Restructuring of production and territorial change: a second industrialization hub in Northern Mexico

Includes bibliography

Brasil: mecanismos de transmisión de la política fiscal. Una investigación empírica

Incluye Bibliografía

Brazil: an empirical study on fiscal policy transmission

Includes bibliography

Brasil: crisis financiera internacional y políticas anticíclicas

Incluye Bibliografía

Brazil: the international financial crisis and counter-cyclical policies

Includes bibliography

Reestructuración productiva y cambio territorial: un segundo eje de industrialización en el norte de México

Incluye Bibliografía

Sediment quality assessment in a tropical estuary: The case of Ceará River, Northeastern Brazil

The present study aimed to assess the sediment quality in a tropical estuary located in the northeast of Brazil under semi-arid conditions and multiple sources of contamination, using both toxicity bioassays and metal distribution. The metal distribution followed a concentration gradient decreasing one order of magnitude from the inner station toward the outer estuary, with amounts in the following order: Fe > Al > Zn > Cr > Pb > Cu. The index of geoaccumulation indicated a metal enrichment in the Ceará river sediment, mainly at inner sites, considered from moderately to strongly contaminated by Al, Cu, Cr and Zn. Sediment samples were considered toxic by means of whole sediment tests with copepods (reproduction) and amphipods (survival), and also elutriate fraction and sediment-water interface with sea urchin embryos (development). Acute and chronic toxicity did not exhibit a significant correlation with metals, emphasizing the influence of other contaminants mainly related to the pollution sources installed in the mid-estuary. © 2013 Elsevier Ltd. All rights reserved.

Effects of artificial substrate and night-time aeration on the water quality in Macrobrachium amazonicum (Heller 1862) pond culture

The effects of artificial substrate and night-time aeration on the culture of Macrobrachium amazonicum were evaluated in 12 ponds stocked with 45 prawns m-2. A completely randomized design in 2 × 2 factorial scheme with three replicates was used. The combination of factors resulted in four treatments: with substrate and aeration (SA), with substrate and without aeration (SWA), without substrate and with aeration (WSA) and without substrate and aeration (WSWA). The presence of substrate in SA and SWA treatments reduced suspended particles (seston) by ~17.3% and P-orthophosphate by ~50%. The use of aerator (WSA and SA treatments) significantly (P < 0.05) increased the concentration of dissolved oxygen, suspended particles and nutrients in the pond water. These results indicate that the effect of substrate on turbidity and total suspended solids (TSS) values is opposite to the effect of the aerator. The aerators in semi-intensive grow-out M. amazonicum farming lower water quality because they increased the amount of detritus and nutrients in the pond water. On the other hand, the use of artificial substrate reduces turbidity values, chlorophyll a, TSS and P-orthophosphate concentrations. Therefore, the combination of substrate addition and night-time aeration is not interesting because they have opposite effects. © 2013 John Wiley & Sons Ltd.

Balanço de nitrogênio em viveiros de crescimento final de Macrobrachium amazonicum com uso de aeração noturna e substratos artificiais

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Estudo da interação entre flavonóides e a albumina do soro humano

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Epidemiologia de Otodectes cynotis (Acari: Sarcoptiformes) e sua associação com a infecção por Malassezia pachydermatis (Cryptococcales: cryptococcaceae) no canal auditivo de cães naturalmente infectados

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo do padrão morfológico e da biologia Eutetranychus banksi (McGregor) (Acari: Tetranychidae) de diferentes locais e hospedeiros

Pós-graduação em Biologia Animal - IBILCE

Diversidade de ácaros em indivíduos masculinos e femininos de Triplaris americana L. (Polygonaceae) e eficiência de seu pólen como alimento para Euseius citrifolius Denmark & Muma (Acari: Phytoseiidae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Biologia de Tenuipalpus heveae Baker (acari, Tenuipalpidae) em três clones de Fevea brasileinsis Muell. Arg. (Euphorbiaceace)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Estudo da atividade acaricida de ésteres de sacarose em ácaros (Acari) de Hevea brasiliensis Mull. Arg. (Euphorbiaceae)

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)