检索结果-南通市图书馆

Synthesis of bisphosphnates containing 1,2.3.triazoles via click chemistry

在线全文

cnki会议

学校读者我要写书评

暂无评论

Synthesis of bisphosphnates containing 1,2,3-triazoles via c...

中国化学会第2.届学术年会

作者： Xu Li 1 ,Diandian Ke 1 ,Xiaolan Chen 1,Zhibo Qu 1 ,Lingbo Qu 1,2.,Yufen Zhao 1 1 Department of Chemistry,Zhengzhou University,Key Laboratory of Organic Chemistry and chemical biology,Henan Province,Zhengzhou 450001 2.Chemistry and chemical {3. school,Henan University of technology, Zhengzhou 450001

＜正＞Nitrogen-containing bisphosphonic acids and their salts（N-BP）represent an important class of phosphorus compounds possessing a pyrophosphate-like chemical structure that confers a strong affinity for *** N-BP ... 详细信息

关键词： bisphosphonates 1,2.3.Triazole Ultrasound

纳米SiOx对微发泡乳胶材料热延伸性能影响的初步研究

在线全文

cnki会议

学校读者我要写书评

暂无评论

弹性体 2002年第3期12卷 33-35页

作者：刘东辉李星张健昆明理工大学生物工程与化学工程学院云南昆明650224

经过对纳米SiOx粒子进行表面改性分散处理后 ,将其以不同的比例添加到微发泡天然乳胶材料的配方中 ,按常规方法硫化后 ,制成微发泡片材样品。参照相应测试标准测试了各组试样的热延伸性能 ,并对结果进行了对比分析。得出以下结论 :纳米S... 详细信息

经过对纳米SiOx粒子进行表面改性分散处理后 ,将其以不同的比例添加到微发泡天然乳胶材料的配方中 ,按常规方法硫化后 ,制成微发泡片材样品。参照相应测试标准测试了各组试样的热延伸性能 ,并对结果进行了对比分析。得出以下结论 :纳米SiOx经充分分散后能有效地提高微发泡天然乳胶材料的热延伸性能。

关键词：纳米SiOx 微发泡乳胶热延伸性能影响天然乳胶

VLDL-R中配体结合重复序列的结合特性及结构分析

在线全文

学校读者我要写书评

暂无评论

华中科技大学学报（医学版） 2004年第5期33卷 526-530页

作者：刘志国屈伸宗义强邓耀祖冯宗忱武汉工业学院生物与化学工程系武汉430023 华中科技大学同济医学院基础医学院生物化学与分子生物学系武汉430030

目的　研究VLDL R中 8个配体结合重复序列 (ligand bindingrepeats ,LBR)在配体结合中的作用并探讨结合位点的结构。方法　采用基因缺失诱变方法 ,构建不同LBR缺失的VLDL R重组体。将其分别导入无LDL R功能性表达的ldl A7细胞。配体结... 详细信息

目的　研究VLDL R中 8个配体结合重复序列 (ligand bindingrepeats ,LBR)在配体结合中的作用并探讨结合位点的结构。方法　采用基因缺失诱变方法 ,构建不同LBR缺失的VLDL R重组体。将其分别导入无LDL R功能性表达的ldl A7细胞。配体结合实验观察转染细胞与荧光标记的VLDL、β VLDL的结合能力 ,并采用同源建模的方法预测受体N 端 3. 8个氨基酸的配体结合域的空间结构。结果　配体结合实验显示LBR1和LBR2.受体结合VLDL、β VLDL最为重要 ;LBR3.结合VLDL也有重要作用 ,但对结合 β VLDL无明显影响。模型显示受体N 端3. 8个氨基酸的配体结合域呈现弧形口袋样结构 ,前 3.LBR结构紧凑 ,呈棒状 ,负电荷相对集中 ,与功能特性吻合 ,LBR5与LBR6之间的连接区赋予口袋结构一定的伸缩性 ,适应配体大小的变化。结论　受体N 端的前 3.LBR含有与配体结合的位点。该区域特定的空间结构与理化特性是结合功能的重要基础。

关键词： VLDL 配体 LBR 受体结合吻合变方实验观察重复序列同源建模重组体

Controllable oxygen vacancies and morphology engineering:Ultra-high HER/OER activity under base–acid conditions and outstanding antibacterial properties

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2022年第8期31卷 639-651,I0017页

作者： Hongyao Xue Alan Meng Tongqing Yang zhenjiang Li Chunjun Chen College of Electromechanical engineering Qingdao University of Science and TechnologyQingdao 266061ShandongChina Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life science MOECollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266061ShandongChina Beijing National Laboratory for Molecular sciences CAS Key Laboratory of Colloid and Interface and ThermodynamicsCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of Sciences 2Beijing 100190China school of Chemistry and chemical {2. University of Chinese Academy of SciencesBejing 100049China

