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Anti-corrosive, weatherproof and self-healing polyurethane developed from hydrogenated hydroxyl-terminated polybutadiene toward surface-protective applications

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Frontiers of Materials Science 2022年第2期16卷 153-165页

作者： Yuanyuan LIU Xin DU Hui WANG Yu YUAN Liuhe WEI xingjiang LIU Ailing SUN Yuhan LI College of Chemistry and Green Catalysis Center Zhengzhou UniversityZhengzhou 450001China Zhengzhou Key Laboratory of Elastic Sealing Materials Zhengzhou 450001China

Self-healing polyurethane(PU)faces aging deterioration due to active dynamic bonds,which remain a challenging predicament for practical *** this work,a novel strategy is developed to address this predicament by leveraging the hydrophobicity and gas barrier of hydrogenated hydroxyl-terminated polybutadiene(HHPB).The dynamic oxime-carbamate bonds derived from 2,4-pentanedione dioxime(PDO)enable the elastomer to exhibit surface self-repairability upon applied mild heat and achieve~99.5%mechanical self-healing *** mechanical properties remained nearly intact after 30-d exposure to thermal oxidation,xenon lamp,acids,bases,and *** permeability,positron annihilation lifetime spectroscopy(PALS),and contact angle measurements reveal the pivotal role of gas barrier,free volume,and hydrophobicity in blocking undesirable molecules and ions which effectively protects the elastomer from ***-PU also exhibits excellent adhesion to steel *** shear strength achieves(3.02±0.42)MPa after heating at 80°C for 4 h,and(3.06±0.2)MPa after heating at 130°C for 0.5 *** its outstanding anti-corrosive and weatherproof performances,this self-healable elastomer is a promising candidate in surface-protective applications.

关键词： hydrogenated hydroxyl-terminated polybutadiene hydrophobicity anti-aging performance self-healing surface protection

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安顺西秀区露地黑皮冬瓜地膜覆盖栽培技术

长江蔬菜 2024年第5期 36-39页

作者：黄兴江张玉波姜兰熊汝华赵开智安顺市西秀区农业农村局良种场贵州安顺550800 安顺市西秀区蔬菜产业发展办公室贵州安顺550800 安顺学院农学院安顺市西秀区茶叶产业发展办公室安顺市西秀区农业农村局土肥站安顺市西秀区农业技术推广站安顺市西秀区农业农村局教育培训科安顺市西秀区农业农村局植保站安顺市西秀区农业农村局特色产业科

近年来安顺西秀区黑皮冬瓜种植大户逐年增加,2023年栽培面积133.33 hm^(2)以上,栽培面积不断扩大,但栽培技术参差不齐,栽培区域主要分布在海拔1200~1400 m。为提高冬瓜栽培技术,增加冬瓜产量和种植户收入,促进乡村振兴,对露地黑皮冬瓜... 详细信息

近年来安顺西秀区黑皮冬瓜种植大户逐年增加,2023年栽培面积133.33 hm^(2)以上,栽培面积不断扩大,但栽培技术参差不齐,栽培区域主要分布在海拔1200~1400 m。为提高冬瓜栽培技术,增加冬瓜产量和种植户收入,促进乡村振兴,对露地黑皮冬瓜地膜覆盖栽培技术要点进行总结,为冬瓜种植户及农业技术人员提供技术支撑及参考。

关键词：黑皮冬瓜地膜覆盖栽培技术

杨梅种质资源遗传多样性分析与DNA指纹图谱构建

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分子植物育种 2024年第5期22卷 1488-1500页

作者：张淑文俞浙萍孙鹂梁森苗郑锡良颜丽菊黄颖宏戚行江浙江省农业科学院园艺研究所农产品质量安全危害因子与风险防控国家重点实验室杭州310021 湘湖实验室杭州311231 临海市特产技术推广总站临海317000 江苏省太湖常绿果树技术推广中心苏州215107

