The phrase "and is not achieved" is correct and usable in written English.
It can be used to indicate that a certain goal or outcome has not been reached or accomplished.
Example: "The desired level of productivity is set high, but it is clear that it and is not achieved by the current team."
Alternatives: "and remains unachieved" or "and has not been accomplished".
Brilliant writing for newspapers has a plus factor which is hard to define and is not achieved by many.
As you can imagine, maintaining healthy sleep is a lifestyle and is not achieved through a quick fix.
Moreover, the constant μ̄ is optimal and is not achieved since the Sobolev embedding is not compact even locally in any neighborhood of zero.
It has its heart set on reaching 24 teams by 2020, although joining US football's top table is by invitation only and is not achieved by success on the field, rather by a whole host of criteria.
Airship designers eventually abandoned the idea of carrying passengers and embraced the notion of carrying cargo, which is achieved only inefficiently by rail, roads, and sea, and isn't achieved at all in remote areas.
The reform that ended this unsettling state of affairs was imported from Australia, and was not achieved in the United States until the eighteen-nineties.
Completion of whole body regeneration in cydippid larvae of M. leidyi was only successful under high prey conditions and was not achieved by more than 25%.
Radiolabeling of NODAGA-compounds with 44Sc, however, proved to be more challenging and was not achieved reproducibly at high specific activity.
The gas chromatographic separation of 2-phosphoglycerate and 3-phosphoglycerate is technically demanding and was not achieved during this study.
The success of this fitting justified a posteriori the choice of an ellipsoidal shape and was not achieved starting from a spherical cell.
Moreover, we observed that charge mobilites greater than 0.1 cm/(Vs) required fusion of the nanocrystal solid and was not achieved upon ligand desorption alone.
