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Wheat breeding in northern China: Achievements and technical advances

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The Crop Journal 2019年第6期7卷 718-729页

作者： Hongjie Li Yang Zhou wenli xin Yiqin Wei Junling Zhang Lilei Guo The National Engineering Laboratory of Crop Molecular Breeding Institute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Institute of Crop Breeding Heilongjiang Academy of Agricultural SciencesHarbin 150086HeilongjiangChina Institute of Crop Research Ningxia Academy of Agricultural and Forestry SciencesYinchuan 750100NingxiaChina Institute of Foxtail Millet Shanxi Academy of Agricultural SciencesChangzhi 046000ShanxiChina National Agricultural Technology Extension and Service Center Beijing 100125China

Common wheat is the major cereal crop that underpins the food safety of China. Both winter wheat and spring wheat are grown on ~24 million ha. This review aims to summarize the current status of wheat production and breeding progress in the northern wheat production areas of the country, and to review recently advanced technologies being applied in wheat breeding, including the use of dwarf-male-sterile(DMS) wheat, speed breeding and specialized wheat breeding SNP chips. Crossing is the initial step in most breeding programs. DMS wheat is a convenient tool for large scale production of hybrid seed. Speed breeding or accelerated generation turnover attempts to reduce the time taken in cultivar development. Several different SNP chips are high-throughput, genome-wide genotyping platforms for breeding and research.

关键词： Common wheat Dwarf male sterile wheat Speed breeding SNP chips Triticum aestivum

Molecular engineering of self-assembled monolayers for highly utilized Zn anodes

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eScience 2024年第2期4卷 70-79页

作者： Lei Zhang Jin Xiao Xilin Xiao wenli xin Yaheng Geng Zichao Yan Zhiqiang Zhu State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China Greater Bay Area Institute for Innovation Hunan UniversityGuangzhou 511300China School of Science Hunan University of TechnologyZhuzhou 412007China

Stabilizing the Zn anode under high utilization rates is highly applauded yet very challenging in aqueous Zn ***,we rationally design a zincophilic short-chain aromatic molecule,4-mercaptopyridine(4Mpy),to construct self-assembled monolayers(SAMs)on a copper substrate to achieve highly utilized Zn *** reveal that 4Mpy could be firmly bound on the Cu substrate via Cu–S bond to form compact and uniform SAMs,which could effectively isolate the water on the electrode surface and thus eliminate the water-related side *** addition,the short-chain aromatic ring structure of 4Mpy could not only ensure the ordered arrangement of zincophilic pyridine N but also facilitate charge transfer,thus enabling uniform and rapid Zn ***,the Zn/4Mpy/Cu electrode not only enables the symmetric cell to stably cycle for over 180 h at 10 mA cm^(-2) under a high depth-of-discharge of 90%,but also allows the MnO_(2)-paired pouch cell to survive for 100 cycles under a high Zn utilization rate of 78.8%.An anode-free 4Mpy/Cu||graphite cell also operates for 150 cycles without obvious capacity fading at 0.1 A g^(-1).This control of interfacial chemistry via SAMs to achieve high utilization rates of metal anodes provides a new paradigm for developing high-energy metal-based batteries.

关键词： Zn anodes Interfacial engineering Self-assembled monolayers Zincophilic aromatic molecules High utilization

Corrosion Performance of Zinc and Zinc-cobalt Alloy Compositionally Modulated Multilayer (CMM) Coatings

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Journal of Wuhan University of Technology(Materials Science) 2006年第4期21卷 40-44页

作者：费敬银 Department of Applied Chemistry Science CollegeNorthwestern Polytechnical University Xi'an 710072China

Varieties of zinc and Zn-Co alloy compositionally modulated multilayer （CMM） coatings were electrodeposited onto steel substrates using dual bath technique. The surface and cross-sectional morphologies of coated samples were examined using scanning electron microscopy （ SEM ）. The existence of iuternal stress in ZnCo alloy deposits was confirmed by the cross-sectional morphalogies for the occurrence of micro-cracks in the thick Zn-Co alloy deposit alone. The corrosion performance was evaluated using neutral salt spray testing, corrosion potential measurement and anodic polarization methods. The experimental results slum, that the zinc and Zn- Co alloy CMM coatings were more corrosion-resistant than the monolithic coatings of zinc or Zn-Co alloy alone with a similar thickness. The analysis on the micrographic features of zinc and Zn-Co alloy CMM coatings, using field emission gun scanning electron microscopy （FEGSEM） after corrosion testing, explains the probable reusons why the Zn-Co/ Zn CMM coating system has a better protective performance.

关键词： corrosion resistance Zn-Co alloy composhionally modulated multilayer coating

N-Heterocycles Extended π-Conjugation Enables Ultrahigh Capacity,Long-Lived,and Fast-Charging Organic Cathodes for Aqueous Zinc Batteries

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CCS Chemistry 2023年第8期5卷 1789-1801页

作者： Huiling Peng Jin Xiao Zhonghan Wu Lei Zhang Yaheng Geng wenli xin Junwei Li Zichao Yan Kai Zhang Zhiqiang Zhu State Key Laboratory of Chemo/Biosensing and Chemometrics College of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082 School of Science Hunan University of TechnologyZhuzhou 412007 Frontiers Science Center for New Organic Matter Renewable Energy Conversion and Storage Center(RECAST)Key Laboratory of Advanced Energy Materials ChemistryMinistry of EducationCollege of ChemistryNankai UniversityTianjin 300071