为了分析杨梅种质资源遗传多样性,揭示不同种质间的亲缘关系,利于杨梅种质的高效鉴定、利用及保护,本研究利用20对InDel引物开展了83份杨梅种质资源的遗传多样性分析,并构建了杨梅种质资源DNA指纹图谱。结果表明,20对InDel引物共检测到... 详细信息

为了分析杨梅种质资源遗传多样性,揭示不同种质间的亲缘关系,利于杨梅种质的高效鉴定、利用及保护,本研究利用20对InDel引物开展了83份杨梅种质资源的遗传多样性分析,并构建了杨梅种质资源DNA指纹图谱。结果表明,20对InDel引物共检测到110个等位基因,平均每对引物5.50个,平均有效等位基因4.31个,Nei’s遗传多样性指数0.34,Shannon’s指数1.42,平均多态信息含量0.29,平均标记指数1.60。83份杨梅种质资源可分为3组(包含6个亚组),其中,A组为浙江北部沿海与江苏种质群,B组为浙中部地区种质群,C组为浙西南与福建种质群,浙江杨梅种质进化对应了浙江地形变化,推测浙江杨梅种质进化受地形的自然选择作用明显。根据引物的多态信息含量和标记指数进一步简化引物的使用量,筛选出9对核心InDel引物,构建了83份杨梅种质资源的DNA指纹图谱,为标准化构建杨梅DNA分子身份证库提供基础,同时为杨梅种质资源的科学利用及有效保护提供一定依据。

关键词：杨梅种质资源 InDel引物遗传多样性 DNA指纹图谱

Study　on　Optimal　Dispatching　Model　for　Multilake－Reservoir　System　of　Kaidu－Kongque　River　and　Tarim　River^（12）

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Systems Science and Systems Engineering 1994年第4期4卷 351-356页

作者： MEI Shengwei ZHANG Huaxiao and QI Wenhua(Department of mathsmatics,xingjiang University, Urimqi, xingjiang,830046,P.R.China)HAN Xiankun LU Xinsheng(Administration of Bainguolen water resource,Kurle,xingjiang,830000,P.R.China)

In this paper, the optimal dispatching model for multilake-reservoir system of KaiduKongque River and Tarim river is studied with mathematical *** optimal dispatching models belong to large system theory,which considers both wator supply and the effect of science and technology. The computation results shows that the model is feasible.

关键词： optimal dispatching discharge reservoir storage

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非常规超导材料电子结构和超导机制研究

中国基础科学 2023年第1期25卷 26-36,45页

作者：赵林郭静袁洁田焕芳任治安金士锋刘清青赵继民郑萍冯世平陈伟强周放李建奇孙力玲周兴江北京凝聚态物理国家研究中心中国科学院物理研究所北京100190 北京师范大学物理学系北京100875 南方科技大学物理系深圳518055

非常规超导体的超导机制是凝聚态物理领域的核心科学问题,明确其超导机制对发展新的量子固体理论、探索新的超导体和超导应用具有重要意义。超导展现的宏观量子现象由其微观的电子结构决定,因此超导材料电子结构的研究对理解超导机制具... 详细信息

非常规超导体的超导机制是凝聚态物理领域的核心科学问题,明确其超导机制对发展新的量子固体理论、探索新的超导体和超导应用具有重要意义。超导展现的宏观量子现象由其微观的电子结构决定,因此超导材料电子结构的研究对理解超导机制具有重要作用。从非常规超导材料的制备与物性研究入手,利用超高压极低温强磁场综合物性研究平台、球差校正高分辨透射显微技术、真空紫外激光角分辨光电子能谱技术等,结合强关联电子系统相关理论,系统研究非常规超导材料的电子结构和超导电性,结果发现一系列新的超导体,揭示许多实验原理,为理解非常规超导材料的超导机制提供了重要依据。

关键词：非常规超导超导机制高压球差校正高分辨透射显微技术真空紫外激光角分辨光电子能谱

Effectiveness and safety of Suxiao Jiuxin pill in treating acute coronary syndrome:a systematic review and Meta-analysis

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Journal of Traditional Chinese Medicine 2020年第4期40卷 518-529页

