Search results
Results From The WOW.Com Content Network
Cronbach's alpha (Cronbach's ), also known as tau-equivalent reliability or coefficient alpha (coefficient ), is a reliability coefficient and a measure of the internal consistency of tests and measures. [1] [2] [3] It was named after the American psychologist Lee Cronbach.
Alpha is also a function of the number of items, so shorter scales will often have lower reliability estimates yet still be preferable in many situations because they are lower burden. An alternative way of thinking about internal consistency is that it is the extent to which all of the items of a test measure the same latent variable .
Acceptable daily intake or ADI is a measure of the amount of a specific substance (originally applied for a food additive, later also for a residue of a veterinary drug or pesticide) in food or drinking water that can be ingested (orally) daily over a lifetime without an appreciable health risk. [1]
The Food Defect Action Levels: Levels of Natural or Unavoidable Defects in Foods That Present No Health Hazards for Humans is a publication of the United States Food and Drug Administration's Center for Food Safety and Applied Nutrition [1] detailing acceptable levels of food contamination from sources such as maggots, thrips, insect fragments, "foreign matter", mold, rodent hairs, and insect ...
An acceptable quality level is a test and/or inspection standard that prescribes the range of the number of defective components that is considered acceptable when random sampling those components during an inspection. The defects found during an electronic or electrical test, or during a physical (mechanical) inspection, are sometimes ...
5.0, [5] [14] [15] 5.1: mmol/L or mEq/L [14] See hypokalemia or hyperkalemia: 14 [17] 20 [17] mg/dL Chloride (Cl) 95, [14] 98, [18] 100 [5] 105, [14] 106, [18] 110 [5] mmol/L or mEq/L [14] See hypochloremia or hyperchloremia: 340 [19] 370 [19] mg/dL Ionized calcium (Ca) 1.03, [20] 1.10 [5] 1.23, [20] 1.30 [5] mmol/L: See hypocalcaemia or ...
Generally, Benedict's test detects the presence of aldehyde groups, alpha-hydroxy-ketones, and hemiacetals, including those that occur in certain ketoses. In example, although the ketose fructose is not strictly a reducing sugar, it is an alpha-hydroxy-ketone which results to a positive test because the base component of Benedict converts it ...
Calcium hypochlorite, Ca(OCl) 2. [20] This product, known as "bleaching powder" or "chlorinated lime", it is used in many of the same applications as sodium hypochlorite, but is more stable and contains more available chlorine. It is usually marketed as a white powder that contains, besides the hypochlorite, also calcium hydroxide Ca(OH)