While it is difficult to compare note types between individuals since the four males sing different note types, it is possible to detect some similarities between birds that produce comparable note types.
For example, in a chemistry or math class, it is difficult to take notes on a computer as you will not be able to draw figures or equations quickly and easily.
Furthermore, though it is difficult to distinguish a note which is generating the sound from a lot of sticky notes in front of a bulletin board, it is easy to recognize with adequate amount of change of visual stimulation, because human eyes have high spatial resolution than that of ears [8],[9].
However, it is necessary to note that it is difficult to analyze the abstracts in a thorough fashion due to limited word count.
60 However, it is important to note that it is difficult to discern whether these adverse effects were directly caused by emtricitabine or the coadministered antiretroviral agents.
Although it was initially proposed that the ribosomes were somehow "frozen" on the mRNA, it is important to note that it is difficult to discriminate experimentally between different potential post-initiation mechanisms, such as elongation inhibition, premature ribosome dissociation ("ribosome drop-off") or normal elongation but with nascent polypeptide degradation.
It is important to note that it is difficult to obtain quantitative data on airborne transmission in ferrets to compare efficiency of transmission between human and avian viruses, in part due to animal ethics considerations in relation to the required group size.
For those who have yet to hear how much their insurance will cover, it is difficult to calculate casualty losses, he noted.
"Without longer-term measures such as income, health, or life satisfaction," they note, "it is difficult to fully interpret our results".
With respect to this material, it must be noted that it is difficult to find its analogy in traditional metal machining because of its non-homogenous and anisotropic features.
