的牡丹花瓣色斑遗传多样性分析

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西北农林科技大学学报（自然科学版） 2024年第5期52卷 110-123页

作者：罗莎李冰洁付雅琪孔晨杨佳维高星赵婷婷王浩任张延龙史倩倩西北农林科技大学风景园林艺术学院陕西杨凌712100

【目的】采用色斑表型性状分析和保守DNA序列多态性(conserved DNA-derived polymorphism,CDDP)分子标记技术相结合的方法,揭示牡丹花瓣基部色斑的遗传起源。【方法】利用19个色斑表型性状和CDDP分子标记对191份牡丹材料的花瓣色斑进行... 详细信息

【目的】采用色斑表型性状分析和保守DNA序列多态性(conserved DNA-derived polymorphism,CDDP)分子标记技术相结合的方法,揭示牡丹花瓣基部色斑的遗传起源。【方法】利用19个色斑表型性状和CDDP分子标记对191份牡丹材料的花瓣色斑进行遗传多样性分析,利用Origin软件进行表型性状变异分析和系统聚类,采用PopGene 2.4软件计算分子标记多样性指数和多态性位点率等,利用NTSYS软件非加权组平均法(UPGMA)绘制聚类树状图,并进行一致检测和Mantel检测。【结果】牡丹色斑表型变异分析结果表明:牡丹花瓣色斑性状发生了强变异,尤其是色斑颜色变异系数较大。表型性状聚类结果显示,紫斑牡丹与其他种或品种牡丹交集较多,且与西北牡丹品种关系最为密切。利用17条CDDP引物扩增191份牡丹材料的花瓣DNA,共扩增出401条条带,多态性位点率达到96.91%。在色斑群体水平上,有效等位基因数为1.3759,Nei’s基因多样性指数为0.2122,Shannon-Wiener信息指数为0.3324,说明牡丹花瓣色斑在分子水平上具有丰富的遗传多样性。聚类结果显示,紫斑牡丹和卵叶牡丹、四川牡丹聚在一起,三者亲缘关系较近,紫斑牡丹对现有牡丹栽培品种的色斑性状产生了较大影响,可能是牡丹品种色斑的主要来源。将表型性状聚类和CDDP分子标记聚类的遗传矩阵进行Mantel检验,得出相关系数为0.55,表明两种聚类结果有相似之处,均能很好地体现牡丹花瓣色斑的遗传来源。【结论】紫斑牡丹是牡丹品种色斑的主要来源,卵叶牡丹和四川牡丹也对牡丹品种色斑的形成有影响。

关键词：牡丹花瓣色斑表型性状 CDDP标记遗传多样性

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基于建筑垃圾成因分析的设计策略研究——选材、构材、营材

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华中建筑 2024年第1期42卷 31-35页

作者：王浩任李璐浙江大学建筑工程学院

近年来,由于我国高速城市化发展和大规模的建造活动,导致大量建筑垃圾产生,已对自然环境造成严重的负面影响。过去几年,政府推行了一系列有关建筑垃圾减量化的政策,但实际效果并不明显。本研究以垃圾减量化为目标,着眼于国内建筑垃圾排... 详细信息

近年来,由于我国高速城市化发展和大规模的建造活动,导致大量建筑垃圾产生,已对自然环境造成严重的负面影响。过去几年,政府推行了一系列有关建筑垃圾减量化的政策,但实际效果并不明显。本研究以垃圾减量化为目标,着眼于国内建筑垃圾排放现状,分析成因,通过文献研究与案例分析,梳理概括出“选材、构材、营材”三方面建筑设计策略,以期为建筑垃圾减量化的可持续发展目标提供参考。

关键词：建筑垃圾减量化建筑设计可持续建筑优化策略

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Positioning Tropical Cyclone Center in a Single Satellite Image Using Vector Field Analysis

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Positioning Tropical Cyclone Center in a Single Satellite Im...

2013年中国智能自动化学术会议

作者： Jinfeng Yang haoren wang Tianjin Key Lab for Advanced Signal Processing Civil Aviation University of China

Tropical cyclone(TC) center location or eye fix is the first and inevitable procedure in TC forecasting,but mostly done manually in *** we present a novel and objective method to locate TC center by compensating conventional pattern matching and vector field analysis methods *** experimental results show satisfactory results in comparison with the best track data from the China Meteorological Administration especially when the spiral patterns of TC are well *** method being introduced,TC forecasters can fix TC eye objectively and easily from data of all kinds of meteorological satellites.

