Symmetry Studies
Mostrando 1-12 de 188 artigos, teses e dissertações.
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1. Similarity as an extension of symmetry and its application to superrationality
Abstract In this paper we present a concept of similarity in games, on which to ground alternative solution concepts, some of which differ from the classical notions in the field. In order to do this we impose a constraint on players’ beliefs that amounts to a variant of the well-known symmetry principle in classical bargaining theory. We show how this sim
Manuscrito. Publicado em: 2021-06
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2. TITANYL SULPHATE, AN INORGANIC POLYMER: STRUCTURAL STUDIES AND VIBRATIONAL ASSIGNMENT
In this work, anhydrous titanyl sulfate (TiOSO4) was synthesized and characterized by elemental analyses and vibrational spectroscopy by the first time. In order to verify the stability of the crystallographic structure reported in the literature, an optimization calculation of the unit cell geometry was done with the CRYSTAL17 software, and the agreement wi
Quím. Nova. Publicado em: 05/12/2019
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3. Influence of working pressure and spray nozzle on the distribution of spray liquid in manual backpack sprayers
RESUMO O uso de pulverizadores costais manuais no Brasil é amplamente disseminado em propriedades rurais. Entretanto, são escassos os trabalhos de pesquisa que avaliem as suas características de trabalho, sobretudo modelos de ponta de pulverização e condições de pressão de trabalho. Desta forma, o objetivo deste trabalho foi avaliar quanto os modelos
Arq. Inst. Biol.. Publicado em: 02/12/2019
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4. COMPARAÇÃO DAS CARACTERÍSTICAS DA BRAÇADA NO NADO CRAWL EM PISCINA E EM BANCO SIMULADOR DE NADO
RESUMO O banco de nado tem sido utilizado como treinamento complementar na natação, todavia, não há estudos que analisem tridimensionalmente a especificidade do movimento aplicado por este simulador terrestre de nado. O objetivo do estudo foi comparar as características da braçada no nado crawl e em banco de nado, assim como a simetria de movimento. De
J. Phys. Educ.. Publicado em: 29/04/2019
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5. Pollen morphology and viability in Bromeliaceae
ABSTRACT Pollen morphology characterization is important in taxonomy, conservation and plant breeding, and pollen viability studies can support breeding programs. This study investigated pollen morphology and male fertility in 18 species of Bromeliaceae with ornamental potential. For morphological characterization, pollen grains were acetolyzed and character
An. Acad. Bras. Ciênc.. Publicado em: 07/12/2017
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6. Quasi-Static Crushing and Energy Absorption Characteristics of Thin-Walled Cylinders with Geometric Discontinuities of Various Aspect Ratios
Abstract In this paper, energy absorption and deformation capacity of circular thin-walled members with elliptical cut-outs are investigated both numerically and experimentally. Thin-walled members possess the uniform height, thickness, average cross sectional area, material and volume are subjected to axial quasi-static loading. To conduct such tests, speci
Lat. Am. j. solids struct.. Publicado em: 2017-09
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7. EPR and Optical Absorption Studies of Cu2+ in Boro-Arsenate Glasses
Electron paramagnetic resonance (EPR) and optical absorption studies of xMgO- (25-x) Li2O-50B2O3-25As2O3 glasses were made by introducing Cu2+ as a spin probe. The EPR spectra of all the glass samples recorded at X-band frequencies have similar spectral features. The Cu2+ ions are in well-defined axial sites, but subjected to small distortion leading to the
Mat. Res.. Publicado em: 01/12/2016
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8. Impedance and Modulus Spectroscopy Characterization of Tb modified Bi0.8A0.1Pb0.1Fe0.9Ti0.1O3 Ceramics
In this paper we present the impedance spectroscopy of ternary solid solutions of BiFeO3, TbFeO3 and PbTiO3, prepared by solid-state reaction method. The preliminary structural studies were carried out by x-ray diffraction technique, showing the formation of polycrystalline sample with ABO3 type of perovskite structure with hexagonal symmetry for Bi0.8Tb0.1P
Mat. Res.. Publicado em: 16/02/2016
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9. Symmetry symptoms in obsessive-compulsive disorder: clinical and genetic correlates
Objective: In obsessive-compulsive disorder (OCD), symmetry-related symptoms may be important. Although clinical correlates of symmetry-related symptoms have been identified in OCD, few data exist on genetic associations. Animal studies indicate involvement of dopamine in symmetry-related behavior, suggesting this may be relevant to analogous symptoms in OC
Rev. Bras. Psiquiatr.. Publicado em: 18/08/2015
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10. Evaluation of Q angle in differents static postures
OBJECTIVE: To compare the value of Q angle in different positions, in the external and internal rotations of lower limbs. METHODS: This is a descriptive cross-sectional study. We have evaluated 62 volunteers, 32 women and 30 men in the following positions: supine positions with parallel feet, supine with abduction (external rotation of lower limbs), an
Acta ortop. bras.. Publicado em: 2014-12
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11. Alexithymia, suicidal ideation, and serum lipid levels among drug-naïve outpatients with obsessive-compulsive disorder
Objective: As obsessive-compulsive disorder (OCD) is a relatively common psychiatric disorder with a significant suicide risk, the individuation of potential biomarkers of suicidality, such as cholesterol levels, may enable recognition of at-risk subjects. Therefore, the aims of this study were to: 1) evaluate potential differences in clinical and laborator
Rev. Bras. Psiquiatr.. Publicado em: 17/01/2014
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12. Obsessive-compulsive symptoms and obsessive-compulsive disorder in adolescents: a population-based study
Objectives: To estimate the prevalence of obsessive-compulsive symptoms (OCS) and disorder (OCD) among adolescents and to describe OCD characteristics according to gender. Methods: Participants were selected by cluster sampling at seven high-schools in southern Brazil. In the first stage, 2,323 students were screened for OCS; in the second stage, adolesce
Rev. Bras. Psiquiatr.. Publicado em: 18/10/2013