Results 41 to 50 of about 10,126 (183)

Morphometric differences of Microgramma squamulosa (Kaulf.) de la Sota (Polypodiaceae) leaves in environments with distinct atmospheric air quality

open access: yesAnais da Academia Brasileira de Ciências, 2014
Plants growing in environments with different atmospheric conditions may present changes in the morphometric parameters of their leaves. Microgramma squamulosa (Kaulf.) de la Sota is a neotropical epiphytic fern found in impacted environments.
LEDYANE D. ROCHA   +4 more
doaj   +1 more source

Intestinal Biomarkers and Their Importance in Canine Enteropathies. [PDF]

open access: yesVet Med Int
Enteropathies are prevalent in dog internal medicine, and their diagnosis involves a lengthy process. One of the tests requested is for biomarkers, which are important as they can provide data on intestinal functionality, intensity of inflammation, and response to treatment, and can help determine the prognosis. This study aimed to conduct a literature
Oliveira IM   +11 more
europepmc   +2 more sources

Melting temperature of screened Wigner crystal on helium films by molecular dynamics

open access: yes, 2004
Using molecular dynamics (MD) simulation, we have calculated the melting temperature of two-dimensional electron systems on $ 240$\AA-$ 500$\AA helium films supported by substrates of dielectric constants $ \epsilon_{s}=2.2-11.9$ at areal densities $n ...
J. A. R. da Cunha   +4 more
core   +1 more source

Avaliação de biofertilizantes, extratos vegetais e diferentes substâncias alternativas no manejo de tripes em cebola em sistema orgânico. [PDF]

open access: yes, 2004
Avaliou-se substâncias alternativas no manejo de tripes (Thrips tabaci Lind.), em cebola, cv, Crioula, no sistema orgânico. Os experimentos foram conduzidos na EPAGRI, Ituporanga (SC).
ABREU Jr. H.   +21 more
core   +2 more sources

AVALIAÇÃO BIOQUÍMICA DO ÁCIDO SIÁLICO COMO BIOMARCADOR TUMORAL EM NOVILHAS CRIADAS EM PROPRIEDADE ENDÊMICA PARA HEMATÚRIA ENZOÓTICA DOS BOVINOS

open access: yesCiência Animal Brasileira, 2011
A Pteridium aquilinum (samambaia) é um dos vegetais tóxicos mais preocupantes em vários países do mundo, frequentemente verificada como causadora de quadros de toxidez em bovinos.
Marcos Coelho de Carvalho   +5 more
doaj   +1 more source

Analysis of the preservative treatment influence on tropical timbers surfaces color and roughness [PDF]

open access: yes, 2015
Embora os tratamentos químicos aumentem a durabilidade da madeira, efeitos indiretos são obtidos com o emprego de alguns desses produtos, como a modificação da sua cor original e alterações em sua superfície. O objetivo do presente trabalho foi avaliar a
Costa, Alexandre Florian da   +2 more
core   +2 more sources

Monitoring Acid–Base Titrations on Wax Printed Paper Microzones Using a Smartphone

open access: yesMicromachines, 2017
This study describes the use of a smartphone for monitoring acid–base titrations on wax printed paper microzones. An array of twelve microzones of 5 mm diameter each was wax printed on filter paper.
Sandro A. Nogueira   +4 more
doaj   +1 more source

Nonextensivity in Geological Faults?

open access: yes, 2006
Geological fault systems, as the San Andreas fault (SAF) in USA, constitute typical examples of self-organizing systems in nature. In this paper, we have considered some geophysical properties of the SAF system to test the viability of the nonextensive ...
Abe   +44 more
core   +1 more source

Samambaias e licófitas no Brasil

open access: yes, 2023
Finalistas Prêmio Jabuti Acadêmico. Idealizado e organizado pelo Núcleo de Pteridologia da Sociedade Botânica do Brasil, este livro aborda aspectos da biologia e da taxonomia das samambaias e licófitas a partir de estudos realizados na flora brasileira.
openaire   +1 more source

Historical shifts, geographic biases, and biological constraints shape mammal species discovery

open access: yesJournal of Systematics and Evolution, EarlyView.
Taxonomic descriptions of mammals have become more robust from 1990 to 2025, with increased specimen sampling, broader comparisons, and more integrative methods. However, disparities remain: tropical and small‐bodied species are less comprehensively described, reflecting ongoing geographic and biological biases.
Matheus de T. Moroti   +5 more
wiley   +1 more source

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