Contingent being

Forced ventilation to limit hazardous gas concentrations in the event of a spill or release (the electrical area classification of the area may be contingent on the use of forced ventilation)... 

The primary event may be contingent not only upon the pollutant but also upon its concentration (78) because of a competition for holes between the adsorbed pollutant and basic surface OH groups (Fig. 1) (79). 

The old man sighed. If possible I would certainly do that, but prediction is not so predictable, paradoxical as that seems. I would do my best and my fee would be contingent on results. ... 

Patients with infectious venereal diseases are also more dangerous to others, and are more demonstrably so, than are mental patients. Nevertheless, physicians have no powers to confine them, let alone forcibly treat them. Such persons are free to infect anyone willing to engage in a sexual act with them and, according to the most up-to-date medical-ethical opinion, Access to treatment for [women with] infertility should no longer be contingent on HIV status.This despite the fact that the HIV virus is transmitted from the mother to the fetus. 

Flow capacities, velocities and slopes of sewer lines should be contingent on the grades available at the plant site. The flat grades necessary at most plant sites will be a determining factor in the slope... 

Differential Incorporation into the Ice Structure. Anions and cations are incorporated into the ice structure at different rates ue, they have different distribution coeflBcients see Impurity Distribution in the Ice). Differential incorporation may be contingent on differential adsorption as the initial step, but lattice as well as surface energy changes must be taken into account. Costa Ribeiro (32) suggested differential carrier transfer rates across the phase boundary as a source of the thermodielectric effect. 

Biodistribution studies using PET can be imagined in which a positron emitter is used to label vectors (either viral or nonviral) or the nucleic acid. Such an approach will be contingent on efficient labeling that does not alter the various components. 

Broad acceptance of reactive adhesives will be contingent upon the development of systems with acceptable toxicity limits. Until then, applications will be limited to those in selected, high performance adhesive markets. However, their technology has important implications for adhesives of the future. 

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