Biomphalaria molluscs (Gastropoda: Planorbidae) in Rio Grande do Sul, Brazil.

Comparative study of degradation of PP modified with organic pro-degradant subjected to natural and artificial ageing

In abiotic degradation the action of light radiation is one of the most important parameters, because polymers undergo degradation due to the action of light (natural or artificial). The aim of this study was to investigate the degradation rate for samples of polypropylene (PP) modified with an organic pro-degradant submitted to ageing in a natural environment and to accelerated ageing test. Th...

Impact of silver ions and silver nanoparticles on the plant growth and soil microorganisms

There is a growing consumer market for products that proclaim to decrease microorganism counts to prevent infections. Most of these products are loaded with silver in its ionic or nanoparticle form. Through use or during production, these particles can find their way into the soil and cause an impact in microbial and plant communities. This study aims to evaluate the impact of silver based part...

First report of Biomphalaria glabrata in the state of Rio Grande do Sul, Brazil.

Dominant character of the molecular marker of a Biomphalaria tenagophila strain (Mollusca: Planorbidae) resistant to Schistosoma mansoni.

Biomphalaria tenagophila population from Taim (state of Rio Grande do Sul, Brazil) is totally resistant to Schistosoma mansoni, and presents a molecular marker of 350 bp by polymerase chain reaction and restriction fragment length polymorphism of the entire rDNA internal transcriber spacer. The scope of this work was to determine the heritage pattern of this marker. A series of cross-breedings ...

Variations in the Prevalence of Risk Factors for Coronary Artery Disease in Rio Grande do Sul-Brazil: A Comparative Analysis

Disease in Rio Grande do Sul-Brazil: A Comparative Analysis between 2002 and 2014 Iseu Gus1, Rodrigo Antonini Ribeiro2, Sérgio Kato1,4,5, Juliano Bastos2 ̧ Claudio Medina3, Claudio Zazlavsky1, Vera Lucia Portal1, Rita Timmers1, Melissa Medeiros Markoski1, Carlos Antônio Mascia Gottschall1 Instituto de Cardiologia do Rio Grande do Sul Fundação Universitária de Cardiologia1; Universidade Federal d...