Developability criteria

The pharmaceutical reference substance system, accepted in USSR, did not meet to modern requirements. For creation of a modem system in Ukraine it was required to develop criteria to uncertainty of analytical phamiaceutical procedures. 

On basis of developed criteria, the theoretical background of reference substances elaboration is developed, and also ai e developed procedures of elaboration and documentation system for the Ukrainian State Phamiacopoeia RS and for working RS of the phamiaceutical plants. These approaches ai e successfully applied to elaboration of RS for inter-laboratory testing. 

Many authors contributed to the field of diffusion and chemical reaction. Crank (1975) dealt with the mathematics of diffusion, as did Frank-Kamenetskii (1961), and Aris (1975). The book of Sherwood and Satterfield (1963) and later Satterfield (1970) discussed the theme in detail. Most of the published papers deal with a single reaction case, but this has limited practical significance. In the 1960s, when the subject was in vogue, hundreds of papers were presented on this subject. A fraction of the presented papers dealt with the selectivity problem as influenced by diffitsion. This field was reviewed by Carberry (1976). Mears (1971) developed criteria for important practical cases. Most books on reaction engineering give a good summary of the literature and the important aspects of the interaction of diffusion and reaction. 

In developing criteria for the ranking of adhesive formulations or adherend surface treatments or primers, it is necessary to distinguish between two different situations. In one case (contact adhesion), a true interface is believed to exist across which intermolecular forces are engaged, while in the other, an interphase is formed by diffusive interpenetration or interdigitation between the adhesive and the adherend (diffusion interphase adhesion). Even in the case of contact adhesion, more often than not, an mi vphase of macroscopic thickness forms on... 

The Nordic eco-label has developed criteria for leather based on environmental, health and quality requirements. The requirements are imposed on the production process, from the production of skins to the final leather products. The Nordic eco-label is to some extent coordinated with the European eco-label. The criteria for the Nordic eco-label for leather are currently in 2012 being revised. At the moment the Nordic eco-label for leather includes the following criteria regarding ... 

Cocurrent depressurization, purge, and pressure-equalization steps are normally added to increase efficiency of separation and recovery of product. At the end of the adsorption step, the more weakly adsorbed species have been recovered as product, but there is still a significant amount held up in the bed in the inter- and intraparticle void spaces. A cocurrent depressurization step can be added before the blowdown step, which is countercurrent to adsorption. This increases the amount of product produced each cycle. In some applications, the purity of the more strongly adsorbed components has also been shown to be heavily dependent on the cocurrent depressurization step [Cen and Yang, Ina. Eng. Chem. Fundam., 25, 758-767 (1986)]. This cocurrent blowdown is optional because there is always a countercurrent one. Skarstrom developed criteria to determine when the use of both is justified [Skarstrom in Li, Recent Developments in Separation Science, vol. II, CRC Press, Boca Raton, pp. 95-106 (1975)]. 

When developing the list of substances, EPA considered only the inherent characteristics of a chemical that indicate a severe threat due to exposure. Well-defined criteria were used for toxicity and flammability. However, because of the complexities of site-specific factors and process conditions, EPA was unable to determine any inherent characteristic as an indicator of reactivity. EPA concluded that there was insufficient technical information for developing criteria for identifying reactive substances. 46 Consequently, the January 1994 RMP list of 130 chemicals does not contain any substances listed due to reactive hazards. 

Because of the status of the CAC described above, the work that it has carried out in the area of laboratory quality assurance must be carefully considered. One of the CAC Committees, the Codex Committee on Methods of Analysis and Sampling (CCMAS), has developed criteria for assessing the competence of testing laboratories involved in the official import and export control of foods. These were recommended by the Committee at its 21st Session in March 19979 and adopted by the Codex Alimentarius Commission at its 22nd Session in June 1997 10 they mirror the EU recommendations for laboratory quality standards and methods of analysis. The guidelines provide a framework for the implementation of quality assurance measures to ensure the competence of testing laboratories involved in the import and export control of foods. They are intended to assist countries in then-fair trade in foodstuffs and to protect consumers. 

Best estimates are suggested for each property according developers criteria. See detailed estimates through each in the corresponding pages... 

PROCESSING Developing criteria Developing conditions Developer composition Pre and Postbaking conditions... 

In order to optimize the developing process, it is necessary to have a set of developing criteria such as the following that are typical of the criteria used in our own positive resist development work ... 

Development criteria for negative resists are essentially the same, although in this case, the original film must by necessity, be completely removed. The film thickness remaining is also never the original film thickness for negative materials since this condition would not result in the correct feature size, (see Section 4.2.a.). 

The summation is over a suitably large number of terms. Wiscombe (1980) developed criteria for the number of terms required, and for 8 < x < 4,100 he recommended that the number of terms be n = x + 4.05x + 2. 

When intraparticle diffusion is rate limiting, the kinetic behaviour of a chemically reacting system is generally different from that which would prevail if chemical reaction were rate limiting. It is therefore extremely important to develop criteria to assess whether intraparticle diffusion effects may be neglected and thus define the conditions of experiment which would reveal true chemical kinetics rather than overall kinetics disguised by intraparticle diffusion effects. 

Innovative Technology Evaluation (SITE) demonstration program. Based on information from the demonstration, an economic analysis was performed to estimate costs associated with a commercial-size unit using the technology. CF Systems developed criteria and costs for a base case and a hot spot case and then extrapolated these costs to three other cases (D132627, p. 21). 

For packed bed reactors, Carberry and Wendel (1963), Hlavacek and Marek (1966), and Carberry and Butt (1975) report that axial dispersion effects are negligible if the reactor length is sufficient. These and other researchers (Young and Finlayson, 1973 Mears, 1976) have developed criteria based on the reactor length for conditions where axial dispersion can safely be neglected. The criterion shown in Table V is a classic criterion for neglecting axial mass dispersion. The works by Young and Finlayson (1973) and Mears (1976) provide more detailed criteria to predict when axial dispersion is unimportant in nonisothermal packed bed reactors. 

Recommendation 3-la. The Army should develop criteria and a schedule for resolving design and operational issues raised in the 1998 report, Using Supercritical Water Oxidation to Treat Hydrolysate from VX Neutralization, that have not yet been resolved for supercritical water oxidation operation at Newport. These issues include materials of construction, fabrication methods, system plugging, pressure let-down, and the duration of successful continuous pilot-scale operations. 

Classification system applies to any waste that contains radionuclides or hazardous chemicals. Waste classification system does not provide a substitute for site-specific risk assessments in developing waste acceptance criteria at particular disposal facilities or in developing criteria for remediation of particular contaminated sites. 

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