Results 51 to 60 of about 1,815 (126)

Aplicações trigonométricas em triângulos quaisquer [PDF]

open access: yes, 2012
O presente trabalho é uma reflexão sobre a importância dos triângulos na vida humana, desde os tempos passados, começando pela civilização egípcia, onde a Matemática era essencialmente prática e os triângulos deviam cumprir seu papel nesse contexto ...
Reis, Djavan Lucena
core   +1 more source

Tuning catalytic activity and sensitivity in urease‐based thin film biosensors using conjugated polymers and eugenol/biseugenol

open access: yesPolymer International, Volume 75, Issue 7, Page 609-617, July 2026.
Hybrid thin films of conjugated polymers and urease modified with eugenol derivatives show that polymer–biomolecule interactions enhance catalytic activity while distinctly modulating electrolyte–insulator–semiconductor sensor sensitivity. Abstract Thin films have emerged as promising platforms for biosensor development due to their versatility and ...
Thaísa da Silva de Souza   +7 more
wiley   +1 more source

Trophic Redundancy and the Hidden Dietary Overlap Between Native and Invasive Stream Fishes

open access: yesEcology of Freshwater Fish, Volume 35, Issue 3, July 2026.
ABSTRACT Biological invasions introduce non‐native species into natural ecosystems, often reshaping localcommunities and altering trophic interactions. In freshwater environments, such invasions can intensify resource use and threaten native fish diversity.
Ronielson Gaia   +6 more
wiley   +1 more source

Sobre a área de polígonos convexos

open access: yesCQD Revista Eletrônica Paulista de Matemática, 2017
Calcula-se a área de um polígono convexo de l-ados. Mostra-se a expressão que fornece a área de um quadrilátero convexo, devida a Bretschneider, a qual generaliza a clássica fórmula de ´Brahmagupta, para quadriláteros cíclicos, bem como recupera-se a ...
Gabriela Vicentini de Oliveira   +1 more
doaj  

Histovariability and fossil diagenesis of Pissarrachampsa (Pseudosuchia, Notosuchia, Baurusuchidae) from the Upper Cretaceous of Southeast Brazil

open access: yesThe Anatomical Record, Volume 309, Issue 6, Page 1451-1463, June 2026.
Abstract Notosuchians were key components of western Gondwanan Cretaceous ecosystems in terrestrial predator niches and exhibited remarkable taxonomic and ecological diversity. Previous research has explored their physiology, metabolism, and histology, revealing varied growth patterns and life history strategies.
Tito Aureliano   +5 more
wiley   +1 more source

La plataforma Nearpod para la comprensión de los triángulos en estudiantes de Educación Básica

open access: yesCiencia y Educación
Entender los triángulos ha sido un reto constante para los estudiantes de séptimo año de Educación Básica, sobre todo en zonas rurales, donde aún se utilizan métodos de enseñanza tradicionales y poco dinámicos.
William Rodrigo Calderón Cartuche   +1 more
doaj   +1 more source

Triângulos congruentes

open access: yes, 2012
Apresenta um problema de geometria plana envolvendo triângulos congruentes e um quadrilátero. Permite ao usuário mover diferentes pontos da figuraConhecimento de geometria planaEducação Superior::Ciências Humanas::EducaçãoEnsino Médio ...
MDMat
core   +2 more sources

Triângulos quaisquer [PDF]

open access: yes, 2014
O seguinte trabalho apresenta um estudo de como aplicar os conceitos da trigonometria e do logaritmo para a resolução de problemas envolvendo triângulos quaisquer.
Marinho, Toni Cesar
core  

What is the best approach to blood transfusion in sickle cell disease? A scientometric analysis and literature review

open access: yesTransfusion Medicine, Volume 36, Issue 3, Page 211-221, June 2026.
Abstract Background Blood transfusion remains a cornerstone in the management of sickle cell disease (SCD); however, it is frequently complicated by red cell alloimmunisation. A significant debate persists within the scientific community regarding the optimal strategy to mitigate this risk: the traditional, pragmatic approach of serologic phenotyping ...
Christiane Ruffato Carminati   +6 more
wiley   +1 more source

Triângulos retângulos

open access: yes, 2016
Apresenta um problema de geometria plana envolvendo dois triângulos retângulos. Deve-se encontrar quais relações podem ser estabelecidas entre seus lados.
MDMat
core   +2 more sources

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