Results 11 to 20 of about 333,885 (125)

Large-uncertainty intelligent states for angular momentum and angle [PDF]

open access: yes, 2005
The equality in the uncertainty principle for linear momentum and position is obtained for states which also minimize the uncertainty product. However, in the uncertainty relation for angular momentum and angular position both sides of the inequality are
Stephen M Barnett   +8 more
core   +4 more sources

Rotation of electromagnetic fields and the nature of optical angular momentum [PDF]

open access: yes, 2010
The association of spin and orbital angular momenta of light with its polarization and helical phase fronts is now well established. The problems in linking this with electromagnetic theory, as expressed in Maxwell's equations, are rather less well known.
Barnett, Stephen M.
core   +3 more sources

Orbital angular momentum: origins, behavior and applications [PDF]

open access: yes, 2011
As they travel through space, some light beams rotate. Such light beams have angular momentum. There are two particularly important ways in which a light beam can rotate: if every polarization vector rotates, the light has spin; if the phase structure ...
Padgett, M.J.   +5 more
core   +1 more source

Brasil, Argentina e América do Sul

open access: yesEstudos Avançados, 2005
ESTE trabalho discute alguns aspectos da evolução econômica recente do Brasil, da Argentina e de outros países da América do Sul. Tendências econômicas e intelectuais perigosas, tais como a "globalização", o chamado Consenso de Washington, a dolarização ...
Paulo Nogueira Batista Jr.
doaj   +1 more source

A novel continuously variable angular vertical comb-drive with application in scanning micromirror [PDF]

open access: yes, 2013
An angular vertical comb-drive (AVC) with electrically controllable initial comb-offset is presented in the context of a single crystalline silicon scanning micromirror.
Lì, Lì L.   +3 more
core   +3 more sources

Osteologia craniana de Penelope superciliaris Temminck, 1815 (Galliformes: Cracidae)

open access: yesBoletim do Museu Paraense Emílio Goeldi. Ciências Naturais, 2007
Penelope superciliaris é endêmica da região Neotropical, pertencente à subfamília Penelopinae, inserida na família Cracidae. Sua posição taxonômica ainda é controversa em relação às espécies congêneres, bem como entre os gêneros pertencentes a esta ...
Maria Luiza Videira Marceliano   +2 more
doaj   +1 more source

Anatomical study of the positioning of guide wires for the reconstruction of the two bands of the anterior cruciate ligament using transtibial technique Estudo anatômico do posicionamento dos fios-guia para a reconstrução das duas bandas do ligamento cruzado anterior pela técnica transtibial

open access: yesActa Cirúrgica Brasileira, 2012
PURPOSE: To determine whether it is possible and the difficulty of anatomical placement of guide wires for reconstruction of the two bands of the anterior cruciate ligament using transtibial technique and to measure the angle and positioning of the ...
Christiano Saliba Uliana   +5 more
doaj   +1 more source

Adenotonsillectomy in facial growing patients: spontaneous dental effects Adenotonsilectomia em pacientes na fase de crescimento facial: efeitos dentários espontâneos

open access: yesBrazilian Journal of Otorhinolaryngology, 2011
Children with hypertrophic tonsils and adenoids may have adverse effects on dental occlusion, which tend to worsen during the growth period. Diagnosis and early treatment is essential.
Silvia Regina Amorim Pereira   +2 more
doaj   +1 more source

Análise da variação dos valores da rotação medial conforme a posição da diáfise do úmero Analysis on the variation of medial rotation values according to the position of the humeral diaphysis

open access: yesRevista Brasileira de Ortopedia, 2012
OBJETIVO: Analisar a validade da medida de rotação medial (RM) do ombro pelos níveis vertebrais conforme a variação da posição da diáfise do úmero, testando o bigoniômetro como novo instrumental de aferição.
Alberto Naoki Miyazaki   +10 more
doaj   +1 more source

Stratosphere-troposphere exchange: An angular momentum perspective [PDF]

open access: yes, 2007
The exchange of axial angular momentum (AM) between stratosphere and troposphere forms an important part of stratosphere–troposphere exchange (STE). Data are used to quantify the related fluxes through an idealized tropopause for specific flux events ...
Egger, Joseph   +3 more
core   +1 more source

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