Diarilpropanos y derivado Indolico en madera de virola sebifera y virola calophylloidea
Revista Colombiana de Química, 2010 De la madera de Virola sebifera fueron aislados tres díarilpropanos: 1-(4'-hidroxi-2'-metoxifenil-3-(3"-hidrox¡-4"-metoxifenil)-propano, Virolanol B y Virolanol C. De la madera de Virola calophylloidea fue aislado el 3-¡ndolcarboxaldehido.
Ruth von Rotz R. +2 more
doaj
Cash income from community-based forest management: Lessons from two case studies in the Brazilian Amazon [PDF]
, 2013 Community based forest management (CBFM) is seen as an alternative way of protecting forests while also generating income for small land-holders. Since the mid-1990s, the number of CBFM projects has increased in the Brazilian Amazon.
Drigo, Isabel +3 more
core
The Use of Violence in Illegal Markets: Evidence from Mahogany Trade in the Brazilian Amazon [PDF]
Agents operating in illegal markets cannot resort to the justice system to guarantee property rights, to enforce contracts, or to seek protection from competitors' improper behaviors. In these contexts, violence is used to enforce previous agreements and
Chimeli, Ariaster B., Soares, Rodrigo R.
core +3 more sources
Estudo papeleiro da mistura dos "rolos-restos" das fábricas de compensados do Estado do Amazonas [PDF]
Acta Amazonica, 1982 Resumo Nesta pesquisa é apresentado o estudo da mistura dos "rolos-restos" das Fábricas de Compensado do Estado do Amazonas, tendo em vista o seu aproveitamento pela indústria de celulose a papel.
Antônio de Azevedo Corrêa
doaj +1 more source
Deposição de serapilheira e de nutrientes de duas espécies da Amazônia. [PDF]
, 2015 A capacidade da Floresta Amazônica em desenvolver-se sobre solos com baixa disponibilidade de nutrientes e com grande produção de biomassa deve-se à eficiente deposição e rápida liberação dos elementos minerais mediante a decomposição da serapilheira e ...
MARTINS, E. G. +2 more
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Phytochemical and Pharmacological Investigations of Virola oleifera Leaves
Zeitschrift für Naturforschung C, 2001 Abstract A methanolic extract and two fractions (n-hexane and ethyl acetate) from Virola oleifera leaves and some compounds (one lignan and two flavonoids) were investigated to verify the analgesic activity by using the writhing test in mice.
K N, Kuroshima +5 more
openaire +2 more sources
Ecohydrology, Volume 18, Issue 2, March 2025.ABSTRACT The Cerrado sensu stricto, so‐called wooded Cerrado, is one of the many phytophysiognomies of the undisturbed Brazilian Cerrado ecoregion holding a biodiversity hotspot towards an extensive area. Thus, such land is under constant land use and cover changes mainly due to the demand for agriculture land, sector with the highest consumption of ...
Alex N. A. Kobayashi +5 more
wiley +1 more source
Distribuição de raízes e acúmulo de macronutrientes e AL+++ em espécies florestais plantadas em latossolo amarelo da Amazônia Brasileira. [PDF]
, 2015 A formação e distribuição de raízes bem como o conteúdo de macronutrientes e AI foram estudadas em Ceiba pentandra e ViroIa surinamensis. As raízes foram separadas em raízes finas « 2 mm); casca e madeira das raízes grossas (> 2 mm) e casca e madeira da ...
DÜNISCH, O. +2 more
core
The effect of the G-Layer on the viscoelastic properties of tropical hardwoods [PDF]
, 2012 International audienceContext and aim : This study aimed to examine the effect of the tension wood G‐layer on the viscoelastic properties of wood. Methods : Tension wood and opposite wood samples were obtained from six French Guianese tropical rainforest
Arnould, Olivier +3 more
core +3 more sources
Tree species controls over nitrogen and phosphorus cycling in a wet tropical forest
Ecological Monographs, Volume 95, Issue 1, February 2025.Abstract Wet tropical forests play an important role in the global carbon (C) cycle, but given current rates of land‐use change, nitrogen (N) and phosphorus (P) limitation could reduce productivity in regenerating forests in this biome. Whereas the strong controls of climate and parent material over forest recovery are well known, the influence of ...
Ann E. Russell +4 more
wiley +1 more source