1,362 research outputs found
Poverty-happiness nexus: Does the use of regional poverty lines matter?
This analysis aims to provide a comprehensive representation of the role of regional disparities in the nexus between poverty and subjective well-being, by adding the territorial dimension to the definition of poverty conditions. We investigate the nexus using regional poverty lines, including different poverty measures and considering different life domains. The analysis focuses on Italy because of its strong regional socio-economic disparities. Results show that the relevance of being poor on the well-being of citizens is in general higher and significant; the intensity and severity of poverty also change for different life domains. Findings are fundamental in designing local policies against poverty
Brillouin scattering for refractive index sensing in non-adiabatic tapers
We demonstrate the use of non-adiabatic tapers for refractive index sensing in optical fibers based on Brillouin scattering. By exciting higher order optical modes along the taper, the Brillouin gain spectrum becomes multipeaked, where each peak exhibits a different sensitivity to the refractive index of the surrounding medium. By this method, we demonstrate a sensitivity enhancement of the Brillouin frequency shift to refractive index changes by a factor of ≈ 4, compared to an adiabatic taper with the same waist diameter. Furthermore, the use of the spectral difference between two Brillouin gain peaks provides a temperature-independent measurement of the external refractive index
Applying artificial intelligence to assess the impact of orthognathic treatment on facial attractiveness and estimated age
This observational study aimed to use artificial intelligence to describe the impact of orthognathic treatment on facial attractiveness and age appearance. Pre- and post-treatment photographs (n=2164) of 146 consecutive orthognathic patients were collected for this longitudinal retrospective single-centre study. Every image was annotated with patient-related data (age; sex; malocclusion; performed surgery). For every image, facial attractiveness (score: 0-100) and apparent age were established with dedicated convolutional neural networks trained on >0.5million images for age estimation and with >17million ratings for attractiveness. Results for pre- and post-treatment photographs were averaged for every patient separately, and apparent age compared to real age (appearance). Changes in appearance and facial attractiveness were statistically examined. Analyses were performed on the entire sample and subgroups (sex; malocclusion; performed surgery). According to the algorithms, most patients' appearance improved with treatment (66.4%), resulting in younger appearance of nearly 1year [mean change: -0.93years (95% confidence interval (CI): -1.50; -0.36); p=0.002), especially after profile-altering surgery. Orthognathic treatment had similarly a beneficial effect on attractiveness in 74.7% [mean difference: 1.22 (95% CI: 0.81; 1.63); p<0.001], especially after lower jaw surgery. This investigation illustrates that artificial intelligence might be considered to score facial attractiveness and apparent age in orthognathic patients
Unexpected different chemoselectivity in the aerobic oxidation of methylated planar catechin and bent epicatechin derivatives catalysed by the Trametes villosa laccase/1-hydroxybenzotriazole system
Unreported methylated catechin and epicatechin derivatives 5 and 6 were synthesized by an oxa-Pictet-
Spengler reaction. Catechin 5 shows the B and C rings coplanar because of the formation of a trans
junction between the C ring and the newly generated six-term cycle D, in turn condensed to ring B. In
contrast, epicatechin 6 presents a bent geometry due to the establishment of a cis junction between the
C ring and the newly formed cycle D. The oxidation of compounds 5 and 6 in the presence of the
Trametes villosa laccase/1-hydroxybenzotriazole (HBT) system was investigated under aerobic conditions
in both a biphasic system and a reverse micelle. The unexpected different chemoselective oxidation at
the benzylic position of catechin and epicatechin derivatives 5 and 6 has been rationalized using a
molecular modelling approach. These results demonstrate that the Trametes villosa laccase/HBT system
represents a useful tool to functionalize the C-2 or C-4 position of phenolic compounds depending on
the structural features
Novel Optical Chemical Sensor Based on Molecularly Imprinted Polymer Inside a Trench Micro-machined in Double Plastic Optical Fiber☆
