They work because the holes in the sieve will pass H2O but are too small to give passage to sodium and chloride ions (the components of salt), because these electrically charged species are accompanied by retinues of water molecules, which are attracted to them by their charges, and are thus, effectively, much larger than a lone water molecule is.
"What would make mother call me so early?" was the first thought my brain gave passage to.
Oral health care is one of the major concerns around the globe as minor dental problems are giving passage to bigger and incurable forms.
In some cases, the fragments of these early works are clearly identified in the later lives, but in other cases we may suspect that they are the source of a given passage without being able to be certain.
In the past several days, the news media have widely reported that Mr. Zardari believes Mr. Musharraf should be given "safe passage" to leave the country.
In previous deals between the government and rebels, insurgents have been given safe passage to the opposition-held province of Idlib.
And America's commanding general in Afghanistan, David Petraeus, has said that NATO has given safe passage to senior insurgents, allowing them to travel to Kabul for talks with the government.The Taliban have denied that.
According to a Pakistani military official, the Pakistanis would first have to resolve where Qaeda fighters would go and whether they might be given safe passage to Yemen or another location.
This precedent offers an example of how, today, refugees might be given safe passage to Europe through a humanitarian visa or refugee travel document scheme to prevent them having to make dangerous journeys.
Mr Assange remains in the Ecuadorean embassy in London, where he has taken refuge, but the UK has said he will not be given safe passage to the Latin American country.
