Gated migration

Using a synthon of PdHBr, the insertion of the external double bond of limonene does not produce a new chiral carbon, and this source of stereoisomerism is removed. Then the gated migration of Pd into the cyclohexene fragment affords enantioselectively a chiral Pd allyl complex (85% yield) along with other minor products (Eq. 6.20) [55],... 

Fricker, R.A., Carpenter, M.K., Winkler, C., Greco, C., Gates, M.A., and Bjorklund, A. (1999) Site-specific migration and neuronal differentiation of human neural progenitor cells after transplantation in the adult rat brain. / Neurosci 19 5990-6005. 

The foundation for the development of these techniques is built on investigations into photon migration processes [2, 9]. Subsequent, detailed examination by Everall et al. [10, 11] demonstrated that the inelastically scattered (Raman) component decays substantially more slowly than its elastically scattered counterpart (i.e. the laser light) due to the regeneration of the Raman signal from the laser component. Discrimination between diffusely scattered photons and the ballistic and snake components is achieved by gating the detector in the temporal or spatial domain. 

Isbilen B., Fraser S. P., and Djamgoz M. B. A. (2006). Docosahexaenoic acid (omega-3) blocks voltage-gated sodium channel activity and migration of MDA-MB-231 human breast cancer cells. Int. J. Biochem. Cell Biol. 38 2173-2182. 

Thomas, L. B., Gates, M. A., and Steindler, D. A. (1996). Young neurons from the adult subependymal zone proliferate and migrate along an astrocyte, extracellular matrix-rich pathway. Glia 17, 1-14. 

The question of trace ionic contaminants is often overlooked. There is no doubt, however, that trace ions initially present in the polymer or subsequently introduced during the manufacturing process can wreak havoc with the device as well as with device-mounted components as the device ages and the ions migrate. Thus, not only can Na ions migrate to and destroy an FET by lowering the threshold resistance in the gate, halide ions can attack some metals, which may lead to a loss of interfacial adhesion and will certainly lead to a loss of conduction. 

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