Tear quality

Sensory systems Eyes Conjunctival epithelial cells, basal tear secretion, and tear quality were markedly affected in patients during treatment with isotretinoin 0.8 mg/ kg [40 ]. Ocular adverse effects of isotretinoin are generally not serious and resolve after withdrawal. 

P. B. Crosby, Quality Without Tears, McGraw-Hill Book Co., Inc., New York, 1984, p. 10. 

Crosby, P. B., 1984, Quality without Tears The Art of Hassle-free Management, McGraw-Hill, New York, NY. 

There is a clear correlation between quality or cost of materials and the durability/life expectancy of buildings. Greater resistance of better materials to wear and tear can be assumed, with obvious implications on future maintenance. Striking the best balance between initial capital outlay and maintenance cost requires complex calculations that take into account such intangibles as future interest rates and taxation of building operations. 

There have been limited field and controlled exposure studies that evaluated human reactions to carpet emissions. Winfield (1987) described a USA primary school where odor, headache, nausea, fatigue and mucosal irritation were reported by a high proportion of the students. Elevated indoor air concentrations of styrene (900-4000 xg m 3) were found, which were believed to be due to a SB R latex-backed carpet which had been installed several years previously. The carpet was removed and the ill-effects were reported to abate. Johnsen et al. (1990) exposed asthma sufferers to a foam rubber-backed carpet in a room chamber. While no clinical effects on lung function were observed, objective eye measurements found that there was a change in tear film quality. This was proposed to result from a degreasing effect of lipophilic VOCs, identified as toluene and acetone (Wolkoff, Nielsen and Hansen, 1990). 

This component (the core paper) contributes the greater part of the strength of the laminate, including such qualities as dimensional stability and resistance to impact, to tearing, and to water. 

In the cremation ovens in the concentration camps, the problem of wear and tear on the fireproof brick was greater, not only because of the lesser mass of this fireproof material and its lower quality, but also because of the greater rate of use of the facility, and also due to its operation by untrained personnel whose hostile attitude to their work may very well have been reflected in the carelessness they showed in performing that work. 

---