The phrase "aid to maintain" is correct and usable in written English.
It can be used when discussing support or assistance provided to help sustain or keep something in a certain condition.
Example: "The organization provides financial aid to maintain the community center's facilities."
Alternatives: "assistance to uphold" or "support to preserve".
Proteins often contain disulfides, which aid to maintain their tertiary structure and therefore must remain intact.
Philippine Airlines, which was nearly shut down in 1998 and has requested state aid to maintain its insurance, is nevertheless optimistic about its prospects.
Taliban fighters have in the past attacked international aid groups in the country, accusing them of trying to introduce "un-Islamic" values "Pakistan should reject this aid to maintain sovereignty and independence," a Taliban spokesman told the Associated Press.
Many protocols are available which will aid to maintain and propagate important orchid species for further conservation purposes.
It would allow groups receiving such aid to maintain much of their religious flavor but would prohibit them from including proselytization or worship in their publicly funded programs.
The results reported here demonstrate that IL-2 signal in the early priming stage not only drove the CD8+ T-cell differentiation but also aid to maintain effector function in vivo.
The PAS (pôle autonomie santé) project offers with L'ETAPE a free municipal public service dedicated to supporting the population (older and/or handicapped people and their family or professional caregivers) in the choice and testing of technical and technological aids to maintain independent living.
Gerontologists suggest that the stuff elders choose to take with them when they leave their own homes, to move into communal housing, are powerful aids to maintain coherence and continuity of identity in this complex transition.
The Minnesota CPRU trial also used fridge magnets and birthday cards as memory aids to maintain motivation and adherence.
The glutathione reductase (GR) and thioredoxin reductase (TrxR) are important enzymes of the redox system that aid parasites to maintain an adequate intracellular redox environment.
Today, that graduate student, Sami Omar al-Hussayen, is on trial in a heavily guarded courtroom here, accused of plotting to aid and to maintain Islamic Web sites that promote jihad.
