Region exhaustive

Agreements with Singapore, Morocco, and Australia allow patent holders to contractually prevent parallel importation, while the FTAA mandates regional exhaustion within five years of signature, effectively excluding parallel imports from outside countries. These provisions will prohibit countries from importing lower-priced patented medicines sold in other countries. 

The droplets, which carry positive or negative charges depending on the sign of the applied potential, pass into and along a small evaporation region. Much of the excess of solvent vapor is allowed to pass to atmosphere or can be gently exhausted to waste. 

Control of nitrogen oxides ia aircraft exhaust is of increa sing concern because nitrogen oxides react with ozone ia the protective layer of atmosphere which exists ia the altitude region where supersonic aircraft operate. Research is under way to produce a new type of combustor which minimizes NO formation. It is an essential component of the advanced propulsion unit needed for a successflil supersonic transport fleet. 

Sulfur oxides resulting from fuel sulfur combustion often inhibit catalyst performance in Regions II, III, and a portion of Region IV (see Fig. 7) depending on the precious metals employed in the catalyst and on the air/fuel ratio. Monolithic catalysts generally recover performance when lower sulfur gasoline is used so the inhibition is temporary. Pd is more susceptible than Rh or Pt. The last is the most resistant. Pd-containing catalysts located in hotter exhaust stream locations, ie, close to the exhaust manifold, function with Httie sulfur inhibition (72—74). 

An alternative simple model for contaminant dilution of rooftop exhaust stacks is presented in Halitsky. This model combines a jet region specification for the upward exhaust movement with a more traditional Gaussian plume region controlled by atmospheric and building-generated turbulent dilution. 

FIGURE 10.79 Typical streamlines for the flow near the exhaust hood when there is (o) only suction. (b) some exhaust Bow, and (cl a large exhaust flow. (The flow is symmetrical about X = 0.) The shaded area represents the predicted effective capture region. 

In many CVD reactions for the deposition of nitrides, ammonia (NH3) is used as a source of nitrogen, rather than nitrogen. This is preferable from a thermodynamic standpoint but may present a problem in that any NH3 — either unreacted or present in the regions of furnace where the temperature is below its dissociation temperature— tends to combine with the HCl effluent gas and forms NH4CI, which may clog the exhaust line. 

It should be noted that Fig. 25 is not exhaustive, because the catastrophe map for general L in Fig. 2 of Ref. [14] shows a narrow band that is bounded below by the junction between regions III and IV of the L = 0 catastrophe map in Fig. 24 and above by a line of cusps, parametric on L. The nature of the monodromy in this region remains to be investigated. 

The present indications do not project a progressive scarcity of many minerals on a world wide scale. There are, however, some signs of regional and countrywise depletion. This is particularly true for the industrialised countries. There are examples of such countries which have shifted from being a net exporter to a net importer of many minerals. This situation is not necessarily due to the exhaustion of all exploitable deposits of the pertinent minerals. Rather, it is a consequence of the facts that some of the remaining deposits have not proved... 

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