Bags are filled with nitrogen, either pure or mixed with carbon dioxide, not so much to keep them inflated (that could be done with air), but to displace the oxygen, which would cause the oils to go rancid.
Carbon dioxide is also used sometimes,
Nitrogen[N] is put in Crisps bags to keep them fresh. It is Oxygen which spoils the crips by oxidising them and making any fats or oils go rancid and water vapour in air makes them go soggy. So oxygen and water vapour which is about 20% of the air is removed and the remaining 80% is mostly Nitrogen, which does not react with the crisps.
It used to be nitrogen, but in the last few years the crisps manufacturers have started matching their production to their sales, so the chips sell before they get stale.
air
To keep a crisp packet fresh you need to store it in a biscuit tin or something similar to that that won't allow oxygen in and turn the crisps stale
Nirogen
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It extracts more air from the compartment leaving vegetables more fresh.
there are several important factors in keeping apple crisps, or infact many other crisps, crispy. If making them yourselves ensure the oven is at a high enough temperature, if cooked to slowly or not enough the crisp will -unlike it should- fail to crisp. This is due to the mafipulation process of high molecular re-construction weight distribution not being fully allowed to develop. You may fall in the trap of not wanting the burn the vagetable or fruit crisps, however, this should not be a problem. The moisture in the crisps, and in the oil needed to cook with them will ensure they stay un blackened and uneffected in taste by the extreme heat. If buying apple crisps which are not crispy, or loose there crisp after a while, ensure you are keeping them in a cool, dry place, and or ensure they are not dormont (too hot or too cold can cause the bacteria placement within any food to become "dormont" this is why frozen or cooked food will last longer).
Yes, you should refrigerate uncooked cabbage to avoid bacterial contamination. Refrigerating will also keep it fresh and crisp.
By not using it
The sent packets will increase according to the sent packets. And the relationship will become less. When it is over 1100 the number of received packets will decrease when the sent packets keep increasing.
It is used to keep track of the data packets being sent to and from hosts.
TFTP needs to keep a copy of only the last packet it has sent, since the acknowledgement mechanism it implements guarantees that all the previous packets have been received, and thus will not need to be retransmitted.
to keep it fresh longer you have to put it in the refrigarator
your maw