Many well-known threats to internal validity do not apply to a non-experimental study, e.g., history, maturation, instrumentation change or interaction of treatment and construct.
Context changes or user interactions are events that can trigger dynamic reconfigurations of the model (selecting and deselecting features).
Second, the propensity to cause disease may be determined by subtle genetic changes or complex interactions between many core gene loci [24].
A Medline search failed to find any report of clear manic episode triggered by recommended dose of sibutramine medication, in person without previous history of mood disorders, organic brain changes or drug interactions.
We report the first case of a patient with clear manic episode, after treatment with recommended dose of sibutramine, without previous history of mood disorders, organic changes or drug interactions, that was followed by episode of depression.
The contractile force of single, in vitro cultured human myofibers can be measured (Smith et al., 2014), though such a system is limited by its inability to investigate biochemical changes or cell matrix interactions that can be critical in different pathologies including muscle dystrophies and wasting disorders (Ciciliot et al., 2013).
NMR analysis is performed on this construct and its variants, in milieu of various types; changes in position or intensity of peaks (bottom right) indicate changes in structure or interactions of the FG motifs.
We've chosen not to want to understand the complexity of climate change or the interactions between very real human impacts and very real natural cycles.
They function by influencing chromatin contacts through structural histone changes or influencing electrostatic interactions, and by recruiting non-histone proteins to chromatin [ 41].
This heterogeneity may reflect simple environmental gradients (e.g., distance from pollution sources, salinity change, and sediment type differences) or more complex processes such as seasonal successional changes or complex ecological interactions.
