The present disclosure relates to a polymer material comprising mesopores extending between melamine-formaldehyde co-polymer nano-particles and wherein micropores extend within the co-polymer nano-particles, methods of producing the same and uses thereof. Combination therapy with other cardiovascular agents is also claimed. Then, a backing layer blank is positioned over the blister sheet blank to retain the medicaments in the blisters and to prevent contamination. The method further includes removing the second and fourth insulators by a first etching so that the second and fourth insulators partially remain between the selection transistors. The method further comprises encoding each map of features extracted as neural spikes. The insulator is planarized while the hard mask is used as the polishing stop layer.