Navegação Ciências Exatas e da Terra por Título

Tabela Periódica : concepções de estudantes ao longo do ensino médio

Vianna, Nycollas Stefanello; Cicuto, Camila Aparecida Tolentino; Pazinato, Maurícius Selvero (2019) [Artigo de periódico]

O objetivo desta pesquisa foi verificar a compreensão dos estudantes em relação ao conteúdo de Tabela Periódica (TP) nas três séries do ensino médio em uma Escola Pública do Rio Grande do Sul (n=135). Para isso, elaborou-se ...

Tailoring coercivity of unbiased exchange-coupled ferromagnet/antiferromagnet bilayers

Sossmeier, K.D.; Schäfer, Deise; Bastos, Arthur Paulo Ozelame; Schmidt, Joao Edgar; Geshev, Julian Penkov (2012) [Artigo de periódico]

This paper reports experimental results obtained on unconventional exchange-coupled ferromagnet/ antiferromagnet (FM/AF) system showing zero net bias. The Curie temperature of the FM (NiCu) is lower than the blocking ...

Tamanho de amostra de caracteres de cultivares de feijão

Cargnelutti Filho, Alberto; Ribeiro, Nerinéia Dalfollo; Storck, Lindolfo; Jost, Evandro; Poersch, Nerison Luiz (2008) [Artigo de periódico]

O objetivo deste trabalho foi estimar o tamanho de amostra necessária para avaliar caracteres de cultivares de feijão (Phaseolus vulgaris L.) e verificar a variabilidade do tamanho de amostra entre cultivares e entre ...

Tamanho de amostra para a estimativa das médias decendiais de radiação solar global no Estado do Rio Grande do Sul

Cargnelutti Filho, Alberto; Matzenauer, Ronaldo; Maluf, Jaime Ricardo Tavares; Silva, Bruna Pires da (2007) [Artigo de periódico]

Com o objetivo de verificar a variabilidade temporal e espacial do tamanho de amostra da radiação solar global média decendial, de 22 locais do Estado do Rio Grande do Sul, utilizaram-se séries de dados de radiação solar ...

Tangram : virtual integration of IP components in a distributed cosimulation environment

Souza, Uilian Rafael Feijo; Sperb, Josué Klafke; Mello, Braulio Adriano de; Wagner, Flavio Rech (2005) [Artigo de periódico]

Tapeworm eggs in a 270 million-year-old shark coprolite

Poinar Júnior, George O.; Figueiredo, Ana Emilia Quezado de; Pacheco, Ana Carolina L.; Horn, Bruno Ludovico Dihl; Schultz, Cesar Leandro (2013) [Artigo de periódico]

Remains of parasites in vertebrates are rare from the Mesozoic and Paleozoic. Once most parasites that live in – or pass through – the gastrointestinal tract of vertebrates, fossil feces (coprolites) or even intestinal ...

Taquari River (Rio Grande do Sul, Brazil) sediment ecotoxicology, using Daphnia magna, 1820, Straus as test organism

Terra, Nara Regina; Feiden, Ilda Rosa; Fachel, Jandyra Maria Guimarães (2008) [Artigo de periódico]

The Taquari River is socio-economically and environmentally important in Rio Grande do Sul State, Brazil. This study evaluates the influence of sediment samples from the river on the survival and reproduction of Daphnia ...

Targeted drug delivery and treatment of endoparasites with biocompatible particles of pH-responsive structure

Mathews, Patrick Delgado; Patta, Ana Carolina Monge Fernandes; Gonçalves, João V.; Gama, Gabriella dos Santos; Garcia, Irene Teresinha Santos; Mertins, Omar (2018) [Artigo de periódico]

Biomaterials conceived for vectorization of bioactives are currently considered for biomedical, biological, and environmental applications. We have produced a pH-sensitive biomaterial composed of natural source alginate ...

A targeted search for binary white dwarf pulsars using Gaia and WISE

Pelisoli, Ingrid Domingos; Kepler, Souza Oliveira; Sahman, David (2025) [Artigo de periódico]

After its discovery in 2016, the white dwarf binary AR Scorpii (AR Sco) remained for several years the only white dwarf system to show pulsed radio emission associated with a fast-spinning white dwarf. The evolutionary ...

