Results 41 to 50 of about 4,343 (210)

Composition and Antinociceptive Activity of the Essential Oil from Protium Heptaphyllum Resin [PDF]

Natural Product Communications, 2007
The chemical composition of the essential oil from Protium heptaphyllum resin was analyzed by GC/MS and the oil examined for antinociceptive activity in chemical and thermal tests. Fourteen compounds were characterized, representing 95.8% of the total essential oil, with the monoterpenes α-phellandrene (10.4%), α-terpinene (13.7%) and 1,8-cineole (58 ...
Vietla S. Rao, Juliana L. Maia, Francisco A. Oliveira, Thelma L.G. Lemos, Mariana H. Chaves, Flavia A. Santos   +5 more
openaire   +2 more sources

Potencial regenerativo de espécies arbóreas em fragmento de Mata Atlântica, Pernambuco, Brasil

Revista Verde de Agroecologia e Desenvolvimento Sustentável, 2017
Objetivou-se caracterizar o estrato regenerante de um fragmento de Floresta Ombrófila Densa das Terras Baixas, mediante avaliações da riqueza, estrutura e diversidade. Para estimar os índices de regeneração natural por espécie para cada classe de tamanho
Rosival Barros de Andrade Lima, Luiz Carlos Marangon, Fernando José Freire, Ana Lícia Patriota Feliciano, Roseane Karla Soares da Silva   +4 more
doaj   +1 more source

Cromatografando em coluna com resina de almécega: um projeto para química orgânica experimental Column chromatography with almécega resin: a project for experimental organic chemistry

Química Nova, 2007
The use of natural products to demonstrate the silica gel column chromatography technique is proposed in the present article. It describes the separation of the triterpenes alpha- and beta-amirin from the diol breine and maniladiol, obtained from ...
Gerardo Magela Vieira Júnior, Adonias Almeida Carvalho, Wellington de Abreu Gonzaga, Mariana H. Chaves   +3 more
doaj   +1 more source

Avaliação da inflamabilidade de espécies nativas do cerrado

Biotemas, 2020
Na ocorrência de incêndios florestais, a propagação se deve principalmente às características das folhas. De certa forma, as folhas funcionam como potencializador ou retardador da propagação de incêndios, já que as que possuem baixa inflamabilidade podem
Marcileia Dias de Oliveira, Josué Luiz Marinho Junior, Angela Helena Silva Mendes Stival, Bárbara Gomes Ferreira, Francisca de Cássia Silva da Silva, Marcos Vinícius Giongo Alves   +5 more
doaj   +1 more source

Phytosociology of the Cerrado tree species in nearby sanitary landfill areas [PDF]

, 2010
Os depósitos de resíduos domiciliares são construídos em áreas adjacentes a fitofisionomias nativas. Os objetivos deste trabalho foram, em áreas adjacentes a aterros e em áreas-controle, realizar e comparar o levantamento da composição das espécies ...
Imaña Encinas, José, Santana, Otacílio Antunes   +1 more
core   +2 more sources

Ecological aspects of Langsdorffia hypogaea (Balanophoraceae) parasitism in the Pantanal wetlands

Acta Botânica Brasílica, 2015
Most studies on holoparasitic plants have focused on taxonomic or systematic issues. The objective of this study was to examine the ecological aspects of parasitism of Langsdorffia hypogaea (Balanophoraceae) in the Pantanal wetlands.
Carlos Rodrigo Lehn, Suzana Maria Salis, Patrícia Póvoa Mattos   +2 more
doaj   +1 more source

Seasonal forests and ecotone areas in the state of Tocantins, Brazil : structure, classification and guidelines for conservation [PDF]

, 2013
O objetivo deste estudo foi descrever a riqueza, estrutura e diversidade de espécies arbóreas em áreas de Floresta Estacional e ecótono (Floresta Estacional/Floresta Ombrófila) no estado do Tocantins, buscando subsídios para a conservação, manejo ...
Damasco, Gabriel, Dias, Ricardo Ribeiro, Fagg, Christopher William, Fagg, Jeanine Maria Felfili, Haidar, Ricardo Flores, Pinto, José Roberto Rodrigues, Silva, Lucas de Carvalho Ramos   +6 more
core   +1 more source

Active Essential Oils and Their Components in Use against Neglected Diseases and Arboviruses

Oxidative Medicine and Cellular Longevity, Volume 2019, Issue 1, 2019., 2019
The term neglected diseases refers to a group of infections caused by various classes of pathogens, including protozoa, viruses, bacteria, and helminths, most often affecting impoverished populations without adequate sanitation living in close contact with infectious vectors and domestic animals.
Emanuela Coutinho Luna, Isadora Silva Luna, Luciana Scotti, Alex France M. Monteiro, Marcus Tullius Scotti, Ricardo Olímpio de Moura, Rodrigo Santos Aquino de Araújo, Kadja Luana Chagas Monteiro, Thiago Mendonça de Aquino, Frederico Fávaro Ribeiro, Francisco Jaime Bezerra Mendonça Junior, Ryoji Nagai   +11 more
wiley   +1 more source

To move or to evolve: contrasting patterns of intercontinental connectivity and climatic niche evolution in “Terebinthaceae” (Anacardiaceae and Burseraceae) [PDF]

, 2014
Many angiosperm families are distributed pantropically, yet for any given continent little is known about which lineages are ancient residents or recent arrivals.
Andrea Weeks, Douglas C. Daly, Felipe Zapata, John D. Mitchell, Paul V. A. Fine, Susan K. Pell   +5 more
core   +2 more sources

Forest Structure and the Species Composition of the Parque Estadual Mata Atlântica, Located in Goiás State, Brazil

International Journal of Ecology, Volume 2018, Issue 1, 2018., 2018
The Parque Estadual Mata Atlântica (PEMA), Goiás state, Brazil, is an Atlantic Forest reserve which has not been studied yet. The aims were to investigate plant biodiversity and characterize the flora to support the management plan. We adopt the point‐centered quarter method to inventory the tree‐shrub and lianas with the diameter at breast height more
Ismael Martins Pereira, Jovan Martins Rios, Vagner Santiago do Vale, Vera Lúcia Gomes-Klein, Ademilson Coneglian, Ednaldo Cândido Rocha, L. M. Chu   +6 more
wiley   +1 more source