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过氧化氢银离子复方消毒剂杀菌效果试验观察

中国消毒学杂志 2009年第3期26卷 274-276页

作者：薄玉霞王长德李书建刘吉起河南省疾病预防控制中心郑州450016 军事医学科学院疾病预防控制所

目的了解过氧化氢银离子复方消毒剂消毒相关性能。方法采用载体定性灭菌试验法,对该过氧化氢银离子复方消毒剂杀菌效果及稳定性进行了观察。结果以含100 g/L过氧化氢与109 mg/L的银离子复方消毒剂,对载体上枯草杆菌黑色变种芽孢作用90 m... 详细信息

目的了解过氧化氢银离子复方消毒剂消毒相关性能。方法采用载体定性灭菌试验法,对该过氧化氢银离子复方消毒剂杀菌效果及稳定性进行了观察。结果以含100 g/L过氧化氢与109 mg/L的银离子复方消毒剂,对载体上枯草杆菌黑色变种芽孢作用90 min,或对污染在止血钳齿端上的枯草杆菌黑色变种芽孢作用90 min,均可达到完全杀灭。将该复方消毒剂原液密封保存于37℃恒温箱中3个月,其过氧化氢及银离子含量平均下降率分别为4.98%和3.43%。结论过氧化氢银离子复方消毒剂对细菌芽孢均具有较强的杀灭效果,性能稳定。

关键词：过氧化氢银离子复方消毒剂枯草杆菌黑色变种芽孢杀菌效果

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红毛五加多糖的基本性质研究

天然产物研究与开发 2004年第6期16卷 507-510页

作者：陈永李强谭晓晶卢戌许晓燕辛俞杨波余彩霞孟延发四川大学生命科学学院成都610041

本文从红毛五加中分离得到了三种多糖 ,并对它们的基本性质进行了研究。红毛五加经热水浸提 ,用Sevag法脱蛋白 ,经DEAE cellulose 32离子交换层析和SephacrylS 2 0 0HR凝胶层析纯化得到三个主要多糖组分 :AHP I、AHP II和AHP III。HPLC... 详细信息

本文从红毛五加中分离得到了三种多糖 ,并对它们的基本性质进行了研究。红毛五加经热水浸提 ,用Sevag法脱蛋白 ,经DEAE cellulose 32离子交换层析和SephacrylS 2 0 0HR凝胶层析纯化得到三个主要多糖组分 :AHP I、AHP II和AHP III。HPLC测定AHP I、AHP II和AHP III的表观分子质量分别为 7.0kD、5 9.5kD和 12 .9kD。红外光谱分析三种多糖具有多糖类物质的一般特征。经纸层析和GC结果综合分析得知 ,AHP I含有阿拉伯糖、岩藻糖、甘露糖、葡萄糖、半乳糖 ,其摩尔比为 1.0 0∶1.4 0∶0 .6 4∶3.13∶2 .0 9;AHP II含有鼠李糖、阿拉伯糖、甘露糖、葡萄糖和半乳糖 ,其摩尔比为 0 .36∶1.0 0∶0 .15∶0 .2 0∶1.10 ;AHP III含有鼠李糖、阿拉伯糖、岩藻糖、甘露糖、葡萄糖和半乳糖 ,其摩尔比为 1.2 2∶1.0 0∶0 .4 0∶0 .2 8∶0 .2 6∶1.0 3。咔唑硫酸法测得AHP II、AHP III的糖醛酸含量分别为 6 .7%和 6 .0 % ;AHP I不含糖醛酸。体内试验表明 ,红毛五加粗多糖对小鼠S180 肉瘤有明显抑制作用。

关键词：半乳糖红毛五加多糖葡萄糖甘露糖 S180肉瘤糖醛酸 HPLC测定摩尔比鼠李糖硫酸法

Cu3(PO4)2: Novel Anion Convertor for Aqueous Dual‑Ion Battery

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Nano-Micro Letters 2021年第3期13卷 1-8页

作者： Haoxiang yu Chenchen Deng Huihui Yan Maoting xia Xikun Zhang Zhen‑bo Wang Jie Shu School of Materials Science and Chemical Engineering Ningbo UniversityNingbo 315211ZhejiangPeople’s Republic of China MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage School of Chemistry and Chemical EngineeringState Key Lab of Urban Water Resource and EnvironmentHarbin Institute of TechnologyHarbin 150001HeilongjiangPeople’s Republic of China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin 300071People’s Republic of China

Electrode materials which can reversibly react with anions are of interest for aqueous dual-ion ***,we propose a novel anion electrode,Cu3(PO4)2,for constructing an aqueous dual-ion *** Cu3(PO4)2 electrode can operate in a quasi-neutral condition and deliver a reversible capacity of 115.6 mAh g^−1 with a well-defined plateau at−0.17 V versus Ag/*** reaction mechanism shows that Cu3(PO4)2 decomposes into Cu2O and subsequently is converted into Cu during the initial discharge *** the following charge process,Cu is oxidized into *** suggests Cu3(PO4)2 reacts with OH−ions instead of PO43−ions after the initial discharge process and its potential thereby depends upon the OH−ions concentration in ***,an aqueous dual-ion cell is built by using pretreated Cu3(PO4)2 and Na0.44MnO2 as anode and cathode,*** cycling,OH−ions and Na^+ions in electrolyte can be stored and *** a cell can provide a discharge capacity of 52.6 mAh g^−1 with plateaus at 0.70 and 0.45 V,exhibiting the potential of *** work presents an available aqueous dual-ion cell and provides new insights into renewable energy storage and adjustment of the OH−ions concentration in aqueous buffer solution.

