When is the Haar measure a Pietsch measure for nonlinear mappings?

We show that, as in the linear case, the normalized Haar measure on a compact topological group $G$ is a Pietsch measure for nonlinear summing mappings on closed translation invariant subspaces of $C(G)$. This answers a question posed to the authors by J. Diestel. We also show that our result applies to several well-studied classes of nonlinear summing mappings. In the final section some problems are proposed

Avaliação de dano e controle da cigarrinha-das-pastagens em plantas de milho com diferentes idades.

bitstream/item/48322/1/Pesq.And.-2.pd

Epidemiology and pathology of bovine schistosomiasis in Mozambique

AIM: To study the epidemiology and pathology of bovine schistosomiasis in Mozambique. BACKGROUND: - Bovine schistosomiasis is of great importance in Africa. It is caused by Schistosoma bovis; - In bovines the symptoms are similar to humans, mainly intestinal, hepato-splenic, vesical and genital; - It has been shown to be endemic through all Africa and in some Mediterranean countries (Portugal, Spain, Italy, Iraque and Israel); - Hybrids of S. haematobium and S. bovis are known to infect humans.N/

Crescimento do arroz irrigado influenciado pelo manejo de nitrogênio baseado no uso do clorofilômetro.

O objetivo desse estudo foi avaliar a influência do manejo do N baseado no uso do clorofilômetro no crescimento do arroz irrigado, visto que uma das maiores dificuldades é a sincronização da época de adubação com a época de maior demanda pela planta

Laurolactam as a stabilizer against the thermo-oxidative degradation of poly(ether-ester)

In this study we examined the influence of laurolactam on the thermo-oxidative degradation of a copolymer of poly(butylene terephthalate) and polybutylene glycol and of di(ethyleneglycol) dibenzoate, used as model compound. The degradation was followed by measurement of the oxygen uptake, FTIR and 1H-NMR spectroscopy and measurement of the intrinsic viscosity changes during degradation. A stabilizing effect of laurolactam on the thermo-oxidative degradation could be observed, as an induction time was defined in which hydroperoxides were not formed and molecular weight was kept constant. After this period the oxygen uptake, hydroperoxide formation and polymer conversion increased more slowly

University Student's perceptions of hazing : a gender approach

The initiation rituals that freshmen are subjected to in universities have been characterized quite differently, although the most frequent view is that it is a rough experience for those coming to higher education for the first time. Gender has emerged as a differentiating variable of how students experience this practice. In this study, our interest is to find out the perceptions of university students over the events that take place during the entry to higher education through a comparative gender analysis. The sample included247 students of both genders. Data were collected by means of the scale 'Evaluation of Bullying Situations in Higher Education Hazing', which consists of 15 items and three factors: 'positive relationship with hazing', ‘negative relationship with hazing’ and ‘social dimension’. Findings indicate that, in the overall scale, there are significant differences between genders, with boys expressing a stronger agreement with the practice. In the analysis by dimension, this fact is reinforced, since in the 'positive relationship with hazing', boys exhibit significantly higher results than girls. In the distribution of variables in the two-dimensional space (CatPCA), we witness that, despite agreeing with hazing practices, boys display a very heterogeneous behavior, while girls more homogeneously disagree with them.info:eu-repo/semantics/publishedVersio

Colorimetric Assessment of BCR-ABL1 Transcripts in Clinical Samples Via Gold Nanoprobes

Gold nanoparticles functionalized with thiolated oligonucleotides (Au-nanoprobes) have been used in a range of applications for the detection of bioanalytes of interest, from ions to proteins and DNA targets. These detection strategies are based on the unique optical properties of gold nanoparticles, in particular, the intense color that is subject to modulation by modification of the medium dieletric. Au-nanoprobes have been applied for the detection and characterization of specific DNA sequences of interest, namely pathogens and disease biomarkers. Nevertheless, despite its relevance, only a few reports exist on the detection of RNA targets. Among these strategies, the colorimetric detection of DNA has been proven to work for several different targets in controlled samples but demonstration in real clinical bioanalysis has been elusive. Here, we used a colorimetric method based on Au-nanoprobes for the direct detection of the e14a2 BCR-ABL fusion transcript in myeloid leukemia patient samples without the need for retro-transcription. Au-nanoprobes directly assessed total RNA from 38 clinical samples, and results were validated against reverse transcription-nested polymerase chain reaction (RT-nested PCR) and reverse transcription-quantitative polymerase chain reaction (RT-qPCR). The colorimetric Au-nanoprobe assay is a simple yet reliable strategy to scrutinize myeloid leukemia patients at diagnosis and evaluate progression, with obvious advantages in terms of time and cost, particularly in low- to medium-income countries where molecular screening is not routinely feasible. Graphical abstract Gold nanoprobe for colorimetric detection of BCR-ABL1 fusion transcripts originating from the Philadelphia chromosome

Praxe académica : meio de integração ou ações de humilhação?

