Search results for "table"

La perception des accords aromatiques : un exemple d'interactions perceptives dans les mélanges odorants

2007

Diplôme : Dr. d'Université; Dans le monde de la parfumerie et de l'aromatique, il existe un terme particulier définissant la formation d'une nouvelle qualité odorante à travers le mélange et la fusion de plusieurs odeurs : l'accord. Ce terme, largement employée parmi ces experts, n'avait jamais donné lieu à des études scientifiques approfondies.L' objectif de cette thèse a été de démontrer la réalité de l'accord en olfaction et de montrer qu'il repose sur des interactions perceptives influençant la qualité de l'odeur. Nous avons en particulier étudié les déterminants physico-chimiques, perceptifs et cognitifs des accords aromatiques. Dans un premier temps, nous avons démontré que la percept…

Influence des pratiques d’allaitement et de diversification sur l’acceptation de flaveurs nouvelles chez le jeune enfant : variabilité intra- et inte…

2007

This thesis covers three separate but related studies. The first, a questionnaire survey of infant feeding practices in two nearby European regions (Dijon, France and Aalen, Germany) reports between- and withinregion differences in breastfeeding duration and variety of vegetables offered early in weaning. This survey identified the level and rate of vegetable variety and the specific foods to use in a second study. The 2nd study examined the effects of breast- or formula-feeding and different levels of vegetable variety (no, low or high) early in weaning on acceptance (intake and liking) of new foods. The foods were: (1) a first new vegetable offered immediately after the intervention; (2) …

Role of protozooplankton in the diet of North Sea autumn spawning herring (Clupea harengus) larvae

2022

AbstractThe role of small prey (< 200 µm) in larval marine fish nutrition is largely understudied. Here, we explore the contribution of protozooplankton (PZP 20–200 µm) to larval fish diets, compared to metazoan microzooplankton (MZP 55–200 µm). More specifically, we tested whether the contribution of PZP increased during the low productivity season and decreased as larvae grow. We used North Sea autumn spawning herring (Clupea harengus) as a case study, as it is a key species with high commercial and ecological importance. In autumn and winter, the potential PZP and MZP prey was dominated by cells < 50 µm (mainly Gymnodiniales, Pronoctiluca pelagica,Tripos spp. and Strombidium spp.),…

Comparative analysis of atmospheric radiative transfer models using the Atmospheric Look-up table Generator (ALG) toolbox (version 2.0)

2019

Abstract. Atmospheric radiative transfer models (RTMs) are software tools that help researchers in understanding the radiative processes occurring in the Earth's atmosphere. Given their importance in remote sensing applications, the intercomparison of atmospheric RTMs is therefore one of the main tasks used to evaluate model performance and identify the characteristics that differ between models. This can be a tedious tasks that requires good knowledge of the model inputs/outputs and the generation of large databases of consistent simulations. With the evolution of these software tools, their increase in complexity bears implications for their use in practical applications and model interco…

Alg: a Toolbox for the Generation of Look-Up tables Based on Atmospheric Radiative Transfer Models

2018

Atmospheric radiative transfer models (RTMs) are software tools describing the radiation processes occurring on the Earth’s atmosphere. While the evolution of these tools have achieved better representations of the light-atmosphere interactions, the increase of complexity, interpretability and computation time bears implications towards practical applications in Earth observation. Despite of existing RTM-specific graphical user interfaces, none of these tools allow common streamlining model setup for a wide variety of atmospheric RTMs. In addition, the automatic generation of atmospheric look-up tables (LUTs) can hardly be done with the use of these graphical tools. This paper presents the …

Gradient-Based Automatic Lookup Table Generator for Radiative Transfer Models

2022

Physically based radiative transfer models (RTMs) are widely used in Earth observation to understand the radiation processes occurring on the Earth’s surface and their interactions with water, vegetation, and atmosphere. Through continuous improvements, RTMs have increased in accuracy and representativity of complex scenes at expenses of an increase in complexity and computation time, making them impractical in various remote sensing applications. To overcome this limitation, the common practice is to precompute large lookup tables (LUTs) for their later interpolation. To further reduce the RTM computation burden and the error in LUT interpolation, we have developed a method to automaticall…

West African Monsoon water cycle: 1. A hybrid water budget data set

2010

International audience; This study investigates the West African Monsoon water cycle with the help of a new hybrid water budget data set developed within the framework of the African Monsoon Multidisciplinary Analyses. Surface water and energy fluxes are estimated from an ensemble of land surface model simulations forced with elaborate precipitation and radiation products derived from satellite observations, while precipitable water tendencies are estimated from numerical weather prediction analyses. Vertically integrated atmospheric moisture flux convergence is estimated as a residual. This approach provides an advanced, comprehensive atmospheric water budget, including evapotranspiration,…

Criteria for species determination in the 'revolutum' group of Echinostoma.

2004

Data for: Variability in δ13C values between individual Daphnia ephippia: Implications for palaeo-studies

2018

Table providing the d13C values of individual Daphnia ephippia determined through laser ablation, nano combustion gas chromatography and isotope ratio mass spectrometry.

Unveiling community patterns and trophic niches of tropical and temperate ants using an integrative framework of field data, stable isotopes and fatt…

2018

Background: The use and partitioning of trophic resources is a central aspect of community function. On the ground of tropical forests, dozens of ant species may be found together and ecological mechanisms should act to allow such coexistence. One hypothesis states that niche specialization is higher in the tropics, compared to temperate regions. However, trophic niches of most species are virtually unknown. Several techniques might be combined to study trophic niche, such as field observations, fatty acid analysis (FAA) and stable isotope analysis (SIA). In this work, we combine these three techniques to unveil partitioning of trophic resources in a tropical and a temperate community. We d…