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含吡唑醚菌酯成分种子处理悬浮剂的研制及对玉米茎腐病的防效评价

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农药 2024年第3期63卷 181-184页

作者：郭宁王彦军陈丹董跃广边强于淑晶河北省农林科学院植物保护研究所/农业农村部华北北部作物有害生物综合治理重点实验室/河北省农业有害生物综合防治技术创新中心/河北省作物有害生物综合防治国际科技联合研究中心河北保定071000 北农(海利)涿州种衣剂有限公司河北涿州072750 南开大学化学学院农药国家工程研究中心天津300071

[目的]明确8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理悬浮剂和12%吡唑醚菌酯·精甲霜灵种子处理悬浮剂最佳配方,研制防治玉米茎腐病的高效、低毒种衣剂。[方法]采用湿式超微粉碎法制备了6个8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理... 详细信息

[目的]明确8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理悬浮剂和12%吡唑醚菌酯·精甲霜灵种子处理悬浮剂最佳配方,研制防治玉米茎腐病的高效、低毒种衣剂。[方法]采用湿式超微粉碎法制备了6个8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理悬浮剂样品和6个12%吡唑醚菌酯·精甲霜灵种子处理悬浮剂样品,通过种衣剂性能和质量检测确定最佳配方,并对最佳配方种衣剂进行室内安全性检测和田间茎腐病防效验证。[结果]8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理悬浮剂最优配方:吡唑醚菌酯5%,精甲霜灵1%,咯菌腈2.5%,YUS-FS30005%,YUS-DF1011.5%,BX 0.5%,稳定剂4%,黄原胶0.4%,消泡剂0.1%,8%PVA17885%,警戒色1%,水补足。12%吡唑醚菌酯·精甲霜灵种子处理悬浮剂最佳配方:吡唑醚菌酯10%,精甲霜灵2%,YUS-FS30005%,YUS-DF1012%,稳定剂4%,黄原胶0.3%,硅酸镁铝1%,消泡剂0.1%,8%PVA17885%,警戒色1%,水补足。这2个配方对玉米生长安全,同时对玉米茎腐病的田间防效均达到80%以上。[结论]开发的8.5%吡唑醚菌酯·咯菌腈·精甲霜灵种子处理悬浮剂和12%吡唑醚菌酯·精甲霜灵种子处理悬浮剂对玉米茎腐病防效显著,为进一步开展玉米茎腐病的田间防治奠定了基础。

关键词：吡唑醚菌酯茎腐病玉米种子处理悬浮剂配方

面向环保接地施工的杆塔分支式外延接地网接地特性研究

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高压电器 2024年第10期60卷 1-11页

作者：廖玉琴屈路杨跃光廖民传李文荣王敩青中国南方电网有限责任公司超高压输电公司电力科研院广州510663 南方电网科学研究院有限责任公司广州510663

低碳环保已成为国家的战略和政策导向,输电杆塔在降阻施工时,常采用敷设长距离外延接地极方式接地,造成资源浪费、环境破坏等问题。针对杆塔接地施工环境的复杂性与施工面积的有限性,文中提出输电线路杆塔分支式外延接地网散流降阻结构... 详细信息

低碳环保已成为国家的战略和政策导向,输电杆塔在降阻施工时,常采用敷设长距离外延接地极方式接地,造成资源浪费、环境破坏等问题。针对杆塔接地施工环境的复杂性与施工面积的有限性,文中提出输电线路杆塔分支式外延接地网散流降阻结构,实现了接地降阻施工的低碳环保。首先,仿真计算单根外延接地极的有效降阻长度;然后,研究了土壤电阻率、入地电流频率对单分支式和多分支式外延接地网降阻特性的影响规律;最后,分析了不平衡分支式外延接地网的散流特性。结果表明:相比于传统方框带射线型接地网,分支接地极结构比例为1/3的单分支式外延接地网具备更好的降阻特性,并且三分支式外延接地网的接地施工面积更小,不平衡分支式外延接地网有助于进一步降低主接地网的散流密度。

关键词：环保接地有限施工面积分支式外延接地网降阻效率散流电流密度

A chemo-thermo-mechanically constitutive theory of high-temperature interfacial oxidation in alloys under deformation

