Exact(3)
"The post-1998 perisd is really difficult, partially because of Arctic warming and partly because of the change in SST measurements," says Kevin Cowtan, a computational scientist at the University of York in the United Kingdom, who co-authored the 2014 paper.
However, MRI evaluation of the quality of ligaments is difficult, partially due to the lack of a standard evaluation method.
Whereas the technique of homologous recombination in mESCs resulted in thousands of knock-out animals, the adaptation of this technique to hESCs is difficult, partially due to low homologous recombination efficiencies and targeting to non-expressed genes.
Similar(57)
Axel is the most difficult jump partially because of the forward entry, but mainly because it has an additional half-revolution.
For those traits that are controlled by large networks of genes where individual genes each have a minor effect, tracing these small signals to identify all the genes in the network is extremely difficult, which partially explains the "missing heritability" problem [ 10].
It's difficult to answer, partially due to regulation that opponents like EWG and the Campaign for Safe Cosmetics say is weak and outdated.
The exposure of the cyst may become difficult because the partially collapsed cyst would make the line of resection less obvious on laparoscopic examination [14].
The transition point when one approach outperforms the other is at this time difficult to determine, partially because convergence behavior is still a topic of study for the (MP) equation.
The appearance of a forefoot push-off mechanism in the hominin lineage has been difficult to identify, partially because researchers disagree over the use of the external skeletal morphology to differentiate metatarsophalangeal joint functional differences in extant great apes and humans.
Additionally, human passive immunotherapy trials using a combination of mAbs including 4E10 did not select for 4E10-resistant virus [28], [29], [30], and generation of resistant virus during in vitro passage is difficult and only partially successful [31].
Pseudoknots, however, are particularly difficult to prove, partially because of the limited knowledge of the sequence dependence of thermodynamics.
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