Results 91 to 100 of about 763,430 (227)

Genomic Analysis of Taurine and Indicine Ancestry in the Montana Tropical Composite Population

open access: yesJournal of Animal Breeding and Genetics, Volume 143, Issue 2, Page 273-282, March 2026.
ABSTRACT The Montana Tropical cattle, a Taurine and Indicine composite, were developed in Brazil since 1994 and were based on crossing four biological types of cattle: zebu (mainly Nelore), tropical adapted taurine (mainly Senepol and Romosinuano), British taurine (mainly Angus) and continental taurine (as Charolais, Simental and Limousin).
Camila Alves dos Santos   +5 more
wiley   +1 more source

Avaliação de um estudo de biomas brasileiros mediante sensoriamento remoto: contribuições à formação de professores de ciências

open access: yesAlexandria, 2009
Este artigo apresenta uma pesquisa realizada junto a uma turma de licenciandos em Ciências Biológicas, no contexto de um estágio docente. Eles vivenciaram uma oficina pedagógica sobre biomas brasileiros, utilizando o sensoriamento remoto como ferramenta,
Juliana Mariani Santos   +2 more
doaj  

A dimensão histórica da ciência presente nas investigações em educação química no brasil (1997-2005) [PDF]

open access: yes, 2009
A investigação refere-se aos diferentes olhares que pesquisadores da área de Química detêm sobre a inserção da abordagem da História da Ciência no processo da Educação Química.
Rogado Rogado, J.
core   +1 more source

A Comparative Study of Melanocytic Tumours: Linking Portuguese Dogs and Cats to Human Cases

open access: yesVeterinary and Comparative Oncology, Volume 24, Issue 1, Page 105-120, March 2026.
ABSTRACT Melanocytic tumours (MT) occur in both humans and companion animals, presenting an opportunity for comparative oncology research. Thus, this study provides a comprehensive epidemiological analysis comparing MT in Portuguese dogs, cats and humans. Data were obtained from the Portuguese National Cancer Registry (RON) (2011–2021) and Vet‐OncoNet (
Catarina Alves Pinto   +5 more
wiley   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

open access: yesAdvanced Functional Materials, Volume 36, Issue 13, 12 February 2026.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva   +9 more
wiley   +1 more source

Educação em ciências e desenvolvimento da competência de acção em educação sexual [PDF]

open access: yes, 2011
Esta investigação tem como objectivo analisar a evolução da competência dos alunos para seleccionar e resolver problemas em educação sexual, dentro de um estudo mais amplo que avaliou o efeito de uma metodologia de ensino orientada para a acção, por ...
Viegas, Ana Fátima Aguiar   +1 more
core  

Engineering a Perfusion Bioreactor System for hiPSC‐Derived Progenitor Co‐Culture Capturing Microglial Features in CNS Development

open access: yesBiotechnology and Bioengineering, Volume 123, Issue 2, Page 363-378, February 2026.
The authors report the development of a controlled and scalable 3D co‐culture system combining hiPSC‐derived erythromyeloid progenitors and neurospheres within the Ambr® 250 Modular platform operated with a newly designed perfusion system. This model faithfully recapitulates early microglia–neural interactions, enabling progenitor integration ...
Catarina M. Gomes   +4 more
wiley   +1 more source

Contributions of Science Education for construction of a positive alterity in relation to indigenous culture [PDF]

open access: yesInvestigações em Ensino de Ciências, 2014
This paper discusses the contributions of science education for building a positive alterity in relation to current Brazilian indigenous groups. Remote sensing and ethnobiology were the pedagogic tools used to achieve this goal.
Cleise Helen Botelho Koeppe   +2 more
doaj  

A retenção académica e performance a ciências em Portugal evidenciadas no PISA 2006 [PDF]

open access: yes, 2013
A questão de retenção académica surgiu como um discurso marcante em política educacional em Portugal. Os dados do PISA 2006 facultam uma oportunidade para examinar essa questão numa grande amostra de alunos de 15 anos de idade.
Conboy, Joseph   +2 more
core  

From Ink to Mockup: An Integrated Study of Historical Gall Ink Formulations and Their Impact on Paper

open access: yesChemPlusChem, Volume 91, Issue 2, February 2026.
Iron gall inks percipitates (right), and mockups upon artificial ageing (left) Iron gall inks (IGIs) played a central role as a writing medium in Western countries, leaving behind a vast legacy and significant conservation challenges. This study presents a twofold methodological approach to investigate the physicochemical behaviour of IGI‐based ...
Margarida Nunes   +9 more
wiley   +1 more source

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