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Determination of Volume Conductivity of Polyethylene Using Positive Corona, When the Current through the Sample Depends Linearly on Grid Potential

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Journal of Materials Science and Chemical Engineering 2017年第12期5卷 40-51页

作者： Pranvera Dhima Floran vila Department of Physics University of Tirana Tirana Albania Laboratory of Institute of Communication Technology University of Technology Darmstadt Germany

In this paper we determine for the first time the volume conductivity of polyethylene (of 40 μm and 50 μm thickness), using the positive corona triode. A general theory of flowing of the current through the sample, when it depends linearly on the grid potential, is formulated. A concrete methodology for the definition of volume conductivity is composed. The volume conductivity of polyethylene lies within the interval: . These results obtained using the corona triode are closely similar to those obtained using the standardized “static” methods, thus showing its superiority to the “dynamic” method of electronic radiation.

关键词： Polyethylene Positive Corona Triode Volume Conductivity

Effect of Polarity on Volume Conductivity of Polymers, Determined by Corona Triode Method

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Advances in Materials Physics and Chemistry 2018年第10期8卷 387-400页

作者： Pranvera Dhima Floran vila Department of Physics University of Tirana Tirana Albania Laboratory of Institute of Communication Technology University of Technology Darmstadt Germany

In this paper, the effect of polarity on the volume conductivity of Kapton and polyethylene (PE), determined using the corona triode method, when the sample current depends linearly on grid potential, was studied. For the determination of volume conductivity, in addition to the analytical method, for the first time, a graphical method is presented as well. According to the experimental results, obtained by both methods, the volume conductivity values of negative corona charged samples were higher than those of the samples charged by positive corona. Considering the different nature of positive and negative coronas, these differences in results are to be expected and are in full accordance with the theoretical considerations as well. On the other hand, the good agreement between the analytical method results and those obtained by the graphical method, indicates high accuracy of the proposed analytical formula. Meanwhile, the satisfying accordance of experimental results with those found by the classical “static” and “dynamic” methods, confirms the accuracy of the corona method, for the determination of volume conductivity of polymers.

关键词： Positive Corona Negative Corona Volume Conductivity Kapton Polyethylene

Determination of Volume Conductivity of Thin Polymeric Films Using Corona Triode, When the Current through the Sample Depends Quadratically on Grid Potential

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Advances in Materials Physics and Chemistry 2018年第6期8卷 281-294页

作者： Pranvera Dhima Floran vila Department of Physics University of Tirana Tirana Albania Laboratory of Institute of Communication Technology University of Technology Darmstadt Germany

In this paper is determined the volume conductivity of thin polymeric films using the corona triode method, when the current through the sample exhibits a quadratic dependence on the grid potential. Based on the experimental data, for the first time, an effective methodology for the determination of volume conductivity, graphically and analytically, is composed. The results obtained by the proposed analytical formula, for polypropylene and Trespaphan, with two different configurations of structures, are closely similar to the graphical method results. In addition, the satisfying accordance of our results, with the results, found out with the consulted literature, obtained by the “static” methods, confirms the accuracy of the proposed methodology, for the determination of volume conductivity of thin polymeric films, using the corona triode.

关键词： Corona Triode Polymer Films Volume Conductivity

Endoscopic ultrasonography and idiopathic acute pancreatitis

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World Journal of Gastrointestinal Endoscopy 2010年第4期2卷 107-111页

作者： Juan J vila Endoscopy Unit Gastroenterology DepartmentHospital de NavarraPamplona 31008Spain

Idiopathic acute pancreatitis is a diagnostic challenge for *** possibility of finding a cause for pancreatitis usually relies on how far the diagnostic study is *** explorations such as endoscopic retrograde cholangiopancreatography and endoscopic ultrasonography can help to determine the cause of ***,microscopic bile examination and magnetic resonance cholangiopancreatography can also be helpful in the work up of these *** this article an approximation to the diagnostic approach to patients with idiopathic acute pancreatitis is made,taking into account the reported evidence with which to choose between the different available explorations.

