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Postulation of Seedling Resistance Genes in 20 Wheat Cultivars to Yellow Rust (Puccinia striiformis f. sp. tritici)

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Agricultural Sciences in China 2009年第12期8卷 1429-1439页

作者： feng Jing ZHANG Zhen-yu LIN rui-ming XU Shi-chang State Key Laboratory for Biology of Plant Disease and Insect Pests Institute of Plant Protection （IPP） Chinese Academy of Agricultural Sciences （CAAS） Beijing 100193 P.R.China

The gene postulation, cluster analysis and pedigree analysis of 20 wheat cultivars to 28 physiological races of yellow rust （Puccinia striiformis） were conducted under greenhouse conditions, The spectrum of their resistance were compared each other. None of the 20 cultivars were resistant to all the test pathogens. The cultivars containing resistance genes Yr5 and Yr24 were not find and genes Yr8, Yrl9 and Yr27 could not be postulated from cultivars tested due to the susceptibility to all isolates used. A total of 6 probale seedling yellow rust resistance genes or gene combinations （Yrl, Yr2, Yr2 ＋ YrHVII, Yr3 ＋ unknown, Yr3 ＋ Yr4, YrAlba） were postulated in the wheat cultivars （Atou, Flanders, Maris Huntsman, Bouquet, Holdfast, Elite Lepeuple, and Vilmorin 27）. The gene combination Yr2＋YrHVII with the highest frequency （35%） was present in 7 cultivars. The Yr genes present in some wheat cultivars could not be postulated because of non-matching virulence combinations with any of known genes. Cluster result showed that Yr2 and Yr3 are the most important genes in the cultivars. The 13 cultivars are believed to have the pedigree of Noe, which was selected from South Russian wheat. These results will be useful for wheat breeding and provide information about genetic control of wheat yellow rust.

关键词： wheat Puccinia striiformis gene postulation cluster analysis

Optimization and application of blasting parameters based on the "pushing-wall" mechanism

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International Journal of Minerals,Metallurgy and Materials 2012年第10期19卷 879-885页

作者： feng-yu Ren Thierno Amadou Mouctar Sow Rong-xing He Xin-rui Liu College of Resources and Civil Engineering Northeastern University

The large structure parameter of a sublevel caving method was used in Beiminghe iron mine. The ores were generally lower than the medium hardness and easy to be driUed and blasted. However, the questions of boulder yield, ＂pushing-wall＂ accident rate, and brow damage rate were not effectively controlled in practical blasting. The model test of a similar material shows that the charge concentration of bottom blastholes in the sector is too high; the pushing wall is the fundamental reason for the poor blasting effect. One of the main methods to adjust the explosive distribution is to increase the length of charged blastholes. Therefore, the field tests with respect to increasing the length of uncharged blastholes were made in 12# stope of-95 subsection and 6# stope of Beiminghe iron mine. This paper took the test result of 12# stope as an example to analyze the impact of charge structure on blasting effect and design an appropriate blasting parameter that is to similar to No. 12 stope.

关键词： iron mines and mining excavation blasting optimization

Gallium-based anodes for alkali metal ion batteries

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Journal of Energy Chemistry 2021年第4期30卷 557-571页

作者： Wenjin Yang Xianghua Zhang Huiteng Tan Dan Yang yuezhan feng Xianhong rui Yan yu School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006GuangdongChina Hefei National Laboratory for Physical Sciences at the Microscale Department of Materials Science and EngineeringKey Laboratory of Materials for Energy ConversionChinese Academy of Sciences(CAS)University of Science and Technology of ChinaHefei 230026AnhuiChina Dalian National Laboratory for Clean Energy(DNL) Chinese Academy of SciencesDalian 116023LiaoningChina State Key Laboratory of Fire Science University of Science and Technology of ChinaHefei 230026AnhuiChina Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Alkali metal ion batteries(AMIBs)are playing an irreplaceable part in the energy revolution,due to their intrinsic advantages of large capacity/power density and abundance of alkali metal ions in the earth’s *** their great promise,the inborn deficiencies of commercial graphite and other anodes being researched so far call for the quest of better alternatives that exhibit all-round performance with the balance of energy/power density and cycling ***-based materials,with impressive capacity utilization and self-healing ability,provide an anticipated solution to this *** this review,an overview on the recent progress of gallium-based anodes and their storage mechanism is *** current strategies used as engineering solutions to meet the scientific challenges ahead are discussed,in addition to the insightful outlook for possible future study.

