Particle size analysis in pharmaceutical industry: specific requirements

Conference (2010, February 22)

Particle size, shape and structure characterisation

Scientific conference (2012, May 15)

Particle texture analysis using polarized light imaging and grey level intercepts

in International Journal of Mineral Processing (2007), 84(1-4), 299-309

The usual characterization of particulate ore material with image analysis includes modal analysis and liberation analysis. Both methods include stereological corrections based on intercept length ... [more ▼]

The usual characterization of particulate ore material with image analysis includes modal analysis and liberation analysis. Both methods include stereological corrections based on intercept length distributions within each phase of interest. The first principle of stereology relies on a simple assumption of uniform random sectioning, whereas the liberation models require all particles to have similar textural properties. However, for the sake of adequate prediction of ore behavior in industrial processes it is becoming more and more important to be able to describe particle populations in terms of texture classes. Among the texture analysis techniques, this paper focuses on mean intercept length (MIL). It brings two important improvements: the first one is to improve grain boundary imaging by using images of bireflectant minerals under plane polarized illumination, the second one is to consider intercept analysis on grey level images instead of binary ones. The method is illustrated on a selection of critical hematite textures found within banded iron formations. (C) 2007 Elsevier B.V. All rights reserved. [less ▲]

Particle-in-particle morphology for the dispersed phase formed in reactive compatibilization of SAN/EPDM blends

in Polymer (2001), 42(5), 1893-1906

Poly(ethylene-co-propylene-co-diene) (EPDM) containing 50 wt% of poly(ethylene-co-propylene) grafted with maleic anhydride (EP-g-MA) has been melt blended with poly(styrene-co-acrylonitrile) (SAN) added ... [more ▼]

Poly(ethylene-co-propylene-co-diene) (EPDM) containing 50 wt% of poly(ethylene-co-propylene) grafted with maleic anhydride (EP-g-MA) has been melt blended with poly(styrene-co-acrylonitrile) (SAN) added with various amounts of reactive SAN, i.e. SAN bearing either primary amine (SAN-NH2) or carbamate groups (SAN-carb). Carbamate groups are precursors of primary amines by thermal thermolysis during melt processing. These reactive systems are good models for studying the effect of the kinetics of the interfacial reaction on the phase morphology. Reaction of maleic anhydride with the primary amine is indeed very fast, at high temperature, in contrast to the reaction with carbamate, which is controlled by the carbamate thermolyis into primary amine. Special attention has been paid to the experimental conditions required for the development of the particle-in-particle morphology for the dispersed phase. Depending on the mixing sequence and the grafting kinetics (NH2/MA versus carb/MA), this particular phase morphology can be forced or occurs spontaneously. [less ▲]

Particular points of elastic analysis of clad pitched roof portal frame structures

in Thin-Walled Structures (1984), 2(2), 165-174

Particularités de la personne âgée malade

Conference (2013, March 22)

Particularités de la prise en charge de l'excès pondéral chez l'adolescent : résultats d'une enquête exploratoire et implications pour la pratique

in Bulletin d'Education du Patient (2000), 19(3), 132-138

Particularités physiologiques et physiopathologiques de la fonction pulmonaire des bovins

in Point Vétérinaire (1991), 23(140), 793-799

This review détails the specific factors of respiratory function in cattle, the purpose being to understand cattle's great sensitivity te respiratory conditions, to be able to breed them for an optimal ... [more ▼]

This review détails the specific factors of respiratory function in cattle, the purpose being to understand cattle's great sensitivity te respiratory conditions, to be able to breed them for an optimal functioning of their respiratory metabolism, and to adapt the prevention of respiratory conditions to the physiological specificity of this species. For each main respiratory syndrome, the consequences on the vital functions, and particularly for the respiratory function, are analyzed (9 tables, 33 references). [less ▲]

Particularities of the bucco-pharyngeal apparatus in Zenarchopterus kampeni (Pisces : Hemiramphidae) and their probable significance in feeding

in Belgian Journal of Zoology (2002), 132(2), 125-132

The present study shows several new anatomical particularities of the buccal and pharyngeal parts of the halfbeak Zenarchopterus kampeni. The upper buccal jaw consists of premaxillaries and maxillaries ... [more ▼]

The present study shows several new anatomical particularities of the buccal and pharyngeal parts of the halfbeak Zenarchopterus kampeni. The upper buccal jaw consists of premaxillaries and maxillaries tightly joined by ligaments. A 10degrees lowering of the mandible leads to a 30degrees elevation of the upper jaw. The adductor mandibulae is reduced to bundles A(2) and Aomega. As in the Labridae, the lower pharyngeal jaw articulates with the scapular girdle. The upper pharyngeal jaw consists of distinct second pharyngobranchials followed by the third pharyngobranchials fused into a powerful posterior component. This part fits into and slides along a longitudinal ventral gutter of the neuroranium, thanks not only to the dorsal retractor muscles but also to specific retractors of the second pharyngobranchials. The power and dentition of the pharyngeal parts contrasts with the fragility of the buccal elements. [less ▲]

La particule m-r-a en néo-égyptien

in Claes, W.; Hendrickx, S.; De Meulenaere, H. (Eds.) Elkab and Beyond. Studies in Honour of Luc Limme (2009)