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Effect of phosphorus on the attenuation of lead and chromium

This study analyses the adsorption of Pb(II) and Cr(III) in soils. These metals are commonly found together in nature in urban wastes or industrial spillages, and the theoretical approach of the work was to evaluate the response of the soil to continuous Cr and Pb spillages to soil in terms of several physicochemical parameters. The influence of an anthropogenic input of phosphorus was evaluated. Continuous flo...

2.º Seminário "Intervenção Raiana no Combate à Desertificação" : Livro de resumos

O 1.º Seminário Raiano de Combate à Desertificação, realizado em Castelo Branco, em 20 e 21 de Janeiro de 2011, com o patrocínio dos Ministérios da Agricultura, do Desenvolvimento Rural e das Pescas de Portugal, do Ministério do Ambiente e do Meio Rural e Marinho de Espanha e do Conselheiro de Agricultura e Desenvolvimento Rural da Junta da Extremadura, focalizou-se nas problemáticas do Despovoamento e do Aband...

Comportamento agronómico de um fertilizante orgânico em ensaio de campo com dua...

O comportamento agronómico de um fertilizante orgânico autorizado em agricultura biológica foi estudado num ensaio de campo em duas estações de crescimento sucessivas em que na primeira (outonoinverno) se cultivou nabiça (Brassica rapa L.) e na segunda (inverno-primavera) se cultivou cevada (Hordeum vulgare L.). O fertilizante orgânico ensaiado tem composição média de 10% humidade, 5% N, 5% P20 5 e 3% K20. Os t...

Produção e azoto recuperado por nabiça e cevada cultivadas em vasos a partir de...

O fornecimento de azoto à agricultura biológica pode ser feito através da aplicação de fertilizante orgânicos comerciais. Contudo, estes tendem a ter preços elevados. Assim, é importante obter informação sobre o seu valor agronómico para auxiliar na tomada de decisão. Neste trabalho estudou-se a libertação de azoto e efeito na produção de um fertilizante orgânico autorizado para agricultura biológica por compar...

The effect of the prorosity/cement ratio on the compression of cemented soil

Evaluation of genotype resistance testing for salvage antiretroviral therapy at...

The availability of HIV-1 genotype resistance testing (GRT) to clinicians has been insufficiently studied outside randomized clinical trials. The present study evaluated the outcome of salvage antiretroviral therapy (ART) recommended by an expert physician based on GRT in a non-clinical trial setting in Ribeirão Preto, Brazil. A prospective, open, nonrandomized study evaluating easy access to GRT at six Brazili...

Mitochondrial haplogroup H1 is protective for ischemic stroke in Portuguese pat...

BACKGROUND: The genetic contribution to stroke is well established but it has proven difficult to identify the genes and the disease-associated alleles mediating this effect, possibly because only nuclear genes have been intensely investigated so far. Mitochondrial DNA (mtDNA) has been implicated in several disorders having stroke as one of its clinical manifestations. The aim of this case-control study was to ...

Mitochondrial haplogroup H1 is protective for ischemic stroke in Portuguese pat...

The genetic contribution to stroke is well established but it has proven difficult to identify the genes and the disease-associated alleles mediating this effect, possibly because only nuclear genes have been intensely investigated so far. Mitochondrial DNA (mtDNA) has been implicated in several disorders having stroke as one of its clinical manifestations. The aim of this case-control study was to assess the c...

Contribution à l’étude du nannoplacton du leg 12, «sites» 118-119 (Ocean Atlant...

This paper reports a Scanning Electron Microscopy study of some samples from the leg 12, Deep Sea Drilling Project, sites 118 and 119. The chronostratigraphic distribution, the frequency of the species identified and the datation of the samples studied are presented. In accordance with the calcareous nannofossil zonation proposed by E. MARTINI (1971) the samples from site 118 are ascribed to the Upper Miocene w...

Notes sur la géologie et la paleontology du Miocène de Lisbonne

This note deals with the stratigraphical and paleontological study of the Palença section on the southern bank of the river Tagus, Portugal, and specially with its coccolithophorids. Three main lithostratigraphical units may be recognized: the lowest one does correspond to the upper part of COTTER's division II, the intermediate one to divisions III and IV-a, the third corresponding to pratically the whole divi...