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Exposure to cuticular bacteria can alter host behavior in a funnel-weaving spider

Current Zoology 2018年第3期64卷 721-726页

作者： Olivia B.PARKS Krishna S.KOTHAMASU michael j.ziemba Morgan BENNER Madison CRISTINZIANO Serena KANTZ Daniel LEGER john LI Devanshi PATEL William RABUSE Samantha SUTTON Amandi WILSON Priyanka BAIREDDY Aditi A.KAMAT Mariah j.CALLAS Matthew j.BORGES Marysa N.SCALIA Emily KLENK Gabrielle SCHERER Maria M.MARTINEZ Sarah R.GRUBS Nancy KAUFMANN jonathan N.PRUITT Carl N.KEISER Department of Biological Sciences University of PittsburghPittsburghPA 15260USA Department of Ecology Evolutionand Marine BiologyUniversity of CaliforniaSanta BarbaraCA 93106USA Rice University Academy of Fellows Rice UniversityHoustonTX 77005USA Department of BioSciences Rice UniversityHoustonTX 77005USA

Contact with environmental microbes are arguably the most common species interaction in which any animal *** have noted diverse relationships between hosts and resident microbes,which can have strong consequences for host development,physiology,and behavior. Many of these studies focus specifically on pathogens or beneficial microbes,while the benign microbes,of which the majority of bacteria could be described,are often ***,we explore the nature of the relationships between the grass spider Agelenopsis pennsylvanica and bacteria collected from their cuticles in ***,using culture-based methods,we identified a portion of the cuticular bacterial communities that are naturally associated with these ***,we topically exposed spiders to a subset of these bacterial monocultures to estimate how bacterial exposure may alter 3 host behavioral traits:boldness,aggressiveness,and activity *** conducted these behavioral assays 3 times before and 3 times after topical application,and compared the changes observed in each trait with spiders that were exposed to a sterile control *** identified 9 species of bacteria from the cuticles of 36 spiders and exposed groups of 20 spiders to 1 of 4 species of cuticular *** found that exposure to Dermacoccus nishinomiyaensis and Staphylococcus saprophyticus was associated with a lO-fold decrease in the foraging aggressiveness of spiders toward prey in their *** bacterial exposure did not have survival consequences for hosts,these data suggest that interactions with cuticular bacteria,even non- pathogenic bacteria,could alter host behavior.

关键词： Agelenopsis pennsylvanica aggressiveness Araneae cuticular bacteria personality

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Analysis and Identification of Corona Parameters on Overhead Power Lines in Case of Direct Lightning Strikes

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高电压技术 2013年第8期39卷 1988-1994页

作者： Bajorek j Maslowski G ziemba R Department of Electrical and Computer Engineering Rzeszow University of Technology Rzeszow Poland

This paper presents a method for determining specific models of overhead power lines with presence of corona phenomenon. The obtained models provide stable numerical solutions for computer simulation of transients caused by direct lightning strikes. The corona non- linear charge-voltage characteristics obtained from experimental tests are used for identification of the corona parameters based on System Identification Toolbox implemented in Matlab package. Different transfer functions, which give the same waveshapes of overvoltages are de- termined using two parametric models. A circuit representation of the obtained transfer functions is proposed and the corona model is implemented in the EMTP-RV as a hierarchical structure composed of a overhead power line divided into sections with corona branches. Some computer simulations of lightning overvoltages propagated in a typical 220 kV power line due to direct lightning strikes to a line tower are presented. The proposed method and the model implemented in EMTP-RV are still valid for multi-conductor lines and for higher voltages of power lines but new corona nonlinear charge-voltage characteristics are required as an input parameter for the identification procedure.

关键词：架空电力线路直接雷击电晕系统辨识工具箱计算机模拟非线性特性参数模型鉴定

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Modeling of Nonlinear Elements During Lightning Overvoltage Simulations

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高电压技术 2008年第12期34卷 2595-2601页

作者： j. Bajorek M. Korzeniowski G. Maslowski R. ziemba Rzeszow University of Technology W. Pola 2 35-959 Rzeszow Poland

The paper presents some problems of lightning overvoltage modeling in transmission lines with nonlinear *** presented results were obtained mostly for fast front transients of subsequent lightning return stroke *** effectiveness of numerical algorithms of nonlinear models and possibilities of their development for such transients are *** simulations carried out by application of EMTP show that nonlinear models of back-flashover and ZnO arresters work properly,while the implemented corona model can not be used for relatively large peak values of subsequent lightning return-stroke currents.

关键词：雷电过电压仿真非线性无件模型

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延长口服抗生素可显著降低高风险人工髋、膝关节置换患者90d感染率

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临床骨科杂志 2019年第2期22卷 195-195页

作者： Inabathula A Dilley j E ziemba-Davis M 胡孔足(摘译) 不详

作者回顾性分析了2181例人工全髋、膝关节置换术患者资料,对于部分感染高风险患者延长7d预防性口服抗生素,分析90d感染率。结果发现,人工膝关节和人工髋关节90d感染率分别为1.0%和2.2%。

关键词：膝关节置换术口服抗生素人工全髋感染率高风险患者人工髋关节人工膝关节

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