Browsing Exact and Earth Sciences by Title
Now showing items 1084-1103 of 6034
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A crise de recursos hídricos
(1999) [Journal article] -
Cristais líquidos ferroelétricos CLF : uma abordagem sintética
(2001) [Journal article]Synthetic methods used for the synthesis of the Ferroelectric Liquid Crystals (FLCs) will be considered with emphasis on the chiral synthesis methodologies and mesomorphic electrooptical properties. -
Critical and gaussian conductivity fluctuations in yba2cu3o7-delta
(1993) [Journal article]We report on systematic conductivity fluctuation measurements on three different samp1es of YBa2Cu30 7 - δ • We show, using the temperature derivative of the resistivity and the logarithmic derivative ofthe conductivity ... -
Critical behavior of self-assembled rigid rods on two-dimensional lattices : Bethe-Peierls approximation and Monte Carlo simulations
(2013) [Journal article]The critical behavior of adsorbed monomers that reversibly polymerize into linear chains with restricted orientations relative to the substrate has been studied. In the model considered here, which is known as self-assembled ... -
A critical evaluation of coastal erosion in Rio Grande do Sul, Southern Brazil
(2004) [Journal article]Evidências de erosão costeira no Rio Grande do Sul têm sido obtidas através de três métodos: (a) análises estratigráficas e morfodinâmicas de longo período de barreiras costeiras, (b) mapeamento anual da linha de costa ... -
Critical exponents of the disorder-driven superfluid-insulator transition in one-dimensional Bose-Einstein condensates
(2011) [Journal article]We investigate the nature of the superfluid-insulator quantum phase transition driven by disorder for noninteracting ultracold atoms on one-dimensional lattices. We consider two different cases: Anderson-type disorder, ... -
Criticality in confined ionic fluids
(2001) [Journal article]A theory of a confined two-dimensional electrolyte is presented. The positive and negative ions, interacting by a 1/r potential, are constrained to move on an interface separating two solvents with dielectric constants e1 ... -
CRL4-Cereblon complex in Thalidomide Embryopathy : a translational investigation
(2020) [Journal article]The Cereblon-CRL4 complex has been studied predominantly with regards to thalidomide treatment of multiple myeloma. Nevertheless, the role of Cereblon-CRL4 in Thalidomide Embryopathy (TE) is still not understood. Not all ... -
Cross-cultural adaptation and psychometric testing of the brazilian version of the Self-Care of Heart Failure Index version 6.2
(2013) [Journal article]Objective. To adapt and evaluate the psychometric properties of the Brazilian version of the SCHFI v 6.2. Methods.With the approval of the original author, we conducted a complete cross-cultural adaptation of the instrument ... -
Crossing fields in thin films of isotropic superconductors
(2016) [Journal article]We study interactions of perpendicular and longitudinal magnetic fields in niobium films of different thickness in a wide range of temperatures below the superconducting transition temperature (TC). In 100-nm Nb film at ... -
Crossover exponents for the potts model with quadratic symmetry breaking
(1984) [Journal article]The effect of quadratic symmetry breaking (QSB) on two representations for the Potts vectors in a continuum-field model are studied to two-loop order in renormalized perturbation theory in d=6-E dimensions, in extension ... -
Crowd analysis using computer vision techniques
(2010) [Journal article] -
A cryptography core tolerant to DFA fault attacks
(2007) [Journal article]This work describes a hardware approach for the concurrent fault detection and error correction in a cryptographic core. It has been shown in the literature that transient faults injected in a cryptographic core can lead ... -
Crystal chemistry and structure of the orthorhombic (Fe, Mn)(Ta, Nb)/sub 2/O/sub 6/ family of compounds
(2001) [Journal article]In this paper we review the crystal chemistry and structure data from the literature and our results reported in the last decade for natural and synthetic samples of the tantalite-columbite series. Orderdisorder transitions ... -
Crystal structure and absolute configuration of (3aR,30aR,7aS,70aS)-2,2,20,20-tetramethyl- 3a,6,7,7a,30a,60,70,70a-octahydro-4,40-bi[1,3- benzodioxolyl], obtained from a Pd-catalyzed homocoupling reaction
(2017) [Journal article]The absolute configuration, i.e. (3aR,30aR,7aS,70aS), of the title compound, C18H26O4, synthesized via a palladium-catalyzed homocoupling reaction, was determined on the basis of the synthetic pathway and was confirmed by ... -
Crystal structure of 4-methyl-N-{(E)- methyl[(3aR,8aS)-2-oxo-3,3a,8,8a-tetrahydro- 2H-indeno[1,2-d][1,3]oxazol-3- yl]-λ4-sulfanylidene}benzenesulfonamide
(2015) [Journal article]The formulation that the title compound, C18H18N2O4S2, adopts is a zwitterionic core with the charge separated to the sulfilimine S and N atoms and is supported by the two different S—N bond distances about the sulfinimine ... -
Crystal structure of (4R,5S)-4-methyl-3-methylsulfinyl-5-phenyl-1,3-oxazolidin-2-one
(2014) [Journal article]The absolute structure of the chiral asymmetric indole precursor title compound, C11H13NO3S, was confirmed by refinement of the Flack and Hooft parameters and is that expected based on the starting materials for the ... -
Crystal structure of 5-O-benzoyl-2,3-O-isopropylidene- D-ribono-1,4-lactone
(2017) [Journal article]In the title compound, C15H16O6, obtained from the acylation reaction between 2,3-O-isopropylidene-d-ribono-1,4-lactone and benzoyl chloride, the known absolute configuration for the lactone moiety of the ester substituent ... -
Cu gettering in ion implanted and annealed silicon in regions before and beyond the mean projected ion range
(2003) [Journal article]The strong gettering of Cu atoms in single-crystal Si implanted with 3.5 MeV P+ ions is studied after thermal treatment and Cu contamination. Cu decorates the remaining implantation damage. Three separate Cu gettering ... -
Cultivo de comunidades de prática na formação continuada de professores em Educação em Ciências : uma proposta
(2022) [Journal article]A literatura em Educação em Ciências aponta o potencial das Comunidades de Prática (CoP) em fomentar espaços que articulem Escola e Universidade na Formação Continuada de Professores. Entretanto, as indicações existentes ...