Acceptance by attributes

Sections 20.4.4 and 20.4.5 present two types of analyses and their OC Curves, respectively called Acceptance by variables and Acceptance by attributes, illustrated with pharmaceutical examples. Section 20.4.6 on Content uniformity of dosage forms shows how the determination of uniformity of content or mass of individual units can be performed, when needed. 

With attribute data the product either has or has not the ascribed attribute - it can therefore either pass or fail the test. There are no gray areas. Attributes are measured on a go or no-go basis. With variables, the product can be evaluated on a scale of measurement. However, with inspection by attributes we sometimes use an acceptable quality level (AQL) that allows us to ship a certain percent defective in a large batch of product -... 

Acceptance sampling can be either by attributes or by variables. In sampling by attributes, the item in the batch of product either conforms or not. The number of nonconformities in the batch is counted and if this reaches a predetermined figure, the batch is rejected. In sampling by variables, the characteristic of interest is measured on a continuous scale. If the average meets a predetermined value,... 

In addition, published sampling plans for different sectors indicate the number of samples to be taken from a lot. For example, when carrying out acceptance sampling by attributes (see Section 3.3.2), as described in ISO 2859-1 [6], a number of factors have to be taken into account ... 

The terms and definitions taken from ISO 2859-1 1999 Sampling procedures for inspection by attributes Part 1 Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection, Table 1, a portion of Table 2-A, and a portion of Table 10-L-l, are reproduced with permission of the International Organization for Standardization, ISO. This standard can be obtained from any ISO member and from the Web site of ISO Central Secretariat at the following address www.iso.org. Copyright remains with ISO. 

Sampling Procedures for Inspection by Attributes - Part 1 Sampling Schemes Indexed by Acceptance Quality Limit (AQL) for Lot-by-Lot Inspection , ISO 2859-1 1999, International Organization for Standardization (ISO), Geneva, Switzerland, 1999. 

Hhong et ah (2009) described the sensory attributes of morama oil as fresh, thick, creamy, and smooth with a grassy and earthy aroma and raw nutty flavor and aftertaste. Compared to both sunflower and olive oils, potato chips fried in morama oil were rated as more acceptable by consumers (Tlhong et ah, 2009). Therefore, as a cooking oil, morama oil has great potential in terms of consumer acceptability. However, its acceptability as a salad oil remains imexplored. 

Receipts of active ingredient raw materials B1 and B2 are accepted by quality control based on standard tests for potency, chemical attributes, and particle size. Particle size is determined by sieve analysis. Unfortunately, this is a limit test in which 99% of the sample must pass through a certain mesh screen, therefore any influence particle size distribution might have on dosage form potency cannot be examined. 

At present, extensive research has been conducted on the antioxidant and antimicrobial properties of wines. Similar studies on vermouth should be conducted in-depth. Generally, red wine is considered better than white with respect to antioxidant effect. How red versus white vermouths compare in these regards needs to be determined. Though vermouth is a traditional commercial product, the relationship of its flavor attributes to its chemical constituents and is lacking. It could be a fertile field for future studies. In addition, few studies have been conducted on its maturation and the changes that occur during aging. The use of noncaloric sweeteners is another topic worthy of evaluation relative to its acceptability by diabetics. 

If on-off control is being considered, the achievable performance can be estimated by considering a limit-cycle at the natural period, t . The change in concentration from maximum to minimum reagent addition, A <, must he attenuated sufficiently so that the outlet concentration variation is less than the acceptable variation, Attributing the output variation to the first harmonic... 

The rules to predict AlP04-5 (AFI) synthesis are preliminarily built by data mining. The results associate with six attributes, involving the longest atomic distance > 0.496 nm, the secondary distance < 0.765 nm, the ratio of the number of protons acceptable by the template to the number of N atoms < 8, and the formation enthalpy <421.41 kJ/mol. The reliability of the constraint is 178/190 = 93.7%, and the support-ability of that is 190/549 = 34.6%. 

From the results of the present work, it can be concluded that the storage at the usual commercial temperatures (T = — 18°C slightly above T g) affects the quality of aqueous starch sucrose pastes without gums caused by amylose and amylopectin retrogradation. However, when hydrocolloids are included in the formulations, the usual storage conditions allows main-tainence of acceptable textural attributes. 

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