Results 51 to 60 of about 7,921 (173)

ESTADO DA ARTE DO CONHECIMENTO DE ARACHNIDA

open access: yesEvolução e Conservação da Biodiversidade, 2016
<p>Nos &uacute;ltimos dois s&eacute;culos o avan&ccedil;o do conhecimento da diversidade em Arachnida tem ocorrido numa velocidade grande, principalmente no que diz respeito ao Brasil. Isso ocorreu devido ao aumento consider&aacute;vel no n&uacute;mero de especialistas formados e ativos nos campos da taxonomia, sistem& ...
Ana Lúcia Tourinho, Adriano Kury
openaire   +1 more source

Stability studies of cynaropicrin–major sesquiterpene lactone of Cynara cardunculus leaves

open access: yesPest Management Science, Volume 82, Issue 9, Page 8820-8830, September 2026.
This study investigated its stability under high temperature and pH, mimicking agronomic extremes and under soil context. Bioassays demonstrated that degradation products exhibited higher phytotoxic activity than cynaropicrin and deacylcynaropicrin. This is the first study about cynaropicrin's stability, characterizing degradation products, and their ...
Daniela Rosa   +6 more
wiley   +1 more source

Anastrepha grandis: Distribution, Host Plants, and Management—A Review

open access: yesEntomologia Experimentalis et Applicata, Volume 174, Issue 9, Page 977-988, September 2026.
This graphic summary illustrates the databases and languages used in the bibliographic search for the review of the geographic distribution of Anastrepha grandis (Diptera: Tephritidae) in the Americas and different regions of Brazil, the main host plants of the Cucurbitaceae family, the management strategies used, and the main challenges related to the
Liz Maria Matilde Duarte   +2 more
wiley   +1 more source

Green Synthesis of Silver Nanoparticles Using Root Extract of Gomphrena vaga Mart.: Metabolomic Insights Into Nanoparticle Formation and Antimicrobial Activity

open access: yesNano Select, Volume 7, Issue 8, August 2026.
This study presents the green synthesis of ultrasmall silver nanoparticles using Gomphrena vaga Mart. root extract. The nanoparticles synthesized were stable and showed good broad‐spectrum antibacterial activity against Gram‐positive and Gram‐negative bacteria in initial studies.
Uedson da Silva das Neves   +5 more
wiley   +1 more source

O conhecimento escolar em pesquisas do Ensino de Biologia na Educação de Jovens e Adultos fundamentadas na perspectiva Histórico-Cultural

open access: yesEducação (Santa Maria. Online)
Este estudo apresenta o recorte de uma pesquisa de mestrado e objetiva analisar o papel atribuído aos conhecimentos escolares por investigações do ensino de biologia na Educação de Jovens e Adultos (EJA) que se fundamentam na perspectiva Histórico ...
Lucas Martins de Avelar   +2 more
doaj   +1 more source

Chemical Characterization and In Vivo Safety Assessment of Aqueous Extract From Anacardium occidentale L. (Anacardiaceae) Leaves

open access: yesChemistry &Biodiversity, Volume 23, Issue 7, July 2026.
Anacardium occidentale leaf aqueous extract showed rich polyphenolic composition, including flavonoids, tannins, and phenolic acids. Acute toxicity in mice revealed no mortality or adverse effects, with LD50 >2000 mg/kg and GHS Class 5. Genotoxicity assays were negative, supporting safety and potential phytopharmaceutical development, pending chronic ...
Elinado Francisco de Lima Bento   +11 more
wiley   +1 more source

Comparing the Effects of Chemical Optical Clearing Agents and Mechanical Compression on the Optical Attenuation of Porcine Skin

open access: yesJournal of Biophotonics, Volume 19, Issue 7, July 2026.
Quantitative SD‐OCT analysis reveals that topically applied chemical optical clearing agents, specifically PEG‐400 combined with oleic acid and aqueous tartrazine, significantly reduce the skin optical attenuation coefficient. In contrast, mechanical compression proved ineffective, identifying chemical clearing as a superior strategy for optimizing ...
Camila Ramos Silva   +7 more
wiley   +1 more source

Synergistic efforts in specimen digitisation, curation and cataloguing of Brazil's megadiverse flora and funga

open access: yesPLANTS, PEOPLE, PLANET, Volume 8, Issue 4, Page 1057-1067, July 2026.
The advancement of digital technologies has brought a rapid global information exchange, impacting all areas of our lives. This also applies to science. Knowledge, conservation and scientific innovation on global biodiversity are being strengthened and disseminated at unprecedented scales.
Ana Flávia Alves Versiane   +9 more
wiley   +1 more source

A tática enquanto objeto de estudos em revistas científicas brasileiras sobre Futebol

open access: yesRevista Brasileira de Futsal e Futebol, 2017
O estudo teve como objetivo realizar uma pesquisa do tipo estado do conhecimento em dois periódicos científicos da área de futebol. Para tanto, as fontes selecionadas foram artigos publicados em dois periódicos específicos da área do futebol, "Revista ...
Marcelo Santos Lopes   +1 more
doaj  

A ciência e o novo estado do conhecimento: a contribuição da ciência da informação

open access: yesEncontros Bibli, 2006
Em face do novo estado do conhecimento, marcado basicamente pela sua despersonalização, credibilidade e fragmentação - decorrência do aumento vertiginoso do volume de informação e do conhecimento existente -, a Ciência da Informação, cujo objeto de ...
Raimundo Nonato Macedo dos Santos   +2 more
doaj   +1 more source

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