Results 51 to 60 of about 117,970 (213)

Naiavirus: an enveloped giant virus with a pleomorphic, flexible tail

Nature Communications
Numerous studies have shown that viruses are present in a variety of environments on Earth, acting as drivers of biogeochemical cycles and powerful selective forces.
Matheus Rodrigues, Victória Queiroz, Thalita Arantes, Henrique Limborço, Bruna Neiva, Nidia Arias, Talita Machado, Matheus Barcelos, Juliana R. Cortines, Otavio Henrique Thiemann, Rafael Elias Marques, Talita Diniz Melo-Hanchuk, Eliana Leonor Hurtado Celis, João Pessoa Araujo Jr, Erik Reis, Luiz Carlos Junior Alcantara, Cezar Batista Cunha Santos, Abdeali Jivaji, Rodrigo A. L. Rodrigues, Frank O. Aylward, Jônatas Santos Abrahão   +20 more
doaj   +1 more source

Estudo da afinidade da melanina pelo ion Fe(III) [PDF]

, 2009
TCC (graduação) - Universidade Federal de Santa Catarina, Centro de Ciências Físicas e Matemáticas, Curso de Química.Melanina é um pigmento escuro formado pela oligomerização de moléculas, com grupos majoritários catecol e quinone-imina, provenientes da ...
Costa, Thiago Guimarães
core  

Kisspeptin Restores Placental mTOR Signaling and Improves Glucose Homeostasis Mediators Disrupted by Maternal Hypothyroidism in Rats

Acta Physiologica, Volume 242, Issue 4, April 2026.
ABSTRACT Aim Reduced placental mTOR signaling is associated with intrauterine growth restriction and impaired maternal and placental metabolism. Since maternal hypothyroidism induces intrauterine growth restriction, and maternal treatment with kisspeptin‐10 (Kp10) has been shown to improve feto‐placental development in hypothyroid rats, this study ...
Bianca Reis Santos, Jeane Martinha dos Anjos Cordeiro, Luciano Cardoso Santos, Cleisla Souza Oliveira, Maria Clara Pascoal Santos Alvarez, Natália Panhoca Rodrigues, Jorge Lopez‐Tello, Amanda N. Sferruzzi‐Perri, Rogéria Serakides, Juneo Freitas Silva   +9 more
wiley   +1 more source

Juruaça virus taxonomy, tolerance and resistance to infection, and inflammatory response modulation in murine model

npj Viruses
Juruaça virus (JUAV), previously unclassified, was isolated from bats and administered to neonatal and adult BALB/c mice to investigate acute and chronic disease progression.
Tatyane da Silva Cabral, Natalie Chaves Cayuela, Karina Glazianne Barbosa Carvalho, Tamirys Simão Pimenta, Ana Paula Drummond Rodrigues, Daniel Guerreiro Diniz, Juarez Antônio Simões Quaresma, Daniele Barbosa de Almeida Medeiros, Ivy Tsuya Essashika Prazeres, Sandro Patroca da Silva, Taís Pinheiro Araújo, Pedro Fernando da Costa Vasconcelos, Cristovam Wanderley Picanço Diniz, José Antonio Picanço Diniz   +13 more
doaj   +1 more source

Ornamentaçao do tipo padrao-croton em graos de pólen de scrophulariaceae do Brasil [PDF]

, 2000
Ornamentaçáo do tipo padrdo-Croton emn grdos de pólen de Scrophulariaceae do Brasil. Foram estudados, sob microscopia óptica e eletrónica de varredura, graos de pólen acetolisados de algumas espécies brasileira dos géneros Agalinis, Esterhazya, Melasma e
Ribeiro dos Santos, Francisco de Assis, Sant' Anna Melhem, Therezinha   +1 more
core   +2 more sources

Latitudinal Clines in Gene Flow and Demographic Stability Reveal Drivers of Microendemism in a Radiation of Alpine Grasshoppers

Molecular Ecology, Volume 35, Issue 7, April 2026.
ABSTRACT Understanding the geological, ecological, and microevolutionary processes that shape range size in alpine organisms is key to explaining the high rates of local endemism that characterise mountain ecosystems. Here, we investigate the geography of speciation in Oropodisma, a radiation of alpine grasshoppers from the Balkan Peninsula that ...
Joaquín Ortego, Marina Trillo, Jorge Gutiérrez‐Rodríguez, Vicente García‐Navas   +3 more
wiley   +1 more source

Kisspeptin treatment reverses high prolactin levels and improves gonadal function in hypothyroid male rats

Scientific Reports, 2023
We evaluated whether the administration of kisspeptin-10 (Kp10) is capable of restoring gonadal function in hypothyroid male rats. Hypothyroidism was induced with 6-propyl-2-thiouracil (PTU) for three months.
Luciano Cardoso Santos, Jeane Martinha dos Anjos Cordeiro, Larissa da Silva Santana, Erikles Macêdo Barbosa, Bianca Reis Santos, Letícia Dias Mendonça, Maria Clara da Silva Galrão Cunha, William Morais Machado, Larissa Rodrigues Santana, Maíra Guimarães Kersul, Patrícia Costa Henriques, Roberta Araújo Lopes, Paola Pereira das Neves Snoeck, Raphael Escorsim Szawka, Juneo Freitas Silva   +14 more
doaj   +1 more source

Contributions of in situ microscopy to the current understanding of stone biodeterioration [PDF]

, 2010
In situ microscopy consists of simultaneously applying several microscopy techniques without separating the biological component from its habitat.
Asunción de los Ríos, Carmen Ascaso
core   +1 more source

Cryogenic Focused Ion Beam Milling to Investigate the Anisotropic Magnetotransport Properties of Bismuth Microcrystals

Advanced Functional Materials, Volume 36, Issue 20, 9 March 2026.
The highly anisotropic Fermi surface of bismuth results in variations in magnetotransport properties across different crystallographic directions, which can be characterized by studying microcrystals. To avoid the observed surface melting under room temperature Focused Ion Beam (FIB) irradiation, two low‐temperature FIB fabrication methods are proposed
Amaia Sáenz‐Hernández, Soraya Sangiao, Claudia Felser, Chandra Shekhar, José Ángel Pardo, Alfonso Ibarra, José María De Teresa   +6 more
wiley   +1 more source

MEB del efecto de cargas de CaCO3 y caolín cubanos en gomas elaboradas con cauchos naturales

Revista CENIC Ciencias Químicas, 2001
Como un primer paso en la optimización del efecto de adición de cargas minerales cubanas a formulaciones normales de goma se estudiaron muestras resultantes de la incorporación de 35 partes de carbonato de calcio o caolín gris sin activar por cada 100 ...
Carlos Lariot, Orlando Reinosa, Regina C. Reis-Nunes, Randolfo Villegas, Fredys Morales   +4 more
doaj