作者： Liu Chao Duan Lian Huang Mingyan Li Jun Xiong xingjiang Chen Guang He Haoqiang Zhang Zhenpeng Wang Jie Department of Cardiology Guang'anmen HospitalChina Academy of Chinese Medical SciencesBeijing 100053China Graduate School Beijing University of Chinese MedicineBeijing 100029China

OBJECTIVE:To evaluate the effectiveness and safety of Suxiao Jiuxin pill(SX)in acute coronary syndrome(ACS)***:An extensive search of four English databases(Medline/PubMed,Cochrane Library,Embase,and World Health Organization International Clinical Trials Registration Platform)and four Chinese databases(Chinese National Knowledge Infrastructure,Wanfang,China Science and Technology Journal,and Chinese Biomedical Literature Service System)was ***,controlled trials(RCTs)involving SX combined with conventional therapy versus conventional therapy were *** extracted data included populations,interventions,outcomes,and risk of *** cardiovascular events served as the primary *** Manager 5.3 software was used for data *** risks(RRs)with 95%confidence intervals(CIs)were the effect ***:A total of eight RCTs with 979 patients were *** were 559 patients with unstable angina(UA)in six RCTs and 420 patients with acute myocardial infarction(AMI)in two *** review showed that SX plus conventional therapy might reduce the incidence of the total endpoint(RR:0.34,95%CI:0.17,0.68,P=0.002),with no obvious adverse events(RR:1.29,95%CI:0.60,2.77,P=0.52)compared with conventional therapy for patients with ***,SX plus conventional therapy also reduced the incidence of the total endpoint(RR:0.35,95%CI:0.18,0.68,P=0.002)compared with conventional therapy in patients with *** plus conventional therapy also reduced the incidence of ventricular fibrillation(RR:0.23,95%CI:0.10,0.57,P=0.001)compared with conventional therapy in patients with ***:Our results suggest that SX is beneficial for treating patients with UA or ***,our findings should be treated with caution because of the poor methodological quality of the included ***,more multicenter,large-sample,high-quality RCTs are required to provide high-quality evidence.

关键词： Acute coronary syndrome Angina,unstable Myocardial infarction Endpoint Determination Meta-analysis Suxiao Jiuxin pill

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杨梅老树种质群体遗传结构的WGS分析

园艺学报 2024年第10期51卷 2267-2280页

作者：张淑文梁森苗俞浙萍孙鹂叶海萍胡晓金颜丽菊吴玉勇应铮峥郑锡良戚行江农产品质量安全危害因子与风险防控国家重点实验室浙江省农业科学院园艺研究所杭州310021 湘湖实验室杭州311231 台州市黄岩区果树技术推广总站浙江黄岩318026 靖州县农业农村局湖南靖州418400 仙居县特产技术推广中心浙江仙居317300 临海市特产技术推广总站浙江临海317000

基于全基因组重测序技术(whole genome sequencing,WGS),挖掘覆盖杨梅全基因组的SNP,明确杨梅基因组SNP的分布特点,并开展36份杨梅老树种质的群体遗传结构分析。由36份杨梅老树种质共获得高质量测序数据398.26 Gb,测序深度为37.34×,平... 详细信息

基于全基因组重测序技术(whole genome sequencing,WGS),挖掘覆盖杨梅全基因组的SNP,明确杨梅基因组SNP的分布特点,并开展36份杨梅老树种质的群体遗传结构分析。由36份杨梅老树种质共获得高质量测序数据398.26 Gb,测序深度为37.34×,平均GC含量为38.57%,Q30为97.56%。共检测到5362434个SNP位点,1~8号染色体的SNP数量在655299~897575之间,共包含16个SNP变异惰性区域,总长度为9.45 Mb。邻接法进化树分析,36份种质可聚为3个群体,云南腾冲的6份种质聚为群体Ⅰ,与其他种质亲缘关系较远;湖南靖州的4份种质聚为群体Ⅱ;其余26份种质聚类为群体Ⅲ,其中浙江黄岩与仙居种质亲缘关系最近,以‘东魁’为主。群体连锁不平衡(LD)分析发现,云南腾冲种群LD衰减速率最快,浙江黄岩种群体次之,浙江慈溪种群最慢。对浙江黄岩(‘东魁’)、慈溪(‘荸荠种’)进行群体间遗传分化指数(Fst)分析,群体间差异显著的基因功能以抗逆性、次生代谢、植株形态建成等为主,进而形成这两个品种的表型差异。群体结构分析发现,福建、湖南靖州、湖北来凤等种群均包含了浙江仙居种质的遗传背景,且在湖南靖州种群中也发现了浙江仙居种群的杂交信号,表明近百年来,浙江仙居杨梅种质对福建、湖南、湖北等地栽培品种的形成影响较大。

