Sur la mesure des pressions de coupe lors d'un fraisage en bout

Report (1995)

In turning operations, the measure of cutting pressures does not present difficulties, as these pressures are obtained by dividing by the cutting section the forces whose three components may be measured ... [more ▼]

In turning operations, the measure of cutting pressures does not present difficulties, as these pressures are obtained by dividing by the cutting section the forces whose three components may be measured. The case of milling operations is completely different, firstly because of the tool rotation, and secoundly because the cutting section continually varies. Therefore, the cutting pressure has to be measured indirectly, using a model of the cutting force variation with the cutting section. In this paper, two such models are presented, the first one assuming that the cutting pressure is independent of the cutting section, the second one using Kienzle's model. [less ▲]

Urban remote sensing investigations.

in Space scientific research in Belgium - Earth observation (1995)

This paper deals with the research activities achieved by the team TELSAT/06-TELSAT/11/06-TELSAT/T3/D03 of the University of Liege, in the framework of the National research programme on satellite remote ... [more ▼]

This paper deals with the research activities achieved by the team TELSAT/06-TELSAT/11/06-TELSAT/T3/D03 of the University of Liege, in the framework of the National research programme on satellite remote sensing (National Scientific Policy Office). The team specialized in urban remote sensing and especially in applications relevant to urban, land and country planning and the monitoring of enevironment. Besides a theoretical approach of the methods of remote sensing, those trends imply a good skill of hybrid geographical information systems and an expertise in satellite mapping. One the one hand satellite images are radiometric value matrices and must be exploited in a numeric way, on the other hand the needed references to ground-truth require to use visual interpretation methods. As most of the image processing systems have not or had not the necessary functions for extracting and enhancing information, the team has developed or implemented such tools. The main fields of these tools are: mathematical morphology, image segmentation, rasterization and vectorization, contextual filters, transformation of discrete data to spatial continous models. Various methods of optimization of classification are presented, e.g. use of neo-channels (textural or others), zone classification in¬stead of pixels ones, morphological filtering applied to post-classification. The superimposition of vectorial information produced by SIG on raster classification and the use of map publishing software allow to produce regular satellite maps. The content of landuse maps fulfills some needs of survey for country planning. For some applications, remote sensing methodology is more suited than traditional ones. This is the case to spin up of country into homogeneous regions or for finding net density by use of dasymetric methodology. Another interesting way of working consists in the modelling of landuse map content with a quantitative geographical approach. The raster and numerical nature of satellite images makes easier the construction of continuous models which can be assimilated to statistical surfaces. These surfaces allow analysis of geographical, hierarchi¬cal and chronological aspects of distribution. A specific interest can be found in the comparison of the urban potential statistical surfaces with the central place theory (W. Christaller) and with the economic polarization theory (F. Perroux). Ecological zoning can be found by coloured composition of 3 statistical surfaces. The 3 most important categories of landuse (water, vegetation and concrete) can be seen as the main structure of biotops and lead to the interpretation in ecosystemic terms. The choice of satellite image allows to cover the full range of scales from cities to regional analysis. The applications concern mainly the "Euregio Mcuse-Rhine" cross-border region and its urbanized core (Liege, Aachen, Maastrichr, Hasselt, etc.). The metho¬dology has also been used outside of the Euregio (agglomeration of Luxembourg, metropolitan area of Lisbon, Warsaw, etc.). Anyway, spatial landuse maps must be seen as a specific layer of a regional GIS. The Crossing of satellite data with data stemming from other sources allows to set out and to solve a lot of problems relevant to country planning practise. This paper analyses successively the constraints of applicability, the stade of the art in urban remote sensing, the used methodologies, the completed end- and sub-products, the assessment of the research and an exhaustive bibliography. [less ▲]

Prognostic markers in malignant diseases

in Scandinavian Journal of Clinical and Laboratory Investigation. Supplementum (1995), 55