关键词： Gallium-based materials Anode Alkali metal ion batteries

Synergistic creation of highly stable strain-insensitive pressure sensors by in-plane strain modulation and quasi-homogenous interfacial design

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Journal of Materials Science & Technology 2023年第28期159卷 72-80页

作者： Xuyang feng Shaoxiong Hu Jiajie yu Zhanpeng Guo rui Wang Wei Zhu yuan Deng School of Materials Science and Engineering Beihang UniversityBeijing 100191China Key Laboratory of Intelligent Sensing Materials and Chip Integration Technology of Zhejiang Province Hangzhou Innovation Institute of Beihang UniversityHangzhou 310052China Research Institute for Frontier Science Beihang UniversityBeijing 100083China

The urgent requirement of electronic skin conformably attached to nonplanar surfaces to provide sta-ble monitoring in areas of healthcare,prosthetics,and robotics promotes the development of strain-insensitive/unperturbed pressure *** main challenges lie in:(1)stretchability and conduc-tive stability of flexible electrodes and(2)mechanical stability of heterogeneous *** study presents a highly stable strain-insensitive pressure sensor achieved by in-plane strain modulation and quasi-homogenous interfacial *** modulation of stretchable electrodes by both periodic mi-crostructured engineering and pre-stretching strategies(called“island-ripple”)was employed to suppress microcracks *** improvement in stretchability and cyclic conductive stability of electrodes was identified by finite element analysis and experimental *** pre-stretched microconed stretchable electrode with a low sheet resistance of 0.546sq^(−1) shows a maximum deformation of up to 80%and excellent cyclic conductive stability over 10000 times under 30%***-homogenous interface strategy by the CNTs/PDMS system was employed to enhance the mechanical and electrical sta-bility of the electrode-active materials interface,demonstrating a strong peel strength and shear strength of>40.9 N/m and>124.8 kPa,*** as-prepared strain-insensitive pressure sensor provides constant sensing performance over 5000 stretching-releasing cycles within 20%*** addition,a 4×4 pixel strain-insensitive pressure sensor array with reduced cross-talk circuit design was further integrated to identify the shape and weight of different objects under *** stretchability and sta-bility of our sensor enable it to be applied in stretchable electronics with great potential.

关键词： Strain-insensitive/unperturbed pressure sensor Stretchable electrode Finite element analysis Quasi-homogenous design

Advances in phase-sensitive optical time-domain reflectometry

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Opto-Electronic Advances 2022年第3期5卷 25-52,I0001页

作者： Shuaiqi Liu Feihong yu rui Hong Weijie Xu Liyang Shao feng Wang Department of Electrical and Electronic Engineering Southern University of Science and TechnologyShenzhen 518000China Key Laboratory of Intelligent Optical Sensing and Manipulation Ministry of EducationNanjing UniversityNanjing 210023China

Phase-sensitive optical time-domain reflectometry(Φ-OTDR)has attracted numerous attention due to its superior performance in detecting the weak perturbations along the *** on the ultra-sensitivity of light phase to the tiny deformation of optical fiber,Φ-OTDR has been treated as a powerful technique with a wide range of *** is fundamental to extract the phase of scattering light wave accurately and the methods include coherent detection,I/Q demodulation,3 by 3 coupler,dual probe pulses,and so ***,researchers have also made great efforts to improve the performance ofΦ-*** frequency response range,the measurement accuracy,the sensing distance,the spatial resolution,and the accuracy of event discrimination,all have been enhanced by various ***,lots of researches on the applications in various kinds of fields have been carried out,where certain modifications and techniques have been ***,Φ-OTDR remains as a booming technique in both researches and applications.