Introducing vacancy defects and unique morphology is an effective strategy to improve the catalytic performance of transition metal ***,precisely controlling the amount of vacancy defects remains ***,we propose a facile and efficient hydrothermal accompanying an annealing method to synthesize a series of Mn-doped CoO nanomaterials with controllable oxygen vacancies and unique *** oxygen vacancies amount can be precisely controlled by adjusting the Mndoping content and is positively correlated with catalytic *** was found that the oxygen vacancies amount can reach up to 3..2.over the Mn-doped CoO nanomaterials,resulting in ultra-high hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)catalytic activity(HER:2..6 and 3. m V at 10 m A cm^(-2.;OER:3.1 and 3.2.m V at 50 m A cm^(-2.)under both basic and acidic conditions,while reaching 10 m A cm^(-2. for an ultra-low cell voltage of only 1.52.V,which exceeds that of Pt/C/RuO_(2. and all reported non-noble metal oxide *** DFT calculations reveal oxygen vacancies can optimize H*and HOO*intermediates adsorption free energy,thus improving the HER and OER ***,the Mn-doped CoO with rich oxygen vacancies exhibits excellent antibacterial properties in vitro of *** work provides new ideas and methods for the rational design and precise control of vacancy defects in transition metal compounds and explores their potential application value in electrochemical water splitting and biomedical fields.

关键词： Oxygen vacancies Mn-doping HER OER Antibacterial

在线全文

学校读者我要写书评

暂无评论

高模量碳纤维表面双金属MOFs结构的构筑

中国有色金属学报 2024年第5期34卷 1636-1651页

作者：李淑君钱鑫张永刚朱雪张振江吴昊男蔡晨阳朱小龙宁波大学材料科学与化学工程学院宁波315211 中国科学院宁波材料技术与工程研究所碳纤维制备技术国家工程实验室宁波315201 宁波市计量测试研究院宁波新材料检验检测中心国家磁性材料产业计量测试中心宁波315048

经高温热处理制备得到的碳纤维具有高惰性表面结构,导致其与基体之间的润湿性较差。为了改善碳纤维与基体间的界面性能,本研究通过采用阴极电沉积法在高模量碳纤维表面原位生长金属有机框架(MOFs)材料,在纤维表面同时引入两种不同金属元... 详细信息

经高温热处理制备得到的碳纤维具有高惰性表面结构,导致其与基体之间的润湿性较差。为了改善碳纤维与基体间的界面性能,本研究通过采用阴极电沉积法在高模量碳纤维表面原位生长金属有机框架(MOFs)材料,在纤维表面同时引入两种不同金属元素,研究双金属MOFs的引入机制、形貌及其对性能的影响。结果表明:双金属MOFs材料呈一定取向的绣球状形貌,经退火后演变成疏松多孔结构,该结构可显著提高高模量碳纤维表面粗糙度及界面黏结性;双金属MOFs的成核与生长取决于金属还原性,还原性越强、MOF生长速率更快,且沉积量更高;双金属MOFs结构的引入使得纤维电阻率下降至0.05×10^(−5)Ω∙cm,导电性能提升,独特的三维多孔结构也赋予高模量碳纤维高温环境下优异的热稳定性。

关键词：碳纤维金属有机框架金属离子导电性表面粗糙镀

Synthesis and structure of polyoxometalate[H2.n]2.H6Ni2.o6P4O3.]·3.2.

在线全文

学校读者我要写书评

暂无评论

Synthesis and structure of polyoxometalate[H2en]2[H6Ni2Mo6P4...

第六届全国物理无机化学会议

作者： Yingying Sun,Jing Lu,Dacheng Li,Jianmin Dou Shandong Provincial Key Laboratory of chemical Energy Storage and Novel Cell technology, {2. of Chemistry and chemical engineering,Liaocheng University,Liaocheng 2.2.59

Polyoxometalates(POMs),as anionic transition-metal oxide clusters,bear many properties that make them attractive for applications in catalysis,biology,magnetism,optics and medicine[1,2..Polyoxometalate compound [H

关键词： Polyoxometalates Hydrothermal synthesis

Stochastic and upscaled analytical modeling of fines migration in porous media induced by low-salinity water injection

在线全文

cnki会议

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2020年第3期41卷 491-506页

作者： Yulong YANG Weifeng YUAN Jirui HOU zhenjiang YOU Jun LI Yang LIU Unconventional Petroleum Research Institute China University of PetroleumBeijing 102249China school of chemical {2. The University of QueenslandBrisbane QLD 4072Australia College of Petroleum engineering China University of PetroleumBeijing 102249China