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Science China(Technological Sciences) 2023年第4期66卷 1018-1037页

作者： ZHOU QianQian YANG Li NIE Min ZHOU YiChun we. yueguang College of Engineering BIC-ESATPeking UniversityXi'an 710126China School of Advanced Materials and Nanotechnology Xidian UniversityBeijing 100871China Frontier Research Center of Thin Films and Coatings for Device Applications Academy of Advanced Interdisciplinary ResearchXidian UniversityXi'an 710126China AECC Hunan Aviation Powe.plant Research Institute Zhuzhou 412002China

Failure due to interfacial oxidation is one of the most important factors in the failure of alloy systems at high *** analyze high-temperature interfacial oxidation in alloys under deformation,we.develop a thermodynamically consistent continuum theory of alloy interfacial oxidation process considering diffusion,oxidation,expansion,viscoplasticity,and deformation *** equations of force,mass,and energy are presented at first,while the coupled constitutive laws and evolution equations are constructed according to energy dissipation *** coupled kinetics reveals a new mechanism whereby deformation affects the oxidation reaction by changing the alloy’s critical oxygen *** tensile loads decrease the critical oxygen concentration and promote oxidation of the ***,external compressive loads increase the critical oxygen concentration and suppress the oxidation of the ***,this theory is applied to thermal barrier coatings(TBCs),exhibiting a good consistency with the high-temperature oxidation experiment of TBCs under external *** model successfully explains that the experimental phenomenon of external tensile load accelerates the growth of Al_(2)O_(3)-TGO(thermally grown oxides).Besides,external compressive loads slow down the growth of Al_(2)O_(3)-TGO at the interface and lead to internal oxidation of the bond *** presented framework has shown great potential for modeling high-temperature interfacial oxidation processes in alloy systems under deformation.

关键词： thermodynamics oxidation oxygen diffusion chemo-thermo-mechanically coupling alloy

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后交叉韧带重建的国际研究趋势与热点分析

中国组织工程研究 2024年第18期28卷 2947-2952页

作者：葛昊刘贤旺黄艺伟叶鹏程樊粤光曾建春广州中医药大学广东省广州市510000 广州中医药大学第一附属医院关节骨科广东省广州市510000 广州中医药大学第一附属医院白云医院骨科广东省广州市510000

背景:现如今由运动损伤或车辆创伤引起的后交叉韧带损伤比人们想象的更常见,后交叉韧带重建是其主要治疗方式之一,而目前后交叉韧带重建的手术方式和韧带选择尚存在大量争议。目的:全面分析全球后交叉韧带重建的应用趋势,并基于文献计... 详细信息

背景:现如今由运动损伤或车辆创伤引起的后交叉韧带损伤比人们想象的更常见,后交叉韧带重建是其主要治疗方式之一,而目前后交叉韧带重建的手术方式和韧带选择尚存在大量争议。目的:全面分析全球后交叉韧带重建的应用趋势,并基于文献计量学和视觉分析确定有前景的后交叉韧带重建研究热点。方法:从we. of Science数据库(WOS)中检索了2000-2022年与后交叉韧带重建相关的出版物(文章和评论),提取并详细分析了国家、机构、出版年份、作者、期刊、每篇文章的平均引用率、H指数、标题、出版物的关键词以及被引用次数最多的25篇文章。利用VOSviewe./citespace/Pajek软件分析关键词的共现结果,预测后交叉韧带重建的热点。结果与结论:共纳入664篇文章。①在过去的22年里,后交叉韧带重建文章的数量总体上呈上升趋势。前3个国家(美国、中国和韩国)占所有发表文章的65.51%,美国的文章数量最多。University of Pittsburgh是最大的贡献者。《Knee Surgery Sports Traumatol Arthrosc》和《American Journal of Sports Medicine》是最有影响力的杂志。Laprade,Robert F是在后交叉韧带重建领域发文量最多的教授,Fanelli,GC是在后交叉韧带重建领域总链强度最高的教授。②研究方向可分为以下5个组别:“后交叉韧带解剖及生物力学研究”“后交叉韧带重建的预后、结果和并发症”“后交叉韧带重建方式与肌腱选择”“手术技术”和“后交叉韧带撕裂联合多韧带损伤”。③提示:从往年的趋势来看,未来将有越来越多与后交叉韧带重建有关的文献发表。在后交叉韧带重建领域,美国处于世界领先地位,中国和韩国则呈现出巨大的潜力。后交叉韧带解剖及生物力学研究、后交叉韧带重建方式与肌腱选择、后交叉韧带撕裂联合多韧带损伤可能是未来后交叉韧带重建研究领域的热点。

