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The “coefficient of variation of fibre diameter” (CVD) is a measure of the variation in fibre fineness within the sample fleece, relative to the average fibre diameter. Crossbred and coarse wools are often measured for mean fibre diameter by older instruments—"Airflow" in many parts of the world, and even a projection microscope in some ...
Short-stapled wools are more profitably used in the woollen section where high-grade material may be produced from superfine wool. The Australian Standard requires that a sale lot has a minimum of 55 staples measured with the average calculated and produced. The variability of this measure is reported as the coefficient of variation (CV%).
Thus one can roughly find the number of twists per inch for the single, or one can use the doubled back yarn as a measure. With a thick-and-thin yarn, it is best to count the twist over several inches and average the results. [2] This is because the number of twists per inch will tend to vary between the thin and thick sections.
The Bradford system (also known as the English Worsted Yarn Count System or spinning count or Bradford count) is a way to assess the fineness of wool.. To measure the fineness of sheep wool fibre before microscopes and lasers were used, English wool handlers in the city of Bradford described wool by estimating (with experienced eyes) how many 560-yard (512 m) hanks of single-strand yarn could ...
These measurements of two samples of NTS Basalt were credited to some D.R. Stephens, USAEC UCRL — 7605, 1–19, 1963. They are reported in the TPRC Data Series in Volume 2 on pages 798 and 799. Ki-iti Horai, Thermal conductivity of Rock Forming minerals , Journal of Geophysical Research, Volume 76, Issue 5, pages 1278 — 1308, February 10, 1971.
Another common body measurement tool is the body mass index (BMI), which makes its calculation from two factors: height and weight. It’s still widely used by the medical community to determine ...
The S numbers originated in England, [4] where the worsted spinning process was invented and arose from the worsted yarn count system for stating the fineness of yarn. The worsted count (also known as the Bradford count) was the number of 560-yard (510 m) lengths (hanks) of worsted yarn that 1 pound (0.45 kg) of wool yields. [5]
She recently graduated with her doctorate and was responsible for developing new chemical methods to measure how sources such as plastic could transfer into foods. "I have felt a lot of things in ...