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Properties of a new type Al/Pb-0.3%Ag alloy composite anode for zinc electrowinning

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International Journal of Minerals,Metallurgy and Materials 2013年第10期20卷 986-993页

作者： hai-tao Yang Huan-rong Liu Yong-chun Zhang Bu-ming Chen Zhong-cheng Guo Rui-dong Xu Faculty of Metallurgical and Energy Engineering Kunming University of Science and Technology Faculty of Land Resource Engineering Kunming University of Science and Technology Kunming Hendera Science and Technology Co.Ltd. State Key Laboratory Breeding Base of Complex Nonferrous Metal Resources Cleaning Utilization

An A1/Pb-0.3%Ag alloy composite anode was produced via composite casting. Its electrocatalytic activity for the oxygen evolution reaction and corrosion resistance was evaluated by anodic polarization curves and accelerated corro- sion test, respectively. The microscopic morphologies of the anode section and anodic oxidation layer during accelerated corrosion test were obtained by scanning electron microscopy. It is found that the composite anode （hard anodizing） dis- plays a more compact interracial combination and a better adhesive strength than plating tin. Compared with industrial Pb-0.3%Ag anodes, the oxygen evolution overpotentials of A1/Pb-0.3%Ag alloy （hard anodizing） and A1/Pb-0.3%Ag alloy （plating tin） at 500 A.m-2 were lower by 57 and 14 mV, respectively. Furthermore, the corrosion rates of Pb-0.3%Ag alloy, A1/Pb-0.3%Ag alloy （hard anodizing）, and A1/Pb-0.3%Ag alloy （plating tin） were 13.977, 9.487, and 11.824 g.m-2.h-1, respectively, in accelerated corrosion test for 8 h at 2000 A-m-2. The anodic oxidation layer of A1/Pb-0.3%Ag alloy （hard anodizing） is more compact than Pb-0.3%Ag alloy and A1/Pb-0.3%Ag alloy （plating tin） after the test.

关键词： composite anodes corrosion resistance oxygen evolution reaction electrocatalytic activity zinc electrowin-ning

Antioxidant lignans sesamin and sesamolin in sesame(Sesamum indicum L.):a comprehensive review and future prospects

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Journal of Integrative Agriculture 2023年第1期22卷 14-30页

作者： Senouwa Segla Koffi DOSSOU XU Fang-tao Komivi DOSSA ZHOU rong ZHAO Ying-zhong WANG Lin-hai Oil Crops Research Institute Chinese Academy of Agricultural SciencesKey Laboratory of Biology and Genetic Improvement of Oil CropsMinistry of Agriculture and Rural AffairsWuhan 430062P.R.China Laboratory of Plant Biotechnology and Physiology University of LoméLome 01 BP 1515Togo French Agricultural Research Center for International Development(CIRAD) Genetic Improvement and Adaptation of Mediterranean and Tropical Plants-UMR AGAP InstituteMontpellier F-34398France UMR AGAP Institute University of MontpellierCIRADFrench National Research Institute for AgricultureFood and Environment(INRAE)Montpellier F-34398France

Sesame(Sesamum indicum L.)is a significantly lucrative cash crop for millions of small-holder *** seeds are an important source of a highly appreciated vegetable oil globally and two clinically essential antioxidant lignans,sesamin and ***,many countries import millions of tons of sesame seed every *** demand for lignan-rich sesame seeds has been increasing in recent years due to the continuous discovery of several pharmacological attributes of sesamin and *** meet this demand,the sesame breeder’s primary objective is to release sesame cultivars that are enriched in oil and ***,it is necessary to summarize the information related to the sesamin and sesamolin contents in sesame in order to promote the joint efforts of specialized research teams on this important oilseed *** this article,we present the current knowledge on the sesamin and sesamolin contents in *** *** respect to the updated biosynthesis pathway,associated markers,governing loci,available variability in sesame germplasm,the in planta potential roles of these compounds in sesame,and the newly discovered pharmacological *** addition,we propose and discuss some required studies that might facilitate genomics-assisted breeding of high lignan content sesame varieties.

