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Evaluation of the noise exposure of symphonic orchestra musicians

For musicians, the impact of noise exposure is not yet fully characterized. Some inconsistencies can be found in the methodology used to evaluate noise exposure. This study aims to analyze the noise exposure of musicians in a symphonic orchestra to understand their risk for hearing loss, applying the methodology proposed by ISO 9612:2009. Noise levels were monitored among musicians during the rehearsal of eight...

Experimental and theoretical studies of the second- and third-order NLO propert...

A new semi-organic compound, 6-aminoquinolinium iodide monohydrate (I), has been synthesized and characterized by single crystal X-ray diffraction, UV–vis absorption and fluorescence spectroscopy and nonlinear optical (NLO) measurements. The second- and third-order NLO responses were investigated with the second- and third-harmonic Maker fringes techniques, carried out on thin films at a fundamental wavelength ...

Escola universal, escola reflexiva

O presente trabalho, elaborado no âmbito da disciplina de Projecto de Investigação da Pós-Graduação em Supervisão Pedagógica e Formação de Formadores da Escola Superior de Educação de Paula Frassinetti, pretendia ser o início do Projecto Educativo da nossa Instituição. Em primeiro lugar começámos por reflectir sobre a nossa escola e deparámo-nos com alguns problemas, descobrindo lacunas que se não fossem sinali...

Esclerose sistémica juvenil: uma doença incomum na infância

A esclerose sistêmica juvenil (ESJ) é uma doença rara, de etiologia autoimune, caracterizada por fibrose tecidual intensa, com acometimento da pele e órgãos internos. O diagnóstico é baseado em critérios clínicos e laboratoriais. A doença é progressiva e limitante e seu tratamento permanece ainda controverso. Neste estudo, relata-se um caso de uma paciente feminina de 14 anos com diagnóstico de ESJ que iniciou ...

A new near-IR luminescent erbium(III) complex with potential application in OLE...

We report the synthesis and X-ray structural characterization of the new Er3+ ternary complex [Er(hd)3(bipy)] (where Hhd is 3,5-heptanedione and bipy is 2,2′-bipyridine) as well as its absorption/luminescent properties. X-ray analysis of the novel complex reveals its triclinic centrosymmetric structure with two symmetry independent complexes in the unit cell. Each lanthanide ion is surrounded by 6 oxygen atoms ...

Involvement of disperse repetitive sequences in wheat/rye genome adjustment

The union of different genomes in the same nucleus frequently results in hybrid genotypes with improved genome plasticity related to both genome remodeling events and changes in gene expression. Most modern cereal crops are polyploid species. Triticale, synthesized by the cross between wheat and rye, constitutes an excellent model to study polyploidization functional implications. We intend to attain a deeper k...

Molecular and cellular mechanisms of Mycobacterium avium-induced thymic atrophy

Antidepressants and suicide in adolescents.

In recent years, drug regulation agencies from the US and the UK have issued warnings concerning the emergence of suicidal behavior in children and adolescents treated with antidepressants. As suicidal behavior is the most feared of the core symptoms of depression, these warnings were naturally met with great concern by mental health care technicians and afflicted patients and families. In this article we have ...

Size matters in Triticeae polyploids: larger genomes have higher remodeling

Review ; Polyploidization is one of the major driving forces in plant evolution and is extremely relevant to speciation and diversity creation. Polyploidization leads to a myriad of genetic and epigenetic alterations that ultimately generate plants and species with increased genome plasticity. Polyploids are the result of the fusion of two or more genomes into the same nucleus and can be classified as allopoly...

Cycloaddition of trifluoromethyl azafulvenium methides: synthesis of new triflu...

The chemistry of trifluoromethyl azafulvenium methides was explored leading to a new route to trifluoromethylpyrrole-annulated systems. The first evidence of azafulvenium methides acting as 1,3-dipoles is reported. These azafulvenium methides showed site selectivity in the reaction with strong electron-deficient dipolarophiles leading exclusively to 1,3-cycloadducts. In the cycloaddition with less-activated dip...