Cobb test

Test Methods. The test methods used for water or oil repeUency are quite varied, in accordance with paper or paperboard type and end use. Two tests commonly used to measure water repeUency, the Hercules Size Test and the COBB Test, as weU as others have been summarized (55,69,70). 

Cobalt zinc silicate blue phenacite, formula and DCMA number, 7 347t Co-base superalloys, 13 503, 525-527 composition of, 13 526 Cobbing services, magnetic drums used in, 15 445-446 Cobb test, 13 101 Cocaine, 2 74, 79, 80, 108 economic aspects, 2 108 Cocamide DEA, function as ingredient in cosmetics, 7 829t... 

Cobb test BS EN 20535 1991 ISO 535 1991 for water absorbency. This measures the mass of water absorbed by 1 m2 of the test piece in a specified time under a head of 1 cm of water. It is determined by weighing before and after exposure to the water, and usually quoted in g/m2... 

Cobb test the amount of water absorbed by a given area of paper in a specified period of time. 

Barnett, L.B., Lovell, D.P.., Felton, C.F., Gibson, B.J., Cobb, R.R., Sharpe, D.S., Shelby, M.D. Lewis, S.E. (1992) Ethylene dibromide negative results with the mouse dominant lethal asssay and the electrophoretic specific locus test. Mutat. Res., 282, 127-133... 

For the model in Exercise 3, test the hypothesis that X = 0 using a Wald test, a likelihood ratio test, and a Lagrange multiplier test. Note, the restricted model is the Cobb-Douglas, log-linear model. 

The test for disintegration is performed as described in the USP, and the results are rounded to the nearest half-min. Disintegration time varied over a narrow range for all batches studied. The 15-batch average for the tray dryer process (2.7 min) is well below the specification (10 min) for this test. Hardness of tablets from the tray dryer process averaged 15 Strong-Cobb units (SCU). All batches exceeded the minimum specification (9 SCU) there is no upper... 

Work by Coyne and Cobb provided a more effective list of discharge colors because the colors were observed in the act of actual leak detection. They are presented in Table 7.16. Their work demonstrated that spraying gases had limited success in leak indication, but moderate success when the item being tested was enclosed within the gas (by way of a bag). Vapors from applied liquids provided better indicators and more easily demonstrated the specific location of a leak. 

Special dedicated hardness testers or multifunctional systems are used to measure the degree of force (in kilograms, pounds, or arbitrary units) required to break a tablet. Devices to test tablet hardness include the Monsanto tester, the Strong-Cobb tester, the Pfizer tester, the Erweka tester, and the Schleuniger tester. A force of about 4 kg is considered the minimum requirement for a satisfactory tablet. Multifunctional automated equipment can determine tablet weight, hardness, thickness, and diameter. Unfortunately, these testers do not produce uniform results for the same tablet due to operator variation, lack of calibration, spring fatigue, and manufacturer variation. 

Gatto, B., Moehle, W., Cobb, T. and Schneller, E., Oxidation Fundamentals and its Application to Turbine Oil Testing , ASTM Symposium on Oxidation and Testing of Turbine Ohs, Norfolk, VA, Dec 2005. 

Michotte has suggested that biolt ical oxidation processes in mesenchymal tissues require a balance of C -hydroxysteroids and adrenergic substances, and this is disturbed in rheumatic diseases owing to the failure of the adrenergic component. It is alleged that pyrocatechoic acid (V) may replace this component, restore the physiological imbalance and, consequently, suppress the inflammatory reaction. Adams and Cobb found that neither pyrocatechoic acid nor its diacetyl derivative administered orally inhibits ultra-violet erythema in the guinea-pig. The former compound, administered subcutaneously, reduces vascular permeability in the mouse peritoneum, but the effect is less than that of salicylic acid . Other dihydroxybenzoic acids tested are not active in this system . 

---