Results 51 to 60 of about 35,740 (195)

Testing the size‐grain hypothesis in a generalist predator: The case of an ant species in the Brazilian savannah

Journal of Zoology, Volume 328, Issue 3, Page 234-247, March 2026.
In our recent study, we examined whether ants in the Brazilian Cerrado follow the “grain‐size hypothesis,” which proposes that larger ants should have proportionally longer legs to move efficiently across different environments. We used Ectatomma permagnum, a common predatory ant in the Cerrado, measuring hundreds of individuals collected from various ...
A. Sandim, R. Aranda
wiley   +1 more source

Primeiro registro da quenquém cisco-da-Amazônia Acromyrmex hystrix Latreille (Formicidae: Myrmicinae) para o estado do Maranhão, Brasil

EntomoBrasilis, 2010
Utilizando armadilhas pitfall, registra-se pela primeira vez quatro operárias da formiga quenquém cisco-da-Amazônia Acromyrmex hystrix (Latreille) (Formicidae: Myrmicinae) em uma caverna no estado do Maranhão, região nordeste do Brasil.
Wesley Dáttilo, Ricardo Vicente, Rafael Nunes, Marcela Soares Carvalho   +3 more
doaj   +2 more sources

Qualidade da água de poços tubulares em Iguatama, Minas Gerais

Revista Verde de Agroecologia e Desenvolvimento Sustentável, 2018
O elevado crescimento populacional juntamente com o aumento da geração de resíduos tem modificado a qualidade e disponibilidade das águas tanto superficiais quanto subterrâneas. Este trabalho tem o objetivo de verificar a qualidade da água e a eficiência
Otaviano Teodoro Souza, Paulo Ricardo Frade, Carolina Adélia da Silva Paim Soares   +2 more
doaj   +1 more source

Biological evolution and creationism from the perspective of graduate students of biological sciences

Góndola, Enseñanza y Aprendizaje de las Ciencias, 2020
This work aimed to analyse students’ conceptions in a graduate course of biology teachers at the University Centre of Formiga, Minas Gerais, Brazil, of topics related to evolutionary theory (Chance and Natural selection) and creationism (God and ...
Isabela Maria Silva Leão, Fernanda de Jesus Costa, Graça Simões Carvalho, Heslley Machado Silva   +3 more
doaj   +1 more source

Development and Characterization of Copaiba Oil‐Loaded Polymeric Nanocapsules With Enhanced Antitumor Activity Against Breast Cancer Cells

Particle &Particle Systems Characterization, Volume 43, Issue 1, January 2026.
The present study developed and characterized a novel copaiba oil polymeric nanoparticle (NPOC), which was efficiently internalized by breast cancer cells, exhibited greater cytotoxicity and selectivity than free copaiba oil and standard drug doxorubicin. NPOC also reduced tumor growth and migration in 3D models.
Karinne Kelly Gadelha Marques, Allesya Lara Dantas Formiga, Ramon Ramos Marques de Souza, Isione Oliveira Castro, Heivila Monique da Silva Alexandre, Igor Gabriel da Silva Ramalho, Érika Raisla Melquiades Pereira, Lucas Medeiros Martins Carvalho, Marianna Vieira Sobral, Francisco Humberto Xavier Júnior, Juan Carlos Ramos Gonçalves   +10 more
wiley   +1 more source

Interação mutualística entre Aethalion reticulatum (Hemiptera: Aethalionidae), abelhas-sem-ferrão e formiga, em açaizeiro no estado do Acre. [PDF]

, 2016
Foi verificada a associação entre a cigarrinha-das-frutíferas, Aetalion reticulatum (Hemiptera: Aethalionidade) e duas espécies de abelhas-sem-ferrão do gênero Trigona, além de uma espécie de formiga do gênero Camponotus, em plantas de açaí-de-touceira ...
LIMA, E. M. da, SANTOS, R. S., SILVA, E. N. da   +2 more
core  

Fermion confinement induced by geometry

, 2011
We consider a five-dimensional model in which fermions are confined in a hypersurface due to an interaction with a purely geometric field. Inspired by the Rubakov-Shaposhnikov field-theoretical model, in which massless fermions can be localized in a ...
A. Trautman, C. Dariescu, C. Kiefer, C. Romero, C. Romero, E. Cartan, F. Dahia, F. Dahia, H. Weyl, J. B. Formiga, J. Crawford, K. H. Shankar, K.-F. Shie, M. Israelit, M. Novello, M. Novello, M. P. Carmo do, M. W. Kalinowski, M. Yu. Konstantinov, N. Barbosa-Cendejas, O. Arias, R. Hammond, R. Jackiw, S. S. Seahra, V. A. Fock, V. A. Rubakov, W. Pauli   +26 more
core   +1 more source

Sobre beija-flores, formigas e flores [PDF]

Anais da Escola Superior de Agricultura Luiz de Queiroz, 1979
Relata-se a relação entre beija-flores, formigas e flores de uma malvácea, Abutilon striatum, tendo-se achado que beija-flores e meliponídeos colhem o seu néctar e, uma vez tendo o seu cálice perfurado pelos últimos, são invadidas por formigas.
Flechtmann, Carlos H.W., Rochelle, Luiz A.   +1 more
openaire   +2 more sources

Habitat Amount Shapes Ant Diversity in the Central Amazon

Biotropica, Volume 58, Issue 1, January 2026.
Ant diversity in fragmented Amazonian forest landscapes is primarily driven by landscape‐scale habitat amount rather than fragment size, supporting the Habitat Amount Hypothesis (HAH) over Island Biogeography Theory (IBT). Consequently, conservation strategies should prioritize maintaining and restoring forest cover across human‐modified landscapes ...
Ricardo A. S. Ruaro, Lucas F. Colares, Heraldo L. Vasconcelos, Fabricio B. Baccaro   +3 more
wiley   +1 more source

Innovation Policy in an Emerging Economy: How Regional and Technological Disparities Moderate the Effects of a National Law

Review of Policy Research, Volume 43, Issue 1, January 2026.
ABSTRACT The Innovation Law, enacted in Brazil in 2004, laid the regulatory and institutional foundations for the national innovation system, aiming to promote closer interaction between universities, research institutions, and industry. However, nearly two decades after its implementation, its influence on the national innovation system remains ...
Breno Valente Fontes Araújo, Ana Claudia Azevedo, Fernanda Maria de Almeida, Cristiana Tristão Rodrigues   +3 more
wiley   +1 more source