关键词： Endosonography Cholangiopancreatograp hy Endoscopic retrograde Cholangiopancreatography Magnetic resonance Microscopic bile examination Idiopathic pancreatitis Acute Diagnosis

FAIR Computational Workflows

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Data Intelligence 2020年第1期2卷 108-121,307,308,309页

作者： Carole Goble Sarah Cohen-Boulakia Stian Soiland-Reyes Daniel Garijo yolanda Gil Michael R.Crusoe Kristian Peters Daniel Schober Department of Computer Science The University of ManchesterOxford RoadManchester M139PLUK Laboratoire de Recherche en Informatique CNRSUniversitéParis-SaclayBatiment 650UniversitéParis-Sud91405 ORSAY CedexFrance Information Sciences Institute University of Southern CaliforniaMarina Del Rey CA 90292USA Common Workflow Language project Software Freedom ConservancyInc.137 Montague St STE 380NY 11201-3548USA Leibniz Institute of Plant Biochemistry(IPB Halle) Department of Biochemistry of Plant InteractionsWeinberg 306120 Halle(Saale)Germany

Computational workflows describe the complex multi-step methods that are used for data collection,data preparation,analytics,predictive modelling,and simulation that lead to new data *** can inherently contribute to the FAIR data principles:by processing data according to established metadata;by creating metadata themselves during the processing of data;and by tracking and recording data *** properties aid data quality assessment and contribute to secondary data ***,workflows are digital objects in their own *** paper argues that FAIR principles for workflows need to address their specific nature in terms of their composition of executable software steps,their provenance,and their development.

关键词： Computational workflow Reproducibility Software FAIR data Provenance

European Species of Hebeloma Section Theobromina

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Fungal Diversity 2013年第1期58卷 103-126页

作者： Ursula Eberhardt Henry J.Beker Jan Vesterholt Karolina Dukik Grit Walther Jordi vila Samantha Fernández Brime CBS-KNAW Fungal Biodiversity Centre Centraalbureau voor SchimmelculturesUppsalalaan 83584 CT UtrechtNetherlands Rue Père de Deken 19 1040 BruxellesBelgium Natural History Museum of Denmark Gothersgade 1301123 Copenhagen K.Denmark Microbial Resource Collection Leibniz Institute for Natural Product Research and Infection Biology-Hans Knöll Institute and Institute of MicrobiologyDepartment of Microbiology and Molecular BiologyUniversity of JenaBeutenbergstraße 11a07745 JenaGermany Department Biologia Vegetal(Botànica) Fac.BiologiaUniversitat de BarcelonaDiagonal 64508028 BarcelonaSpain

This paper addresses section Theobromina within the genus Hebeloma(Agaricales).We recognise seven European species within this section,three of which are described as new:Hebeloma alboerumpens,*** and *** first two of these species appear to be ectomycorrhizal with Cistaceae:Cistus and *** parvicystidiatum is more likely to be in mycorrhizal association with Quercus *** also provide a key to the European species within *** and an updated key of known Hebeloma associates of *** analyses based on multiple loci further illustrate the distinctness of the newly described taxa and provide molecular evidence,supporting the morphological evidence,for the relationship that exists among species of this *** ITS is the only one from the sequenced loci that,alongside with morphology,distinguishes among all of the species of *** section gains most of its molecular support from the MCM7 locus,followed by RPB2.

关键词： Host specificity Fungi Hebeloma plesiocistum Hebeloma theobrominum Hebeloma vesterholtii DNA barcode

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Countenbeit Chic

中国服装（北京） 2008年第1期 64-65页

作者： yolanda Wu（编译） Susun Scafidi

时尚没有统一的标准，美是一种主观的判断。虽然已有中国服装界的人士在呼吁中国的时尚话语权，但国外时尚对世界潮流的引领仍是不争的事实。我们仍要保持追赶的姿态。于是，请国外设计师、代理国外服装品牌、参加国外展会…我们想更近... 详细信息

时尚没有统一的标准，美是一种主观的判断。虽然已有中国服装界的人士在呼吁中国的时尚话语权，但国外时尚对世界潮流的引领仍是不争的事实。我们仍要保持追赶的姿态。于是，请国外设计师、代理国外服装品牌、参加国外展会…我们想更近距离地触摸国外时尚产业。但显然，因为各种因素。不是所有的人都有机会，不是所有的层面都能看到。源于此，我们特别推出了几位国外知名人士的时尚博客。他们有的是记者，有的专业是法律，还有的长年游走于全球的时尚舞台。他们与时尚的距离，能让我们对国外时尚看得更清楚。

关键词：中国时尚服装业博客

Natural variability of essential oil and antioxidants in the medicinal plant Turnera diffusa

