Geometric Interaction
Mostrando 1-12 de 83 artigos, teses e dissertações.
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1. Synthesis and Molecular Modeling Study of Two Bromo-Dimethoxybenzaldehydes
This work describes the synthesis, molecular structure, and packaging of the compounds 6-bromo-2,3-dimethoxybenzaldehyde (6-BRB) and 5-bromo-2,3-dimethoxybenzaldehyde (5 BRB). Characterization in the solid-state was carried out by X-ray diffraction, and the analysis of the interactions was described by the Hirshfeld surface, which helps in understanding the
Journal of the Brazilian Chemical Society. Publicado em: 2022
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2. Analytical determination of the vibration frequencies and buckling loads of slender reinforced concrete towers
Abstract This study focused on improving the design of slender structures with reinforced concrete (RC) telecommunication towers as the main application. Analytical procedure based on Rayleigh’s method to compute the first natural vibration frequency and the critical buckling load was development. All the nonlinearities present in the system were considere
Lat. Am. j. solids struct.. Publicado em: 27/06/2019
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3. Inelastic second-order analysis of steel columns under minor-axis bending
Abstract The inelastic second-order behavior of steel structural columns under minor-axis bending is presented in this article. To study this behavior, a nonlinear frame element formulation is adopted in which the steel's plasticity process is accompanied at the nodal points of each finite element through the refined plastic-hinge method (RPHM). A tangent mo
REM, Int. Eng. J.. Publicado em: 19/06/2019
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4. DFT Study of the Interaction between the Ni2+ and Zn2+ Metal Cations and the 1,2-Dithiolene Ligands: Electronic, Geometric and Energetic Analysis
Density functional theory (DFT) (B3LYP/6-311++G(d,p)) calculations of the interacting strength 1,2-dithiolene anionic ligands with the [M(OH2)4]2+ and [M(OH2)2]2+ complexes (M = Ni and Zn) were performed. Three series of ligands were studied: compounds with an aromatic ring, with an ethylene moiety and with a heterocyclic ring. The ligands have substituents
J. Braz. Chem. Soc.. Publicado em: 23/05/2019
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5. Justificando Generalizações Geométricas na Formação Inicial de Professores dos Primeiros Anos
Resumo Este artigo enquadra-se numa experiência de formação com futuras professoras e educadoras do 2° ano de uma Licenciatura em Educação Básica, desenvolvida em Portugal, em que estas produziram justificações de generalizações num contexto de ensino exploratório. O estudo tem como objetivo compreender a forma como justificam generalizações so
Bolema. Publicado em: 2019-04
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6. ESTUDIO COMPUTACIONAL DE LA INTERACCIÓN N∙∙∙C EN SISTEMAS MOLECULARES (R)NN-CO2 (N=1,2,3)
The structures and molecular interactions of (R)nN-CO2 complexes of amines and CO2 in the gas phase were computationally studied by using ab-initio methods and quantum theory of atoms in molecules (QTAIM). The analysis of the electrostatic potential showed that the interaction N∙∙∙C present in this type of aggregates is favored by the potential differe
Quím. Nova. Publicado em: 2017-09
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7. Broiler Surface Temperature and Behavioral Response under Two Different Light Sources
Light is an important environmental variable for the regulation and control of broiler behavior. Some light sources may also add heat to the rearing environment, and indirectly affect the heat exchange between the birds and the environment. This study aimed at investigation the surface temperature and behavioral response of broilers reared in an environment
Rev. Bras. Cienc. Avic.. Publicado em: 2015-06
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8. Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load
AbstractThis work presents a numerical model to simulate the failure behavior of slender reinforced concrete columns subjected to eccentric compression loads. Due to the significant influence of the lateral displacements on the loading state provided by an eccentric load, geometric nonlinearity is considered. The responses of the concrete in tension and comp
Lat. Am. j. solids struct.. Publicado em: 2015-03
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9. Obtenção artificial de rainhas e estabelecimento de novas colônias de Tetragona clavipes (Hymenoptera, Apidae, Meliponini) / Artificial obtainment of queens and establishment of new colonies of Tetragona clavipes (Hymenoptera, Apidae, Meliponini)
A criação racional de abelhas sem ferrão, conhecida como meliponicultura, é uma atividade crescente no Brasil e sua demanda abriu o campo para pesquisas que favorecem esse mercado. Além disso, o papel essencial desempenhado por esses insetos na polinização tem chamado atenção para o seu uso sustentável na prática agrícola. Nesses aspectos, alguns
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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10. Measuring bacterial cells size with AFM
Atomic Force Microscopy (AFM) can be used to obtain high-resolution topographical images of bacteria revealing surface details and cell integrity. During scanning however, the interactions between the AFM probe and the membrane results in distortion of the images. Such distortions or artifacts are the result of geometrical effects related to bacterial cell h
Brazilian Journal of Microbiology. Publicado em: 2012-03
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11. A stress-displacement solution for a pressure tunnel with impermeable liner in elastic porous media
Considering the effects of the changes of the pore water pressure around the opening, the construction sequence of the tunnel and the interaction between the liner and the surrounding geomaterial on the mechanical response of the tunnel and in conjunction with the analyses of the continuity and boundary conditions for the stress and displacement and hydrauli
Latin American Journal of Solids and Structures. Publicado em: 2012
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12. Horizontal and vertical positional accuracy assement of cartographic products of the amazon region derived from interferometric sar data in X and P bands from ORBISAR sensor / Avaliação da acurácia posicional planialtimétrica de produtos cartográficos da Região Amazônica extraídos de dados SAR interferométricos nas bandas X e P do sensor ORBISAR
The Geographic Service of the Brazilian Army (DSG) is running a major mapping project in Brazil, called ´´Radiography Amazon", the region known as ´´Empty Mapping the Amazon." This area, approximately 1,8 million km$^2$, has not had, to date, appropriate land information mapping at scales larger than 1:250,000, except insufficient cartographic documents
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 21/11/2011