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A MIXED ELECTRIC BOUNDARY VALUE PROBLEM FOR AN ANTI-PLANE PIEZOELECTRIC CRACK

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Acta Mechanica Solida Sinica 2003年第2期16卷 110-115页

作者： Huang Zhenyu Kuang zhenbang (Department of Engineering Mechanics,Shanghai JiaotongUniversity,Shanghai 200240,China) Department of Engineering Mechanics Shanghai Jiaotong University Shanghai 200240 China

The analytical continuation method is adopted to solve a mixed electric boundary value problem for a piezoelectric medium under anti-plane *** crack face is partly conductive and partly *** results show that the stress intensity factor is identical with the mode Ⅲ stress intensity factor independent of the conducting *** the electric field and the electric displacement are dependent on the electric boundary conditions on the crack faces and are singular not only at the crack tips but also at the junctures between the impermeable part and conducting portions.

关键词： piezoelectric medium fracture mechanics mixed boundary value problem

A soybean NAC homolog contributes to resistance to Phytophthora sojae mediated by dirigent proteins

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The Crop Journal 2022年第2期10卷 332-341页

作者： Guolong Yu Jianan Zou Jinhui Wang Rongsheng Zhu Zhaoming Qi Hongwei Jiang zhenbang Hu Mingliang yang Ying Zhao Xiaoxia Wu Chunyan Liu Candong Li Xue yang Zhendong Zhu Qingshan Chen Yongfu Fu Dawei Xin Key Laboratory of Soybean Biology of MOE Key Laboratory of Soybean Biology and Breeding/Genetics of MOACollege of AgricultureNortheast Agricultural UniversityHarbin 150030HeilongjiangChina bMOA Key Lab of Soybean Biology(Beijing) National Key Facility of Crop Gene Resource and Genetic ImprovementInstitute of Crop SciencesChinese Academy of Agricultural SciencesBeijing 100081China Soybean Research Institute Jilin Academy of Agricultural ScienceChangchun 130033JilinChina School of Agriculture and Biology Shanghai Jiao Tong UniversityShanghai 200240China Jiamusi Branch Academy of Heilongjiang Academy of Agricultural Sciences Jiamusi 154007HeilongjiangChina Collaboration Centre to Russia of Institute of Grass Industry Heilongjiang Academy of Agricultural SciencesHarbin 150000HeilongjiangChina

Phytophthora sojae infection severely impairs soybean production. We previously identified a dirigent protein, Gm DRR1(Glycine max Disease Resistant Response 1), that increases soybean resistance to ***. However, the molecular basis of Gm DRR1 function remained largely uncharacterized. In the present study, analysis of Gm DRR1-RNAi, Gm DRR1-overexpressing, and CRISPR/Cas9-derived Gmdrr1 mutant lines revealed that Gm DRR1 expression significantly restricted P. sojae growth. Combining coimmunoprecipitation with liquid chromatography–tandem mass spectrometry revealed a Gm DRR1-interacting protein, Gm DRR2, which is homologous to Gm DRR1. An E-coniferyl alcohol coupling assay indicated that Gm DRR1 promotes the synthesis of(+)-pinoresinol, which helps to protect plants from P. sojae. The Gm NAC1(Glyma.05 G025500) transcription factor bound to the Gm DRR1 promoter both in vitro and in vivo to upregulate Gm DRR1 expression. Soybean resistance to P. sojae was increased by overexpression of Gm NAC1. Our findings suggest a novel signaling pathway involving a NAC transcription factor that mediates soybean resistance to P. sojae. Specifically, Gm NAC1 directly induces Gm DRR1 expression to increase resistance of soybean plants to P. sojae.

关键词： Phytophthora sojae Soybean GmNAC1 Dirigent Lignin

基于风洞试验的樟子松农田防护林防风效果研究

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内蒙古林业科技 2024年第3期50卷 14-21页

作者：石振邦张计标袁立敏蒙仲举胡志健内蒙古农业大学沙漠治理学院内蒙古呼和浩特010018 内蒙古自治区林业科学研究院内蒙古呼和浩特010010 内蒙古自治区沙地(沙漠)生态系统与生态工程重点实验室内蒙古呼和浩特010010 沙地生物资源保护与培育国家林业和草原局重点实验室内蒙古呼和浩特010010

樟子松(Pinus sylvestris var. mongolica)是我国“三北”地区主要造林树种之一,樟子松防护林具有较强的防风固沙能力。本研究以樟子松防护林为研究对象,开展了5种行带式配置防护林防风效益风洞试验研究,测定了不同配置防护林防护区不... 详细信息

