Sentence examples for by difficulties of sample from inspiring English sources
Tropical infectious diseases diagnosis and surveillance are often hampered by difficulties of sample collection and transportation.
The challenges come from compartmentation of metabolites, from dilution of tracer by endogenous pools, and from the difficulty of sampling relevant pools.
Among the studies available, only a few of them directly measured the flux of organic carbon transported by tidal water due to the difficulty of sampling water flow and constituent concentrations in tidal channels if the estuary is multi-channeled and over-flooded in spring tide (Dankers et al. 1984; Dame et al. 1986; Childers et al. 2000).
Ecological studies in tropical forests have long been plagued by difficulties associated with sampling the crowns of large canopy trees and large inaccessible regions, such as the Amazon basin.
Many studies are biased by the sample chosen and by the difficulties of diagnosing CH by mailed questionnaires or telephone interviews.
Unlike studies of marine mammals that use terrestrial habitat, cetacean diet studies are further constrained by difficulty in obtaining samples.
37 We have compensated for the difficulty of estimation of sample size in this field by leveraging our capacity for scalable, low-cost recruitment.
The significant potential of tissue-based proteomic biomarker studies can be restricted by difficulties in accessing tissue samples in optimal fresh-frozen form.
First, systematic KRAS genotyping in MCRC patients might be hampered in the future, at least for some patients, by the difficulty of obtaining tumour samples suitable for molecular analyses (and this might limit the use of anti-EGFR antibodies).
