Molekularbiologische Charakterisierung von Pilzen in Paddy Soils

Pilze haben in Reisböden (Paddy Soils) eine große Bedeutung für den Abbau von Reis-stroh. Ihre Aktivität und Diversität wird dabei im Wesentlichen durch die sich im Laufe einer Reisanbauphase ändernden Feuchte-zustände beeinflusst. Da durch Verfahren der Kultivierung nur ein geringer Teil der im Boden vorhandenen Pilze erfasst werden kann, wurden moleku-larbiologische Methoden eingesetzt, um die Pilzgemeinschaften in drei unterschiedlichen Paddy Soils Süd-Ost Chinas zu untersuchen. Mit diesem Ansatz konnten Populationsshifts aufgezeigt werden, die sowohl durch die Austrocknung von Paddy Soils als auch durch unterschiedliche Reisstrohapplikatio-nen hervorgerufen wurden

New Market Plains Vineyard Redesign

Final Project for LARC 340 Site Planning and Design Studio (Fall 2018). University of Maryland, College Park.New Market Plains Vineyard is situated on a 260+ acre farm in the town of New Market within Fredrick County, Maryland. The town of New Market and the owners of New Market Plains Vineyard, in coordination with the Partnership for Action Learning in Sustainability (PALS) and undergraduate Landscape Architecture students at the University of Maryland, are interested in developing the site to support and expand amenities available to visitors. Because the property has been in the family since its acquisition in 1747, the owners have a strong tie to the land and hope to continually display its historical significance and interpretive natural systems as part of the project, as they expand the event potential and expanded operations of the winery. The town of New Market is interested in promoting tourism and sharing in the rich history of the site. The site is impacted by highway noise, rock outcroppings, invasive plant species and some hydric soils. The attributes include vistas to the surrounding countryside, abundant water supply, meadows, grasslands, forest, elevation and exposure suitable for growing grapes, and excellent public access. To approach this project, four design teams were tasked with identifying the site’s opportunities and constraints with a focus on historic qualities, natural systems, and expanding vineyard operations. Each team expanded on these opportunities and constraints, some placing emphasis on business operations and others on historic value and educational opportunities. Using this analysis of the existing site conditions, the teams developed individual design programs of what elements they felt would best realize the property’s full potential. The teams made two visits to the site over the course of the project, to locate and identify areas of significance to their designs. Halfway through the design process the teams delivered an interim presentation to the vineyard owners; to receive feedback on the direction their work was taking. Using this review the teams completed their final designs, which include a master plan for the site, an enlarged plan for the main winery complex, and a grading plan for a new underground wine storage facility. The size of the site facilitated the implementation of nature trails of varying difficulty, which each team has incorporated in their design. Each individual member of the class also participated in a competition to design the new entry sign for the vineyard. The winning sign was designed by Rachel Greenhawk and is displayed on the cover of this document. Compiled in this booklet are the materials produced by the teams over the duration of this project. The results are a diverse and innovative selection of proposals, with the goal of serving as an examination of possibilities for future development. These designs provide the owners with various suggestions for how to restore their property and to elevate New Market Plains Vineyards into a thriving local destination.Prince George's Count

Time-Use Patterns and Sustainable Urban Form: A Case Study to Explore Potential Links

Linking time use of the inhabitants of a city with their energy consumption and urban form is an approach which allows integration of the social dimension into research on sustainable urban development. While much has been written about the planning of cities and its implications for human social life, the question of the relationship between time-use patterns and urban form remains underexplored. This is all the more astonishing as time-use statistics offer a unique tool for analysing socio-economic changes regarding family and household structures, gender relations, working hours, recreational behaviour and consumption patterns. Furthermore, spatial planning plays a significant role in establishing time structures. With this paper we aim to explore the possibility of using the time-use data of an urban population to find links between individual time-use patterns and urban form. We describe a case study in Vienna where we addressed time use and mobility of citizens in a participatory approach to jointly develop an integrated socio-ecological model of urban time-use patterns and energy consumption

Simulation numérique du champ de contraintes au sein de matières granulaires ensilées – comparaison avec les mesures in situ

L'article présente une simulation numérique des contraintes dans les silos métalliques à partir du programme d'éléments finis SILO (Université de Karlsruhe) utilisant les lois de comportement des milieux granulaires de P.V. LADE et de D. KOLYMBAS. Les résultats numériques sont comparés aux résultats expérimentaux obtenus dans les silos réels de la base de Chartres. L'influence des paramètres géométriques des silos et des caractéristiques mécaniques de la matière ensilée sur les contraintes pariétales complète cette étude

Different collector types for sampling deposition of polycyclic aromatic hydrocarbons - comparison of measurement results and their uncertainty

International audienceDifferent collector types, sample workup procedures and analysis methods to measure the deposition of polycyclic aromatic hydrocarbons (PAH) were tested and compared. Whilst sample workup and analysis methods did not influence the results of PAH deposition measurements, using different collector types changed the measured deposition rates of PAH significantly. The results obtained with a funnel-bottle collector showed the highest deposition rates and a low measurement uncertainty. The deposition rates obtained with the wet-only collectors were the lowest at industrial sites and under dry weather conditions. For the open-jar collectors the measurement uncertainty was high. Only at an industrial site with extremely high PAH deposition rates the results of open-jar collectors were comparable to those obtained with funnel-bottle collectors. Thus, if bulk deposition of PAH has to be measured, funnel-bottle combinations are proved to be the collectors of choice. These collectors were the only ones always fulfilling the requirements of European legislation

Prince George County Public Schools: Suitland High School & William Wirt Middle School

Final project for LARC240 Graphic Communication and Design Studio (Spring 2018). University of Maryland, College Park.Prince George's Count

Critical physiological factors influencing the outcome of antimicrobial testing according to ISO 22196 / JIS Z 2801

<div><p>Bactericidal materials gained interest in the health care sector as they are capable of preventing material surfaces from microbial colonization and subsequent spread of infections. However, commercialization of antimicrobial materials requires proof of their efficacy, which is usually done using <i>in vitro</i> methods. The ISO 22196 standard (Japanese test method JIS Z 2801) is a method for measuring the antibacterial activity of daily goods. As it was found reliable for testing the biocidal activity of antimicrobially active materials and surface coatings most of the laboratories participating in this study used this protocol. Therefore, a round robin test for evaluating antimicrobially active biomaterials had to be established. To our knowledge, this is the first report on inaugurating a round robin test for the ISO 22196 / JIS Z 2801. The first round of testing showed that analyses in the different laboratories yielded different results, especially for materials with intermediate antibacterial effects distinctly different efficacies were noted. Scrutinizing the protocols used by the different participants and identifying the factors influencing the test outcomes the approach was unified. Four critical factors influencing the outcome of antibacterial testing were identified in a series of experiments: (1) incubation time, (2) bacteria starting concentration, (3) physiological state of bacteria (stationary or exponential phase of growth), and (4) nutrient concentration. To our knowledge, this is the first time these parameters have been analyzed for their effect on the outcome of testing according to ISO 22196 / JIS Z 2801. In conclusion, to enable assessment of the results obtained it is necessary to evaluate these single parameters in the test protocol carefully. Furthermore, uniform and robust definitions of the terms antibacterial efficacy / activity, bacteriostatic effects, and bactericidal action need to be agreed upon to simplify communication of results and also regulate expectations regarding antimicrobial tests, outcomes, and materials.</p></div