Direct Measurements of SPG in Electrical Logging

Electrical measurements

In this module we will learn the most important principles of making electrical measurements in general, i.e., to obtain voltages and currents using the appropriate instruments and connections, and to understand and minimize sources of error. Furthermore, we will discuss selected electrical measurement methods used to obtain chemical and physical information of liquids, solids, and interfaces. ...

Semi-analytical response of acoustic logging measurements in frequency domain

This work proposes a semi-analytical method for simulation of the acoustic response of multipole eccentered sources in a fluid-filled borehole. Assuming a geometry that is invariant with respect to the azimuthal and vertical directions, the solution in frequency domain is expressed in terms of a Fourier series and a Fourier integral. The proposed semi-analytical method builds upon the idea of s...

Measurements of Electrical Quantities

on direct sums of baer modules

the notion of baer modules was defined recently

All-electrical measurements of direct spin Hall effect in GaAs with Esaki diode electrodes

M. Ehlert,1 C. Song,1,2 M. Ciorga,1,* M. Utz,1 D. Schuh,1 D. Bougeard,1 and D. Weiss1 1Institute of Experimental and Applied Physics, University of Regensburg, D-93040 Regensburg, Germany 2Laboratory of Advanced Materials, Department of Material Science & Engineering, Tsinghua University, Beijing 100084, China (Received 12 September 2012; revised manuscript received 24 October 2012; published 2...