CONTACT PHOTOALLERGY TO TRIBROMSALICYLANILIDE
SUMMARY. .
Contact photosensitivity patterns to halogenated salicylanilides in man and guinea pigs.
Photocontact dermatitis was observed in 32 patients who had been exposed to brominated salicylanilides or other closely related chemicals used as antimicrobial agents in soaps. Patterns of cross-reactivity between tribromsalan, dibromsalan, metabromsalan, TCSA, bithional, hexachlorophene, and trichlorcarbanilide were assessed. Action spectrum studies using monochromatic radiation indicated a peak reactivity in the 3,600Angstrom range. Twelve of the 32 patients were found to be persistent light reactors. Their clinical characteristics, abnormal reaction to sunburn radiation, and course are described. Contact photosensitivity was induced in Hartley strain albino guinea pigs with both TCSA and tribromsalan. Patterns of cross-reactivity were assessed and found to be similar to those observed in man. Preliminary data concerning successful passive transfer in guinea pigs of photocontact hypersensitivity using mononuclear peritoneal exudates is presented.
Evaluation of Impact of Yarn Count and Stitch Length on Pilling, Abrasion, Shrinkage and Tightness Factor of 1 ? 1 Rib Cotton Knitted Fabrics
This study investigates the impact of yarn count and stitch length of 100% cotton knitted fabrics. 1 × 1 ribs structured fabrics were used in this research work. The stitch length 2.50 mm, 2.52 mm, 2.60 mm, 2.70 mm, 2.80 mm and 2.96 mm were used of the yarn count of 26Ne, 28Ne and 36Ne. The areal densities of the grey fabrics were in various amounts. The impacts of yarn count and stitch length were measured concerning pilling resistance, abrasion resistance, and shrinkage and tightness factor. The result showed that the fabric pilling grade decreased while number of cycle increased. Abrasion resistance decreased but length wise shrinkage increased despite the fact that the stitch length increased. The results also exposed that the tightness factor of the fabric increased with the increase of the stitch length in both dyeing and washing state and finished state compared to grey state for the yarn count 26Ne and homogeneous result not found for yarn count 28Ne and 36 Ne. Evaluation of Impact of Yarn Count and Stitch Length on Pilling, Abrasion, Shrinkage and Tightness Factor of 1 × 1 Rib Cotton Knitted Fabrics