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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 ...
Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
Tris (pentafluorophenyl)borane, sometimes referred to as "BCF", is the chemical compound (C6F5)3B. It is a white, volatile solid. The molecule consists of three pentafluorophenyl groups attached in a "paddle-wheel" manner to a central boron atom; the BC3 core is planar. It has been described as the “ideal Lewis acid ” because of its high ...
Louisville & Nashville Railroad Company v. Mottley, 211 U.S. 149 (1908), was a United States Supreme Court decision that held that under the existing statutory scheme, federal question jurisdiction could not be predicated on a plaintiff 's anticipation that the defendant would raise a federal statute as a defense.
The old main building was built in 1845, and is considered by the National Park Service to be the best remaining antebellum hospital in the United States. [2] Of the seven hospitals built in the mid-19th century by the Marine Hospital Service "for the benefit of sick seamen, boatmen, and other navigators on the western rivers and lakes", It is ...
Ishango bone. The Ishango bone, discovered at the "Fisherman Settlement" of Ishango in the Democratic Republic of the Congo, is a bone tool and possible mathematical device that dates to the Upper Paleolithic era. [1] The curved bone is dark brown in color, about 10 centimeters in length, and features a sharp piece of quartz affixed to one end ...
For dissolution class boundaries, an immediate release product is considered rapidly dissolving when no less than 85% of the labeled amount of the drug substance dissolves within 15 minutes using USP Dissolution Apparatus 1 at 100 RPM or Apparatus 2 at 50 RPM in a volume of 900 ml or less in the following media: 0.1 M HCl or simulated gastric ...
t. e. Joint custody is a court order whereby custody of a child is awarded to both parties. [1][2] In the United States, there are two forms of joint custody, joint physical custody (called also "shared parenting" or "shared custody") and joint legal custody. [2] In joint physical custody, the lodging and care of the child is shared according ...