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- Mauricio Hernández-Ávila, Isabelle Romieu, Sandra Parra, J. Luis Hernandez-Avila, Herlinda Madrigal, Wc Willett
- Salud publica de Mexico
- 1998

OBJECTIVE
To assess the reproducibility and validity of a 116 item semi-quantitative food frequency questionnaire (FFQ), designed to assess the relation between dietary intake and chronic diseases.… (More)

- Juan Carlos Olivares-Galvan, E. Campero-Littlewood, J. Luis Hernandez-Avila, Rafael Escarela-Perez, Su-heyla Adame, A. D. Theocharis
- 2012 VI Andean Region International Conference
- 2012

This paper provides a numerical methodology to quantify the losses produced by induced currents in the metallic ducts (throats) used to enclose the bus bars connecting distribution transformers to… (More)

Measured and calculated SF-6 collision and swarm ion transport data in SF6 -Ar and SF6 -Xe mixtures.

- Malika Benhenni, J. de Urquijo, +4 authors O. Eichwald
- Physical review. E, Statistical, nonlinear, and…
- 2005

The measurement of the mobility of SF-6 in the mixtures SF6 -Ar and SF6 -Xe is reported over the density-reduced electric field strength E/N 1-180 Td (1 Townsend = 10(-17) V cm(2)), from a… (More)

- Rafael Escarela-Perez, E. Campero-Littlewood, Ricardo Aguilar-López, J. Luis Hernandez-Avila, Carlos Avilés-Cruz
- 2006 3rd International Conference on Electrical…
- 2006

In this paper different finite-element (FE) techniques are effectively combined to obtain the standstill frequency response of synchronous machines. As a result, actual risky and high cost tests can… (More)

- Mohammed Yousfi, J. de Urquijo, Antonio Juárez, Enrique Basurto, J. Luis Hernandez-Avila
- IEEE Transactions on Plasma Science
- 2009

The electron swarm coefficients (i.e., drift velocity, longitudinal diffusion coefficient, and effective ionization coefficient) have been measured using a time-resolved pulsed Townsend technique in… (More)

- Rafael Escarela-Perez, T. Niewierowicz, E. Campero-Littlewood, J. Luis Hernandez-Avila
- 2007 4th International Conference on Electrical…
- 2007

Optimization is employed in this work to obtain the two-axis parameters of a typical solid-rotor synchronous machine. SSFR data is used to set-up the identification problem, leading to a fitness… (More)

- Ivan A. Hernandez-Robles, Juan Carlos Olivares-Galvan, Irvin López-García, J. Luis Hernandez-Avila, Rafael Escarela-Perez, Salvador Magdaleno-Adame
- 2016 IEEE PES Transmission & Distribution…
- 2016

This paper presents an experimental and numerical analysis regarding shorted electrical steel laminations of core of a small transformer core (120 VA single-phase shell-type transformer).… (More)

- V. M. Jimenez-Mondragon, Juan Carlos Olivares-Galvan, E. Campero-Littlewood, J. Luis Hernandez-Avila, Rafael Escarela-Perez, Salvador Magdaleno-Adame
- 2012 VI Andean Region International Conference
- 2012

This article analyses and presents an economic evaluation of the impact in load losses of anti-theft metal ducts (throats) in the low-voltage side of pole-mounted single phase distribution… (More)

- A M Juárez, Enrique Basurto, J. Luis Hernandez-Avila, J. de Urquijo
- 2008 17th International Conference on Gas…
- 2008

This paper reports the measurement of the electron drift velocity, the longitudinal diffusion coefficient, the ratio between the longitudinal diffusion coefficient and the electron mobility, and the… (More)

- Olivera Sasic, Jovan M Jovanovic, +4 authors Enrique Basurto
- Physical review. E, Statistical, nonlinear, and…
- 2005

Measurements of electron drift velocities were performed in pure Xe and He and in a number of mixtures ranging up to 70% of Xe. The data were obtained by using a pulsed Townsend technique over the… (More)