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Pólen e Polinização

O grão de pólen é o gametófito masculino das plantas com semente que se forma e desenvolve na antera, a partir de células especializadas(células esporogénicas),sendo posteriormente lançado para a atmosfera. Para além de ser uma estrutura de diminutas dimensões (2 a 200 µm), é parte integrante do ciclo de vida de uma planta, possuindo todas as suas características e potencialidades genéticas. Sendo uma estrutura...

Contribution to EPMA to airbone pollen analysis

Assessing the effects of the meteorological conditions on the pollen wall by EPMA

Contribution to EPMA to airbone pollen analysis

As a component of aerosol, pollen is found in suspension with other mineralogical and anthropogenic particles that can adhere to the pollen wall. The aim of this study was to determine possible alterations that pollen grains suffer under different meteorological conditions in the coastal city of Porto, Portugal. For this study, 2 airborne pollen types were taken into account: Poaceae and Alnus spp sampled in ...

Coping e bem-estar em mulheres com diagnóstico de obesidade

Primeira determinação de prevalência de doença celíaca numa população portuguesa

The prevalence of celiac disease is unknown in Portugal. In European countries the prevalence is between 1:200 and 1:400. The incidence obtained through diagnosed cases in the paediatric gastroenterology units in Portugal was 1:3648. To determine the best current celiac disease screening method and its prevalence in a portuguese population, 536 sera of teenagers with 14 years +/- 6 months from Braga town school...

Primeira determinação de prevalência de doença celíaca numa população portuguesa

The prevalence of celiac disease is unknown in Portugal. In European countries the prevalence is between 1:200 and 1:400. The incidence obtained through diagnosed cases in the paediatric gastroenterology units in Portugal was 1:3648. To determine the best current celiac disease screening method and its prevalence in a portuguese population, 536 sera of teenagers with 14 years +/- 6 months from Braga town school...

Identification of new isolates of Bacillus thuringiensis using rep-PCR products...

PCR has been used to analyze the distribution of REP (Repetitive Extragenic Palindromic) and ERIC (Enterobacterial Repetitive Intergenic Consensus) sequences (rep-PCR) found within the genome of the bacterium Bacillus thuringiensis, with the purpose to analyze the genetic similarities among 56 subspecies samples and 95 field isolates. The PCR products were analyzed by EB-AGE (ethidium bromide-agarose electropho...

Viral infection and fibromyalgia.

Fibromyalgia (FM) is a very frequent syndrome of unknown cause, characterized by generalized pain, fatigue and a number of tender points to palpation. Among the several etiopathogenic hypotheses discussed, the association of FM with some viral infections has been the object of multiple studies due to its relation and similarity with the chronic fatigue syndrome, acknowledges as being related, although not exclu...