Search results for "MBI"
showing 10 items of 15110 documents
THE USE OF MBR SYSTEMS FOR THE TREATMENT OF REAL SHIPBOARD SLOPS: ANALYSIS OF BIOLOGICAL PERFORMANCE AND BIOMASS BIOKINETIC ACTIVITY
2016
In order to prevent hydrocarbon discharge at sea from ships, the International Maritime Organization (IMO) enacted the MARPOL 73/78 convention in which any oil and oil residue discharged in wastewater streams must contain less than 5 ppm hydrocarbons. Effective treatment of this petroleum-contaminated water is essential prior to its release into the environment, in order to prevent pollution problem for marine ecosystems as well as for human health. The present paper reports the first results of a field gathering campaign aimed at gaining insight about the treatment of real shipboard slops with a MBR pilot plant, in terms of pilot performance and biomass biokinetic activity. The achieved re…
EL ANUNCIO DE PERMUTA: NACIMIENTO Y DESARROLLO DE UNA TRADICIÓN DISCURSIVA
2015
En este artículo se presenta el anuncio de permutas en Cuba, en su surgimiento como una tradición discursiva que evoluciona desde la inmediatez hacia la distancia. Dado un marco escénico de dos personas con necesidades complementarias de cambio de casa, se analiza la estructura de este discurso, y los recursos con que se logra la seducción o la persuasión. También se estudia la imagen tanto del enunciador como del enunciatario, que se colige del texto. Se evidencia que en este producto comunicativo para el consumo cultural, el mensaje esencial no se refiere a las características del producto transaccional, sino a la voluntad suasoria, y al acto directivo incluido. En la voluntad de crear ex…
Embedding “roadside equipment” into environmental assessment of transportation system: the case of safety barriers
2015
The work arises from the consideration that the environmental impact of a road cannot be limited to the analysis of its constituent materials, even if correctly analyzed in their life cycle. In fact, a given road not only consists of the pavement and subgrade, but also includes several different components and accessories (e.g. road marking, drainages, safety barriers, etc.) that contribute to set a road infrastructure in operative conditions. As a matter of fact, only limited attention has been paid in the scientific literature to roadside components, unlike pavement and traffic flow. In the present work, the environmental burden of one of these components, i.e. the safety barrier, has bee…
Store ører: Forholdet mellem æsel og menneske i selvudforskning og træningskurser
2022
Gli asini, per le loro caratteristiche etologiche e per la loro valenza simbolica all’interno della nostra cultura, offrono la possibilità di sperimentare percorsi di conoscenza profonda di sé, di scoperta delle proprie emozioni ma anche di fiducia in se stessi e nella relazione con l’altro. In questo articolo parlerò di come e per quali ragioni siano proponibili esperienze significative di apprendimento in tutte le età della vita, a partire dalla prima infanzia. Mi soffermerò infine sull’efficacia di percorsi con gli asini nell’ambito della formazione dei formatori Donkeys, due to their ethological characteristics and their symbolic value within our culture, offer the opportunity to experi…
Transcatheter arterial chemoembolization for hepatocellular carcinoma in cirrhosis;survival rate and prognostic factors
2010
Background: The role of prognostic variables in the treatment of hepatocellular carcinoma (HCC) by transarterial chemoembolisation (TACE) is controversial. Aims: To evaluate the survival of patients with HCC on cirrhosis treated with TACE and to analyse the prognostic factors affecting survival. Methods: From 1996 to 2006, 580 consecutive patients with HCC in cirrhosis were observed. Of these 194 patients underwent TACE. The primary end-point was survival. Independent predictors of survival were identified using the Cox model. Results: The cumulative 1-year, 3-year, and 5-year survival rates were 96%, 60%, and 41%, respectively. The multivariate analysis showed significant reduction of surv…
Educación XX1 : revista de la Facultad de Educación
2016
Resumen basado en el de la publicación Título, resumen y palabras clave también en inglés Se indaga sobre las evidencias en torno a cómo se reciben en los centros escolares los equipamientos tecnológicos (el KidSmart en este caso). Se asume, a modo de hipótesis, que el grado de asimilación por parte de los miembros de la organización de la tecnología transferida, es un factor determinante del grado de uso. El trabajo de campo se realiza en los centros de educación infantil que participan en el proyecto «El Rincón del Ratón». Mediante grabaciones de clase, encuestas y observaciones se ha tratado de obtener evidencias sobre el problema de investigación. Los primeros resultados ponen de manifi…
Evolutionary advantage conferred by an eukaryote-to-eukaryote gene transfer event in wine yeasts
2015
Although an increasing number of horizontal gene transfers have been reported in eukaryotes, experimental evidence for their adaptive value is lacking. Here, we report the recent transfer of a 158-kb genomic region between Torulaspora microellipsoides and Saccharomyces cerevisiae wine yeasts or closely related strains. This genomic region has undergone several rearrangements in S. cerevisiae strains, including gene loss and gene conversion between two tandemly duplicated FOT genes encoding oligopeptide transporters. We show that FOT genes confer a strong competitive advantage during grape must fermentation by increasing the number and diversity of oligopeptides that yeast can utilize as a s…
A model for wastewater organic removal and fouling development in a SMBR pilot plant
2007
The paper presents the setting up of a mathematical model for membrane bioreactor able to simulate physical-biological wastewater organic removal. The model is basically divided into two sub-models: the first sub-model is basically devoted for the simulation of the biological features and the second one for the physical processes. In particular regarding the biological aspects, the ASM concept has been employed. On the other hand, the physical processes have been modelled considering the deep-bed theory taking into account not only the effect of the physical membrane filtration but also the cake layer effect. This latter operates as a biological membrane leading to a further reduction of th…
Impacto del quimerismo hematopoyético precoz en el injerto tras trasplante alogénico de progenitores de sangre de cordón umbilical de donante no empa…
2013
El trasplante de sangre de cordón umbilical (TSCU) ha experimentado un auge muy importante en los últimos años como alternativa a la médula ósea y sangre periférica, debido a la dificultad de encontrar donantes altruistas de estas fuentes de progenitores hematopoyéticos. Los datos clínicos disponibles hasta la fecha muestran una supervivencia libre de enfermedad similar a la observada con el trasplante de médula ósea (TMO) o sangre periférica (TSP). Sin embargo, como consecuencia de la baja dosis celular contenida en la SCU, la tasa de fallo de injertos es más elevada y el tiempo hasta la recuperación de la neutropenia más prolongado. Gran parte de la investigación en el terreno del TSCU se…
A Band Model of Cambium Development: Opportunities and Prospects
2021
More than 60% of tree phytomass is concentrated in stem wood, which is the result of periodic activity of the cambium. Nevertheless, there are few attempts to quantitatively describe cambium dynamics. In this study, we develop a state-of-the-art band model of cambium development, based on the kinetic heterogeneity of the cambial zone and the connectivity of the cell structure. The model describes seasonal cambium development based on an exponential function under climate forcing which can be effectively used to estimate the seasonal cell production for individual trees. It was shown that the model is able to simulate different cell production for fast-, middle- and slow-growing trees under …