818 research outputs found
The Role of Extraversion, IQ and Contact in the Own-Ethnicity Face Recognition Bias.
While IQ is weakly related to the overall face recognition (Shakeshaft & Plomin, 2015), it plays a larger role in the processing of misaligned faces in the composite face task (Zhu et al., 2010). This type of stimuli are relatively novel and may reflect the involvement of intelligence in the processing of infrequently encountered faces, such as those of other-ethnicities. Extraversion is associated with increased eye contact which signifies less viewing of diagnostic features for Black faces. Using an old/new recognition paradigm, we found that IQ negatively correlated with the magnitude of the own-ethnicity bias (OEB) and that this relationship was moderated by contact with people from another ethnicity. We interpret these results in terms of IQ enhancing the ability to process novel stimuli by utilising multiple forms of coding. Extraversion was positively correlated with the OEB in White participants and negatively correlated with the OEB in Black participants suggesting that extraverts have lower attention to diagnostic facial features of Black faces, leading to poorer recognition of Black faces in both White and Black participants, thereby contributing to the relative OEB in these participants. The OEB is dependent on participant variables such as intelligence and extraversion
Protein haze formation in wines revisited. The stabilising effect of organic acids
The effect on the wine protein haze potential of five organic acids commonly encountered in wines (L(+)-
tartaric, L( )-malic, citric, succinic and gluconic acids) was assessed. All five acids, tested at 20 mM,
reduced dramatically the haze potential of proteins, either in wine or dissolved in water, throughout
the range of pH values typical of wines (i.e., from 2.8 through 3.8). Subtle differences among the acid
effects did not correlate with the number of their carboxyl groups, but were attributed to electrostatic
interactions that depend upon the acid pKa values, the protein pI values and the medium pH. These
results invalidate or question the validity of all experiments on wine proteins involving wine model solutions
containing organic acids. Overall, the results obtained in the present work clearly indicate that
organic acids with a common occurrence in wines exhibit a stabilising effect upon the haze potential
of the wine proteins
Renal Evaluation in Women with Preeclampsia
Background/Aims: Preeclampsia (PE) is a cause of glomerulopathy worldwide. Urinary retinol-binding protein (RBP) is a marker of proximal tubular dysfunction, albuminuria is an endothelial injury marker, urine protein:creatinine ratio (PCR) may have a predictive value for renal disease later in life, and, recently, podocyturia has been proposed as a sensitive tool in pregnancy, but it needs to be tested. The aim of this study was to evaluate renal involvement in PE and healthy pregnancy. Methods: Case-control study with 39 pregnant women assessed after 20 weeks of gestation (25 in the control group, CG, and 14 in the PE group) by performing urinary tests. Results: Mean (±SD) age and gestational age of the CG were 26.9 ± 6.4 years and 37.1 ± 5.0 weeks, and of the PE group 26.4 ± 6.9 years and 30.6 ± 5.6 weeks, respectively (p = 0.001). Mean (±SD) urinary RBP (p = 0.017), albuminuria (p = 0.002), and urinary albumin concentration (UAC) ratio (p = 0.006) of the CG were 0.4 ± 0.7 mg/l, 7.3 ± 6.9 mg/l, and 8.2 ± 6.7 mg/g and of the PE group 2.0 ± 4.4 mg/l, 2,267.4 ± 2,130.8 mg/l (p = 0.002), and 3,778.9 ± 4,296.6 mg/g (p = 0.006), respectively. Mean (±SD) urine PCR in the PE group was 6.7 ± 6.1 g/g (p Conclusions: Urinary RBP, PCR, albuminuria, and UAC ratio were elevated in the PE group in comparison to the CG. Podocyturia did not predict PE
Bacterial community dynamics in horizontal flow constructed wetlands with different plants for high salinity industrial wastewater polishing
This study is focused on the diversity of bacterial communities from two series of horizontal subsurface flow constructed wetlands (CW) polishing high salinity tannery wastewater. Each series was planted with Arundo donax or Sarcocornia sp. in a substrate composed by expanded clay and sand. Chemical and biochemical oxygen demand removal efficiencies were similar in each series, varying between 58 and 67% (inlet COD 218 ± 28 mg L−1) and 60 and 77% (inlet BOD5 37 ± 6 mg L−1), respectively. High numbers of culturable bacteria were obtained from substrate and root samples – 5.75 × 106-3.95 × 108 CFU g−1 recovered on marine agar and 1.72 × 107-8.46 × 108 CFU g−1 on nutrient agar. Fifty bacterial isolates were retrieved from the CW, related phylogenetically to Firmicutes, Actinobacteria, Bacteroidetes, α-, β-, and γ-Proteobacteria. Changes in the bacterial communities, from roots and substrate of each series, related to the plant species, hydraulic loading rates and along CW operation were examined using denaturating gradient gel electrophoresis (DGGE). The clustering analysis suggested that a diverse and distinct bacterial community inhabits each series, which was related to the type of plant present in each CW.info:eu-repo/semantics/publishedVersio
Cercosporin quantification in Cercospora coffeicola isolates by spectrophotometry and high performance liquid chromatography: a comparative analysis
info:eu-repo/semantics/publishedVersio
Feature Extraction and Classification of Biosignals - Emotion Valence Detection from EEG Signals
In thisworkavalencerecognitionsystembasedonelectroencephalogramsispresented.Theperformanceof
the systemisevaluatedfortwosettings:singlesubjects(intra-subject)andbetweensubjects(inter-subject).
