Encontrados 37 documentos, a visualizar página 1 de 4
Pseudohipoparatiroidismo Tipo I.— Caso Clínico
Sampaio, M.ª L.; Stone, R.; Medeira, A.; Cordeiro, I.; Antunes, N. Lobo; Madeira, M.; Salomão, R.; Santos, I.; Santos, Heloísa; Rosa, F. CoelhoO Pseudohipoparatiroidismo (PHP) é uma doença de transmissão genética. descrita por Albright em 1942 e constitui o primeiro síndrome endócrino em que se reconheceu resistência dos orgãos alvo a uma hormona. Foram também associadas a esta situação um conjunto de alterações fenotípicas, denominadas Osteodistrofia Hereditária de Albright (OHA) que, no entanto, podem também surgir sem alteração dos níveis de Cálcio...
Effects of biochar on available P fractions, soil properties and P uptake by pl...
Auxtero, E.; Madeira, M.; Monteiro, M.C.H.Low phosphate (P) availability is one of the major problems in most Ferralsols from Angola, due to the strong ability of these soils to adsorb P, thereby limiting its bioavailability for crop production (Ucuassapi, 2006). Application of biochar as soil amendment, along with superphosphate and rock phosphate fertilizers may be useful in increasing supply of available P. However, appropriate P management strategi...
Biomass and nutrient dynamics in Mediterranean seasonal dimorphic
Simões, M.P.; Madeira, M.; Gazarini, L.To analyze biomass and nutrient dynamics of Mediterranean seasonal dimorphic shrubs, aboveground biomass (AGB) and belowground biomass (BGB), litterfall (LF), aboveground net annual primary production (ANPP), and nutrient allocation and turnover were estimated in Cistus salviifolius and C. ladanifer, during two years, in southern Portugal. AGB, BGB, LF, and ANPP of C. salviifolius are within the range reported ...
Extractability of P in major soils of Angola as affected by P fertilizers and l...
Auxtero, E.; Madeira, M.; Monteiro, M.C.H.Phosphorus (P) deficiency is the major constraint to crop production in most tropical soils (Sahrawat et al., 2001). In Angola, such constraint (i.e, low concentration and low P solubility) has also been reported to limit crop production in many agricultural soils (Ucuassapi, 2006). These soils may require application of inorganic P through soluble and relatively reactive phosphate rock sources, and lime (Dober...
Comparison of Biomass and Nutrient Dynamics Between an Invasive and a Native Sp...
Neves, J. P.; Simões, M.P.; Ferreira, L. F.; Madeira, M.; Gazarini, L. C.Two saltmarsh species, the native Arthrocnemum macrostachyum (AM) and the invasive Spartina densiflora (SD), were compared in terms of monthly variation of above and belowground biomass, and nutrient (N, P, K, Ca, Mg, Mn) concentrations, over 1 year, in Castro Marim saltmarsh, Portugal. Net aboveground primary productivity was also estimated by two different methods. Above and belowground biomass were higher in...
Phosphate desorption in luvisols and solonetz from a Mediterranean region
Monteiro, M.C.H.; Monteiro, F.; Madeira, M.Poster apresentado no 6th International Phosphorus Workshop, que decorreu em Sevilha de 27 de Setembro a 1 de Outubro de 2010. ; Transfer of P from soil to water is controlled by the P retention capacity in the solid phase, namely by the equilibrium between adsorbed and precipitated forms. Desorption of P and/or phosphate dissolution govern the amount of P released into drainage water, runoff or freshwater. So...
Ability of Cistus L. shrubs to promote soil rehabilitation in extensive oak woo...
Simões, M. Paula; Madeira, M.; Gazarini, L.To assess the ecological function of Cistus salviifolius (CS) and C. ladanifer (CL) shrubs in evergreen oak woodlands, a study was conducted over a 4-year period in southern Portugal. Annual potential return of bio-elements to the soil through litterfall and throughfall, and necromass on soil surface under shrub canopies were assessed along with the dynamics of leaf litter decomposition. Soil bulk density and s...
Concentrações e fluxos de nutrientes no gotejo e escorrimento do tronco de Frax...
Madeira, M.; Abreu, F.G.; Pereira, E.The effect of the ash-tree (Fraxinus angustifolia Vahl) crown on characteristics of throughfall and stemflow solutions was assessed in wet pastures located in north eastern Portugal. The amounts de gross rainfall, throughfall and stemflow were measured continuously and samples were periodically collected to determine pH, dissolved organic C (DOC) and N (DON), and nutrients. The annual fluxes of DOC, DON, Cl, K,...
Comportamento do fósforo em solos argiluviados da Região do Alentejo: sorção de...
Monteiro, M.C.H.; Monteiro, F.; Madeira, M.O Encontro decorreu na Universidade do Algarve. ; O poster apresenta os resultaos de um estudo sobre o comportamento do fósforo em solos argiluviados da Região do Alentejo.
Effect of bentonite characteristics on the elemental composition of wine
Catarino, Sofia; Madeira, M.; Monteiro, F.; Rocha, F.; Curvelo-Garcia, A.S.; Sousa, R.BrunoPhysical, chemical, and mineralogical characteristics of six bentonites were assessed and related to their elemental release to wine. Extraction essays of bentonites in wine at three pH levels were carried out. The multielemental analysis of bentonites and wines was performed by atomic absorption spectrometry (AAS) and inductively coupled plasma mass spectrometry (ICP-MS). Bentonite addition resulted in signifi...
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