樟子松(Pinus sylvestris var. mongolica)是我国“三北”地区主要造林树种之一,樟子松防护林具有较强的防风固沙能力。本研究以樟子松防护林为研究对象,开展了5种行带式配置防护林防风效益风洞试验研究,测定了不同配置防护林防护区不同距离范围内风速及其流场特征,研究了樟子松防护林不同行带配置与防护效益关系,为常绿针叶树种农田防护林营造提供理论依据。结果表明:(1)防风效能随着林带行数的增加而增强,且林带后1 H~3 H内风速显著降低,形成风影区,风影区面积随着林带行数的增加而变大。(2)樟子松防护林带后风速流场发生显著变化,在12 m·s^(-1)风速条件下,1~5行1带的5种林带防风效能分别为15.1%、26.2%、37.5%、51.7%和51.9%,4行1带、5行1带结构配置防风效能均在50.0%以上。(3)樟子松防护林具有较强的防风效果,建议在干旱区农田防护林建设与更新中可采用樟子松造林,最适结构配置为4行1带。

关键词：樟子松农田防护林带风洞试验林带结构

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早熟稳产夏大豆新品种宿豆219的选育

大豆科技 2024年第4期 55-58页

作者：马梦茹朱利广王培高亮赵振邦宿州市农业科学院安徽宿州234000

宿豆219是宿州市农业科学院以皖宿5717为母本,中黄13×中豆20后代选系2007-3为父本进行有性杂交,采用改良系谱法选育而成的夏大豆新品种。该品种早熟、稳产、抗病性好、适应性强、耐热耐旱、不裂荚、熟相优、籽粒商品性好,适宜淮河以北... 详细信息

宿豆219是宿州市农业科学院以皖宿5717为母本,中黄13×中豆20后代选系2007-3为父本进行有性杂交,采用改良系谱法选育而成的夏大豆新品种。该品种早熟、稳产、抗病性好、适应性强、耐热耐旱、不裂荚、熟相优、籽粒商品性好,适宜淮河以北及沿淮地区作夏大豆推广种植。2018—2019年参加安徽省夏大豆区域试验,2年平均产量为2568.5 kg/hm^(2),较对照品种中黄13增产6.69%。2020年参加安徽省夏大豆生产试验,平均产量为2831.1 kg/hm^(2),较对照品种中黄13增产6.49%。2021年通过安徽省农作物品种审定委员会审定,审定编号为皖审豆20210005。

关键词：大豆新品种宿豆219 选育

Effective Therapy to Treat Prolapse of Lumbar Intravertibral Disc

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中国针灸 1995年第S2期15卷 282-283页

作者： $$$$Hu zhenbang(Jinhu Hospital,Shunde City,Guangdong Province)

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ＥｆｆｅｃｔｉｖｅＴｈｅｒａｐｙｔｏＴｒｅａｔＰｒｏｌａｐｓｅｏｆＬｕｍｂａｒＩｎｔｒａｖｅｒｔｉｂｒａｌＤｉｓｃ￥ＨｕＺｈｅｎｂａｎｇ（ＪｉｎｈｕＨｏｓｐｉｔａｌ，ＳｈｕｎｄｅＣｉｔｙ，ＧｕａｎｇｄｏｎｇＰｒｏｖｉｎｃｅ）Ｔｈｅａｕｔｈｅｒｓａｍｍ...

关键词： Effective Therapy to Treat Prolapse of Lumbar Intravertibral Disc

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1株猪圆环病毒2型的分离与鉴定

畜牧与兽医 2024年第11期56卷 86-93页

作者：程泽李智王延辉王文强朱振邦曲向阳李向东扬州大学兽医学院江苏扬州225009 南京博维特健康管理有限公司江苏南京211899 普莱柯生物工程股份有限公司河南洛阳471003

为了解广东省某规模猪场引起母猪繁殖障碍及仔猪死亡的主要病原,通过实验室检测病死仔猪肺脏及淋巴结样品中常见病原,发现存在猪圆环病毒2型(PCV2)的感染。对阳性样品进行全基因组扩增、测序后,与国内外其他PCV2毒株进行同源性比对,建... 详细信息

为了解广东省某规模猪场引起母猪繁殖障碍及仔猪死亡的主要病原,通过实验室检测病死仔猪肺脏及淋巴结样品中常见病原,发现存在猪圆环病毒2型(PCV2)的感染。对阳性样品进行全基因组扩增、测序后,与国内外其他PCV2毒株进行同源性比对,建立系统遗传进化树并进行分析;通过猪肾细胞系进行病毒分离,使用荧光定量PCR及间接免疫荧光法对分离病毒进行鉴定。结果显示:分离的毒株GD-2为PCV2a基因型,基因组全长为1768 bp。与其他毒株相比,GD-2与H24-1-2019、E15-2-2019、F18-2-2019这3株PCV2毒株基因组同源性为99.9%。毒株GD-2经PK-15细胞系连续传代,第7代病毒滴度为10^(4.375)TCID_(50)/0.1 mL。本研究为广东地区PCV2的流行提供了新的数据信息。