The featureextractionisbasedonmeasuresofrelativeenergiescomputedinshorttimeintervalsandcertain
frequencybands.Thefeatureextractionisperformedeitheronsignalsaveragedoveranensembleoftrialsor
on single-trialresponsesignals.Thesubsequentclassificationstageisbasedonanensembleclassifier,i.e.a
random forestoftreeclassifiers.Theclassificationisperformedconsideringtheensembleaverageresponsesof
all subjects(inter-subject)orconsideringthesingle-trialresponsesofsinglesubjects(intra-subject).Applying
a properimportancemeasureoftheclassifier,featureeliminationhasbeenusedtoidentifythemostrelevant
features of the decision making.info:eu-repo/semantics/publishedVersio
Ionic liquids as entrainers for terpenes fractionation and other relevant separation problems
This work discusses the potential of two phosphonium-based ionic liquids (ILs), [P6,6,6,14]Cl and [P6,6,6,14][(C8H17)2PO2], and one methylimidazolium-based IL, [C4mim][OAc], as entrainers in the fractionation of terpene mixtures, in the desulfurization and denitrification of fuel oils, and in the separation of aromatics from aliphatic hydrocarbons. To this aim, the activity coefficients at infinite dilution of 45 solutes were obtained by gas-chromatography in the temperature range (333.15–458.15) K. Selectivities and capacities were calculated showing that [P6,6,6,14]Cl is adequate for the fractionation of (−)-menthone/L-(−)-menthol mixture, being also a suitable option for the deterpenation of citrus essential oil, and the removal of thiophene and pyridine from aliphatic hydrocarbons. To complement the experimental measurements COSMO-RS model was tested, demonstrating good potential to screen separation agents and give insights for several important separation problems, including the removal of contaminants from fuels and the isolation, fractionation and purification of terpenes mixtures.This work was developed within the scope of the project CICECOAveiro
Institute of Materials, UIDB/50011/2020 & UIDP/50011/2020,
and CIMO-Mountain Research Center, UIDB/00690/2020, both financed
by national funds through the Portuguese Foundation for Science and
Technology/MCTES. Sérgio M. Vilas-Boas also thanks FCT for the Ph.D.
grant (SFRH/BD/138149/2018).info:eu-repo/semantics/publishedVersio
Cercosporin production by Cercospora coffeicola isolates: spectrophotometry and HPLC quantification and image analysis
Cercosporin has excellent properties of photosensitization that have been widely used in organophotocatalyst and photodynamic
therapy as well as an antimicrobial agent. Therefore, there is a need to quantify it accurately with accessible methods.
A comparative analysis of cercosporin quantification obtained by spectrophotometry (SPEC) and high-performance liquid
chromatography (HPLC) was performed for nineteen Cercospora coffeicola isolates from different coffee-producing municipalities
in Brazil. Image analysis of cercosporin crystals was performed in isolates with either high or low production of
the toxin. Our results show that SPEC and HPLC are equally valid for the cercosporin evaluation of C. coffeicola cultures
grown in vitro. The isolates with high cercosporin production had a higher crystal number and size when compared to the
one with low cercosporin productioninfo:eu-repo/semantics/publishedVersio
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