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水淬钢渣混凝土应力-应变全曲线试验研究

建筑结构学报 2019年第8期40卷 163-169页

作者：李斌力乙鹏王晨霞曹芙波内蒙古科技大学土木工程学院

对6组尺寸为150mm×150mm×300mm的棱柱体试件进行单轴受压试验,研究了钢渣细骨料替代率和设计强度等级两个因素对钢渣混凝土的棱柱体强度、峰值应变、极限应变、弹性模量、泊松比以及应力-应变关系的影响.结果表明:钢渣细骨料替代率为... 详细信息

对6组尺寸为150mm×150mm×300mm的棱柱体试件进行单轴受压试验,研究了钢渣细骨料替代率和设计强度等级两个因素对钢渣混凝土的棱柱体强度、峰值应变、极限应变、弹性模量、泊松比以及应力-应变关系的影响.结果表明:钢渣细骨料替代率为60%时,钢渣混凝土强度最高,性能最好;弹性模量随着钢渣细骨料替代率的增大而增大,但增大幅度逐渐减小;混凝土强度相同时,其极限应变随钢渣细骨料的掺量增大而减小.通过线性回归得到了钢渣混凝土的峰值应变与替代率、抗压强度的关系式,取代率不同的钢渣混凝土的泊松比在受力过程中差异较大.对无量纲化应力-应变全曲线拟合,拟合结果与实测结果吻合较好.

关键词：水淬钢渣混凝土钢渣细骨料替代率单轴受压试验峰值应变弹性模量泊松比应力-应变全曲线

Luminescent Properties of Europium Complexes with Different Long Chains in Langmuir-Blodgett (LB) Films

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Engineering（科研） 2011年第4期3卷 301-311页

作者： Tiesheng li Wei Shang Fuli Zhang Luyuan Mao Caiqin Tang Maoping Song chenxia Du Yangjie Wu Department of Chemistry Henan Key Laboratory of Chemical Biology and Organic Chemistry The Key and Open Lab of Applicated Chemistry of Zhengzhou Universities Zhengzhou China Key Lab of Advanced Information Nano-Materials of Zhengzhou Zhengzhou University Zhengzhou China Institute of Materials and Engineering Zhengzhou University Zhengzhou China

A series of europium(III) complexes with different chain length, tris [2-m-pyridylmethanamido-5-phenyl- (1,3,4)-oxadiazole] mono [2-(4-n-alkylphenyl)-iminazole (4,5-f)-1,10-phenanthroline] Eu(III) [Eu(PMA)3Nn (n = 6, 10, 14,18)] were synthesized. All of these amphiphilic europium(III) complexes could form stable Langmuir film at air/water interface and could be transferred onto hydrophilic quartz and mica substrates by measurement of UV spectra in which the absorbance of the LB films at about 288 nm scales showed the linearity with the number of layers deposited. In order to investigate relation between fluorescence properties and the arrangement of molecular in LB films, surface topography of monolayer films were observed by atomic force microscopy (AFM). Results showed that the emission spectra have Eu(III) characteristic peaks and strong emission strength. It is interesting that the molecular with looser arrangement in LB films has better monochromacity, which illustrated that energy might transferred more easily from ligand to Eu(III) in loosen structure films.

关键词： Europium Complex LB Films Photo-Luminescence AFM

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产业用纺织品跨领域技术融合演化分析

丝绸 2023年第8期60卷 28-37页

作者：李凌宇虎陈霞徐茜中国计量大学经济与管理学院杭州310018

技术融合为产业技术升级提供了新思路,然而对于技术融合的研究往往忽略了产业用纺织品领域。文章基于“重点产业专利信息服务平台”的专利数据,结合社会网络与链路预测方法,对产业用纺织品领域的技术融合现状、未来发展热点与趋势进行... 详细信息

