N-Heterocyclic derivatives of the formula : are described herein, as well as other N-heterocycles, as inhibitors of nitric oxide synthase. The thin-film interference filter structure includes a thermally tunable layer having a thermally tunable optical characteristic such that a range of wavelength-dependent resonant optical responses of the thermally tunable layer are induced by a corresponding range of thermal conditions of the thermally tunable layer. A state is stored in accordance with the presence or the absence of the covering insulating film on the surface of the electrode at each memory cell position. The walls comprise a flat top surface with a plurality of alignment openings therein. The elastic strands, first nonwoven web and second nonwoven web form a laminate that is stretchable and permeable to liquid.