61.   However, software control is primarily an administrative problem in which the exact identity of a module and its relationships to other modules are more important than its content.

62.   Patients with active colitis were colonised less frequently and with lower numbers of E coli than were control patients.

63.   Positive controls were sections of normal formalin fixed wax embedded human liver as liver is known to express all the enzymes being studied.

64.   Sex ratios were similar, but none of the UC patients smoked whereas six controls were current smokers.

65.   All polymerase chain reaction positive controls were positive.

66.   For example, the power controls can be so sensitive that heat can be regulated by degree.

67.   Consequently, frontier controls were necessary to ensure that cross-frontier trade in goods adhered to the various national requirements.

68.   However this evidence relates to the early stages of the reforms, when the market had hardly begun to operate and control was tight.

69.   Control can be difficult if there is a range of different tasks being undertaken at any one moment.

70.   A fundamental control is the degree of instability of the reacting system, or in our mechanical analogy, how far up the slope our ball is located.