Esta investigação incidiu sobre o modo como estudantes de uma instituição portuguesa de ensino superior percecionam a praxe académica e situações de bullying na praxe. Os dados foram recolhidos através da escala de “Avaliação das situações de Bullying nas Praxes do Ensino Superior”, organizada em três fatores: Relação Positiva com a Praxe, Relação Negativa com a Praxe e Dimensão Social (Matos, Jesus, Simões & Nave,2010). Participaram no estudo 247 estudantes de ambos os sexos, entre os 18 e os 43 anos, de diferentes anos, cursos e departamentos. Os resultados indicaram diferenças significativas a nível da Relação Positiva com a Praxe entre o género (masculino e o feminino; p=0.001 < α=0.05) e entre faixas etárias (“20 ou menos anos” e com “mais de 20 anos”; p=0.024 < α=0.05). Permitiram, também, observar diferenças significativas entre os anos dos cursos (1º, 2º ou 3º ano) a nível da Relação Positiva com a Praxe (p=0.04 < α=0.05) e da Dimensão Social (p=0.017 < α=0.05). Finalmente indicaram diferenças significativas entre os departamentos de pertença dos alunos no que concerne à Relação Positiva com a Praxe (p=0.02 < α=0.05) e à Relação Negativa com a Praxe (p=0.02 < α=0.05). As correlações obtidas entre os três apresentaram-se estatisticamente significativas, considerando nível de significância de 1% (respetivamente, p=0.02; p=0.00 e p=0.00).ABSTRACT - This research focuses on how students from a Portuguese higher education institution perceive hazing practices and bullying situations in hazing practices. Data were collected through the scale “Avaliação das Situações de Bullying nas Praxes do Ensino Superior” (Evaluation of Situations of Bullying in Hazing Practices in Higher Education), organized in three dimensions: Positive Relation with the Hazing Practices; Negative Relation with the Hazing Practices and Social Dimension (Matos, Jesus, Simões & Nave, 2010). 247 students of both sexes, aged 18 to 43 years old and from different grade levels, courses and departments have taken part in this study. The results confirm significant differences in Positive Relation with the Hazing Practices between males and females (p=0.001< α=0.05) and among age groups (“20 years old or less” and “more than 20 years old”; p=0.024<α=0.05). Furthermore, they allow us to observe significant differences between the students’ grade levels (1st, 2nd or 3rd year) taking into account the Positive Relation with the Hazing Practices (p=0.04<α=0.05) and the Social Dimension (p=0.017<α=0.05). Besides, significant differences have been noted between the departments where students belong regarding Positive Relation with the Hazing Practices (p=0.02<α=0.05) and Negative Relation with the Hazing Practices (p=0.02<α=0.05). The correlations between the three subscales (Positive Relation with the Hazing Practices, Negative Relation with the Hazing Practices and Social Dimension) are statistically significant, taking in consideration the significance levels of 1% (respectively p=0.02; p=.00 and p=0.00)

Olhares femininos sobre a praxe académica

VII Congresso Internacional A Vez e a Voz das Mulheres Migrantes em Portugal e na Diáspora: Mobilidades, Tempos e Espaços. Porto, 11 a 13 de junho de 2015 (Comunicação).A praxe académica tem estado sob a mira dos gestores das instituições de ensino superior, sendo apontada como causadora de danos severos na vida do estudante recém-chegado. A investigação apresenta dados controversos. Por um lado, dá a conhecer casos em que veteranos e caloiros afirmam as atividades da praxe promotoras da integração dos recém-chegados e da convivência entre estudantes. Por outro lado, dá a conhecer casos que corroboraram a ideia de práticas deliberadas do exercício da desigualdade de poderes. Esta última perspetiva surge mais entre o sexo feminino, situação que assume particular acuidade numa sociedade onde a violência de género ainda é um fenómeno marcante. O presente estudo visa contribuir para a compreensão desses acontecimentos iniciáticos na ótica de género. Comparam-se perceções sobre a relação com a praxe em estudantes do sexo masculino e feminino de uma instituição de ensino superior português. Participaram no estudo 247 estudantes, 91 do sexo masculino e 156 do sexo feminino, a frequentar o 1º Ciclo de Estudos. Os dados foram recolhidos através da escala de “Avaliação das situações de Bullying nas Praxes do Ensino Superior”, composta por 15 itens organizados em três dimensões: Relação Positiva com a Praxe, Relação Negativa com a Praxe e Dimensão Social. Os resultados obtidos com recurso a um conjunto de técnicas estatísticas apropriadas informam que na escala global existem diferenças significativas (U=4683.50; p=0.042< α=0.05) entre rapazes (mm=120.57) e raparigas (mf=102.69), com os rapazes a evidenciarem melhor relação com a praxe. Na análise por dimensões este dado é robustecido, pois os rapazes apresentam resultados significativamente mais elevados do que as raparigas na Relação Positiva com a Praxe (mm=126.88; mf=98.35; U= 4060; p=0.001 < α=0.05). Nas outras duas dimensões as diferenças observadas não têm significância estatística. Estes resultados parecem chamar a atenção para a importância do acolhimento, integração e socialização das estudantes, cuja tonalidade ainda aparece como menos positiva.N/