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EurBeST——在商业养蜂条件下测试抗螨蜜蜂的中试研究

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中国蜂业 2024年第1期75卷 29-30页

作者： R.Buechler(文/图) A.Uzunov(文/图) C.Costa(文/图) m.meixner(文/图) Y.Le Conte(文/图) F.mondet(文/图) m.Kovacic(文/图) S.Andonov(文/图) N.L.Carreck(文/图) L.Dimitrov(文/图) B.Basso(文/图) m.Bienkowska(文/图) R.Dall’(文/图) Olio F.Hatjina(文/图) U.Wirtz(文/图) 陈超(文/图) 不详

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一... 详细信息

根据官方报告,欧盟约有1600万群蜂、60万养蜂人,年生产蜂蜜价值近20亿欧元。除了直接生产蜂产品的价值外,蜜蜂还为农作物和野生植物授粉,有助于维护生物多样性和健康的农业生态系统。但是,农业生产的集约化、气候变化和全球化等导致一些蜂病的流行,给蜂群带来了巨大的压力。这其中包括寄生性的大蜂螨(Varroa destructor),如果不采取治疗措施,大多数蜂群在感染后一年内死亡。

关键词：农业生态系统大蜂螨寄生性蜂病蜂产品商业养蜂蜜蜂官方报告

Diurnal variation of ozone flux over corn field in Northwestern Shandong Plain of China

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Science China Earth Sciences 2014年第2期57卷 503-511页

作者： ZHU ZhiLin SUN Xiaomin DONG YunShe ZHAO FengHua Franz X meixner Key Laboratory of Ecosystem Network Observation and modeling Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Department of Environmental Geography and Human Health Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Biogeochemistry Department Max Planck Institute for Chemistry

High concentration ground-level ozone(O3)has adverse effects on plant growth and *** to the O3concentration-based index,the O3flux-based(especially stomatal O3uptake)index has been considered the better criterion for assessing the impact of ozone on vegetation and *** paper reports on a study of O3flux using the eddy covariance technique over a corn field in the Northwestern Shandong Plain of *** variation of atmospheric O3concentration,deposition velocity and flux,and their relationships to environmental factors are *** results show that:(1)During the observation period(9 August–28 September,2011),there was a strong diurnal variation of O3concentration,with low(16.5 nL L?1)and high(60.1 nL L?1)O3mean concentrations observed around 6:30 and 16:00,*** O3concentrations during daytime(6:00–18:00)and nighttime(18:00–6:00)were 39.8±23.1 and 20.7±14.1 nL L?1(mean±std),*** maximum observed concentration was 97.5 nL L?*** concentration was mainly affected by solar radiation and air temperature.(2)Whether daytime or nighttime,ground-level O3flux is always *** diurnal course of mean deposition velocity was divided into 4 phases:a low and stable process during nighttime,fast increasing in early morning,relatively large and steady changes around noon,and quickly decreasing in later *** and nighttime mean deposition velocities were 0.29 and 0.09 cm s?1,*** maximum deposition velocity was 0.81 cm s?*** magnitude of deposition velocity was influenced by the corn growth period,and its diurnal variation was significantly correlated with global radiation and relative humidity.(3)O3flux was affected by variations of both O3concentration and deposition velocity,with mean O3fluxes-317.7 and?70.2 ng m?2s?1during daytime and nighttime,*** was strong correlation between O3flux and CO2flux or latent heat *** comparing the deposition velocities of daytime a

关键词：日变化过程地面臭氧中国西北潜热通量玉米田平原山东平均沉积速率

Ozone concentrations, flux and potential effect on yield during wheat growth in the NorthwestShandong Plain of China

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Journal of Environmental Sciences 2015年第8期27卷 1-9页

作者： Zhilin Zhu Xiaomin Sun Fenghua Zhao Franz X.meixner Key Laboratory of Ecosystem Network Observation and modeling Institute of Geographic Sciences and Natural Resources ResearchChinese Academy of Sciences Biogeochemistry Department Max-Planck-Institute for Chemistry