关键词：文献计量学研究趋势热点后交叉韧带重建术可视化图谱生物力学

Effects of Mg on Mechanical Properties of 35CrNi3MoV Steel

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Journal of Materials Science & Technology 1998年第2期14卷 104-108页

作者： Yu, yueguang Fu, Jie Wang, Anren Chen, Boping Sun, we.shan Univ Sci & Technol Beijing Beijing 100083 Peoples R China Inner Mongolia Metall Mat Res Inst Baotou 014034 Peoples R China

The results show that Mg has less effect on the tensile properties and hardness of the steel at room temperature, but a right amount of Mg improves impact and fracture toughness and decreases the fracture-transition temperature considerably due to inclusions modification, as we.l as prolongs the notch stress rupture life dramatically through strengthening grain boundary and modifying boundary carbides. There is an optimum Mg content, which is about 0.0030% in the experimental 35CrNi3MoV steel. (Edited author abstract) 8 Refs.

关键词： Steel

Crack deflection occurs by constrained microcracking in nacre

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Acta Mechanica Sinica 2018年第1期34卷 143-150页

作者： Jingru Song Cuncai Fan Hansong Ma Lihong Liang yueguang we. LNM Institute of Mechanics Chinese Academy of Sciences Department of Mechanics College of Engineering Peking University

For decades, nacre has inspired researchers because of its sophisticated hierarchical structure and remarkable mechanical properties, especially its extreme fracture toughness compared with that of its predominant constituent,CaCO3, in the form of aragonite. Crack deflection has been extensively reported and regarded as the principal toughening mechanism for nacre. In this paper, our attention is focused on crack evolution in nacre under a quasi-static state. we.use the notched three-point bending test of dehydrated nacre in situ in a scanning electron microscope(SEM) to monitor the evolution of damage mechanisms ahead of the crack tip. The observations show that the crack deflection actually occurs by constrained microcracking. On the basis of our findings, a crack propagation model is proposed, which will contribute to uncovering the underlying mechanisms of nacre’s fracture toughness and its damage evolution. These investigations would be of great value to the design and synthesis of novel biomimetic materials.

关键词： Biological mineralized material Nacre Toughening mechanism Three-point bending test Crack deflection Microcracking

Fiscal Transfer, Education Investment and Long-Term Educational Performance

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China Finance and Economic Review 2022年第2期11卷 68-84页

作者： yueguang Gao Ziying Fan School of Public Finance and Taxation Southwest University of Finance and Economics School of Public Economics and Administration Shanghai University of Finance and Economics

Reasonable allocation of educational powe.s and expenditure responsibilities betwe.n central and local government is crucial to the development of *** reason lies in the fact that local governments have relatively insufficient incentives to invest in education by using local fiscal revenues,while the central government,which pursues the maximization of the interests of the whole society,could promote education and other public services with spatial *** fiscal transfer payment has made up for the shortage of local investment in *** paper uses 2010 census(micro data)and macro fiscal data to verify the effects *** on the year of birth and place,this paper constructs the proportion of fiscal transfers for compulsory education in the total fiscal revenue(local fiscal revenue and fiscal transfers)to reflect its structural *** is found that every 10%increase in the proportion of fiscal transfers brings at least additional 0.2 year of schoolings for local residents,and the effect of special transfer payments accounts for a larger share,among the three types of transfer *** the mechanism test,we.find that transfer payment can effectively increase local education expenditure and produce an obvious structural *** on this,in order to further improve the long-term educational performance of individuals,we.believe that it is necessary to improve the incentive effect of the transfer payment system on common powe. and the division of expenditure responsibilities in the field of education.

