Important energy exchanges at soil surface regulate the thermal environment within top soil layer and the boundary layer above it. By this reason, the application of mulches or the modelling of micro relief by soil tillage are common practises to modify the thermal regime of a soil. The aim of this study is to compare the effect on thermal behaviour of a Luvisol resulting of soil tillage and the application of ...
2008
Leaf area expansion and accumulation of dry matter during the establishment of pea(Pisum sativum L., var. Ballet), maize (Zea mays L., var. Lorena) and sunflower (Helianthus annuus L., var. Florasol) were studied at different temperatures and soil moisture contents in a Vertisol (Lisboa) and a Luvisol (Évora) from June 1995 to November 1996. Measurements were made of soil temperature at 2 and 4 cm depth, air te...
2006
Measurement of telomerase activity in clinically obtained tumor samples may provide important information for use as both a diagnostic marker and a prognostic indicator for patient outcome. In order to evaluate telomerase activity in tumor tissue without radiolabeling the product, we developed a simple telomeric repeat amplification protocol-silver-staining assay that is less time-consuming, is safe and require...
OBJETIVO: Diarréia aguda é enfermidade freqüente em países subdesenvolvidos. Este estudo teve a finalidade de avaliar os fatores clínicos e epidemiológicos associados ao óbito em 17 crianças, dentre 511 hospitalizadas com diarréia aguda na Fundação Hospital Ïtalo Brasileiro Umberto I, entre janeiro de 1989 e dezembro de 1995. PACIENTES E MÉTODOS: Os pacientes foram divididos em 2 grupos: óbito e sobrevida, de a...
Financiadores do RCAAP | |||||||
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |