Search results for "performance"
showing 10 items of 4457 documents
Improving membrane photobioreactor performance by reducing light path: operating conditions and key performance indicators
2020
[EN] Microalgae cultivation has been receiving increasing interest in wastewater remediation due to their ability to assimilate nutrients present in wastewater streams. In this respect, cultivating microalgae in membrane photobioreactors (MPBRs) allows decoupling the solid retention time (SRT) from the hydraulic retention time (HRT), which enables to increase the nutrient load to the photobioreactors (PBRs) while avoiding the wash out of the microalgae biomass. The reduction of the PBR light path from 25 to 10 cm increased the nitrogen and phosphorus recovery rates, microalgae biomass productivity and photosynthetic efficiency by 150, 103, 194 and 67%, respectively.The areal biomass product…
Stereotypes in Persuasive Communication: Influence Exerted by a Disapproved Source
2004
The present paper examines how someone's use of stereotypes can exert influence over others’ judgments. In the 2 studies reported here, participants were presented with messages containing information provided by a source. In Study 1, the source was an in-group member. The messages were manipulated in a between-subjects design so that participants were either given stereotypical or counterstereotypical information. After being given a hint regarding the source's estimate, participants were asked to provide their own estimates about a number of points displayed on a computer screen. Results indicate that participants tended to use as an anchor the estimate provided by the source that made us…
Technical and health governance aspects of the External Quality Assessment Scheme for the SARS-CoV-2 molecular tests: institutional experience perfor…
2022
Abstract Objectives Since December 2019, the worldwide public health has been threatened by a severe acute respiratory syndrome caused by Coronavirus-2. From the beginning, a turning point has been the identification of new cases of infection, in order to minimize the virus spreading among the population. For this reason, it was necessary introducing a panel of tests able to identify positive cases, which became crucial for all countries. Methods As a Regional Reference Centre, the CRQ Laboratory (Regional Laboratory for the Quality Control) developed and conducted an External Quality Assessment (EQA) panel of assay, so as to evaluate the quality of real-time reverse transcription polymeras…
Interactive effects of emotions on performance: an exploratory study in elite skeet shooters
2021
Este estudio investiga los efectos interactivos de múltiples emociones en el rendimiento (resultado) de tres tiradores de skeet de elite. La escala de emociones agregadas Emotional State Profile-40 (ESP-40; Hanin, 2010b) evalúa las experiencias emocionales recordadas asociadas con rendimientos exitosos y pobres y con rendimientos actuales. El rendimiento actual consiste en 20 series de 25 tiros. Los resultados confirman la utilidad práctica de la escala ESP-40 en la evaluación de los efectos interactivos de cuatro categorías de emoción en el rendimiento deportivo. Las emociones recordadas fueron instrumentales en la predicción de los resultados actuales. Se discute la utilidad de la regresi…
Regulating pre-performance psychobiosocial states with music
2016
The present study aimed to investigate the effects of music on swimmers’ pre-performance psychobiosocial states. We involved a purposeful sample of competitive swimmers (N = 17) in a 5-week intervention grounded in the individual zones of optimal functional (IZOF) model. Multiple findings were revealed. The first showed that pre-performance psychobiosocial states were predictive of subsequent performance. This was revealed by a high number of significant differences found between best and worst performance across modalities. Second, swimmers improved their ability to regulate pre-performance states through the use of music. This was shown through evidence that no significant differences wer…
Setting up of a machine learning algorithm for the identification of severe liver fibrosis profile in the general US population cohort
2022
Background: The progress of digital transformation in clinical practice opens the door to transforming the current clinical line for liver disease diagnosis from a late-stage diagnosis approach to an early-stage based one. Early diagnosis of liver fibrosis can prevent the progression of the disease and decrease liver-related morbidity and mortality. We developed here a machine learning (ML) algorithm containing standard parameters that can identify liver fibrosis in the general US population.Materials and methods: Starting from a public database (National Health and Nutrition Examination Survey, NHANES), representative of the American population with 7265 eligible subjects (control populati…
Automated Determination of Paroxetine and Its Main Metabolite by Column Switching and On-Line High-Performance Liquid Chromatography
1994
An automated column-switching method coupled to isocratic high-performance liquid chromatography has been developed for simultaneous determination of blood levels of paroxetine and its nonconjugated main metabolite BRL 36610. The lower limits of detection were 9-15 nmol/L (3-5 ng/ml) and linearity between drug concentration and detector response was found for 0-1,500 nmol/L (0-500 ng/ml). The method could be applied to the analysis of serum samples obtained from depressed patients who were treated with daily oral doses of 20 or 40 mg of paroxetine. After the 20-mg dose, the mean blood level of paroxetine was 69 nM (23 ng/ml), whereas the metabolite BRL 36610 was detectable in only one of 5 …
Valuing the effects of urban road-network projects: a methodological proposal
2006
This paper proposes a methodology for the valuation of the urban environment. It tries to answer questions and problems that derive from new road installations, or functional requalifications in existing road infrastructures, in accordance with specific practices already well-known as Urban Impact Assessment (UIA). More generally, the objective of the urban impact assessment consists of valuing the possibilities to localize urban installations, also considering both their economic and social effects, as well as identifying potential dangers to the environment, intended in a general sense. This kind of valuation distinguishes from the traditional environmental impact valuation (e.g., applied…
Ergonomics Awareness and Employee Performance: An Exploratory Study
2017
The study examined the effects of ergonomics on employee performance by ascertaining the level of ergonomics awareness in Nigerian organizations, identifying the factors hindering the use of ergonomic, and the best practices and methods adopted by various organizations across industries. Despite a knowledge of importance to a growing number of researchers in Nigeria, there is still a dearth in knowledge of ergonomics design and its implementation in Nigeria. This can be observed in the low level of its adoption. The study adopted an exploratory approach through the review of literature. It was seen that several factors have hindered the efficient implementation of ergonomics in Nigeria whic…
The impact of procedural and conceptual teaching on students' mathematical performance over time
2019
The goal of the present study is to investigate the impact of procedural and conceptual teaching on students' mathematical performance over time. For this purpose, implicit differentiation and inte...