Wright Mills: sociologia

Catani, Afrânio Mendes

doi:10.1590/s0034-75901985000300010

Rev. adm. empres.

1985

DOI: 10.1590/s0034-75901985000300010

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Wright Mills: sociologia

Afrânio Mendes Catani¹

Abstract: então devemos ter a certeza de que alguém vai publicar ós artigos do colega Muhr, de O Estado de S. Paulo, da Gazeta Mercantil, as cartas à Redação, as observações etc., para ler Muhr em lugar de Parkinson e ter a lembrança de um professor que faz falta.

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1993

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Heparin-containing block copolymers

Vulić

Okano²,

Gaag

et al. 1993

J Mater Sci: Mater Med

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Newly synthesized heparin-containing block copolymers, consisting of a hydrophobic block of polystyrene (PS), a hydrophilic spacer-block of poly(ethylene oxide) (PEO) and covalently bonded heparin (Hep) as bioactive block, were coated either onto glass, poly (dimethylsiioxane), polyurethane or PS substrates. Coated surfaces were characterized by determination of the surface-bound heparin activity, adsorption of AT III, plasma recalcification time assays, adhesion of platelets and by an ex vivo rabbit A-A shunt model.It was demonstrated that heparin was available at the surface of all heparin-bound surfaces to interact with AT III and thrombin and to prevent the formation of clots. The maximum immobilized heparin activity was found to be 5.5 x 10 -3 U cm -2. Coated surfaces showed a significant prolongation of the plasma reclacification times as compared to control surfaces, due to surface-immobilized heparin. The platelet adhesion demonstrated that platelets reacted only minimally with the heparin-containing block copolymers in the test system and that the heparin-containing block copolymers seemed to passify the surface as compared to control surfaces. In the ex vivo A-A shunt experiments, which were carried out under low flow and low shear conditions, the heparin-containing block copolymers exhibited prolonged occlusion times, indicating the ability of the heparin-containing block copolymers to reduce thrombus formation at the surface.

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Heparin-containing block copolymers

Vulić

Okano²,

Gaag

et al. 1993

J Mater Sci: Mater Med

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show abstract

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Wright Mills: sociologia

Abstract: então devemos ter a certeza de que alguém vai publicar ós artigos do colega Muhr, de O Estado de S. Paulo, da Gazeta Mercantil, as cartas à Redação, as observações etc., para ler Muhr em lugar de Parkinson e ter a lembrança de um professor que faz falta.

Cited by 1 publication

References 0 publications

Heparin-containing block copolymers

Heparin-containing block copolymers

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