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Catch composition in the fishery for tunas and tuna-likes on aggregated schools in the western equatorial atlanticComposição das capturas na pesca de atuns e afins em cardumes associados no atlântico oeste equatorial
(Karger, 2016)
The present study aims to characterize the catch composition of the fishery for tunas in associated schools in the western equatorial Atlantic. For this purpose, a total of 109 landings on Areia Branca-RN, were observed, ...
Microplastics ingestion by a common tropical freshwater fishing resource
(Elsevier Sci Ltd, 2017)
Microplastics pollution is widespread in marine ecosystems and a major threat to biodiversity. Nevertheless, our knowledge of the impacts of microplastics in freshwater environments and biota is still very limited. The ...
Nutrient discharge, sludge quantity and characteristics in biofloc shrimp culture using two methods of carbohydrate fertilization
(Elsevier Sci Ltd, 2017)
The aim of this study was to evaluate the effect of two methodologies of carbohydrate fertilization on the volume and characteristics of effluent from intensive biofloc shrimp cultivation. Six fiberglass circular tanks (50 ...
Competitive placement of oil perforation zones in hydraulic flow units from centrality measures
(Elsevier Science Bv, 2016)
This paper applies graph centrality measures to suggest a competitive placement of perforation zones in oil reservoirs. Datasets available in an online repository are used to build a synthetic field model in which porosity ...
A comparison between water exchange and settling tank as a method for suspended solids management in intensive biofloc technology systems: effects on shrimp (Litopenaeus vannamei) performance, water quality and water use
(Wiley, 2017)
Biofloc systems rely on microbial processes in the water column to recycle animal waste products, reducing the need for water exchange. These increases biofloc concentration in the water and some form of removal is needed. ...
Headwater stream fish fauna from the upper paranapanema river basin
(Hindawi Publishing Corp, 2016)
The Parana River basin has about 600 fish species. In the Upper Parana, 310 fish species were recorded, with 52 species were registered in the streams and headwaters of the Paranapanema River. The aim of this study was to ...
Simultaneous voltammetric determination of carbendazim and carbaryl in medicinal plant infusions with a boron-doped diamond electrode
(Taylor & Francis Ltd, 2017)
This study is aimed to develop an electroanalytical methodology using a boron-doped diamond electrode to determine simultaneously and selectively carbendazim (CBZ) and carbaryl (CAR). In previous studies using cyclic ...
Thermo luminescence and optically stimulated luminescence characteristics of Al2O3 doped with Tb
(Elsevier B.V., 2014-12-01)
In the present work policrystals of alpha - Al2O3 doped with terbium were synthesized using the solvent evaporation method. the samples were prepared using Al(NO3)(3)center dot 9H(2)O and Tb(NO3)(3).5H(2)O reagents, with ...
Alternative route for the synthesis of high surface-area eta-Al2O3/Nb2O5 catalyst from aluminum waste
(Elsevier Science Sa, 2016)
This paper describes an alternative route for the production of a high-surface-area eta-Al2O3/Nb2O5 catalyst synthesized from aluminum waste and niobium ammonium oxalate (NH4H2[NbO-(C2O4)(3)]center dot 3H(2)O). The effects ...
The influence of allochthonous macroalgae on the fish communities of tropical sandy beaches
(Elsevier B.V., 2014-05-01)
This study evaluates the hypothesis that detached macroalgae (drift algae) influence the structure of fish communities in the surf-zones of two tropical sandy beaches from the central coast of Brazil. Surf-zone seine hauls ...