Search results for "consumption"

Energy efficiency in Spanish wastewater treatment plants: a non-radial DEA approach.

2011

Wastewater treatment plants (WWTPs) are energy-intensive facilities. Thus, reducing their carbon footprint is particularly important, both economically and environmentally. Knowing the real operating energy efficiency of WWTPs is the starting point for any energy-saving initiative. In this article, we applied a non-radial Data Envelopment Analysis (DEA) methodology to calculate energy efficiency indices for sampling of WWTPs located in Spain. In a second stage analysis, we examined the operating variables contributing to differences in energy efficiency among plants. It is verified that energy efficiencies of the analyzed WWTPs were quite low, with only 10% of them being efficient. We found…

Algunas reflexiones sobre el alcoholismo femenino

2005

En el presente trabajo se pretende interesar al lector en el análisis del fenómeno del alcoholismo femenino. Se tratan diversos temas como el contexto en el que se socializan las mujeres, teniendo en cuenta los cambios acaecidos en la familia como institución y el rol de la mujer en la sociedad. Otra cuestión con referencia a ese contexto es la prevalencia del consumo de alcohol en el colectivo de mujeres en España y las nuevas tendencias de dicho consumo. Se revisan brevemente los diferentes enfoques teóricos que enmarcan la comprensión e interpretación del alcoholismo, incidiendo en los aspectos de la desviación social y el control social. Para finalizar, algunas consideraciones sobre la …

Ensuring High Performance of Consensus-Based Estimation by Lifetime Maximization in WSNs

2015

The estimation of a parameter corrupted by noise is a common tasks in wireless sensor networks, where the deployed nodes cooperate in order to improve their own inaccurate observations. This cooperation usually involves successive data exchanges and local information updates until a global consensus value is reached. The quality of the final estimator depends on the amount of collected observations, hence the number of active nodes. Moreover, the inherent iterative nature of the consensus process involves a certain energy consumption. Since the devices composing the network are usually battery powered, nodes becoming inactive due to battery depletion emerges as a serious problem. In this wo…

Oxygen profile of microencapsulated islets: effect of immobilised hemoglobin in the alginate matrix

2001

El uso y consumo de agua en los jardines de las viviendas del litoral de Alicante (España)

2016

El jardín es el elemento que ha adquirido una mayor difusión en los modelos urbanos extensivos en la costa de Alicante (España). En este territorio, a diferencia de otros ámbitos, los jardines unifamiliares se asocian a las urbanizaciones que se han ido configurando desde 1960 a raíz de la expansión del denominado turismo residencial. Los objetivos de esta investigación son identificar las principales características de los jardines unifamiliares y, a partir de ellas, estimar sus necesidades hídricas y determinar el volumen de agua doméstico consumido por el jardín en el hogar. Profundizar en estos factores resulta prioritario para determinar sus repercusiones en la demanda de agua presente…

Water Consumption and Management in Schools in the City of Alicante (Southern Spain) (2000–2017): Free Water Helps Promote Saving Water?

2020

Studies on water in cities usually focus on household consumption. However, little attention has been given to non-household consumption and schools from a geographic perspective. The objectives of this research are to examine water consumption trends in schools in the city of Alicante (Southern Spain) between 2000&ndash

Transport of C(4)-dicarboxylates in Wolinella succinogenes.

2000

ABSTRACT C 4 -dicarboxylate transport is a prerequisite for anaerobic respiration with fumarate in Wolinella succinogenes , since the substrate site of fumarate reductase is oriented towards the cytoplasmic side of the membrane. W. succinogenes was found to transport C 4 -dicarboxylates (fumarate, succinate, malate, and aspartate) across the cytoplasmic membrane by antiport and uniport mechanisms. The electrogenic uniport resulted in dicarboxylate accumulation driven by anaerobic respiration. The molar ratio of internal to external dicarboxylate concentration was up to 10 3 . The dicarboxylate antiport was either electrogenic or electroneutral. The electroneutral antiport required the prese…

Alternative respiratory pathways of Escherichia coli: energetics and transcriptional regulation in response to electron acceptors

1997

AbstractThe electron-transport chains of Escherichia coli are composed of many different dehydrogenases and terminal reductases (or oxidases) which are linked by quinones (ubiquinone, menaquinone and demethylmenaquinone). Quinol:cytochrome c oxido-reductase (`bc1 complex') is not present. For various electron acceptors (O2, nitrate) and donors (formate, H2, NADH, glycerol-3-P) isoenzymes are present. The enzymes show great variability in membrane topology and energy conservation. Energy is conserved by conformational proton pumps, or by arrangement of substrate sites on opposite sides of the membrane resulting in charge separation. Depending on the enzymes and isoenzymes used, the H+/e− rat…

Cigarette Consumption and X-Sperm Enrichment After Swim-Up

2005

Altered Mitochondrial Function and Oxidative Stress in Leukocytes of Anorexia Nervosa Patients

2014

ContextAnorexia nervosa is a common illness among adolescents and is characterised by oxidative stress.ObjectiveThe effects of anorexia on mitochondrial function and redox state in leukocytes from anorexic subjects were evaluated.Design and settingA multi-centre, cross-sectional case-control study was performed.PatientsOur study population consisted of 20 anorexic patients and 20 age-matched controls, all of which were Caucasian women.Main outcome measuresAnthropometric and metabolic parameters were evaluated in the study population. To assess whether anorexia nervosa affects mitochondrial function and redox state in leukocytes of anorexic patients, we measured mitochondrial oxygen consumpt…