228 research outputs found

    Mehr als Grün : Profilkatalog naturnahe Pflege

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    Im Projekt «Praxismodule für naturnahe Pflege» wurden Fachwissen, und Handlungsanleitungen zur Etablierung naturnaher Pflege und der Förderung der Biodiversität in urbanen Grünräumen, sowie zum schonenderen Umgang mit Ressourcen (Material, Betriebsmittel, Arbeitszeiten) vermittelt. Das Ziel des Projekts war es, durch die Förderung und Umsetzung naturnaher Pflegemassnahmen die Artenvielfalt sowie den schonenden Umgang mit Ressourcen in urbanen Grünräumen zu fördern. Im Rahmen des Projekts wurden zwei Produkte zur Förderung naturnaher Pflege von urbanen Grünräumen entwickelt: Der vorliegende Profilkatalog zur naturnahen Pflege verschiedener Grünraumprofile, sowie ein Praxishandbuch, inklusive objektbezogener Pflegeübersichtspläne und Jahrespflegeplaner. Der Profilkatalog dient der Definition der einzelnen Profile, ihrer Einordnung in das Spannungsfeld von Nutzung, Gestaltung und ökologischem Potential sowie dem Beschrieb naturnaher Pflege- und weiterer Förderungs- und Entwicklungsmassnahmen. Er ist als Nachschlagewerk und Weiterbildungsinstrument konzipiert

    Establish data infrastructure to compile and exchange environmental screening data on a European scale

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    Robust techniques based on liquid (LC) and gas chromatography (GC) coupled with high-resolution mass spectrometry (HR-MS) enable sensitive screening, identification, and (semi)quantification of thousands of substances in a single sample. Recent progress in computational sciences has enabled archiving and processing of HR-MS ‘big data’ at the routine level. As a result, community-based databases containing thousands of environmental pollutants are rapidly growing and large databases of substances with unique identifiers allowing for inter-comparison at the global scale have become available. A data-archiving infrastructure is proposed, allowing for retrospective screening of HR-MS data, which will help define the ‘chemical universe’ of organic substances and enable prioritisation of toxicants causing adverse environmental effects at the local, river basin, and national and European scale in support of the European water and chemicals management policy

    High-resolution mass spectrometry to complement monitoring and track emerging chemicals and pollution trends in European water resources

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    Currently, chemical monitoring based on priority substances fails to consider the majority of known environmental micropollutants not to mention the unexpected and unknown chemicals that may contribute to the toxic risk of complex mixtures present in the environment. Complementing component- and effect-based monitoring with wide-scope target, suspect, and non-target screening (NTS) based on high-resolution mass spectrometry (HRMS) data is recommended to support environmental impact and risk assessment. This will allow for detection of newly emerging compounds and transformation products, retrospective monitoring efforts, and the identification of possible drivers of toxicity by correlation with effects or modelling of expected effects for future and abatement scenarios. HRMS is becoming increasingly available in many laboratories. Thus, the time is right to establish and harmonize screening methods, train staff, and record HRMS data for samples from regular monitoring events and surveys. This will strongly enhance the value of chemical monitoring data for evaluating complex chemical pollution problems, at limited additional costs. Collaboration and data exchange on a European-to-global scale is essential to maximize the benefit of chemical screening. Freely accessible data platforms, inter-laboratory trials, and the involvement of international partners and networks are recommended

    Mehr als Grün : Praxishandbuch naturnahe Pflege

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    Im Projekt «Praxismodule für naturnahe Pflege» wurden Fachwissen, und Handlungsanleitungen zur Etablierung naturnaher Pflege und der Förderung der Biodiversität in urbanen Grünräumen, sowie zum schonenderen Umgang mit Ressourcen (Material, Betriebsmittel, Arbeitszeiten) vermittelt. Das Ziel des Projekts war es, durch die Förderung und Umsetzung naturnaher Pflegemassnahmen die Artenvielfalt sowie den schonenden Umgang mit Ressourcen in urbanen Grünräumen zu fördern. Im Rahmen des Projekts wurden zwei Produkte zur Förderung naturnaher Pflege von urbanen Grünräumen entwickelt: Ein Profilkatalog zur naturnahen Pflege verschiedener Grünraumprofile, sowie das vorliegende Praxishandbuch, inklusive objektbezogener Pflegeübersichtspläne und Jahrespflegeplaner. Das Praxishandbuch fasst die Quintessenz einer naturnahen Pflege zusammen und dient der schnellen Informationsgewinnung in der Praxis. Der Jahrespflegeplan gibt Auskunft über alle durchzuführenden Pflegearbeiten, deren Zeitpunkt, Intervalle sowie benötigte Materialien und Maschine

    Occurrence and distribution of resistance to QoI fungicides in populations of Podosphaera fusca in south central Spain