技术融合为产业技术升级提供了新思路,然而对于技术融合的研究往往忽略了产业用纺织品领域。文章基于“重点产业专利信息服务平台”的专利数据,结合社会网络与链路预测方法,对产业用纺织品领域的技术融合现状、未来发展热点与趋势进行深入研究。结果表明:跨领域技术融合在产业用纺织品领域内的应用日益广泛,并主要集中在作业与运输、纺织与造纸及固定建筑物三大领域,其中分离、制作化学长丝、线、纤维、鬃或带子的机械方法或设备等技术在技术融合过程中扮演重要角色;纤维材料在航空航天等领域的应用与高品质非织造布、土木建筑用纺织品的应用是未来值得关注的方向。

关键词：技术融合产业用纺织品社会网络链路预测重点产业专利信息服务平台结构洞

NHC-Catalyzed Three-Component Domino Reaction of Bromoenals with Oxindoles: Diastereoselective Assembly of Spirooxindole 4H-Pran-2-Ones

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NHC-Catalyzed Three-Component Domino Reaction of Bromoenals ...

中国化学会第十四届全国有机合成化学学术研讨会

作者： Yong Hu Baomin Sun chenxia Yu Tuanjie li Shujiang Tu Changsheng Yao School of Chemistry and Materials Science Jiangsu Normal University

Spirooxindoles are frequently present as important cores in large amounts of natural products,pharmaceutically relevant synthetic compounds with highly biological activities. As a novel class of spirooxindoles, only a few investigations have been focused on the syntheses and bioactivities of spirooxindole 4H-pyran-2-ones. N-heterocyclic carbene(NHC)catalysis has been used as a powerful tool for a large number of untypical chemical transformations. Among these conversions,α,β-unsaturated acyl azoliums have emerged as fascinating1,3-biselectrophile synthons with unique and unprecedented chemistry that were pioneered by Zeitler in 2006. The well-explored reactions involved NHC-mediated formal[3+3]annulations ofα,β-unsaturated acyl azoliums with various 1,3-bisnucleophiles to afford functionalized dihydropyranones and dihydropyridinones. However,to the best of our knowledge,the three-component domino reaction of bromoenals are rarely *** continuation of our studies on the exploration of NHC-catalyzed annulations for the synthesis of diverse heterocyclic systems, we shall herein report that oxindoles serve as 1,1-bisnucleophiles to undergo three-component domino reaction,which provides a new access to spirooxindole 4H-pyran-2-ones.

关键词： spirooxindoles N-heterocyclic carbenes α,β-unsaturated acyl azloliums

Critical steps in the production of oil from oilseed to reduce heterocyclic aromatic amines

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Food Quality and Safety 2023年第4期7卷 588-596页

作者：张晨霞李梦乐马玮玮马宇翔汪学德刘华敏 College of Food Science and Engineering Henan University of TechnologyZhengzhouChina

Contamination by the heterocyclic aromatic amines(HAAs)norharman and harman is one of the risks in vegetable oil production,so oil producers strive to decrease their content in the end *** this study,the effects of production conditions—specifically,two pretreatment methods(roasting and microwaving),four extraction methods(two pressing and two solvent extraction)and adsorption refining(four absorbents)—of five oils(flaxseed,peanut,rapeseed,sesame,and sunflower seed)were *** results showed that microwaving as a pretreatment produced significantly fewer HAAs than roasting(Plication in the oil production process to obtain safe final products.

关键词： Heterocyclic aromatic amines norharman harman oils reduction strategies

N-Heterocyclic Carbene-Catalyzed[4+2]Cyclization of α-bromo-enal with 3-alkylenyloxindoles:an efficient synthesis of spirocyclic oxindoles

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N-Heterocyclic Carbene-Catalyzed[4+2]Cyclization of α-bromo...

中国化学会全国第十一届有机合成化学学术研讨会

作者： Yuanwei Xie Zhaoxin Xiao Tuanjie li Rui liu chenxia Yu Changsheng Yao School of Chemistry and Chemical Engineering Jiangsu Normal University

N-heterocyclic carbene(NHC) catalyzed reactions have emerged as an particularly fruitful area of research in organic chemistry. Due to the unique "Umpolung" in organic synthesis,umpoluping the aldehydes to acyl nucleophiles has become an important way to synthesis of heterocyclic compounds in current research. Spirooxindole cores are interesting and important structures found in many bioactive natural products,and the functionalized six-membered spirooxindole core structure is featured in many natural products as well as medicinally relevant compounds. Herein we shall report our preliminary results of an NHC-catalyzed reaction of 2-bromo-2-enal bearing γ-H with 3-alkylenyloxindoles,which may give the desired spirocarbocyclic oxindoles with potential bioactivity.

