Results 81 to 90 of about 399,951 (230)

Chemical Profiling and Biological Activity of Copaiba Oil‐Resin Samples and Development of HPLC‐DAD Method for the Analysis of β‐Caryophyllene

open access: yesBiomedical Chromatography, Volume 40, Issue 5, May 2026.
ABSTRACT The Copaifera species are traditionally used for their anti‐inflammatory, antiseptic and healing properties. The objective of this study was to compare the chromatographic profiles of seven samples of copaiba oil‐resin with respect to chromatographic and physicochemical properties and to evaluate their biological activities.
Gabriel de A. P. Graça   +13 more
wiley   +1 more source

Impactos do Programa Bolsa Floresta: uma avaliação preliminar (Cadernos de Sustentabilidade) [PDF]

open access: yes, 2014
Este estudo trata do Programa Bolsa Floresta (PBF), um dos maiores programas de Pagamento por Serviços Ambientais (PSA) do mundo, com mais de 35 mil pessoas atendidas em 15 Unidades de Conservação Estaduais (UCs) do Amazonas.
Afrânio Soares   +5 more
core  

Habilidades sociales, apoyo familiar y clima escolar en alumnos de sexto curso

open access: yes, 2023
[Resumo] Fundamentando na teoria bioecológica e da resiliência, o objetivo deste estudo foi analisar em que medida a percepção de um conjunto de fatores de proteção (habilidades sociais, suporte familiar e clima escolar) difere conforme as características sociodemográficas como sexo e reprovação escolar de alunos do 6º ano.
Penna-de-Carvalho, Aline   +3 more
openaire   +1 more source

Sustainability in Managed Aquifer Recharge Projects: A Case Study of Three European Union Funded Projects

open access: yesWorld Water Policy, Volume 12, Issue 2, May 2026.
ABSTRACT Managed aquifer recharge (MAR) is presented as a water management approach that fits well within the broad sustainability agenda. Three European MAR projects' outcomes were analyzed to assess how these projects interpret sustainability. This article argues that MAR projects are pushed to a narrow interpretation of sustainability by funder ...
Helen Sundberg, Klaas Schwartz
wiley   +1 more source

La perspectiva intercultural en los libros para la enseñanza de lenguas modernas.Un enfoque histórico [PDF]

open access: yes, 2006
This paper analyses the pedagogical and practical approaches to the teaching of culture which were used in a range of popular French, Spanish, Italian and German grammars and text-books published in the XIX century in Europe and America.
Gallardo, Matilde
core  

Examination of Ozone Sensitivity to Stomatal Conductance in Urban Areas

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 7, 16 April 2026.
Abstract Stomatal conductance is a key factor in controlling ozone deposition velocity. Little is known about stomatal conductance and its impacts on air quality in urban areas because urban vegetation in developed land cover types is often omitted in global and regional models.
Dandan Wei   +3 more
wiley   +1 more source

Factores escolares asociados a los aprendizajes en la educación primaria mexicana: un análisis multinivel [PDF]

open access: yes, 2008
Este artículo aborda cuatro problemas de investigación: i) determinar la capacidad de las escuelas primarias mexicanas para incidir en los aprendizajes de matemáticas y lectura; ii) conocer los factores asociados a estos resultados; iii) explorar la ...
Blanco Bosco, Emiliio
core   +1 more source

Vegetal residue‐based formulation of Trichoderma ossianense, a new indigenous vineyard species adapted to alkaline pH with potential biocontrol ability against Black‐foot disease pathogens

open access: yesPest Management Science, Volume 82, Issue 4, Page 2910-2924, April 2026.
The study identifies Trichoderma ossianense, was can be isolated from grapevine roots, is capable of growing at alkaline pH and controls black‐foot pathogens, highlighting the vegetal residue‐based formulations that preserve its viability. Abstract BACKGROUND Fungi of the Trichoderma genus are used in vineyards as biological control agents mainly ...
Laura Zanfaño   +7 more
wiley   +1 more source

Local climate and genetic influence on intraspecific variation in torpor physiology of a cave‐roosting bat

open access: yesFunctional Ecology, Volume 40, Issue 4, Page 857-867, April 2026.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Many small endotherms employ torpor as a survival strategy to reduce energy expenditure during periods with low food availability and cold temperatures. The expression and physiology of torpor can vary substantially within species because of phenotypic plasticity and ...
Nicholas C. Wu   +2 more
wiley   +1 more source

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