On the Role of the Results Obtained by the Analytical Theory of Elementary Particles

To prove that it is possible to obtain many results (such as the asymptotic relations of Pameranchuk type, Froissart inequality, Martin theorem, etc.) of the analytical theory of elementary particles in any theory where the ordinary analyticity of dispersion amplitude is replaced by a certain generalized analyticity (such as the p-analyticity of Poloji, the generalized analyticity of Vekua). Hence we cannot consider these results as criteria for the validity of the analyticity at high energies. Therefore, in order to check the analyticity we ought to establish the relations which can not be deduced from any generalized analyticity, except ordinary analyticity.     

Spectrophotometric determination of the protonation constants of o-cresolphthalexone and the formation constants of its alkaline-earth-metal comple

The first three protonation constants of o-cresolphthalexone and the two constants of phenolphthalein and o-cresolphthalein, and also the forma.     

Stabilité des médianes conditionnelles par rapport à des filtrations discrétiséesStability of conditional median under discretization of filtrations

Let Y=(Y_s)_s?1 be a stochastic process and X be a random vector. For the L_p-minimizing criterion, the set of best approximations of X we can get when the path of Y is known until time t is the set of conditionnal L_p-medians of X given (Y_s)_s?t. Assume that the path of Y is only observed in a finite set of times. In some cases, we show that the multiplication of the observation times allow us to rediscover asymptotically the best approximation of X we can get. To cite this article: B. Cadre, C. R. Acad. Sci. Paris, Ser. I 335 (2002) 545–548.     

Cesăro summability of the character system of the p-series field in the Kaczmarz rearrangement

Let $G_p$ be the $p$-series field. In this paper we prove the a.e. convergence $\sigma_n f\to f$ $(n\to \infty)$ for an integrable function $f\in L^1(G_p)$, where $\sigma_nf$ is the $n$th $(C,1)$ mean of $f$ with respect to the character system in the Kaczmarz rearrangement. We define the maximal operator $\sigma^* $ by $\sigma^*f := \sup_n|\sigma_nf|$. We prove that $\sigma^*$ is of type $(q,q)$ for all $1相似文献   

The Cu/n-GaAs schottky barrier diodes prepared by anodization process

The metal-insulating semiconductor (MIS) Cu/n-GaAs diodes with thin anodic-insulating layer, which is formed by anodic oxidazation on the n-GaAs substrate in aqueous 4C₂H₆O₂+2H₂O+0.1H₃PO₄ electrolyte with pH=2.02; anodically untreated control Cu/n-GaAs diodes; and anodically treated Cu/n-GaAs diodes (several steps of anodization in the same electrolyte followed by a dip in diluted aqueous HCl solution and a subsequent rinse in deionized water) have been prepared. The anodization has increased the barrier heights as well as the ideality factors. We have obtained barrier heights of approximately 0.68 eV, 0.90 eV, and 0.92 eV for the control sample, anodically treated sample, and MIS sample, respectively, adding the contribution caused by image-force effect only. Thus, the barrier height has been increased by at least 140 meV. Furthermore, we have calculated a mean tunneling-barrier height of x=0.025 eV for the MIS Cu/n-GaAs Schottky barrier diode (SBD).     

Mediated electrochemistry of horseradish peroxidase. Catalysis and inhibition.

A precise determination of the complex mechanism of catalysis and inhibition involved in the reaction of HRP with H(2)O(2) as substrate and an outersphere single electron donor ([Os(bpy)(2)pyCl](+)) as cosubstrate is made possible by a systematic analysis of the cyclic voltammetric responses as a function of the scan rate and of the substrate and cosubstrate concentrations, complemented by spectrophotometric steady-state and stopped-flow experiments. The bell-shaped calibration curve relating the electrochemical response to the concentration of H(2)O(2) is qualitatively and quantitatively explained by taking into account the conversion of the catalytically active forms of the enzyme into the inactive oxyperoxidase in addition to the primary catalytic cycle. These characteristics should be kept in mind in biosensor applications of HRP. The ensuing analysis and data allow one to predict biosensor amperometric responses in all practical cases. From a mechanistic standpoint, conditions may, however, be defined which render inhibition insignificant, thus allowing an electrochemical characterization of the primary catalytic cycle. At very low concentrations of H(2)O(2), its diffusion tends to control the electrochemical response, resulting in proportionality with H(2)O(2) concentration instead of the square root dependence characteristic of the classical catalytic currents. Intriguing hysteresis and trace crossings behaviors are also quantitatively explained in the framework of the same mechanism. As a consequence of the precise dissection of the rather complex reaction mechanism into its various elementary steps, a strategy may be devised for gaining a better understanding of the mechanism and reactivity patterns of each elementary step.