Programa de Pós-Graduação em Ecologia - PPGECOL/UNICAMP
URI Permanente desta comunidadehttps://repositorio.ufpa.br/handle/2011/9707
Navegar
Navegando Programa de Pós-Graduação em Ecologia - PPGECOL/UNICAMP por Título
Agora exibindo 1 - 2 de 2
- Resultados por página
- Opções de Ordenação
Item Acesso aberto (Open Access) Fauna associada as bromelias Cannistran aff. giganteum (Baker) L. B. Smith e Neoregelia cruenta (R. Graham) L. B. Smith de restinga do litoral norte do Estado de São Paulo(Universidade Estadual de Campinas, 1981) FERREIRA, Clara Pantoja; BENSON, Woodruff Whitman; http://lattes.cnpq.br/7116492347323901An experimental set up for the study of tablets coating in a two-dimensional spouted bed that uses vibration of the perforated base to enhance the circulation of the particles was developed. An acrylic rectangular upper section (4x32 cm) with fixed 4x4 cm draft plates was adjusted over 3 different convergent secctions (inclination 50') with 4x4 cm, 4x6 cm or 4x8 cm bases and contained 800g, 1100g or 1300g of tablets, Air (0,8 to 1,6 m3/min) forced by a 7,5 cv blower, was cooled down to 55°C and spouted this bed. The lenticular tablets (0,12g; 0,25g., 0,44g) were coated with a polymeric aqucous solution (11% solids). A two-fiuid atomizer (air pressure 82,7 1(.Pa) was used, inserted lateraily, near the bed base, and showed no influence on the movement of the particles. The experimental characterization of the tablets circulation rates was emphasized, using a magnet (0,4062 g) that followed the particles, activating a bobbin located at the upper end of the draf plates, The electric pulses were processed by a data acquisition sistem and the cicie time distribution curves were adjusted by the Modiíied Spline fit technique. The mean of the cicie t.in e distribution creased with are increase of the bed load and the size of the ta.blets in ali comparative tests. The vibration (10 Hz, 8 mm amplitude) reduced the mean of the cicie time distribution by more than 10%, and also decreased its variance. The vibration ais() aí ected the maxirnum pressure drop (40% reduction) and the minimum spouting velocity The vibro spouted bed showedhigher- adhesion efficency (73 to 88%) than the non-vibrated spouted bed (66 to 79%) in ali equivalent situations and the complete coating of the smailer tablets dema.nded iess processing time due to higher surface arca circulation rate.Item Acesso aberto (Open Access) Manguezais do Pará: fauna de galerias perfuradas por teredo em toras de Rhizophora(Universidade Estadual de Campinas, 1989-11-29) FERREIRA, Clara Pantoja; AMARAL, Antonia Cecília Zacagnini; http://lattes.cnpq.br/4597417616952392In view of the large area the mangroves occupy in the State of Para’s coast their well-known importance and with the purpose to investigate their plant composition and to demonstrate the importance of the galleries bored in the logs as an habitat to several populations, periodic collects of Rhizophora lags were conducted. Measurements of temperature, pH, salinity and dissolved oxigen were accomplished. The study region was divided into 2 AREAS. The first one located at the Igarape-Curumbá mangrove (Ananindeua), where the collects were carried cut from April 1985 through January 1986 and the second in the Municípios of Benevides, Belém (Mosqueiro Island), Vigia and São Caetano de Odivelas, in which collects were carried out in July 1987 and January 1988. The mangrove stands from both AREAS are well-developped, specially those from Vigia and São Caetano de Odivelas, that are structurally the most developped. Rhizophora wangle was the dominant species in the 2 AREAS. A total of 45 species and 5022 individuals was recorded from the galleries of the 40 Rhizophora logs analysed. CRUSTACEA was the dominant taxon both for individuals and species numbers in almost all Subareas. The amphipode Grandidierella bonnieroides was the dominant species in the fauna composing 43,5% of the total number of individuals. The high in the AREA I reflects the high proport of common species among Subareas. The low values among the species of the Subareas from AREA II indicates that the composition of the fauna found inside the galleries is affected both by the physical and biological conditions to which the Rhizophora logs are submitted. The relatively high species diversity values of the 2 AREAS suggests the existence of stable conditions inside the galleries, allowing biological adaptations and interactions.