关键词：猪圆环病毒2型分离鉴定进化分析

Characterization and properties of a Sr2Si5N8:Eu^2+-based light-conversion agricultural film

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Journal of Rare Earths 2020年第5期38卷 539-545页

作者： Weibin Wu zhenbang Zhang Riyue Dong Gening Xie Jianxian Zhou Kejue Wu Haonan Zhang Qianpei Cai Bingfu Lei College of Engineering South China Agricultural UniversityGuangzhou 510642China Guangdong Laboratory of Lingnan Mordern Agriculture Guangzhou 510642China College of Materials and Energy South China Agricultural UniversityGuangzhou 510642China Guangdong Provincial Engineering Technology Research Center for Optical Agriculture Guangzhou 510642China

In this paper,the fracture surfaces of a light-conversion film were observed using a scanning electron microscope(SEM),and then,the fluorescence spectra and mechanical properties of the film were *** SEM results show that the average diameter of the light conversion agent is 500 *** results of the mechanical properties tests show that the tensile strengths of light-conversion film increase from9.86 to 12.16 MPa and that the strain at breakage increases from 2.37%to 2.75%.In addition,the application effects of the light-co nversion film were *** results indicate that plant height,length of the maximum leaf,width of the maximum leaf and breadth of the plants increase by 24.43%,15.30%,15.60%and 19.07%,*** quality of Chinese flowering cabbages treated with the lightconversion film is superior,including a 9.09%increase in the soluble protein content,a 21.27%increase in the polyphenol content,and a 19.15%increase in the soluble sugar *** on these results,light-conversion films can be applied in agricultural production.

关键词： Light-conversion film Sr2Si5N8%Eu^2+phosphor Biomass Photosynthetic pigment content Rare earths

Developing a USLE cover and management factor(C)for forested regions of southern China

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Frontiers of Earth Science 2020年第3期14卷 660-672页

作者： Conghui Li Lili Lin zhenbang Hao Christopher J.Post Zhanghao Chen Jian Liu Kunyong Yu Fujian Agriculture and Forestry University Fuzhou350002China University Key Laboratory for Geomatics Technology and Optimized Resources Utilization in Fujian Province Fuzhou350002China Department of Forestry and Environmental Conservation Clemson UniversityClemsonSC29634USA

The Universal Soil Loss Equation model is often used to improve soil resource conservation by monitoring and forecasting soil *** study tested a novel method to determine the cover and management factor(C)of this model by coupling the leaf area index(LAI)and soil basal respiration(SBR)to more accurately estimate a soil erosion map for a typical region with red soil in Hetian,Fujian Province,*** spatial distribution of the LAI was obtained using the normalized difference vegetation index and was consistent with the LAI observed in the field(R^2=0.66).The spatial distribution of the SBR was obtained using the Carnegie-Ames-Stanford Approach model and verified by soil respiration field observations(R^2=0.51).Correlation analyses and regression models suggested that the LAI and SBR could reasonably reflect the structure of the forest canopy and understory vegetation,***,the C-factor was reconstructed using the proposed forest vegetation structure factor(Cs),which considers the effect of the forest canopy and shrub and litter layers on reducing rainfall *** feasibility of this new method was thoroughly verified using runoff plots(R2=0.55).The results demonstrated that Cs may help local governments understand the vital role of the structure of the vegetation layer in limiting soil erosion and provide a more accurate large-scale quantification of the C-factor for soil erosion.

关键词： leaf area index remote sensing soil basal respiration forest vegetation structure factor vegetation layer structure

Ground demonstration system based on in-orbit assembly oriented manipulator flexible force control

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High Technology Letters 2017年第3期23卷 271-278页

作者：乔冠宇 Gao Huibin Peng Cheng Gu Yingying Xu zhenbang Xu Boqian Innovation Laboratory of Space Robot System Space Robot Engineering Center Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun 130033 P. R. China University of Chinese Academy of Sciences Beijing 100039 P. R. China

To eliminate the load weight limit of carrier rockets and reduce the burden on support structures,in-orbit assembly is a key technology to make design of scattering a large diameter telescope into submirror modules,which requires smooth operation of assembly robots,and flexible force control technology is necessary. A ground demonstration system is presented for in-orbit assembly focusing on flexible force control. A six-dimensional force/torque sensor and its data acquisition system are used to compensate for gravity. For translation and rotation,an algorithm for flexible control is proposed. A ground transportation demonstration verifies accuracy and smoothness of flexible force control,and the transportation and assembly task is completed automatically. The proposed system is suitable for the development of in-orbit assembly robots.

关键词： flexible force control gravity compensation ground demonstration system in-orbit assembly manipulator six-dimensional force/torque sensor