Este trabalho tem como objetivo ser um contributo para a elaboração da Carta de Desporto de Natureza do Parque Natural do Tejo Internacional (PNTI), a fim de ordenar, regular e condicionar a prática de atividades desportivas nesta área protegida, no cumprimento dos objetivos fundamentais que conduziram à sua criação pelo Decreto regulamentar n.º 9/2000 de 18 de Agosto.
A construção do Espaço Europeu de Ensino Superior - Modelo de Bolonha e as Tecnologias da Informação e Comunicação acarretaram mudanças estruturais na gestão das instituições de ensino superior (IES) afetaram todos os serviços e contribuíram para o nascimento de um novo modelo de comunicação, o modelo de comunicação em rede no qual coexistem estudantes com níveis de literacia informacional distintos. Considerando a importância das redes sociais no modelo de comunicação atual realizou-se o presente estudo com objetivo analisar a utilização das redes sociais pelos estudantes para aferir do seu potencial enquanto instrumento de comunicação entre estes e a IES.
Rodrigues, J.P.V.; Andrade, L.P.; Serrano, J.
In Portugal we are facing a fast decrease in the production of good quality wool. This situation can be seen from a qualitative and quantitative point of view by looking at the most extreme situation, which involves almost the extinction of a Merino breed - Merino Beira Baixa (MBB)- due to its inability to produce high milk quantities when subjected to the better hadling of the more intensive production systems. The changes in the production systems and the need for higher milk production for the production of PDD cheese (Protected Designation of Origin - EEC Regulation 2081/92), but without indexation...
Andrade, L.P.; Rhind, S.M.; Wright, I.A.; McMillan, S.R.; Goddard, P.J.; Bramley, T.A.
An experiment was conducted to test the hypothesis that postpartum anoestrus in beef cows is prolonged in cows in low condition (BC) because they have a reduced LH pulse frequency compared with cows in high BC.
Ramos, A.; Delgado, F.M.G.; Afonso, Paulo; Cruchinho, A.; Pereira, Paula; Sapeta, Paula; Ramos, George
A implementação de paradigmas no Ensino Superior resultantes da introdução do Processo de Bolonha abre portas para a renovação. A qualidade passa pela revisão dos curricula, pela reorganização dos processos de ensino-aprendizagem, pela estruturação das unidades curriculares e cursos, pela qualificação e formação de docentes, pelo sucesso e resultados escolares, pela avaliação das competências atingidas e pela confiança social no ensino superior. Em 2010 foi delineado o Projeto “Construção da Aprendizagem” /ConstAp) com o objetivo principal de motivar as mudanças, nomeadamente ao nível das metodologias adotadas e da implementação do trabalho autónomo, para garantir uma carga de trabalho do estudante...
Mateus, Helena; Pereira, Cândido; Cardoso, Miguel; Manteigas, Ana; Sequeira, Manuel; Figueiredo, Elisabete; Luz, J.P.; Mexia, António
A monitorização da população de traça-verde foi efectuada, em olivais da Cova da Beira, em armadilhas com três formulações comerciais de feromona sexual: Russell (em armadilha funil tricolor) e SEDQ e Suterra (ambas em armadilha delta). As contagens, semanais, decorreram: nas armadilhas iscadas com feromona SEDQ, entre Março e Novembro de 2010; nas armadilhas com feromona Russell e Suterra, de Setembro a Novembro. As capturas variaram de 0 a 4 indivíduos/armadilha/semana. Nas armadilhas com SEDQ surgiram indivíduos de um lepidóptero, contaminante, ainda não identificado, mais pequeno, acastanhado e em número mais elevado do que o da traça-verde. Comparando as curvas...
Mateus, Helena; Figueiredo, Elisabete; Luz, J.P.; Silva, Maria do Céu; Mexia, António
Os ataques de traça-verde foram monitorizados em três cultivares de oliveira, ‘Arbequina’, ‘Cobrançosa’ e ‘Galega Vulgar’,numolival de cincoanos de idade e na ‘Galega Vulgar’ também numaparcela com um ano de idade, na zona de Belmonte. As observações decorreram de 5 de Abril a 7 de Novembro de 2010, tendo sido observados os primeiros sintomas em 7 de Julho. ‘Cobrançosa’ foi significativamente menos atacada ao longo de todo o períodode observações, não tendo sido detectadas diferenças significativas entre as restantes. Com o objectivo de procurar explicar o maior ataque à ‘Cobrançosa’, compararam-se as espessuras de folhas das diferentes cultivares em corte...
Caseiro, N.; Alberto, D.
In the last years, entrepreneurship education has increased in importance and presence on the curriculums of different degrees and domains, and is gaining the attention of higher education institutions as well as secondary schools and training centers.
Although the mainstream focus of entrepreneurship is new business creation, it can be argued that there can be a wider application, namely in intrapreneurship and social entrepreneurship, typical subfields of study in the entrepreneurship realm.
This vast possibility requires that education institutions strategically choose the focus of their approach regarding entrepreneurship education but they can also propose a curriculum that encompasses all this. Also, this...
Antunes, I.M.H.R.; Albuquerque, M.T.D.; Oliveira, S.F.
Águeda watershed is a sub-catchement of the Douro river
(northern Portugal) and it is distributed on both Spanish and
Portuguese territories. The main core of this work is the
achievement of a methodological tool able to be used for
vulnerability assessment in ttransboudary watersheds.
Groundwaters’ vulnerability mapping was carried out by
two different methodological approches: DRASTIC and
DRASTIC Pesticide .
