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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 ...
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 ...
Tow hitch. A tow ball mounted on the rear of a vehicle. A screw-on tow hook mounted at the front of a vehicle. A tow hitch (or tow bar or trailer hitch in North America [ 1]) is a device attached to the chassis of a vehicle for towing, or a towbar to an aircraft nose gear. It can take the form of a tow ball to allow swiveling and articulation ...
The fifth-wheel coupling provides the link between a semi-trailer and the towing truck, tractor unit, leading trailer or dolly. The coupling consists of a kingpin, a 2-or- -inch-diameter (50.8 or 88.9 mm) vertical steel pin protruding from the bottom of the front of the semi-trailer, and a horseshoe-shaped coupling device called a fifth wheel ...
Making a rope very tight, such as to secure an object to a vehicle. Caveat. Can produce excessive wear on rope, especially if tied repeatedly in the same spot [6] ABoK. #1514, #2124, #2125, #2126. Instructions. [1] The trucker's hitch is a compound knot commonly used for securing loads on trucks [7] or trailers.
The three-point hitch ( British English: three-point linkage) is a widely used type of hitch for attaching ploughs and other implements to an agricultural or industrial tractor. [ 1][ 2] The three points resemble either a triangle, or the letter A. In engineering terms, three-point attachment is the simplest and the only statically determinate ...
The timber hitch is a knot used to attach a single length of rope to a cylindrical object. Secure while tension is maintained, it is easily untied even after heavy loading. [1][2][3] The timber hitch is a very old knot. It is first known to have been mentioned in a nautical source c. 1625 [4] and illustrated in 1762. [1]
Buntline hitch. The buntline hitch is a knot used for attaching a rope to an object. It is formed by passing the working end around an object, then making a clove hitch around the rope's standing part and taking care that the turns of the clove hitch progress towards the object rather than away from it. Secure and easily tied, the buntline ...