Education research has frequently examined effective teacher and student, but has ignored effective communication skills.
Armstrong has never failed a drug test, however, and he may well be the most frequently examined athlete in the history of sports.
Centrifugation has been used in countless of physiological studies to separate zooxanthellae from host tissues, but its efficiency has been less frequently examined.
Although women-headed households are frequently examined in industrialized countries, studies fail to understand them in lower-income settings and varying economic and social structures.
The situation in which antibodies are raised against different epitopes of the same hapten but have some common recognition or binding features has been less frequently examined.
Private forest owners' involvement in forest management has been frequently examined through the attitudes, values, beliefs, objectives and motivations associated with owning and managing forestland.
In literatures, a small amount (≤ 3 at%) of Al can be frequently examined, while Nb aluminides are usually not formed in this case.
Such models have "artificial boundaries designed to provide structure to a complex record and, rather than being conceived of as permanent or real, should be frequently examined and revised (Corbey and Roebroeks, 2001)" (Monnier, 2006).
Most of these studies investigated more general endpoints such as mortality, reproduction, growth, and food consumption over time, and less frequently examined molecular endpoints such as enzyme activity or gene expression.
Plant community dynamics and patterns are frequently examined in relation to herbivory, but most patterns are discussed either in a single dimension, or across species, but at small spatial scales within individual communities.
Clothing researchers frequently examined evaluative criteria (Eckman et al. 1990).
