The phrase "an essential element required" is correct and usable in written English.
It can be used when discussing something that is necessary or fundamental for a particular purpose or outcome.
Example: "In order to complete the project successfully, an essential element required is a clear understanding of the client's needs."
Alternatives: "a necessary component needed" or "a vital factor demanded".
Copper (Cu) is an essential element required in many biological processes including cellular growth and development.
However, zinc is an essential element required for the growth of plants, animals and humans (Sengil and Ozacar 2009).
Zinc is an essential element required for the function of more than 300 enzymes spanning all classes.
Iron is an essential element required by microorganisms for many biological processes, yet its supply in a form of free, non-bound iron, is limited in the host environment.
It is an essential element required for the functioning of many enzymes and involved in oxidative stress protection, as well as in the formation of connective tissue and bone.
Consistent with the scanning deletion analysis described above, these results suggest that there is no unique essential element required to sustain tsBN67-cell proliferation but that there is a size dependency in Basic region function.
The base vector was pCB301 which is a 3.5 kb derivative of pBin19 created by combining the minimal essential elements required for a binary plant transformation vector [ 35].
Autograft has been considered the golden standard because it possesses all three of the essential elements required for an optimal bone graft [ 5], but is associated with morbidity at the donor site and is limited in supply [ 6].
The HCV 3'X region, as well as a minimal poly(U/UC) sequence are known to be essential elements required for genome replication [28], [29].
The essential elements required in relatively large quantities for adequate growth are called macroelements.
Among the essential elements required are specialized human resources that can build multidisciplinary work groups to help in these changes.
