Board testing

Certain drugs (e.g., ethanol) are known to be strain dependent in their effects and may not produce consistent results in the hole-board test. Many commonly used drugs (e.g., fluoxetine) have pronounced dose-dependent effects on head dipping behavior, and therefore, dosing should be carefully considered see review in (22). 

Normal (synthetic) paint can usually create serious problems for MCS patients. It s thus best to look for natural paint, namely those kinds based in minerals or plants. Some paints contain a natural solvent and others use water for dilution. Even natural solvents can sometimes cause allergic reactions in sensitive people, so be careful. Natural paints based in water are without a doubt the safest for MCS patients. In any case, always first put some paint on a small out-gassed board and place it in your home to see if you react to it (perhaps even put the board next to your bed). Never paint your entire home or safe room in one go First do the board test, then paint a wall, then paint a room and see if everything is still all right. Only then should you proceed with other rooms. See Part VIfor several natural and organic solutions or go to www.the-abc-of-mcs.com under Living. ... 

Generally, materials identified as sensitizers in animals are not tested on humans. However, if the potential benefit of the material warrants, a small group of human subjects may be tested with materials inducing sensitization in animals. Such situations should be reviewed by an Institutional Review Board. Test subjects should be informed of the increased risks, and the number of subjects used should be limited (additional subjects can be exposed if members of a small group do not respond). 

The stability of the hemicellulose adiiesives and the effect of particle size were subsequently assessed. Hemicellulose adhesives were prepared with a portion (one-sixth) cooked and the remainder raw with borax and sodium hydroxide as before. Different particle sizes of hemicellulose were used for the suspended portion. The mixtures were used to glue corrugated board test samples after 4 hours or 4 days standing. The results (also on citrus box material) shown in Table III clearly indicate that the ply adhesion strength of the adhesives was not affected by standing or by particle size. 

It is advisable to use a color-coded labeling system to keep track of the test stages. In our case, a yellow spot was added after successful heat cycling with test software loaded, and a green spot half covering the yellow spot was added once the validated software had been loaded and the board tested successfully no device could be shipped unless both spots are present. The manufacturer will be expected to supply a certificate of conformity for the devices produced and packed with each batch. 

Leveque, J. J., Rivera, L. Wittlinger, G. 1993. On the use of the checker-board test to assess the resolution of tomographic inversions. Geophysical Journal, 115, 313-318. 

Fig. 6. Effect of face layer thickness on MOR of three-layer composite made from Sugistrand and recycled wood particle. Table 3. Furnish type and construction of composite board tested.

Inspection of the data in Table 2 shows some unusual results in the data for a 15.88-mm (Ys-in.) board tested parallel. On 15.88-mm (Ys-in.) Type X, where 79 sets of specimens were tested, the face-up and face-down tests have the same average when tested by the present tester. However, the face-up tests average higher and the face-down tests slightly lower on the new tester. The same trend is noticeable on the other types of 15.88-mm (Ys-in.) board tested, although there is more variation because of the smaller number of specimens tested. The face-down data do not fit the correlation curves and were omitted in calculating the conelation equations. 

One month after pressing, the boards were cut and triplicate samples for each duplicate board tested according to the dessicator method, using Purpald solution and a colorimeter, for formaldehyde emission over a period of 24 hours and 30 minutes Purpald development. After this initial assessment the samples were placed in a laboratory fan-exhaust oven at a temperature of 50 C to accelerate the test for a period of two months. The samples were tested at regular intervals of three weeks over the two months period. The formaldehyde emission results obtained are shown in Table I. 

During the manufacture (hot pressing) of the particleboard the formaldehyde is concentrated in the core of the board. Tests run on laboratory made particleboard with the same binder level throughout the board, have shown about 75% higher content of extract-able formaldehyde in the core than in the face ( ). Emission tests indicate an even greater difference between the two layers of the board. 

To Follow a Career Path that Requires Testing for Certification or Board Testing... 

Grain can also be detected by a Mullen burst test (and tensile strength)—see Paper and board testing below. 

S. Scheuber Building a Successful Board-Test Strategy... 

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