The phrase "a one time sample" is correct and usable in written English.
It can be used to refer to a sample that is collected or used only once, without any intention of repetition.
Example: "The study required a one time sample of participants to gather initial data on their responses."
Alternatives: "a single sample" or "one-off sample".
Thus, although we only collected a one-time sample from each of 43 digesters, it may represent the properties of a bacterial community structure in a specific biogas digester.
The approach we undertook, by virtue of its design of repeated sampling, shed more light on the dynamic of the infection in the population to a cross-sectional approach which reflects a one-time sampling [ 22].
This generalized adaptive group sequential design allows one time sample size determination either before the start of or in the mid-course of a clinical study.
Because one time sampling may not adequately estimate fungal abundance and richness in the community, we combined the vegetation values and the two air sample values to give one index of fungal abundance from each site and one index of fungal richness from each site (Table 2).
We analyzed a limited one-time sample of foods purchased from supermarkets in only one geographic location, and, perhaps more importantly, did not evaluate foods as packaged, processed, or served in homes or restaurants.
In the analysis, a total of 1,098 cases and 1,090 controls that completed the interview and donated a one-time blood sample were included.
However, a study using a one-time urine sample reported that urinary isoflavones represented usual intakes of dietary isoflavone as measured by 24 h dietary recall in US adults (Chun et al, 2009).
Design A one-time fasting blood sample was obtained for MTHFR genotype (C677T and A1298C) determinations (n=433).
However, training and test data sets are independent of each other in every single split (or at least they are as independent of each other as they were in a one-time hold-out sample generated by the same splitting algorithm).
The JCUSH was a one-time stratified random sample telephone survey of non-institutionalized adult (aged 18 or greater) residents of Canada (N = 3505) and the U.S. (N = 5183) conducted between November 2002 and June 2003.
Discrete, one-time sampling may not only fail to record some seasonally occurring forms, but also give little information about changes in the species composition, including local extinction, over time as a consequence of natural events or human interference.
