3,893 research outputs found
O escritor e a (I Grande) Guerra: testemunho e comemoração
De molde a explorar as modalidades de representação e o trabalho de memória (Ricoeur 2000] em torno da I Guerra, debruçar-me-ei sobre duas obras literárias separadas entre si por um século: A malta das trincheiras [1918], um conjunto de crónicas do escritor português, André Brun, e 14 [ 2012), romance do escritor francês, Jean Echenoz. Além da respectiva contextualização no quadro comunicacional em que se integra a literatura, a minha leitura relacional propõe-se destacar as mudanças na representação da Grande Guerra a partir do papel quer do humor na relação com a experiência, quer da ironia na relação com o passado evanescente
What determines the export performance? : a comparative analysis of China and India in the European Union
This paper aims to assess the competitiveness of exports of manufactured
goods from China and India to the European Union in the 2000s. The empirical analysis
is based on two methodologies: (i) a Constant Market Share analysis which allows to decompose the export growth to the European market into several components
including an effect usually related to competitiveness, and (ii) an analysis based on the combination of revealed comparative advantage indexes with a geographic orientation of trade which allows to identify the products of China and India that appear to have export potential
As Jovens e a Contraceção de Emergência: Vivências da sexualidade
Resumo
Ser adolescente…jovem faz parte do percurso do ser
humano no seu crescimento e desenvolvimento. É dos
períodos da vida mais saudáveis e de conquista que se têm ao
longo da vida. No entanto, atendendo aos comportamentos de
risco, nomeadamente aos que surgem naturalmente fruto desta
fase de desenvolvimento, e às novas realidades com que os
jovens se defrontam socialmente no seu quotidiano, torna-se
pertinente entender este período de vida e as particularidades
que nele assume a sexualidade. Com Portugal a ocupar o lugar
cimeiro entre os jovens europeus infetados com o VIH/SIDA
(Frade et al., 2006; Matos, 2010) e com gravidezes
indesejadas, a sexualidade na adolescência é um tema
importante na atualidade portuguesa.
O presente estudo teve como objetivos: compreender
os significados atribuídos pela jovem à vivência da sua
sexualidade; compreender os significados atribuídos pela
jovem à experiência de utilização de contraceção de
emergência. Participaram no estudo vinte e três (23) jovens do
sexo feminino, todas utilizadoras do Gabinete de Apoio à
Sexualidade Juvenil, de uma Delegação Regional da Zona
Centro do Instituto Português da Juventude. Recorreu-se a uma abordagem fenomenológica, tendo-se para o efeito
selecionado a entrevista semiestruturada como instrumento de
colheita de dados. Para a análise dos dados optou-se pela
proposta de Análise Fenomenológica de Max Van Manen
(1997).
Dessa análise emergiram cinco grandes temas. Este
artigo analisa um desses grandes temas: a Contraceção de
Emergência como recurso na gravidez indesejada. São
apresentadas diferentes subcategorias e subsubcategorias.
As jovens manifestam uma forte preocupação com
as gravidezes indesejadas, mas o uso inadequado de métodos
contracetivos e o recurso a métodos pouco eficazes levam-nas
ao uso da Contraceção de Emergência em situações extremas.
Está subjacente a toda esta prática, a falta de preocupação com
as Infeções Sexualmente Transmissíveis (IST).Abstract
Being an adolescent…a youth, is part of the path in a
human being’s growth and development. It is a period of life
brimming with health, achievement and promise.
Nevertheless, due to risk behaviours, including those which
occur as a natural part of this stage of development and the
new realities adolescents face in their day-to-day social lives,
it is worth understanding this period of life as well as the
particular part sexuality plays in it. With Portugal in the top
position among young Europeans infected with HIV/AIDS
(Frade et al., 2006; Matos, 2010) and unwanted pregnancies,
adolescent sex is an important issue in Portugal today.
The aim of this study was to understand the meanings
attributed by adolescents to experience their sexuality and to
understand the meanings attributed by adolescents to
experience of use of emergency contraception for some young
users of the Youth Sexuality Support Office [Gabinete de
Apoio à Sexualidade Juvenil] of a Delegation for the Central
Region [Delegação Regional da Zona Centro] of the
Portuguese Youth Institute [Instituto Português da Juventude]
by a phenomenological approach. A semi-structured interview
was used to collect the data and twenty-three (23) young
women participated in the study. The Max Van Manen (1997)
Phenomenological Analysis was selected to analyse the data. From this analysis, five major themes emerged. This
article examines one of these topics: Emergency
Contraception as a resource in unwanted pregnancies. We
present different subcategories and sub-subcategories.