关键词： optical fiber sensors Ф-OTDR phase demodulation application research

Recent progress on photoactive nonprecious transition-metal complexes

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Science China Chemistry 2025年第1期 46-95页

作者： Zhong-Liang Gong Hong-Jie Zhang Yan Cheng Jianxun Liu yuhan Ai Yaqin Li Zhihui feng Qiong Zhang Shaolong Gong Yong Chen Chang-Jiang Yao yuan-yuan Zhu Liang-Jin Xu yu-Wu Zhong CAS Key Laboratory of Photochemistry Institute of Chemistry Chinese Academy of Sciences State Key Laboratory of Structural Cemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences School of Chemistry and Chemical Engineering Anhui Key Laboratory of Advanced Catalytic Materials and Reaction EngineeringHefei University of Technology State Key Laboratory of Explosion Science and Safety Protection School of Mechatronical Engineering Beijing Institute of Technology College of Chemistry and Molecular Sciences Hubei Key Lab on Organic and Polymeric Optoelectronic Materials Wuhan University School of Chemistry and Chemical Engineering Anhui University Key Laboratory of Photochemical Conversion and Optoelectronic Materials & CAS-HKU Joint Laboratory on New Materials Technical Institute of Physics and Chemistry Chinese Academy of Sciences

Photoactive complexes of nonprecious transition metals, mainly including those in the first-row and partially the second-row of the Periodic table of elements, have received increasing attention in view of their low cost and long-term sustainability. They are recognized as promising alternatives to noble transition metal complex congeners that have been extensively studied in optoelectronic devices, artificial photosynthesis, photocatalysis, biodiagnostics, and therapeutics, etc. This review is devoted to a comprehensive summary on the classical and recent advances on photoactive nonprecious transition metal complexes, including photoactive Zr, V, Cr, Mo, and W complexes, Mn complexes and hybrids, Fe, Co, Ni, and Cu complexes, and Zn and Cd complexes and hybrids. A particular focus is given on the molecular design, modulation of photophysical and photochemical properties, and applications of the representative and lately-developed nonprecious metal complexes. In addition, a perspective on the future development in this field is provided at the end of this review.

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Short-term Association of Meteorological Elements on COVID-19 Pandemic in a Semi-arid City of Northwest China,2021-2022

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Biomedical and Environmental Sciences 2024年第5期37卷 537-542页

作者： feng feng Liu MA yu Xia CHENG Bo Wen LIU Zong rui ZHAO yu Han YANG Jie College of Atmospheric Sciences Key Laboratory of Semi-Arid Climate ChangeMinistry of EducationLanzhou UniversityLanzhou 730000GansuChina Minhe Meteorological Bureau Minhe 810800QinghaiChina

The coronavirus disease 2019(COVID-19)outbreak in late 2019 significantly impacted global *** virus’s rapid spread,with its long incubation period and high infection level,caused substantial disruption to regular social frameworks,production,and lifestyles^([1]).COVID-19 is primarily transmitted through close contact,long-range contaminants,and airborne routes.