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Asian Pacific Journal of Tropical Medicine 2017年第2期10卷 114-119页

作者： Ana Lucía Urbizu-González Octelina Castillo-Ruiz Guillermo Cristian Guadalupe Martínez-Ávila Jorge Ariel Torres-Castillo Universidad Autónoma de Tamaulipas Instituto de Ecología AplicadaDivisión del Golfo 356Col.Libertad87019Ciudad VictoriaTamaulipasMéxico Universidad Autónoma de Tamaulipas Unidad Académica Multidisciplinaria Reynosa AztlánCalle 16 y Lago de Chápala s/n Col.AztlánC.P.88740ReynosaTamaulipasMéxico Universidad Autónoma de Nuevo León Facultad de AgronomíaFrancisco Villa s/n.Col.Ex Hacienda El Canadá66050General EscobedoNuevo LeónMéxico

Objective:To evaluate differences in yield and composition of the essential oil and antioxidant contents in *** plants from localities in central region of ***:Samples were collected in Tamaulipas,Mexico in the arid *** oil was obtained through steam distillation and analyzed using *** contents,antioxidant activities using ABTS and ferric reducing antioxidant power(FRAP) methods also were ***:A total of 21 compunds were identified in the essential oils;nevertheless,only Eucalyptol,1,4-Methanocycloocta[d]pyridazine,1,4,4a,5,6,9,10,10a-octahydro-11,11-dimethyl-,(1à,4à,4aà,10aà) y Ethanone,1-(1,3-dimethyl-3-cyclohexen-1-yl) were detected in the three *** contents were registered in the sample from Padrón y Juárez with phenolic content of 33.85 mg GAE/g of dry material and antioxidant activities with ABTS 72.32% and with FRAP 21.33 mg GAE/g of dry *** differences were observed in essential oil,phenolics and antioxidants contents between ***:Results suggest that climatic differences and origin influence the phytochemicals in the medicinal plant ***,and thus,it is worth to consider such effects for industrial and medicinal purposes.

关键词： Essential oil Antioxidants Phytochemicals Chemical variation

Effects of the allelopathic plant Artemisia herba-alba Asso on the soil seed bank of a semi-arid plant community

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Journal of Plant Ecology 2017年第6期10卷 927-936页

作者： Antonio I.Arroyo yolanda Pueyo Ramón Reiné Maria Luz Giner Concepción L.Alados Instituto Pirenaico de Ecología(CSIC) Av.Montañana 1005P.O.Box 13.034Zaragoza 50080Spain Escuela Politécnica Superior(Universidad de Zaragoza) Ctra.Cuarte s/nHuesca 22071Spain

Aims Seed bank strongly influences composition and structure of above-ground *** attention has been paid to the role of allel-opathy driving soil seed bank dynamics,even though allelochemicals released by allelopathic plants might determine whether a species can or cannot germinate from the soil seed bank and,therefore,to co-exist in the neighborhood of the allelopathic ***,the effects of allelopathic plants on community organization through the effects of allelochemicals on soil seed bank remain largely *** this study,we assessed spatial heterogeneities in soil seed bank caused by the presence of allelopathic plants,and evaluated allelo-pathic effects on seed bank germination and seedling *** We examined the effects of the allelopathic shrub Artemisia herba-alba Asso on the spatial structure(in terms of species richness and seed density)of the soil seed bank of a semi-arid ecosystem in NE ***,we evaluated seed bank richness and density at three microsites:under the canopy of ***-alba individuals,under the canopy of Salsola vermiculata L.(a non-allelopathic shrub)individuals,and in bare *** addition,we assessed the effects of aqueous extract of ***-alba on soil seed bank germination(seed-ling emergence and emergence timing)and seedling *** Findings We found that seed bank richness and density were higher under shrub canopy than they were in bare ***-alba and *** microsites had similar seed bank ***,seed bank density was higher under ***-alba because of the high abundance of ***-alba *** extract reduced seedling emergence from the seed bank by 50%,and affected mortality of some emerged *** the other hand,aqueous extract did not influence the emergence timing of *** conclude that,although the presence of allelo-pathic plants does not cause relevant changes in seed bank struc-ture relative to similar non-allelopathi

关键词： allelopathic shrub aqueous extract Middle Ebro Valley seed bank inhibition seed bank density seedling emergence