Tracer Interpretation Using Temporal Moments on a Spreadsheet

This report presents a method for interpreting geothermal tracer tests. The method is based on the first temporal moment (mean residence time) of the tracer in the subsurface. The individual steps required to interpret a tracer test are reviewed and discussed. And an example tracer test directs the user through the interpretation method. An Excel spreadsheet application of the interpretation method is a companion document to this report

Influence of Pacing Mode and Rate on Peripheral Levels of Atrial Natriuretic Peptide (ANP)

The effect of acute modifications of pacing mode and rate on plasma ANP levels was evaluated. ANP was determined in ten resting patients with ODD pacemokers due to binodal disease or intermittent second- and third-degree AV block. At 82/minute pacing rate the ANP plasma levels (normal range 2 to 30 fmol/mL) corresponded to those under AAI (4.05 ± 2.10 fmol/mL) and DDD (4.18 ± 2.02 fmol/mL) pacing, but increased significantly (P < 0.05) during VVI pacing (6.96 ± 3.70 fmol/mL). Acceleration of DDD stimulation frequency from 82 to 113/minutes led to significant increases of ANP levels by the factor of three in all chosen AV delays. The lowest ANP plasma levels were measured of 175 msec AV delay under 82/minute pacing rate in DDD mode. Under 113/minutes the differences of ANP concentration after variations of AV delays were less pronounced. The influences of altered atrial pressure and tension on ANP release are discussed to account for changes in ANP plasma levels following different modes and rates of pacemaker stimulation.Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/75366/1/j.1540-8159.1989.tb01862.x.pd

STEADY STATE OPERATION OF A NON-LINEAR FABRY-PEROT FOR OBLIQUE INCIDENCE : POLARIZATION AND BEAM ANGLE DEPENDENCE

Les propriétés de transmission et de réflexion d'un Pérot-Fabry non linéaire de type Kerr, dépendent fortement de l'angle d'incidence, de la largeur et de la polarisation du faisceau incident. Des expériences sur les SEED's en Si confirment les résultats théoriques. Ces propriétés permettraient de techniques de commutation alternatives.Transmission and reflection of a non linear Fabry-Perot show strong dependence on the angle, width and polarization of the incident laserbeam. Experiments on SI-SEEDs confirm the theory. These properties could lead to interesting alternative switching mechanisms