The present perfect simple is concerned with change and looks at completed actions - often counting quantity by using how much or how many.
These shifts could be concerned with changes in molecular symmetry and electronic structure upon complex formation (Abeer et al. 2013).
Although we did not see such poleward expansions within our imager FOV, this could be because we focused on several minutes around the SC onset times, whereas they were concerned with changes over longer time scales.
20– 23 The investigations reported here are concerned with changes in the properties of the lipid phase of the biological membrane (erythrocytes) and model lipid membranes (liposomes) induced by extracts from apple, chokeberry, and strawberry, with reference to their location within the membrane.
Mr Garrioch shows how Paris worked as a community, or rather a collection of communities, and his vivid viewpoint is from the street, not the court.Both authors are concerned with change, conflict and breakdown, yet their intellectual starting-points differ.
Chinese scholars who are concerned with change in social structures in contemporary China use a number of labels and terms, ranging from 阶级(class), 阶层 (stratum) and 群体 (social group).
This study is concerned with the changes of the floor surface topography in the early stage of repetitive wear rubbings and the relationships between slip resistance properties and operationally defined geometric characteristics of the floor surfaces.
The current study is concerned with the changes of prevalence of probable anxiety, depression and PTSD among children 6 months and 12 months after the Sichuan earthquake in China and the effects of the earthquake on children's mental health problems.