Miospore evidence for pre-Emsian and latest Famennian sedimentation in the Devonian of the Paraná Basin, South Brazil

Conference (1995)

Functional analysis of the Antirrhinum floral homeotic DEFICIENS gene in vivo and in vitro by using a temperature-sensitive mutant.

in Development (1995), 121(9), 2861-75

Flowers of the temperature-sensitive DEFICIENS (DEF) mutant, def-101, display sepaloid petals and carpelloid stamens when grown at 26 degrees C, the non-permissive temperature. In contrast, when ... [more ▼]

Flowers of the temperature-sensitive DEFICIENS (DEF) mutant, def-101, display sepaloid petals and carpelloid stamens when grown at 26 degrees C, the non-permissive temperature. In contrast, when cultivated under permissive conditions at 15 degrees C, the morphology of def-101 flowers resembles that of the wild type. Temperature shift experiments during early and late phases of flower development revealed that second and third whorl organ development is differentially sensitive to changes in DEF expression. In addition, early DEF expression seems to control the spatially correct initiation of fourth whorl organ development. Reduction of the def-101 gene dosage differentially affects organogenesis in adjacent whorls: at the lower temperature development of petals in the second whorl and initiation of carpels in the centre of the flower is not affected while third whorl organogenesis follows the mutant (carpelloid) pattern. The possible contribution of accessory factors to organ-specific DEF functions is discussed. In situ analyses of mRNA and protein expression patterns during def-101 flower development at 15 degrees C and at 26 degrees C support previously proposed combinatorial regulatory interactions between the MADS-box proteins DEF and GLOBOSA (GLO), and provide evidence that the autoregulatory control of DEF and GLO expression by the DEF/GLO heterodimer starts after initiation of all organ primordia. Immunolocalisation revealed that both proteins are located in the nucleus. Interestingly, higher growth temperature affects the stability of both the DEF-101 and GLO proteins in vivo. In vitro DNA binding studies suggest that the temperature sensitivity of the def-101 mutant is due to an altered heterodimerisation/DNA-binding capability of the DEF-101 protein, conditioned by the deletion of one amino acid within the K-box, a protein region thought to be involved in protein-protein interaction. In addition, we introduce a mutant allele of GLO, glo-confusa, where insertion of one amino acid impairs the hydrophobic carboxy-terminal region of the MADS-box, but which confers no strong phenotypic changes to the flower. The strong mutant phenotype of flowers of def-101/glo-conf double mutants when grown in the cold represents genetic evidence for heterodimerisation between DEF and GLO in vivo. The potential to dissect structural and functional domains of MADS-box transcription factors is discussed. [less ▲]

L’efficacité des images

in Goemans Camille; Magritte René (Eds.) Le Sens propre (1995)

Unaudited clinical experience.

in Fertility and Sterility (1995), 63(4), 934-5

Comparison between growing fattening bulls finished at grass or indoors. II. Meat characteristics and fat composition

in Animal Production (1995)

Análisis de contenido de la literatura sobre pedagogía del deporte

in Instituto Andaluz del Deporte/Junta de Andalucia (Ed.) Actas des Congreso Científico Olímpico 1992. Pedagogía y Educación Física Comparada (1995)

El análisis de contenido de la literature de investigación es relativamente raro enpedagogía del Deporte. Silverman (1986) realizó un análisis de tesis doctorales americanas y Piéron (1986) estableció un ... [more ▼]

El análisis de contenido de la literature de investigación es relativamente raro enpedagogía del Deporte. Silverman (1986) realizó un análisis de tesis doctorales americanas y Piéron (1986) estableció un sistema de clasificación multidimensional y lo utilizó para analizar más de 300 documentos y publicaciones de investigación aparecidas en el período de 1970 a 1983. ... [less ▲]

Utilisation de Biopesticides pour la protection des pommes en conservation

in Le fruit belge (1995), (455), 83-88