Estudio de Análogos Naturales de Captura y Almacenamiento de CO2: Relación Radón (222Rn) - Torón (220Rn)

La Fundación Ciudad de la Energía (CIUDEN) está desarrollando un proyecto de almacenamiento geológico de CO2. El área seleccionada para la colocación de la planta piloto de desarrollo tecnológico se encuentra en las proximidades de la localidad de Hontomín (Burgos, España). Dentro de los objetivos de este proyecto se encuentra el desarrollo y puesta a punto de una metodología no intrusiva/invasiva que permita mejorar el conocimiento de formaciones geológicas a partir del registro en superficie de la emisión de gases de origen natural. Para cumplir con parte de este objetivo, se ha realizado un estudio de los flujos y de la relación entre las actividades de radón (222Rn) y torón (220Rn) asociados a flujos altos de CO2. El área de estudio se encuentra en la zona volcánica de Campo de Calatrava de la provincia de Ciudad Real en España. Dado que los flujos muy altos (566 a 2011 g/m2•dia) de CO2 son puntuales en el emplazamiento de estudio, éstos podrían equipararse a escapes puntuales en zonas de debilidad de un almacenamiento comercial de CO2. Los resultados obtenidos indican que los flujos altos de CO2 conllevan actividades muy altas de 222Rn (118398 Bq/m3), y altas relaciones radón-torón, ya que se observa una disminución de las concentraciones de torón. Abstract The Fundación Ciudad de la Energía (CIUDEN) is presently developing a project of geological storage of CO2. The selected area is close to Hontomín town (Burgos, Spain). One of the aim objectives of this project is the development and testing of a non-intrusive/invasive methodology to improve our knowledge of geological formations from the surface record of the emission of soil gas. To meet part of this goal, a survey of 222Rn and 220Rn measurements has been performed at a site called La Sima, located in volcanic area of Campo de Calatrava (Ciudad Real, Spain) which is characterized by high fluxes of CO2 (566 a 2011 g/m2•dia). These high, point-source fluxes can be considered as analogues of potential leakages in commercial storages. The obtained results show a clear correlation between high flux of CO2 and very high activities of 222Rn (118398 Bq/m3). In contrast, activity of 220Rn is significantly low and consequently high ratios of radon-thoron are measured.

Tree height integrated into pantropical forest biomass estimates

Aboveground tropical tree biomass and carbon storage estimates commonly ignore tree height (H). We estimate the effect of incorporating H on tropics-wide forest biomass estimates in 327 plots across four continents using 42 656 H and diameter measurements and harvested trees from 20 sites to answer the following questions: 1. What is the best H-model form and geographic unit to include in biomass models to minimise site-level uncertainty in estimates of destructive biomass? 2. To what extent does including H estimates derived in (1) reduce uncertainty in biomass estimates across all 327 plots? 3. What effect does accounting for H have on plot- and continental-scale forest biomass estimates? The mean relative error in biomass estimates of destructively harvested trees when including H (mean 0.06), was half that when excluding H (mean 0.13). Power- andWeibull-H models provided the greatest reduction in uncertainty, with regional Weibull-H models preferred because they reduce uncertainty in smaller-diameter classes (?40 cm D) that store about one-third of biomass per hectare in most forests. Propagating the relationships from destructively harvested tree biomass to each of the 327 plots from across the tropics shows that including H reduces errors from 41.8Mgha?1 (range 6.6 to 112.4) to 8.0Mgha?1 (?2.5 to 23.0). For all plots, aboveground live biomass was ?52.2 Mgha?1 (?82.0 to ?20.3 bootstrapped 95%CI), or 13%, lower when including H estimates, with the greatest relative reductions in estimated biomass in forests of the Brazilian Shield, east Africa, and Australia, and relatively little change in the Guiana Shield, central Africa and southeast Asia. Appreciably different stand structure was observed among regions across the tropical continents, with some storing significantly more biomass in small diameter stems, which affects selection of the best height models to reduce uncertainty and biomass reductions due to H. After accounting for variation in H, total biomass per hectare is greatest in Australia, the Guiana Shield, Asia, central and east Africa, and lowest in eastcentral Amazonia, W. Africa, W. Amazonia, and the Brazilian Shield (descending order). Thus, if tropical forests span 1668 million km2 and store 285 Pg C (estimate including H), then applying our regional relationships implies that carbon storage is overestimated by 35 PgC (31?39 bootstrapped 95%CI) if H is ignored, assuming that the sampled plots are an unbiased statistical representation of all tropical forest in terms of biomass and height factors. Our results show that tree H is an important allometric factor that needs to be included in future forest biomass estimates to reduce error in estimates of tropical carbon stocks and emissions due to deforestation.

Discurso sobre la Constitución, que dió al Reyno de Valencia su invicto conquistador el señor D. Jaime Primero

Hay un ejemplar encuadernado con: Idea general de España : discurso histórico de su población y religión : sitio, figura, circunferencia y confines ... (NP946.73/448)

Biografia de Juan de Juanes : Su vida y obras, sus discipulos e influencias...

Ejemplar deteriorado y falto de cubierta

Tratado de la distribución de las aguas del río Turia, y del Tribunal de los Acequieros de la Huerta de Valencia

Incluye grab. en p. 1 y p.143: "Grabado por Tomas Rocafort en Valª 1831"

Regimen sanitatis

Incipit Regimen sanitatis salernitanû ... pro côseruatione sanitatis totius humani generis a magistro arnaldi de Villanoua Cathellano ... ; ueraciter expositû nouiter correctû ac emendatû p[er] ... doctores Montispessulani ...Anno MCCCCLXXX p[re]dicto loco actu mora trahentes; al fin: Hoc opus optatur quod Flos medicine vocatur

Antidotarium clarificatum

Biblioteca de la Abadía de Montserrat

Opera Arnaldi de Villa nova medici acutissimi nuper recognita & emedata : additis etià quatuor tratactibu[us] qui in autehac impressis deerant & additionibus marginalibus : ac tabula ta capitoru quam materierum singulorissima...

Pie de imp. tomado del colofón : "Venetijs impressus fuit. Anno Dnice salutis. 1527. Dievero 12 mesis februarij"

Memoria geognostico-agrícola sobre la provincia de Castellón

Premiada por la Real Academia de Ciencias en concurso público con arreglo al programa presentado por la misma para el año 1858

Practica medicine Arnaldi de Villanoua

Pié de imp. tomado de colofón

Sentencia

Sign.: []2

Sentencia

Sign.: A4