Results 21 to 30 of about 187 (126)

Teor de taninos em três espécies medicinais arbóreas simpátricas da caatinga Tannin concentration in three simpatric medicinal plants from caatinga vegetation

Revista Árvore, 2005
O teor de taninos em três espécies medicinais do semi-árido do Nordeste do Brasil foi determinado. A partir de amostras das cascas do caule e folhas de 10 indivíduos de Anadenanthera colubrina (Vell.) Brenam, Myracrodruon urundeuva (Engl.) Fr. All.
Julio Marcelino Monteiro, Ernani Machado de Freitas Lins Neto, Elba Lúcia Cavalcanti de Amorim, Ruth R. Strattmann, Elcida Lima Araújo, Ulysses Paulino de Albuquerque   +5 more
doaj   +1 more source

A low-cost monitoring system of stem water content: Development and application to Brazilian forest species

Smart Agricultural Technology, 2021
The storage of water in the plant and its impacts on eco-hydrological processes are not commonly considered in the models for estimating plant transpiration and evapotranspiration. The high costs required for a wide monitoring network are major obstacles
Geovana Paim Araújo, Lucas Melo Vellame, Juliana Alcântara Costa, Carlos Alexandre Gomes Costa   +3 more
doaj   +1 more source

Spatial pattern analysis and demography of two tropical trees in the Brazilian Caatinga

Pesquisa Florestal Brasileira, 2014
Aspidosperma pyrifolium (Apocynaceae) and Caesalpinia pyramidalis (Fabaceae) share the same habitat in the Brazilian Caatinga domain. In this paper, we investigate the intra and inter-species interactions between these two plants using spatial pattern ...
Maira Fontes Manzan, Cristiane Gouvêa Fajardo, Fábio de Almeida Vieira   +2 more
doaj   +1 more source

Análise da degradação da caatinga no núcleo de desertificação do Seridó (RN/PB) Analysis of degradation of 'Caatinga' in the desertification nucleus of Seridó - Brazil

Revista Brasileira de Engenharia Agrícola e Ambiental, 2009
A condição de aridez associada à pressão antrópica resulta em áreas de degradação extrema, conhecidas como núcleos de desertificação. No núcleo do Seridó a antropização é caracterizada por queimadas, cultivo do algodão no passado, pastoreio e exploração ...
Thomaz C. e C. da Costa, Maria A. J. de Oliveira, Luciano J. de O. Accioly, Flávio H. B. B. da Silva   +3 more
doaj   +1 more source

Rhubarb Tannins Extract Inhibits the Expression of Aquaporins 2 and 3 in Magnesium Sulphate‐Induced Diarrhoea Model

BioMed Research International, Volume 2014, Issue 1, 2014., 2014
Tannins, a group of major active components of Chinese rhubarb and widely distributed in nature, have a significant antidiarrhoeal activity. Aquaporins (AQPs) 2 and 3 play important roles in regulating water transfer during diarrhoea. The present study aims to determine the effect of the total tannins extract of rhubarb on aquaporins (AQPs) 2 and 3 in ...
Chunfang Liu, Yanfang Zheng, Wen Xu, Hui Wang, Na Lin, Paul M. Tulkens   +5 more
wiley   +1 more source

The “Hidden Diversity” of Medicinal Plants in Northeastern Brazil: Diagnosis and Prospects for Conservation and Biological Prospecting

Evidence-Based Complementary and Alternative Medicine, Volume 2013, Issue 1, 2013., 2013
Increases in ethnobotanical studies and knowledge in recent decades have led to a greater and more accurate interpretation of the overall patterns related to the use of medicinal plants, allowing for a clear identification of some ecological and cultural phenomena.
Deyvson Rodrigues Cavalcanti, Ulysses Paulino Albuquerque, Rômulo Romeu Nóbrega Alves   +2 more
wiley   +1 more source

Which Approach Is More Effective in the Selection of Plants with Antimicrobial Activity?

Evidence-Based Complementary and Alternative Medicine, Volume 2013, Issue 1, 2013., 2013
The development of the present study was based on selections using random, direct ethnopharmacological, and indirect ethnopharmacological approaches, aiming to evaluate which method is the best for bioprospecting new antimicrobial plant drugs. A crude extract of 53 species of herbaceous plants collected in the semiarid region of Northeast Brazil was ...
Ana Carolina Oliveira Silva, Elidiane Fonseca Santana, Antonio Marcos Saraiva, Felipe Neves Coutinho, Ricardo Henrique Acre Castro, Maria Nelly Caetano Pisciottano, Elba Lúcia Cavalcanti Amorim, Ulysses Paulino Albuquerque, Rômulo Romeu da Nóbrega Alves   +8 more
wiley   +1 more source

Relações solo-vegetação em áreas sob processo de desertificação no município de Jataúba, PE Soils and vegetation relations in areas under desertification in Jataúba County, Pernambuco State, Brazil

Revista Brasileira de Ciência do Solo, 2008
A degradação das terras na região semi-árida resulta de processos naturais, que podem ser induzidos ou catalisados pelo homem por meio do uso inadequado dos recursos naturais, produzindo a deterioração da cobertura vegetal, do solo e dos recursos ...
Izabel Cristina de Luna Galindo, Mateus Rosas Ribeiro, Maria de Fátima de Araújo Vieira Santos, José Fernando Wanderley Fernandes Lima, Rafael Fernandes de Abreu e Lima Ferreira   +4 more
doaj   +1 more source

Intracultural Variation in the Knowledge of Medicinal Plants in an Urban‐Rural Community in the Atlantic Forest from Northeastern Brazil

Evidence-Based Complementary and Alternative Medicine, Volume 2012, Issue 1, 2012., 2012
This study assessed the intracultural knowledge of the use of medicinal plants in an urban‐rural community in an Atlantic forest fragment in northeastern Brazil. We examined the importance of native and exotic species and the effects of gender and age on that knowledge.
Cecília de Fátima Castelo Branco Rangel de Almeida, Marcelo Alves Ramos, Rafael Ricardo Vasconcelos Silva, Joabe Gomes de Melo, Maria Franco Trindade Medeiros, Thiago Antonio de Sousa Araújo, Alyson Luiz Santos de Almeida, Elba Lúcia Cavalcanti de Amorim, Rômulo Romeu da Nóbrega Alves, Ulysses Paulino de Albuquerque, Ana H. Ladio   +10 more
wiley   +1 more source

SUBSÍDIOS BÁSICOS PARA O MANEJO FLORESTAL DA CAATINGA

Revista do Instituto Florestal, 1992
Neste estudo, utilizaram-se dados de uma vegetação de caatinga na Estação Florestal de Experimentação (EFLEX) do IBAMA, em Açu-RN. Os parâmetros estruturais analisados foram: densidade,frequência, dominância, distribuição diamétrica, posição sociológica
Rinaldo Luiz Caraciolo Ferreira, Antonio Bartolomeu do Vale   +1 more
doaj   +1 more source