The aqueous zinc-organic battery is a promising candidate for large-scale energy ***,the rational design of advanced organic cathodes with high capacity,long lifespan,and high rate capability remains a big ***,we propose that extending theπ-conjugation by N-heterocycles can provide more active sites,lead to insolubility,and facilitate charge transfer,thus boosting the overall electrochemical performance of organic *** on this concept,a novel organic compound,dipyrido[3ʹ,2ʹ:5,6;2″,3″:7,8]quinoxalino[2,3-i]dipyrido[3,2-a:2ʹ,3ʹ-c]phenazine-10,21-dione(DQDPD),has been rationally designed and evaluated as the cathode for aqueous zinc ***,DQDPD shows a record high capacity(509 mAh g^(−1) at 0.1 A g^(−1),corresponding to a record-breaking energy density of 348 Wh kg^(−1)),excellent cycling stability(92%capacity retention after 7500 cycles at 10 A g^(−1)),and fast-charging capability(161 mAh g^(−1) at 20 A g^(−1)).Our work offers new ideas in the molecular engineering of organic electrodes for high-performance rechargeable batteries.

关键词： aqueous zinc batteries organic cathodes H^(+)/Zn^(2+)coinsertion N-heterocycles extendedπ-conjugation

Electrodeposition of Compositionally Modulated Zinc-cobalt Alloy Multilayer Coatings

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Chinese Journal of Chemical Engineering 2005年第2期13卷 259-265页

作者：费敬银梁国正辛文利 Department of Chemical Engineering Northwestern Polytechnical University Xi'an 710072 China

The effects of pulse parameters on the cobalt content, surface morphologies and grain size of Zn-Co alloy deposits were studied using a pulse plating technique with a square-wave current containing reverse pulse. Average current density and reverse anodic current density amongst the variables investigated have very strong effects on the cobalt content in the Zn-Co alloy deposits. Grain size, surface appearance and internal stress in the deposit were improved significantly by introducing the reverse current. Varieties of Zn-Co alloy compositionally modulated multilayer (CMM) coatings with large differences in cobalt contents for different sublayers were electrodeposited by designing corresponding waveforms using a computer-aided pulse plater and characterized in terms of surface morphologies. Cross-sectional morphologies of the Zn-Co alloy CMM coatings, examined using field emission gun scanning electron microscopy (FEGSEM), confirmed the layered structure.

关键词： zinc-cobalt alloy electrodeposition composltionally modulated multilayer coating

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飞机起落架应力腐蚀断裂及预防措施

热加工工艺 2011年第4期40卷 186-189页

作者：王磊费敬银辛文利西北工业大学理学院陕西西安710129

讨论了飞机起落架应力腐蚀断裂的特征、断裂机理及其影响因素,并从选材、消减应力、表面保护和日常维护等方面提出了控制起落架应力腐蚀断裂的措施。

关键词：高强度钢应力腐蚀断裂起落架腐蚀失效

新型数控机床伺服系统驱动元件──电涡流快速离合器

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成都科技大学学报 1996年第2期 80-83页

作者：忻文丽卢取义杜立晓成都科技大学机械工程系

本文介绍一种数控机床伺服新一代驱动元件，它是在电磁快速离合器、电涡流离合器二者的基础上取长补短结合研制的一种新型电涡流快速离合器，它用于数控机床伺服系统中，构成了新一代伺服系统．

关键词：电涡流离合器伺服系统数控机床驱动元件

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新型数控机床电涡流伺服系统

成都科技大学学报 1996年第1期 72-74,102页

作者：忻文丽陈玉华杜立晓程红铃成都科技大学机械工程系

本文介绍一种新型数控机床电涡流伺服系统，它是以电涡流快速离合器作为驱动元件，具有正转、反转、制动功能，构成了新一代伺服系统，它克服了现有伺服系统中一些固有缺点，如低频振荡、零位抖动等，因而具有很多特点：力矩大、反应速... 详细信息

本文介绍一种新型数控机床电涡流伺服系统，它是以电涡流快速离合器作为驱动元件，具有正转、反转、制动功能，构成了新一代伺服系统，它克服了现有伺服系统中一些固有缺点，如低频振荡、零位抖动等，因而具有很多特点：力矩大、反应速度快、定位精度高、成本低等．

关键词：电涡流离合器数控机床伺服系统

组合式非周期缺陷接地结构中FDTD应用研究

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固体电子学研究与进展 2005年第2期25卷 190-197页

作者：王雷丁荣林王安国金涛斌辛文莉李增路何庆国乐柏林天津大学电子信息工程学院天津300072 河北半导体研究所石家庄050051

组合式非周期缺陷接地结构(CNPDGS)是从光子带隙结构发展而来的,它是在微波电路的金属接地平面上人为地蚀刻出非周期性的“缺陷”,改变接地电流的分布,从而改变传输线的频率特性。与光子带隙结构(PBG)一样,具有明显的禁带特性。文中利... 详细信息

组合式非周期缺陷接地结构(CNPDGS)是从光子带隙结构发展而来的,它是在微波电路的金属接地平面上人为地蚀刻出非周期性的“缺陷”,改变接地电流的分布,从而改变传输线的频率特性。与光子带隙结构(PBG)一样,具有明显的禁带特性。文中利用时域有限差分法(FDTD)研究了由CNPDGS结构构成低通滤波器的频率特性,并在此基础上研制了带宽可调节的低通滤波器,测量结果与数值分析一致性很好,进一步验证了FDTD分析的正确性,CNPDGS低通滤波器的研制,为该类型滤波器的设计提供了依据。最后讨论了FDTD方法中完全匹配层(PML)对电路特性分析的影响,给出了电路特性随PML层数变化的曲线。这对FDTD法分析缺陷接地结构时PML的选取具有一定的参考价值。

关键词：时域有限差分法组合式非周期缺陷接地结构低通滤波器完全匹配层