Target selection for the Apache Point Observatory Galactic Evolution Experiment (APOGEE)

Zasowski, G.; Johnson, J.A.; Frinchaboy, P.M.; Majewski, Steven Raymond; Nidever, D.L.; Rocha-Pinto, H.J.; Girardi, Leo Alberto; Andrews, Brett H.; Chojnowski, Stephen Drew; Cudworth, Kyle McC.; Jackson, Kelly M.; Munn, Jeffrey, A.; Skrutskie, M.F.; Beaton, Rachael Lynn; Blake, Cullen H.; Covey, Kevin; Deshpande, Rohit; Epstein, Courtney; Fabbian, Damian; Fleming, S.W.; García-Hernández, D. A.; Herrero Davó, Artemio; Mahadevan, Suvrath; Mészáros, S.; Schultheis, Mathias; Sellgren, K.; Terrien, Ryan C.; van Saders, Jennifer L.; Allende Prieto, Carlos; Bizyaev, D.; Burton, Adam; Cunha, Katia; Costa, Luiz N. da; Hasselquist, Sten; Hearty, Frederick R.; Holtzman, J.A.; García Pérez, Ana Elia; Maia, Marcio Antonio Geimba; O'Connell, Robert West; O’Donnell, C.; Pinsonneault, Marc H.; Santiago, Basilio Xavier; Schiavon, Ricardo P.; Shetrone, M.; Smith, Verne V.; Wilson, J.C. (2013) [Artigo de periódico]

The Apache Point Observatory Galactic Evolution Experiment (APOGEE) is a high-resolution infrared spectroscopic survey spanning all Galactic environments (i.e., bulge, disk, and halo), with the principal goal of constraining ...

A tartaruga no espaço tridimensional

Oliveira, Paulo Werlang de; Rambo, Elisabete; Santos, Suzana Lima dos; Gravina, Maria Alice (1992) [Artigo de periódico]

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Taxes, inequality, and equal opportunities

Iglesias, Jose Roberto; Cardoso, Ben-Hur Francisco; Goncalves, Sebastian (2023) [Artigo de periódico]

Extreme inequality represents a grave challenge for impoverished individuals and poses a threat to economic growth and stability. Despite the fulfillment of affirmative action measures aimed at promoting equal opportunities, ...

Tbulk-BICS : a Built-in current sensor robust to process and temperature variations for soft error detection

Henes Neto, Egas; Kastensmidt, Fernanda Gusmão de Lima; Wirth, Gilson Inacio (2008) [Artigo de periódico]

This paper presents a parameterized current sensor able to detect transient ionization in the silicon substrate. Each sensor is controlled by a set of trimming bits that can be used to attune the sensitivity of the sensor ...

Teaching wave-particle complementarity using the Virtual Mach-Zehnder Interferometer

Cavalcanti, Claudio Jose de Holanda; Ostermann, Fernanda; Netto, Jader da Silva; Lima, Nathan Willig (2020) [Artigo de periódico]

We propose the teaching of wave-particle duality mediated by a software called Virtual Mach-Zehnder Interferometer, developed by our research group. We introduce the Dirac’s formalism contextualized on the Mach-Zehnder ...

Technologies for innovative monitoring to reduce blood pressure and change lifestyle using mobile phones in adult and elderly populations (TIM study) : protocol for a randomized controlled trial

Fuchs, Sandra Cristina Pereira Costa; Harzheim, Erno; Iochpe, Cirano; David, Caroline Nespolo de; Gonçalves, Marcelo Rodrigues; Sesin, Guilhermo Prates; Costa, Cássio Morosini; Moreira, Leila Beltrami; Fuchs, Flávio Danni (2018) [Artigo de periódico]

Background: Hypertension is a growing problem worldwide, markedly in low- and middle-income countries, where the rate of control slightly decreased. The overall prevalence of hypertension in Brazil is 28.7% among adult ...

A técnica de difração de elétrons retro-espalhados (EBSD) em microscópio eletrônico de varredura (MEV) e sua aplicação no estudo de rochas deformadas

Morales, Luiz Fernando Grafulha; Hinrichs, Ruth; Fernandes, Luís Alberto D'Ávila (2007) [Artigo de periódico]

The electron backscattered diffraction technique in the scanning electron microscope (EBSD/SEM) is based on the diffraction of a high-energy electron beam by the crystalline structure of a given material, in all possible ...