Same-subject property realization

In order to study the physiologic evolution of the redox properties of skin, cyclic voltammograms are performed with platinum microelectrodes, every 15 min over 7 h. Each measurement was realized with a new microelectrode. For this preclinical study, nine volunteer subjects were involved they remained relaxed in the same room and their diet was checked during the whole experiment. 

Most of the literature of pyrotechnics available in English is unenlightening on the subject of charcoal. Most of the commercial producers of charcoals in the United States have no appreciation for the needs of pyrotechnists. The commercial producers seem to feel that if it is black and about the proper mesh size then it is suitable for pyrotechnics. In the author s experience no two species of wood or other plants produce charcoal with identical properties. Many pyrotechnists seem to think that particle size controls the reactivity of the charcoal. They have only to examine a fast burning composition from the Orient to realize this is not always the case. Gross particle size does have a marked effect on the reactivity, but not to the same degree that species factors and charring conditions do. 

We can also use the idea of context dependence to hypothetically hold the local neural properties of the brain fixed, while allowing the mental properties to vary due to the external context in which the subject is situated. If changing the mental properties caused a different behavior, then in this case the causation would be in virtue of the mental properties, rather than in virtue of any particular lower-level detail. If, however, varying the mental properties, while holding the neural properties constant resulted in the same behavior, then we would know that in this case, the behavior was caused in virtue of the particular micro-configuration of neural realizers. 

The realization that the primary electron donor in bacterial photosynthetic systems is a closely-coupled bacteriochlorophyll dimer has stimulated considerable interest in the photophysics of face-to-face porphyrin dimers [1-3]. Many such synthetic models have been described, including both symmetrical and asymmetrical porphyrin systems. Much of the interest in determining the photophysical properties of these face-to-face porphyrin dimers lies with the possibility that excitation may result in generation of a charge separated state [4]. In fact, the nature of the central metal cations determines the reaction exergonicity for photoinduced charge separation, at least for monophotonic events. Below, we illustrate the current status of this subject by reference to symmetrical (i.e., the same cation in both porphyrins) and asymmetrical (i.e., different cations in each porphyrin) dimers. 

The key to an understanding of the liquid heliums lies, in fact, in the realization that they are often best considered as though they were gases. As a first approximation, therefore, they can be treated as ideal gases. Liquid " He, being composed of atoms that are bosons, should thus be subject to Bose-Einstein statistics liquid He, composed of fermions, should be subject to Fermi-Dirac statistics. Any deviations of the properties of the actual liquids from those predicted for ideal gases of the same density can then be attributed to the finite sizes of the atoms and to the attractive interactions between them. 

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