Search Results - "Sagnard, F"

Genetic structure and relationships within and between cultivated and wild sorghum (Sorghum bicolor (L.) Moench) in Kenya as revealed by microsatellite markers by Mutegi, E, Sagnard, F, Semagn, K, Deu, M, Muraya, M, Kanyenji, B, de Villiers, S, Kiambi, D, Herselman, L, Labuschagne, M

“…Understanding the extent and partitioning of diversity within and among crop landraces and their wild/weedy relatives constitutes the first step in conserving…”
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Design of a Wideband Antenna for a Narrow Borehole Radar Using FDTD Modeling by Sagnard, F.-M.

“…For the design of a narrow wideband antenna (with diameter less than 3 cm) to serve in a borehole radar in the band [0.5,1.5] GHz for moisture content…”
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Design of Compact UWB Planar Monopole Antennas for Cross-Hole Radar Application by Sagnard, F.-M.

“…Printed rectangular antennas with a relatively small width (less than 60 cm) have been specifically designed to serve in a cross-hole radar for soil…”
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Niger-wide assessment of in situ sorghum genetic diversity with microsatellite markers by Deu, M, Sagnard, F, Chantereau, J, Calatayud, C, Hérault, D, Mariac, C, Pham, J.-L, Vigouroux, Y, Kapran, I, Traore, P. S, Mamadou, A, Gerard, B, Ndjeunga, J, Bezançon, G

“…Understanding the geographical, environmental and social patterns of genetic diversity on different spatial scales is key to the sustainable in situ management…”
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Analytical modelling of the current distribution in resistive loaded thin-wire antennas excited by a transient electric field by Sagnard, F.

“…The analytical modelling of the excitation of a Wu and King loaded dipole by an oblique transient electric‐plane wavefront has been revisited and extended in…”
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Full-wave modeling of the time domain reflectometry signal in wetted sandy soils using a random microstructure discretization: Comparison with experiments by Rejiba, F., Sagnard, F., Schamper, C.

“…Time domain reflectometry (TDR) is a proven, nondestructive method for the measurement of the permittivity and electrical conductivity of soils, using…”
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Spatio-temporal dynamics of genetic diversity in Sorghum bicolor in Niger by Deu, Monique, Sagnard, F, Chantereau, J, Calatayud, C, Vigouroux, Y, Pham, J. L, Mariac, C, Kapran, I, Mamadou, A, Gérard, B, Ndjeunga, J, Bezançon, G

“…The dynamics of crop genetic diversity need to be assessed to draw up monitoring and conservation priorities. However, few surveys have been conducted in…”
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In-situ characterization of soil moisture content using a monopole probe by Sagnard, F.M., Guilbert, V., Fauchard, C.

“…In this paper, a microwave non-destructive experimental tool based on a monopole antenna is used for the determination of the complex permittivity of soils…”
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In situ characterization of building materials for propagation modeling: frequency and time responses by Sagnard, F., Zein, G.E.

“…We propose original data processing methods for the dielectric characterization of frequency-dependent reflection coefficients of construction materials…”
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Local scale patterns of gene flow and genetic diversity in a crop–wild–weedy complex of sorghum (Sorghum bicolor (L.) Moench) under traditional agricultural field conditions in Kenya by Mutegi, E., Sagnard, F., Labuschagne, M., Herselman, L., Semagn, K., Deu, M., de Villiers, S., Kanyenji, B. M., Mwongera, C. N., Traore, P. C. S., Kiambi, D.

“…Little information is available on the extent and patterns of gene flow and genetic diversity between cultivated sorghum and its wild related taxa under local…”
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In situ measurements of the complex permittivity of materials using reflection ellipsometry in the microwave band: theory (part I) by Sagnard, F., Bentabet, F., Vignat, C.

“…The aim of this series of two papers is to propose an original and low-cost tool dedicated to industrial applications and based on the reflection ellipsometry…”
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Structure of Genetic diversity in Abies alba Mill. from southwestern Alps: multivariate analysis of adaptive and non-adaptive traits for conservation in France by Sagnard, F, Barberot, C, Fady, B

“…Abies alba is one of the major European mountain forest species for which a gene resource conservation network exists in France. However, scattered populations…”
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Reflection ellipsometry for in-situ determination of complex permittivity and thickness of a single-layer material at several angles of incidence and frequencies by Sagnard, F.

“…Several experimental results on common single‐layer samples have been obtained in the microwave domain using the reflection ellipsometry technique and two…”
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Determination of complex permittivlty and thickness of a single-layer material using reflection ellipsometry at several angles of incidence by Sagnard, F

“…An analytic formulation is proposed to obtain both complex permittivity and thickness of a single-layer material from reflection ellipsometry data obtained at…”
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Investigation of recent population bottlenecks in Kenyan wild sorghum populations (Sorghum bicolor (L.) Moench ssp. verticilliflorum (Steud.) De Wet) based on microsatellite diversity and genetic disequilibria by Muraya, M. M, Sagnard, F, Parzies, H. K

“…Identifying populations that have recently suffered a severe reduction in size is particularly important for their conservation as they are likely to suffer an…”
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Determination of complex permittivity and thickness of a single-layer material using reflection ellipsometry at several angles of incidence by Sagnard, F.

“…An analytic formulation is proposed to obtain both complex permittivity and thickness of a single‐layer material from reflection ellipsometry data obtained at…”
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Educational graphical interfaces to learn about radiation and propagation of electromagnetic waves by Sagnard, F.

“…This paper presents an educational software tool based on three graphical Matlab interfaces. It allows the visualization of electromagnetic propagation…”
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Experimental study of the influence of moisture and dry density on a silt soil using a monopole probe by Sagnard, F., Beck, Y.-L.

“…Dielectric measurements have been made on a silt soilboard with three moisture contents and different densities using a short monopole probe at microwave…”
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In situ measurements of the complex permittivity of materials using reflection ellipsometry in the microwave band: experiments (Part II) by Sagnard, F., Bentabet, F., Vignat, C.

“…The aim of this series of two papers is to propose a new experimental tool based on the reflection ellipsometry technique for in situ characterization of…”
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Extension of the analytical modelling of resistive loaded thin-wire antennas to Gaussian derivatives excitations by Sagnard, F., Vignat, C.

“…The transient electric field radiated from a thin‐wire dipole antenna resistively loaded and excited by a voltage signal in the shape of the Gaussian…”
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