Buscar
Mostrando ítems 31-40 de 1401
Fish ladders select fish traits on migration - still a growing problem for natural fish populations
(Taylor & Francis Ltd, 2009-01-01)
We investigated the potential selective effect of fish ladders on physiological and morphological profiles of the curimbata, Prochilodus lineatus, during reproductive migration in Brazil. We registered sex, body weight and ...
Dam methylation regulates the expression of SPI-5-encoded sopB gene in Salmonella enterica serovar Typhimurium
(Elsevier, 2014-05)
DNA adenine methylation is an essential factor in Salmonella virulence. Here, we investigate the involvement of DNA adenine methylase (Dam) in the expression and translocation of a SPI-5-encoded effector of S. Typhimurium. ...
Characterization of colostrum from dams of BLV endemic dairy herds
(Elsevier Science, 2015-06)
Bovine Leukemia Virus (BLV) is endemic in Argentina, where the individual prevalence is higher than 80% in dairy farms. The aim of this work was to find preliminary evidence to know if the high level of infection of the ...
Análise de integridade física de barragens de terra a partir da integração do método geofísico da eletrorresistividade com ensaios geotécnicos
(Universidade Estadual Paulista (Unesp), 2016-04-15)
Dams are structures that dam rivers and streams for a variety of purposes. These structures, often need to be sturdy to withstand the force of the impoundment and the high values of accumulated water load. The constant ...
Characterization of colostrum from dams of BLV endemic dairy herds
(Elsevier, 2015-06)
Bovine Leukemia Virus (BLV) is endemic in Argentina, where the individual prevalence is higher than 80% in dairy farms. The aim of this work was to find preliminary evidence to know if the high level of infection of the ...
Os pontos cegos no tratamento jurídico dos desastres envolvendo barragens de rejeitos de mineração
(Universidade Federal de Santa MariaBrasilDireitoUFSMPrograma de Pós-Graduação em DireitoCentro de Ciências Sociais e Humanas, 2021-03-05)
This research aims to investigate the blind spots in the legal treatment of disasters involving mining tailings dams. For that, it was developed based on Luhmann's Systemic Theory. Sociological authors such as Beck, and ...
Diatom responses to natural and anthropogenic environmental changes in a Patagonian river, Argentina
(Pergamon-Elsevier Science Ltd, 2020-10)
The Chubut River is a Patagonian river that flows from the Andes to the Atlantic Ocean, and is interrupted by a dam built at the middle valley. To investigate the sedimentary history of the lower river basin, a sediment ...
A floodplain with artificially reversed flood pulse is important for migratory and rare bird species
(Soc Brasileira Ornitologia, 2017-09-01)
Wetlands are increasingly scarce and the construction of water-flow regulation structures is predicted to increase in the coming years. The correct management of these impacted areas may play an important role in the ...
A floodplain with artificially reversed flood pulse is important for migratory rare bird species
(2017-09-01)
Wetlands are increasingly scarce and the construction of water-flow regulation structures is predicted to increase in the coming years. The correct management of these impacted areas may play an important role in the ...
Complexity Analyses of Sao Francisco River Streamflow: Influence of Dams and Reservoirs
(American Society of Civil Engineers, 2020-10)
This study investigated the potential of methods from information science to detect hydrological alterations caused by human activity. In particular, the influence of the construction of a cascade of dams and reservoirs ...