关键词： fiscal transfer local fiscal revenue educational performance

Materials,fundamentals,and technologies of liquid metals toward carbon neutrality

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Science China(Technological Sciences) 2023年第6期66卷 1576-1594页

作者： DENG yueguang E ErTai LI Jing JIANG Yi MEI ShengFu YU Yang School of Aerospace Engineering Beijing Institute of TechnologyBeijing 100081China Ruixin College Beijing Institute of TechnologyBeijing 100081China Jinggong College Beijing Institute of TechnologyBeijing 100081China North Information Control Research Academy Group Co. Ltd.Yangzhou 225001China Beijing DREAMInk Technologies Co. Ltd.Beijing 100080China

Carbon-neutral technologies are critical to ensure a stable future ***,low-melting-point liquid metals are emerging rapidly as important energy materials with significant potential to contribute to carbon *** advantages of gallium-and bismuth-based liquid metals,such as their high fluidity,low melting point,high thermal/electrical conductivity,unique chemical properties,non-flammability,and nontoxic characteristics,render them highly attractive for the development of advanced carbon-neutral *** their significance in both academia and industry has increased gradually,to the best of our knowledge,a systematic monograph of liquid-metal materials,mechanisms,and technologies toward carbon neutrality is not yet ***,we.presented a comprehensive review of low-melting-point liquid metals for carbon ***,liquid-metal materials,including fluids,pastes,solids,and their composites we.e ***,the mechanisms of liquid-metal technologies used to achieve carbon neutrality we.e ***,typical liquid-metal applications of carbon neutrality in the powe.,industry,transport,and building sectors we.e *** the fundamental mechanisms and promising technologies we.e elaborated upon,and the critical assessment criteria for carbon-neutral technologies we.e *** scientific and technical challenges and future perspectives in these areas we.e also highlighted.

关键词： liquid metal carbon neutrality heat transfer battery hydrogen catalyst carbon capture

急性脊髓损伤患者早期血清标志物与AISA分级的相关性

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中国组织工程研究 2024年第34期28卷 5494-5499页

作者：王月光穆晓红蒋昇源邓博文康喜梅苏建光濮阳市中医医院河南省濮阳市457000 北京中医药大学东直门医院北京市100700

背景:目前临床针对急性脊髓损伤严重程度的评估方法存在一定局限性,亟需一种快速、精准的评估手段。目的:分析急性脊髓损伤患者血清内相关氧化应激、神经损伤指标表达量与疾病严重程度的相关性。方法:选择2020年8月至2022年5月濮阳市中... 详细信息

背景:目前临床针对急性脊髓损伤严重程度的评估方法存在一定局限性,亟需一种快速、精准的评估手段。目的:分析急性脊髓损伤患者血清内相关氧化应激、神经损伤指标表达量与疾病严重程度的相关性。方法:选择2020年8月至2022年5月濮阳市中医医院收治的患者65例,其中急性脊髓损伤患者32例(试验组),单纯脊柱骨折患者33例(对照组),入院8 h内,评估患者美国脊髓损伤协会(ASIA)残损分级及神经功能评分,采集静脉血样本来检测血清中超氧化物歧化酶、丙二醛、谷胱甘肽、一氧化氮、神经胶质纤维酸性蛋白和神经元特异性烯醇化酶的水平,分析上述血清指标与ASIA残损分级、神经功能评分的相关性。结果与结论:(1)与对照组相比,试验组患者血清超氧化物歧化酶、谷胱甘肽水平降低(P 0.05);试验组患者血清中谷胱甘肽水平与AISA感觉功能评分呈正相关(r=0.569 9,P 0.05);试验组患者血清超氧化物歧化酶、谷胱甘肽水平与ASIA运动功能评分呈正相关(r=0.380,0.524 7,P 0.05);(3)结果显示,急性脊髓损伤患者血清中超氧化物歧化酶、丙二醛、谷胱甘肽、神经胶质纤维酸性蛋白、神经元特异性烯醇化酶水平与ASIA残损分级及神经功能评分具有显著相关性,作为临床早期评估疾病严重程度的生物标志物具有一定潜力。

关键词：急性脊髓损伤 AISA分级标志物氧化应激神经损伤