Complex conductivity measurements of carbonate rocks are scarce despite the occurrence these at surface Earth. The complex spectra 57 samples were measured in a broad frequency range and four salinities (NaCl). A simple model induced polarization is developed to be applied field. in-phase (related conduction) reported as function pore water determine (intrinsic) formation factor conductivity. n...

resistivity and induced polarization methods are used in exploration of porphyry metals for years. the resistivity method is used in the study of horizontal and vertical discontinuities in the electrical properties of the ground. the induced polarization method makes use of the capacitive action of the subsurface to locate zones where conductive minerals are disseminated within their host rocks...

This paper suggests that the astronomical science data recorded with low F# telescopes for applications requiring a known point spread function shape and those applications requiring instrument polarization calibration may be compromised unless the effects of vector wave propagation are properly modeled and compensated. Exoplanet coronagraphy requires “matched filter” masks and explicit designs...

The classical method to increase the nuclear spin polarization is the "solid effect" mainly developed by Abragam and Jeffries, where the Boltzmann polarization of unpaired electrons present in the sample is transferred to the nuclei by inducing forbidden transitions which flip one nucleus and one electron simultaneously (1,2). A different method is the optical nuclear polarization (ONP) which w...

Using the S1/2Fg = 2 −→ P3/2Fe = 3 transition in Rb, we analyzed the interaction between the arbitrarily polarized laser light and Zeeman sublevels in the Hanle configuration. We studied theoretically and confirmed experimentally that the effect of the laser light polarization on the electromagnetically induced absorption strongly depends on the laser light power. For the same atomic transition...

Polarization of polymorphonuclear neutrophils (PMNs) can be elicited by the chemotactic peptide N-formyl-methionyl-leucyl-phenylalanine (fMLP) and the microtubule-disrupting compound colchicine. Here we report on whether natural and synthetic proteinase inhibitors alter the polarizing response to these two agents. The alpha 1-proteinase inhibitor, N-tosyl-L-phenylalanine chloromethyl ketone, an...