To evaluate the safety of rock wool (RW), an asbestos substitute, we examined the biopersistence of RW fibers in rat lungs based on the changes of fiber number and fiber size (length and diameter) by a nose-only inhalation exposure study. Twenty-four male Fischer 344 rats were exposed to RW fibers at a concentration of 30 mg/m(3) continuously for 3 h daily for 5 consecutive days. Six rats each ...

Pliable and water-resistant protein fibers from feathers were developed via continuous one-step spinning crosslinking using sucrose-tetra-aldehydes. Though flexible developed, poor wet stability low tenacity still limit the large high-end applications of feather-derived fibers. Despite that saccharide aldehydes are considered as an efficient sustainable crosslinker, substantial concerns such ge...

Adsorption of dye methylene blue from aqueous solution on the surface of sheep wool and cotton fibers was accomplished under the optimize conditions of temperature, concentration, pH, stay time duration and quantity of adsorbent. Spectrometric technique was used for the measurements of concentration of dye before and after adsorption. The percentage removal and distribution constant (KD) values...

This paper studied the wool and alpaca fibre curvature and its variation during the fibre processing. It revealed the effect of wool fibre crimp on the cohesion properties of alpaca and wool blended slivers. Different wool and alpaca tops were blended via a number of gillings, and the role of wool fibre curvature in alpaca/wool blend processing has also been investigated. During the wool fibre ...

Lambs wool production and qualities from the progeny of 2 Merino and 2 Damara rams mated to Merino ewes were compared. The crossbred lambs produced about half the amount of wool and had high fibre diameter variation and medullated fibre components. Merino lambs wool was contaminated with pigmented and medullated fibres apparently transferred from continual exposure to the Damara crossbred lambs...

The formation of comprehensive knowledge the assessment physical and technical parameters sheep wool depending on sex genotype is one problems animal biology, which due to requirements theory practice breeding, as well processing industry, although production an increasing number synthetic artificial fibers. Actually obligatory evaluation regulated by current state standards instructions conduc...