Glass in Cultural Heritage – An Introduction

Proceedings of the Chemistry and Conservation Science

Manutenção e conservação de sinalização em autoestradas: caso de estudo: A8 autoestrada do oeste

Relatório de Estágio para obtenção de grau de Mestre em Engenharia Civil na Área de Especialização em Vias de Comunicação e Transportes

Otimização da Hidrofugação do Couro Wetwhite

O processo de hidrofugação é definido como um tratamento efetuado com gorduras e agentes químicos, nomeadamente polímeros e acrílicos que dão características de lubrificação e propriedades hidrofóbicas ao material, cujas etapas são adicionadas na fase de recurtume. Um dos objetivos principais foi a obtenção de um couro com alto grau hidrofóbico, isto é um couro com baixo poder de absorção da água, resistência a sua penetração e conservação da permeabilidade ao vapor de água, sem a utilização do sal de crómio na fase de fixação, e mais pelas problemáticas ambientais que existem na atualidade com o uso deste metal no mundo dos couros. É de salientar que, o único parâmetro que foi possível analisar, de acordo com a disponibilidade do laboratório foi a percentagem de absorção da água. Portanto, para este trabalho escrito foram desenhadas uma série de ensaios, onde se testaram inúmeros produtos utilizados na indústria de produção dos couros, alterando-se fatores de temperatura, dosagem, posição dos produtos aplicados, tempos, entre outros parâmetros, de modo a obter um couro com melhores resultados na percentagem de absorção. A hidrofugação é um processo bastante delicado e mais quando se tenta produzir um couro isento de metais e com alto poder hidrofóbico. Os resultados obtidos experimentalmente apontam para uma percentagem de absorção de cerca de 30% para espaços de tempo de 10 minutos, utilizando sempre sais de alumínio na etapa de fixação, pelo que ainda se requer mais investigação para obter um couro wet-white sem adição de sais metálicas e com alto poder de absorção.

Early diagnosis of relapse in borderline leprosy: two case reports

Two cases of relapse in borderline leprosy were reported. Despite the late-reversal, reaction-like feature, the suspicion of relapse in both was based on persistent and slow-developing skin lesions and an absence of acute neuritis or reaction during one year of follow-up. The authors have considered this possible occurrence in lepromatous borderline-treated patients after their immune cellular restoration and defend that not all Type 1 reactions would be an inflammatory answer to persistent Mycobacterium leprae, but that they could be. Therefore, a relapse diagnosis could be applied and it is more advisable, as one year of Multi-Drug Therapy (MDT) is less dangerous and more efficient for these cases than one year of corticosteroids.

BAT-BORNE RABIES IN LATIN AMERICA

The situation of rabies in America is complex: rabies in dogs has decreased dramatically, but bats are increasingly recognized as natural reservoirs of other rabies variants. Here, bat species known to be rabies-positive with different antigenic variants, are summarized in relation to bat conservation status across Latin America. Rabies virus is widespread in Latin American bat species, 22.5%75 of bat species have been confirmed as rabies-positive. Most bat species found rabies positive are classified by the International Union for Conservation of Nature as “Least Concern”. According to diet type, insectivorous bats had the most species known as rabies reservoirs, while in proportion hematophagous bats were the most important. Research at coarse spatial scales must strive to understand rabies ecology; basic information on distribution and population dynamics of many Latin American and Caribbean bat species is needed; and detailed information on effects of landscape change in driving bat-borne rabies outbreaks remains unassessed. Finally, integrated approaches including public health, ecology, and conservation biology are needed to understand and prevent emergent diseases in bats.

An Atlas for the future National Park: Las Cumbres de la Sierra de Guadarrama

Dissertation submitted in partial fulfillment of the requirements for the Degree of Master of Science in Geospatial Technologies.

A arte efémera e a conservação: o paradigma da arte contemporânea e dos bens etnográficos

O livro reúne as comunicações apresentadas no Encontro "A Arte efémera e a conservação: o paradigma da arte contemporânea e dos bens etnográficos", realizado entre 6 a 7 de Novembro no Museu do Oriente (Lisboa).

Arquitetura Flutuante: projetar uma habitação-tipo para um ambiente em transformação

Dissertação de mestrado integrado em Arquitectura

Relatório de atividade profissional

Dissertação de mestrado em Ciências - Formação Contínua de Professores (área de especialização em Biologia e Geologia)

Palatability of the Asian clam Corbicula fluminea (Müller 1774) in an invaded system

Dissertação de mestrado em Ecology

Perceção das crianças do segundo ciclo do ensino básico em relação aos cetáceos

Dissertação de mestrado em Ecologia

Reúso do património do movimento moderno: a panificadora de Vila Real

Dissertação de mestrado integrado em Arquitectura (área de especialização em Cultura Arquitectónica)

Review of the breeding status of birds in Rio Grande do Sul, Brazil

Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management and conservation actions for these organisms. Comprehensive reviews of this kind of information are lacking for most Neotropical regions, including Rio Grande do Sul, the southernmost Brazilian state. Aiming to update the knowledge on the reproductive status of birds in Rio Grande do Sul, we reviewed breeding records of all potential breeding species recorded in the state using a set of predefined, restrictive criteria for accepting breeding evidences as effective. Data satisfying our criteria were available for 165 species in the literature. We also collected novel breeding information obtained in the state for an additional 126 species, including observations for several species whose reproductive biology is poorly known. Among these are birds previously unknown to breed in Brazil. This new data and the critical review of the previous information resulted in a total of 291 species for which breeding evidences are accepted as effective. This corresponds to 54.7% of the 532 species considered either confirmed or potential breeders in the state. In addition to providing information on nesting dates, clutch size, nest architecture and breeding behavior of south Brazilian birds, our review serves as a benchmark for the adequate assessment of avian breeding records elsewhere. We hope to stimulate observers to rigorously document breeding events, especially for taxa for which basic information is lacking.

Effects of environmental factors on community structure of Leptophlebiidae (Insecta, Ephemeroptera) in Cerrado streams, Brazil

We analyzed the effects of environmental factors on abundance, species richness, and functional group richness of Leptophlebiidae in 16 sampling points along four Cerrado streams. Across three periods of 2005, we collected 5,492 larvae from 14 species in stream bed substrate. These species belong to three functional feeding groups: scrapers, filtering collectors and shredders. The abundance and species richness were not affected by water quality, but habitat quality related to presence of riparian vegetation had positive effects on the abundance of shredders. Our results add important information on the natural history of the species and functional groups of aquatic insects and also provide relevant data for the monitoring and conservation of streams in the Brazilian Cerrado.

A new species of Leiostracus (Gastropoda, Pulmonata, Orthalicoidea) from Espírito Santo, Brazil

A remarkable new species of pulmonate land snail was found in the collection of the Senckenberg Forschungninstitut und Naturmuseum Frankfurt (Frankfurt am Main, Germany) and is described here as Leiostracus faerie sp. nov. It can be easily identified by its small and translucent shell with fine axial light brown bands and its protoconch sculpture. It was collected in the Rio Doce ("Doce River") region in Espírito Santo, Brazil, an area known for a high diversity and endemicity of land snails. This discovery shows how little this fauna is known and reinforces the importance of museum collections in the study of biodiversity and conservation.