Results 61 to 70 of about 88,078 (198)

New Insights About the Role of Sn‐Rich and Pb‐Rich Phases Over the Corrosion Mechanism of Low‐Tin Quaternary Bronze Alloys Under Sulfur‐Containing Conditions

Materials and Corrosion, EarlyView.
A mechanistic proposal for the initial steps of quaternary bronze corrosion in media containing sulfate was described. The process is driven by microgalvanic effects along the microstructure, generating anodic sites over lead and tin rich phases and cathodic sites onto Cu‐rich phases.
Augusto Versteg, Gustavo Prestes de Vargas, Tiago Falcade   +2 more
wiley   +1 more source

Bauhinia naniflora: a new species of section Amaria (Cercidoideae: Leguminosae) from Colombia

Nordic Journal of Botany, EarlyView.
Bauhinia, the most species‐rich genus of Cercidoideae (Leguminosae), is pantropically distributed and includes four sections in the Americas. During an ongoing taxonomic revision of American Cercidoideae, a new species of Bauhinia sect. Amaria ser. Decandrae currently endemic to Colombia was identified and is here described as Bauhinia naniflorasp nov.
Luis Carlos Casas‐Restrepo, Andrés Fonseca‐Cortés, Rita Fábia da Silva Calixto, Luciano Paganucci de Queiroz, Adilva de Souza Conceição   +4 more
wiley   +1 more source

Aiouea riedeliana comb. nov. (Lauraceae) from Brazil, with an amended description and provisional extinction threat assessment

Nordic Journal of Botany, EarlyView.
Aiouea riedeliana (Kosterm.) P.L.R.Moraes and Brotto is the new combination for Cinnamomum riedelianum Kosterm., whose type‐bringing synonym is Persea riedelii Meisn. The placement of this taxon in Aiouea is presented, justified, and illustrated here, disagreeing with its previous classification in Ocotea, as Ocotea riedeliana (Kosterm.) Kottaim., then
Pedro Luís Rodrigues de Moraes, Lilian Silva Santos, Marcelo Leandro Brotto   +2 more
wiley   +1 more source

Trait‐associated pathway links plant diversity to litterfall phenology in a seasonally dry tropical forest

Oikos, EarlyView.
Phenology plays a central role in regulating energy flow and nutrient cycling, yet remains insufficiently integrated into biodiversity–ecosystem functioning frameworks. This gap is especially relevant in strongly seasonal systems, where community‐wide synchrony in leaf litterfall may arise from either temporal niche differentiation among species or ...
Ana E. Bonato Asato, Otávio Sena, José L. A. Silva, Gabriel H. S. Silva, Mery I. G. de Alencar, Eduardo Arlé, Bruno T. Goto, Anderson da R. Gripp, Jorge G. F. Genovez, Rodrigo L. Martins, Nico Eisenhauer, André Y. S. P. Belo, Adriano S. Mota, Alexandre F. Souza, Adriano Caliman   +14 more
wiley   +1 more source

Influence of Reaction Conditions and Water on the Manufacture of C9 Aromatic Hydrocarbon Resins

Polymer Engineering &Science, EarlyView.
Schematic representation of cationic polymerization process for the statistical analysis performed on material properties, showing the correlation plot of Softening point against Yield. ABSTRACT Aromatic hydrocarbons (HRs) find many commercial applications, demanding control of the cationic reaction conditions to achieve specific resin properties.
Jéssica Bentes, Lys H. R. Mangia, Caio Henrique Pinheiro, José Capistrano Nobre de Abreu, Camila Guindani, José Carlos Pinto   +5 more
wiley   +1 more source

Biosurfactant production by Pseudomonas aeruginosa isolated from mining waste: From genomic analysis to development of a polymeric composite for removal of hexavalent chromium

Polymer International, EarlyView.
Biosurfactant was produced by Pseudomonas aeruginosa using andiroba waste from Amazonia. A biosurfactant–alginate composite (Alg/BioS) was successfully synthesized via ionotropic gelation, and achieved up to 70% Cr6+ removal from water. Abstract Environmental contamination by heavy metals represents a significant challenge due to their persistence in ...
Paulo Diniz Austriaco, Emilly Cruz da Silva, Glenda Sores Gomes, Joane Almeida Alves, Amanda Vidal, Leandro Argolo, Rafaela Ribeiro, Luciana Souza, José Augusto Pires Bitencourt, Leonardo Brasil Felipe, Leonie Asfora Sarubbo, Sidnei Cerqueira dos Santos   +11 more
wiley   +1 more source

Educação em administração. Qual será o futuro das fábricas de administradores?

RAE: Revista de Administração de Empresas, 2003
O ensino de graduação em Administração no Brasil caracterizou-se, desde seu início, pela transferência de tecnologia de gestão, principalmente norte-americana, e posteriormente pela desvinculação das atividades de ensino e pesquisa.
Alexandre Nicolini
doaj  

PERMANÊNCIA ESTUDANTIL E TRAJETÓRIA NO ENSINO SUPERIOR: INTERFACES ENTRE GRADUAÇÃO E PÓS-GRADUAÇÃO

Linguagens, Educação e Sociedade
O artigo propõe reflexões sobre as políticas de ação afirmativa no Ensino Superior, buscando identificar como tais ações em interface com  medidas correlatas, como as Políticas de Permanência Estudantil e Iniciação Científica, produzem condições para que
Dione Rodrigues Pires, Luciana Rodrigues Lessa, Alexandre Brasil Carvalho da Fonseca   +2 more
doaj   +1 more source

Synthesis and application of alginate@CuFe2O4 polymeric spheres in 17‐β‐estradiol adsorption processes in Amazonian rivers

Polymer International, EarlyView.
Magnetic alginate beads, functionalized with copper ferrite, effectively remove 17‐β‐estradiol from Amazonian water, exhibiting optimized 238.65 μg g−1 capacity, fast 40 min kinetics, easy recovery, and successful remediation. Abstract The presence of endocrine‐disrupting compounds, such as 17‐β‐estradiol, in aquatic ecosystems poses a significant ...
Dante S Silva, Adriano R. S Silva, Yasmin S Medeiros, José R Santos Neto, Jamily L dos Santos, Ananias L dos Santos, Roberta L. S Bernardino, Giulian César S Sá, Leandro A Pocrifka, Sidnei C dos Santos, Emilly C Silva   +10 more
wiley   +1 more source

Torre de Marfim – Um panorama sobre a mercantilização do ensino superior nos Estados Unidos

Comunicação & Educação, 2015
Torre de Marfim é um filme que mostra um processo de meio século de desmantelamento das linhas de subsídio público aos estudantes do ensino superior nos Estados Unidos e o paulatino aumento dos financiamentos privados que acabam por transformar os recém ...
Katya Zuquim Braghini
doaj