关键词： Northwest COV primarily

质子入射In靶激发L系特征X射线的角分布研究

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原子与分子物理学报 2025年第2期42卷 98-104页

作者：柳钰王兴徐忠锋周贤明程锐张小安梁昌慧咸阳师范学院与中国科学院近代物理研究所联合共建离子束与光物理实验室咸阳712000 西安交通大学物理学院西安710049 中国科学院近代物理研究所兰州730000

本论文实验测量并分析了发射角以10°为间隔,125°-155°范围内,入射能量为250 keV的质子束激发In靶产生的特征L系X射线谱,根据实验测得能谱结果,综合考虑探测器的探测效率后,计算了不同探测角度下特征X射线的相对强度比L_(ι)/L_(γ1)... 详细信息

本论文实验测量并分析了发射角以10°为间隔,125°-155°范围内,入射能量为250 keV的质子束激发In靶产生的特征L系X射线谱,根据实验测得能谱结果,综合考虑探测器的探测效率后,计算了不同探测角度下特征X射线的相对强度比L_(ι)/L_(γ1);由相对强度比L_(ι)/L_(γ1)与二阶勒让德函数P_(2)(cosθ)之间的函数关系,发现特征X射线Lι在被测能量下呈各向异性发射,推得Lι特征X射线的各向异性参数β为-0.179±0.011,进而得到In靶L_(3)亚壳层的定向度A_(20)为-0.422±0.025,实验结果与理论预测一致.根据PWBA(Plane wave born approximation)模型和ECPSSR(Energy-loss coulomb-repulsion perturbed-stationary-state relativistic)模型,计算了250 keV质子入射下,In靶L亚壳层电离截面σ及Coster-Kronig跃迁矫正因子κ,在根据各向异性参数计算L_(3)亚壳层定向度的过程中考虑了Coster-Kronig跃迁的作用.分析认为本实验碰撞速度下,通过电子转移方式产生空穴的截面比直接电离小的多,所以没有对L_(3)亚壳层定向度进行电子转移因素的修正.

关键词：碰撞电离特征X射线角分布各向异性

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Comparative transcriptome analysis of global effect of ddh and lysE deletion on 4-hydroxyisoleucine production in Corynebacterium glutamicum

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Systems Microbiology and Biomanufacturing 2022年第3期2卷 542-554页

作者： rui Chen Youhe Xiang Xinping yu Meiling Zhang feng Shi State Key Laboratory of Food Science and Technology Jiangnan University1800 Lihu AvenueWuxi 214122China Key Laboratory of Industrial Biotechnology Ministry of EducationSchool of BiotechnologyJiangnan UniversityWuxi 214122China International Joint Laboratory On Food Safety Jiangnan UniversityWuxi 214122China

4-hydroxyisoleucine(4-HIL)is a potential drug for diabetes and weight control.4-HIL was produced by expressing ido gene in L-isoleucine(Ile)-producing Corynebacterium *** L-lysine(Lys)was also accumulated as the main by-product in this recombinant strain *** attenuate Lys synthesis,two genes in Lys synthetic pathway,i.e.,ddh encoding the diaminopimelic acid dehydrogenase and lysE encoding the specific Lys exporter were deleted in ***,the deletion of ddh increased 4-HIL titer by 28.1%,but did not decrease Lys content;while the deletion of lysE significantly reduced Lys content by 66.7%,but 4-HIL titer also decreased by 19.3%.Therefore,we carried out transcriptome analysis to reveal the global variation in these *** of ddh and lysE(especially lysE)enhanced the transcription of key enzymes in succinylase branch of Lys synthesis pathway(DapD and DapC)and several enzymes involved in succinyl-CoA accessibility(SucC,SucD and OdhI),suggesting the compensatory synthesis of Lys via succinylase *** addition,the transcription of ilvBN in Ile synthesis pathway was improved,while the transcription of some genes in the 2-methylcitrate cycle and inositol metabolism pathway was weakened in these *** deletion of ddh enhanced the transcription of aceA,ppc and pck,thus promoting oxaloacetate supply and 4-HIL *** of lysE affected the transcription of some stress-related genes and transporter genes,suggesting that this mutant would be under stress,thus attenuating its 4-HIL *** findings will be helpful for systematic microbiology and bio-manufacturing of ***.

关键词： 4-hydroxyisoleucine Corynebacterium glutamicum Transcriptome L-lysine