关键词： Dual-ion battery Aqueous electrolyte Cu3(PO4)2 Electrochemistry Three-electrode cell

An efficient parallel algorithm for DNS of buoyancy-driven turbulent flows

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Journal of Hydrodynamics 2019年第6期31卷 1159-1169页

作者： Yi-zhao Zhang Shu-ning xia yu-hong Dong bo-fu Wang Quan Zhou Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China

In this paper,an explicit low-storage simplified M-stage Runge-Kutta(SRK)scheme for high Reynolds-number incompressible flows is *** the SRK scheme,the Poisson equation is solved only once in the final substage of each time *** taking advantage of the SRK scheme and the advanced hybrid MPI+MPI model,we have developed an efficient parallel solver for buoyancy-driven turbulent *** spatial and temporal accuracies of the solver are validated with Taylor-Green vortex *** the RK and SRK schemes are implemented for the simulation of turbulent Rayleigh-Benard convection as well as Rayleigh-Taylor *** results show that the SRK scheme can save approximately 20%of the computation time.

关键词： Direct numerical simulation(DNS) parallel algorithm turbulent flows

Surface grain refinement mechanism of SMA490BW steel cross joints by ultrasonic impact treatment

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International Journal of Minerals,Metallurgy and Materials 2017年第4期24卷 410-414页

作者： bo-lin He Lei Xiong Ming-ming Jiang Ying-xia yu Li Li School of Mechanical & Electronic Engineering East China Jiaotong University Nanchang 330013 China

Ultrasonic impact treatment (UIT) is a postweld technique for improving the fatigue strength of welded joints. This technique makes use of ultrasonic vibration to impact and plastically deform a weld toe and can achieve surface grain refinement of the weld toe, which is considered as the main reason for the improvement of fatigue strength. In this paper, the microstructure of the surface of a treated weld toe was observed by metallographic microscopy and transmission electron microscopy (TEM). The results show that UIT could produce severe plastic deformation on the surface layer of the weld toe and the maximum depth of plastic deformation extended to approximately 260 μm beneath the treated surface. Repeated processing could exacerbate the plastic deformation on the surface layer, resulting in finer grains. We can conclude that the surface grain refinement mechanism of SMA490BW welded joints is related to the high density of dislocation tangles and dislocation walls. © 2017, University of Science and Technology Beijing and Springer-Verlag Berlin Heidelberg.

关键词： Grain size and shape High resolution transmission electron microscopy Joints (structural components) Plastic deformation Transmission electron microscopy Ultrasonic applications Ultrasonic effects Weathering steel Welding Welds

Magnetic records of heavy metal pollution in urban topsoil in Lanzhou,China

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Chinese Science Bulletin 2013年第3期58卷 384-395页

作者： WANG bo xia DunSheng yu Ye JIA Jia XU ShuJing Key Laboratory of West China's Environmental Systems(Ministry of Education) Lanzhou University Key Laboratory of Desert and Desertification Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences

This study is a systematic analysis of the magnetic characteristics and heavy metal elements in soil samples collected from Lanzhou City,*** 117 surface soil samples were measured to study the feasibility and effectiveness of environmental magnetism for evaluating heavy metal pollution in urban *** of the study indicate that low-coercivity magnetite dominates the magnetic properties in the *** high values of the soil magnetic mineral concentration parameters and low values of magnetic particle size parameters are distributed throughout the northern area of Xigu District,the industrial zones of the eastern section of Chengguan District and the districts of the narrow sections connecting Chengguan District and the other three districts;these parameters are fundamentally consistent with the distribution of the high values of the Pollution Load Index and Nemerow Pollution ***-quantitative studies which use the environmental magnetic method to monitor pollution of heavy metals(such as As,Cr,Cu,Ni,Pb,Zn,and Fe) have shown that when xlf≤35×10-8 m 3 kg-1,it is unpolluted;when 35≤xlf <150×10-8 m3 kg-1,it is moderately polluted to unpolluted;when 150≤xlf <365×10-8 m 3 kg-1,it is moderately polluted;when 365≤xlf <750×10-8 m3 kg-1,fd %<2.7 and ARM /SIRM<0.2×10-3m A-1,it is moderately to highly polluted;when xlf ≥750×10-8 m3 kg-1,xfd %<2.7 and xARM/SIRM<0.2×10-3m A-1,it is highly *** region of moderately to highly polluted distribution is caused by industry and vehicles,showing that the change of pollution in Lanzhou City bears the trend of "vehicle emission + industrial".

