The phrase "and it is asserted" is correct and usable in written English.
You can use it when you want to indicate that a statement or claim is being made or emphasized, often in a formal or academic context.
Example: "The theory is widely accepted, and it is asserted that further research is necessary to validate the findings."
Alternatives: "it is claimed" or "it is stated".
The panel also tried to address why girls were less likely to study subjects such as mathematics and science, and it was asserted that it depended on whether their father supported them.
The reaction mechanism of the two POMs was determined and it was asserted that the divergent redox behavior is caused by a ligand exchange which takes place during the measurement.
The MFIcc operon was called 'recently "invented"' and it was asserted that organisms simultaneously possessing both the MFIcc operon and cytochrome oxidase A2 were unrelated, and widespread lateral transfer was assumed [ 139].
Compare (9) and (10): Though the existence of the oil lamp is expressed in both (9) and (10), it is asserted in the latter and entailed or even presupposed in the former.
In (7) 'It is raining' is used to assert that a state of affairs obtains (it's raining), and in (8) it is asserted that if that state of affairs obtains, so does another (the streets being wet).
On page 493 of the nine-hundred-and-seventy-six-page document, it is asserted, incorrectly, that the Himalayan glaciers could disappear by 2035.
The austerity medicine must be working, it is asserted, and a bright new dawn beckons just as soon as the current recession in the eurozone clears.
His nephew Robert Louis described it as "the noblest of all extant deep-sea lights" and according to the Northern Lighthouse Board it is "asserted by some that Skerryvore is the world's most graceful lighthouse".
If it is asserted that a society functions adequately only if necessary needs are satisfied, and if it is further asserted that ritual does satisfy that need, then scholars cannot conclude that, therefore, ritual is present in that society without committing the logical fallacy of affirming the consequent.
