Terminal blocks, plastics used

As discussed in Chapter 5, unreinforced plastics have been used in electrical applications as diverse as wire and cable covering, insulation, transformers, switch gear, electric motor components, capacitors, printed boards, and electronic compounds. Reinforcement of the polymer with 20%-40% glass fiber, for example, extends the range of applications to automobile ignition switches, relay switches, terminal boards, electrical and electronic devices, encapsulation, electrical circuit breakers, brush holders in electric motors, termination blocks, and electrical plugs. 

In the nucleus accumbens immunocytochemical labelling shows that, in contrast to the hippocampus, CBi receptors are located on glutamatergic nerve terminals (Robbe et al. 2001). In a mouse brain slice preparation, low-frequency stimulation (13 Hz for 10 min) evoked LTD of field EPSPs or EPSCs recorded in the nucleus accumbens (Robbe et al. 2002,2003). This LTD apparently depended on the activity of endocannabinoids, since it was occluded by 0.3 pM WIN55,212-2, blocked by 0.1-1 pM rimonabant or 2 pM AM251, and critically, it was absent in CBr " mice. While the use of CBr " mice shows that CBi receptors are essential for this form of synaptic plasticity in the nucleus accumbens, the cannabinoid ligands were not tested in CBr " animals, and so although it is likely, it is not certain that they produced their effects via the CBi receptor. In a similar study, low-frequency stimulation (10 Hz for 5 min) induced LTD of the population spike recorded in... 

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