关键词： Typhoon Location Ridge Gradient field Equiangular Spiral

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秦岭报春花属种质资源及其利用研究进展

中国农学通报 2024年第16期40卷 89-95页

作者：高星赵婷婷钟乐源杨佳维王浩任沈晶月史倩倩西北农林科技大学风景园林艺术学院陕西杨凌712100

文章总结了秦岭报春花属植物种质资源种类及分布特征,理清了秦岭报春花属植物系统发育关系,基于繁殖技术、栽培适应性、新品种选育和药用价值相关研究进展,针对性地提出“就地保护为主,迁地保护为辅”的秦岭报春花属植物种质资源开发利... 详细信息

文章总结了秦岭报春花属植物种质资源种类及分布特征,理清了秦岭报春花属植物系统发育关系,基于繁殖技术、栽培适应性、新品种选育和药用价值相关研究进展,针对性地提出“就地保护为主,迁地保护为辅”的秦岭报春花属植物种质资源开发利用原则。以加深和拓宽理论研究为基准,以推动新品种改良为重点,致力于推动野生报春花属植物在城市园林绿地中的应用和产业化生产,进而丰富城市绿地景观构成、提高人居环境质量和人类福祉,并为秦岭报春花属种质资源的应用研究提供科学参考。

关键词：秦岭报春花属种质资源育种利用前景

Study on Reservoir Geological Characteristics and Potential Damage Mechanism of FIOC Oilfield in Sargiz

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Open Journal of Yangtze Oil and Gas 2020年第1期5卷 26-34页

作者： Dichen Tan Zhu Zhu Huaiyuan Long Song wang haoren wang College of Chemistry and Environmental Engineering Yangtze University Jingzhou China Sinopec Four Machines and Seiwa Co. Ltd. Jingzhou China

With the in-depth development of the Sargiz oilfield in Kazakhstan, oil layer protection plays an extremely important role in the development process. The petrological characteristics and pore types of the reservoir were analyzed by X-ray diffraction and electron microscopy. The average face ratio of the reservoir was 19.30%. The main pore type was intergranular pore and the face rate was 17.52%. The total amount of clay minerals in the reservoir core is 7% - 10%, and the clay minerals are mainly illite, Yimeng, kaolinite and chlorite;the shale content of the main oil-bearing layer is about 3% - 10%. Refer to relevant industry standards for speed, water, stress, acid, and alkali sensitivity experiments to study the potential damage mechanism of the reservoir. According to the above experiments, the oilfield reservoirs have no speed-sensitive damage and are weakly water-sensitive reservoirs;the reservoirs are highly stress-sensitive and easy to produce sand when the stress changes;they have moderately weak acid sensitivity and weak-medium weak alkaline.

关键词： Sargizblock Petrological Characteristics Pore Characteristics Damage Mechanism Analysis

p-n异质结型光催化剂BiOBr/NaBiO_3的制备与可见光催化活性

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高等学校化学学报 2014年第10期35卷 2170-2176页

作者：姬磊王浩人于瑞敏东北石油大学化学化工学院石油与天然气化工省高校重点实验室大庆163318

采用化学蚀刻法在NaBiO3表面利用HBr与NaBiO3的反应原位沉积BiOBr,制备了异质结型光催化剂.利用X射线粉末衍射仪(XRD)、紫外-可见漫反射光谱仪(UV-Vis DRS)和扫描电子显微镜(SEM)等对其相结构、微观形貌和光吸收性能进行了表征.光催化... 详细信息

采用化学蚀刻法在NaBiO3表面利用HBr与NaBiO3的反应原位沉积BiOBr,制备了异质结型光催化剂.利用X射线粉末衍射仪(XRD)、紫外-可见漫反射光谱仪(UV-Vis DRS)和扫描电子显微镜(SEM)等对其相结构、微观形貌和光吸收性能进行了表征.光催化实验结果表明,BiOBr/NaBiO3在可见光下可以有效降解罗丹明B(RhB)溶液,当BiOBr与NaBiO3的摩尔比为40.1%时,BiOBr/NaBiO3具有最大催化活性.通过不同牺牲剂的加入及荧光实验结果推测了该异质结型材料光催化过程中光生载流子的传输方向及活性物种.研究结果表明,BiOBr/NaBiO3催化活性的增强主要归结为两者之间形成了有效的异质结,其内建电场能够促进光生载流子的分离,同时h+在光催化降解过程中是主要的活性物种.

关键词：光催化 BiOBr/NaBiO3 异质结

Fatigue Analysis of Truck Frame Using Virtual Proving Ground

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Fatigue Analysis of Truck Frame Using Virtual Proving Ground