47 Result(s)

Article

Linear codes using skew polynomials with automorphisms and derivations

In this work the definition of codes as modules over skew polynomial rings of automorphism type is generalized to skew polynomial rings, whose multiplication is defined using an automorphism and a derivation. ...

D. Boucher, F. Ulmer in Designs, Codes and Cryptography (2014)

Article

Skew-cyclic codes

We generalize the notion of cyclic codes by using generator polynomials in (non commutative) skew polynomial rings. Since skew polynomial rings are left and right euclidean, the obtained codes share most prope...

D. Boucher, W. Geiselmann, F. Ulmer in Applicable Algebra in Engineering, Communi… (2007)

Article

XRCC4 in G1 suppresses homologous recombination in S/G2, in G1 checkpoint-defective cells

Non-homologous end joining (NHEJ) and homologous recombination (HR) are two pathways that can compete or cooperate for DNA double-strand break (DSB) repair. NHEJ was previously shown to act throughout the cell...

Y Saintigny, F Delacôte, D Boucher, D Averbeck, B S Lopez in Oncogene (2007)

Article

Application of a continuous-wave tunable erbium-doped fiber laser to molecular spectroscopy in the near infrared

Development of a continuous-wave tunable fiber laser-based spectrometer for applied spectroscopy is reported. Wide wavelength tunability of an erbium-doped fiber laser (EDFL) was investigated in the near-infra...

J. Cousin, P. Masselin, W. Chen, D. Boucher, S. Kassi, D. Romanini… in Applied Physics B (2006)

Article

Phage Bacteriolysis, Protistan Bacterivory Potential, and Bacterial Production in a Freshwater Reservoir: Coupling with Temperature

Phage abundance and infection of bacterioplankton were studied from March to November 2003 in the Sep Reservoir (Massif Central, France), together with temperature, chlorophyll, bacteria (abundance and product...

A.S. Pradeep Ram, D. Boucher, T. Sime-Ngando, D. Debroas… in Microbial Ecology (2005)

Article

A Tunable Difference Frequency Spectrometer for Quantitative Analysis of Heavy Molecules

A continuous-wave (cw) mid-infrared spectrometer based on laser difference frequency generation (DFG) in gallium selenide (GaSe) crystal was developed for quantitative analysis of heavy molecules. The spectrom...

E. Poullet, W. Chen, J. Burie, D. Boucher in International Journal of Infrared and Mill… (2003)

Article

Atmospheric Gas Detection with Broadband Sources

We investigate a new experimental method for detecting molecules from the ultraviolet to the near infrared range using ultrashort laser pulses. Two types of sources are used: a white light continuum generated ...

M. Tassou, C. Przygodzki, H. Delbarre… in International Journal of Infrared and Mill… (2002)

Article

Mid-infrared trace gas detection using continuous-wave difference frequency generation in periodically poled RbTiOAsO4

A tunable mid-infrared continuous-wave (cw) spectroscopic source in the 3.4–4.5 μm region is reported, based on difference frequency generation (DFG) in a quasi-phase-matched periodically poled RbTiOAsO₄ (PPRTA) ...

W. Chen, G. Mouret, D. Boucher, F.K. Tittel in Applied Physics B (2001)

Article

Renovascular hypertension and focal segmental glomerulosclerosis in the contralateral kidney

I Côté, D Boucher, M Lebel in Journal of Human Hypertension (2001)

Article

A Criterion for Using Spectral Interferometry in Far Infrared Dispersion Measurements

High precision index measurements (Δn/n ≤ 10^-5) have been recently achieved on an AgGaS₂ crystal using a spectral interferometry technique with a polarized white-light continuum. Up to now, these measurements are...

H. Delbarre, C. Przygodzki, M. Tassou… in International Journal of Infrared and Mill… (2000)

Article

Femtosecond optical pulse compression in a one-dimensional thin photonic crystal

The effect of femtosecond laser pulse compression is discovered, described, and experimentally studied for a one-dimensional 4.8-μm-thick photonic crystal.

A. V. Andreev, A. V. Balakin, D. Boucher… in Journal of Experimental and Theoretical Ph… (2000)

Article

High-precision index measurement in anisotropic crystals using white-light spectral interferometry

White-light spectral interferometry appears an excellent tool for precise determination of indices, and has already been successfully applied to different isotropic or weakly dispersive materials such as glass...

H. Delbarre, C. Przygodzki, M. Tassou, D. Boucher in Applied Physics B (2000)

Article

Amplification of the generation of the sum-frequency signal in multilayer periodic structures at the edges of the Bragg band gap

A new property of a one-dimensional periodic structure — amplification of the sum-frequency signal arising under the simultaneous action of two laser pulses on this structure with radiation frequencies corresp...

A. V. Balakin, V. A. Bushuev… in Journal of Experimental and Theoretical Ph… (1999)