The author has dealt with the principal matters related with the design of a photoelectrochemical cell and the factors that affect efficient production of electricity by photocatalytic degradation of (principally) organic and (secondarily) inorganic waste materials.
Geopolymers belong to the family of inorganic polymers, which are macromolecules, linked by covalent bonds having –Si O M O– backbone, where M denotes principally aluminium and secondarily other metals such as iron (Davidovits 1988).
All patients underwent operative treatment primarily and secondarily.
European freshwater mussels (Fig. 1) are threatened by the presence of non-native ones, principally zebra mussel and secondarily Chinese pond mussel (Cappelletti et al. 2009).
Now, a concrete term signifies more things than the corresponding abstract term, e.g., esse signifies more things than essence, for essence signifies only the form, whereas esse signifies the form principally and the subject secondarily.
Malacostracans are primarily swimmers and secondarily walkers, clingers, and burrowers.
Such a coating requires primarily impermeability and secondarily homogenous and clean microstructure.
The vein-filling minerals are primarily calcite and secondarily laumontite/quartz.
In contrast, human activities increase atmospheric CO2 levels primarily through the burning of fossil fuels (principally oil and coal, and secondarily natural gas, for use in transportation, heating, and the production of electricity) and through the production of cement.
He spent most of his time working on problems related to industrial chemistry, principally those related to batteries, and, secondarily, those related to mass production of cylinders and discs.
Alignment selection was based primarily on length and secondarily on identity.
