Search results for " tg"
showing 10 items of 56 documents
Evaluation avant construction de l'impact d'un ouvrage linéaire en remblai sur le risque de gel printanier: exemples sur la LGV est-européenne dans l…
2006
Afin d'évaluer dans un vignoble l'incidence sur la fréquence du gel dommageable (t° < -2°C) que pourrait créer un futur remblai de la Ligne à Grande Vitesse Est européenne, une bâche ayant la longueur et la hauteur de cet ouvrage a été installée sur le site des Fonds de Sillery (sud-est de la ville de Reims). Pour les situations météorologiques de type radiatif, des mesures de la température et des écoulements d'air froid, ont été effectuées, durant le printemps 2001, sur 19 points implantés en amont du futur remblai, simulé par une bâche. La comparaison des résultats sans bâche (2 nuits de mesure), puis avec sa présence (3 nuits), montre que cet ouvrage permettra la formation d'un lac d'ai…
Arbitrage interne. Récusation d'un arbitre, difficultés, Président du tribunal de grande instance, ordonnance rejetant la demande de récusation, voie…
1997
International audience; (Civ. 2e, 18 déc. 1996, Soc. Spedidam c/ Soc. Adani, Bull. civ. II, n° 283, p. 171)
Effects of pyrolysis conditions on the thermal transformation of chicken manure into char
2012
Biochar is a fine-grained and highly porous carbonaceous substance, arising from the pyrolitic decomposition of natural or synthetic organic materials. It is lately applied to soils to favorably affect soil physico-chemical properties, such as water and nutrient retention and cation exchange capacity (CEC). The extent of the effect of biochar on crop productivity is very variable due to the different biophysical interactions and processes that occur when it is applied to soils. Char properties are greatly influenced by both natures of feedstock and process conditions. An accurate characterization of biochar is crucial to evaluate the possibility to amend soil with such material by avoiding …
Study of [2-(2’-pyridyl)imidazole] complexes to confirm two main characteristic thermoanalytical behaviors of transition metal complexes based on imi…
2016
Abstract Imidazole derivative ligands are recognized as useful models for biomimetic complexes. Among the inorganic–organic hybrid complexes, those with derivatives of imidazole heterocyclic N-donor ligands are interesting for their framework. In previous studies of complexes with imidazole derivative ligands, our group reported two main thermally induced decomposition behaviors supporting two different systematic decomposition trends. In this work, one of these characteristic decomposition mechanisms was again found. The final goal of these serial studies is the possibility to provide, by the experimental evidences, a prediction model of thermal stability and decomposition typical behavior…
Effect of Heating Time and Temperature on the Chemical Characteristics of Biochar from Poultry Manure
2014
Poultry manure (PM) chars were obtained at different temperatures and charring times. Chemical-physical characterization of the different PM chars was conducted by cross-polarization magic angle spinning (CPMAS) (13)C NMR spectroscopy and thermal analysis. CPMAS (13)C NMR spectra showed that the chemical composition of PM char is dependent on production temperature rather than on production duration. Aromatic and alkyl domains in the PM chars obtained at the lowest temperatures remained unchanged at all heating times applied for their production. The PM char obtained at the highest temperature consisted only of aromatic structures having chemical nature that also appeared invariant with hea…
Sustainable nanocomposites based on halloysite nanotubes and pectin/polyethylene glycol blend
2013
Abstract This study was focused on the preparation and characterization of biofilms based on pectin/polyethylene glycol 20000 (PEG) blend and halloysite nanotubes (HNTs). The obtained blends loaded with a natural nanoclay are proposed as sustainable alternative to the polymers produced from non-renewable resources such as fossil fuels. Properties of technological interest have been monitored and they were correlated to the structural features of the nanocomposites. It turned out that the wettability of the films can be tuned by changing the composition and the distribution of HNTs into the material as well as the surface roughness. The tensile properties of the blend are enhanced by the pre…
The new version of the pictorial scale of Perceived Movement Skill Competence in Spanish children: Evidence of validity and reliability. [La nueva ve…
2019
The purpose of this study was to i) examine reliability and construct validity of the pictorial scale of Perceived Movement Skill Competence (PMSC) aligned to the third version of the Test of Gross Motor Development (TGMD-3) in a sample of Spanish children; and to ii) analyse the validity of the PMSC and children’s perceived motor competence (MC) according to gender. A convenience sample of 361 children (55.7% boys) between 4 and 11 years-old participated. The pictorial scale of PMSC (19 items) was administered (a random subsample repeated the PMSC twice). Test-retest reliability using Intraclass Correlation Coefficients and construct validity using a Bayesian Structural Equation Modeling a…
Les gares TGV dans les zones périurbaines des villes moyennes sont-elles des vecteurs de métropolisation ?
2012
19 p Article proposé aux les Cahiers scientifiques des transports Appel à contribution au dossier thématique (N° 63/2013) " TGV et villes petites et moyennes : les enseignements d'études de cas en Europe "; International audience; Cet article s'interroge sur la manière dont les nouvelles gares TGV installées en bordure d'agglomération de taille moyenne prennent place dans le processus de métropolisation qui structure la hiérarchie urbaine. Plus précisément, il cherche à préciser une méthodologie adaptée à cette question dans un contexte de villes moyennes pour servir de cadre à une proposition de recherche.
Les gares TGV: des interfaces au service du projet urbain?
2012
Au contact de trois systèmes spatiaux d’échelle différente (le réseau ferré, son aire d’influence régionale et la ville), la gare apparaît comme une triple interface dont le fonctionnement a été bouleversé par l’arrivée de la grande vitesse, qui a fait de la gare un élément clé des politiques d’aménagement urbain. Cette capacité des gares à stimuler l’émergence de nouveaux projets urbains peut être analysée à la lumière des interactions qui s’établissent entre les trois dimensions de l’interface ferroviaire, interactions dont l’efficacité reste étroitement subordonnée à la localisation des gares et constitue un facteur clé de leur intégration territoriale, comme le montre l’exemple des gare…
Regulatory cytokine gene polymorphisms and risk of colorectal carcinoma.
2006
It is well established that cancer arises in chronically inflamed tissue, and this is particularly notable in the gastrointestinal tract. Classic examples include Helicobacter pylori-associated gastric cancer, hepatocellular carcinoma, and inflammatory bowel disease-associated colorectal cancer. Growing evidence suggests that these associations might be not casual findings. Focusing on individual cytokines has generated evidence that anti-inflammatory cytokine interleukin (IL)-10 and transforming growth factor-beta1 (TGF-beta1) may have a complex role in gastrointestinal carcinogenesis. As an example, IL-10-deficient mice develop severe atrophic gastritis and a chronic enterocolitis, develo…