This news was swiftly followed by the release of some 2011 data from a pilot scheme, conducted by China's health authorities, which suggest that barely 80% of China's urban tap water meets standards.China, which is desperately short of all sorts of water, faces considerable challenges with the little it has.
Sherwood, 52, has risen quickly through the ranks but has considerable challenges with ABC, the No. 4 broadcast network in the lucrative 18-to-49 18-to-49 18-to-49
High throughput analysis of chlamydia genome sequences may be the ultimate way of generating data for in-depth studies but there remain considerable challenges with this technology and sample quality [27].
Accompanying serosurveys can provide objective measures of protective immunity against vaccine-preventable diseases but pose considerable challenges with respect to specimen collection and preservation and community compliance.
For instance, sea-caged Atlantic salmon (Salmo salar), unable to escape sudden temperature bursts by vertical migration, may experience considerable challenges with temperature adaptation.
This comes at a time of considerable challenges with financial and other obstacles restricting progress in research to find a cure and improve the lives for people with diabetes.
There are considerable challenges with undertaking cohort studies of rectal bleeding in primary care, including recruitment of consecutive patients; eliciting full history of symptoms, signs and diagnostic tests; consenting 'low risk' patients to potentially unpleasant and invasive reference standard tests, and ensuring adequate follow-up of patients.
It is widely appreciated that genetic analyses on samples that contain degraded DNA in general, and human DNA in particular, are faced with the considerable challenge of contamination with exogenous sources of DNA (e.g. [43], [44]).
