141.
Utilización de altas dosis de fangos de depuradoras de aguas residuales urbanas en la restauración de canteras calcáreas; acumulación de metales trazas en el suelo y calidad de la cubierta vegetal - Irimia, E.; Sánchez, M.; Garcia, R.; Balanya Martí, Teresa; Pujolà Cunill, Montserrat
Se han utilizado altas dosis de fangos de depuradora de aguas residuales (200 y 400 Mg de fangoseco ha-') en la restauración de una cantera de piedra caliza, y dos sistemas de aplicación de los fangos(mezcla previa y aplicación directa). Los tratamientos con fangos han provocado un aumento del contenidototal y asimilable de los metales traza en el suelo. A nivel foliar solo el sistema de aplicación directa y dosisalta presenta contenidos superiores al control (Zn, Cu, Pb), y a lo largo de la experiencia los niveles vandisminuyendo. El principal efecto negativo del uso de fangos es el elevado contenido...
142.
Anaerobic digestion of animal by-products and slaughterhouse waste: main process limitations and microbial community interactions - Palatsi Civit, Jordi; Viñas, Marc; Guivernau, Miriam; Fernández García, Belén; Flotats Ripoll, Xavier
Fresh pig/cattle slaughterhouse waste mixtures, with different lipid-protein ratios, were characterized and their anaerobic biodegradability assessed in batch tests. The resultant methane potentials were high (270–300 LCH4 kg 1 COD) making them interesting substrates for the anaerobic digestion process. However, when increasing substrate concentrations in consecutive batch tests, up to 15 gCOD kg 1, a clear inhibitory process was monitored. Despite the reported severe inhibition, related to lipid content, the system was able to recover activity and successfully degrade the substrate. Furthermore, 16S rRNA gene-based DGGE results showed an enrichment of specialized microbial populations, such as b-oxidizing/proteolitic bacteria (Syntrophomonas sp.,...
143.
INDISIM-SOM, an individual-based simulator on a website for experimenting and investigating diverse dynamics of Carbon and Nitrogen in mineral soils - Gras, Anna; Cañadas Lorenzo, Juan Carlos; Ginovart Gisbert, Marta
INDISIM-SOM models the dynamics and evolution of C and N related to organic matter in soils by using individual-based simulations. It is an Individual-based Model that controls a group of microbial cells at each time step, using a set of time-dependent variables for each microorganism. The space is divided into square cells. In each spatial cell, the amounts of different types of organic compounds are controlled. These are identified as polymerized organic C and N, labile organic C and N, and mineral compounds such us NNH4, NNO3, CO2 and O2. The model takes into account the activity of two types...
144.
A mediterranean nocturnal heavy rainfall and tornadic event. Part I: overview, damage survey and radar analysis - Van der Velde, Oscar Arnoud; Bech, Joan; Pineda Ruegg, Nicolau; Rigo, Tomeu; Aran, Montserrat; Amaró, Jésica; Gayà, M; Arús, J; Montañá, J. (Joan)
This study presents an analysis of a severe weather case that took placeduring the early morning of the 2nd of November 2008, when intenseconvective activity associated with a rapidly evolving low pressure systemaffected the southern coast of Catalonia (NE Spain). The synopticframework was dominated by an upper level trough and an associated coldfront extending from Gibraltar along the Mediterranean coast of the IberianPeninsula to SE France, which moved north-eastward. South easterly windsin the north of the Balearic Islands and the coast of Catalonia favoured highvalues of 0-3 km storm relative helicity which combined with moderateMLCAPE values and high shear favoured...
145.
A mediterranean nocturnal heavy rainfall and tornadic event. Part II: total lightning analysis - Pineda Ruegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá, J. (Joan)
On the night from 1st to 2nd of November 2008, a multi-cell storm coming from theMediterranean produced severe weather in the coastal area of Catalonia (NE Spain): groundlevelstrong damaging wind gusts, a tornado – which caused F2 damage – and heavy rainfall. Ageneral overview of the synoptic framework, damage observed and a radar analysis is given inthe first part of the study. This second part is mostly centered on the detailed analysis of thetotal lightning behavior, its relationship with radar-derived storm parameters, and totallightning correlation with hazardous weather. The purpose is to bring more evidence about theoutstanding role of total...
146.
Individual-based modelling: an essential tool for microbiology - Ferrer Savall, Jordi; Prats Soler, Clara; López i Codina, Daniel
Micro-organisms play a central role in every ecosystem and in the global biomass cycle. They are strongly involved in many fields of human interest, from medicine to the food industry and waste control. Nevertheless, most micro-organisms remain almost unknown, and nearly 99% of them have not yet been successfully cultured in vitro. Therefore, new approaches and new tools must be eveloped in order to understand the collective behaviour of microbial communities in any natural or artificial setting. In particular, theoretical and practical methodologies to deal with such systems at a mesoscopic level of description (covering the range from 100 to...
147.
Individual-based model and simulation of Plasmodium falciparum infected erythrocyte in vitro cultures - Ferrer Savall, Jordi; Vidal, J; Prats Soler, Clara; Valls Ribas, Joaquim; Herreros, E; López i Codina, Daniel; Giró i Roca, Antoni; Gargallo, D
Malaria is still one of the most fatal diseases in the world. Development of an effective treatment or vaccine requires the cultivation of the parasite that causes it: Plasmodium falciparum. Several methods for in vitro cultivation of P. falciparum infected erythrocytes have been successfully developed and described in the last 30 years. Some problems arising from the current harvests are the low parasitaemiaand daily human supervision requirements. The lack of a suitable model for global culture behavior makes the assay of newmethodologies a costly and tenuous task. In this paper we present a model and simulation tool for these systems....
148.
Individual-based modelling of bacterial cultures to study the microscopic causes of the lag phase - Prats Soler, Clara; López i Codina, Daniel; Giró i Roca, Antoni; Ferrer Savall, Jordi; Valls Ribas, Joaquim
The lag phase has been widely studied for years in an effort to contribute to the improvement of food safety. Many analytical models have been built and tested by several authors. The use of Individual-based Modelling (IbM) allows us to probe deeper into the behaviour of individual cells; it is a bridge between theories and experiments when needed. INDividual DIScrete SIMulation (INDISIM) has been developed and coded by our group as an IbM simulator and used to study bacterial growth, including the microscopic causes of the lag phase. First of all, the evolution of cellular masses, specifically the mean mass...
151.
Ecosystemes steppiques(Cas de Brezina– El Bayadh) - Verdú González, Antoni Maria Claret; Mederbal, K.; Josa March, Ramon; Boukhari, Y.; Mas Serra, Maite; Khader, M.; Ouldali, O.; Regagba, Z.; Tadjeddine, N.
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