关键词： Sesamum indicum lignan biosynthesis antioxidants molecular breeding sesamin and sesamolin

Control problems of an age-dependentpredator-prey system

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Applied Mathematics(A Journal of Chinese Universities) 2009年第3期24卷 253-262页

作者： HE Ze-rong WANG hai-tao Institute of Operational Research and Cybernetics,Hangzhou Dianzi University,Hangzhou 310018,China Institute of Operational Research and Cybernetics Hangzhou Dianzi University Hangzhou 310018 China

This paper is concerned with optimal harvesting problems for a system consisting oftwo populations with age-structure and interaction of predator-prey. Existence and uniquenessof non-negative solutions to the system and the continuous dependence of solutions on controlvariables are investigated. Existence of optimal policy is discussed, optimality conditions arederived by means of normal cone and adjoint system techniques.

关键词： predator-prey optimal control species age-structure maximum principle

A new aryltetrahydronaphthalene lignan from Epimedium brevicornum

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Chinese Chemical Letters 2011年第1期22卷 85-87页

作者： hai Zhou Li Guo Jun Luo Hong Mei Li Xiao Lei Li rong tao Li The college of Life Science and Technology Kunming University of Science and Technology Kunming 650224 China

A new aryltetrahydronaphthalene lignan, （＋）-cycloolivil formaldehyde condensate （1）, was isolated from the whole plants of Epimedium brevicornum （Berberidaceae）. Its structure was elucidated on the basis of MS,... 详细信息

关键词： Epimedium brevicornum Lignan Cycloolivil formaldehyde condensate

Spin-modulated near-infrared-Ⅰ emission in a xanthene-decorated Fe(Ⅱ) spin-crossover complex

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Science China Chemistry 2025年

作者： Cheng Yi Duyong Chen Shihui Zhang Rui Cai Chunying Duan Yinshan Meng tao Liu State Key Laboratory of Fine Chemicals Frontier Science Center for Smart Materials and Chemical Engineering School of Chemical Engineering Dalian University of Technology Instrumental Analysis Center Dalian University of Technology School of Chemistry Dalian University of Technology Liaoning Binhai Laboratory

Molecular materials showing synergetic coupling of near-infrared （NIR） fluorescence and spin-crossover （SCO） are promisingly applicable in in-vivo bioimaging,temperature sensing,and spintronic *** the related study faces formidable *** this work we graft the NIR fluorophore xanthene onto the dipyridyl substituted triazole ligand and construct a new Febased SCO material,{FeⅡ（ddxc-abpt）2[N（CN）2]2}(1,ddxc-abpt:（E）-4-(((3,5-di（pyridin-2-yl）-4H-1,2,4-triazol-4-yl)imino)methyl)-N,N-diethyl-2,3-dihydro-1H-xanthen-6-amine).Magnetic studies indicate that compound 1 exhibits thermally induced SCO property in both the solid and solution ***-temperature fluorescence emission spectra reveal a remarkable 7-fold increase in photoluminescence intensity upon the transition from the low-spin state at 110 K to the high-spin state at 280 K,which is the record of all reported coupled fluorescence-SCO ***-temperature ultraviolet-visible （UV-Vis）absorption spectra show a significant change in absorption intensity within the fluorescence emission window,consistent with the F?rster resonance energy transfer （FRET） ***-dependent density functional theory （TD-DFT） calculations demonstrate that the strong coupling is attributed to disrupted energy transfer between the xanthene fluorophore and high-spin *** work provides a feasible approach for expanding the synergetic SCO-fluorescence materials to the NIR-Iwavelength region,and hopefully contributes to the applications of tunable NIR-SCO molecule-based sensors and devices.

