Self potential

The final contribution, the self-potential term Ogp, is the sum of all the above iateractions of adsorbed molecules with each other. 

In Figure 5, the heat of adsorption of CO2 increases slightly at the higher adsorbate loadings. This increase is due to the increasing self-potential contribution at the higher loadings. 

Waring DW, Turgeon JL (1992) A pathway for luteinizing hormone-releasing hormone self-potentiation cross-talk with the progesterone receptor. Endocrinology 130 3275-3282... 

The potential, (p A v), to be considered in the computation of AGn, is finally obtained, for r = aA, after subtraction of the appropriate self-potentials ... 

After subtraction of the self-potentials and averaging over the surface of each ion, one obtains... 

The values of the ESP at the nuclear positions, as obtained from the electron and Hartree-Fock structure amplitudes for the mentioned crystals (using a K-model and corrected on self-potential) are given in table 2. An analysis shows that the experimental values of the ESP are near to the ab initio calculated values. However, both set of values in crystals differ from their analogs for the free atoms [5]. It was shown earlier (Schwarz M.E. Chem. Phys. Lett. 1970, 6, 631) that this difference in the electrostatic potentials in the nuclear positions correlates well with the binding energy of Is-electrons. So an ED-data in principle contains an information on the bonding in crystals, which is usually obtaining by photoelectron spectroscopy. 

A discussion of the methods underlying the self-potentiation of gemcitabine is also important when discussing its mechanisms of action. They are outlined below (2) ... 

Plunkett W, Huang P, Xu YZ, Heinemann V, Grunewald R, Gandhi V. Gemcitabine metabolism, mechanisms of action, and self-potentiation. Semin Oncol 1995 22(4 Suppl 11) 3—10. 

Adsorption Potentials, Adsorbent Self-Potentials, and Thermodynamic Equilibria... 

Figure 7. Van der Waals values of self-potentials at absolute zero...

Figure 7 shows the values of the self-potentials at absolute zero for a van der Waals (6-12) close-packed crystal and an ionic crystal. The values are due to Benson (4). The two figures in parenthesis are Barrels (2). 

The author is very much indebted to G. C. Benson for carrying out the computer summations and calculations leading to the self-potentials given in Figure 7. 

If we wish to study die adsorbent-adsorbate interactions we must undertake adsorption calorimetry or analysis of the isotherm data at very low surface coverage. It is only under these conditions that we can eliminate, or at least minimize, the adsorbate-adsorbate interactions. At higher coverage, an additional (self-potential) term, Em, must be added to E0 to allow for the latter interactions. 

The determination of the Madelung constant for a crystal structure requires the evaluation of electrostatic self-potentials of the structure. Any lattice energy can also be expressed using lattice site self-potentials (which is what Ewald actually calculated) ... 

The existence of spontaneous potentials in the Earth has been known for at least 150 years and their measurement has been used systematically in the search for buried ore deposits since the 1920s (Parasnis, 1979). Spontaneous or self potentials (SP) are natural voltage differences between two points in the Earth which result in electrical... 

Burr, S.V., 1982. A guide to prospecting by the self-potential method. Ontario Geol. Survey, Misc. Paper 99 1-15. 

Sato, M. and Mooney, H.M., 1960. The electrochemical mechanism of sulphide self-potentials. Geophysics, 25 226-249. 

The self potential, < > is the potential at the charge that would be created by the charge itself in an infinite medium with the molecular dielectric constant The self potential of the charge is relatively large and is sensitive to... 

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