Abstract For the detection of chemical agents in different environments, the combination of plastic optical fibers (POFs) and molecularly imprinted polymer (MIP) layers has been tested as a way to obtain a low cost, highly selective and sensitive surface plasmon resonance (SPR) chemical sensor. A novel type of optical chemical sensor based on POF-MIP has been designed and fabricated, and in this work it has been applied for the selective detection of dibenzyl disulfide (DBDS) in transformer oil. This analyte is important in the control of transformer oil, since it is responsible for the corrosive properties of the oil. The new optical sensor platform is based on two plastic optical fibers coupled through a polymer molecularly imprinted for DBDS. The new sensor has been found to be useful for the determination of DBDS in transformer oil
(-)-Epigallocatechin-3-gallate and hydroxytyrosol improved antioxidative and anti-inflammatory responses in bovine mammary epithelial cells
(-)-Epigallocatechin-3-gallate and hydroxytyrosol improved antioxidative and anti-inflammatory responses in bovine mammary epithelial cells
L. Basiricò1, P. Morera1, D. Dipasquale1, R. Bernini1, L. Santi1, A. Romani2, N. Lacetera1 and U. Bernabucci1†
1Dipartimento di Scienze Agrarie e Forestali (DAFNE), Università degli Studi della Tuscia, via San Camillo de Lellis, 01100, Viterbo, Italy; 2Dipartimento di Statistica, Informatica, Applicazioni (DiSiA) “Giuseppe Parenti”, Università degli Studi di Firenze, via Morgagni 59, 50134, Firenze, Italy
(-)-Epigallocatechin-3-gallate (EGCG), the major phenolic compound of green tea, and hydroxytyrosol (HTyr), a phenol found in
olive oil, have received attention due to their wide-ranging health benefits. To date, there are no studies that report their effect
in bovine mammary gland. Therefore, the aim of this study was to evaluate the anti-oxidative and anti-inflammatory effects of
EGCG and HTyr in bovine mammary epithelial cell line (BME-UV1) and to compare their antioxidant and anti-inflammatory in
vitro efficacy. Sample of EGCG was obtained from a commercially available green tea extract while pure HTyr was synthetized in
our laboratories. The mammary oxidative stress and inflammatory responses were assessed by measuring the oxidative stress
biomarkers and the gene expression of inflammatory cytokines. To evaluate the cellular antioxidant response, glutathione (GSH/
GSSH), γ-glutamylcysteine ligase activity, reactive oxygen species and malondialdehyde (MDA) production were measured after
48-h incubation of 50 μM EGCG or 50 μM of HTyr. Reactive oxygen species production after 3 h of hydrogen peroxide (50 μM
H2O2) or lipopolysaccharide (20 μM LPS) exposure was quantified to evaluate and to compare the potential protection of EGCG
and HTyr against H2O2-induced oxidative stress and LPS-induced inflammation. The anti-inflammatory activity of EGCG and HTyr
was investigated by the evaluation of pro and anti-inflammatory interleukins (tumor necrosis factor (TNF)-α, interleukin (IL)-1β,
IL-6 and IL-10) messenger RNA abundance after treatment of cells for 3 h with 20 μM of LPS. Data were analyzed by one-way
ANOVA. (-)-Epigallocatechin-3-gallate or HTyr treatments induced higher concentrations of intracellular GSH compared to control
cells, matched by an increase of γ-glutamylcysteine ligase activity mainly in cells treated with HTyr. Interestingly, EGCG and HTyr
prevented oxidative lipid damage in the BME-UV1 cells by a reduction of intracellular MDA levels. (-)-Epigallocatechin-3-gallate
and HTyr were able to enhance cell resistance against H2O2-induced oxidative stress. It was found that EGCG and HTyr elicited a
reduction of the three inflammatory cytokines TNF-α, IL-1β, IL-6 and an increase of the anti-inflammatory cytokine IL-10.
Hydroxytyrosol has proved to be a strong antioxidant compound, and EGCG has shown mainly an anti-inflammatory profile.
These results indicated that EGCG and HTyr may provide dual protection because they were able to attenuate oxidative stress
and inflammatory responses, suggesting that these phenolic compounds are potential natural alternatives to be used in dairy
cattle as feed supplement for reducing the development of oxidative and inflammatory processes related to parturition or as
topical treatments for the control of bovine intramammary inflammation.
Animal (2019), 13:12, pp 2847–2856Ministry for education, University and Research of Italy (MIUR) for financial support (Law 232/216, Departments of Excellence)
- …