Storage after opening:
This is storage for bottles of table wine that have been opened but not completely consumed. There are many methods for prolonging the life of opened table wines but even the best can only slow the degradation of the wine. These methods are for still table wines. Sparkling wines and fortified dessert wines have different characteristics and requirements.
Gas Systems: Sparging the bottle with a gas (nitrogen or argon) can be very effective but it is expensive and I've never known anyone who actually used a gas system over a long period of time. They just seem to ultimately be more trouble than they are worth. If you do elect to try such a system, stay away from carbon dioxide since it will mix into solution with the wine.
Vacu-vin: An item came on the market a few years ago called a Vacu-vin. This consists of rubber bottle stoppers that hold a weak vacuum created by a hand pump that comes with the system. While some people swear by them, there is a consistent complaint that wines treated with a Vacu-vin seem 'stripped' of aromas and flavor. They actually create a lower pressure environment instead of an actual vacuum. This means they don't remove all the oxygen and oxidation of the wine will still occur.
Half bottles, marbles and progressive carafes: These are all ways of limiting the amount of air in contact with the wine. The concept is good if you move quickly and refrigerate the remaining wine.