Results 61 to 70 of about 6,239 (214)

In vitro and in vivo assessement of the antimalarial activity of sergeolide [PDF]

open access: yes, 1985
L'activité antiplasmodiale, in vitro, in vivo du Sergeolide, Quassinoide isolé de #Picrolemma pseudocoffea$ a été mesurée, in vitro, sur des cultures de #Plasmodium faliciparum$ et in vivo par le test classique de la mesure de l'activité schizonticide ...
Fandeur, T.   +2 more
core   +1 more source

Physiological and Growth Responses of Tropical Dry Forest Tree Seedlings to Water and Nutrient Additions: Comparisons Between Nitrogen Fixers and Non‐Fixers

open access: yesBiotropica, Volume 57, Issue 5, September 2025.
This study examined the physiological and growth responses of tropical dry forest tree seedlings to water and nutrient additions, comparing nitrogen (N)‐fixing and non‐fixing species. The results showed that N‐fixing species responded more strongly to nutrient addition, accumulating significantly more biomass and increasing height growth rate. Overall,
Erick Calderón‐Morales   +5 more
wiley   +1 more source

Diversidade taxonômica e padrões de distribuição geográfica em Picramnia (Simaroubaceae) no Brasil Taxonomic diversity and geographic distribution patterns of Picramnia (Simaroubaceae) in Brazil

open access: yesActa Botânica Brasílica, 1990
O gênero neotropical Picramnio Sw., tem 19 espécies no Brasil, das quais 12 são exclusivamente brasileiras. Os principais padrões de variação e distribuições geográfica e ecológica desses taxa, permitem o reconhecimento de algumas categorias de espécies:
José Rubens Pirani
doaj   +1 more source

Bioactivity-Guided Isolation Of Ailanthus Malabarica For Toxoplasma Gondii And Cholinesterase Inhibitory Activities [PDF]

open access: yes, 2017
Tumbuh-tumbuhan daripada Ailanthus genus diedarkan secara meluas di seluruh Asia dan memainkan peranan penting sebagai tumbuhan perubatan. Aktivitiaktiviti biologi spesies Ailanthus telah dikaji secara meluas dan didapati mempunyai aktiviti seperti anti ...
Lee, Yuan-E
core  

Flora das cangas da Serra dos Carajás, Pará, Brasil: Simaroubaceae

open access: yesRodriguésia
Resumo Simaroubaceae está representada na Serra dos Carajás por duas espécies pertencentes a Simaba (S. cedron e S. guianensis) e uma a Simarouba (S. amara).
Marcelo Fernando Devecchi   +1 more
doaj   +1 more source

Effect of Pest Control Strategies on Arthropod Pests of Apple in Europe: A Meta‐Analysis

open access: yesJournal of Applied Entomology, Volume 149, Issue 6, Page 957-987, July 2025.
ABSTRACT Apple (Malus domestica Borkh.) is a major fruit crop in Europe. More than 200 phytophagous arthropod species thrive in European apple orchards, several of which are economically important pests. Due to the pest pressure on apple production, consumer demand for residue‐free products and current policies to make food production in the European ...
Ingrid Aline Bapfubusa Niyibizi   +2 more
wiley   +1 more source

20(R)- and 20(S)-Simarolide Epimers Isolated from Simaba cuneata: Chemical Shifts Assignment of Carbon and Hydrogen Atoms

open access: yesJournal of the Brazilian Chemical Society, 1999
The C25-quassinoids 20(R)- and 20(S)-simarolide were isolated from Simaba cuneata, Simaroubaceae. The structures of these two compounds were characterized by spectral data, including 1D and 2D NMR spectra which were also used for the complete assignment ...
Vieira Ivo José Curcino   +5 more
doaj  

New records of woodboring beetles (Coleoptera: Buprestidae) for the eastern United States [PDF]

open access: yes, 2020
An abundance-based checklist of eastern Buprestidae (Coleoptera) was compiled from collection records from invasive insect surveys conducted during 2010–2018. Reported are 111 species in 17 genera based on 33,047 specimens examined from 10 states.
Barringer, Lawrence
core   +2 more sources

Across 33 broad‐leaved deciduous woody species, silicon enhances leaf lamina stiffness but not tensile strength whereas cellulose enhances both

open access: yesNew Phytologist, Volume 246, Issue 5, Page 2075-2083, June 2025.
Summary Silicon (Si) has been hypothesized to be a metabolically cheaper substitute for carbon‐based cell wall components to support leaves. However, how the biomechanical function of Si, deposited as amorphous silica, differs from cell wall components remains untested. Here, we tested the hypothesis that species with higher leaf Si concentrations have
Hirofumi Kajino   +2 more
wiley   +1 more source

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