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基于LiDAR与可见光融合的自动风电叶片巡检方法

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自动化应用 2024年第3期65卷 102-105页

作者：梅东升薛长站张宇博梁国杰付达孟超北京京能能源技术研究有限责任公司北京100020

传统风机叶片使用人工吊篮、望远镜、手动操控无人机的方式进行巡检,存在巡检难度大、巡检效率低、拍摄数据规范性差等问题。为此,提出了一种在无人机平台上基于LiDAR与可见光融合的风机叶片自动化巡检的方法。通过融合可见光相机、激... 详细信息

传统风机叶片使用人工吊篮、望远镜、手动操控无人机的方式进行巡检,存在巡检难度大、巡检效率低、拍摄数据规范性差等问题。为此,提出了一种在无人机平台上基于LiDAR与可见光融合的风机叶片自动化巡检的方法。通过融合可见光相机、激光雷达采集的多源数据自动规划风机状态的智能感知和无人机航线,可实现拍摄风机叶片的不同部位(前缘、后缘、迎风面、背风面)并选择最佳角度、最佳距离,在保证巡检安全的前提下极大地提升了叶片巡检的质量,同时降低了风机巡检人员的作业难度,提升了风机叶片的巡检效率。

关键词：风机叶片巡检激光雷达可见光相机

Compulsory Licensing of Pharmaceutical Patents System from the Perspective of Public Interest-Public Health in China

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Asian Journal of Social Pharmacy 2020年第1期15卷 7-15页

作者： zhang yubo Yuan Hongmei School of Business Administration Shenyang Pharmaceutical UniversityShenyang 110016China

Objective To study the types and acquisition paths of drug data in the administrative act of compulsory licensing of pharmaceutical patents so as to provide data support for the implementation of compulsory licensing of pharmaceutical patents from the perspective of public interest-public health in *** Situation of compulsory licensing of pharmaceutical patents in the context of public interest-public health in China was selected,combined with international conventions and the principle provisions of relevant laws,and cases of compulsory licensing of pharmaceutical patents in foreign countries were reviewed to extract drug-related data of compulsory licensing of pharmaceutical *** and Conclusion According to the analysis of China’s compulsory licensing of pharmaceutical patents theory and legal provisions,the data could be divided into five categories for compulsory licensing of pharmaceutical patents in China:diseases,drugs,patents,generic drug enterprises,and licensing ***,some data are *** were also problems in obtaining data or inconsistent standards in five levels of compulsory licensing of pharmaceutical patents in the context of public interest-public *** was not conducive to the implementation of compulsory licensing of pharmaceutical patents in ***,it should be further established a unified data support system at the national level,specifying the standard of licensing fee,implementing relevant laws and regulations.

关键词： compulsory license public interest public health data acquisition

New ent-kaurane diterpenes with chiral epoxyangelate moieties from Wedelia prostrata

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Chinese Chemical Letters 2019年第2期30卷 451-453页

作者： Zhongnan Wu yubo zhang Wen Li Nenghua Chen Qianwen Niu Yingying Li Qingguo Li Dan Yang Yaolan Li Guocai Wang Institute of Traditional Chinese Medicine ξ Natural Products College of Pharmacy and Guangdong Province Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs ResearchJinan University Integrated Chinese and Western Medicine Postdoctoral Research Station Jinan University School of Pharmaceutical Sciences Guangzhou University of Chinese Medicine Department of Specific Diagnosis The 324th Military Hospital

Four new ent-kaurane diterpenes with chiral epoxyangelate moieties, (2′R,3′R)-3 a- (2′,3′-epoxyangeloyloxy)-kaur-16-en-19-oic acid (1), (2′S,3′S)-3 a- (2′,3′-epoxyangeloyloxy)-kaur-16-en-19-oic acid (2), (2′S,3′R)-3 a- (2',3'-epoxyangeloyloxy)-kaur-16-en-19-oic acid (3) and (2′R,3′S)-3α- (2′,3'-epoxyangeloyloxy)-kaur-16-en-19-oic acid (4), along with eight known diterpenes (5-12), were isolated from Wedelia prostrata. The absolute configurations of the new structures were determined by X-ray crystallography,ECD calculations and chemical methods. All compounds were evaluated for their cytotoxicity activities on human HepG-2 cells,with IC_(50) values of 11.72 ±0.22 μmol/L to 54.75±1.12 μmol/L.

