Search results for "Liber"

Enseigner la rhétorique à l’École de Bruxelles

2021

Cet article expose la conception de l’enseignement de la rhétorique à l’École de Bruxelles. Il explique l’origine de la démarche dans la pensée de Perelman. Il montre ensuite comment l’équipe du GRAL a retrouvé l’enseignement des exercices de rhétorique par les sophistes. Il propose une réflexion épistémologique pour montrer la spécificité de cet enseignement. Il termine enfin par l’exposé d’un exercice de délibération conçu et animé par les membres du GRAL. This paper outlines the conception of the teaching of rhetoric at the Brussels School. It explains the origin of the approach in the thought of Perelman. It then shows how the GRAL team recovered the teaching of rhetorical exercises by …

Two Types of Liberal Perfectionism*

2005

Since the publication of J. Raz’s Morality of Freedom (Raz 1986), liberalism has often been interpreted as a perfectionist political morality.1 The starting point of this analysis is the refusal, by Raz and other philosophers, of the distinction between theories of the good and theories of justice. According to these authors, liberalism as a theory of justice or, as it was later considered, as a “political doctrine,” faces many theoretical difficulties: the issue of neutrality, the problematic distinction between comprehensive moral doctrine and a merely political account of legitimacy, the vagueness of the concept of “citizen,” the relationship between liberal and non-liberal moral culture…

ALTERED RATIO BETWEEN AXON CALIBER AND MYELIN THICKNESS IN SURAL NERVES OF CHILDREN

1978

ABSTRACT Maturation of myelin sheaths in normal sural nerves of children proceeds more slowly than axon growth. This asynchronous development of axons and myelin sheaths results in a statistically significant change of the ratio between axon caliber and myelin thickness during normal development. Therefore, myelin thickness of individual nerve fibers must be related to the size of the axons as well as to the age of the individuals studied. Abnormalities of the relationship between myelin thickness and axon diameter (primary hypomyelination of large, or small, or all fibers) were clearly identified in cases with metachromatic leukodystrophy, KRABBE's, DEJERINE-SOTTAS’, COCKAYNE'S and SANFILI…

José Vidal Beneyto: "La heroína es solo la punta del iceberg"

1985

José Vidal Beneyto: "La heroína es solo la punta del iceberg"

1985

In vitro release of lectins by Phallusia mamillata hemocytes.

1991

Abstract α-Lactose specific lectins are released from Phallusia mamillata hemocytes during short-term cultures. The molecular weight of the subunits, the immunological cross-reaction and the sugar specificity suggest that the released lectins are similar to those isolated from the sonicated hemocytes. Because lectin release appears to take place independently of active protein synthesis, the possibility exists that lectins are pre-formed, stored in hemocytes and released when in vitro conditions stimulate the cells.

Functional Magnetic Mesoporous Silica Microparticles Capped with an Azo-Derivative: A Promising Colon Drug Delivery Device

2018

[EN] Magnetic micro-sized mesoporous silica particles were used for the preparation of a gated material able to release an entrapped cargo in the presence of an azo-reducing agent and, to some extent, at acidic pH. The magnetic mesoporous microparticles were loaded with safranin O and the external surface was functionalized with an azo derivative 1 (bearing a carbamate linkage) yielding solid S1. Aqueous suspensions of S1 at pH 7.4 showed negligible safranin O release due to the presence of the bulky azo derivative attached onto the external surface of the inorganic scaffold. However, in the presence of sodium dithionite (azoreductive agent), a remarkable safranin O delivery was observed. A…

Propolis-Based Nanofiber Patches to Repair Corneal Microbial Keratitis

2021

In this research, polyvinyl-alcohol (PVA)/gelatin (GEL)/propolis (Ps) biocompatible nanofiber patches were fabricated via electrospinning technique. The controlled release of Propolis, surface wettability behaviors, antimicrobial activities against the S. aureus and P. aeruginosa, and biocompatibility properties with the mesenchymal stem cells (MSCs) were investigated in detail. By adding 0.5, 1, and 3 wt.% GEL into the 13 wt.% PVA, the morphological and mechanical results suggested that 13 wt.% PVA/0.5 wt.% GEL patch can be an ideal matrix for 3 and 5 wt.% propolis addition. Morphological results revealed that the diameters of the electrospun nanofiber patches were increased with GEL (from…

Iontophoretic in Vitro Release of Antimycotics from Hydrogels

1993

A new in vitro model for iontophoretic release from hydrogels was developed. It represents a modification of the rotary disk cell developed by Moll/Bender and can be used in a normal dissolution tester. The iontophoretic release from antimycotic hydrogels through an artificial membrane was investigated and different types of antimycotics were tested. The influence of current density, drug concentration and vehicle was determined.

Preparation of white beeswax microspheres loaded with valproic acid and kinetic study of drug release

1995

AbstractThe well known antiepileptic valproic acid (1) due to the long treatment of epilepsy may induce many adverse side effects on various systems. To minimize unwanted toxic effects by kinetic control of drug release, 1 was physically entrapped into white beeswax microspheres using the meltable dispersion process utilizing wetting agents. Solid, discrete, reproducible free flowing microspheres were obtained converting the liquid drug droplets into solid material. The average drug content was 17% w/w. More than 95% of the isolated microspheres were of particle size range 200-425 µm. The microspheres were analyzed to quantify the amount of incorporated drug and to characterize the in vitro…