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34883-39-1 KKQWHYGECTYFIA-UHFFFAOYSA-N CP1 10 C 12 H 8 Cl 2: 2,6-Dichlorobiphenyl 33146-45-1 IYZWUWBAFUBNCH-UHFFFAOYSA-N 11 C 12 H 8 Cl 2: 3,3'-Dichlorobiphenyl 2050-67-1 KTXUOWUHFLBZPW-UHFFFAOYSA-N CP0, 2M 12 C 12 H 8 Cl 2: 3,4-Dichlorobiphenyl 2974-92-7 ZGHQUYZPMWMLBM-UHFFFAOYSA-N CP0 13 C 12 H 8 Cl 2: 3,4'-Dichlorobiphenyl 2974-90-5 ...
One of the largest deliberate PCB spills in American history occurred in the summer of 1978 when 31,000 gallons (117 m^3) of PCB-contaminated oil were illegally sprayed by the Ward PCB Transformer Company in 3-foot (0.91 m) swaths along the roadsides of some 240 miles (390 km) of North Carolina highway shoulders in 14 counties and at the Fort ...
Coplanar waveguides play an important role in the field of solid state quantum computing, e.g. for the coupling of microwave photons to a superconducting qubit.In particular the research field of circuit quantum electrodynamics was initiated with coplanar waveguide resonators as crucial elements that allow for high field strength and thus strong coupling to a superconducting qubit by confining ...
An RF power amplifier incorporating planar circuit structures. The amplifier on the left feeds its output into a set of planar transmission line filters in the centre. The third circuit block on the right is a circulator to protect the amplifier from accidental reflections of the power back from the antenna
Exposure to the coplanar stereoisomer 3,3',4,4',5,5'-hexabromobiphenyl (but not the non-coplanar stereoisomer) in genetically susceptible mice is known to cause immunotoxicity and disorders related to the central nervous system, and even at doses as low as 2.5 mg/kg, excess neonatal fatalities are observed (LD 50 is from 5–10 mg/kg). [1]
PCB manufacturing typically starts with a so-called core, a basic double-sided PCB. Layers beyond the first two are stacked from this basic building block. If two more layers are consecutively stacked from bottom of core, you can have a 1-2 via, a 1-3 via and a through hole. Each type of via is made by drilling at each stacking stage.
Figure 1. A microstrip line shielded by via fences on a printed circuit board A via fence , also called a picket fence , is a structure used in planar electronic circuit technologies to improve isolation between components that would otherwise be coupled by electromagnetic fields .
There are 209 PCB compounds. Analogously to PCDDs at least two lateral chlorines in each ring in positions 3,4, and/or 5 are needed for dioxin-like activity. Because the AH receptor requires a planar (flat) structure, only PCB congeners that can rotate freely along the C—C axis between the rings can attach the receptor.
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