The comparative rarity, marginalisation and illicit nature of injecting drug use impede the construction of a sampling frame, making the representativeness of our sample impossible to measure.
The Home Office has had to concede that the scheme must not be used to impede the free movement of EU citizens.
Javid also said he would be working with the home secretary, Theresa May, to ensure that Ripa could not be used to impede the work of journalists.
These were allowing a zone defense — a staple of European and amateur American basketball — instead of requiring constant man-to-man coverage; and the limits placed on "hand-checking," a defensive action used to impede offensive flow.
Furthermore, the limited magnetic property and inability to escape from the reticuloendothelial system (RES) of the used nanoparticles impede their further advancement.
Active protection is a novel technique used to impede corrosion achieved by employing the CFRP wrap as the anode of the impressed current cathodic protection (ICCP).
The modifications to the defect formation energies induced by these dopants in Cr2O3 can be used to impede formation of undesirable defects, thus enhancing ionic conductivity for oxygenation catalysis.
Hankey believed that oil should not just be denied to an invader, but used to impede him.
This is a clear-cut example of how the threat of federal enforcement has been used to impede state implementation of medical marijuana laws.
Freedom of association and assembly are also guaranteed under the law, although in practice the denial of permits for public assembly has occasionally been used to impede political demonstrations.
