"of great aid" is correct and usable in written English.
You can use it to refer to something that is helpful in achieving a goal, or to describe someone or something that is helpful. For example, "The software was of great aid in providing the necessary data for our project."
"Cuba has vast intelligence sources which could be of great aid".
Perfusion-CT scans are of great aid in the assessment of microvascular transplant perfusion in the face, when adequate perfusion is not verifiable clinically or by O2-probe because of removal or malfunction.
Therefore, further studies to establish if the serum levels of AR during treatment are useful for predicting chemosensitivity of patients, will be of great aid.
Simple, computational models of evolution explicitly separating genotype and phenotype might be of great aid in bridging the gap between phenomenological theories and experimental observations.
Proponents of greater aid for the rebels have suggested that arms and money be sent through Idris, to solidify his command.
But even given the prospect of greater aid, several of Colombia's neighbors are resisting an American approach that they say relies too heavily on the military and could involve them in war.
Democrats, trying to shift the political dialogue from security to economic issues, repeatedly pushed for consideration of greater aid to people who were using up their 26 weeks of state aid.
Whether it be evolution, fossil finds, or any other area of science, another great aid in making a topic relevant is to cite current finds, especially those that are significant to the material being covered.
More specifically, they create platforms for stronger advocacy for children, contribute to the development and transformation of societies, and lead to greater aid effectiveness in the context of the Paris Declaration and the Accra Agenda for Action.
For 'A Little Night Music,' it gives some air and breadth, and that in and of itself is a great aid.
Therefore, the design of accurate automated systems for detection and classification of electroencephalogram (EEG) signals of epileptic patients is a great aid in the diagnosis process.