关键词：土壤重金属污染城市表层土壤环境磁学兰州市中国土壤样品污染指数污染负荷

Effect of annealing treatment on microstructure and mechanical properties of Al/Ni multilayer composites during accumulative roll bonding (ARB) process

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Journal of Iron and Steel Research International 2020年第1期27卷 96-104页

作者： Hui-wen Zhu Bao-yi yu Hao Zhang bo-ning yu Shu-ning Lv Li Zheng Run-xia Li School of Material Science and Engineering Shenyang University of TechnologyShenyang 110870LiaoningChina School of Mechanical Engineering Dongguan University of TechnologyDongguan 523808GuangdongChina

Al/Ni multilayer composites are produced by accumulative roll bonding process and then annealed with different temperatures and *** images,microstructure and mechanical properties of Al/Ni multilayer composites are *** for the macroscopic images,although there was an edge crack along the rolling direction at the third pass,the defect of composites was not serious and the forming quality of composites was relatively *** yield strength and elongation of Al/Ni multilayer composites are improved after the annealing treatment;however,with the increase in annealing temperature and time,the yield strength and ciongation of Al/Ni multilayer composites are *** the process of annealing treatment,aluminum atoms diffuse in the way of vacancy diffusion,which results in the formation of Al3Ni intermetallic phase at Al/Ni interface and Kirkendall void in the aluminum *** content of Al3Ni intermetallic phase and Kirkenckill void would increase with the increase in annealing temperature and time.

关键词： Al/Ni multilayer composite Accumulative roll bonding process Annealing treatment Interrnetallic phase

Updatable Identity-Based Hash Proof System Based on Lattices and Its Application to Leakage-Resilient Public-Key Encryption Schemes

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Journal of Computer Science & Technology 2018年第6期33卷 1243-1260页

作者： Qi-Qi Lai bo Yang Yong yu Zhe xia Yan-Wei Zhou yuan Chen School of Computer Science Shaanxi Normal University Xi'an 710119 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China School of Computer Science and Technology Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Integrated Services Networks Xidian University Xi'an 710071 China

Identity-based hash proof system is a basic and important primitive. Ittographic schemes and protocols that are secure against key-leakage attacks. In thisupdatable identity-based hash proof system, in which the related master secret keyis widely utilized to construct cryp-paper, we introduce the concept ofand the identity secret key can beupdated securely. Then, we instantiate this primitive based on lattices in the standard model. Moreover, we introduce anapplication of this new primitive by giving a generic construction of leakage-resilient public-key encryption schemes withanonymity. This construction can be considered as the integration of the bounded-retrieval model and the continual leakagemodel. Compared with the existing leakage-resilient schemes, our construction not only is more efficient but also can resistmuch more key leakage.

关键词： public-key encryption identity-based hash proof system lattice updatable leakage-resilience

Photodegradation of soluble microbial products(SMPs) from membrane bioreactor by GO-COOH/TiO2/Ag

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Journal of Environmental Sciences 2020年第2期32卷 292-300页

作者： Shuyan yu xia Huang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China

This study aimed to explore a new degradation method-photocatalysis technology to polish membrane bioreactor(MBR) effluent, using 2,6-di-tert-butylphenol(2,6-DTBP) as a model soluble microbial product(SMP).2,6-DTBP is one of the predominant SMPs in MBR effluent, which is refractory and difficult to *** study developed a novel carboxylated graphene oxide/titanium dioxide/silver(GO-COOH/TiO2/Ag) nanocomposite to photodegrade 2,***-COOH/TiO2/Ag was successfully synthesized, using L-cysteine as the linker bonding TiO2/Ag to *** structural, morphological and optical properties of the GO-COOH/TiO2/Ag nanocomposite were characterized using various *** to synergistic effects, the GO-COOH/TiO2/Ag nanocomposite exhibited enhanced photocatalytic degradation performance under solar light irradiation when compared to TiO2, Ag and *** remove 25 mg/L 2,6-DTBP, the reaction time for GOCOOH/TiO2/Ag was only 30 min, faster than the 90 min required for pure TiO2 or *** addition, the 200 mg/L GO-COOH/TiO2/Ag nanocomposite aqueous solution showed the best performance under solar light, with 99% removal of 2,*** enhanced capability is likely due to the surface plasmon resonance(SPR) effect contributed by Ag nanoparticles(NPs) doped onto the *** addition, GO-COOH had a high effective surface area, which assisted in degrading the 2,6-DTBP through improved *** stability study showed that the photocatalytic activity of the GO-COOH/TiO2/Ag was stable enough for recycling multiple *** effective degradation performance and excellent stability demonstrates that the GO-COOH/TiO2/Ag nanocomposite can be a promising photocatalyst in the field of effluent SMP photodegradation, which solves the problem of the difficult biodegradation of highly toxic 2,6-DTBP.

关键词： Soluble microbial products (SMPs) 2,6-Di-tert-butylphenol (2,6-DTBP) Carboxylated graphene oxide/titanium dioxide/silver (GO-COOH/TiO2/Ag) nanocomposite Photocatalysis technology