2011 Home Demonstration Gardens

Themes for the 2011 Home Demonstration Garden Field Days included 1) a storybook garden (vegetables and annual flowers named after characters in classic fairytales), 2) warty pumpkins, 3) new flowers and vegetables, 4) summer squash named after types of cats, 5) pole beans, and 6) sunflowers without pollen for use as cut flowers.

2010 Home Demonstration Gardens

Themes for the 2010 Home Demonstration Garden Field Days were several newer cultivars of annual flowers (zinnia, four o’clocks, gazania, gaillardia, petunia, coleus, and vinca), a blooming quilt block, eggplant cultivars (including an inedible eggplant), and a compost trial.

2011 Home Demonstration Gardens

Themes for the 2011 Home Demonstration Garden Field Days included 1) a storybook garden (vegetables and annual flowers named after characters in classic fairytales), 2) warty pumpkins, 3) new flowers and vegetables, 4) summer squash named after types of cats, 5) pole beans, and 6) sunflowers without pollen for use as cut flowers.

La concepción pragmática de la verdad. Diálogo entre William James y Bertrand Russell

Fil: Di Berardino, María Aurelia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La teoría emotivista de los valores de Bertrand Russell

Los asuntos éticos constituyeron una de las preocupaciones fundamentales de Bertrand Russell a lo largo de su vida. Luego de un pasar por un período caracterizado por una visión objetivista e intuicionista de los valores,Russell fue uno de los primeros en desarrollar una teoría emotivista de los valores. El objetivo de este artículo es presentar esta teoría a la vez que examinar los fundamentos en que se sostiene y mostrar sus implicancias.

La teoría emotivista de los valores de Bertrand Russell

Los asuntos éticos constituyeron una de las preocupaciones fundamentales de Bertrand Russell a lo largo de su vida. Luego de un pasar por un período caracterizado por una visión objetivista e intuicionista de los valores,Russell fue uno de los primeros en desarrollar una teoría emotivista de los valores. El objetivo de este artículo es presentar esta teoría a la vez que examinar los fundamentos en que se sostiene y mostrar sus implicancias.

La concepción pragmática de la verdad. Diálogo entre William James y Bertrand Russell

Fil: Di Berardino, María Aurelia. Universidad Nacional de La Plata. Facultad de Humanidades y Ciencias de la Educación; Argentina.

La teoría emotivista de los valores de Bertrand Russell

Los asuntos éticos constituyeron una de las preocupaciones fundamentales de Bertrand Russell a lo largo de su vida. Luego de un pasar por un período caracterizado por una visión objetivista e intuicionista de los valores,Russell fue uno de los primeros en desarrollar una teoría emotivista de los valores. El objetivo de este artículo es presentar esta teoría a la vez que examinar los fundamentos en que se sostiene y mostrar sus implicancias.

Bioaccessibility of heavy metals and risk assessment in urban gardens of Madrid

Human health problems and solutions. Urban gardening has spread worldwide in recent years as it enhances food security and selfsupply and promotes community integration. However urban soils are significantly enriched in trace elements relative to background levels. Exposure to the soil in urban gardens may therefore result in adverse health effects depending on the degree of contact during gardening, infant recreational activities and ingestion of vegetables grown in them. In order to evaluate this potential risk, 36 composite samples were collected from the top 20 cm of the soil of 6 urban gardens in Madrid. The aqua regia (pseudototal) and glycine-extractable (bioaccessible) concentrations of Co, Cr, Cu, Ni, Pb and Zn were determined by atomic absorption spectrophotometry. Additionally, pH, texture, Fe, Ca, and Mn concentrations, and organic matter and calcium carbonate contents were determined in all urban gardens and their influence on trace element bioaccessibility was analyzed.

Bioaccessibility of metals and human health risk assessment in community urban gardens

Pseudo-total (i.e. aqua regia extractable) and gastric-bioaccessible (i.e. glycine + HCl extractable) concentrations of Ca, Co, Cr, Cu, Fe, Mn, Ni, Pb and Zn were determined in a total of 48 samples collected from six community urban gardens of different characteristics in the city of Madrid (Spain). Calcium carbonate appears to be the soil property that determines the bioaccessibility of a majority of those elements, and the lack of influence of organic matter, pH and texture can be explained by their low levels in the samples (organic matter) or their narrow range of variation (pH and texture). A conservative risk assessment with bioaccessible concentrations in two scenarios, i.e. adult urban farmers and children playing in urban gardens, revealed acceptable levels of risk, but with large differences between urban gardens depending on their history of land use and their proximity to busy areas in the city center. Only in a worst-case scenario in which children who use urban gardens as recreational areas also eat the produce grown in them would the risk exceed the limits of acceptability

Valencia, view from the Botanical Gardens [ [Material gráfico]

Resumen: Vista de San Pio V y una parte de la ciudad desde el antiguo Jardin del Real.