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RNA结合蛋白KHSRP激活JAK1/STAT3通路促进胃贲门腺癌的生长与转移

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中国药理学通报 2025年第1期41卷 71-80页

作者：王晓龙王梦瑶张海峰刘洋洋李丽韦海涛河南大学淮河医院胸外科河南开封475004 河南大学护理与健康学院河南开封475004

目的探讨KHSRP靶向调控JAK1/STAT3信号轴对胃贲门腺癌细胞迁移和侵袭等恶性生物学行为的影响。方法比较胃贲门腺癌组织和癌旁组织中KHSRP的表达水平。qRT-PCR法检测胃贲门腺癌细胞系(OE-19、TE-7、BIC-1、FLO-1、SK-GT-4、BE-3)与正常... 详细信息

目的探讨KHSRP靶向调控JAK1/STAT3信号轴对胃贲门腺癌细胞迁移和侵袭等恶性生物学行为的影响。方法比较胃贲门腺癌组织和癌旁组织中KHSRP的表达水平。qRT-PCR法检测胃贲门腺癌细胞系(OE-19、TE-7、BIC-1、FLO-1、SK-GT-4、BE-3)与正常胃黏膜上皮细胞系(GES-1)中KHSRP的表达差异。通过包装慢病毒载体对KHSRP进行敲降和过表达处理,分为sh-NC组、sh-KHSRP组和Vector组、KHSRP组。采用细胞计数试剂盒-8(CCK-8)、Transwell实验测定KHSRP对胃贲门腺癌细胞增殖、迁移和侵袭的影响。异种移植肿瘤模型检测敲降和过表达KHSRP在活体动物体内的作用。Western blot实验验证KHSRP靶向JAK/STAT信号通路。结果与邻近正常组织相比,KHSRP在GCA组织中的表达显著增高(P<0.05)。细胞功能实验分析显示,KHSRP过表达在体外显著促进GCA细胞增殖、迁移和侵袭(P<0.05)。在敲降KHSRP后,JAK/STAT信号通路中JAK1、STAT3磷酸化水平明显降低,过表达KHSRP后情况则反之(P<0.05)。结论KHSRP通过激活JAK1/STAT3信号轴调控胃贲门腺癌转移的恶性进程。

关键词：胃贲门腺癌 KHSRP JAK1/STAT3 恶性进展增殖侵袭迁移

Shielding of the geomagnetic field reduces hydrogen peroxide production in human neuroblastoma cell and inhibits the activity of CuZn superoxide dismutase

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Protein & Cell 2017年第7期8卷 527-537页

作者： hai-tao Zhang Zi-jian Zhang Wei-chuan Mo Ping-dong Hu hai-min Ding Ying Liu Qian Hua rong-qiao He State Key Laboratory of Brain and Cognitive Science Institute of Biophysics Chinese Academy of Sciences Beijing 100101 China University of Chinese Academy of Sciences Beijing 100049 China Institute of Beijing Chinese Traditional Medicine Beijing University of Chinese Medicine Beijing 100029 China CAS KeY Laboratory of Mental Health Institute of Psychology Beijing 100101 China

Accumulative evidence has shown the adverse effects of a geomagnetic field shielded condition, so called a hypomagnetic field （HMF）, on the metabolic processes and oxidative stress in animals and cells. However, the underlying mechanism remains unclear. In this study, we evaluate the role of HMF on the regulation of cellular reactive oxygen species （ROS） in human neuroblastoma SH-SY5Y cells. We found that HMF exposure led to ROS decrease, and that restoring the decrease by additional H2O2 rescued the HMF-enhanced cell proliferation. The measurements on ROS related indexes, including total anti-oxidant capacity, H2O2 and superoxide anion levels, and superoxide dismutase （SOD） activity and expres- sion, indicated that the HMF reduced H2O2 production and inhibited the activity of CuZn-SOD. Moreover, the HMF accelerated the denaturation of CuZn-SOD as well as enhanced aggregation of CuZn-SOD protein, in vitro. Our findings indicate that CuZn-SOD is able to response to the HMF stress and suggest it a mediator of the HMF effect.

