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131.
We set up a classification system able to detect patients affected by migraine without aura, through the analysis of their spontaneous EEG patterns. First, the signals are characterized by means of wavelet-based features, than a supervised neural network is used to classify the multichannel data. For the feature extraction, scale-dependent and scale-independent methods are considered with a variety of wavelet functions. Both the approaches provide very high and almost comparable classification performances. A complete separation of the two groups is obtained when the data are plotted in the plane spanned by two suitable neural outputs. 相似文献
132.
A new tool for the measurement of TOC based on the heterogeneous photocatalysis activated by two different light sources has been planned. The instrument is constituted by a cell where the degradation occurs thanks to both the UV irradiation and the presence of a powered catalyst and by a measurement cell lodging CO2 gas permeable membrane electrode (detector), thermometer, inlet and outlet ways for the samples. One of the sources has a maximum emission at 254nm, while the other simulates the solar spectrum. A suspension (1 g/L) of titanium dioxide (Degussa P25) has been used to catalyse the process. A magnetic stirrer and a circulating pump avoid the deposition of the catalyst on the bottom of the reactor. The online measurement of produced CO2 was performed on 11 molecules (commercial names: Parachlorophenol, D-Glucose, Acid Blue 29, Atraton, Aspirin, Dimethoate, Aldicarb sulfone, Hydroquinone, (R)-Propranolol, Citric acid, Atrazine) to test the system efficiency. The experimental CO2 value was compared with the theoretical TOC value calculated by means of the structure's formula. 相似文献
133.
Lev?B?LevitinEmail author Tommaso?Toffoli 《International Journal of Theoretical Physics》2005,44(11):1989-1994
The concepts of conditional entropy and information between subsystems of a composite quantum system are generalized to include
arbitrary indirect measurements (POVMs). Some properties of those quantities differ from those of their classical counterparts;
certain equalities and inequalities of classical information theory may be violated.
PACS: 03.67.-a. 相似文献
134.
Tommaso Boggio 《Annali di Matematica Pura ed Applicata》1978,44(1):173-184
Sunto Viene data una nuova e semplice risoluzione del problema della determinazione della deformazione di una membrana elastica
piana, quando siano noti gli spostamenti che subisce il contorno della membrana. 相似文献
135.
Filippo Rossi Tommaso Casalini Marco Santoro Andrea Mele Giuseppe Perale 《Chemical Papers》2011,65(6):903-908
A number of studies and works in drug delivery literature are focused on the understanding and modelling of transport phenomena,
the pivotal point of a good scaffold design for tissue engineering. Accurate knowledge of the diffusion coefficient of an
active drug plays a key role in the analysis, prediction of their kinetics and formulation of efficient drug delivery systems.
In this work, the kinetics of the release of methylprednisolone from agar-Carbomer hydrogel were studied taking into consideration
the different drug concentrations and clearances typically achieved in in vitro or in vivo tests. Starting from the experiments
it is possible to model the transport phenomenon and to calculate the diffusion coefficient through the hydrogel matrix. 相似文献
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139.
140.
Franco Dinelli Tommaso Sgrilli Andrea Ricci Paolo Baschieri Pasqualantonio Pingue Manjunath Puttaswamy Peter Kingshott 《Journal of Polymer Science.Polymer Physics》2013,51(15):1149-1156
The viscoelastic properties of thin polystyrene (PS) films depend on confinement, as it can modify the molecular dynamics affecting the glass transition. In the recent past, the authors have investigated the region next to the free interface by means of an atomic force microscope suitably modified to monitor the indentation of a tip into a film during a given lapse of time while applying a constant load. Herein, to explore the interface with the substrate, the authors report on experiments in which PS brushes grafted to native silicon oxide were used. It was found that the film wettability on brushes and H‐terminated silicon can be highly improved when compared with native silicon oxide. In addition, the glass transition temperature of thin films increases up to the bulk value in the case of film/brush combinations with high molecular weight or films with high molecular weight on H‐terminated silicon. Data are discussed according to hypotheses such as residual solvent presence, interface free volume, and molecular mechanical coupling. These observations can be of great interest for nanotechnological applications, especially in those instances where one needs to tailor the temperature dependence of viscoelastic properties of thin films. © 2013 Wiley Periodicals, Inc. J. Polym. Sci., Part B: Polym. Phys. 2013, 51, 1149–1156 相似文献