Sentence examples for samples in urban from inspiring English sources
Similarly, in Spain, the percentage of positive HAV samples in urban sewage fell from 57.4%to3.1%1% in 5 10 years, due to the general improvement in sanitation [ 20, 24].
We measured urinary concentrations of total (free plus conjugated) species of BPA in spot samples in urban (N = 30) and rural (N = 30) Egyptian girls, and compared these concentrations to preexisting data from age-matched American girls (N = 47) from the U.S. National Health and Nutrition Examination Survey NHANESS).
In Spain, studies from low endemicity areas revealed relatively low percentages of HAV-positive samples in urban wastewaters in recent years, ranging from 3.1% to 11% [ 13, 20], whereas studies from high/intermediate-endemicity areas yielded considerably higher percentages of HAV-positive sewage samples, up to 88% [ 21, 22].
LOD and LOQ indicated possible application of these devices to sampling in urban intermediate, urban background and suburban areas.
Trained interviewers selected households by random cluster sampling in urban (n=1,226) and rural (n=1,103) populations.
Cluster sampling was based on block sampling in urban areas and family charts in rural areas.
Only the Mongolian, Hui, Uighur, Zhuang, and Korean minorities were sampled in urban and rural areas.
A uniform multistage sampling strategy was adopted in all states, with separate sampling in urban and rural areas.
Secondly, probability sampling in urban areas was conducted by selecting primary sampling units (blocks); then a sample of the required number of households was selected in each block with 800 to 1,000 households.
A large prescription sample in urban community health care institutions across China has shown that the percentages of injection prescription were 35.4%, 32.4%, and 33.9% in 2007, 2008, and 2009, respectively [ 4].
The control population of 50 subjects was sampled in urban areas of Peru: Trujillo (n = 42) and Lima (n = 4) on the coast, and Tarapoto city (n = 4), in the Amazon.
