Browsing Exact and Earth Sciences by Title
Now showing items 5748-5767 of 6559
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Synthesis of new family of thiazoline and thiazole esters and investigation of their thermal properties
(2014) [Journal article]A new family of thiazoline and thiazole esters has been synthesized and their thermal properties are presented and discussed. Thiazoline esters were obtained by cyclization reaction from 4-substituted benzenenitrile and ... -
Synthesis of silica xerogels with high surface area using acetic acid as catalyst
(2007) [Journal article]Nesse trabalho foi estudada a influência do ácido acético na estrutura de poros e na área superficial de sílicas preparadas pelo método sol-gel. Condições experimentais de síntese, tais como temperatura de policondensação ... -
Synthesis of stimuli-sensitive copolymers by RAFT polymerization : potential candidates as drug delivery systems
(2014) [Journal article]Poly(2-(dimethylamino)ethylmethacrylate-b-methymethacrylate) (PDMAEMA-b-PMMA) poly(2- (dimethylamino)ethylmethacrylate-b-vinylcaprolactam-b-(2-(dimethylamino)ethyl methacrylate) (PDMAEMA-b-PVCL-b-PDMAEMA) and poly(vinylc ... -
Synthesis of tacrine-lophine hybrids via one-pot four component reaction and biological evaluation as acetyl- and butyrylcholinesterase inhibitors
(2013) [Journal article]A novel series of tacrine-lophine hybrids was synthesized and tested for their ability to inhibit acetylcholinesterase (AChE) and butyrylcholinesterase (BuChE) with IC50 in the nanomolar concentration scale. The key step ... -
Synthesis of the integrated spectrum of metal-rich globular clusters using the hr diagram and a stellar library
(1995) [Journal article]An average integrated spectrum of the nearlysolar metallicity globular clusters NGC 6528, NGC 6553 and NGC 6440 is synthesized in the range 3500 < λ < 9750Å with a library of stellar spectra and constraints provided by the ... -
Systematic analysis of jellyfish galaxy candidates in Fornax, Antlia, and Hydra from the S-PLUS survey : a self-supervised visual identification aid
(2024) [Journal article]We study 51 jellyfish galaxy candidates in the Fornax, Antlia, and Hydra clusters. These candidates are identified using the JClass scheme based on the visual classification of wide-field, twelve-band optical images obtained ... -
Systematic studies of correlations between different order flow harmonics in Pb-Pb collisions at √sNN = 2.76 TeV
(2018) [Journal article]The correlations between event-by-event fluctuations of anisotropic flow harmonic amplitudes have been measured in Pb-Pb collisions at √ sNN = 2.76 TeV with the ALICE detector at the Large Hadron Collider. The results are ... -
Systematic study of flow vector fluctuations in √sNN = 5.02 TeV Pb-Pb collisions
(2024) [Journal article]Measurements of the pT-dependent flow vector fluctuations in Pb–Pb collisions at √sNN = 5.02 TeV using azimuthal correlations with the ALICE experiment at the Large Hadron Collider are presented. A four-particle correlation ... -
Systems Biology-Based Analysis Indicates Global Transcriptional Impairment in Lead-Treated Human Neural Progenitor Cells
(2017) [Journal article]Lead poisoning effects are wide and include nervous system impairment, peculiarly during development, leading to neural damage. Lead interaction with calcium and zinc-containing metalloproteins broadly affects cellular ... -
Systems chemo-biology analysis of DNA damage response and cell cycle effects induced by coal exposure
(2020) [Journal article]Cell cycle alterations are among the principle hallmarks of cancer. Consequently, the study of cell cycle regulators has emerged as an important topic in cancer research, particularly in relation to environmental exposure. ... -
System-size dependence of the charged-particle pseudorapidity density at √sNN = 5.02 TeV for pp, p–Pb, and Pb–Pb collisions
(2023) [Journal article]We present the first systematic comparison of the charged-particle pseudorapidity densities for three widely different collision systems, pp, p–Pb, and Pb–Pb, at the top energy of the Large Hadron Collider ( √sNN = 5.02 ... -
System-size dependence of the hadronic rescattering effect at energies available at the CERN Large Hadron Collider
(2024) [Journal article]The first measurements of K∗(892)0 resonance production as a function of charged-particle multiplicity in Xe Xe collisions at √sNN = 5.44 TeV and ppcollisions at√s = 5.02 TeV using the ALICE detector are presented. The ... -
Systems of exchange values as tools for multi-agent organizations
(2005) [Journal article]This paper introduces systems of exchange values as tools for the organization of multi-agent systems. Systems of exchange values are defined on the basis of the theory of social exchanges, developed by Piaget and Homans. ... -
Tabela Periódica : concepções de estudantes ao longo do ensino médio
(2019) [Journal article]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
(2012) [Journal article]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
(2008) [Journal article]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
(2007) [Journal article]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
(2005) [Journal article] -
Tapeworm eggs in a 270 million-year-old shark coprolite
(2013) [Journal article]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
(2008) [Journal article]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 ...