Ozone（O3） concentration and flux（Fo） were measured using the eddy covariance technique over a wheat field in the Northwest-Shandong Plain of China. The O3-induced wheat yield loss was estimated by utilizing O3exposure-response models. The results showed that：（1） During the growing season（7 march to 7 June, 2012）, the minimum（16.1 ppb V） and maximum（53.3 ppb V）mean O3 concentrations occurred at approximately 6：30 and 16：00, respectively. The mean and maximum of all measured O3 concentrations were 31.3 and 128.4 ppb V, respectively. The variation of O3 concentration was mainly affected by solar radiation and temperature.（2） The mean diurnal variation of deposition velocity（V d） can be divided into four phases, and the maximum occurred at noon（12：00）. Averaged V d during daytime（6：00–18：00） and nighttime（18：00–6：00） were 0.42 and 0.14 cm/sec, respectively. The maximum of measured V d was about1.5 cm/sec. The magnitude of V d was influenced by the wheat growing stage, and its variation was significantly correlated with both global radiation and friction velocity.（3） The maximum mean F o appeared at 14：00, and the maximum measured F o was-33.5 nmol/（m^2·sec）. Averaged F o during daytime and nighttime were-6.9 and-1.5 nmol/（m^2·sec）, respectively.（4） Using O3 exposure-response functions obtained from the USA, Europe, and China, the O3-induced wheat yield reduction in the district was estimated as 12.9% on average（5.5%–23.3%）. Large uncertainties were related to the statistical methods and environmental conditions involved in deriving the exposure-response functions.

关键词： Ozone concentration Ozone flux Deposition velocity Eddy covariance Yield loss estimation Cropland ecosystem

复合黄铁矿堆浸中硫化铜氧化的热力学和动力学

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湿法冶金 1982年第2期 24-33页

作者： m.J.meixner,才锡民西德亚琛

在西班牙西南部黄铁矿带的野外条件下,用三种不同类型的含硫化铜的黄铁矿做了堆浸试验。矿石中的铜主要以黄铜矿的形式存在并为酸性硫酸铁溶液渗滤浸出。本文讨论了Cu-Fe-S-H-O体系的氧化机理。Fe3+离子为氧化剂,而浸出液中三价铁的总... 详细信息

在西班牙西南部黄铁矿带的野外条件下,用三种不同类型的含硫化铜的黄铁矿做了堆浸试验。矿石中的铜主要以黄铜矿的形式存在并为酸性硫酸铁溶液渗滤浸出。本文讨论了Cu-Fe-S-H-O体系的氧化机理。Fe3+离子为氧化剂,而浸出液中三价铁的总浓度是根据Fe3+-硫酸盐-水体系的平衡数据计算的。根据矿物浸出动力学的Wadsworth未反应核的模型稍加修改的形式用数学式很好地描述了浸出行为。确定了最符合实测浸出曲线的数学等式中的各参数。数学模型的外推可预测作为浸出时间和矿石粒度函数的浸出速度和金属回收率。

关键词：堆浸浸出时间平衡常数化学反应 FeOOH 浸出液体积回收率硫酸盐硫化合物矿石离子强度黄铁矿带硫化铜硫化物硫酸铁热力学氧化电位反应区火焰结构动力学

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按需喷墨印刷用油墨的性能研究

中国印刷与包装研究 2009年第1期1卷 113-114页

作者： Ronald m. meixner Dominik Cibis Klaus Krueger Holger Goebel

本文主要对压电驱动DOD微型供墨系统中的基于聚乙烯(3,4-乙烯二氧噻吩)/聚苯乙烯磺酸盐(PEDOT/PSS)等不同聚合材料油墨进行详细研究。根据油墨的流变特性和印刷系统的机械特性得到特性值,通过特性值可以预测给定印刷系统中聚合油墨的运... 详细信息

本文主要对压电驱动DOD微型供墨系统中的基于聚乙烯(3,4-乙烯二氧噻吩)/聚苯乙烯磺酸盐(PEDOT/PSS)等不同聚合材料油墨进行详细研究。根据油墨的流变特性和印刷系统的机械特性得到特性值,通过特性值可以预测给定印刷系统中聚合油墨的运行情况。除印刷适性外,还研究了不同油墨对有机场效应晶体管的电子特性的影响。

关键词：油墨按需喷墨印刷用有机场效应晶体管聚苯乙烯磺酸盐性能聚合材料印刷系统