نتایج جستجو برای: elementary

تعداد نتایج: 50717  

Journal: :Revista de salud publica 2014
Erico Felden Pereira Clarissa Stefani Teixeira Rubian D Andrade Adair da Silva-Lopes

OBJECTIVES Investigating some pertinent factors associated with elementary education teachers' quality of life working in the Brazilian city of Florianopolis and surrounding district. METHODS 349 state and municipal school system elementary school teachers working in the city and its surrounding areas answered a questionnaire containing work-related questions and the WHO Quality of Life-BREF ...

2000
Y. A. Coutinho J. A. Martins Simões

In this paper we present a left-right symmetric model for elementary particles. The model is based on the group SU(2)L ⊗ SU(2)R ⊗ U(1) with new mirror fermions. A minimal set of Higgs particles is proposed in order to break this symmetry down to U(1)em. The model can accommodate neutrino oscillations and a consistent pattern for charged fermion masses. An important consequence of the model is t...

2013
Kirk T. McDonald Joseph Henry

The recent apparent observation [1, 2] of the Higgs boson [3, 4, 5, 6] has led to much interest in the popular claim that the Higgs boson (or better, the Higgs field) “gives mass” to those elementary particles that have it. Discuss how the de Broglie relations [7] for “matter waves” lead to a wave equation with a term that depends on mass, and that interpretation of this term as due to the inte...

1999
Stuart Bowyer Eric J. Korpela Jerry Edelstein Carmen Morales Juan Pérez-Mercader José F. Gómez

We report on spectral observations of the night sky in the band around 900 Å where the emission line in the Sciama model of radiatively decaying massive neutrinos would be present. The data were obtained with a high resolution, high sensitivity spectrometer flown on the Spanish MINISAT satellite. The observed emission is far less intense than that expected in the Sciama model. Subject headings:...

2011
Arka Banerjee

In the Standard Model, it is generally accepted that elementary particles get their masses via the Higgs mechanism, which involves a phase transition from the symmetric phase at higher temperatures (close to the Big Bang) to a phase in which the symmetry has been spontaneously broken. One of the outstanding problems in particle physics is to explain the origin of the observed matter-antimatter ...

2000
M. L. BHAUMIK

The current status of the studies of the origin of the fundamental particles and the universe is presented. These studies indicate the unified field to be the source of both the fundamental particles and the universe itself. Furthermore, as a consequence of the unique properties of the quantum vacuum, the unified field is presumed to exist, in a quantum physical sense, everywhere in the very fa...

2007
F. Cianfrani

The dimensional reduction of Papapetrou equations is performed in a 5-dimensional Kaluza-Klein background and Dixon-Souriau results for the motion of a charged spinning body are obtained. The splitting provides an electric dipole moment, and, for elementary particles, the induced parity and time-reversal violations are explained.

2013
Rodrigo Huerta-Quintanilla Efrain Canto-Lugo Dolores Viga-de Alva

Complex networks are used to describe interactions in many real world systems, including economic, biological and social systems. An analysis was done of inter-student friendship, enmity and kinship relationships at three elementary schools by building social networks of these relationships and studying their properties. Friendship network measurements were similar between schools and produced ...

2009
P. M. Chesler A. Vuorinen

We study thermal corrections to the dispersion relations of massive fundamental particles immersed in weakly coupled non-Abelian plasmas. The cases covered include quarks in the QCD (quark-gluon) plasma, as well as N = 2 quarks and scalars in an N = 4 Super Yang-Mills plasma. We perform the calculations to leading order in a weak coupling expansion, and consider all mass scales of the fundament...

1999
M L Perl

During the past one hundred years three related elementary particles– the electron, the muon, and the tau–were discovered by very different scientific techniques. The author, who received the Wolf Prize and the Nobel Prize for the discovery of the tau, uses this history to discuss certainty and uncertainty in the practice of science. While the emphasis is on the practice of scientific research,...

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