Heterograft copolymers of poly(epsilon-caprolactone) prepared by combination of ATRA "grafting onto" and ATRP "grafting from" processes

in Journal of Polymer Science Part A-Polymer Chemistry (2006), 44(20), 6015-6024

This paper aims at reporting on the synthesis of a heterograft copolymer by combining the "grafting onto" process based on atom transfer radical addition (ATRA) and the "grafting from" process by atom ... [more ▼]

This paper aims at reporting on the synthesis of a heterograft copolymer by combining the "grafting onto" process based on atom transfer radical addition (ATRA) and the "grafting from" process by atom transfer radical polymerization (ATRP). The statistical copolymerization of epsilon-caprolactone (epsilon-CL) and alpha-chloro-epsilon-caprolactone (alpha-Cl-epsilon-CL) was initiated by 2,2-dibutyl-2-stanna-1,3-dioxepane (DSDOP), followed by ATRA of parts of the chlorinated units of poly(alpha-Cl-epsilon-CL-co-epsilon CL) on the terminal double bond of alpha-MeO,omega-CH2=CH-CH2-CO2-poly(ethylene oxide) (PEO). The amphiphilic poly(epsilon CL-g-EO) graft copolymer collected at this stage forms micelles as supported by dynamic light scattering (DLS) and transmission electron microscopy (TEM). The unreacted pendant chloro groups of poly(epsilon-CL-g-EO) were used to initiate the ATRP of styrene with formation of copolymer with two populations of randomly distributed grafts, that is PEO and polystyrene [less ▲]

Heterotransplantation of Primary and Established Human Tumour Cells in Nude Mice

in Anticancer Research (1995), 15(1, Jan-Feb), 1-7

Previous successful transplantations of human tumour cells into athymic nude mice have been described when cells were injected with a reconstituted basement membrane (matrigel). We have compared the ... [more ▼]

Previous successful transplantations of human tumour cells into athymic nude mice have been described when cells were injected with a reconstituted basement membrane (matrigel). We have compared the development and the histology of tumours following injection with matrigel or with culture medium of a panel of tumour cells exhibiting different degrees of tumorigenicity. Two cell lines (MCF7 and MCF7/6) required matrigel in order to form tumours. When inoculated with matrigel, all the other cell lines tested [MCF7 gpt, MCF7ras, MCF7(AZ), MCF7(AZ)TD5, MDA-MB 231, HT1080] showed increased tumour take and reduced latency period. Human primary tumours (melanoma, breast and colon cancers) were transplanted successfully into nude mice, in the presence of matrigel. Breast primary tumours or cell lines gave rise to poorly differentiated carcinomas. The other tumours presented histopathological patterns typical of differentiated human cancers. [less ▲]

Heur(t)s et malheurs dans le contre-transfert

Conference given outside the academic context (2012)

"L'Heure du Nègre": Simenon au Congo

in Demoulin, Laurent (Ed.) L'Herne Georges Simenon (n°102) (2013)

A heuristic method to schedule training programs for Small and Medium Enterprises

in European Journal of Operational Research (2012), 217

During the life period of Small and Medium Enterprises (SMEs) in incubators they need some training programs to acquire the required knowledge in order to survive and succeed in the business environment ... [more ▼]

During the life period of Small and Medium Enterprises (SMEs) in incubators they need some training programs to acquire the required knowledge in order to survive and succeed in the business environment. This paper presents a heuristic method based on an optimization model to schedule these programs at the most suitable times. Based on the proposed heuristic, each training program is implemented in a suitable time by considering the SMEs’ requirements and some other logical constraints. The proposed heuristic is described in detail, and its implementation is demonstrated via a real-life numerical example. The numerical results of the heuristic are compared with other methods. [less ▲]

Heurs et malheurs de l'enseignement de la rhétorique

in Enjeux : Revue de Formation Continuée et de Didactique du Français (2010), 79

HEXAGONAL MARANGONI CONVECTION IN A RECTANGULAR BOX WITH SLIPPERY WALLS

in Quarterly Journal Of Mechanics And Applied Mathematics (1993), 46(Part 4), 683-707

HF radar observations of surface currents in the German Bight: descriptive analysis, model-data comparison and non-sequential ensemble data assimilation

Conference (2009, September)

Hic et Nunc. Naevus ou melanome?

in Revue Médicale de Liège (2006), 61(1), 43-7

In Wallonia, the incidence of cutaneous melanoma has steadily increased over the past decades. Hopefully, the early diagnosis made at the premetastatic stage has benefited from great advances both in the ... [more ▼]

In Wallonia, the incidence of cutaneous melanoma has steadily increased over the past decades. Hopefully, the early diagnosis made at the premetastatic stage has benefited from great advances both in the clinical and laboratory fields. Thanks to the "Groupement Oncologique Universitaire Wallonie-Liege" (GOUWL) organization, some efforts are currently made in order to better frame and normalize the management of cancer patients. Some medical staffs involved in prospective clinical research bring by their own experience further practical insights for the benefit to the patients. In this field, Belgium is not destituted. We report a brief review of the contribution of the Mosan Study Group of Pigmentary Tumors (GMETP) at the University Hospital of Liege. [less ▲]

The hidden function of NIK (NF-κB-Inducing Kinase) in cell death

Conference (2011)