"recommend to conclude" is correct and usable in written English.
You might use it when making a suggestion about how to bring something to an end. For example, "Given the current circumstances, I recommend to conclude the meeting at this time."
Finally, I would like to conclude by recommending to any conference-goer (just to make the conference that little bit more interesting): take dibs amongst your friends as to who's going to win the Young Investigators' Award.
To conclude, recommended advances such as multithread channels are discussed along with potential applications.
To conclude, recommended schedules for the follow-up of individual patients were primarily determined by their risk profile, but final arrangements for the delivery of those schedules (i.e. by whom and where) were influenced by many other considerations.
In our study, combined analysis of the results from all trials using the recommended doses led us to conclude that anti-TNFα drugs (considered as a therapeutic group) show an effect significantly superior to that of control treatments.
To conclude, we recommend that sufficient efforts should be made to bring forth a standard measure to define poor households and conduct the targeted interventions among the poor sections of the society, addressing obstacles in the utilization of health care services irrespective of the state level average performance.
The ultimate aim is to conclude on recommended multimodal training, in light of contemporary trends in the design of exergaming interventions.
Again it is concluded that it is recommended to add sleep modes and cell zooming into the networks.
Finally, the chapter concludes that, it is recommended to apply this model or similar models in order to validate the policy recommendations based on other methods in order to prevent the selection of sub-optimal policy strategies.
"Due to the associations between diacetyl, bronchiolitis obliterans and other severe respiratory diseases observed in workers," the study concluded, "urgent action is recommended to further evaluate this potentially widespread exposure via flavored e-cigarettes".
