50 research outputs found
The Visitor, January 1974, Vol. LXI, No. 1
No full textUniversity of Minnesota. Division of Agricultural Education. (1974). The Visitor, January 1974, Vol. LXI, No. 1. Retrieved from the University Digital Conservancy, https://hdl.handle.net/11299/162178
Senecio lanceus (162178)
No full textKingdom: PlantaeDivision: MagnoliophytaClass: EudicotsOrder: AsteralesFamily: AsteraceaeScientific name: Senecio lanceus AitonSpecimen barcode: 16217
The impacts of urbanisation on urban soil carbon- a study of Manchester, UK
No full textThe study of anthropogenic soils is a growing area of interest, and as cities continue to expand, urban soils are heavily influenced by human activities. Urbanisation exhibits a wide range of impacts on soil, from buried horizons, compaction, sealing with impervious surfaces, additions of anthropogenic material to being largely man-made soils, or technosols. The properties of urban soil are further complicated by the addition of fertilisers, management strategies in greenspaces and the treatments of soil, including topsoil removal, during construction projects. Therefore, the properties and functions of anthropogenic soils differ notably to that of natural soils, and as such, there is a need to understand the dynamics of soil carbon in urban areas.Research on urban soil carbon has been relatively limited, however there is recent growth in this area due to its importance, firstly, as a carbon store contributing to climate regulation, and secondly, in relation to the potential of urban soil to support numerous ecosystem services. Urban soils are highly heterogeneous and anthropogenic carbon additions can come from many current or historical sources, such as charcoal used in old roads, coal ash from power stations, carbon from car tyres, as well as inorganic carbonates in limestone road foundations. Understanding the current stores of carbon, as well as how stable it is, is important to understand likely carbon dynamics and storage potential.This work presents a field study across Manchester (UK) where soil carbon data has been collected from soils across urban parks, greenspaces and from under sealed surfaces (roads and pavements). It provides carbon data for a variety of urban contexts and with high spatial variability. We will build on previous work from this field study by presenting i) a typology of urban soils according to anthropogenic content, ii) data for physical size fractionation to understand soil physical properties and texture, and iii) the carbon content of the size fractions to provide a proxy for understanding how labile or stable the carbon is. This will allow us to understand the impacts of soil sealing on the carbon content and build a picture of soil carbon stability across a range of urban situations.This research will contribute to the much-needed understanding on how soil carbon behaves in urban areas, and the implications of this for carbon storage in both sealed and urban greenspace soils
Spiritual care en devenir : elaboration d’un nouveau champ de recherche et de pratique interdisciplinaires
No full textDirect killing assay with anti-Lewis<sup>y</sup> and Lewis<sup>b</sup> mAbs.
No full text<p>Anti-Lewis<sup>y</sup> and Lewis<sup>b</sup> mAbs, 692/29 2-25 LE and BR96 were screened for direct killing by uptake of PI and flow cytometric analysis. (A) A range of cell lines were incubated with 692/29, BR96, 2-25 LE or an isotype control overnight at 37°C. (B) C170 cells were incubated with 30 µg/ml 692/29, 692/42 and 2-25 LE either alone, or with rabbit anti-mouse or rabbit anti-mouse and goat anti-rabbit mAbs overnight at 37°C. (C) C170 cells were incubated with 30 µg/ml 692/29, 2-25 LE and BR96 with and without a pan caspase inhibitor overnight at 37°C. Jurkat cells were incubated with 500 µg/ml anti-Fas as a positive control. (D) C170 cells were incubated with 30 µg/ml mAb and 3, 400 and 500 K MW dextran-FITC beads or PI overnight at 37°C before measuring uptake using flow cytometry. Treatment with 0.4% saponin was used as a positive control for bead uptake. Anti-Fas treatment of Jurkat cells was used as a control for apoptosis (negative control for 500 kMW dextran uptake). This assay was repeated 3 times and one representative result is shown.</p
The Influence of Lactate Concentration and Oxygen on the Current Production and Biofilm Formation of Shewanella oneidensis MR-1 on Electrospun Anodes
No full textReflexiones sobre las prácticas de enseñanza del sistema de escritura desde el rol de co-formación con estudiantes magisteriales
No full textEste trabajo se enmarca en la indagación de las reflexiones que estudiantes magisteriales dan cuenta a través de sus notas de observación de clases de enseñanza del sistema de escritura llevadas a cabo por el maestro co-formador, así como de las consideraciones surgidas en los espacios colectivos posteriores destinados al análisis de ellas. Este trabajo pretende favorecer y propiciar la reflexión sobre las prácticas de enseñanza del sistema de escritura en un aula de primer grado escolar, desde el rol de co-formadora, con estudiantes practicantes de tercer año de magisterio. Pone en énfasis el lugar preponderante que le dan en sus observaciones las estudiantes magisteriales a los niveles de conceptualización de los niños, a las intervenciones docentes, a la interacciones de los niños y a las condiciones didácticas tiene relación con el dispositivo elaborado de doble agenda.Fil: Paredes, María Luisa. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina