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    Cucurbit powdery mildew caused by Podosphaera fusca limits crop production in Spain. Since its management is strongly dependent on chemicals, the rational design of control programmes requires a good understanding of the fungicide resistance phenomenon in field populations. Fifty single-spore isolates of P. fusca were tested for sensitivity to three quinone-outside inhibiting (QoI) fungicides: azoxystrobin, kresoxim-methyl and trifloxystrobin. Minimum inhibitory concentration (MIC) values for QoI-sensitive isolates were found to range from 0.25 to 10 μg ml−1 for azoxystrobin to 5–25 μg ml−1 for kresoxim-methyl, using a leaf disc-based bioassay. High levels of cross-resistance to QoI fungicides were found. Eleven isolates showed resistance to the three QoI fungicides tested with MIC and EC50 values >500 μg ml−1 resulting in RF values as high as >715 and >1000 for trifloxystrobin and azoxystrobin, respectively. A survey of P. fusca QoI resistance was carried out in different provinces located in the south central area of Spain during the cucurbit growing seasons in 2002, 2003 and 2004. Examination of a collection of 250 isolates for QoI resistance revealed that 32% were resistant to the three fungicides tested; the provinces of Ciudad Real, Córdoba and Murcia being the locations with the highest frequencies of resistance (44–74%). By contrast, no resistance was found in Badajoz, and relatively low frequencies were observed in Almería and Valencia (10–13%). Nearly 50% of resistant isolates were collected from melon plants. Based on these data, recommendations about the use of QoI fungicides for cucurbit powdery mildew management in the sampled areas are made.Estación Experimental “La Mayora” (CSIC), Algarrobo-Costa, E-29750 Málaga, Spain Grupo de Microbiología y Patología Vegetal-Unidad Asociada a CSIC, Departamento de Microbiología, Facultad de Ciencias, Universidad de Málaga, E-29071 Málaga, SpainPeer reviewe

    Use of Lambert's Theorem for the n-Dimensional Coulomb Problem

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    We present the analytical solution in closed form for the semiclassical limit of the quantum mechanical Coulomb Green function in position space in n dimensions. We utilize a projection method which has its roots in Lambert's theorem and which allows us to treat the system as an essentially one dimensional problem. The semiclassical result assumes a simple analytical form and is well suited for a numerical evaluation. The method can also be extended to classically forbidden space regions. Already for moderately large principal quantum numbers nu >= 5, the semiclassical Green function is found to be an excellent approximation to the quantum mechanical Green function.Comment: 11 pages, 7 figures. Accepted in Phys. Rev.

    I-BEAT: New ultrasonic method for single bunch measurement of ion energy distribution

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    The shape of a wave carries all information about the spatial and temporal structure of its source, given that the medium and its properties are known. Most modern imaging methods seek to utilize this nature of waves originating from Huygens' principle. We discuss the retrieval of the complete kinetic energy distribution from the acoustic trace that is recorded when a short ion bunch deposits its energy in water. This novel method, which we refer to as Ion-Bunch Energy Acoustic Tracing (I-BEAT), is a generalization of the ionoacoustic approach. Featuring compactness, simple operation, indestructibility and high dynamic ranges in energy and intensity, I-BEAT is a promising approach to meet the needs of petawatt-class laser-based ion accelerators. With its capability of completely monitoring a single, focused proton bunch with prompt readout it, is expected to have particular impact for experiments and applications using ultrashort ion bunches in high flux regimes. We demonstrate its functionality using it with two laser-driven ion sources for quantitative determination of the kinetic energy distribution of single, focused proton bunches.Comment: Paper: 17 Pages, 3 figures Supplementary Material 16 pages, 7 figure

    Разработка расчетных методов определения характеристик индустриальных масел

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    В ходе работы проанализированы характеристики индустриального масла марки И-20А, с использованием метода множественного регрессионного анализа разработаны расчетные способы определения характеристик индустриального масла, сделан вывод о точности разработанных методов, определены наиболее точные методы.In the course of the work, the characteristics of I-20A industrial oil were analyzed, using the multiple regression analysis method, calculation methods for determining the characteristics of industrial oil were developed, a conclusion was made on the accuracy of the developed methods, and the most accurate methods were determined

    Altered fibrin clot structure and dysregulated fibrinolysis contribute to thrombosis risk in severe COVID-19

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    The high incidence of thrombotic events suggests a possible role of the contact system pathway in COVID-19 pathology. Here, we demonstrate altered levels of factor XII (FXII) and its activation products in critically ill COVID-19 patients in comparison to patients with severe acute respiratory distress syndrome due to influenza virus (ARDS-influenza). Compatible with this data, we report rapid consumption of FXII in COVID-19, but not in ARDS-influenza, plasma. Interestingly, the lag phase in fibrin formation, triggered by the FXII activator kaolin, was not prolonged in COVID-19 as opposed to ARDS-influenza. Using confocal and electron microscopy, we showed that increased FXII activation rate, in conjunction with elevated fibrinogen levels, triggers formation of fibrinolysis-resistant, compact clots with thin fibers and small pores in COVID-19. Accordingly, clot lysis was markedly impaired in COVID-19 as opposed to ARDS-infleunza subjects. Dysregulatated fibrinolytic system, as evidenced by elevated levels of thrombin-activatable fibrinolysis inhibitor, tissue-plasminogen activator, and plasminogen activator inhibitor-1 in COVID-19 potentiated this effect. Analysis of lung tissue sections revealed wide-spread extra- and intra-vascular compact fibrin deposits in COVID-19 patients. Together, compact fibrin network structure and dysregulated fibrinolysis may collectively contribute to high incidence of thrombotic events in COVID-19
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