In this study, mechanically alloyed Al 2024 powder is densified by conventional sintering and by equal channel angular pressing (ECAP) with and without back pressure. The powder was encapsulated in an aluminium can for consolidation through ECAP. The properties obtained in the compacts by conventional sintering route and by ECAP are compared. The effect of conventional sintering and ECAP on con...

Résumé. Une légère modification de la notion de compacité relativement à un opérateur de fermeture permet d’étendre à la catégorie TOP des espaces topologiques divers résultats sur les opérateurs de fermeture réguliers obtenus pour la catégorie AB des groups abéliens. Ainsi les épimorphismes dans les sous-catégories des objets compacts ou compactsséparés pour un opérateur de fermeture régulier ...

Consider a charged, perfect quantum gas, in the effective mass approximation, and in the grand-canonical ensemble. We prove in this paper that the generalized magnetic susceptibilities admit the thermodynamic limit for all admissible fugacities, uniformly on compacts included in the analyticity domain of the grand-canonical pressure. The problem and the proof strategy were outlined in [3]. In [...

Nous introduisons une notion d’induction de cocycle pour les réseaux approximatifs uniformes forts dans groupes localement compacts à base dénombrable, et nous l’utilisons mettre en relation type Kazhdan Haagerup (relatifs) avec propriétés correspondantes des ambiants compacts. Notre approche s’applique larges classes (bien que pas toutes) est suffisamment souple couvrir versions L p propriété ...

Liquisolid systems are a novel, promising platform for the production of solid dosage forms with high liquid content, i.e. dispersion drug in suitable, hydrophilic, non-volatile vehicle or drug. This technology requires conventional, but highly porous excipients (carrier and coating material appropriate ratio) able to absorb/adsorb medication, resulting both good flowability acceptable compress...

The paper establishes an analog of well-known Novikoff’s theorem on the perceptron learning algorithm’s finite convergence in linearly separated classes. We obtain a similar result concerning nearest neighbor classification algorithm case compact classes general metric space for non-intersecting process consists gradual modification misclassification cases. is studied deterministic setting. Cla...

Tortuosity is defined as the ratio of the actual path length from start to goal through the pores to the Euclidean distance (shortest linear distance). However, traditional methods to calculate tortuosity, such as the calculation of tortuosity out of the results from dissolution experiments, do not determine path length directly. In this paper we describe the application of image analysis for d...