Search results for "140"
showing 10 items of 140 documents
Nitrous oxide emission in a University of Cape Town membrane bioreactor: The effect of carbon to nitrogen ratio
2017
Abstract The effect of the carbon-to-nitrogen (C/N) ratio in the influent on the nitrous oxide (N 2 O) emission from a University of Cape Town Membrane BioReactor pilot plant was investigated. The membrane was located in a separate tank to single out the production of N 2 O due to the biological processes from N 2 O stripping as a result of the extra aeration needed for the mitigation of membrane fouling. The experimental campaign was divided into two phases, each characterized by a different C/N ratio (namely, 10 and 5 mgCOD/mgTN, Phase I and Phase II, respectively). The decrease of the C/N ratio promoted the increase of N 2 O emissions in both gaseous and dissolved phases, mainly due to a…
The effect of the solids and hydraulic retention time on moving bed membrane bioreactor performance
2018
Abstract The aim of the present paper was to investigate the effect of solids (SRT) and hydraulic (HRT) retention time on Integrated Fixed Film Activated Sludge (IFAS) University of Cape Town (UCT) membrane Bioreactor (MBR). In particular, three different pairs of SRT and HRT values were analysed, namely, Phase I 56 d/30 h, Phase II 31 d/15 h and Phase III 7 d/13 h. The short-term effect of these three SRT/HRT conditions was assessed by analysing several system performance indicators: organic carbon and biological nutrient (nitrogen and phosphorus) removal, biomass respiratory activity, activated sludge filtration properties and membrane fouling. The results showed that the decrease of SRT/…
Ympäristöhallintajärjestelmät suomalaisten yritysten silmin
1997
Unbundling technology adoption and tfp at the firm level. Do intangibles matter?
2012
We use a panel of European firms to investigate the relationship between intangible assets and productivity. We distinguish between total factor productivity (tfp) and technology adoption, whereas standard estimations consider only a notion of productivity that conflates the two effects. Although we are unable to address simultaneity, we allow for the existence of multiple technologies within sectors through a mixture model approach. We find that intangible assets have nonnegligible effects that both push firms toward better technologies (technology adoption effects) and allow for more efficient exploitation of a given technology (tfp effects).
Historia de la vida y hechos del Rey Don Henrique Tercero de Castilla ... / el maestro Gil Gonzalez Davila ...
1638
Grav. calc. "I. de Courbes F.", representando al Rey Enrique III Sign.: œ4, [ ]1, A-O8, P4 Text a 2 col. Port. amb orla tip.
Subsecond pore‐scale displacement processes and relaxation dynamics in multiphase flow
2014
With recent advances at X‐ray microcomputed tomography (μCT) synchrotron beam lines, it is now possible to study pore‐scale flow in porous rock under dynamic flow conditions. The collection of four‐dimensional data allows for the direct 3‐D visualization of fluid‐fluid displacement in porous rock as a function of time. However, even state‐of‐the‐art fast‐μCT scans require between one and a few seconds to complete and the much faster fluid movement occurring during that time interval is manifested as imaging artifacts in the reconstructed 3‐D volume. We present an approach to analyze the 2‐D radiograph data collected during fast‐μCT to study the pore‐scale displacement dynamics on the time s…
La sociedad y el espacio público
2019
El espacio público y los actos de la propia sociedad, ¿hasta dónde llega el límite de unos para que comience el derecho de los otros? Son muchas las actuaciones que se suceden en la vía pública y que tienen una repercusión, en la mayoría de los casos, negativa para el paisaje urbano. En esta fina línea, entre la preservación del paisaje urbano y los derechos que la ley confiere a los ciudadanos, se enmarcan las ordenanzas de convivencia ciudadana como el mecanismo adecuado que normativice las conductas que inciden en el espacio público. Se juzga imprescindible analizar las normas de convivencia que presiden nuestro país, a fin de dar con soluciones ecuánimes que garanticen la viabilidad de …
Global Initiative for Asthma (GINA) Strategy 2021 - Executive summary and rationale for key changes
2021
Funder: Global Initiative for Asthma
sj-jpg-1-tau-10.1177_1756287221995683 – Supplemental material for Fibronectin urothelial gene expression as a new reliable biomarker for early detect…
2021
Supplemental material, sj-jpg-1-tau-10.1177_1756287221995683 for Fibronectin urothelial gene expression as a new reliable biomarker for early detection of local toxicity secondary to adjuvant intravesical therapy for non-muscle invasive bladder cancer by Fabrizio Di Maida, Cristina Scalici Gesolfo, Riccardo Tellini, Andrea Mari, Chiara Sanfilippo, Luca Lambertini, Antonio Andrea Grosso, Marco Carini, Andrea Minervini and Vincenzo Serretta in Therapeutic Advances in Urology
sj-pdf-1-smo-10.1177_20503121211019889 – Supplemental material for The efficacy of single suture for exit site wound closure and stabilization of hem…
2021
Supplemental material, sj-pdf-1-smo-10.1177_20503121211019889 for The efficacy of single suture for exit site wound closure and stabilization of hemodialysis central tunneled catheter by Tomasz Porazko, Andrzej Piersiak and Marian Klinger in SAGE Open Medicine