Water, forests, fisheries, biodiversity, oceans and the atmosphere are all, in important ways, common pool resources; it is difficult to exclude people from using them, but some of that usage depletes their availability to others.
However, it is difficult to exclude the presence of any thin oxide layer surrounding the Si-ncs which is necessary to saturate the dangling bonds on the surface or surrounding of the Si-ncs.
Thus, as the neutral Na layer and E S layers may share a common origin in the atmospheric wind system, it is difficult to exclude E S layer influence on the sodium distribution.
Popular techniques used in cryoEM SPA such as multivariate statistical analysis (MSA) (Van Heel and Frank 1981; Frank et al. 1982; Van Heel 1984) can be tricky to apply to SPT, because the missing wedge, which is often the strongest feature, is difficult to exclude when the particles have already been rotated for alignment.
However, considering the number of observations (77), the number of analysed terms (20), the number of lags included in the transfer functions (12) and seasonal adjustments, it is difficult to exclude the possibility that the low number of statistically significant connections at specific lags may result from statistical error.
However, it is difficult to exclude the possibility a very few cells become progenitor cells.
Because this experiment was run in an open water system, it is difficult to exclude the first case.
However, from the results shown in nontransfected cells, it is difficult to exclude the scenario in which STIM2 also contributes to endogenous SOCE in neurons.
Although it is difficult to exclude TB exposure in high TB burden countries, none of the community controls (EC) gave a history of recent exposure to a tuberculosis patient and were considered unexposed.
Since the recently activated effector T cells may also express CD25 transiently, it is difficult to exclude the possibility that the mAb related to depletion of activated T cells.
However, for all tumor-only methods including CNNLOH Quantifier it is difficult to exclude CNNLOH signals due to regions with homozygous markers in the constitutive DNA in pure tumor samples.