关键词： NHC spirocyclic oxindole α-bromo-enal 3-alkylenyloxindole

阳离子—π相互作用—[K（DB18C6）]2[M（SCN）4]（M=Pd,Pt）

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化学学报 2001年第6期59卷 918-924页

作者：窦建民刘颖等聊城师范学院化学系，聊城252000 复旦大学分析测试中心，上海200433

合成了二苯并18冠6与Pd,Pt生成的新颖配合物：[K(DB18C6)][Pd(SCN)4](1),[K(DB18C6)]2[Pt(SCN)4](2)，并通过元素分析、红外光谱、单晶X射线衍射进行了表征。两个配合物均为三斜晶系，空间群P－1．1的晶体学数据：α=0.87375(17)nm,b=1.... 详细信息

合成了二苯并18冠6与Pd,Pt生成的新颖配合物：[K(DB18C6)][Pd(SCN)4](1),[K(DB18C6)]2[Pt(SCN)4](2)，并通过元素分析、红外光谱、单晶X射线衍射进行了表征。两个配合物均为三斜晶系，空间群P－1．1的晶体学数据：α=0.87375(17)nm,b=1.1990(2)nm,c=1.3180(3)nm,α-73.56(3)°,β=99.90(3)°,γ=82.34(3)°,V=1.2986(4)nm^3,Z=1,F(000)=584,R1=0.075,wR2=0.166 0.2的晶体学数据：α=0.855(3)5nm,b-1.3127(3)nm,c=1.181 9(3)nm,α=106.21(2)°,β=82.77(3)°,γ=99.72(3)°，V=12.51 6(8)nm^3,Z=1,F(000)=818,R1=0.0254,wR2=0.068 2.1,2均由两个[K(DB18C6)]^+配离子和一个[M(SCN)4]^2-配阴离子组成。在固态、配合物两个分子的[K(DB18C6) ] ^+和[M(SCN)4]^2-通过K^+-π相互作用形成假一维无限链状结构。

关键词：阳离子-π相互作用二苯并18冠 6 钯铂配合物晶体结构合成

A Stereoselective Assembly of Dihydropyranone through NHC/liCl-catalyzed in situ Activation of α,β-Unsaturated Carboxylic

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A Stereoselective Assembly of Dihydropyranone through NHC/Li...

中国化学会第九届全国有机化学学术会议

作者： Yonglei Que chenxia Yu Tuanjie li Xiang-Shan Wang Shide Shen Changsheng Yao Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional Materials School of Chemistry and Chemical EngineeringJiangsu Normal University Xuzhou Institute of Architectural Technology

＜正＞The carboxylic acids are readily available,more stable compared with enal and the functionalized aldehydes includingα-aryloxy acetal aldehydes and halogenated aldehydes employed previously in NHC-catalyzed ***,they are less liable to generate enolate than ketones and activated esters,which may avoid some side reactions such as Aldol reaction and Michael reaction.

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An NHC-catalyzed Oxidative γ-Aminoalkylation of Saturated Carboxylic Acids through in situ Activation Strategy:A New Access to δ-Lactam

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An NHC-catalyzed Oxidative γ-Aminoalkylation of Saturated C...

中国化学会第九届全国有机化学学术会议

作者： Yonglei Que Yuanwei Xie Tuanjie li chenxia Yu Shujiang Tu Changsheng Yao School of Chemistry and Chemical Engineering Jiangsu Key Laboratory of Green Synthetic Chemistry for Functional MaterialsJiangsu Normal University

Carboxylic acids y are less liable to enolize than ketone and activated esters,which may avoid the occurrence of the side reaction including aldol condensation,Michael addition and Claisen *** noticeable advantages make the carboxylic acids ideal starting materials for organic synthesis and considerable attention has been focused on their organocatalytic transformations.

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