关键词：杨梅全基因组 SNP 资源群体进化群体结构

Adsorption and diffusion of oxygen on metal surfaces studied by first-principle study:A review

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Journal of Materials Science & Technology 2021年第3期62卷 180-194页

作者： Hairui Xing Ping Hu Shilei Li Yegai Zuo Jiayu Han xingjiang Hua Kuaishe Wang Fan Yang Pengfa Feng Tian Chang School of Metallurgy Engineering Xi’an University of Architecture and TechnologyXi’an 710055China National and Local Joint Engineering Research Center for Functional Materials Processing Xi’an University of Architecture and TechnologyXi’an 710055China Jinduicheng Molybdenum Co. Ltd.Xi’an710077China Northwest Institute for Non-ferrous Metal Research Xi’an710016China

First-principle calculations,especially by the density functio nal theory(DFT),is used to study the structure and properties of oxygen/metal *** of oxygen molecules or atoms on metal surfaces plays a key role in surface science and *** review is dedicated to the adsorption of oxygen molecules or atoms on metal surfaces and diffusion behavior from first-principle *** hope that this review can provide some useful contributions to understa nd the study of adsorption properties and diffusion behavior on a metal surface at an atomic-scale,especially for those interested in catalytic oxidation and application of corrosion.

关键词： First-principle calculations Density functional theory Oxygen Adsorption Diffusion Metal surfaces

Depolarization of Li-rich Mn-based oxide via electrochemically active Prussian blue interface providing superior rate capability

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Carbon Energy 2023年第5期5卷 48-56页

作者： Youchen Hao Xifei Li Wen Liu Jingjing Wang Hui Shan Wenbin Li xingjiang Liu Liangxu Lin Xianyou Wang Xueliang Sun Shaanxi International Joint Research Centre of Surface Technology for Energy Storage Materials Xi'an Key Laboratory of New Energy Materials and DevicesInstitute of Advanced Electrochemical Energy&School of Materials Science and EngineeringXi'an University of TechnologyXi'anChina Science and Technology on Power Sources Laboratory Tianjin Institute of Power SourcesTianjinPR China Strait Institute of Flexible Electronics(SIFE Future Technologies)Fujian Normal UniversityFuzhouFuzhouChina Key Laboratory of Environmentally Friendly Chemistry and Applications of Ministry of Education School of ChemistryXiangtan UniversityXiangtanHunanChina Department of Mechanical and Materials Engineering University of Western OntarioLondonOntarioCanada

The high-rate cyclability of Li-rich Mn-based oxide(LMO)is highly limited by the electrochemical polarization resulting from the slow kinetic of the Li2MnO3 ***,the Prussian blue(PB)coating layer with specific redox potential is introduced as a functionalized interface to overcome the side effect and the escaping of O on the surface of LMO,especially its poor rate *** detail,the PB layer can restrict the large polarization of LMO by sharing overloaded current at a high rate due to the synchronous redox of PB and ***,an enhanced high rate performance with capacity retention of 87.8%over 300 cycles is obtained,which is superior to 50.5%of the pristine *** strategies on the high-rate cyclability of Li-rich Mn-based oxide compatible with good low-rate performances may attract great attention for pursuing durable performances.

关键词： Li-rich Mn-based oxide Prussian blue coating layer synchronous redox high-rate cyclability