Fines migration induced by injection of low-salinity water(LSW) into porous media can lead to severe pore plugging and consequent permeability reduction. The deepbed filtration(DBF) theory is used to model the aforementioned phenomenon, which allows us to predict the effluent concentration history and the distribution profile of entrapped particles. However, the previous models fail to consider the movement of the waterflood front. In this study, we derive a stochastic model for fines migration during LSW flooding, in which the Rankine-Hugoniot condition is used to calculate the concentration of detached particles behind and ahead of the moving water front. A downscaling procedure is developed to determine the evolution of pore-size distribution from the exact solution of a large-scale equation system. To validate the proposed model,the obtained exact solutions are used to treat the laboratory data of LSW flooding in artificial soil-packed columns. The tuning results show that the proposed model yields a considerably higher value of the coefficient of determination, compared with the previous models, indicating that the new model can successfully capture the effect of the moving water front on fines migration and precisely match the effluent history of the detached particles.

关键词： low-salinity water(LSW)flooding fines migration stochastic model downscaling porous media waterflooding front exact solution

A new approach of conditions on δ2.(Φ) for s-sparse recovery

在线全文

学校读者我要写书评

暂无评论

science china(Information sciences) 2014年第4期57卷 107-113页

作者： CEN YiGang ZHAO RuiZhen MIAO zhenjiang CEN LiHui CUI LiHong school of Computer & Information technology Beijing Jiaotong University school of Information science and {2. Central South University Key Laboratory of System Control and Information Processing Ministry of Education Department of Mathematics Beijing University of Chemical Technology

In this paper,we provide a unified expression to obtain the conditions on the restricted isometry constantδ2.(Φ).These conditions cover the important results proposed by Candes et *** each of them is a sufficient condition for sparse signal *** the noiseless case,whenδ2.(Φ)satisfies any one of these conditions,the s-sparse signal can be exactly recovered via(l1)constrained minimization.

关键词： concentration of mutilated vector in kerΦ s-largest mutilated vector restricted isometry constant δ2.(Φ) exact recovery of s-sparse signals via(l1) maximum value of single variable function

An Amperometric Immunosensor for α-fetoprotein Based on Antibody Coated Nano ZrO2.Au-poly Lysine Composite Membrane Modified Electrode

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

An Amperometric Immunosensor for α-fetoprotein Based on Ant...

2.10 First International Conference on Cellular,Molecular biology, Biophysics and Bioengineering(CMBB 2.10)

作者： Yuanzhao Wu Futao Hu Ning Gan Jianguo Hou Tianhua Li Yuting Cao Lei Zheng Faculty of Materials science and chemical {2. Ningbo University Ningbo 3.52.1 {3.

One novel amperometric immunosensor for α-fetop- rotein was fabricated which was modified by antibody immobilized on nano ZrO2.Au-polyLysine composite membrane. Firstly, the deoxyribonucleic acid –phenoxyacetic acid isoniazid- Schiff base Co（II） complex （DNA-CoL） mixture film was casted on surface of multi carbon nanotubes（MWCNTs） modified glassy carbon electrode（GCE/CNTs/DNA-CoL）. Then the composite nanoparticles （ZrO2.Au-pLL） was employed to immobilize the antibody of α-fetoprotein（AFP） to produce the probes（ZrO2.Au- pLL-anti AFP） for AFP. Finally the probes were modified on GCE/CNTs/DNA-CoL through the specific connection between DNA and ZrO2.to form a novel nanocomposite membrane immunosensor for AFP（GCE/CNTs/ DNA-CoL/ZrO2.Au–pLL- anti AFP）. The function of immunosensor was investigated by scanning electron microscopy （SEM）, cyclic voltammetry（CV）, differential pulse voltammety （DPV） and electrochemical impedance spectroscopy experiment （EIS）. The results indicated that combining the advantages of the MWNTs-DNA material and ZrO2.Au-pLL-anti AFP nano probes, the immunosensor with excellent sensitivity and selectivity to AFP was prepared successfully. The modified electrode was sensitive to AFP with a linear relationship between 0.05 and 10 ng · mL-1 and a correl- ation coefficient of 0.9905. The detection limit at a signal to noise ratio of 3.was 0.01 ng·mL-1 under the optimal conditions. The described immunosensor preparation and immunoassay methods offer promise for simple and cost-effective analysis of AFP in serum samples.

关键词： cyclic voltammetry (CV) zirconium dioxide nanoparticles gold colloid poly-Lysine (pLL) α-fetoprotein (AFP)