Evaluation tests

The results of those evaluation tests ean be summarized as stated below ... 

Regardless of whether the fabric stmcture is woven or knitted, accurate characterization of constmction parameters is necessary to evaluate test results for other properties and to explain differences noted when comparing test data from fabrics of different constmctions. 

Brown has pointed out that Du Pont use evaluation tests for (a-) as-received unstabilised alloys containing more than 0-03% C to check the effectiveness of the final heat treatment and (b) stabilised or special low-carbon grades after a sensitising treatment (1 h at 677°C) to determine whether susceptibility might develop during a subsequent welding operation. 

It should be noted that although ASTM A262 1986 provides details of test procedures no information is given on typical corrosion rates or acceptable limits for various heat-treated alloys, which are regarded as outside the province of a specification that describes test procedures. Table 19.4, taken from a paper by Brown, shows the maximum acceptable evaluation test rates specified by the Du Pont Company for various alloys tested by the acid... 

Table 19.4 Maximum acceptable evaluation test rates specified by Du Pont for services where susceptible material would be intergranularly attacked ...

If prototype tooling is not made, then production tooling must be made to provide samples for evaluation testing. This is justified if the product does not represent a substantial departure from previously made units whose performance is known in similar applications. If there is no prior history and as an example... 

A designer should consult with experts to interpret data from chemical compatibility tests. To meet this need, U.S. EPA developed a software system called Flexible Membrane Liner Advisory Expert System (FLEX) to assist in evaluating test data. FLEX is an expert system that is based on data from many chemical compatibility tests and contains interpretations from experts in the field. 

For full-scale processing, more accurate and more dedicated techniques using larger samples may be necessary, following the specific experimental hazard evaluation testing scheme outlined previously in Figure 2.4. 

King, P. V., and A. H. Lasseigne, "Hazard Classification of Explosives for Transportation Evaluation Test Methods, Hazard Evaluation, Research, and Engineering," Report No. TSA-20-72-5, prepared for U. S. Dept, of Transportation (1972) (available from NTIS, Springfield, VA). 

Coffee, R. D., "Hazard Evaluation Testing," CEP Technical Manual, Loss Prevention, 3,18 (1969), American Institute of Chemical Engineers, New York, NY. 

Concurrent Control. Comparisons between treatments should be made to the maximum extent possible between experimental units from the same closely defined population. Therefore, animals used as a control group should come from the same source, lot, age, and so on as test group animals. Except for the treatment being evaluated, test and control animals should be maintained and handled in exactly the same manner. 

The principal test to establish the chemical resistance of the polymeric landfill liners to liquid wastes and industrial effluents is the immersion of geomembrane in a sample either of a defined chemical mixture or of a leachate from an existing storage site. This is performed either at various elevated temperatures in order to generate an Arrhenius diagram, or at fixed temperatures of 50 °C and at 20 °C, and is followed by a number of, primarily, mechanical evaluation tests. 

Details for performing these evaluation tests can be found in the references cited in Tables 9.3-1 and 9.3-2. 

To take this one step further, it may then be possible to develop preferred cleannp methods from one (but preferably more) of the physical properties, as determined by the evaluation test methods. 

Construction of the Hup mutant strain by interposon mutagenesis (A) and evaluation test of its hydrogen photoproduction performace in comparison to the wild type (B) (courtesy of Enitecnologie, Milano). 

The method development and optimization phase is completed with test method description drafted according to the method development results. The following method evaluation tests will continue with direct involvement of the customer (receiving laboratory). The goal is to check whether the developed late phase method performs adequately in different labs. 

Identify those potentially hazardous materials for which important properties are unknown and conduct appropriate material hazards evaluation tests. 

Performance trials and evaluation tests on the technique indicate that it is both rehable and accurate, and, in addition, that the specificity is sufficient to cope with most chnical requirements. An evaluation was made by Haeckel et al. [19]. If this approach is successful, the dispensers and tubes in laboratories will become redundant. It may well become possible for a clinical test to be undertaken close to the patient rather than in the laboratory. Whilst the techniques have as yet been used only for clinical analyses, there are many other potential applications, for example in the water industry. However, the very nature of the technique necessitates development by Eastman Kodak. Very few users will be able to influence the choice of analytical problems to be tackled by this unique approach. 

Evaluation is undertaken by the ECHA (see below) to evaluate testing proposals made by industry or to check compliance with the registration requirements. The ECHA will also coordinate substance evaluation by the authorities to investigate chemicals with perceived risks. This assessment may be used later to prepare proposals for restrictions or authorization. Substances with properties of very high concern will be made subject to authorization the ECHA will publish a list containing such candidate substances. Applicants will have to demonstrate that risks associated with uses of these substances are adequately controlled or that the socioeconomic benefits of their use outweigh the risks and there are no suitable alternative substitute substances or technologies. 

Samples of Table 2 were tested for the citral/acetone reaction. The reaction formed essentially pseudoionones and the selectivity to PS was higher than 96 % over all the catalysts during the 6 h catalytic tests. Figure 3 shows the evolution of the relative concentration of citral and the PS yield (tips) as a function of time on Li/MgO-2 and typically illustrates the catalytic behavior of the samples during the reaction. Citral concentration continuously decreases reaching almost complete conversion at the end of the evaluation test while pps value concomitantly increases up to more than 90%. 

The tests are designed to predict which of seven categories of drug the suspect may have used (1) CNS depressants, (2) CNS stimulants, (3) cannabinoids, (4) phencyclidine, (5) opioids, (6) hallucinogens, and (7) inhalants. The combination of results from the laboratory analysis of the blood or urine sample and from the 12-step evaluation test will help decide whetherthe defendant was impaired at the time of the stop. 

Culling, "Statistical Methods Appropriate for Evaluation Tests of Fuze Explosive-Train Safety and Reliability , NAVORD Rept No 2101 (1953)... 

Military Standard. "Basic Evaluation Test for Use in Development of Electrically Initiated Explosive Components for Use... 

User Test, which i s an evaluation test, conducted on materiel under development... 

Engineering Test. Ic is an evaluation test of materiel under development conducted by, or under die supervision of, the technical service concerned to determine inherent structural, electrical, or other physical or chemical qualities of the item or system tested, including those of an environmental nature, designed to provide a basis for decisions as to subsequent developmental action or the suitability of the item for user test... 

Empty chamber heat distribution test data summaries Copy of appropriate specifications used Test data summary sheets for each function evaluation Test and equipment pre- and postcalibration status listings... 

Section Val. 2100 provides 14 critical environmental performance evaluation tests, including ... 

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