The young females showed a strong preoccupation
with unwanted pregnancy by the inadequate use of
contraception and ineffective methods leading to requiring
emergency contraception in extreme situations. An underlying
issue to this entire practice is the lack of concern regarding
Sexually Transmitted Diseases
The role of e-marketing as in specific contexts of sports tourism
Athletics is a sport that is going through several
difficulties in Portugal, essentially at the financial level, since
support and sponsorships are less and less, blocking the construction
of financial sustainability, which is reflected in a reduction of medals
won in international competitions. Thus, the application of sports
and e-marketing to athletics becomes essential, as it will allow us to
understand what consumers want, create attachment and paying
attention to their preferences, habits and interests. The aim is to
promote athletics in Portugal, to provide an increase in the number
of sports tourists. The methodology based on the observation of
competitions, conducting interviews applied to the study. From the
results of this research, it is concluded that athletics disciplines do
not meet an adequate e-marketing strategy, with low dissemination
in the media. With a focus on some athletics clubs of Portugal and
in the Athletics Federation of Portugal, this research aims to
contribute to perspectives in the connection between e-marketing and
sports tourism, applying specifically to a case study: athletics in
Portugal.UNIAG, R&D unit funded by the FCT – Portuguese Foundation
for the Development of Science and Technology, Ministry of
Science, Technology and Higher Education. Project no.
UIDB/04752/2020.info:eu-repo/semantics/publishedVersio
Electrospun Polycaprolactone/Aloe Vera_Chitosan Nanofibrous Asymmetric Membranes Aimed for Wound Chelinga Applications
Today, none of the wound dressings available on the market is fully capable of reproducing all the features of native skin. Herein, an asymmetric electrospun membrane was produced to mimic both layers of skin. It comprises a top dense layer (manufactured with polycaprolactone) that was designed to provide mechanical support to the wound and a bottom porous layer (composed of chitosan and Aloe Vera) aimed to improve the bactericidal activity of the membrane and ultimately the healing process. The results obtained revealed that the produced asymmetric membranes displayed a porosity, wettability, as well as mechanical properties similar to those presented by the native skin. Fibroblast cells were able to adhere, spread, and proliferate on the surface of the membranes and the intrinsic structure of the two layers of the membrane is capable of avoiding the invasion
of microorganisms while conferring bioactive properties. Such data reveals the potential of these asymmetric membranes, in the near future, to be applied as wound dressings
Nutritional value of the cryptophyte rhodomonas lens for artemia sp
Juvenile or adult Artemia sp. are often used as live prey for the rearing of early life stages of some crustacean, fish and cephalopod species. The improvements of both Artemia growth and its biochemical composition are key issues for the suitable use of Artemia biomass in these rearing processes. In this study we evaluated the growth and survival rates of Artemia fed with the cryptophyte Rhodomonas lens in comparison with different microalgal species commonly used in aquaculture: the prasinophyte Tetraselmis suecica, the prymnesiophyte Isochrysis galbana Parke, and the eustigmatophyte Nannochloropsis gaditana. Microalgae were cultured semicontinuously in nutrient saturated conditions and with a daily renewal rate of 30% of the volume of cultures, to obtain biomass of controlled and optimized composition. Considerable differences in Artemia growth were observed, as well as in the survival rate. At day 8 of rearing, Artemia fed R. lens had the highest length (4.9± 0.6 mm, P< 0.001), followed by individuals fed T. suecica (4.2± 0.7 mm), I. galbana (3.6± 0.7 mm) and finally those fed N. gaditana (1.5± 0.2 mm). The survival rate of Artemia fed N. gaditana (18± 3%) was much lower (P< 0.001) than values found for the remaining groups (69 to 88%). The growth rate of Artemia obtained with R. lens was in general much higher than with other microalgal diets previously reported in the literature. The higher protein content of R. lens could explain the higher growth obtained with this species, but differences of Artemia growth with the different diets could not be explained solely on the basis of the gross composition of microalgae. Factors such as cell size and digestibility all seem to contribute to the results observed. Another trial was carried out to investigate differences in Artemia growth and on its biochemical composition when fed the best two diets: R. lens or T. suecica. The fatty acid (FA) and total amino acid (AA) composition of both microalgal species and the composition of Artemia were assessed as well. As found in the first experiment individuals fed R. lens (group ARHO) grew faster than those fed T. suecica (group ATET), attaining 3.6± 0.3 mm and 3.2± 0.4 mm (P< 0.001), respectively, after 5 days of rearing. The much higher AA content obtained in R. lens may be on the basis of the higher growth obtainedwith this species. Protein and carbohydrate levels in Artemia juveniles were very similar in both groups (64– 68% of dry weight, and 8–10%, respectively). Lipid was slightly lower in ARHO (12%) than in ATET (15%, P< 0.01). Regarding the FA composition, juveniles from group ARHO contained higher levels of eicosapentaenoic acid (EPA, 6.2%) than juveniles from ATET (4.1%, P< 0.01), whereas docosahexaenoic acid (DHA) was only found in juveniles from ARHO (1.1%). Taking into account that the daily productivity of R. lens culture was higher than, or at least equal, the remaining microalgal species this cryptophyte is confirmed as an excellent diet to optimize the growth of Artemia, as well as to improve its biochemical composition
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