关键词： hypomagnetic field reactive oxygenspecies hydrogen peroxide superoxide dismutase,oxidative stress

The evolution of microstructure and mechanical properties during high-speed direct-chill casting in different Al–Mg_2Si in situ composites

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International Journal of Minerals,Metallurgy and Materials 2018年第9期25卷 1080-1089页

作者： Dong-tao Wang hai-tao Zhang Lei Li hai-lin Wu Ke Qin Jian-zhong Cui Key Laboratory of Electromagnetic Processing of Materials Ministry of Education Northeastern University

The effect of high-speed direct-chill(DC) casting on the microstructure and mechanical properties of Al–Mg_2Si in situ composites and AA6061 alloy was investigated. The microstructural evolution of the Al–Mg_2Si composites and AA6061 alloy was examined by optical microscopy, field-emission scanning electron microscopy(FE-SEM) and transmission electron microscopy(TEM). The results revealed that an increase of the casting speed substantially refined the primary Mg_2Si particles(from 28 to 12 μm), the spacing of eutectic Mg_2Si(from 3 to 0.5 μm), and the grains of AA6061 alloy(from 102 to 22 μm). The morphology of the eutectic Mg_2Si transformed from lamellar to rod-like and fibrous with increasing casting speed. The tensile tests showed that the yield strength, tensile strength, and elongation improved at higher casting speeds because of refinement of the Mg_2Si phase and the grains in the Al–Mg_2Si composites and the AA6061 alloy. High-speed DC casting is demonstrated to be an effective method to improve the mechanical properties of Al–Mg_2Si composites and AA6061 alloy billets.

关键词： Al–Mg2Si in situ composite casting speed grain size primary Mg2Si mechanical property

The influence of plant root system architectural properties upon the stability of loess hillslopes,Northeast Qinghai,China

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Journal of Mountain Science 2016年第5期13卷 785-801页

作者： FU Jiang-tao HU Xia-song BRIERLEY Gary QIAO Na YU Qin-qin LU hai-jing LI Guo-rong ZHU hai-li Qinghai Institute of Salt Lakes Chinese Academy of SciencesXiningQinghai810008China University of ChineseAcademy of Sciences Beijing100049China Department of C-eological Engineering Oinghai UniversityXiningQinghai810016China School of Environment University of AucklandPrivate Bag 92019Auckland City 1142New Zealand

To investigate the influence of root system architectural properties of three indigenous （cold- adapted） shrubs on the hillslope stability of loess deposits in the Xining Basin, northeast part of Qinghai-Tibet Plateau （QTP）, indoor direct shear tests have been conducted on the remolded rooted soil of three shrubs. Test results show that root system architectural indices （root area ratio （RAR）, root length density （RLD） and root density （RD）） of the shrubs decline with depth and the relationship between RAR, RD and depth is exponential, while a power relationship describes the relationship between RLD and depth. The cohesion force of remolded rooted soil for the shrubs initially increases with depth, but it then demonstrates a slightly decreasing trend, which can be described with a power relationship. Power relationships also describe relationships between cohesion force and RAR, RLD and RD for the shrubs. As the growth period increases from lO to 17 months, the incremental increase in RAR is 48.32% ~ 21o.25% for Caragana korshinskii Kom and 0.56% ~ 166.85% for ZygophyUum xanthoxylon （Bunge） Maxim. This proportional increase is notably larger than that for RLD and RD. The increment in RAR is marginally greater for C. korshinskff than it is for Z. xanthoxylon. Correspondingly, the cohesion force incremental rates of remolded rooted soil for C. korshinskii and Z. xanthoxylon are 12.41% ~ 25.22% and 3.45% ~ 17.33% respectively. Meanwhile, as root content increases, the contribution by roots to cohesion force increases markedly until a threshold condition is reached.

关键词： Cold region Semiarid region Soil reinforcement Hillslope stability Root system architectural indices Plateau