Abstract: The invention provides a method of enhancing the action of a pharmaceutical agent selected from the group consisting of the anti-infective agents, the group comprising of the antimicrobial agents, the anthelmintic agents and the anti-ectoparasitic agents, but excluding coal tar solution and H1-antagonist antihistamines, and from the group consisting of the CPNS agents selected from the group of compounds acting on the central or peripheral nervous system, but excluding coal tar solution and H1-antagonist antihistamines and also excluding anti-inflammatory, analgesic and antipyretic agents and also provides an enhanced method for the administration of a nucleic acid substance to the cells of an animal, a plant or a micro-organism.

Abstract: The invention provides a method of enhancing the action of a pharmaceutical agent selected from the group consisting of the anti-infective agents, the group comprising of the antimicrobial agents, the anthelmintic agents and the anti-ectoparasitic agents, but excluding coal tar solution and H1-antagonist antihistamines, and from the group consisting of the CPNS agents selected from the group of compounds acting on the central or peripheral nervous system, but excluding coal tar solution and H1-antagonist antihistamines and also excluding anti-inflammatory, analgesic and antipyretic agents and also provides an enhanced method for the administration of a nucleic acid substance to the cells of an animal, a plant or a micro-organism.

Abstract: The invention provides a method of enhancing the action of a pharmaceutical agent selected from the group consisting of the anti-infective agents, the group comprising of the antimicrobial agents, the anthelmintic agents and the anti-ectoparasitic agents, but excluding coal tar solution and H1-antagonist antihistamines, and from the group consisting of the CPNS agents selected from the group of compounds acting on the central or peripheral nervous system, but excluding coal tar solution and H1-antagonist antihistamines and also excluding anti-inflammatory, analgesic and antipyretic agents and also provides an enhanced method for the administration of a nucleic acid substance to the cells of an animal, a plant or a micro-organism.

Abstract: A geotechnical barrier includes a first barrier layer; a second barrier layer overlying the first barrier layer and spaced therefrom, the first and second barrier layers defining, at least in part, a fluid passageway having an inlet and an outlet; and fluid displacement means for displacing a fluid through said fluid passageway from the inlet to the outlet. The invention extends to method for constructing and operating a geotechnical barrier and to a geosynthetic barrier and a geocomposite geosynthetic barrier.

Abstract: Administration mediums comprising solutions of nitrous oxide in water, alcohols, ethers or oils, and optionally including essential fatty acids or C1-C6 alkyl esters thereof enhance the action of analgesic, anti-inflammatory and anti-pyretic drugs. The drugs may be combined with the medium into a pharmaceutical composition or may be taken orally by swallowing the drug with the aid of the medium.