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Bioconcentration. In aquatic toxicology, bioconcentration is the accumulation of a water-borne chemical substance in an organism exposed to the water. [1][2] There are several ways in which to measure and assess bioaccumulation and bioconcentration. These include: octanol-water partition coefficients (K OW), bioconcentration factors (BCF ...
The Charrière is measured by the ''outer'' diameter, and is defined as 1 Fr = 1/3 mm, and thus 1 mm = 3 Fr; therefore the diameter of a round catheter in millimetres can be determined by dividing the French size by 3. [2] The French units roughly correspond to the outer circumference of the catheter (see table below).
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10, 9, 8, 7, 6, 5, 4, 3, 2, 1. 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 is the fourth studio album by Midnight Oil that was released on vinyl in 1982 under the Columbia Records label. It peaked at No. 3 on the Australian Kent Music Report Albums Chart and remained on the chart for 171 weeks. [1] It also became the band's first album to be released in the ...
The Chinese mathematician Liu Hui in 263 CE computed π to between 3.141 024 and 3.142 708 by inscribing a 96-gon and 192-gon; the average of these two values is 3.141 866 (accuracy 9·10 −5). He also suggested that 3.14 was a good enough approximation for practical purposes.
1910. Srinivasa Ramanujan. Found several rapidly converging infinite series of π, which can compute 8 decimal places of π with each term in the series. Since the 1980s, his series have become the basis for the fastest algorithms currently used by Yasumasa Kanada and the Chudnovsky brothers to compute π. 1946.
The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10−2 metres ( 1 100 m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimetres. 1 cm – 0.39 inches. 1 cm – edge of a square of area 1 cm 2.
3,4-Ethylenedioxythiophene. Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). 3,4-Ethylenedioxythiophene (EDOT) is an organosulfur compound with the formula C 2 H 4 O 2 C 4 H 2 S. The molecule consists of thiophene, substituted at the 3 and 4 positions with an ethylene glycolyl unit.