DRASTIC is a numerical index derived from ratings and
weights assigned to seven parameters – Deep to water, net
Recharge, Aquifer media, Soil media, Topography, Impact of
the vadose zone and hidraulic Conductivity. The obtained
values raises between 23 (not vulnerable) to 230 (highly
vulnerable). Drastic Pesticide uses...
Ramos, A.; Afonso, Paulo; Cruchinho, A.; Delgado, F.M.G.; Ramos, George; Sapeta, Paula
The transition into the twenty-first century brought about important changes in society, including the areas of education and teaching. The establishment of the European Higher Education Area represents an effort to face these changes together in Europe. The changes in the teaching and learning models in higher education led to the institutional promotion of extensive interventions in order to alter the status quo that has prevailed for decades. The need for a cultural renewal of the teaching staff involved in higher education, attending to the centrality of student’s learning rather than knowledge per se, is also a challenge to be...
Coelho, M.T.; Gonçalves, J.C.; Alves, V.; Martins, M.M.
In the present study, aerial parts of Pterospartum tridentatum plants, collected in three locations in Portugal, at
different vegetative stages, were evaluated for their total phenolic content and the antioxidant activity of aqueous
extracts. The influence of the seasonal variation in the yield and composition of the extracts was evaluated, in order to
select the most appropriate harvest season. Among the populations assayed, the extraction yields have some
differences with the harvest period but the highest yield extraction was obtained in the flowering season, using
flowers (19.4g/100g plant dry mass) and the lowest extraction yield was also obtained in the same period but using
Anjos, O.; Carmona, C.; Caldeira, I.; Canas, S.
Aging systems of wine brandies have been a target of investigation to reduce the costs and aging time. In this study, the extractives and Klason lignin contents of wood fragments used in the aging of wine brandies in stainless steel tanks were evaluated. Two types of wood fragments, known as staves and tablets, and two wood botanical species, Limousin oak (Quercus robur L. from the Limousin region of France) and Portuguese chestnut (Castanea sativa Mill.), with heavy toasting levels were used. The wood extractive and Klason lignin contents were analyzed before and 30 months after the aging of wine brandy....
Anjos, O.; Pereira, H.; Rosa, M.E.
The compression properties of cork were studied
on samples obtained from cork planks of two commercial
quality classes (good and poor quality), with densities ranging
from 0.12–0.20g cm−3 and porosities from0.5 to 22.0%.
The stress-strain curves were characterized by an elastic region
up to approximately 5% strain, followed by a large
plateau up to 60% strain caused by the progressive buckling
of cell walls, and a steep stress increase for higher strains
corresponding to cell collapse. The direction of compression
was a highly significant factor of variation, with cork
showing higher strength for the radial compression.
Density influenced compression and cork samples with
higher density showed overall larger resistance to compression
Caldeira, I.; Anjos, O.; Portal, V.; Belchior, A.P.; Canas, A.
Wooden barrels are used in the ageing or maturation of many alcoholic beverages, namely brandies and
wines. However, the high costs related to ageing in wooden barrels have led to a search for alternative
technologies. In this study we examined the application of wood fragments to the beverage in order to
promote an accelerated ageing. We evaluated the sensory and chemical modifications in brandy aged in
presence of two types of wood fragments, from two different woods (Limousin oak wood and Portuguese
chestnut wood), and compared those with a brandy aged in wooden barrels.
The results of the analysis of variance revealed more significant effects of...
Anjos, O.; Pereira, H.; Rosa, M.E.
The behaviour of cork under tensile stress in the tangential direction was studied using cork planks of two commercial quality classes and samples taken at three radial positions in the cork planks.
The stress–strain curves showed a linear elastic region approximately until 2% strain (stress at 0.4 MPa), followed by a region of decreasing slope up to the fracture at an average stress of 0.6 MPa (strain of 5%).
The radial position in the cork plank was a highly significant factor of variation in the tensile properties. The tensile properties showed statistically significant correlations with cork density and porosity.
Albuquerque, M.T.D.; Silva, M.C.R.; Anjos, O.
Heavy metals contamination in urnab alluvium soils - loures Valley, Lisbon, Portugal.
Anjos, O.; Marques, J.
Preliminary approach about the possibility of correlation between the content of chlorophenols of cork plates and the soil of their origin.
Anjos, O.; Santos, A.; Simões, R.M.
This paper reports on the relationship between the fibre morphology of six Acacia melanoxylon bleached kraft pulps, produced from wood chips with basic densities of 449, 489, 493, 505, 514 and 616 kg/m3, and their papermaking potential.
Anjos, O.; Pereira, H.; Rosa, M.E.
The behaviour of cork under tensile stress in the
axial direction was studied for samples taken from cork
planks of good (class 1) and poor (class 4) quality grades
and at three radial positions within the plank (inner, mid and
outer positions). The effect of cork density (ranging from
0.123 to 0.203 g cm−3) and porosity (ranging from 2.8 to
9.6% in the tangential surface) on Young’s modulus and
fracture stress and strain was studied.
The tensile stress-strain curves of cork showed an elastic
deformation up to 2% strain with a Young’s modulus of
30.8 MPa, and a fracture stress of 1.05 MPa at a strain of
7.1% for class 1,...
Anjos, O.; Pereira, H.; Rosa, M.E.
The behaviour of cork under three point bending
stress in the radial direction was evaluated in relation
to porosity (range 2.0–15.4%) and density (range 0.160–
0.220 g cm−3). The study was made using water-boiled cork
planks of two commercial quality classes (good and poor
quality) collected at an industrial mill. Cork samples were
cut with the largest dimension in two directions, axial and
tangential, and with the load zone in the inner part and the
outer part of the plank.
The stress-strain curves obtained in bending were similar
for the different test specimens and similar to those observed
for tensile tests in cork but the mechanical resistance
of cork in bending was...