The problem addressed in this paper is how to restore the power taken by the current injection network in the case of optimal injection of third harmonic, in a simple way, providing self-adjustment of the rectifier to the load current variations. Goals of the presented research are to use only one current sensor, and to improve third harmonic injection technique. A new rectifier topology is pro...

A new precision full-wave rectifier employing only two differential difference current conveyors, which is very suitable for CMOS technology implementation, is presented. The proposed rectifier is the voltage-mode circuit, which offers high-input and low-output impedance hence it can be directly connected to load without using any buffer circuits. PSPICE is used to verify the circuit performanc...

In this paper we consider the conflicts between two traditions of political ecology. The two traditions might be crudely characterised as physicalist and culturalist. The first is apparent in much of the work in ecological economics in particular, but also in the materialist left and more practically in conservation policy. It is concerned with the physical and biophysical conditions for human ...

management issues may be harder to tackle. This part of the crisis dates back to June 2004, when the assembly refused to approve the institute’s annual report because of the impending financial troubles. While Pasteur is a private nonprofit organisation that uses its income from patents to fund further research, its research is intertwined with the public funding bodies including CNRS and INSER...

introduction: human embryonic stem cells (hescs) are pluripotent cells that can proliferate and differentiate to many cell types. their electrophysiological properties have not yet been chracterzed. in this study, the passive properties (such as resting membrane potential, input resistance and capacitance) and the contribution of delayed rectifier k+ channel currents to the membrane conductance...