The phrase "and it is speculated" is correct and usable in written English.
You can use it when discussing theories, assumptions, or conjectures about a particular topic or event.
Example: "The ancient ruins were discovered in a remote area, and it is speculated that they may belong to a previously unknown civilization."
Alternatives: "and it is believed" or "and it is thought".
Recovery of nitrate is approximately 70% during degradation of cyanuric acid and it is speculated that some volatile N-species is lost during the procedure.
Several reactions show the same activity pattern as the just mentioned oxygen exchange reactions and, it is speculated, therefore that a similar mechanism prevails.
Programmed cell death (PCD) is a fundamental process in both multicellular and unicellular organisms, and it is speculated to be one of the important factors contributing to the emergence of drug resistance.
It is shown that standard infrared finite predictions of QED are not altered and it is speculated that the good infrared properties of our construction may open the way to the calculation of previously uncalculable properties.
Entwistle is seen as her strongest rival inside the BBC, and it is speculated that if he does not get the top job he may inherit some of her old responsibilities.
Now the woman better known to headline writers as "DisGrace" or "First Shopper" is making a surprise entrance on to the political stage and, it is speculated, might be central to her autocratic husband's plan to build a dynasty.
The American Institute of Certified Public Accountants is warning smaller accounting firms that they could be barred from doing tax work for clients they also audit, and it is speculating that Mr. Volcker will bar Andersen from doing such work.
Thus, LA2144 might hydrolyse PAF through its PAF-AH activity, and it was speculated to be associated with the pulmonary hemorrhage during severe leptospirosis.
Notably, there is also an elevated expression of Kif4A in OSCC and it was speculated to be a key regulator for tumoral progression of human oral cancer16.
Graphite also promoted the anaerobic microbial transformation of nitrate with Fe(0), and it was speculated that electron-conducting graphene moieties were responsible for the improvement.
There were some questions about the delay in the ruling, and it was speculated that the N.H.L. was trying to determine if Smith was healthy enough to play.
