Abstract P-086

v98-086.chp:Corel VENTURA

The reactivity of lignin model compounds under Mannich conditions with piperidine and formaldehyde was studied. The piperidinomethyl group was confirmed to be introduced quantitatively at sterically unhindered positions ortho to a phenolic hydroxyl when the substrate was allowed to react under ambient conditions. The sequential application of the Mannich reaction followed by quantitative P NMR ...

Lancaster University Management School Working Paper 2003 / 086 Curriculum

Regression and neural network models of wage determination are constructed where the explanatory variables include detailed information about the impact of school curricula on future earnings. It is established that there are strong nonlinearities and interaction effects present in the relationship between curriculum and earnings. The results have important implications in the context of the hu...

MT-086: Fundamentals of Phase Locked Loops (PLLs)

Referring to Figure 1, a system for using a PLL to generate higher frequencies than the input, the VCO oscillates at an angular frequency of ωO. A portion of this signal is fed back to the error detector, via a frequency divider with a ratio 1/N. This divided down frequency is fed to one input of the error detector. The other input in this example is a fixed reference signal. The error detector...

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ABSTRACT