Saturday's uncertain explanation by the G4S chief executive, Nick Buckles, underlined his company's incompetence in not being able to supply 10,000 security staff despite having two years and £284m to play around with. "It was a daunting task to supply that number of staff in a short timescale," he pleaded.
Approximately half of the women did not receive any or only a very uncertain explanation for the stillbirth.
Sarasota, variously spelled Sara Zota, Sarazota, and Sarasote, appeared on maps in the 1700s, but the origin of the place-name is uncertain; one explanation is that it may have been derived from a Spanish term meaning "a place of dancing".
It is uncertain which explanation is more likely.
Hence, science journalists have an important role in the communication process about nanotechnology because they have to deal with contradictory information or uncertain scientific explanations.
Although the physical reason for the change in Tafel slope from 110 to 63 mV/dec is currently uncertain, a possible explanation might lie in increased active surface sites in SW Ni Ni3S2/NF due to the presence of spider web-like Ni-nanosheets.
We remain uncertain about the explanation for these discrepancies which may represent inter-species differences of unknown aetiology.
However, whether the system works in this way is currently uncertain, and this explanation is not what was originally proposed in the papers mentioned earlier (Frederich et al., 1995; Keesey and Hirvonen, 1997; Friedman, 1998; Friedman and Halaas, 1998; Cowley et al., 1999; Cone, 1999; Schwartz et al., 2000).
Although the reason(s) for this are uncertain, a possible explanation is that the breast secretes a given amount of each protein daily, with greater milk volume during the 2 month lactation period compared to BL or W periods leading to a lower protein concentration.
The significance of the remaining candidate genes for which no BAC hit was found remains uncertain and potential explanations will be addressed in the discussion.
The explanation is uncertain.