关键词： Wedelia prostrata Chiral epoxyangelate moieties Ent-kaurane diterpenes Absolute configuration Cytotoxicity activities

Dietary supplementation of laminarin improves the reproductive performance of sows and the growth of suckling piglets

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Journal of Animal Science and Biotechnology 2024年第1期15卷 329-343页

作者： Pengguang zhang Guoyuan Jiang Chenghong Ma yubo Wang Enfa Yan Linjuan He Jianxin Guo Xin zhang Jingdong Yin State Key Laboratory of Animal Nutrition and Feeding College of Animal Science and TechnologyChina Agricultural UniversityBeijing 100193China

Background Maternal nutrition is essential in keeping a highly efficient production system in the pig *** has been shown to improve antioxidant capacity,reduce the inflammatory response,and favor the homeostasis of intestinal ***,the effect of dietary supplementation of laminarin on the reproductive performance of sows and the growth of suckling offspring remains *** A total of 40 Landrace×Yorkshire multiparous sows on d 85 of gestation,similar in age,body weight(BW),parity and reproductive performance,were randomly divided into four dietary treatments with 10 sows per treatment,receiving a control diet(basal pregnancy or lactating diets)and a basal diet supplemented with 0.025%,0.05%and 0.10%laminarin,*** experiment lasted from d 85 of gestation to d 21 of *** Laminarin supplementation linearly increased number born alive per litter(P=0.03),average daily feed intake(ADFI,P<0.01),and total milk yield of sows during the lactation of 1–21 d(P=0.02).Furthermore,maternal laminarin supplementation increased the average daily gain(ADG)of piglets while tending to reduce the culling and death rate before *** addition,alterations to the composition of colostrum and milk,as well as to serum inflammatory cytokines and immunoglobulins of sows were *** fecal microbiota profile of sows supported the improvement of reproductive performance in sows and the growth performance in suckling *** Dietary supplementation of laminarin during late pregnancy and lactation could significantly improve reproductive performance of sows and growth performance of piglets.

关键词： Fecal microbiota Laminarin Milk Piglets Reproductive performance Sows

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原位合成颗粒增强铜基复合材料的研究进展

铜业工程 2024年第2期 131-138页

作者：崔童杜善豪钱高祥张宇博王同敏李廷举大连理工大学材料科学与工程学院辽宁大连116024 江西云泰铜业有限公司江西鹰潭335400 大连理工大学宁波研究院浙江宁波315000

弥散强化型铜基复合材料,兼具优异的导电导热性能、高强度、良好的热稳定性和耐磨性,是核反应堆、航空器及高端装备中各种导电导热元件的关键材料,在核电、航空、交通、军事等诸多重要领域有不可替代的作用。原位合成法是在一定温度下... 详细信息

弥散强化型铜基复合材料,兼具优异的导电导热性能、高强度、良好的热稳定性和耐磨性,是核反应堆、航空器及高端装备中各种导电导热元件的关键材料,在核电、航空、交通、军事等诸多重要领域有不可替代的作用。原位合成法是在一定温度下金属基体内发生化学反应,原位生成一种或几种陶瓷增强体的技术。原位反应制备颗粒增强铜基复合材料存在两个重要的问题亟待解决:一是增强相的团聚问题,二是增强相的尺寸调控问题。本文总结了几种较为常用的制备弥散强化型铜基复合材料的原位合成方法,并对比分析了几种方法的特点、优劣及技术难点。同时,本文综述了原位合成法对铜基复合材料中颗粒尺寸和分布的影响,分析了原位合成法不同参数对复合材料力学及综合性能的影响规律,并从增强相颗粒形核与生长的原理出发,提出了促成细小弥散颗粒增强相的工艺方案。

关键词：原位合成法铜基复合材料颗粒增强高强高导物理外场

Multiscale engineering of molecular electrocatalysts for the rapid hydrogen evolution reaction

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Nano Research 2024年第7期17卷 6026-6031页

作者： Huan Li Zhan Jiang yubo Yuan Yirong Tang Jie Zao Wentao zhang Peiyi Han Xun zhang Bulin Chen Yongye Liang Department of Materials Science and Engineering Southern University of Science and TechnologyShenzhen 518055China South China Institute of Environmental Sciences Guangzhou 510655China

Molecular electrocatalysts have demonstrated potential for the hydrogen evolution reaction(HER)due to their well-defined structures and high intrinsic *** rapid production of hydrogen requires molecular electrocatalysts to operate at high current densities,which still presents a *** this work,we demonstrate that molecularly dispersed electrocatalysts of cobalt phthalocyanine anchored on carbon nanotubes(CoPc MDEs)are superior candidates due to the efficient charge transport between the substrate and the active *** intrinsic activity can be enhanced by introducing functional groups on *** facilitate mass transport,di(ethylene glycol)substituted CoPc molecules are further anchored on a threedimensional self-supported electrode(CoPc-DEG MDE@CC),enabling continuous operation for 25 h at−1000 mA/cm^(2)in 1.0 M *** study demonstrates the potential of molecular electrocatalysts for HER and emphasizes the importance of adjusting intrinsic activity,and charge and mass transport capacity for practical molecular electrocatalysts.

