1,721,030 research outputs found
The impact of Concentration measurements upon estimation of flow and transport parameters: the lagrangian approach
Full text linkTransport of a conservative solute takes place in a heterogeneous formation of spatially variable conductivity. The latter is modeled as a random space function of stationary lognormal distribution. As a result the velocity field and the concentration are also random. Assuming that measurements of concentration of an existing plume are available, the problem addressed here is to assess their effect upon identification of log conductivity and flow transport variables. The solution is sought in a Lagrangian framework in which transport is represented in terms of the random trajectories of particles originating from the initial plume. A concentration measurement is equivalent to the passage of a trajectory through the measurement point at a given time. The impact of measurements is achieved by conditioning any variable of interest on realizations for which at least one trajectory satisfies the requirement. It is shown that cokriging of concentration and another flow or transport variable leads to the correct conditioned mean of the latter. In contrast, the conditional variance based on cokriging is erroneous. The procedure is illustrated for two-dimensional flow under a few simplifying assumptions. The effect of a concentration measurement upon the expected value and variance of log transmissivity and plume centroid are examined in a few particular cases. The procedure may improve the solution of the inverse problem and the prediction of transport of existing plume
Histologic Analysis of Zafirlukast's Effect on Capsule Formation Around Silicone Implants: Some Considerations
No full textWe have read with profound interest the article by Bastos
and colleagues entitled Histologic Analysis of Zafirlukast’s
Effect on Capsule Formation Around Silicone Implants.
We have truly enjoyed this study because it focuses on the
very important issue of ongoing research toward pharmacologic
therapy for the treatment of periprosthetic capsule
contracture. The latter has an incidence in the range of
0.5% to 50% [3]. Despite persistent clinical and laboratory
investigation, to date, no solution has been developed to
solve or prevent this problem
Applicazione comparativa di tre metodi di risoluzione del problema inverso in un acquifero eterogeneo bidimensionale
No full textProcessi di trasporto in campi eterogenei bidimensionali con condizionamento in trasmissività e carichi. Parte I: impostazione del problema e sviluppi teorici
No full textAnalisi stocastica dei processi di trasporto in acquiferi eterogenei: utilità del condizionamento per la riduzione dell'incertezza statistica
No full textProcessi di trasporto in campi eterogenei bidimensionali con condizionamento in trasmissività e carichi. Parte II: applicazione della teoria a casi particolari
No full text[Use of dermo-adipose grafts in facial morphology restoration in cases of progressive partial lipodystrophy]
No full textAnalisi della risposta bronchiale alla metacolina in asmatici dopo inalazione di soluzione ipotonica mediante il rilievo di paramentri funzionali multipli
No full textProcessi di trasporto in campi eterogenei bidimensionali con condizionamento in trasmissività e carichi. Parte I: impostazione del problema e sviluppi teorici
No full text- …
