Performance types

The reac tor concepts described above can be utilized with any of the electron acceptor systems previously discussed, although some reactor types perform better with specific electron acceptors. For example, suspended growth systems are generally superior to fixed film systems when molecular oxygen is the electron acceptor because it is easier to supply oxygen to suspended growth systems. 

Compared more with tray type performance than other packing materials. Usually used in large diameter towers, above about 24-inch dia., but smaller to 10-inch dia. available. Metal only. 

Both the dipolymers and terpolymers have excellent resistance to hydrocarbons found m petroleum-based fuels and lubricants The 69 5% F terpolymer resists swellmg m blended fuels that contain metlianol and can be used in contact with certain phosphate ester-based hydraulic fluids Terpolymers are preferred for contact with aromatic solvents, although either type performs well in higher alcohols VDF-based elastomers dissolve m polar aprotic solvents such as ketones, esters, amides, and certam ethers These elastomers are therefore not suitable for contact with fluids that contain substantial amounts of these solvents because of excessive swell and consequent loss of mechanical properties... 

Performance relations, variables, 306 Propeller, 290 Scale up, 312, 314-317, 332 Turbines, 290, 291 Turbulence, 326 Types performance, 297 Mixing of liquids, 288... 

Turbine type performance, 178 Vertical in-line, 165, 175 Vertical multistage, 168 Vertical propeller, 169 Viscosity correction, 203-207 Pumps classes, 161... 

Historically, indicator electrodes have been metals which form a redox couple with the analyte, such as a Ag electrode for the determination of Ag", or a chemically inert metal which responds to the activity ratio of a soluble redox couple, such as a Pt electrode for Fe /Fe. Whereas simple indicator electrodes of this type perform well for the analysis of relatively pure samples, they are often subjwt to interferen< when apphed to complex samples such as those of biological origin. 

In summary, there are five types of analysis that can be used to assess the incremental cost-effectiveness of a drug or service. The type performed is generally predicated by the therapeutic area being evaluated, the research question being addressed and the clinical data available. For example, whereas a CBA (which converts clinical effect into monetary terms) may not be considered (for ethical reasons) to be the best choice for oncology or HIV-related evaluations, a CUA (which takes into account both quality of life and survival duration) may be considered appropriate. 

Resin type Performance Processing Cost Aerospace industry Automotive industry... 

D. J. Tannor I would like to point out that the Scherer-Fleming wavepacket interferometry experiment is very different from the Tannor-Rice pump-dump scheme, in that it exploits optical phase coherence of the laser light (optical phase coherence translates into electronic phase coherence between the wavepackets on different potential surfaces). However, there was a paragraph in the first paper of Tannor and Rice [7. Chem. Phys. 83, 5013 (1985), paragraph above Eq. (11)] that did in fact discuss the role of optical phase and suggested the possibility of experiments of the type performed by Scherer and Fleming. 

Test Battery type Performance Time on test (years)... 

Reboilers are heat exchangers that are used primarily to provide boilup for distillation and similar towers. All types perform partial vaporization of a stream flowing under natural or forced circulation... 

There is no clearcut dividing line between phase 2 and 3. (The latter usually includes well-controlled clinical trials of the type performed during phase 2, but in larger populations, under less-controlled conditions.) The sponsor of an IND should carefully determine the time when late phase 2 has been clearly passed (efficacy has been essentially demonstrated statistically to a sufficient degree of confidence) and the drug is ready for phase 3 development. At this point, with phase 3 plans defined, a meeting with FDA is appropriate. 

In a review of the performance of combinatorial chemicals alongside natural product extracts in several biochemical assays, there no comprehensive significant differences (Table 1). Natural products and combinatorial chemicals were screened in three different biochemical assays of current pharmaceutical relevance. In one assay, natural products resulted in more confirmed active samples than combinatorials. In another assay, the reverse was true. In a third assay, both sample types performed about the same. In the majority of assays formatted for high throughput, both combinatorial chemicals and natural products will provide adequate numbers of active samples for drug candidate lead identification programs. There is a perception however, that for biochemical assays for which combinatorial chemicals fail to produce a significant number of active samples, natural products are likely to provide some possibilities. 

Available in metal onl) , compared more vrith tray type performance than other packing materials. About same HETP as Spraypak for available data. Used in towers 24 in. and larger. Shows some performance advantage over bubble cap trays up to 75 psia in fracuonadon service, but reduced advantages above this pressure or in vacuum service. 

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