Navegação Ciências Exatas e da Terra por Título
Resultados 2811-2830 de 6034
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Labeling the oily core of nanocapsules and lipid-core nanocapsules with a triglyceride conjugated to a fluorescent dye as a strategy to particle tracking in biological studies
(2014) [Artigo de periódico]The synthesis of novel fluorescent materials represents a very important step to obtain labeled nanoformulations in order to evaluate their biological behavior. The strategy of conjugating a fluorescent dye with triacylglycerol ... -
Laboratório de empreendedorismo na UFRGS : despertando o interesse dos alunos pela cultura empreendedora
(2017) [Artigo de periódico] -
Laboratório de ótica : um curso de caráter formativo
(1989) [Artigo de periódico]É descrito um modelo de um curso de laboratório de Física básica de caráter formativo, cujos temas centrais são a dinâmica do procedimento experimental, a interação experiência-teoria, a estrutura lógica e conceitual do ... -
La ciencia como actividad de resolución de problemas : la epistemologia de Larry Laudan y algunos aportes para las investigaciones educativas en ciencias
(2002) [Artigo de periódico]En este trabajo se analizan las concepciones epistemológicas de Larry Laudan referidas al desarrollo del conocimiento científico a fin de aportar nuevas cuestiones referidas a las nociones de racionalidad y progreso ... -
La dimension territoriale du développement durable
(2018) [Artigo de periódico]Travailler le thème du développement durable est un défi obligatoire pour tous les secteurs de la société, à cause de l'aggravation des problèmes environnementaux et sociaux et de leurs conséquences. L'article analyse les ... -
La enseñanza de conceptos fundamentales de mecánica cuántica a alumnos de graduación en Física
(2014) [Artigo de periódico]En este trabajo hemos estudiado la adquisición y retención de conocimiento explícito y las operaciones de pensamiento implícitas en Mecánica Cuántica que han sido hechas por cinco estudiantes de graduación en Física ... -
La formulación de preguntas en el aula de clase : una evidencia de aprendizaje significativo crítico
(2014) [Artigo de periódico]En este trabajo se muestran los principales resultados de un estudio que tuvo como propósito valorar la implementación de una propuesta didáctica constituida por diferentes actividades de modelación computacional haciendo ... -
Land use changes after the period commodities rising price in the Rio Grande do Sul State, Brazil
(2017) [Artigo de periódico]At the end of the 20th and early 21st century, agricultural systems incorporated definitively a new mission: to generate goods for a world population that continues to grow and whose way of life demand food with low ... -
Langevin dynamics of fluctuation-induced first-order phase transitions : self-consistent Hartree approximation
(2007) [Artigo de periódico]The Langevin dynamics of a system with a scalar-order parameter exhibiting a fluctuation-induced firstorder phase transition is solved within the self-consistent Hartree approximation. Competition between interactions on ... -
Langevin simulations of model for ultrathin magnetic films
(2007) [Artigo de periódico]We show results from simulations of the Langevin dynamics of a two-dimensional scalar model with competing interactions for ultrathin magnetic films. We find a phase transition from a high temperature disordered phase to ... -
Langevin simulations of stripe forming systems with long-range isotropic competing interactions
(2016) [Artigo de periódico]We address the critical properties of the isotropic-nematic phase transition in stripe forming systems. We focus on isotropic models in which a short range attractive interaction competes with a long range repulsive ... -
La nueva economía metropolitana y sus impactos urbanos y regionales
(2020) [Artigo de periódico] -
Laparoscopy versus laparotomy for benign ovarian tumour
(2009) [Artigo de periódico]Background: Over the last 10 years laparoscopy and minilaparotomy have become increasingly common approaches for the surgical removal of benign ovarian tumours. However, in the event that a tumour is found to be malignant, ... -
Laparoscopy versus laparotomy for benign ovarian tumours (Review)
(2005) [Artigo de periódico]Background: Over the last ten years laparoscopy and minilaparotomy have become increasingly common approaches for the surgical removal of benign ovarian tumours. However in the event that a tumour is found to be malignant, ... -
Large amplitude oscillations in a trapped dissipative electron gas
(2018) [Artigo de periódico]A collisional trapped non-neutral plasma is described by a hydrodynamical model in onedimensional geometry. For suitable initial conditions and velocity fields, the Lagrangian variables method reduces the pressure dominated ... -
Large deviations for equilibrium measures and selection of subaction
(2018) [Artigo de periódico]Given a Lipschitz function f : {1, . . . , d}N → R, for eachβ > 0 we denote by μβ the equilibrium measure of β f and by hβ the main eigenfunction of the Ruelle Operator Lβ f . Assuming that {μβ}β>0 satisfy a large deviation ... -
Large Deviations for the SSEP with slow boundary: the non-critical case
(2023) [Artigo de periódico]We prove a large deviations principle for the empirical measure of the one dimensional symmetric simple exclusion process in contact with reservoirs. The dynamics of the reservoirs is slowed down with respect to the dynamics ... -
Large-deviation theory for dilutedWishart random matrices
(2018) [Artigo de periódico]Wishart random matrices with a sparse or diluted structure are ubiquitous in the processing of large datasets, with applications in physics, biology, and economy. In this work, we develop a theory for the eigenvalue ... -
Large resistivity change and phase transition in the antiferromagnetic semiconductors LiMnAs and LaOMnAs
(2013) [Artigo de periódico]Antiferromagnetic semiconductors are new alternative materials for spintronic applications and spin valves. In this work, we report a detailed investigation of two antiferromagnetic semiconductors AMnAs (A = Li, LaO), which ... -
Large scale evaluation of differences between network-based and pairwise sequence-alignment-based methods of dendrogram reconstruction
(2019) [Artigo de periódico]Dendrograms are a way to represent relationships between organisms. Nowadays, these are inferred based on the comparison of genes or protein sequences by taking into account their differences and similarities. The genetic ...