关键词： hydrogen evolution reaction cobalt phthalocyanine intrinsic activity mass transport

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烟草白粉病研究进展

现代农业科技 2024年第7期 70-73页

作者：袁华杨方福平胡贤锋潘首慧李翔宇张玉波安顺市农业农村局贵州安顺561000 安顺学院贵州安顺561000 贵州省烟草公司安顺市公司贵州安顺561000 贵州中烟工业有限公司贵州安顺561000

烟草白粉病是由专性寄生菌引起的烟草重要病害之一,主要危害烟草叶片,导致烟叶受损,严重时造成整株死亡,使烟草的产量和品质下降。烟草白粉病是严重制约烟草绿色高质量发展的重要原因之一。本文阐述了烟草白粉病的病原菌形态特征,总结... 详细信息

烟草白粉病是由专性寄生菌引起的烟草重要病害之一,主要危害烟草叶片,导致烟叶受损,严重时造成整株死亡,使烟草的产量和品质下降。烟草白粉病是严重制约烟草绿色高质量发展的重要原因之一。本文阐述了烟草白粉病的病原菌形态特征,总结了其发病原因及发生特征,综述了农业防治、化学防治、生物防治等烟草白粉病防治措施,并从抗病基因筛选、植物代谢产物开发、混合使用各类物质等方面提出了展望,以期为烟草白粉病的绿色防控提供参考。

关键词：烟草白粉病病原菌发生原因发生特征防治措施展望

Characterization of Passive Films Formed on As-received and Sensitized AISI 304 Stainless Steel

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Chinese Journal of Mechanical Engineering 2019年第2期32卷 61-72页

作者： yubo zhang Hongyun Luo Qunpeng Zhong Honghui Yu Jinlong Lv Key Laboratory of Aerospace Materials and Performance (Ministry of Education) School of Materials Science and Engineering Beijing University of Aeronautics and Astronautics The Collaborative Innovation Center for Advanced Aero-Engine (CICAAE) Beijing University of Aeronautics and Astronautics Beijing Key Laboratory of Advanced Nuclear Materials and Physics Beijing University of Aeronautics and Astronautics China Waterborne Transport Research Institute Beijing Key Laboratory of Fine Ceramics Institute of Nuclear and New Energy Technology Tsinghua University

The current research of corrosion resistance of stainless steels mainly focuses on characterization of the passive films by point defect mode and mixed-conduction model. The corrosion resistance of the passive films formed on asreceived and sensitized AISI304 stainless steel in borate bu er solution were evaluated in this paper. The degree of sensitization and corrosion resistance of AISI304 stainless steels was evaluated by double loop electrochemical potentiodynamic reactivation and electrochemical impedance spectroscopy. The passive films formed on the stainless steels were studied by XPS technique. It was found that as-received specimen had higher pitting corrosion potential and corrosion resistance than sensitized one. The Mott-Schottky results showed that sensitized stainless steel had more defects in the passive film than as-received one. The compositions of the passive films were mainly Cr and Fe oxides according to XPS results.

关键词： 304 stainless steel Sensitization Passive films XPS Impedance

Effect of nerve growth factor on angiogenesis in a rat model of sciatic nerve regeneration

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Neural Regeneration Research 2009年第2期4卷 139-143页

作者： yubo zhang Yamin Wu Lei Liu Chuan Song Zaiyun Long the 324 Hospital of Chinese PLA Chongqing 400020 China Research Institute of Field Surgery Daping Hospital Third Military Medical University of Chinese PLA Chongqing 400042 China

BACKGROUND： It remains to be determined whether nerve growth factor （NGF） can promote angiogenesis in regenerating peripheral nerves during repairing peripheral nerve injury. OBJECTIVE： To evaluate the effects of NGF on angiogenesis, and to analyze the influencing mechanisms of NGF, according to the expression patterns of CD34, von Willebrand factor （vWF）, vascular endothelial cell growth factor （VEGF）, and the NGF receptor TrkA in proliferating vascular endothelial cells from a rat model of sciatic nerve injury. DESIGN, TIME AND SETTING： Randomized, controlled study performed at the Research Institute of Field Surgery, Daping Hospital affiliated to the Third Military Medical University of Chinese PLA, between October 2003 and July 2005. MATERIALS： Forty-five healthy, adult, Wistar rats underwent sciatic nerve injury. The rats were randomly divided into four groups： NGF ＋ chitosan （n = 15）, NGF ＋ chitosan ＋ anti-VEGF （n = 10）, chitosan （n = 10）, and physiological saline （n = 10）. METHODS： A 1 -cm defected sciatic nerve was bridged with a silica gel conduit. NGF ＋ chitosan group： 100 μ L chitosan and 5 μ L NGF （20 mg/L） were injected into the silica gel conduit; NGF ＋ chitosan ＋ anti-VEGF group： an additional 5μ L anti-VEGF monoclonal antibody （1 g/L） was injected into the silica gel conduit; chitosan group： 100μL chitosan and 5 μL physiological saline were injected into the silica gel conduit; physiological saline group： only 5μL physiological saline was injected into the silica gel conduit. MAIN OUTCOME MEASURES： CD34 and vWf were used to label blood capillaries and large-diameter blood vessels in the regenerating peripheral nerves, respectively. At day 14 following surgery, immunohistochemistry was used to detect and semi-quantitatively analyze expressions of CD34, vWf, VEGF, and TrkA in proliferating vascular endothelial cells in the regenerating sciatic nerve. A confocal laser microscope was used to determine co-expression. RESULTS： Expressions of TrkA,

关键词： nerve growth factor sciatic nerve angiogenesis endothelial cell vascular endothelial cell growth factor co-expression