Ethiopia was one of the first countries to embrace the concepts of scale up for impact (SUFI).
The concept of scaling up has often been too one-dimensional.
This has led to the concept of "scaling up" which requires the systematic development and expansion of intervention services to progressively address established healthcare needs [ 18- 20].
The concept of scaling up is different from routine adoption as it involves an explicit intent to expand the reach of an intervention to new settings or target groups.
This concept of scale-up also applies to utilization of a new reactant, catalyst, additive, or other raw material.
Other avenues for future research include the potential of CL concepts to scale up and become a credible alternative to traditional logistics services and under which conditions this can take place.
This is usually calculated by momentum balance equations with simplifications such as a constant pressure drop for the liquid phase and no interaction between gas and solid phases (M. Kraume, P. Zehner, Concept for scale-up of solids suspension in stirred tanks, Can. J. Chem. Eng. 80 (2002) 674 680; E. Camarasa, A hydrodynamic model for air-lift reactors, Chem.
Various definitions of scaling-up exist, relating to complexity, impact and interactions with other organisations, but the concept of scaling-up as expansion of coverage is the most common [ 15, 23].
We then reviewed the 15 identified sources to: (1) identify differences and shared themes and concepts around scaling up; and (2) explore whether a synthesis of the frameworks was possible to develop a core set of domains.
Melody, however, antedates the concept of scale.
'Bang!' 'Whoosh!' I found that I was very interested in the concept of scale.
